Lubricating grease detection device and method, blending system and method and wind generating set

Abstract

The invention relates to a lubricating grease detection device and method, a blending system and method and a wind generating set, the detection device comprises a detection assembly and a processor, the detection assembly comprises a shell and a sampling part arranged in the shell, and a first flow channel and a second flow channel which are communicated with an inlet are arranged in an inner cavity of the shell; the sampling part comprises a pushing part and a sensor group, and the pushing part is arranged in the second flow channel and is configured to push the lubricating grease in the first flow channel into the detection cavity of the second flow channel; the sensor group is arranged in the second flow channel and is configured to obtain the mass of first impurities in the lubricating grease in the detection cavity and the height parameter of the lubricating grease in the detection cavity; the processor is electrically connected with the sampling part, and is configured to obtain the mass fraction of the first impurity in the lubricating grease in the detection cavity according to the mass of the first impurity obtained by the sensor group and the height parameter of the lubricating grease. According to the scheme, the oil quality in the bearing can be detected on line, and real-time detection is realized.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a grease detection device and method, a grease blending system and method, and a wind power generator set. Background Art

[0002] When bearings run under heavy load for a long time, impurities such as sand, dust, and iron filings may be mixed into the grease, affecting the quality of the grease, leading to further wear of the bearing raceways and rolling elements, creating a vicious cycle and reducing the service life of the bearings.

[0003] In the prior art, the more mature centralized bearing lubrication system used in wind turbines often only injects grease into the bearings at a regular and quantitative rate, and the grease discharge end is often only equipped with a simple oil collection bottle for collecting waste oil, and the iron content in the grease is measured by offline means such as spectral analysis.

[0004] However, although offline detection has high precision and accurate results, it has disadvantages such as slow response speed, long analysis cycle, strict sampling requirements and complex detection process. It is usually only suitable for laboratory analysis and cannot perform real-time detection. Summary of the invention

[0005] The embodiments of the present application provide a grease detection device and method, a dispensing system and method, and a wind turbine generator set, which can detect the quality of oil in bearings online, realize real-time detection, and reduce the complexity of detection.

[0006] In the first aspect, according to an embodiment of the present application, a grease detection device is proposed for detecting the content of a first impurity in the grease, the detection device comprising a detection component and a processor, the detection component comprising a shell and a sampling component arranged in the shell, the shell having an inner cavity and an inlet and an outlet connected to the inner cavity, the inner cavity being provided with a first flow channel connected to the inlet and a second flow channel intersecting with the first flow channel and having a detection cavity, the sampling component comprising a pushing member and a sensor group, the pushing member being arranged in the second flow channel and configured to push the grease in the first flow channel into the detection cavity of the second flow channel, the sensor group being arranged in the second flow channel and configured to obtain the mass of the first impurity in the grease in the detection cavity and the height parameter of the grease in the detection cavity; the processor is electrically connected to the sampling component, and the processor is configured to obtain the mass fraction of the first impurity in the grease in the detection cavity according to the mass of the first impurity and the height parameter of the grease obtained by the sensor group.

[0007] According to one aspect of an embodiment of the present application, the sensor group includes a first sensor and a second sensor, the first sensor is arranged on the pushing member and is configured to obtain a height parameter of the grease in the detection chamber, and the second sensor is arranged opposite to the first sensor and is configured to obtain a mass of a first impurity in the grease in the detection chamber; the processor is configured to obtain the mass of the grease according to the height parameter of the grease, and obtain the mass fraction of the first impurity according to the mass of the grease and the mass of the first impurity.

[0008] According to one aspect of an embodiment of the present application, the sampling component includes a moving member, which is arranged at the end of the second flow channel and is located on the side of the second sensor away from the pushing member. The moving member pushes the grease on the second sensor back to the first flow channel to clear the grease in the detection cavity.

[0009] According to one aspect of an embodiment of the present application, the detection component also includes a flow meter, which is disposed in the shell and connected to the first flow channel. The flow meter is located on the side of the second flow channel close to the inlet, and the flow meter is configured to measure the flow rate of grease entering the first flow channel.

[0010] According to one aspect of the embodiment of the present application, a detection port is provided on the surface of the shell, the detection port is connected to the second flow channel, and the grease in the second flow channel is discharged through the detection port.

[0011] According to one aspect of an embodiment of the present application, the detection component also includes a locking member, which is arranged on the first flow channel and located on a side of the second flow channel close to the inlet, and the locking member is configured to control the opening and closing of the first flow channel.

[0012] According to one aspect of an embodiment of the present application, the first flow channel includes a main body and an enlarged portion, the cross-sectional size of the enlarged portion is larger than the cross-sectional size of the main body, the locking member includes a blocking portion, a spring and a coil, the coil is arranged around the first flow channel, the blocking portion is connected to the spring and is located in the first flow channel, the cross-sectional size of the blocking portion is equal to the cross-sectional size of the main body, and the coil is configured to control the movement of the blocking portion in the first flow channel.

[0013] According to one aspect of an embodiment of the present application, the detection component also includes an oil collecting piece, which is connected to the outlet and is configured to collect grease flowing through the first flow channel.

[0014] In a second aspect, a grease dispensing system for bearings is provided according to an embodiment of the present application. The dispensing system includes a detection device, a distribution component and a drive component as described above. The detection component is used to be connected to the grease discharge port of the bearing; one end of the distribution component is connected to the processor and the other end is connected to the grease injection port of the bearing, and the distribution component is configured to control the injection of grease into the bearing according to the calculation result of the processor; one end of the drive component is connected to the processor and the other end is connected to the distribution component, and the drive component is configured to provide grease to the distribution component.

[0015] According to one aspect of an embodiment of the present application, the detection device includes multiple detection components, the multiple detection components are connected one-to-one with multiple grease discharge ports, the processor includes multiple processing units that are electrically connected one-to-one with the multiple detection components, the distribution component has multiple diversion ports that are connected one-to-one with multiple grease injection ports, and each processing unit controls the corresponding diversion port to perform an action according to the calculation results.

[0016] In a third aspect, according to an embodiment of the present application, a wind turbine generator set is provided, comprising a bearing and a mixing system as described above, wherein the bearing has a grease injection port and a grease discharge port; the mixing system is connected to the grease discharge port through a detection component and to the grease injection port through a distribution component.

[0017] In a fourth aspect, a method for detecting grease is provided according to an embodiment of the present application, comprising:

[0018] Provide the detection device as described above, and connect the detection assembly to the grease discharge port of the bearing;

[0019] The first flow channel is opened, and the grease in the bearing enters the first flow channel from the grease discharge port;

[0020] Controlling the pusher to move in the second flow channel to push the grease in the first flow channel into the detection cavity of the second flow channel;

[0021] The sensor group obtains the mass of the first impurity in the grease in the detection chamber and the height parameter of the grease in the detection chamber in the second flow channel;

[0022] The processor obtains the mass fraction of the first impurity in the grease according to the data acquired by the sensor group.

[0023] In a fifth aspect, a method for preparing grease is provided according to an embodiment of the present application, comprising:

[0024] Providing a grease dispensing system as described above, connecting the detection component to the grease discharge port of the bearing and connecting the distribution component to the grease injection port of the bearing;

[0025] After the processor obtains the mass fraction of the first impurity in the grease, it compares it with the set threshold range;

[0026] When the mass fraction of the first impurity is higher than the threshold range, the first flow channel continues to be opened, the processor instructs the driving component and the distribution component to start, and the driving component inputs grease to the grease injection port through the distribution component;

[0027] When the mass fraction of the first impurity is within the threshold range, the first flow channel is blocked, the processor instructs the driving component and the dispensing component to close, and the driving component stops inputting grease to the dispensing component and the grease injection port.

[0028] According to one aspect of an embodiment of the present application, the detection device includes a plurality of detection components connected one-to-one with a plurality of grease discharge ports, the processor includes a plurality of processing units connected one-to-one with a plurality of detection components, the distribution component has a plurality of diversion ports connected one-to-one with a plurality of grease injection ports, and the deployment method includes:

[0029] When the mass fraction of the first impurities at any grease discharge port is higher than the threshold range, all the first flow channels are connected, each processing unit commands the corresponding branch port to open, and the driving component inputs grease to each grease injection port through the branch port;

[0030] When the mass fraction of the first impurities at each fat discharge port is within the threshold range, part of the first flow channel is blocked, and at the same time, some processing units command their corresponding branch ports to be closed, while other processing units continue to command their corresponding branch ports to be opened.

[0031] According to one aspect of an embodiment of the present application, the detection assembly further includes a flow meter, which is disposed in the housing and connected to the first flow channel, and the flow meter is located on a side of the second flow channel close to the inlet, and the method includes:

[0032] The processor controls the driving component to input the same flow rate of grease to the distribution component and the grease injection port according to the flow parameters obtained by the flow meter.

[0033] The embodiments of the present application provide a grease detection device and method, a dispensing system and method, and a wind turbine generator set. An electrically connected detection component and a processor are provided, and an intersecting first flow channel and a second flow channel are provided in the detection component. The discharged grease is sampled by a sampling component, and the mass fraction of the first impurity in the collected grease is measured in the detection chamber. The processor completes the calculation and processing process, so that the first impurity content in the grease can be detected during the normal grease discharge process of the bearing, thereby realizing real-time detection of the first impurity content, avoiding the process of taking out the grease separately for experimental detection, shortening the detection cycle, improving the detection efficiency, reducing the detection difficulty, facilitating online detection by staff and making timely judgments and processing, reducing damage to the bearing, gaining time for subsequent maintenance, and helping to increase the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0035] Figure 1 is a schematic structural diagram of a detection device according to an embodiment of the present application;

[0036] Figure 2 is a schematic diagram of the structure of a detection component in an embodiment of the present application;

[0037] Figure 3is a schematic diagram of the structure of another detection component in an embodiment of the present application;

[0038] Figure 4 is a structural schematic diagram of another detection component in an embodiment of the present application;

[0039] Figure 5 is a structural schematic diagram of another detection component in an embodiment of the present application;

[0040] Figure 6 is a structural schematic diagram of another detection component in an embodiment of the present application;

[0041] Figure 7 is a structural schematic diagram of a grease dispensing system according to an embodiment of the present application;

[0042] Figure 8 It is a flow chart of a detection method according to an embodiment of the present application;

[0043] Fig. 9 It is a flowchart of a preparation method according to an embodiment of the present application;

[0044] Fig.10 It is a flowchart of another preparation method of an embodiment of the present application.

[0045] Reference numerals:

[0046] 10-detection device; 11-detection component; 12-processor; 12a-processing unit;

[0047] 1-housing; 1a-inlet; 1b-outlet; 1c-detection port;

[0048] 2-sampling component; 2a-pushing member; 2b-sensor group; 21b-first sensor; 22b-second sensor; 2c-moving member;

[0049] 3-first flow channel; 3a-main body; 3b-enlarged portion;

[0050] 4-second flow channel; 4a-detection chamber; 5-flow meter;

[0051] 6-locking member; 6a-sealing part; 6b-spring; 6c-coil; 7-oil collecting member;

[0052] 100-dispensing system; 20-distribution component; 21-diversion port; 30-driving component;

[0053] 200-bearing; 201-grease discharge port; 202-grease injection port.

[0054] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0055] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0056] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the grease detection device and method, the mixing system and method, and the wind turbine generator set of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0057] At present, the rotating load-bearing components used in generator sets are increasingly valued as key components. The bearings of wind turbines are often large in size and often need to bear axial, radial loads and overturning moments. At the same time, the main bearings on the units generally have low speeds and heavy loads, and the working environment is extremely harsh and demanding. In this case, the bearings often generate a lot of heat due to the large load and friction, which will cause shutdowns when the temperature exceeds the set temperature value of the unit. In severe cases, the service life of the bearings will be greatly damaged, and even major failures will occur, leading to difficult maintenance, long shutdowns, and high maintenance costs.

[0058] Common forms of damage and failure of mechanical equipment include wear, fracture and corrosion. Practice has proved that in mechanical transmission, rolling bearings are subjected to high stress and are highly vulnerable parts. Their main failure form is wear failure. According to statistics, nearly 40% of bearing failures are caused by improper lubrication, and iron filings in grease are the main cause of wear. Long-term operation of bearings under heavy loads will cause impurities such as sand, iron filings, etc. to be mixed in the grease, affecting the grease oil quality, thereby causing further wear of the bearing raceway and rolling elements, creating a vicious cycle and reducing the service life of the bearing.

[0059] At present, the more mature centralized bearing lubrication systems used in wind turbines often only inject grease into the bearings at a regular and quantitative manner. The grease discharge end is often only equipped with a simple oil collection bottle for collecting waste oil. In this way, the lubrication pump cannot refuel according to the discharge volume, which may cause too much or too little grease in the bearing, and also cause the bearing to overheat and damage the bearing.

[0060] Therefore, online monitoring of the grease discharge of the main bearing is used to reasonably control the grease addition amount of the lubrication pump. At the same time, online detection of the iron filings content in the grease is performed, and the grease content and oil status in the bearing are controlled according to the preset alarm value. This can greatly improve the internal lubrication environment of the bearing, effectively reduce bearing damage, and increase the service life of the bearing.

[0061] In order to better understand this application, Figures 1 to 10 The grease detection device and method, the mixing system and method, and the wind turbine generator set in the embodiments of the present application are described in detail.

[0062] See also Figure 1 The embodiment of the present application proposes a grease detection device 10 for detecting the content of a first impurity in the grease. The detection device 10 includes a detection component 11 and a processor 12. The detection component 11 includes a shell 1 and a sampling component 2 arranged in the shell 1. The shell 1 has an inner cavity and an inlet 1a and an outlet 1b connected to the inner cavity. The inner cavity is provided with a first flow channel 3 connected to the inlet 1a and a second flow channel 4 intersecting with the first flow channel 3 and having a detection cavity 4a. The sampling component 2 includes a pusher 2a and a sensor group 2b. The pusher 2a is arranged in the second flow channel 4 and is configured to push the grease in the first flow channel 3 into the detection cavity 4a of the second flow channel 4. The sensor group 2b is arranged in the second flow channel 4 and is configured to obtain the mass of the first impurity in the grease in the detection cavity 4a and the height parameter of the grease in the detection cavity 4a. The processor 12 is electrically connected to the sampling component 2, and the processor 12 is configured to obtain the mass fraction of the first impurity in the grease in the detection cavity 4a according to the mass of the first impurity and the height parameter of the grease obtained by the sensor group 2b.

[0063] The detection device 10 in the embodiment of the present application can be used on the main bearing 200 in the wind turbine generator set to detect the content of the first impurity in the grease of the main bearing 200. Optionally, the first impurity is iron filings.

[0064] The detection device 10 includes a detection component 11 and a processor 12. The detection component 11 is connected to the grease discharge port 201 of the bearing 200 to detect the content of the first impurity in the grease discharged from the bearing 200. At the same time, the detection component 11 is electrically connected to the processor 12. The processor 12 calculates and processes the data measured by the detection component 11 to finally obtain the mass fraction of the first impurity.

[0065] Specifically, the shell 1 of the detection component 11 has a first flow channel 3 and a second flow channel 4 that are intersectingly arranged. The shell 1 is connected to the grease discharge port 201 of the bearing 200 through the inlet 1a, so that the grease discharged from the bearing 200 enters the first flow channel 3 and the second flow channel 4 through the inlet 1a of the shell 1.

[0066] Optionally, when the grease flows horizontally in the first flow channel 3, after passing through the second flow channel 4, the sampling component 2 in the second flow channel 4 can sample in the first flow channel 3, so that part of the sampled grease enters the detection chamber 4a of the second flow channel 4 for detection.

[0067] The sampling component 2 includes a pushing member 2a and a sensor group 2b. Optionally, the pushing member 2a is an electric piston. The above sampling process is that when the grease flows in the first flow channel 3, after flowing to the second flow channel 4, the pushing member 2a in the second flow channel 4 can move up and down, and push part of the grease in the first flow channel 3 into the detection cavity 4a in the second flow channel 4. The sensor group 2b performs parameter detection on this part of the grease. After obtaining the specific parameters, they are transmitted to the processor 12 for calculation, and finally the mass fraction of the first impurity is obtained.

[0068] Optionally, when the second flow channel 4 is a cylindrical structure, the detection cavity 4a is a cylinder. At this time, the mass m of the grease entering the detection cavity 4a is 脂 for:

[0069] m 脂 =πR 2 hρ;

[0070] Among them, m 脂 The mass of the grease sent for detection this time, R is the radius of the detection chamber 4a, ρ is the density of the grease, h is the height of the grease in the detection chamber 4a, and the h value can be measured by the sensor group 2b.

[0071] Optionally, the height h of the grease in the detection cavity 4a may be:

[0072] h=h 总 -h 移 ;

[0073] Among them, h 总 h is the distance from the pusher 2a to the bottom of the detection cavity 4a, 移 is the moving distance of the pushing member 2a in the second flow channel 4.

[0074] Then, the sensor group 2b can also obtain the mass of the first impurity of the grease in the detection chamber 4a. Optionally, when the first impurity is iron filings, its mass m 杂 for:

[0075] m杂 =ηPQ;

[0076] Among them, η is the content coefficient, which is a constant. The sensor group 2b can detect the PQ index in the grease, and the index has a good linear relationship with the iron content and the particle size.

[0077] Finally, the processor 12 can calculate the mass fraction α of the first impurity in the grease. 杂 for:

[0078] α 杂 =m 杂 / m 脂 .

[0079] A grease detection device 10 provided in an embodiment of the present application is provided with an electrically connected detection component 11 and a processor 12, an intersecting first flow channel 3 and a second flow channel 4 are provided in the detection component 11, the discharged grease is sampled by a sampling component 2, the mass fraction of the first impurity in the collected grease is measured in the detection chamber 4a, and the processor 12 completes the calculation and processing process, so that the first impurity content in the grease can be detected during the normal operation and grease discharge of the bearing 200, thereby realizing real-time detection of the first impurity content, avoiding the process of taking out the grease separately for experimental detection, shortening the detection cycle, improving the detection efficiency, reducing the detection difficulty, facilitating online detection by staff and making timely judgments and processing, reducing damage to the bearing 200, gaining time for subsequent maintenance, and helping to increase the service life of the bearing 200.

[0080] As an optional embodiment, please continue to refer to Figure 1 The sensor group 2b includes a first sensor 21b and a second sensor 22b. The first sensor 21b is arranged on the pushing member 2a and is configured to obtain the height parameter of the grease in the detection chamber 4a. The second sensor 22b is arranged opposite to the first sensor 21b and is configured to obtain the mass of the first impurity in the grease in the detection chamber 4a. The processor 12 is configured to obtain the mass of the grease according to the height parameter of the grease, and obtain the mass fraction of the first impurity according to the mass of the grease and the mass of the first impurity.

[0081] Optionally, the first sensor 21b is used to detect the height parameters of grease in the detection chamber 4a. The first sensor 21b is a distance sensor and is arranged on the pushing member 2a. When the first impurity is iron filings, the second sensor 22b can be a ferromagnetic sensor. The second sensor 22b is arranged opposite to the first sensor 21b in the second flow channel 4, and the second sensor 22b is located in the detection chamber 4a.

[0082] When the detection process is carried out, the pushing member 2a drives the first sensor 21b to move in the second flow channel 4, and squeezes part of the grease in the first flow channel 3 into the detection chamber 4a, so that the grease covers the second sensor 22b. Therefore, the first sensor 21b can measure the height parameters of the grease in the detection chamber 4a and the second sensor 22b can detect the mass of the first impurity in the grease.

[0083] After obtaining the above parameters, the data is transmitted to the processor 12 , and the mass fraction of the first impurity is calculated according to the above set formula, thereby realizing the detection of the internal grease during the operation of the bearing 200 .

[0084] A grease detection device 10 provided in an embodiment of the present application completes the acquisition of parameters of the grease in the detection chamber 4a by setting a first sensor 21b and a second sensor 22b in the second flow channel 4, and finally completes the detection process of the first impurity content, thereby realizing online detection of the grease.

[0085] As an alternative embodiment, see Figure 2 The sampling component 2 includes a moving member 2c, which is arranged at the end of the second flow channel 4 and is located on the side of the second sensor 22b away from the pushing member 2a. The moving member 2c pushes the grease on the second sensor 22b back to the first flow channel 3 to clear the grease in the detection cavity 4a.

[0086] Optionally, the moving member 2c may be an electric piston, and the moving member 2c is disposed at the end of the second flow channel 4 and located in the detection chamber 4a, and the moving member 2c can move up and down in the detection chamber 4a.

[0087] The purpose of setting the moving part 2c in this embodiment is to utilize the up and down movement of the moving part 2c to push the grease in the detection chamber 4a after detection back to the first flow channel 3 and discharge it in the first flow channel 3, so as to facilitate subsequent sampling of the grease in the first flow channel 3.

[0088] A grease detection device 10 provided in an embodiment of the present application, by setting a movable part 2c in the second flow channel 4, can push the grease from the detection chamber 4a back to the first flow channel 3 after each detection, thereby avoiding the residual grease in the detection chamber 4a, which is conducive to completing multiple sampling processes, and also prevents the residual grease from the last time from affecting the next detection result, thereby improving the accuracy of grease detection, reducing test errors, and facilitating staff to make better judgments.

[0089] As an alternative embodiment, see Figure 3The detection component 11 also includes a flow meter 5, which is arranged in the housing 1 and connected to the first flow channel 3. The flow meter 5 is located on the side of the second flow channel 4 close to the inlet 1a. The flow meter 5 is configured to measure the flow rate of grease entering the first flow channel 3.

[0090] Optionally, a flow meter 5 is disposed at the inlet 1 a of the first flow channel 3 , and its function is to detect the flow rate of grease entering the first flow channel 3 .

[0091] Therefore, it can be known that the staff can know the flow rate of grease discharged from the bearing 200 through the flowmeter 5, and thus control the injection of the same flow rate of grease into the bearing 200 to avoid too much or too little grease in the bearing 200, so that the total amount of grease inside the bearing 200 is in a state of dynamic balance, thereby ensuring the circulation of grease in the bearing 200.

[0092] A grease detection device 10 provided in an embodiment of the present application detects the grease flow entering the first flow channel 3 by setting a flow meter 5 at the inlet 1a of the first flow channel 3, which makes it easy to understand the amount of grease discharged from the bearing 200 and control the amount of grease injected into the bearing 200, which is beneficial to achieve the total amount of grease in the bearing 200 The balance completes the grease replacement in the bearing 200.

[0093] As an alternative embodiment, see Figure 4 A detection port 1c is provided on the surface of the housing 1, and the detection port 1c is communicated with the second flow channel 4, and the grease in the second flow channel 4 is discharged through the detection port 1c.

[0094] The purpose of setting the detection port 1c at the second flow channel 4 in this embodiment is to use the detection port 1c to take out part of the grease in the detection chamber 4a and conduct external experimental testing on it. The data obtained by the laboratory test can be compared with the data obtained by the above-mentioned online test, so as to judge the accuracy of the online test and facilitate adjustment.

[0095] At the same time, the detection port 1c can also facilitate the removal of residual grease in the detection cavity 4a, and properly clean the detection cavity 4a to prevent the residual grease from affecting the next detection.

[0096] A grease detection device 10 provided in an embodiment of the present application has a detection port 1c set at the second flow channel 4, so that the grease in the detection chamber 4a can be easily taken out. After conducting external experiments, more accurate detection results can be further obtained, which is convenient for staff to judge the contamination status of the grease.

[0097] As an alternative embodiment, see Figure 5The detection component 11 also includes a locking member 6 , which is arranged on the first flow channel 3 and located on a side of the second flow channel 4 close to the inlet 1 a . The locking member 6 is configured to control the opening and closing of the first flow channel 3 .

[0098] The locking member 6 is arranged on the first flow channel 3, thereby realizing the opening or closing of the first flow channel 3. This is because during the grease discharge process of the bearing 200, some grease discharge ports 201 can discharge grease normally, and the first flow channel 3 can also be selectively closed by the locking member 6, so that the grease discharge ports 201 are no longer discharged.

[0099] When the locking piece 6 is opened, the first flow channel 3 is connected, the grease enters the first flow channel 3 and the sampling and testing process can be carried out; when the locking piece 6 is closed, the first flow channel 3 is blocked, the grease cannot be discharged through the first flow channel 3, and the grease sampling cannot be tested at this time.

[0100] A grease detection device 10 provided in an embodiment of the present application provides a locking member 6 on the first flow channel 3 so that the first flow channel 3 has two states of opening and closing, thereby determining whether the first flow channel 3 is open or blocked. This device has better flexibility and is convenient for staff to perform detection according to actual conditions.

[0101] As an optional embodiment, please continue to refer to Figure 5 The first flow channel 3 includes a main body 3a and an enlarged portion 3b, the cross-sectional size of the enlarged portion 3b is larger than the cross-sectional size of the main body 3a, the locking member 6 includes a blocking portion 6a, a spring 6b and a coil 6c, the coil 6c is arranged around the first flow channel 3, the blocking portion 6a is connected to the spring 6b and is located in the first flow channel 3, the cross-sectional size of the blocking portion 6a is equal to the cross-sectional size of the main body 3a, and the coil 6c is configured to control the movement of the blocking portion 6a in the first flow channel 3.

[0102] Optionally, the locking member 6 can be an electromagnetic valve, specifically composed of a sealing part 6a, a spring 6b and a coil 6c. The sealing part 6a can adopt a spherical structure. The position of the sealing part 6a in the first flow channel 3 is determined according to whether the coil 6c is energized, and the sealing part 6a can move in the first flow channel 3.

[0103] The structure of the first flow channel 3 includes a main body portion 3a and an enlarged portion 3b, wherein the enlarged portion 3b has a wider cross-section than the main body portion 3a, so as to be able to form an adaptive fit with the locking member 6, wherein the blocking portion 6a has the same cross-section as the main body portion 3a, and the blocking portion 6a can be better snapped into the main body portion 3a, thereby achieving blocking of the first flow channel 3.

[0104] Specifically, when it is necessary to block the first flow channel 3, the control coil 6c is energized, causing the blocking portion 6a to move toward the main body portion 3a in the first flow channel 3. After moving to the main body portion 3a, it engages with the main body portion 3a, causing the first flow channel 3 to be blocked, thereby achieving the closure of the first flow channel 3, and preventing the grease from continuing to flow in the first flow channel 3.

[0105] When the first flow channel 3 needs to be turned on, the control coil 6c is de-energized, so that the blocking portion 6a moves toward the enlarged portion 3b in the first flow channel 3. After moving to the enlarged portion 3b, it is separated from the main portion 3a. Since the cross-section of the enlarged portion 3b is wider than the blocking portion 6a, the grease in the first flow channel 3 continues to flow at the enlarged portion 3b, so that the first flow channel 3 is turned on, and the blocking portion 6a can be suspended in the grease of the enlarged portion 3b.

[0106] A grease detection device 10 provided in an embodiment of the present application provides a specific structural form of a locking member 6 and a structural form of a first flow channel 3 cooperating therewith. Through the above-mentioned matching relationship, the opening and closing of the first flow channel 3 is realized, which facilitates better control of the grease discharge of the bearing 200 and has better flexibility.

[0107] As an alternative embodiment, see Figure 6 The detection assembly 11 further includes an oil collecting member 7 , which is connected to the outlet 1 b and is configured to collect the grease flowing through the first flow channel 3 .

[0108] Optionally, the oil collecting member 7 may be an oil collecting bottle, which may be threadably connected to the outlet 1b of the housing 1. The oil collecting member 7 is mainly used to collect the grease discharged from the first flow channel 3. After collection, the grease may be purified to achieve recycling of the grease.

[0109] A grease detection device 10 provided in an embodiment of the present application collects discharged grease by providing an oil collecting member 7 at the outlet 1b of the housing 1, thereby avoiding waste of grease, achieving repeated recycling of the grease, and saving application costs.

[0110] See also Figure 7 , an embodiment of the present application provides a grease dispensing system 100 for a bearing 200, the dispensing system 100 includes the detection device 10, the distribution component 20 and the driving component 30 as described above, the detection component 11 is used to connect with the grease discharge port 201 of the bearing 200; one end of the distribution component 20 is connected to the processor 12 and is connected to the grease injection port 202 of the bearing 200 through the other end, the distribution component 20 is configured to control the injection of grease into the bearing 200 according to the calculation result of the processor 12; one end of the driving component 30 is connected to the processor 12 and the other end is connected to the distribution component 20, and the driving component 30 is configured to provide grease to the distribution component 20.

[0111] In this embodiment, a distribution component 20 and a driving component 30 are added to the above-mentioned detection device 10 to form a grease mixing system 100 .

[0112] The specific structure is that the detection component 11 in the detection device 10 is connected to the grease discharge port 201 of the bearing 200, and a threaded connection can be formed with the grease discharge port 201 through the inlet 1a of the shell 1. The detection component 11 is electrically connected to the processor 12, and the processor 12 is electrically connected to the additional distribution component 20 and the driving component 30 respectively. The processor 12 can control the operation of the distribution component 20 and the driving component 30 respectively according to the detection result of the grease. The driving component 30 is connected to the distribution component 20, and the driving component 30 can provide grease to the distribution component 20. The distribution component 20 is connected to the grease injection port 202 of the bearing 200, and its function is to provide new grease to the bearing 200.

[0113] Optionally, the processor 12 may be a PLC control mechanism, the dispensing component 20 may be a multi-channel distributor, and the driving component 30 may be a lubrication pump capable of providing power for the flow of grease.

[0114] Among them, the detection component 11 is connected to the processor 12 through a signal line, and the detection component 11 transmits the acquired basic parameters to the processor 12 for calculation; the processor 12 is connected to the distribution component 20 and the driving component 30 respectively through control lines, and the processor 12 controls the distribution component 20 and the driving component 30 to perform corresponding actions according to the calculation and comparison results of the numerical values; the driving component 30 and the distribution component 20 and the distribution component 20 and the grease injection port 202 are connected through oil pipes, so that the driving component 30 can provide grease to the distribution component 20, and the distribution component 20 injects grease into the grease injection port 202 at the same time.

[0115] A grease mixing system 100 provided in an embodiment of the present application is formed by adding a distribution component 20 and a drive component 30 on the basis of a detection device 10, so that on the basis of a first impurity content detection of the grease, the distribution component 20 and the drive component 30 can be controlled according to the calculation result to execute corresponding commands, so as to inject grease into the bearing 200, and replace the grease inside the bearing 200 in a more targeted manner, thereby ensuring the cleanliness requirements of the grease, making the circulation process of the grease have a data basis, accurately realizing the mixing of the grease, and finally making the bearing 200 have an operating environment that meets the cleanliness standards.

[0116] As an optional embodiment, please continue to refer to Figure 7The detection device 10 includes multiple detection components 11, and the multiple detection components 11 are connected one-to-one with multiple grease discharge ports 201. The processor 12 includes multiple processing units 12a that are electrically connected one-to-one with the multiple detection components 11. The distribution component 20 has multiple diversion ports 21 that are connected one-to-one with multiple grease injection ports 202. Each processing unit 12a controls the corresponding diversion port 21 to perform an action according to the calculation result.

[0117] As is known to all, the bearing 200 has multiple grease injection ports 202 and grease discharge ports 201 which are arranged at intervals from each other. Therefore, it is necessary to set multiple detection components 11 and respectively connect them to the respective grease discharge ports 201. At the same time, each detection component 11 is electrically connected to the corresponding processing unit 12a to realize separate detection and calculation of the grease at each grease discharge port 201 to obtain the first impurity content of the grease at different positions in the bearing 200.

[0118] At the same time, the distribution component 20 has a diversion port 21 connected one-to-one with the grease injection port 202. Each processing unit 12a can control the corresponding diversion port 21 to inject grease into its own grease injection port 202 according to the calculation results obtained respectively, so as to achieve precise injection of grease into the bearing 200, which is mainly reflected in the different opening and closing states of each diversion port 21 and the different flow rates during injection.

[0119] A grease mixing system 100 provided in an embodiment of the present application, by setting the same number of detection components 11 and diversion ports 21 as the grease injection port 202 and the grease discharge port 201 of the bearing 200, so that they are connected one-to-one, achieves accurate mixing of grease at different positions, and replaces grease at different positions more specifically, making the mixing process more uniform, avoiding local mixing, and causing the internal grease to not meet the cleanliness requirements as a whole.

[0120] An embodiment of the present application provides a wind turbine generator set, including a bearing 200 and the mixing system 100 as described above, wherein the bearing 200 has a grease injection port 202 and a grease discharge port 201; the mixing system 100 is connected to the grease discharge port 201 through a detection component 11 and is connected to the grease injection port 202 through a distribution component 20.

[0121] See also Figure 8 , the present application embodiment provides a grease detection method, comprising:

[0122] S1. Provide the detection device 10 as described above, and connect the detection component 11 to the grease discharge port 201 of the bearing 200;

[0123] S2, the first flow channel 3 is opened, and the grease in the bearing 200 enters the first flow channel 3 through the grease discharge port 201;

[0124] S3, controlling the pusher 2a to move in the second flow channel 4 to push the grease in the first flow channel 3 into the detection cavity 4a of the second flow channel 4;

[0125] S4, the sensor group 2b obtains the mass of the first impurity in the grease in the detection chamber 4a and the height parameter of the grease in the detection chamber 4a in the second flow channel 4;

[0126] S5. The processor 12 obtains the mass fraction of the first impurity in the grease according to the data acquired by the sensor group 2b.

[0127] In step S1 , the detection component 11 may be connected to the grease discharge port 201 of the bearing 200 through the thread at the inlet 1 a of the housing 1 , and the grease discharge port 201 is now in communication with the first flow channel 3 in the housing 1 .

[0128] When the bearing 200 is in normal operation, considering the cleanliness requirement of the grease, the grease inside it needs to be in a cyclic replacement state, that is, the grease is continuously injected through the grease injection port 202 and the grease is continuously discharged through the grease discharge port 201. In step S2, the grease discharged from the working bearing 200 is made to flow into the first flow channel 3, so as to perform the subsequent detection process.

[0129] During steps S3-S5, the mass fraction of the first impurity in the sampled grease can be finally obtained by referring to the above description of the detection process and the formula analysis.

[0130] See also Fig. 9 The present application provides a method for preparing grease, comprising:

[0131] S11, providing the grease dispensing system 100 as described above, connecting the detection component 11 to the grease discharge port 201 of the bearing 200 and connecting the distribution component 20 to the grease injection port 202 of the bearing 200;

[0132] S12, after the processor 12 obtains the mass fraction of the first impurity in the grease, it compares it with a set threshold range;

[0133] S13, when the mass fraction of the first impurity is higher than the threshold range, the first flow channel 3 continues to be opened, the processor 12 instructs the driving component 30 and the distribution component 20 to start, and the driving component 30 inputs grease to the grease injection port 202 through the distribution component 20;

[0134] S14. When the mass fraction of the first impurity is within the threshold range, the first flow channel 3 is blocked, the processor 12 commands the driving component 30 and the distributing component 20 to be closed, and the driving component 30 stops inputting grease to the distributing component 20 and the grease injection port 202.

[0135] Since there are certain requirements for the cleanliness of the grease in the bearing 200 , a threshold range of the first impurity content is set in the processor 12 so that the content of the first impurity in the grease is always within the threshold range, thereby avoiding wear of the bearing 200 .

[0136] Therefore, in step S12, after the mass fraction of the first impurity in the grease is calculated, it is compared with the set threshold range. When the calculated result is higher than the threshold range, it means that the first impurity content in the grease exceeds the standard, and the grease inside the bearing 200 needs to be replaced. The first flow channel 3 continues to guide the discharged grease, and the processor 12 controls the distribution component 20 and the drive component 30 to work, and continuously injects grease into the grease injection port 202. While completing the continuous replacement, it ensures that the total amount of grease inside remains unchanged to avoid too much or too little grease.

[0137] When the calculation result is within the threshold range, it indicates that the internal grease meets the cleanliness requirements and its replacement frequency can be appropriately reduced. Optionally, the first flow channel 3 is blocked by the locking member 6 so that the grease will not be discharged in the first flow channel 3. At the same time, the processor 12 can command the distribution component 20 and the drive component 30 to close and stop filling the grease port 202 to avoid excessive internal grease, thereby reducing the replacement frequency of the grease.

[0138] By setting the threshold range and comparing it with the calculation results, the processor 12 can control the preparation of the grease more based on evidence. While achieving grease replacement and meeting cleanliness requirements, it can also appropriately reduce the replacement frequency to adapt to different replacement requirements.

[0139] As an alternative embodiment, see Fig.10 The detection device 10 includes a plurality of detection components 11 connected one-to-one with a plurality of grease discharge ports 201, the processor 12 includes a plurality of processing units 12a connected one-to-one with a plurality of detection components 11, the distribution component 20 has a plurality of diversion ports 21 connected one-to-one with a plurality of grease injection ports 202, and the deployment method includes:

[0140] S121, when the mass fraction of the first impurity at any grease discharge port 201 is higher than the threshold range, all the first flow channels 3 are turned on, each processing unit 12a commands the corresponding flow diversion port 21 to be opened, and the driving component 30 inputs grease to each grease injection port 202 through the flow diversion port 21;

[0141] S122. When the mass fraction of the first impurity at each fat discharge port 201 is within the threshold range, the blocking portion 6a divides the first flow channel 3, and at the same time, some processing units 12a command their corresponding branch ports 21 to close, while other processing units 12a continue to command their corresponding branch ports 21 to open.

[0142] In step S121, the calculated results measured at each grease discharge port 201 are transmitted to the corresponding processing unit 12a and compared with the set threshold range. When the first impurity content in any one place is higher than the threshold range, it means that the internal grease does not meet the cleanliness requirement locally, and the first flow channel 3 connected to each grease discharge port 201 needs to be turned on to continue to discharge the grease. At the same time, the processor 12 controls the driving component 30 and the distribution component 20 to continuously inject grease into the grease injection port 202, ensuring that the total amount inside remains unchanged while replacing. In this way, while the bearing 200 is working, the internal grease continues to circulate and meets the cleanliness requirement.

[0143] In step S122, when the calculation results detected at all the grease discharge ports 201 are within the threshold range, it means that the internal grease as a whole has reached the cleanliness requirement. At this time, the frequency of grease replacement can be appropriately reduced. Therefore, the first flow channel 3 of the sealing portion 6a can be selectively blocked to prevent the grease from being discharged. At the same time, the processor 12 correspondingly closes part of the diversion ports 21 to prevent the interior from being filled with oil, thereby avoiding excessive internal grease.

[0144] It should be noted that, considering the cleanliness requirements of the grease, it is necessary to keep another part of the first flow channel 3 open and another part of the diversion port 21 filled with oil, so that the grease can still be kept in a state of circulation and replacement. Optionally, in step S122, one third of the total number of grease discharge ports 201 can be blocked to close the first flow channel 3, and at the same time, the processing unit 12a controls to close one third of the total number of diversion ports 21.

[0145] As an optional embodiment, the detection assembly 11 further includes a flow meter 5, which is disposed in the housing 1 and connected to the first flow channel 3, and the flow meter 5 is located on a side of the second flow channel 4 close to the inlet 1a. The method includes:

[0146] The processor 12 controls the driving component 30 to input the same flow rate of grease to the distribution component 20 and the grease injection port 202 according to the flow rate parameters obtained by the flow meter 5 .

[0147] The control of the driving component 30 and the distribution component 20 by the processor 12 depends not only on the comparison between the first impurity content and the threshold range, but also on the measurement of the grease discharge amount by the flow meter 5 in this embodiment. After measuring the grease flow in the first flow channel 3, the flow meter 5 transmits the data to the processor 12. The processor 12 controls the operation of the driving component 30 and the distribution component 20 according to the flow parameters.

[0148] Taking into account that grease is discharged from multiple grease discharge ports 201 when the bearing 200 is working, the total grease discharge amount is measured by the flowmeter 5 at this time, so that the processor 12 controls the driving component 30 and the distribution component 20 to inject the same flow of grease into the grease injection port 202, thereby ensuring that the total amount of grease in the bearing 200 remains unchanged after replacement, avoiding the situation of too much or too little grease, and at the same time making the grease meet the cleanliness standard, also making the bearing 200 in the best working condition.

[0149] The embodiments of the present application provide a grease detection device and method, a dispensing system and method, and a wind turbine generator set. An electrically connected detection component and a processor are provided, and an intersecting first flow channel and a second flow channel are provided in the detection component. The discharged grease is sampled by a sampling component, and the mass fraction of the first impurity in the collected grease is measured in the detection chamber. The processor completes the calculation and processing process, so that the first impurity content in the grease can be detected during the normal grease discharge process of the bearing, thereby realizing real-time detection of the first impurity content, avoiding the process of taking out the grease separately for experimental detection, shortening the detection cycle, improving the detection efficiency, reducing the detection difficulty, facilitating online detection by staff and making timely judgments and processing, reducing damage to the bearing, gaining time for subsequent maintenance, and helping to increase the service life of the bearing.

[0150] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A grease detection device (10) for detecting the content of a first impurity in grease, characterized in that: The detection device (10) comprises: A detection component (11) comprises a housing (1) and a sampling component (2) arranged in the housing (1), wherein the housing (1) has an inner cavity and an inlet (1a) and an outlet (1b) connected to the inner cavity, wherein the inner cavity is provided with a first flow channel (3) connected to the inlet (1a) and a second flow channel (4) intersecting with the first flow channel (3) and having a detection cavity (4a), wherein the sampling component (2) comprises a pusher (2a) and a sensor group (2b), wherein the pusher (2a) is arranged in the second flow channel (4) and is configured to push the grease in the first flow channel (3) into the detection cavity (4a) of the second flow channel (4), and wherein the sensor group (2b) is arranged in the second flow channel (4) and is configured to obtain the mass of the first impurity in the grease in the detection cavity (4a) and the height parameter of the grease in the detection cavity (4a); A processor (12) is electrically connected to the sampling component (2), and the processor (12) is configured to obtain a mass fraction of the first impurity in the grease in the detection chamber (4a) based on the mass of the first impurity obtained by the sensor group (2b) and the height parameter of the grease.

2. The detection device (10) according to claim 1, characterized in that: The sensor group (2b) comprises a first sensor (21b) and a second sensor (22b), wherein the first sensor (21b) is arranged on the pushing member (2a) and is configured to obtain a height parameter of the lubricating grease in the detection chamber (4a), and the second sensor (22b) is arranged opposite to the first sensor (21b) and is configured to obtain a mass of the first impurity in the lubricating grease in the detection chamber (4a); The processor (12) is configured to obtain the mass of the grease according to the height parameter of the grease, and to obtain the mass fraction of the first impurity according to the mass of the grease and the mass of the first impurity.

3. The detection device (10) according to claim 2, characterized in that: The sampling component (2) comprises a moving member (2c), which is arranged at the end of the second flow channel (4) and located on the side of the second sensor (22b) away from the pushing member (2a), and the moving member (2c) pushes the grease on the second sensor (22b) back into the first flow channel (3) to clear the grease in the detection chamber (4a).

4. The detection device (10) according to claim 1, characterized in that: The detection component (11) also includes a flow meter (5), which is arranged in the housing (1) and connected to the first flow channel (3), and the flow meter (5) is located on a side of the second flow channel (4) close to the inlet (1a), and the flow meter (5) is configured to measure the flow rate of the grease entering the first flow channel (3).

5. The detection device (10) according to claim 1, characterized in that: The surface of the housing (1) is provided with a detection port (1c), the detection port (1c) is in communication with the second flow channel (4), and the grease in the second flow channel (4) is discharged through the detection port (1c).

6. The detection device (10) according to claim 1, characterized in that: The detection component (11) further comprises a locking member (6), wherein the locking member (6) is arranged on the first flow channel (3) and is located on a side of the second flow channel (4) close to the inlet (1a), and the locking member (6) is configured to control the opening and closing of the first flow channel (3).

7. The detection device (10) according to claim 6, characterized in that: The first flow channel (3) comprises a main body (3a) and an enlarged portion (3b), the cross-sectional dimension of the enlarged portion (3b) being greater than the cross-sectional dimension of the main body (3a), the locking member (6) comprises a blocking portion (6a), a spring (6b) and a coil (6c), the coil (6c) being arranged around the first flow channel (3), the blocking portion (6a) being connected to the spring (6b) and being located in the first flow channel (3), the cross-sectional dimension of the blocking portion (6a) being equal to the cross-sectional dimension of the main body (3a), and the coil (6c) being configured to control the movement of the blocking portion (6a) in the first flow channel (3).

8. The detection device (10) according to claim 1, characterized in that: The detection assembly (11) further comprises an oil collecting member (7), wherein the oil collecting member (7) is connected to the outlet (1b), and the oil collecting member (7) is configured to collect the grease flowing through the first flow channel (3).

9. A grease dispensing system (100) for a bearing (200), characterized in that: include: The detection device (10) according to any one of claims 1 to 8, wherein the detection component (11) is used to connect to the grease discharge port (201) of the bearing (200); a distribution component (20), one end of the distribution component (20) being connected to the processor (12) and the other end of the distribution component (20) being connected to a grease injection port (202) of the bearing (200), the distribution component (20) being configured to control the injection of grease into the bearing (200) according to a calculation result of the processor (12); A driving component (30) having one end connected to the processor (12) and the other end connected to the dispensing component (20), wherein the driving component (30) is configured to provide the grease to the dispensing component (20).

10. The mixing system (100) according to claim 9, characterized in that: The detection device (10) comprises a plurality of detection components (11), the plurality of detection components (11) are connected one-to-one with the plurality of grease discharge ports (201), the processor (12) comprises a plurality of processing units (12a) are electrically connected one-to-one with the plurality of detection components (11), the distribution component (20) has a plurality of diversion ports (21) are connected one-to-one with the plurality of grease injection ports (202), and each of the processing units (12a) controls the corresponding diversion port (21) to perform an action according to a calculation result.

11. A wind turbine generator set, characterized in that: include: The bearing (200) has a grease injection port (202) and a grease discharge port (201); According to the mixing system (100) according to any one of claims 9 to 10, the mixing system (100) is connected to the grease discharge port (201) through the detection component (11) and is connected to the grease injection port (202) through the distribution component (20).

12. A method for detecting grease, characterized in that: The method comprises: Providing a detection device (10) according to any one of claims 1 to 8, and connecting the detection component (11) to a grease discharge port (201) of a bearing (200); The first flow channel (3) is opened, and the grease in the bearing (200) enters the first flow channel (3) through the grease discharge port (201); Controlling the pushing member (2a) to move in the second flow channel (4) to push the grease in the first flow channel (3) into the detection cavity (4a) of the second flow channel (4); The sensor group (2b) acquires, in the second flow channel (4), the mass of the first impurity in the lubricating grease in the detection chamber (4a) and the height parameter of the lubricating grease in the detection chamber (4a); The processor (12) obtains the mass fraction of the first impurity in the grease based on the data acquired by the sensor group (2b).

13. A method for preparing grease, characterized in that: The method comprises: A grease dispensing system (100) according to any one of claims 9 to 10 is provided, wherein the detection component (11) is connected to a grease discharge port (201) of a bearing (200) and the distribution component (20) is connected to a grease injection port (202) of the bearing (200); After the processor (12) obtains the mass fraction of the first impurity in the grease, it compares it with a set threshold range; When the mass fraction of the first impurity is higher than the threshold range, the first flow channel (3) continues to be opened, the processor (12) commands the driving component (30) and the distribution component (20) to start, and the driving component (30) inputs the grease into the grease injection port (202) through the distribution component (20); When the mass fraction of the first impurity is within the threshold range, the first flow channel (3) is blocked, the processor (12) commands the driving component (30) and the distribution component (20) to be closed, and the driving component (30) stops inputting the grease into the distribution component (20) and the grease injection port (202).

14. The preparation method according to claim 13, characterized in that: The detection device (10) comprises a plurality of detection components (11) connected one-to-one with a plurality of grease discharge ports (201); the processor (12) comprises a plurality of processing units (12a) connected one-to-one with a plurality of detection components (11); the distribution component (20) comprises a plurality of flow diversion ports (21) connected one-to-one with a plurality of grease injection ports (202); and the mixing method comprises: When the mass fraction of the first impurities at any of the grease discharge ports (201) is higher than the threshold range, all of the first flow channels (3) are connected, each of the processing units (12a) commands the corresponding flow diversion ports (21) to open, and the driving component (30) inputs the grease into each of the grease injection ports (202) through the flow diversion ports (21); When the mass fraction of the first impurity at each of the fat discharge ports (201) is within the threshold range, the blocking portion (6a) divides the first flow channel (3), and at the same time, a portion of the processing units (12a) command the corresponding diversion ports (21) to close, while another portion of the processing units (12a) continue to command the corresponding diversion ports (21) to open.

15. The preparation method according to claim 13, characterized in that: The detection assembly (11) further comprises a flow meter (5), the flow meter (5) being arranged in the housing (1) and connected to the first flow channel (3), the flow meter (5) being located on a side of the second flow channel (4) close to the inlet (1a), and the method comprising: The processor (12) controls the driving component (30) to input the same flow rate of the grease into the distribution component (20) and the grease injection port (202) based on the flow rate parameters obtained by the flow meter (5).

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