A temperature control method and system for a centrifuge

Abstract

The present application relates to a temperature control method and system for a centrifuge, belonging to the technical field of centrifuge control, and the method includes: when the centrifuge is working, obtaining the current oil temperature of the hydraulic oil; judging whether the current oil temperature is greater than the preset oil temperature; if the current oil temperature is greater than the preset oil temperature, obtaining a cooling instruction based on the current oil temperature and the preset oil temperature; lowering the current oil temperature based on the cooling instruction; obtaining the temperature of the hydraulic oil after cooling within a preset period of time as the adjusted temperature; judging whether the adjusted temperature matches the preset oil temperature; if not, obtaining a speed control instruction to adjust the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature. The present application has the effect of reducing the trouble of temperature control and reducing the workload of workers.

Description

Technical Field

[0001] The present application relates to the technical field of centrifuge control, and in particular to a temperature control method for a centrifuge. Background Art

[0002] The piston push centrifuge is a continuously operated filtering centrifuge. Under high-speed operation, the slurry is continuously fed in through the feed pipe and flows along the inner wall of the conical distribution plate to the filter screen of the drum. Hydraulic oil is an important medium in the operation of the piston push centrifuge. To a certain extent, the viscosity of the hydraulic oil will affect the working efficiency and stability of the centrifuge. Therefore, maintaining the viscosity of the hydraulic oil is an important task during the use of the centrifuge.

[0003] At present, the viscosity of hydraulic oil is basically controlled by temperature control. The temperature control method of hydraulic oil is usually to set the corresponding temperature control point, and then monitor the temperature of the hydraulic oil through relevant staff, and then manually adjust the temperature of the hydraulic oil.

[0004] Controlling the temperature in the above manner is rather troublesome and requires real-time monitoring by staff, which results in a large workload and is prone to errors. Summary of the invention

[0005] In order to reduce the trouble of temperature control and reduce the workload of workers, the present application provides a temperature control method and system for a centrifuge.

[0006] In a first aspect, the present application provides a temperature control method for a centrifuge, which adopts the following technical solution:

[0007] A temperature control method for a centrifuge, comprising:

[0008] When the centrifuge is working, the current oil temperature of the hydraulic oil is obtained;

[0009] Determining whether the current oil temperature is greater than a preset oil temperature;

[0010] If the current oil temperature is greater than the preset oil temperature, obtaining a cooling instruction based on the current oil temperature and the preset oil temperature;

[0011] reducing the current oil temperature based on the temperature reduction instruction;

[0012] Acquiring the temperature of the hydraulic oil after cooling down within a preset period of time as the adjusted temperature;

[0013] Determining whether the adjusted temperature matches the preset oil temperature;

[0014] If they do not match, a speed adjustment instruction is obtained to adjust the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature.

[0015] By adopting the above technical solution, after the centrifuge starts working, it is determined whether the current oil temperature is greater than the preset oil temperature, and whether the temperature of the hydraulic oil is too high. Then, the hydraulic oil can be cooled by a cooling instruction. Then, according to the matching relationship between the adjusted temperature and the preset oil temperature, the temperature of the hydraulic oil is adjusted by adjusting the flow rate of the coolant when there is a mismatch, so that the adjusted temperature matches the preset oil temperature. During the temperature adjustment process, workers do not need to adjust, thereby reducing the trouble of temperature adjustment and reducing the workload of workers.

[0016] Preferably, the obtaining of the speed regulation instruction to regulate the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature includes:

[0017] When the adjusted temperature is greater than the preset oil temperature, determining that the adjustment instruction is an acceleration instruction;

[0018] Increasing the flow rate of the coolant based on the acceleration instruction so that the adjusted temperature matches the preset oil temperature;

[0019] When the adjusted temperature is lower than the preset oil temperature, determining that the adjustment instruction is a deceleration instruction;

[0020] The flow rate of the coolant is reduced based on the deceleration instruction so that the adjusted temperature matches the preset oil temperature.

[0021] By adopting the above technical solution, according to the relationship between the adjusted temperature and the preset oil temperature, the adjustment instruction can be determined as an acceleration instruction or a deceleration instruction, and then the coolant can be adjusted to accelerate the flow or decelerate the flow, which is convenient for better adjustment of the temperature of the hydraulic oil.

[0022] Preferably, before increasing the flow rate of the coolant based on the acceleration instruction so that the adjusted temperature matches the preset oil temperature, the method further includes:

[0023] Obtaining the current flow rate of the coolant;

[0024] Determining whether the current flow speed is equal to a preset maximum flow speed;

[0025] If yes, obtain cooling instructions;

[0026] A refrigeration device that controls the coolant based on the cooling command reduces the temperature of the coolant.

[0027] By adopting the above technical solution, when the current flow velocity is equal to the maximum flow velocity, it is proved that the cooling effect cannot be improved by accelerating the coolant at this time. Therefore, the cooling device is controlled by the refrigeration instruction to reduce the temperature of the coolant, thereby improving the cooling effect on the hydraulic oil.

[0028] Preferably, after obtaining the speed regulation instruction to regulate the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature, the method further includes:

[0029] Obtaining a required flow speed of the coolant based on the speed regulation instruction;

[0030] Obtaining an actual flow rate of the coolant;

[0031] Determining whether the actual flow speed matches the required flow speed;

[0032] If they do not match, obtaining the rotation angle of the regulating valve that controls the flow rate of the coolant;

[0033] Acquiring a required angle of the regulating valve based on the speed regulation instruction;

[0034] Determining whether the rotation angle matches the required angle;

[0035] If the rotation angle matches the required angle, abnormal information of the coolant pipeline is obtained;

[0036] If the rotation angle does not match the required angle, abnormal information of the regulating valve is obtained.

[0037] By adopting the above technical solution, it is possible to determine whether the actual flow velocity matches the required flow velocity. When they do not match, it is possible to determine whether the rotation angle matches the required angle. This can determine whether the coolant pipeline is abnormal or the regulating valve is abnormal, making it easier to determine the cause of the abnormal cooling.

[0038] Preferably, after obtaining the speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature, the method further includes:

[0039] Obtaining the temperature change value of the hydraulic oil within the same continuous time period;

[0040] When the temperature change value gradually increases, temperature control abnormality information is obtained;

[0041] When the temperature change value gradually decreases, normal temperature control information is obtained.

[0042] By adopting the above technical solution, it is possible to determine whether the temperature control is normal according to the changing trend of the temperature change value, and the temperature of the hydraulic oil can be better controlled.

[0043] Preferably, after obtaining the temperature control abnormality information, the method further includes:

[0044] Acquiring an infrared image of the centrifuge;

[0045] Obtaining a regional temperature of a preset area based on the infrared image;

[0046] Determining whether the temperature of the area is greater than a preset maximum temperature;

[0047] If the temperature of the area is greater than the preset maximum temperature, obtaining the corresponding preset area as an abnormal area;

[0048] Device abnormality information is obtained based on the abnormal area.

[0049] By adopting the above technical solution, the regional temperature is determined according to the infrared image, and then when the regional temperature is greater than the preset maximum temperature, the equipment abnormality information can be obtained according to the abnormal area, so as to facilitate the staff to inspect and repair the centrifuge.

[0050] As a preference, it also includes:

[0051] Before the centrifuge starts working, obtaining the ambient temperature;

[0052] Obtaining the required temperature of the hydraulic oil;

[0053] Acquire heating time based on the ambient temperature and the required temperature;

[0054] Obtaining a preset start time of the centrifuge;

[0055] Acquire a preheating start time based on the preset power-on time and the heating duration;

[0056] Preheating of the hydraulic oil is started based on the preheating start time.

[0057] By adopting the above technical solution, the preheating start time is obtained according to the preset start time and heating time, and then the hydraulic oil is preheated according to the preheating start time, which can ensure that the centrifuge can be started at the preset time as much as possible, and the working efficiency of the centrifuge can be improved.

[0058] In a second aspect, the present application provides a temperature control system for a centrifuge, which adopts the following technical solution:

[0059] A temperature control system for a centrifuge, comprising:

[0060] A first temperature acquisition module is used to acquire the current oil temperature of the hydraulic oil after the centrifuge is working;

[0061] A first temperature judgment module, used to judge whether the current oil temperature is greater than a preset oil temperature;

[0062] A first instruction acquisition module, configured to acquire a cooling instruction based on the current oil temperature and the preset oil temperature if the current oil temperature is greater than the preset oil temperature;

[0063] A temperature control module, configured to reduce the current oil temperature based on the temperature reduction instruction;

[0064] A second temperature acquisition module is used to acquire the temperature of the hydraulic oil after cooling down within a preset period of time as the adjusted temperature;

[0065] A second temperature judgment module, used to judge whether the adjusted temperature matches the preset oil temperature;

[0066] The second instruction acquisition module is used to acquire a speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature if there is no match.

[0067] By adopting the above technical solution, according to the information transmission between each module, after the centrifuge starts working, it is determined whether the current oil temperature is greater than the preset oil temperature, and whether the temperature of the hydraulic oil is too high. Then, the hydraulic oil can be cooled by a cooling instruction. Then, according to the matching relationship between the adjusted temperature and the preset oil temperature, the temperature of the hydraulic oil is adjusted by adjusting the flow rate of the coolant when there is a mismatch, so that the adjusted temperature matches the preset oil temperature. During the temperature adjustment process, workers do not need to adjust, thereby reducing the trouble of temperature control and reducing the workload of workers.

[0068] In summary, the present application includes at least one of the following beneficial technical effects:

[0069] 1. After the centrifuge starts working, it determines whether the current oil temperature is greater than the preset oil temperature, and whether the temperature of the hydraulic oil is too high. Then, the hydraulic oil can be cooled down through a cooling instruction. Then, according to the matching relationship between the adjusted temperature and the preset oil temperature, the temperature of the hydraulic oil is adjusted by adjusting the flow rate of the coolant when there is a mismatch, so that the adjusted temperature matches the preset oil temperature. During the temperature adjustment process, workers do not need to adjust, which can reduce the trouble of temperature control and reduce the workload of workers;

[0070] 2. According to the relationship between the adjusted temperature and the preset oil temperature, the adjustment instruction can be determined as an acceleration instruction or a deceleration instruction, and then the coolant can be adjusted to accelerate or decelerate the flow, so as to better adjust the temperature of the hydraulic oil;

[0071] 3. The preheating start time is obtained according to the preset start time and heating time, and then the hydraulic oil is preheated according to the preheating start time, which can ensure that the centrifuge can be started at the preset time as much as possible, and can improve the working efficiency of the centrifuge. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 It is a flow chart of a temperature control method of a centrifuge provided in an embodiment of the present application;

[0073] Figure 2 It is a flowchart of step S11 to step S14 in one embodiment of the present application;

[0074] Figure 3 is a flowchart of steps S21 to S24 in one embodiment of the present application;

[0075] Figure 4 is a flowchart of steps S31 to S38 in one embodiment of the present application;

[0076] Figure 5 is a flowchart of step S41 to step S43 in one embodiment of the present application;

[0077] Figure 6 is a flowchart of steps S51 to S55 in one embodiment of the present application;

[0078] Figure 7 is a flowchart of steps S61 to S66 in one embodiment of the present application;

[0079] Figure 8 It is a structural block diagram of a temperature control system of a centrifuge provided in an embodiment of the present application.

[0080] Description of reference numerals:

[0081] 1. First temperature acquisition module; 2. First temperature judgment module; 3. First instruction acquisition module; 4. Temperature control module; 5. Second temperature acquisition module; 6. Second temperature judgment module; 7. Second instruction acquisition module. DETAILED DESCRIPTION

[0082] The following is combined with Figures 1 to 8 This application is described in further detail.

[0083] The embodiment of the present application discloses a temperature control method for a centrifuge.

[0084] Reference Figure 1 , the temperature control methods of the centrifuge include:

[0085] S1. After the centrifuge is working, obtain the current oil temperature of the hydraulic oil;

[0086] S2. Determine whether the current oil temperature is greater than the preset oil temperature;

[0087] S3. If the current oil temperature is greater than the preset oil temperature, a cooling instruction is obtained based on the current oil temperature and the preset oil temperature;

[0088] S4. lowering the current oil temperature based on the cooling instruction;

[0089] S5. Obtaining the temperature of the hydraulic oil after cooling within a preset period of time as the adjusted temperature;

[0090] S6. Determine whether the adjusted temperature matches the preset oil temperature;

[0091] S7. If they do not match, a speed control instruction is obtained to adjust the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature.

[0092] Hydraulic oil is an important raw material in the normal operation of the piston push centrifuge. During the centrifugal process, a large amount of heat will be generated due to the rapid centrifugal action. This heat will increase the temperature of the hydraulic oil through heat conduction. Therefore, it is necessary to control the temperature of the hydraulic oil.

[0093] Specifically, when the centrifuge is working, the current oil temperature of the hydraulic oil is obtained, which can be obtained by measuring with a temperature sensor set in the hydraulic oil tank of the centrifuge. Then, it is determined whether the current oil temperature is greater than a preset oil temperature, which is the temperature at which the hydraulic oil works normally in the centrifuge, that is, the temperature at which the hydraulic oil works normally in the centrifuge with the required viscosity.

[0094] If the current oil temperature is equal to the preset oil temperature, it proves that the temperature of the hydraulic oil is normal and no other operations are required. Before the centrifuge works, the hydraulic oil needs to be heated. After heating to the preset oil temperature, the centrifuge starts working.

[0095] If the current oil temperature is greater than the preset oil temperature, it proves that the hydraulic oil needs to be cooled down at this time, so a cooling instruction is obtained according to the current oil temperature and the preset oil temperature, that is, a temperature difference is obtained according to the current oil temperature and the preset oil temperature, and then a cooling instruction is generated according to the temperature difference, and the hydraulic oil cooling device is controlled according to the cooling instruction to cool the hydraulic oil. Among them, the cooling device can be a coolant cooling circulation device.

[0096] After the hydraulic oil cooling device cools the hydraulic oil, the temperature of the hydraulic oil after cooling within the preset period is obtained as the adjusted temperature. The preset period can be set according to actual conditions, that is, after the cooling device cools the hydraulic oil for a fixed period of time, the adjusted temperature is obtained within the preset period of time. Of course, the fixed period of time can also be set according to actual conditions.

[0097] Then determine whether the adjusted temperature matches the preset oil temperature, where the preset oil temperature is a range value. In the process of obtaining the temperature difference, you can set any value within the range value to calculate the temperature difference with the current oil temperature. If the adjusted temperature is within the range value, it proves that it matches, otherwise it does not match.

[0098] If the adjusted temperature matches the preset temperature, it proves that the cooling instruction is accurate in adjusting the temperature of the hydraulic oil, and no additional adjustment is required. If the adjusted temperature does not match the preset temperature, it proves that the cooling instruction is not accurate enough in adjusting the temperature of the hydraulic oil. In order to make the temperature of the hydraulic oil more in line with the requirements, the speed control instruction is obtained at this time.

[0099] Then, the flow rate of the coolant in the cooling device is controlled according to the speed control instruction, so that the flow rate of the coolant is increased or decreased, and the adjusted temperature is matched with the preset oil temperature. Therefore, workers do not need to adjust the temperature during the temperature adjustment process, which can reduce the trouble of temperature adjustment and reduce the workload of workers.

[0100] Reference Figure 2 In order to facilitate determining the speed regulation mode of the coolant, in another embodiment, obtaining the speed regulation instruction to regulate the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature includes:

[0101] S11. When the adjusted temperature is greater than the preset oil temperature, the adjustment instruction is determined to be an acceleration instruction;

[0102] S12. Based on the acceleration instruction to increase the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature;

[0103] S13. When the adjusted temperature is lower than the preset oil temperature, the adjustment instruction is determined to be a deceleration instruction;

[0104] S14. Based on the deceleration instruction, the flow rate of the coolant is reduced so that the adjusted temperature matches the preset oil temperature.

[0105] Specifically, when the adjusted temperature does not match the preset oil temperature, and the adjusted temperature is greater than the preset oil temperature, it proves that the cooling effect at this time is insufficient. Therefore, the adjustment instruction at this time is an acceleration instruction. According to the acceleration instruction, the speed of the power pump in the cooling device is controlled to increase, thereby increasing the flow rate of the coolant in the cooling pipe of the cooling device, so that the heat dissipation rate of the hydraulic oil is greater than the heating rate, so that the coolant can take away more heat in the hydraulic oil, thereby controlling the adjusted temperature to decrease, and finally making the adjusted temperature match the preset oil temperature.

[0106] If the adjusted temperature is lower than the preset oil temperature, it proves that the temperature drops too much at this time. Therefore, the adjustment instruction is a deceleration instruction. According to the deceleration instruction, the speed of the power pump in the cooling device is controlled to decrease, thereby reducing the flow rate of the coolant in the cooling pipe of the cooling device, so that the heat dissipation rate of the hydraulic oil is lower than the heating rate, so that the coolant can take away less heat in the hydraulic oil, thereby controlling the increase in the adjusted temperature, and finally matching the adjusted temperature with the preset oil temperature.

[0107] In another embodiment, when the adjusted temperature matches the preset oil temperature, the flow rate of the coolant is set to a fixed rate, so that the heat dissipation rate of the hydraulic oil is equal to the heating rate as much as possible. In addition, through the above method, the temperature of the hydraulic oil can be better adjusted, so that the viscosity of the hydraulic oil can better meet the use requirements of the centrifuge.

[0108] Reference Figure 3 When the speed of the power pump of the refrigeration device has reached the maximum power, the flow rate of the coolant cannot be further increased. In order to continue to cool the hydraulic oil, in another embodiment, before increasing the flow rate of the coolant based on the acceleration instruction so that the adjusted temperature matches the preset oil temperature, it also includes:

[0109] S21. Get the current flow rate of the coolant;

[0110] S22. Determine whether the current flow speed is equal to the preset maximum flow speed;

[0111] S23. If yes, obtain cooling instructions;

[0112] S24. Controlling the cooling device of the coolant to lower the temperature of the coolant based on the cooling instruction.

[0113] Specifically, before increasing the flow rate of the coolant based on the acceleration instruction, the current flow rate of the coolant is obtained, which can be obtained by measuring with a flow rate sensor. Then, it is determined whether the current flow rate is equal to a preset maximum flow rate, wherein the maximum flow rate refers to the flow rate of the coolant of the power pump of the cooling device at the highest power.

[0114] If the current flow rate is less than the maximum flow rate, it indicates that the coolant speed can be further increased, so the subsequent steps can be continued, that is, based on the acceleration instruction to increase the coolant flow rate so that the adjusted temperature matches the preset oil temperature.

[0115] If the current flow rate is equal to the maximum flow rate, it proves that the coolant cannot continue to speed up at this time. Therefore, a refrigeration instruction is obtained at this time, and then the refrigeration device of the coolant, such as a refrigerator, is controlled according to the refrigeration instruction to perform refrigeration, thereby reducing the temperature of the coolant. In addition, the coolant can take away more heat from the hydraulic oil during the flow process, thereby achieving a cooling effect on the hydraulic oil.

[0116] Therefore, through the above-mentioned method, the hydraulic oil can be better cooled, and the viscosity of the hydraulic oil can be better guaranteed, so that the centrifuge can work better, the possibility of damage to the centrifuge can be reduced, and the service life of the centrifuge can be increased.

[0117] Reference Figure 4In order to facilitate the determination of abnormal problems during the cooling process, in another embodiment, after obtaining the speed adjustment instruction to adjust the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature, it also includes:

[0118] S31. Obtaining the required flow rate of the coolant based on the speed control instruction;

[0119] S32. Get the actual flow rate of the coolant;

[0120] S33. Determine whether the actual flow rate matches the required flow rate;

[0121] S34. If it does not match, obtain the rotation angle of the regulating valve that controls the flow rate of the coolant;

[0122] S35. Obtaining the required angle of the regulating valve based on the speed control instruction;

[0123] S36. Determine whether the rotation angle matches the required angle;

[0124] S37. If the rotation angle matches the required angle, the abnormal information of the coolant pipeline is obtained;

[0125] S38. If the rotation angle does not match the required angle, obtain the abnormal information of the regulating valve.

[0126] Specifically, after obtaining the speed control instruction to adjust the flow rate of the coolant, the required flow rate of the coolant is obtained according to the speed control instruction. That is, the system pre-stores the correlation between the flow rate of the coolant and the rotation angle of the regulating valve. The speed control instruction includes an adjustment value for the angle of the regulating valve. After obtaining the adjustment value, the corresponding rotation angle can be obtained, which is the required angle.

[0127] Then, the actual flow rate of the coolant is obtained, which can also be obtained by measuring with a flow rate sensor. Then, it is determined whether the actual flow rate matches the required flow rate. The required flow rate can be a range value. If the actual flow rate is within the range value, it matches, otherwise it does not match.

[0128] If the actual flow speed matches the required flow speed, it proves that the flow speed of the coolant is normal. If the actual flow speed does not match the required flow speed, in order to further determine the cause of the abnormality, the current rotation angle of the regulating valve that controls the flow of the coolant is obtained, and the rotation angle can be obtained by measuring with an angle sensor. The regulating valve can be set as a ball valve.

[0129] Then, the required angle of the regulating valve is obtained according to the speed control instruction. The acquisition method can be that the system pre-stores the correlation between the rotation angle of the regulating valve and the flow speed. The corresponding flow speed, that is, the required flow speed, can be obtained to obtain the rotation angle of the regulating valve, that is, the required angle. Then, it is determined whether the rotation angle matches the required angle. The required angle can also be a range. If the rotation angle is within the range value, it matches, otherwise it does not match.

[0130] If the rotation angle matches the required angle, it proves that the actual flow rate of the coolant does not match the required flow rate. There is a high probability that there is an abnormality in the coolant pipeline, such as a pipe blockage. Therefore, the abnormal information of the coolant pipeline is obtained and output at this time. If the rotation angle does not match the required angle, it proves that the actual flow rate of the coolant does not match the required flow rate. There is a high probability that the rotation of the regulating valve is abnormal. At this time, the abnormal information of the regulating valve is obtained and output. In this way, the abnormalities that occur during the cooling process can be confirmed, and it is convenient to remind the relevant staff, so that the staff can promptly check and eliminate the faults in the cooling process and ensure the normal operation of the centrifuge as much as possible.

[0131] Reference Figure 5 In order to timely discover abnormalities in the temperature control process, in another embodiment, after obtaining the speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature, it also includes:

[0132] S41. Obtaining the temperature change value of the hydraulic oil in the same continuous period;

[0133] S42. When the temperature change value gradually increases, abnormal temperature control information is obtained;

[0134] S43. When the temperature change value gradually decreases, normal temperature control information is obtained.

[0135] Specifically, after obtaining the speed control instruction to adjust the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature, the temperature change value of the hydraulic oil in the same continuous time period is obtained, that is, in multiple continuous time periods of the same length, the temperature values ​​of the hydraulic oil at the beginning and end of the time period are obtained, and then the difference between the two temperature values ​​is obtained, which is the temperature change value.

[0136] Then, the changing trend of the temperature change value is obtained. For example, if the temperature change value in the first time period is 1, the temperature change value in the second time period is 2, the temperature change value in the third time period is 4, and the temperature change value in the fourth time period is 7, it can be determined that the changing trend is gradually increasing, otherwise it is gradually decreasing.

[0137] If the temperature change value is gradually increasing, it means that the temperature change of the hydraulic oil is gradually increasing, proving that the temperature control effect of the hydraulic oil is insufficient, and this indicates that the temperature control is abnormal. If the temperature change value is gradually decreasing, it means that the temperature of the hydraulic oil is gradually stabilizing, proving that the temperature control effect of the hydraulic oil is normal. Therefore, by monitoring the temperature change value of the hydraulic oil, it is possible to determine whether the temperature control of the hydraulic oil is normal, which makes it convenient for maintenance personnel to take corresponding countermeasures in a timely manner.

[0138] Reference Figure 6 In order to facilitate finding the fault location of the centrifuge and monitor the temperature of the centrifuge at the same time, in another embodiment, after obtaining the temperature control abnormality information, it also includes:

[0139] S51. Obtaining an infrared image of a centrifuge;

[0140] S52. Obtaining the regional temperature of the preset area based on the infrared image;

[0141] S53. Determine whether the regional temperature is greater than the preset maximum temperature;

[0142] S54. If the regional temperature is greater than the preset maximum temperature, the corresponding preset region is obtained as an abnormal region;

[0143] S55. Obtain device abnormality information based on the abnormal area.

[0144] Specifically, after obtaining the abnormal temperature control information, an infrared image of the centrifuge is obtained. The acquisition method can be obtained by shooting with an infrared camera, and then the regional temperature of the preset area is obtained based on the infrared image. The preset area can be set according to actual conditions, such as the power pump area, the oil tank area, and the bearing area.

[0145] The regional temperature is obtained by obtaining different colors of different regions in the infrared image. Different colors correspond to different temperatures. By obtaining the corresponding color, the corresponding temperature, ie, the regional temperature, can be obtained.

[0146] Then determine whether the regional temperature is greater than the preset maximum temperature. For example, for the bearing area, the preset maximum temperature is the maximum temperature of the bearing area during normal rotation at the maximum speed. If the regional temperature is greater than the preset maximum temperature, it proves that the current area is abnormal. At this time, the corresponding preset area is obtained as the abnormal area.

[0147] Then, the abnormal information of the equipment is obtained according to the abnormal area, where the abnormal information includes the abnormal location and the abnormal type. Taking the bearing area as an example, the abnormal information of the equipment at this time includes that the bearing area is abnormal and the abnormal type is abnormal heating of the bearing. This can better determine the location of the temperature abnormality of the centrifuge, making it easier for the staff to carry out targeted maintenance.

[0148] Reference Figure 7 When the centrifuge is not working for a long time, the temperature of the hydraulic oil will gradually decrease to the same as the ambient temperature. Before the centrifuge is started again, the hydraulic oil needs to be heated before use. Therefore, in another embodiment, before the centrifuge is started, the method further includes:

[0149] S61. Get the ambient temperature;

[0150] S62. Obtain the required temperature of the hydraulic oil;

[0151] S63. Obtaining heating time based on ambient temperature and required temperature;

[0152] S64. Obtaining the preset start time of the centrifuge;

[0153] S65. Obtaining the preheating start time based on the preset power-on time and heating duration;

[0154] S66. Start preheating the hydraulic oil based on the preheating start time.

[0155] Specifically, before the centrifuge starts working, the ambient temperature is obtained, which can also be obtained by measuring with a temperature sensor. Then, the required temperature of the hydraulic oil is obtained, which is the temperature at which the pre-stored hydraulic oil works normally.

[0156] Then, the heating time is obtained according to the ambient temperature and the required temperature, that is, the temperature difference is obtained according to the required temperature and the ambient temperature, and then the heating time is obtained according to the temperature difference. The acquisition method can be that the system has a pre-stored relationship table of heating time and temperature difference, and the corresponding heating time can be obtained by obtaining the corresponding temperature difference.

[0157] Then, the preset start time of the centrifuge is obtained, and the preset start time can be set according to the actual situation. Then, the preheating start time is obtained according to the preset start time and the heating time, that is, the preset start time is subtracted from the heating time, and the obtained time is the preheating start time.

[0158] Finally, based on the preheating start time, the hydraulic oil starts to be preheated, that is, the heating device is controlled to heat the hydraulic oil from the preheating start time, and the heating device can be a heating wire or a hot steam device. Thus, the centrifuge can be preheated, which can save heating time.

[0159] The implementation principle of a temperature control method for a centrifuge in an embodiment of the present application is as follows: after the centrifuge is working, the current oil temperature of the hydraulic oil is obtained, and then it is determined whether the current oil temperature is greater than the preset oil temperature, so as to determine whether the temperature of the hydraulic oil is too high. If the current oil temperature is greater than the preset oil temperature, a cooling instruction is obtained according to the current oil temperature and the preset oil temperature, and then the hydraulic oil can be cooled by the cooling instruction. Then, the temperature of the hydraulic oil after cooling within a preset period of time is obtained as the adjusted temperature, and then according to the matching relationship between the adjusted temperature and the preset oil temperature, when there is a mismatch, the temperature of the hydraulic oil is adjusted by adjusting the flow rate of the coolant so that the adjusted temperature matches the preset oil temperature. Workers do not need to make adjustments during the temperature adjustment process, thereby reducing the trouble of temperature control and reducing the workload of workers.

[0160] The embodiment of the present application also discloses a temperature control system for a centrifuge, which can achieve the same technical effect as the temperature control method for a centrifuge described above.

[0161] Reference Figure 8 , the temperature control system of the centrifuge includes:

[0162] The first temperature acquisition module 1 is used to acquire the current oil temperature of the hydraulic oil after the centrifuge is working;

[0163] The first temperature judgment module 2 is used to judge whether the current oil temperature is greater than the preset oil temperature;

[0164] A first instruction acquisition module 3, for acquiring a cooling instruction based on the current oil temperature and the preset oil temperature if the current oil temperature is greater than the preset oil temperature;

[0165] The temperature control module 4 is used to reduce the current oil temperature based on the temperature reduction instruction;

[0166] The second temperature acquisition module 5 is used to acquire the temperature of the hydraulic oil after the temperature is reduced within a preset period of time as the adjusted temperature;

[0167] The second temperature judgment module 6 is used to judge whether the adjusted temperature matches the preset oil temperature;

[0168] The second instruction acquisition module 7 is used to acquire a speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature if there is no match.

[0169] Specifically, when the centrifuge is working, the first temperature acquisition module 1 acquires the current oil temperature of the hydraulic oil and sends it to the first temperature judgment module 2 connected thereto. Then the first judgment module judges whether the current oil temperature is greater than the preset oil temperature and sends the judgment result to the first instruction acquisition module 3 connected thereto.

[0170] When the current oil temperature is greater than the preset oil temperature, the first instruction acquisition module 3 acquires a cooling instruction according to the current oil temperature and the preset oil temperature, and sends it to the temperature control module 4 connected thereto, and then the temperature control module 4 lowers the current oil temperature according to the cooling instruction.

[0171] Next, the second temperature acquisition module 5 acquires the temperature of the hydraulic oil after cooling within the preset period as the adjusted temperature, and sends it to the second temperature judgment module 6 connected thereto. Then the second temperature judgment module 6 judges whether the adjusted temperature matches the preset temperature, and sends the judgment result to the second instruction acquisition module 7 connected thereto.

[0172] Finally, when the adjusted temperature does not match the preset temperature, the second instruction acquisition module 7 acquires the speed adjustment instruction, thereby adjusting the flow speed of the coolant to make the adjusted temperature match the preset oil temperature. During the temperature adjustment process, workers do not need to adjust, thereby reducing the trouble of temperature adjustment and the workload of workers.

[0173] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A temperature control method for a centrifuge, characterized in that: include: When the centrifuge is working, the current oil temperature of the hydraulic oil is obtained; Determining whether the current oil temperature is greater than a preset oil temperature; If the current oil temperature is greater than the preset oil temperature, obtaining a cooling instruction based on the current oil temperature and the preset oil temperature; reducing the current oil temperature based on the temperature reduction instruction; Acquiring the temperature of the hydraulic oil after cooling down within a preset period of time as the adjusted temperature; Determining whether the adjusted temperature matches the preset oil temperature; If they do not match, obtaining a speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature; After obtaining the speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature, the method further includes: Obtaining the temperature change value of the hydraulic oil within the same continuous time period; When the temperature change value gradually increases, temperature control abnormality information is obtained; When the temperature change value gradually decreases, normal temperature control information is obtained; After obtaining the abnormal temperature control information, the method further includes: acquiring an infrared image of the centrifuge; Obtaining a regional temperature of a preset area based on the infrared image; Determining whether the temperature of the area is greater than a preset maximum temperature; If the temperature of the area is greater than the preset maximum temperature, obtaining the corresponding preset area as an abnormal area; Device abnormality information is obtained based on the abnormal area.

2. The temperature control method according to claim 1, characterized in that: The obtaining of the speed regulation instruction to regulate the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature includes: When the adjusted temperature is greater than the preset oil temperature, determining that the adjustment instruction is an acceleration instruction; Increasing the flow rate of the coolant based on the acceleration instruction so that the adjusted temperature matches the preset oil temperature; When the adjusted temperature is lower than the preset oil temperature, determining that the adjustment instruction is a deceleration instruction; The flow rate of the coolant is reduced based on the deceleration instruction so that the adjusted temperature matches the preset oil temperature.

3. The temperature control method according to claim 2, characterized in that: Before increasing the flow rate of the coolant based on the acceleration instruction so that the adjusted temperature matches the preset oil temperature, the method further includes: Obtaining the current flow rate of the coolant; Determining whether the current flow speed is equal to a preset maximum flow speed; If yes, obtain cooling instructions; A refrigeration device that controls the coolant based on the cooling command reduces the temperature of the coolant.

4. The temperature control method according to claim 1, characterized in that: After obtaining the speed adjustment instruction to adjust the flow speed of the coolant so that the adjusted temperature matches the preset oil temperature, the method further includes: Obtaining a required flow speed of the coolant based on the speed regulation instruction; Obtaining an actual flow rate of the coolant; Determining whether the actual flow speed matches the required flow speed; If they do not match, obtaining the rotation angle of the regulating valve that controls the flow rate of the coolant; Acquiring a required angle of the regulating valve based on the speed regulation instruction; Determining whether the rotation angle matches the required angle; If the rotation angle matches the required angle, abnormal information of the coolant pipeline is obtained; If the rotation angle does not match the required angle, abnormal information of the regulating valve is obtained.

5. The temperature control method according to claim 1, characterized in that: Also includes: Before the centrifuge starts working, obtaining the ambient temperature; Obtaining the required temperature of the hydraulic oil; Acquire heating time based on the ambient temperature and the required temperature; Obtaining a preset start time of the centrifuge; Acquire a preheating start time based on the preset power-on time and the heating duration; Preheating of the hydraulic oil is started based on the preheating start time.

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