Lubricating oil warming device

Abstract

The present application relates to the technical field of engine accessory drive assembly test, in particular to a lubricating oil warming device, comprising: an oil supply mechanism, the oil supply mechanism is provided with an oil outlet, an oil return port and an overflow port, the oil outlet is suitable for being connected with the oil inlet end of a test piece through a first pipeline, the oil return port is connected with the oil outlet end of the test piece through a second pipeline; a recovery mechanism is in communication with the overflow port of the oil supply mechanism through an overflow pipeline; a pressure relief mechanism is arranged on the overflow pipeline and is in communication with the overflow pipeline, and is used for relieving the pressure of the oil supply mechanism. The technical problem of waste and poor safety caused by the overflow of lubricating oil during pressure relief of the existing lubricating oil warming device is solved.

Description

Technical Field

[0001] This invention relates to the field of engine accessory transmission component testing technology, specifically to a lubricating oil heating device. Background Technology

[0002] The development of aero-engines involves various ground-based tests and verifications, which are inseparable from the construction of testing equipment and technological advancements. According to the relevant requirements of GBJ242A, during the vibration scanning test and endurance test of the accessory transmission components of aero-engines, the specified maximum lubricating oil inlet temperature (e.g., 130℃), minimum lubricating oil pressure, and flow rate must be achieved. The purpose is to assess the performance of components such as the casing, gears, and splines of the accessory transmission components under extreme and harsh operating conditions.

[0003] Currently, lubricating oil heating devices generally consist of a heater, a heating control unit, a temperature / chamber pressure monitoring unit, a safety valve, and a heat insulation device. During the heating process, when the temperature exceeds the alarm set value, the electrical control system issues an audible and visual alarm signal and automatically stops heating. When the lubricating oil pressure reaches the set pressure of the safety valve, the safety valve opens to release pressure, thus achieving the purpose of heating protection and pressure relief. The heat insulation device can keep the lubricating oil warm and prevent burns to operators or damage to equipment.

[0004] Therefore, existing lubricating oil heating devices will carry lubricating oil out when depressurization occurs, resulting in waste and poor safety. Summary of the Invention

[0005] This invention provides a heated lubricating oil device, which solves the technical problem that existing lubricating oil heating devices will carry lubricating oil out during pressure relief, resulting in waste and poor safety.

[0006] In view of this, the present invention provides a lubricating oil heating device, comprising:

[0007] An oil supply mechanism is provided with an oil outlet, an oil return port and an overflow port. The oil outlet is adapted to be connected to the oil inlet end of the test piece through a first pipeline, and the oil return port is connected to the oil outlet end of the test piece through a second pipeline.

[0008] The recovery mechanism is connected to the overflow port of the oil supply mechanism via an overflow pipe;

[0009] A pressure relief mechanism is installed on and connected to the overflow pipe, and is used to relieve pressure on the oil supply mechanism.

[0010] Optionally, the recovery mechanism is located above the oil supply mechanism.

[0011] Optionally, the recovery mechanism includes at least one overflow tank, the bottom of which is connected to the overflow port via the overflow pipe, and the top of which is connected to the atmosphere.

[0012] Optionally, the oil supply mechanism includes a heated oil tank and a heater, wherein the heater is connected to the heated oil tank;

[0013] The overflow port includes a first overflow port, which is disposed on the heating oil tank;

[0014] The oil outlet is located on the heater, and the oil return port is located on the heating oil tank;

[0015] The overflow pipe includes a first overflow pipe, one end of which is connected to the first overflow port, and the other end of which is connected to the bottom of the overflow tank.

[0016] The pressure relief mechanism includes a first pressure relief valve, which is disposed on the first overflow pipe and connected to the first overflow pipe.

[0017] Optionally, the overflow pipe further includes a second overflow pipe; the overflow port further includes a second overflow port, which is disposed on the heater; one end of the second overflow pipe is connected to the second overflow port, and the other end is connected to the first overflow pipe; the pressure relief mechanism further includes a second pressure relief valve, which is disposed on the second overflow pipe and connected to the second overflow pipe.

[0018] Optionally, there are two overflow tanks. The first overflow pipe is vertically arranged and one end is connected to the bottom of one of the overflow tanks, and the other end is connected to the heating tank. The bottom of the other overflow tank is connected to the first overflow pipe through a third pipe. The first pressure relief valve is located below the connection between the third pipe and the first overflow pipe, and below the connection between the second overflow pipe and the first overflow pipe.

[0019] Optionally, it may also include testing and control facilities;

[0020] The detection mechanism is installed on the oil supply mechanism and is used to detect the temperature and pressure parameters of the lubricating oil.

[0021] The control mechanism is communicatively connected to the heating oil tank, the heater, the first pressure relief valve, and the detection mechanism.

[0022] Optionally, the first pressure relief valve is an electric pressure relief valve, and the second pressure relief valve is a manual pressure relief valve, wherein the electric pressure relief valve is communicatively connected to the control mechanism.

[0023] Optionally, the detection mechanism includes multiple sets of sensor assemblies. Each set of sensor assemblies is provided on the heating oil tank, the heater, the first pipeline, and the second pipeline. Each set of sensor assemblies includes a temperature sensor and a pressure sensor. Both the temperature sensor and the pressure sensor are communicatively connected to the control mechanism.

[0024] And / or, both the heating oil tank and the heater are equipped with heating rods;

[0025] And / or, the outer periphery of the heating oil tank, the heater, the first pipeline, the second pipeline, the first overflow pipeline, and the overflow oil tank are all covered with heat insulation cotton.

[0026] Optionally, it also includes an audible and visual alarm, which is communicatively connected to the control mechanism;

[0027] And / or, the control mechanism is a host computer;

[0028] And / or, the top of the overflow tank is connected to the atmosphere via an air filter.

[0029] The technical solution of this invention has the following advantages:

[0030] In this invention, during testing, the oil outlet of the oil supply mechanism is connected to the oil inlet of the test piece, and the oil return port is connected to the oil outlet of the test piece. During the test, the oil supply mechanism heats the lubricating oil inside and delivers it to the test piece through the oil outlet. After passing through the test piece, the lubricating oil flows out through the oil outlet and returns to the oil supply mechanism through the oil return port, realizing the circulating heating and supply of lubricating oil. During the testing of the test piece, the pressure inside the oil supply mechanism changes during the heating and circulation of the lubricating oil. When the pressure reaches the preset pressure value of the pressure relief mechanism, the pressure is released. The pressure relief mechanism opens to depressurize the oil supply mechanism. The hot air and lubricating oil discharged from the oil supply mechanism enter the recovery mechanism through the overflow port and overflow pipe. The hot air overflowing from the oil supply mechanism does not directly connect with the atmosphere, but is buffered by the recovery mechanism. The overflowing lubricating oil can be collected in the recovery mechanism for reuse, which avoids the oil supply mechanism from directly connecting to the atmosphere during depressurization, preventing the high temperature oil and gas from burning the operator and improving safety. At the same time, it can also avoid the loss and waste of lubricating oil caused by the overflow of gas during depressurization. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a lubricating oil heating device provided by the present invention;

[0033] Figure 2 This is another structural schematic diagram of a lubricating oil heating device provided by the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Test specimen; 2. Heating oil tank; 3. Heater; 4. First pressure relief valve; 5. Second pressure relief valve; 6. Overflow oil tank; 7. Temperature sensor; 8. Pressure sensor; 9. Heating rod; 10. Control mechanism; 11. First overflow pipe; 12. Second overflow pipe; 13. First lubricating oil pump; 14. Second lubricating oil pump; 15. Air filter. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] Please see Figures 1 to 2 This embodiment provides a lubricating oil heating device, comprising: an oil supply mechanism, which has an oil outlet, an oil return port, and an overflow port; the oil outlet is adapted to be connected to the oil inlet end of the test piece 1 through a first pipeline, and the oil return port is connected to the oil outlet end of the test piece 1 through a second pipeline; a recovery mechanism, which is connected to the overflow port of the oil supply mechanism through an overflow pipe; and a pressure relief mechanism, which is installed on and connected to the overflow pipe and is used to relieve pressure on the oil supply mechanism.

[0042] It should be noted that the overflow port is positioned higher than the oil level in the oil supply mechanism; the oil supply mechanism is adapted to be interconnected with test piece 1 to form a circulating oil circuit, supplying oil to test piece 1; the oil supply mechanism can heat the lubricating oil before delivering it to test piece 1; test piece 1 has a built-in oil supply pump and return pump, which can provide power to input the lubricating oil in the oil supply mechanism into test piece 1 through the oil supply pump, and then output the lubricating oil in test piece 1 back to the oil supply mechanism through the return pump, facilitating the circulation and supply of lubricating oil.

[0043] In this embodiment, during the test, the oil outlet of the oil supply mechanism is connected to the oil inlet of test piece 1, and the oil return port is connected to the oil outlet of the test piece. During the test, the oil supply mechanism heats the lubricating oil inside and delivers it to test piece 1 through the oil outlet. After passing through test piece 1, the lubricating oil flows out through the oil outlet and returns to the oil supply mechanism through the oil return port, realizing the circulation heating and supply of lubricating oil. During the test of test piece 1, the pressure inside the oil supply mechanism will change during the heating and circulation process of the lubricating oil. When the pressure reaches the preset pressure value of the pressure relief mechanism, When the pressure relief mechanism opens, it relieves pressure on the oil supply mechanism. The hot gas and lubricating oil discharged from the oil supply mechanism enter the recovery mechanism through the overflow port and overflow pipe. The hot gas overflowing from the oil supply mechanism does not directly connect with the atmosphere, but is buffered by the recovery mechanism. The overflowing lubricating oil can be collected in the recovery mechanism for reuse, which avoids the oil supply mechanism from directly connecting to the atmosphere during pressure relief, preventing the high temperature oil and gas from burning the operator and improving safety. At the same time, it can also avoid the loss and waste of lubricating oil caused by the overflow of gas during pressure relief.

[0044] Example 2

[0045] As a further improvement to Example 1, such as Figures 1 to 2 As shown, the recovery mechanism is located above the oil supply mechanism.

[0046] In this embodiment, by placing the recovery mechanism above the oil supply mechanism, when the pressure value in the oil supply mechanism drops to a preset pressure value, the pressure relief mechanism is opened to connect the oil supply mechanism and the recovery mechanism. Under the action of gravity, the lubricating oil collected in the recovery mechanism can flow back to the oil supply mechanism. This is simple and convenient, and can realize the repeated recycling of lubricating oil, avoiding waste.

[0047] Based on the above embodiments, in a specific embodiment, the recovery mechanism includes at least one overflow tank 6, the bottom of the overflow tank 6 is connected to the overflow port through an overflow pipe, and the top of the overflow tank 6 is connected to the atmosphere.

[0048] It should be noted that the bottoms of all overflow oil tanks 6 are interconnected to facilitate the return of overflowing lubricating oil.

[0049] In this embodiment, the bottom of the overflow tank 6 is connected to the overflow pipe, which facilitates the connection of the oil supply mechanism to release pressure and collect hot air and overflowing lubricating oil, thus playing a buffering and collection role. The top is open to the atmosphere, which facilitates pressure release.

[0050] Based on the above embodiments, in a specific embodiment, the oil supply mechanism includes a heating oil tank 2 and a heater 3, with the heater 3 connected to the heating oil tank 2; the overflow port includes a first overflow port, which is disposed on the heating oil tank 2; the oil outlet is disposed on the heater 3, and the oil return port is disposed on the heating oil tank 2; the overflow pipe includes a first overflow pipe 11, one end of which is connected to the first overflow port, and the other end is connected to the bottom of the overflow oil tank 6; the pressure relief mechanism includes a first pressure relief valve 4, which is disposed on and connected to the first overflow pipe 11.

[0051] It should be noted that both the heating oil tank 2 and the heater 3 can heat the lubricating oil. The heating oil tank 2 and the heater 3 are at the same height in the vertical direction to ensure that the lubricating oil in the heating oil tank 2 flows smoothly into the heater 3.

[0052] In this embodiment, the lubricating oil is heated by the heating tank 2 and then by the heater 3. It is then output from the outlet of the heater 3 and the first pipeline to the test piece 1, and then from the outlet of the test piece 1 through the return port and the second pipeline back to the heating tank 2, forming a cycle. During the test, when the pressure in the heating tank 2 becomes too high and reaches the preset pressure of the first pressure relief valve 4, the first pressure relief valve 4 opens to release pressure. The gas and lubricating oil carried in the heating tank 2 pass through the first overflow port and then through the first overflow pipe 11 into the overflow tank 6, thus connecting with the atmosphere to release pressure and prevent damage to the equipment due to excessive pressure. Since the heating tank 2 is connected to the heater 3, releasing pressure in the heating tank 2 can simultaneously release pressure in the heater 3. Furthermore, the two-stage heating of the heating tank 2 and the heater 3 improves the reliability and efficiency of the lubricating oil heating device.

[0053] Specifically, a first lubricating oil pump 13 and a second lubricating oil pump 14 are respectively provided on the first pipeline and the second pipeline. The first lubricating oil pump 13 is connected to the first pipeline, and the second pipeline is connected to the second lubricating oil pump 14. The lubricating oil in the heating oil tank can be output to the test piece 1 through the first lubricating oil pump 13, and the lubricating oil flowing into the test piece 1 can be transported back to the heating oil tank 2 through the second lubricating oil pump 14, so that the lubricating oil circulates in the circulation loop. At the same time, it can provide auxiliary power to the oil supply pump and oil return pump of the test piece 1, and improve the smoothness of the lubricating oil circulation in the circulation loop.

[0054] Based on the above embodiments, in a specific embodiment, the overflow pipe further includes a second overflow pipe 12; the overflow port further includes a second overflow port, which is disposed on the heater 3; one end of the second overflow pipe 12 is connected to the second overflow port, and the other end is connected to the first overflow pipe 11; the pressure relief mechanism further includes a second pressure relief valve 5, which is disposed on the second overflow pipe 12 and connected to the second overflow pipe 12.

[0055] It should be noted that the connection between the second overflow pipe 12 and the first overflow pipe 11 is located on the side of the first pressure relief valve 4 near the overflow tank 6.

[0056] In this embodiment, a second pressure relief valve 5 is provided on the second overflow pipe 12 connected to the heater 3. When the pressure value inside the heater 3 reaches the preset pressure value of the second pressure relief valve 5, the second pressure relief valve 5 opens to relieve pressure on the heater 3. It can perform dual pressure relief in conjunction with the first pressure relief valve 4. When the first pressure relief valve 4 fails, the second pressure relief valve 5 can perform pressure relief. As long as either or both of the first pressure relief valve 4 and the second pressure relief valve 5 do not fail, pressure relief can be achieved, thereby improving the safety of the lubricating oil heating device.

[0057] Based on the above embodiments, in one specific embodiment, there are two overflow tanks 6. A first overflow pipe 11 is vertically arranged, with one end connected to the bottom of one of the overflow tanks 6 and the other end connected to the heating tank 2. The bottom of the other overflow tank 6 is connected to the first overflow pipe 11 via a third pipe. A first pressure relief valve 4 is located below the point where the third pipe connects to the first overflow pipe 11, and below the point where the second overflow pipe connects to the first overflow pipe 11 (e.g., ...). Figure 2 (As shown).

[0058] In this embodiment, by vertically arranging the first overflow pipe 11, the lubricating oil in the two overflow oil tanks 6 flows more easily down the inner wall of the first overflow pipe 11 and is less likely to flow into the second overflow pipe 12. When the pressure in the heating oil tank 2 drops to the preset pressure, the first pressure relief valve 4 can be opened, and the lubricating oil in the two overflow oil tanks 6 will flow into the first overflow pipe 11. Under the action of gravity, it will flow down along the first overflow pipe 11, thereby returning the lubricating oil to the heating oil tank 2 for reuse. At the same time, as much lubricating oil as possible flows into the heating oil tank 2 instead of the heater 3, which facilitates the realization of two-stage heating.

[0059] Based on the above embodiments, in a specific embodiment, a detection mechanism and a control mechanism 10 are also included; the detection mechanism is installed on the oil supply mechanism and is used to detect the temperature and pressure parameters of the lubricating oil; the control mechanism 10 is communicatively connected to the heating oil tank 2, the heater 3, the first pressure relief valve 4 and the detection mechanism.

[0060] Communication connection refers to the communication established between connected devices through the transmission and interaction of signals, including wired connections such as those via wires or network cables, and wireless connections such as WiFi and 4G connections.

[0061] In this embodiment, by setting the detection mechanism on the oil supply mechanism, the temperature and pressure parameters of the lubricating oil in the oil supply mechanism are detected and fed back to the control mechanism 10. The control mechanism 10 automatically adjusts the preset pressure value of the first pressure relief valve 4 according to the temperature and pressure parameters, or actively controls the first pressure relief valve 4 to open and relieve pressure, thereby improving the response speed. At the same time, when the temperature and pressure are too high, the heating oil tank 2 and the heater 3 can be controlled to stop heating the lubricating oil, so as to avoid damage to the equipment due to excessive temperature or pressure, and improve the intelligence level of the lubricating oil heating device.

[0062] Based on the above implementation, in a specific implementation, the first pressure relief valve 4 is an electric pressure relief valve, and the second pressure relief valve 5 is a manual pressure relief valve. The electric pressure relief valve is communicatively connected to the control mechanism 10.

[0063] It should be noted that the preset pressure value of the manual pressure relief valve is greater than that of the electric pressure relief valve.

[0064] In this embodiment, the control mechanism 10 can automatically adjust the preset pressure value of the electric pressure relief valve according to the temperature and pressure parameters. When the pressure value in the heating oil tank 2 reaches the preset pressure value of the electric pressure relief valve, it opens to relieve pressure. When the pressure value in the heating oil tank 2 drops to the preset value, the electric pressure relief valve can be controlled to open, so that the lubricating oil in the overflow oil tank 6 flows back to the heating oil tank 2 for reuse. This is an intelligent process. The manual pressure relief valve, on the other hand, requires manual setting of the preset pressure value. The manual pressure relief valve can work to relieve pressure when the electric pressure relief valve fails. The dual pressure relief through two different types of pressure relief valves improves safety.

[0065] Based on the above implementation, in a specific implementation, the detection mechanism includes multiple sets of sensor assemblies. A set of sensor assemblies is provided on the heating oil tank 2, the heater 3, the first pipeline and the second pipeline respectively. Each set of sensor assemblies includes a temperature sensor 7 and a pressure sensor 8. Both the temperature sensor 7 and the pressure sensor 8 are communicatively connected to the control mechanism 10.

[0066] In this embodiment, the temperature sensor 7 and pressure sensor 8 of the multiple sensor components detect the temperature and pressure parameters of the heating oil tank 2, the heater 3, the first pipeline, and the second pipeline, respectively. These parameters are fed back to the control mechanism 10 for analysis and real-time monitoring. This facilitates the adjustment of the first pressure relief valve 4 to the optimal preset pressure value, real-time monitoring of temperature and pressure parameters, and timely control of the heating oil tank 2 and heater 3 to stop or start working, thus preventing damage to the equipment due to excessive pressure and temperature and affecting its service life.

[0067] Based on the above implementation method, in a specific implementation method, heating rods 9 are provided in both the heating oil tank 2 and the heater 3.

[0068] It should be noted that all heating rods 9 are connected to the control mechanism 10, which allows the control mechanism 10 to control the heating rods 9 to start heating or to stop heating when the temperature is too high.

[0069] In this embodiment, the lubricating oil in the heating oil tank 2 and the heater 3 is heated by the heating rod 9.

[0070] Based on the above implementation method, in a specific implementation method, the outer periphery of the heating oil tank 2, heater 3, first pipeline, second pipeline, first overflow pipeline 11 and overflow oil tank 6 are all covered with heat insulation cotton.

[0071] In this embodiment, the heating oil tank 2, heater 3, first pipeline, second pipeline, first overflow pipeline 11 and overflow oil tank 6 are covered with heat insulation cotton, which can play a role in heat preservation and insulation, and prevent the operator from being burned or the equipment from being damaged.

[0072] Based on the above implementation method, in a specific implementation method, an audible and visual alarm is also included, which is communicatively connected to the control mechanism 10.

[0073] In this embodiment, when the detection mechanism detects that the temperature parameter reaches the preset temperature value or the pressure parameter reaches the preset pressure value, the control mechanism 10 can control the audible and visual alarm to be activated to issue a warning.

[0074] Based on the above implementation method, in a specific implementation method, the control mechanism 10 is a host computer.

[0075] A host computer is a computer that can directly issue control commands, and displays various signal changes (hydraulic pressure, water level, temperature, etc.) on the screen.

[0076] In this embodiment, the operating status of the lubricating oil heating device is displayed and automated control is performed through a host computer, thereby improving the level of intelligence.

[0077] In one embodiment, the host computer analyzes and displays the preset pressure value of the manual pressure relief valve based on the target temperature value of the lubricating oil heating. The operator can manually adjust the preset pressure value of the manual pressure relief valve before the test to facilitate better pressure relief, improve the level of intelligence and safety.

[0078] Based on the above implementation method, in a specific implementation method, the top of the overflow tank is connected to the atmosphere through an air filter 15.

[0079] In this embodiment, the overflowing gas is filtered by the air filter 15 to prevent oil mist from overflowing and polluting the environment.

[0080] In this embodiment, the specific working principle of the lubricating oil heating device is as follows: During the test, the oil outlet of the heater 3 is connected to the oil inlet of the test piece 1, and the oil return port of the heating oil tank 2 is connected to the oil outlet of the test piece, forming a circulation loop. During the test, the lubricating oil heated by the heating oil tank 2 enters the heater 3 for secondary heating and is then transported to the test piece 1 through the oil outlet. After passing through the test piece 1, the lubricating oil returns to the heating oil tank 2 through the oil outlet and the oil return port, realizing the circulation heating and supply of lubricating oil to test the test piece 1. During the heating and circulation of the lubricating oil, the pressure in the oil supply mechanism... Force and temperature will change. When the pressure in the heating oil tank 2 reaches the preset pressure value of the first pressure relief valve 4, the first pressure relief valve 4 opens to release pressure. When the first pressure relief valve 4 is an electric pressure relief valve, the host computer automatically adjusts the preset pressure value of the electric pressure relief valve based on the temperature and pressure parameters detected in real time by the temperature sensor 7 and pressure sensor 8 of multiple sensing components. Alternatively, the host computer can actively control the electric pressure relief valve to open and release pressure when the pressure in the heating oil tank 2 reaches the preset pressure value of the electric pressure relief valve, thereby improving the response speed. Hot air and overflowing lubricating oil enter the overflow oil tank 6 along the first overflow pipe 11. Simultaneously, gas is discharged from the top of the overflow tank 6. When the first pressure relief valve 4 malfunctions, as the internal pressure of the oil supply mechanism increases, when the pressure value in the heater 3 reaches the preset pressure value of the second pressure relief valve 5 (i.e., the manual pressure relief valve), the manual pressure relief valve opens under pressure to release pressure. Hot gas and overflowing lubricating oil enter the overflow tank 6 along the second overflow pipe 12, and are discharged after being filtered by the air filter 15 at the top of the overflow tank 6. When the heating tank 2 and heater 3 stop working, and the pressure and temperature drop to the preset values, the host computer controls the electric pressure relief valve to open. The lubricating oil collected in the overflow tank 6 flows back to the heating tank 2 through the first overflow pipe 11 under the action of gravity for reuse, avoiding waste. Simultaneously, when the temperature parameter reaches a preset value or the pressure parameter reaches a preset value, the heating rod 9 in the heating tank 2 and the heating rod 9 in the heater 3 can be shut off via the host computer to stop heating, and an audible and visual alarm will be activated. Furthermore, the heat insulation cotton covering the heating tank 2, heater 3, first pipe, second pipe, first overflow pipe 11, and the outer periphery of the overflow tank 6 provides heat preservation and insulation. The lubricating oil heating device provided in this embodiment can automatically analyze and set the preset pressure value for pressure relief based on temperature and pressure parameters, exhibiting a high degree of intelligence. It also achieves dual pressure relief through the first pressure relief valve 4 and the second pressure relief valve 5, ensuring high safety. The overflow tank 6 collects and recovers the overflowing lubricating oil, avoiding the risks of waste, operator burns, and equipment damage caused by oil spillage, further improving safety and reliability. This solves the technical problem that existing lubricating oil heating devices cause lubricating oil to overflow during pressure relief, resulting in waste and poor safety.

[0081] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An oil warming device, characterized by comprising: The application relates to a lubricating oil supply device for a test piece, which comprises the following parts: a lubricating oil supply mechanism provided with an oil outlet, an oil return outlet and an overflow outlet, the oil outlet is connected with an oil inlet end of a test piece (1) through a first pipeline, and the oil return outlet is connected with an oil outlet end of the test piece (1) through a second pipeline; a recovery mechanism which is communicated with the overflow outlet of the lubricating oil supply mechanism through an overflow pipeline; a pressure relief mechanism which is arranged on the overflow pipeline and communicated with the overflow pipeline and is used for relieving pressure of the lubricating oil supply mechanism; the recovery mechanism is arranged above the lubricating oil supply mechanism; the recovery mechanism comprises at least one overflow oil tank (6), the bottom of the overflow oil tank (6) is communicated with the overflow outlet through the overflow pipeline, and the top of the overflow oil tank (6) is communicated with the atmosphere; the lubricating oil supply mechanism comprises a warming oil tank (2) and a heater (3), and the heater (3) is communicated with the warming oil tank (2); the overflow outlet comprises a first overflow outlet which is arranged on the warming oil tank (2); the oil outlet is arranged on the heater (3), and the oil return outlet is arranged on the warming oil tank (2); the overflow pipeline comprises a first overflow pipeline (11), one end of the first overflow pipeline (11) is communicated with the first overflow outlet, and the other end of the first overflow pipeline (11) is communicated with the bottom of the overflow oil tank (6); and the pressure relief mechanism comprises a first pressure relief valve (4) which is arranged on the first overflow pipeline (11) and communicated with the first overflow pipeline (11). The overflow pipeline further comprises a second overflow pipeline (12), the overflow outlet further comprises a second overflow outlet which is arranged on the heater (3), one end of the second overflow pipeline (12) is communicated with the second overflow outlet, and the other end of the second overflow pipeline (12) is communicated with the first overflow pipeline (11); the pressure relief mechanism further comprises a second pressure relief valve (5) which is arranged on the second overflow pipeline (12) and communicated with the second overflow pipeline (12). The number of the overflow oil tanks (6) is two, the first overflow pipeline (11) is vertically arranged, one end of the first overflow pipeline (11) is communicated with the bottom of one of the overflow oil tanks (6), and the other end of the first overflow pipeline (11) is communicated with the warming oil tank (2); the bottom of the other overflow oil tank (6) is communicated with the first overflow pipeline (11) through a third pipeline; the first pressure relief valve (4) is located below the position where the third pipeline is communicated with the first overflow pipeline (11) and below the position where the second overflow pipeline is communicated with the first overflow pipeline (11). The device further comprises a detection mechanism and a control mechanism (10); the detection mechanism is arranged on the lubricating oil supply mechanism and is used for detecting temperature and pressure parameters of lubricating oil; and the control mechanism (10) is in communication connection with the warming oil tank (2), the heater (3), the first pressure relief valve (4) and the detection mechanism. The first pressure relief valve (4) is an electric pressure relief valve, the second pressure relief valve (5) is a manual pressure relief valve, and the electric pressure relief valve is in communication connection with the control mechanism (10). ​ ​ ​ ​ ​ ​ 2. The oil warming device according to claim 1, characterized by ​ 3. The oil warming device of claim 2, wherein ​ 4. The oil warming device of claim 3, wherein ​ ​ ​ 5. The oil warming device of claim 4, wherein ​ 6. The oil warming device of claim 4, wherein The detection mechanism comprises multiple groups of sensor assemblies, one group of sensor assemblies is arranged on the warming oil tank (2), the heater (3), the first pipeline and the second pipeline respectively, each group of the sensor assemblies comprises a temperature sensor (7) and a pressure sensor (8), and the temperature sensor (7) and the pressure sensor (8) are in communication connection with the control mechanism (10); And / or, heating rods (9) are arranged in the warming oil tank (2) and the heater (3); And / or, the warming oil tank (2), the heater (3), the first pipeline, the second pipeline, the first overflow pipeline (11) and the overflow oil tank (6) are all wrapped with heat insulation cotton.

7. The oil warming device of claim 4, wherein An audible and visual alarm is further arranged, and the audible and visual alarm is in communication connection with the control mechanism (10); And / or, the control mechanism (10) is an upper computer; And / or, the top of the overflow oil tank is in communication with the atmosphere through an air filter (15).

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