Oil circulation system and lubrication system

Abstract

An oil circulation system and a lubrication system. The oil circulation system comprises a circulation loop (1) connected to an oil tank (100); a first power device (11) and a first temperature control valve (12) are arranged on the circulation loop (1); the first temperature control valve (12) is provided with a first oil outlet pipe (121) and a second oil outlet pipe (122) so as to return oil to the oil tank (100); and a first heat exchanger (1211) is provided on the first oil outlet pipe (121). In the oil circulation system, the circulation loop (1) is connected to the oil tank (100), and the first power device (11) enables a lubrication medium in the oil tank (100) to circulate along the circulation loop (1); and the flow rates of the first oil outlet pipe (121) and the second oil outlet pipe (122) are regulated by means of a valve opening degree of the first temperature control valve (12), thereby realizing the regulation of the temperature of the lubrication medium, ensuring that the temperature of the lubrication medium is within a required temperature range, and further ensuring the lubrication performance.

Description

An oil circulation system and a lubrication system Technical Field

[0001] This disclosure relates to the field of lubrication technology, and more specifically, to an oil circulation system and a lubrication system. Background Technology

[0002] Fracturing equipment is essential for fracturing operations in oil and gas fields worldwide. A key component of this equipment—the fracturing plunger pump—experiences sliding or rolling friction between its internal parts during operation. This process requires a lubricating medium to establish a lubricating oil film and remove heat and impurities generated by friction. Otherwise, dry friction during operation can lead to rapid temperature rise, which, if not effectively controlled, can cause component failure and render the equipment inoperable. The performance of the lubricating medium is significantly affected by temperature, and current lubrication systems lack solutions for controlling the lubricating medium temperature. Excessively high or low temperatures can negatively impact lubrication effectiveness.

[0003] Utility Model Content

[0004] The main objective of this disclosure is to provide an oil circulation system and a lubrication system to solve the technical problem in the prior art where the lubricating medium temperature is too high or too low, affecting the lubrication effect.

[0005] To achieve the above objectives, this disclosure provides an oil circulation system, including a circulation loop connected to an oil tank. The circulation loop is provided with a first power unit and a first temperature control valve. The first temperature control valve is provided with a first oil outlet pipe and a second oil outlet pipe to return oil to the oil tank. A first radiator is provided on the first oil outlet pipe. The first temperature control valve adjusts the valve opening according to the temperature of the lubricating medium, thereby adjusting the flow rate of the first oil outlet pipe and the second oil outlet pipe.

[0006] 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.

[0007] Furthermore, a first filter is provided on the circulation loop.

[0008] Furthermore, the first filter is equipped with a differential pressure detection device.

[0009] Furthermore, an oil detection device is provided on the circulation loop.

[0010] Furthermore, the first power unit includes a first drive member and a first circulation pump, wherein the first drive member is driven to the first circulation pump.

[0011] This disclosure 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 includes a lubrication supply line and a lubrication return line. The oil tank is connected to the inlet of the component to be lubricated through the lubrication supply line, and the oil tank is connected to the outlet of the component to be lubricated through the lubrication return line. A second power device is provided on the lubrication circuit.

[0012] Furthermore, a second filter is provided on the lubrication circuit.

[0013] Furthermore, a second temperature control valve is provided on the lubrication oil supply line. The second temperature control valve is provided with a third oil outlet line and a fourth oil outlet line to supply oil to the component to be lubricated. A second radiator is provided on the third oil outlet line. The second temperature control valve adjusts the valve opening according to the temperature of the lubricating medium, thereby adjusting the flow rate of the third oil outlet line and the fourth oil outlet line.

[0014] Furthermore, it also includes a safety circuit, which is equipped with a safety valve. One end of the safety circuit is connected to the lubrication supply line, and the other end is connected to the oil tank.

[0015] In the oil circulation system disclosed herein, a circulation loop is connected to an oil tank, and a first power unit enables the lubricating medium in the oil tank to circulate along the circulation loop. A first temperature control valve is provided on the circulation loop, which can adjust the valve opening according to the temperature of the lubricating medium. The first temperature control valve has a first oil outlet pipe and a second oil outlet pipe. A first radiator is provided on the first oil outlet pipe to dissipate heat and cool the lubricating medium. By adjusting the valve opening of the first temperature control valve to regulate the flow rate of the first and second oil outlet pipes, the temperature of the lubricating medium is adjusted to ensure that the temperature of the lubricating medium is within the required temperature range, thereby ensuring lubrication performance.

[0016] The lubrication system disclosed herein has all the beneficial effects of the aforementioned oil circulation system, which will not be repeated here. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure. In the drawings:

[0018] Figure 1 is a schematic diagram of one of the oil circulation systems provided in an embodiment of this disclosure;

[0019] Figure 2 is a second schematic diagram of the oil circulation system provided in an embodiment of this disclosure;

[0020] Figure 3 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure.

[0021] Figure 4 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure.

[0022] Figure 5 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure;

[0023] Figure 6 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure;

[0024] Figure 7 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure;

[0025] Figure 8 is a schematic diagram of the oil circulation system provided in an embodiment of this disclosure.

[0026] Figure 9 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure.

[0027] Figure 10 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure.

[0028] Figure 11 is a schematic diagram of the oil circulation system provided in an embodiment of this disclosure;

[0029] Figure 12 is a schematic diagram of the oil circulation system provided in the embodiment of this disclosure;

[0030] Figure 13 is a schematic diagram of one of the lubrication systems provided in an embodiment of this disclosure;

[0031] Figure 14 is a second schematic diagram of the lubrication system provided in an embodiment of this disclosure;

[0032] Figure 15 is a schematic diagram of the lubrication system provided in the embodiment of this disclosure (third one).

[0033] Figure 16 is a schematic diagram of the fourth embodiment of the lubrication system provided in this disclosure;

[0034] Figure 17 is a schematic diagram of the lubrication system provided in the embodiment of this disclosure, fifth of the embodiments;

[0035] Figure 18 is a schematic diagram of the lubrication system provided in an embodiment of this disclosure, which is the sixth one.

[0036] Figure 19 is a schematic diagram of the lubrication system provided in the embodiment of this disclosure, namely, the seventh one.

[0037] Figure 20 is a schematic diagram of the lubrication system provided in an embodiment of this disclosure;

[0038] Figure 21 is a schematic diagram of the lubrication system provided in the embodiment of this disclosure.

[0039] The above-mentioned figures include the following reference numerals: 100, oil tank; 1, circulation loop; 11, first power unit; 111, first drive component; 112, first circulation pump; 12, first temperature control valve; 121, first oil outlet pipe; 1211, first radiator; 122, second oil outlet pipe; 1221, first heater; 13, second heater; 14, third heater; 15, first filter; 151, differential pressure sensor; 152, first pressure sensor; 153, second pressure sensor; 16, oil detection device; 200, component to be lubricated; 300. Lubrication circuit; 301. Lubrication supply line; 302. Lubrication return line; 31. Second power unit; 311. Second drive unit; 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; 400. Safety circuit; 41. Safety valve. Detailed Implementation

[0040] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] This disclosure provides an oil circulation system, including a circulation loop 1 connected to an oil tank 100. The circulation loop 1 is provided with a first power unit 11 and a first temperature control valve 12. The first temperature control valve 12 is provided with a first oil outlet pipe 121 and a second oil outlet pipe 122 to return oil to the oil tank 100. The first oil outlet pipe 121 is provided with a first radiator 1211.

[0044] As shown in Figures 1 and 2, 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 filtration, and then return to the oil tank 100. Appropriate functional components can be installed in the oil circulation system as needed; specific functional components are not limited here.

[0045] The first power unit 11 provides mechanical energy to the lubricating medium, enabling the lubricating medium to flow. Optionally, the first power unit 11 includes a first drive member 111 and a first circulation pump 112, with the first drive member 111 and the first circulation pump 112 being driven together. The first drive member 111 can be, for example, an electric motor or a hydraulic motor, and the first circulation pump 112 can be, for example, a gear pump or a vane pump. The first drive member 111 drives the first circulation pump 112 to operate, enabling the first circulation pump 112 to provide mechanical energy to the lubricating medium.

[0046] 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 from different outlets).

[0047] In this embodiment, the first temperature control valve 12 has one inlet and two outlets. The lubricating medium in the circulation loop 1 enters the first temperature control valve 12 through the inlet. One of the two outlets is connected to the first oil outlet pipe 121, and the other outlet is connected to the second oil outlet pipe 122. The first oil outlet pipe 121 is equipped with a first radiator 1211. Taking Figure 2 as an example, no other components are installed on the second oil outlet pipe 122. When the temperature of the lubricating medium is too high, the valve opening of the first temperature control valve 12 is adjusted accordingly, so that more lubricating medium enters the first oil outlet pipe 121. When the temperature of the lubricating medium is low, the valve opening of the first temperature control valve 12 is adjusted accordingly, so that more lubricating medium enters the second oil outlet pipe 122. When the temperature of the lubricating medium meets the requirements, the lubricating medium enters the first oil outlet pipe 121 and the second oil outlet pipe 122 in a certain proportion. Then, the lubricating medium flows through the first oil outlet pipe 121 and the second oil outlet pipe 122 and returns to the oil tank 100, so that the temperature of the lubricating medium in the oil tank 100 is gradually regulated.

[0048] In the oil circulation system disclosed herein, a circulation loop 1 is connected to an oil tank 100, and a first power unit 11 enables the lubricating medium in the oil tank 100 to circulate along the circulation loop 1. A first temperature control valve 12 is provided on the circulation loop 1. 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 pipe 121 and a second oil outlet pipe 122. A first radiator 1211 is provided on the first oil outlet pipe 121 to dissipate heat and cool the lubricating medium. By adjusting the valve opening of the first temperature control valve 12 to regulate the flow rate of the first oil outlet pipe 121 and the second oil outlet pipe 122, the temperature of the lubricating medium is adjusted to ensure that the temperature of the lubricating medium is within the required temperature range, thereby ensuring lubrication performance.

[0049] Furthermore, as shown in Figure 1, a first heater 1221 is provided on the second oil outlet pipeline 122.

[0050] 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 control valve 12, the lubricating medium enters the first oil outlet line 121 and / or the second oil outlet line 122 due to the valve opening degree. When the temperature of the lubricating medium is too low, more of the lubricating medium is heated by the first heater 1221; when the temperature of the lubricating medium is too high, more of the lubricating medium is cooled by the first radiator 1211; when the temperature of the lubricating medium meets the requirements, the lubricating medium enters the first oil outlet line 121 and the second oil outlet line 122 in a certain proportion.

[0051] Optionally, as shown in Figures 2 to 4, a second heater 13 is provided on the circulation loop 1.

[0052] The first oil outlet pipe 121 is equipped with a first radiator 1211, and the second oil outlet pipe 122 has no other components (the first heater 1221 can also be retained). The circulation loop 1 is equipped with a second heater 13 (the second heater 13 is preferably located upstream of the first temperature control valve 12 to ensure accurate temperature regulation). After passing through the first temperature control valve 12, the lubricating medium enters the first oil outlet pipe 121 and / or the second oil outlet pipe 122 due to the valve opening. When the lubricating medium temperature is too low, more lubricating medium enters the second oil outlet pipe 122 to maintain the temperature of the lubricating medium after it has been heated; when the lubricating medium temperature is too high, more 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 pipe 121 and the second oil outlet pipe 122 in a certain proportion.

[0053] Optionally, as shown in Figures 5 and 6, the oil tank 100 is provided with a third heater 14.

[0054] At this point, the second heater 13 can be installed in the circulation loop 1, or it can be omitted; similarly, the first heater 1221 can be installed or omitted. When the temperature of the lubricating medium is too low, more lubricating medium enters the second oil outlet pipe 122, so that the lubricating medium, which has already been heated, maintains its temperature; when the temperature of the lubricating medium is too high, more lubricating medium passes through the first radiator 1211 for cooling; when the temperature of the lubricating medium meets the requirements, the lubricating medium enters the first oil outlet pipe 121 and the second oil outlet pipe 122 in a certain proportion.

[0055] Thus, by setting the first heater 1221, and / or the second heater 13, and / or the third heater 14, the oil circulation system can achieve a wider range of temperature regulation, ensuring that the temperature of the lubricating medium is within the required temperature range, and better guaranteeing lubrication performance.

[0056] Furthermore, as shown in Figures 7 to 9, a first filter 15 is provided on the circulation loop 1.

[0057] The first filter 15 can be set at any position in the circulation loop 1 as needed, so as to filter the lubricating medium entering the circulation loop 1, filter out impurities in the lubricating medium, and prevent these impurities from returning to the oil tank 100.

[0058] Furthermore, the first filter 15 is equipped with a differential pressure detection device.

[0059] Referring to Figure 10, one embodiment of the differential pressure detection device is shown. The differential pressure detection device includes a differential pressure sensor 151, with its two ends connected to the inlet and outlet of the first filter 15, respectively, so that the differential pressure across the two ends of the first filter 15 can be directly collected.

[0060] Referring to Figure 11, another embodiment of the differential pressure detection device is shown in the figure. The differential pressure 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. The differential pressure between the two ends of the first filter 15 is determined by collecting the inlet pressure and the outlet pressure of the first filter 15.

[0061] In this way, by collecting the pressure difference data at both ends of the first filter 15, it serves to remind the filter to be maintained and replaced. 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, thus ensuring the filtration performance of the filter.

[0062] Furthermore, the circulation loop 1 is equipped with an oil detection device 16.

[0063] As shown in Figure 12, the oil detection device 16 can be set at any position in the circulation loop 1 as needed. The oil detection device 16 can detect the cleanliness of the lubricating medium, including parameters such as moisture, particle size, and saturation (for example, particle detection is performed using a magnetic device). When an abnormality in the cleanliness is detected (which can be determined by comparing with normal data, which can be set in the control system), the control system will alarm to remind the staff to ensure timely maintenance work such as lubricating medium replacement and filter element replacement.

[0064] This disclosure also provides a lubrication system, as shown in Figures 1, 2 and 13, including an oil tank 100, a component to be lubricated 200, a lubrication circuit 300 and the aforementioned oil circulation system. The lubrication circuit 300 includes a lubrication supply line 301 and a lubrication return line 302. The oil tank 100 is connected to the inlet of the component to be lubricated 200 through the lubrication supply line 301, and the oil tank 100 is connected to the outlet of the component to be lubricated 200 through the lubrication return line 302. A second power device 31 is provided on the lubrication circuit 300.

[0065] Referring to Figure 13, a lubrication system including an oil circulation system is shown. Only the circulation loop 1, the second heater 13, and the first power unit 11 in the oil circulation system are shown in a simplified manner. The oil circulation system described above can also be used, such as those shown in Figures 1 and 2.

[0066] As shown in Figure 13, 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 line 301, and the oil tank 100 is connected to the outlet of the component to be lubricated 200 through the lubrication return line 302. A second power device 31 is provided on the lubrication circuit 300 to make the lubricating medium flow in the lubrication circuit 300.

[0067] Optionally, the second power unit 31 includes a second drive member 311 and a second circulation pump 312, with the second drive member 311 and the second circulation pump 312 being driven together. The second drive member 311 may be, for example, an electric motor or a hydraulic motor, and the second circulation pump 312 may be, for example, a gear pump or a vane pump. The second drive member 311 drives the second circulation pump 312, causing the lubricating medium to flow in the lubrication circuit 300.

[0068] In the lubrication system disclosed herein, a second power unit 31 enables the lubricating medium to enter the component 200 to be lubricated through the lubrication supply line 301 to perform a lubrication function, and then returns to the oil tank 100 through the lubrication return line 302. This includes the aforementioned oil circulation system, which is connected to the oil tank 100 via a circulation loop 1, and the first power unit 11 enables the lubricating medium in the oil tank 100 to circulate along the circulation loop 1. A first temperature control valve 12 is provided on the circulation loop 1, which can adjust its opening according to the temperature of the lubricating medium. The first temperature control valve 12 has a first oil outlet line 121 and a second oil outlet line 122. A first radiator 1211 is provided on the first oil outlet line 121 to dissipate heat and cool the lubricating medium. By adjusting the opening of the first temperature control valve 12 to regulate the flow rate of the first oil outlet line 121 and the second oil outlet line 122, the temperature of the lubricating medium is adjusted, ensuring that the temperature of the lubricating medium is within the required temperature range, thereby guaranteeing lubrication performance.

[0069] Furthermore, a second filter 32 is provided on the lubrication circuit 300.

[0070] As shown in Figure 13, a second filter 32 can be installed at any position on the lubrication circuit 300. Impurities are filtered by the second filter 32 to prevent them from entering the parts to be lubricated 200 or accumulating in the oil tank 100, thus preventing impurities from causing wear on the relevant parts.

[0071] Furthermore, the lubrication oil supply line 301 is provided with a second temperature control valve 33, the second temperature control valve 33 is provided with a third oil outlet line 331 and a fourth oil outlet line 332 to supply oil to the component 200 to be lubricated, and the third oil outlet line 331 is provided with a second radiator 3311.

[0072] As shown in Figure 14, the second temperature control valve 33 is installed on the lubrication supply line 301. A second radiator 3311 is installed on the third oil outlet line 331 of the second temperature control valve 33. A fourth heater may or may not be installed on the fourth oil outlet line 332. The second temperature control valve 33 can adjust its opening degree 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 certain proportion.

[0073] Thus, by adjusting the opening degree of the second temperature control valve 33, the flow rate of the third oil outlet pipe 331 and the fourth oil outlet pipe 332 is regulated, thereby adjusting the temperature of the lubricating medium and ensuring that the temperature of the lubricating medium is within the required temperature range, thereby ensuring lubrication performance.

[0074] Optionally, the lubrication circuit 300 is provided with a first detection element 34 and a second detection element 35.

[0075] As shown in Figures 15 to 17, the first detection element 34 and the second detection element 35 can be set at any position in the lubrication circuit 300. The first detection element 34 and the second detection element 35 can detect the temperature and pressure of the lubrication medium respectively, so as to facilitate the corresponding control of the lubrication system.

[0076] Preferably, it also includes a safety circuit 400, on which a safety valve 41 is provided. One end of the safety circuit 400 is connected to the lubrication supply line 301, and the other end is connected to the oil tank 100.

[0077] As shown in Figure 18, one end of the safety circuit 400 is connected to the outlet of the second power unit 31, and the other end of the safety circuit 400 is connected to the oil tank 100. The safety valve 41 is installed on the safety circuit 400. When the pressure of the lubricating medium is too high, the safety valve 41 will open, and the lubricating medium will return to the oil tank 100 through the safety circuit 400, thus protecting the lubrication system.

[0078] As shown in Figure 19, there are two safety circuits 400. One safety circuit 400 is the same as the safety circuit 400 in Figure 18; one end of the other safety circuit 400 is connected to the inlet of the component 200 to be lubricated, 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, and the component 200 to be lubricated can be avoided.

[0079] It should be noted that the lubrication circuit 300 in this disclosure includes a lubrication supply line 301 and a lubrication return line 302. The specific number of lubrication supply lines 301 and lubrication return lines 302 is not limited here. Referring to Figures 20 and 21, both figures show a total of two lubrication supply lines 301 and one lubrication return line 302. It can be understood that multiple lubrication supply lines 301 can correspond to different lubrication positions of a single component 200 to be lubricated, or they can correspond to multiple components 200 to be lubricated. Furthermore, the specific number of lubrication return lines 302 can be designed as needed, which will not be elaborated here.

[0080] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0083] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An oil circulation system characterized by comprising: It includes a circulation loop connected to the oil tank, the circulation loop is equipped with a first power unit and a first temperature control valve, the first temperature control valve is equipped with a first oil outlet pipe and a second oil outlet pipe to return oil to the oil tank, the first oil outlet pipe is equipped with a first radiator, and the first temperature control valve adjusts the valve opening according to the temperature of the lubricating medium, thereby adjusting the flow rate of the first oil outlet pipe and the second oil outlet pipe.

2. The oil circulation system according to claim 1, characterized by 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 by The circulation loop is equipped with a first filter.

4. The oil circulation system according to claim 3, characterized by The first filter is equipped with a differential pressure detection device.

5. The oil circulation system according to claim 1, wherein The circulation loop is equipped with an oil detection device.

6. The oil circulation system according to claim 1, wherein The first power unit includes a first drive component and a first circulation pump, wherein the first drive component is drivenly connected to the first circulation pump.

7. A lubrication system characterized in that, The system includes an oil tank, a component to be lubricated, a lubrication circuit, and an oil circulation system as described in any one of claims 1 to 6. The lubrication circuit includes a lubrication supply line and a lubrication return line. The oil tank is connected to the inlet of the component to be lubricated through the lubrication supply line, and the oil tank is connected to the outlet of the component to be lubricated through the lubrication return line. A second power device is provided on the lubrication circuit.

8. The lubrication system of claim 7, wherein, A second filter is provided on the lubrication circuit.

9. The lubrication system of claim 7, wherein, The lubrication supply line is equipped with a second temperature control valve, which has a third oil outlet line and a fourth oil outlet line to supply oil to the component to be lubricated. The third oil outlet line is equipped with a second radiator. The second temperature control valve adjusts the valve opening according to the temperature of the lubricating medium, thereby adjusting the flow rate of the third oil outlet line and the fourth oil outlet line.

10. The lubrication system of claim 7, wherein, It also includes a safety circuit, which is equipped with a safety valve. One end of the safety circuit is connected to the lubrication supply line, and the other end is connected to the oil tank.

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