Temperature-controllable two-way hot oil flushing table and control method thereof
By using a bidirectional oil channel controlled by a thyristor controlled heating pipe and an electric valve in the hot oil flushing device, the precise control of the oil temperature and the full cleaning of the cooler interior are achieved, and the problem of difficult oil temperature control and low flushing efficiency in the prior art is solved.
Patent Information
- Application Number
- CN202411859383.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-05-09
AI Technical Summary
The existing hot oil flushing device cannot accurately control the oil temperature, resulting in the heating pipe temperature being too high during the heating process, burning the tar oil, and the flushing direction is fixed, making it difficult to clean the corners inside the cooler, increasing labor costs and difficulty in flushing.
A temperature-controllable bidirectional hot oil flushing table is designed, and a thyristor-controlled heating pipe is used to control the opening and closing of the oil channel through an electric valve to achieve accurate control of the oil temperature, and ensure sufficient cleaning of the cooler interior through the bidirectional flushing path.
Accurate control of oil temperature is achieved, avoiding oil burning, improving flushing efficiency and cleaning effect, reducing labor costs, and ensuring sufficient cleaning of pipelines and coolers by detecting impurities.
Smart Images
Figure CN119964942A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a hot oil flushing device, and more particularly to a temperature-controllable two-way hot oil flushing table and a control method thereof. Background Art
[0002] During the operation of the transformer, since it releases a large amount of heat, it is usually necessary to connect an external cooler to the transformer to ensure safe and stable operation of the transformer. Its working principle is to send the hot oil in the transformer into the cooling pipe in the cooler, and cool the hot oil by blowing air through the coolant. Among them, the coolant has a better cooling effect on the transformer, but since the cooler is usually connected to the transformer, the cleanliness of the internal pipes of the cooler is very important. It is necessary to avoid the generation of gases or impurities harmful to the transformer oil inside the cooler. Effective control of the cleanliness inside the cooler is an important means to maintain safe, stable and economical operation of the transformer.
[0003] As the voltage level of transformers continues to increase, the requirements for cooler cleanliness are becoming more and more stringent. Due to the limitations of the cooler production environment and the many factors that affect internal cleanliness, it is not easy to conduct timely and rapid oil sample testing after flushing. If the oil sample index of the transformer is found to exceed the standard during the operation experiment stage, in order to find the root cause, it will be checked item by item, which will cause huge losses in construction period, labor cost, material cost, transportation cost, reputation, etc. Water coolers and air coolers are cooling components of power transformers. The cleanliness of the water coolers and air coolers has an important impact on the overall operation of the transformer. In order to better control the safe operation of the oil in the transformer, transformer manufacturers have put forward higher requirements for water cooler and air cooler manufacturers. The water coolers and air coolers that need to be provided must meet the various oil sample index requirements.
[0004] At present, there is a hot oil flushing device on the market, which uses hot oil at about 70°C to flush the inside of the pipeline and the cooler through the oil pipeline. The hotter oil can effectively flush the impurities inside the pipeline and the transformer, but the above hot oil flushing device cannot accurately control the oil temperature, that is, the oil used for flushing varies greatly, and the temperature of the heating tube is too high during the heating process, which will burn the oil and lose the cleaning and flushing effect, waste resources, and increase costs. At the same time, the direction of oil flushing is fixed, and there will be flushing dead corners when passing through the corners in the oil pipeline, making flushing difficult. Manual inspection and control are required during the flushing process, which increases labor costs. It is difficult to judge whether the pipeline and the cooler are flushed clean, and the flushing efficiency is low. Summary of the invention
[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a temperature-controllable two-way hot oil flushing station and a control method thereof which have good cleaning effect, precise temperature control, convenient control, high flushing efficiency, and can fully clean the cooler.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature-controllable two-way hot oil flushing station, comprising an oil tank and a cooler, a plurality of oil channels are arranged between the oil tank and the cooler, the oil channels comprise a plurality of oil distribution pipes, each of the oil distribution pipes is provided with an electric valve, the electric valve is used to control the opening and closing of the oil distribution pipe, a heating device is also arranged in the oil tank, the heating device is used to control the temperature of the oil in the oil tank, and the oil circulates in the oil pipeline through an oil pump arranged on the oil channel.
[0007] The present invention is further configured as follows: the oil channel includes a first channel and a second channel, the oil tank is provided with a first opening and a second opening, the first channel is connected to the first opening, the second channel is connected to the second opening, the oil distribution pipeline includes a first oil channel and a second oil channel, the first oil channel is used to connect the first channel and the second channel at the first opening, and the second oil channel is used to connect the first channel and the second channel at the second opening.
[0008] The present invention is further configured as follows: the heating device includes a thyristor arranged outside the oil tank and a heating tube electrically connected to the thyristor, the heating tube includes a plurality of heating wires, and the heating wires are configured to generate heat when the power is turned on.
[0009] Preferably, the cooler includes a cooling body, an upper oil chamber arranged on the top of the cooling body, and a lower oil chamber arranged on the bottom of the cooling body, the lower oil chamber is connected to the first channel, the upper oil chamber is connected to the second channel, and porous plates are provided on the upper oil chamber and the lower oil chamber, the oil enters the cooler through the porous plate and flushes the inner wall of the cooler.
[0010] The present invention is further configured as follows: the device also includes a filter, a filter element is provided in the filter, the filter element is configured to allow oil to pass through and absorb impurities in the oil, and the filter is connected to the oil tank to filter impurities in the oil in the oil tank.
[0011] The present invention also provides a control method for a temperature-controllable two-way hot oil flushing station, which also includes a control system and a detection device arranged in a filter, wherein the control system is used to receive signals and control the opening and closing of an electric valve on an oil distribution pipeline, and the detection device is used to detect the amount of impurities in the filter. The control method includes the following steps: S1, the device is started, and the heating device in the oil tank heats the oil temperature in the oil tank, and the heating time is T1;
[0012] S2, after heating for a period of time T1, the control system opens the electric valves on the first channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump rotates forward, so that the oil flows from the first opening to the second opening, and flushes the first channel and the second oil channel. The flushing time is T2, and the control system is notified to jump to S3 to continue testing;
[0013] S3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the current first oil channel contains impurities, and the process jumps to S2 to continue running. Otherwise, it is determined that the oil in the current first oil channel does not contain impurities, and the process jumps to S4 to continue testing.
[0014] S4, after flushing T2 time period, the control system opens the electric valves of the first oil channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump reverses, so that the oil flows from the second opening to the first opening, and flushes the first oil channel and the second channel, the flushing time is T3, and at the same time jumps to S5 to continue testing;
[0015] S5. After flushing for a period of time T3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the second oil channel currently contains impurities, and the process jumps to S4 to continue running. Otherwise, it is determined that the oil in the second oil channel currently does not contain impurities, and the oil pump stops running to complete the flushing of the pipeline.
[0016] By adopting the above technical scheme, the beneficial effects are as follows: 1. A plurality of oil channels are arranged between the cooler and the oil tank, so that the oil heated in the oil tank is transported to the cooler through the oil channels and flushes the inside of the cooler. The heating device in the oil tank is arranged as a heating tube controlled by a thyristor, with high control accuracy, and the oil channel is divided into a first oil channel and a second oil channel for passing the oil through an oil distribution pipeline. By changing the opening and closing of the electric valve on the oil distribution pipeline, the circulation path of the oil is switched between the first oil channel and the second oil channel. After the oil is flushed in the first oil channel in a first direction, each electric valve switches the current switching state, so that the oil is flushed in the second oil channel in a second direction, thereby achieving sufficient cleaning of the cooler and the inside of the oil pipeline, and the flushed oil is filtered through a filter for filtering impurities after entering the oil tank, thereby improving the subsequent cleaning effect.
[0017] 2. Furthermore, in order to accurately control the heating temperature, the heating device includes a thyristor arranged on the outside of the oil tank and a heating tube electrically connected to the thyristor, the heating tube includes a plurality of heating wires, the thyristor control circuit is simple, and the thyristors for controlling the temperature are arranged in three groups, and the size and phase of the three-phase current are controlled by adjusting the conduction of the three thyristors and the delayed conduction time, so as to realize accurate control of the temperature of the heating device. Generally speaking, in the process of the thyristor controlling the temperature, when the thyristor is turned on, the current passes through the heating tube and the heating device generates heat, otherwise, the heating device stops generating heat, and the temperature of the heating device is accurately controlled by the conduction and cutoff of each thyristor, with good overall stability, safety and reliability, and the ability to accurately control the temperature of the oil, and the heating method is partition heating, so that the hot oil in the heating device heats the flushing oil, and the overall temperature variation is small, which can ensure that the flushing oil can be kept for a long time without deterioration.
[0018] 3. At the same time, in order to fully flush and clean the cooler and the oil pipeline, the oil channel is provided with a plurality of oil distribution pipelines, the oil channel and the oil distribution pipeline are combined, and the first oil channel, the second oil channel, the first channel and the second channel are provided with electric valves. When the first oil channel and the second oil channel are opened and the first channel and the second channel are closed, a first oil channel for passing oil is formed. When the first channel and the second channel are opened and the first oil channel and the second oil channel are closed, a second oil channel for passing oil is formed. The heating oil flows in the first oil channel in a first direction. Internal circulation, after flushing is completed, circulates in the second oil channel in the second direction, and the first direction is opposite to the second direction of oil flow, that is, when the oil circulates in the first direction, the first opening on the oil tank is the oil outlet, and the second opening on the oil tank is the oil inlet, and the oil flows from top to bottom in the radiator. Conversely, when the oil circulates in the second direction, the second opening on the oil tank is the oil outlet, and the first opening is the oil inlet, and the oil flows from bottom to top in the radiator. The oil flushes the inside of the cooler in two opposite directions, so that the inside of the cooler can be fully cleaned, and the cleaning effect is good.
[0019] 4. In the process of cleaning the cooler and the oil pipeline, in order to improve the cleaning efficiency and detect whether the pipeline is flushed, and to prevent the waste of time caused by additional flushing of the cooler, the heating time and the flushing time are set during the hot oil flushing process, that is, after the heating time period T1, the oil temperature in the oil tank rises to a temperature W1 (generally 70°C) suitable for flushing the inside of the cooler, and the electric valves on the first channel and the second channel are opened and the electric valves on the first oil channel and the second oil channel are closed. At the same time, the oil pump rotates forward, so that the oil flows from the first opening to the second opening, and flushes the first channel and the second channel. The oil pump drives the oil with a temperature of W1 to circulate in the first direction in the first oil channel, and the flushing cycle time is set to T2. After the T2 time period, the control system opens the electric valves on the first oil channel and the second oil channel and closes the electric valves on the first channel and the second channel. At the same time, the oil pump reverses, so that the oil flows from the second opening to the second opening. The oil flows from the filter end to the first opening and flushes the first oil channel and the second oil channel. The oil pump drives the oil with a temperature of W1 to flush and circulate in the second oil channel in the second direction. The flushing time is T3. At the same time, the impurity mass at the filter end can be detected during the flushing process. If the impurities at the filter end no longer increase, it means that the oil in the current channel does not contain impurities. The control device controls the oil channel to change direction or complete the flushing. On the contrary, if the impurities at the filter end continue to increase, it is determined that the oil in the current channel contains impurities. The control device controls the oil to circulate in the current channel again. Specifically, T2 and T3 are the times required for the oil to circulate 2 circles in the oil channel. After the T2 and T3 time periods, the impurities at the filter end are detected again, that is, after the oil flows through the entire oil channel from the oil outlet and flows back to the oil inlet, the impurities in the cooler and the pipeline are flushed and then the impurities are detected, which improves the accuracy of the detection, can quickly detect whether the pipeline and the cooler are flushed, and the overall efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the specific structure of an embodiment of a temperature-controllable two-way hot oil flushing station and a control method thereof of the present invention;
[0021] Figure 2 It is a schematic diagram of the specific structure of a flushing structure of a temperature-controllable bidirectional hot oil flushing station and a control method thereof according to an embodiment of the present invention;
[0022] Figure 3 It is an enlarged diagram of the oil distribution pipeline structure of a temperature-controllable two-way hot oil flushing station and a control method thereof according to an embodiment of the present invention;
[0023] Figure 4 A flow chart of a control method of a temperature-controllable two-way hot oil flushing station and a control method thereof according to an embodiment of the present invention;
[0024] Reference numerals in the figure: 1. oil tank; 2. cooler; 21. cooling body; 22. upper oil chamber; 23. lower oil chamber; 24. porous plate; 3. oil channel; 4. oil distribution pipeline; 5. electric valve; 6. heating equipment; 61. thyristor; 62. heating pipe; 7. oil pump; 8. first channel; 9. second channel; 10. first opening; 11. second opening; 12. first oil channel; 13. second oil channel; 14. filter. DETAILED DESCRIPTION
[0025] Reference Figures 1 to 4 The present invention further describes a temperature-controllable bidirectional hot oil flushing station and a control method thereof.
[0026] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.
[0027] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.
[0028] A temperature-controllable two-way hot oil flushing station includes an oil tank 1 and a cooler 2. A plurality of oil channels 3 are provided between the oil tank 1 and the cooler 2. The oil channels 3 include a plurality of oil distribution pipelines 4. Each of the oil distribution pipelines 4 is provided with an electric valve 5. The electric valve 5 is used to control the opening and closing of the oil distribution pipeline 4. A heating device 6 is also provided in the oil tank 1. The heating device 6 is used to control the oil temperature in the oil tank 1. The oil circulates in the oil pipeline through an oil pump 7 provided on the oil channel 3.
[0029] The oil channel 3 includes a first channel 8 and a second channel 9. The oil tank 1 is provided with a first opening 10 and a second opening 11. The first channel 8 is connected to the first opening 10, and the second channel 9 is connected to the second opening 11. The oil distribution pipeline 4 includes a first oil channel 12 and a second oil channel 13. The first oil channel 12 is used to connect the first channel 8 and the second channel 9 at the first opening 10, and the second oil channel 13 is used to connect the first channel 8 and the second channel 9 at the second opening 11.
[0030] The heating device 6 includes a thyristor 61 disposed outside the oil tank 1 and a heating tube 62 electrically connected to the thyristor 61. The heating tube 62 includes a plurality of heating wires, and the heating wires are configured to generate heat when powered on.
[0031] Preferably, the cooler 2 includes a cooling body 21, an upper oil chamber 22 arranged at the top of the cooling body 21, and a lower oil chamber 23 arranged at the bottom of the cooling body 21, the lower oil chamber 23 is connected to the first channel 8, the upper oil chamber 22 is connected to the second channel 9, and a porous plate 24 is provided on the upper oil chamber 22 and the lower oil chamber 23, and the oil enters the cooler 2 through the porous plate 24 and flushes the inner wall of the cooler 2.
[0032] The device further comprises a filter 14 , wherein a filter element is arranged inside the filter 14 , wherein the filter element is configured to allow oil to pass through and absorb impurities in the oil. The filter 14 is connected to the oil tank 1 and is used to filter impurities in the oil in the oil tank 1 .
[0033] A plurality of oil channels 3 are provided between the cooler 2 and the oil tank 1, so that the oil heated in the oil tank 1 is transported to the cooler 2 through the oil channels 3 and flushes the inside of the cooler 2. The heating device 6 in the oil tank 1 is configured as a heating tube 62 controlled by a thyristor 61, with high control accuracy, and the oil channel 3 is divided into a first oil channel 3 and a second oil channel 3 for passing oil through an oil distribution pipeline 4. By changing the opening and closing of the electric valve 5 on the oil distribution pipeline 4, the circulation path of the oil is switched between the first oil channel 3 and the second oil channel 3. After the oil is flushed in the first oil channel 3 in a first direction, each electric valve 5 switches the current switching state, so that the oil is flushed in the second oil channel 3 in a second direction, thereby achieving full cleaning of the cooler 2 and the inside of the oil pipeline, and the flushed oil is filtered of impurities through the filter 14 after entering the oil tank 1, thereby improving the subsequent cleaning effect.
[0034] Furthermore, in order to accurately control the heating temperature, the heating device 6 includes a thyristor 61 arranged on the outside of the oil tank 1 and a heating tube 62 electrically connected to the thyristor 61, the heating tube 62 includes a plurality of heating wires, the thyristor 61 control circuit is simple, and the thyristor 61 for controlling the temperature is arranged in three groups, by adjusting the conduction of the three thyristors 61 and the delay time of the conduction to control the size and phase of the three-phase current, the temperature of the heating device 6 is accurately controlled. Generally speaking, in the process of the thyristor 61 controlling the temperature, when the thyristor 61 is turned on, the current passes through the heating tube 62, and the heating device 6 generates heat, otherwise, the heating device 6 stops generating heat, and the temperature of the heating device 6 is accurately controlled by the conduction and cutoff of each thyristor 61, the overall stability is good, safe and reliable, and the temperature of the oil can be accurately controlled, and the heating method is partition heating, so that the hot oil in the heating device 6 heats the flushing oil, and the overall temperature change is small, which can ensure that the flushing oil can be kept for a long time without deterioration.
[0035] At the same time, in order to fully flush and clean the cooler 2 and the oil pipeline, the oil channel 3 is provided with a plurality of oil distribution pipelines 4, the oil channel 3 is combined with the oil distribution pipeline 4, and the first oil channel 12, the second oil channel 13, the first channel 8 and the second channel 9 are provided with electric valves 5, the first oil channel 12 and the second oil channel 13 are opened and the first channel 8 and the second channel 9 are closed to form a first oil channel 3 for passing oil, the first channel 8 and the second channel 9 are opened and the first oil channel 12 and the second oil channel 13 are closed to form a second oil channel 3 for passing oil, and the heating oil is heated in a first direction in the first direction. The oil circulates in the oil channel 3, and circulates in the second oil channel 3 in the second direction after flushing is completed, and the first direction is opposite to the second direction of oil flow, that is, when the oil circulates in the first direction, the first opening 10 on the oil tank 1 is the oil outlet, and the second opening 11 on the oil tank 1 is the oil inlet, and the oil flows from top to bottom in the radiator. Conversely, when the oil circulates in the second direction, the second opening 11 on the oil tank 1 is the oil outlet, and the first opening 10 is the oil inlet, and the oil flows from bottom to top in the radiator. The oil flushes the inside of the cooler 2 in two opposite directions in the cooler 2, so that the inside of the cooler 2 can be fully cleaned, and the cleaning effect is good.
[0036] The present invention also provides a control method for a temperature-controllable two-way hot oil flushing station, which also includes a control system and a detection device arranged in a filter, wherein the control system is used to receive signals and control the opening and closing of an electric valve on an oil distribution pipeline, and the detection device is used to detect the amount of impurities in the filter. The control method includes the following steps: S1, the device is started, and the heating device in the oil tank heats the oil temperature in the oil tank, and the heating time is T1;
[0037] S2, after heating for a period of time T1, the control system opens the electric valves on the first channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump rotates forward, so that the oil flows from the first opening to the second opening, and flushes the first channel and the second oil channel. The flushing time is T2, and the control system is notified to jump to S3 to continue testing;
[0038] S3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the current first oil channel contains impurities, and the process jumps to S2 to continue running. Otherwise, it is determined that the oil in the current first oil channel does not contain impurities, and the process jumps to S4 to continue testing.
[0039] S4, after flushing T2 time period, the control system opens the electric valves of the first oil channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump reverses, so that the oil flows from the second opening to the first opening, and flushes the first oil channel and the second channel, the flushing time is T3, and at the same time jumps to S5 to continue testing;
[0040] S5. After flushing for a period of time T3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the second oil channel currently contains impurities, and the process jumps to S4 to continue running. Otherwise, it is determined that the oil in the second oil channel currently does not contain impurities, and the oil pump stops running to complete the flushing of the pipeline.
[0041] In the process of cleaning the cooler 2 and the oil pipeline, in order to improve the cleaning efficiency and detect whether the pipeline is flushed, and to prevent the cooler 2 from being flushed additionally and causing a waste of time, the heating time and the flushing time are set during the hot oil flushing process, that is, after the heating time T1, the oil temperature in the oil tank 1 rises to a temperature W1 (generally 70°C) suitable for flushing the inside of the cooler 2, and the electric valves on the first channel 8 and the second channel 9 are opened, and the electric valves 5 on the first oil channel 12 and the second oil channel 13 are closed, and the oil pump 7 rotates forward, so that the oil flows from the first opening 10 to the second opening 11, and flushes the first channel 8 and the second channel 9, and the oil pump 7 drives the oil with a temperature of W1 to flush and circulate in the first oil channel 3 in a first direction, and the flushing cycle time is set to T2. After the T2 time period, the control system opens the electric valves 5 on the first oil channel 12 and the second oil channel 13 and closes the electric valves on the first channel 8 and the second channel 9, and the oil pump 7 reverses, so that the oil flows from the first opening 10 to the second opening 11, and flushes the first channel 8 and the second channel 9. The second opening 11 flows to the first opening 10, and flushes the first oil channel 12 and the second oil channel 13. The oil pump 7 drives the oil with a temperature of W1 to flush and circulate in the second oil channel 3 in the second direction. The flushing time is T3. At the same time, the impurity mass at the filter 14 end can be detected during the flushing process. If the impurities at the filter 14 end no longer increase, it means that the oil in the current channel does not contain impurities. The control device controls the oil channel 3 to change direction or complete the flushing. On the contrary, if the impurities at the filter 14 end continue to increase, it is determined that the oil in the current channel contains impurities. The control device controls the oil to circulate in the current channel again. Specifically, T2 and T3 are the time required for the oil to circulate 2 circles in the oil channel 3. After the T2 and T3 time periods, the impurities at the filter 14 end are detected again, that is, after the oil flows through the entire oil channel 3 from the oil outlet and flows back to the oil inlet, the impurities in the cooler 2 and the pipeline are flushed and then the impurities are detected, which improves the accuracy of the detection, can quickly detect whether the pipeline and the cooler 2 are flushed, and the overall efficiency is high.
[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.
Claims
1. A temperature-controllable two-way hot oil flushing station, characterized in that: The invention comprises an oil tank (1) and a cooler (2), wherein a plurality of oil channels (3) are arranged between the oil tank (1) and the cooler (2), wherein the oil channels (3) comprise a plurality of oil distribution pipelines (4), wherein each of the oil distribution pipelines (4) is provided with an electric valve (5), wherein the electric valve (5) is used to control the opening and closing of the oil distribution pipeline (4), wherein a heating device (6) is arranged in the oil tank (1), wherein the heating device (6) is used to control the temperature of the oil in the oil tank (1), and wherein the oil circulates in the oil passage through an oil pump (7) arranged in the oil channel (3); A control method for a temperature-controllable two-way hot oil flushing station, further comprising a control system and a detection device arranged in a filter, wherein the control system is used to receive a signal and control the opening and closing of an electric valve on an oil distribution pipeline, and the detection device is used to detect the amount of impurities in the filter, and the control method comprises the following steps: S1, the device is started, and a heating device in an oil tank heats the oil temperature in the oil tank, and the heating time is T1; S2, after heating for a period of time T1, the control system opens the electric valves on the first channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump rotates forward, so that the oil flows from the first opening to the second opening, and flushes the first channel and the second oil channel. The flushing time is T2, and the control system is notified to jump to S3 to continue testing; S3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the current first oil channel contains impurities, and the process jumps to S2 to continue running. Otherwise, it is determined that the oil in the current first oil channel does not contain impurities, and the process jumps to S4 to continue testing. S4, after flushing T2 time period, the control system opens the electric valves of the first oil channel and the second oil channel and closes the electric valves on the first oil channel and the second oil channel, and at the same time the oil pump reverses, so that the oil flows from the second opening to the first opening, and flushes the first oil channel and the second channel, the flushing time is T3, and at the same time jumps to S5 to continue testing; S5. After flushing for a period of time T3, the detection device detects impurities at the filter end. If the impurities increase, it is determined that the oil in the second oil channel currently contains impurities, and the process jumps to S4 to continue running. Otherwise, it is determined that the oil in the second oil channel currently does not contain impurities, and the oil pump stops running to complete the flushing of the pipeline.
2. A temperature-controllable two-way hot oil flushing station according to claim 1, characterized in that: The oil channel (3) comprises a first channel (8) and a second channel (9); the oil tank (1) is provided with a first opening (10) and a second opening (11); the first channel (8) is connected to the first opening (10); the second channel (9) is connected to the second opening (11); the oil distribution pipeline (4) comprises a first oil channel (12) and a second oil channel (13); the first oil channel (12) is used to connect the first channel (8) and the second channel (9) at the first opening (10); the second oil channel (13) is used to connect the first channel (8) and the second channel (9) at the second opening (11).
3. A temperature-controllable two-way hot oil flushing station according to claim 1, characterized in that: The heating device (6) comprises a thyristor (61) arranged outside the oil tank (1) and a heating tube (62) electrically connected to the thyristor (61), wherein the heating tube (62) comprises a plurality of heating wires, and the heating wires are configured to generate heat when a power source is turned on.
4. A temperature-controllable two-way hot oil flushing station according to claim 2, characterized in that: The cooler (2) comprises a cooling body (21), an upper oil chamber (22) arranged at the top of the cooling body (21), and a lower oil chamber (23) arranged at the bottom of the cooling body (21); the lower oil chamber (23) is connected to the first channel (8), the upper oil chamber (22) is connected to the second channel (9), and a porous plate (24) is provided on both the upper oil chamber (22) and the lower oil chamber (23); the oil enters the cooler (2) through the porous plate (24) and flushes the inner wall of the cooler (2).
5. A temperature-controllable two-way hot oil flushing station according to claim 1, characterized in that: The invention also comprises a filter (14), wherein a filter element is arranged in the filter (14), and the filter element is configured to allow oil to pass through and absorb impurities in the oil. The filter (14) is connected to the oil tank (1) and is used to filter impurities in the oil in the oil tank (1).