A method, system and device for detecting fracture of a rotating shaft of a furnace refiner

Abstract

The present application relates to a method, system, and device for detecting a broken shaft of a furnace refiner, belonging to the technical field of furnace refiners. The detection method comprises: obtaining the real-time volume of a pre-filled powder in the shaft when the shaft is in operation, wherein a filling cavity is provided inside the shaft, and the powder is filled in the filling cavity; determining whether the real-time volume is less than the initial volume; and if so, sending an alarm message. Since the shaft is pre-filled with powder, the volume of the powder filled in the shaft remains unchanged when the shaft is intact. When the shaft breaks, the filled powder will leak, resulting in a decrease in volume. Therefore, it is only necessary to determine whether the real-time volume of the powder filled in the shaft is less than the initial volume. When the real-time volume is less than the initial volume, an alarm message is sent to remind the staff that the shaft has broken.

Description

Technical Field

[0001] The present application relates to the technical field of furnace refiners, and in particular to a method, system and device for detecting fracture of a rotating shaft of a furnace refiner. Background Art

[0002] The furnace refiner not only needs to complete the material processing task efficiently, but also needs to ensure long-term stable operation. Although most refiners on the market can meet the basic physical and chemical reaction requirements, they have major shortcomings in equipment safety and fault warning. At present, the principle of the furnace refiner is to use a motor to drive the shaft to rotate. The end of the shaft that extends into the furnace is coaxially fixed with a rotor; aluminum powder is introduced into the shaft, and gas is introduced, so that the rotor sprays the aluminum powder into the furnace. However, during the use of the refiner, the shaft is prone to breakage due to the eccentric force. Since the shaft and rotor are both located in the furnace, it is difficult for the staff to detect it in time, which affects the material processing effect of the refiner. Summary of the Invention

[0003] In order to enable staff to detect shaft fracture in a timely manner, the present application provides a method, system and device for detecting shaft fracture of a furnace refiner.

[0004] In a first aspect, the present application provides a method for detecting fracture of a shaft of a furnace refiner, which adopts the following technical solution:

[0005] A method for detecting fracture of a shaft of a furnace refiner, comprising:

[0006] When the rotating shaft is working, the real-time volume of the powder pre-filled in the rotating shaft is obtained, and a filling cavity is provided inside the rotating shaft, and the powder is filled in the filling cavity;

[0007] Determining whether the real-time volume is smaller than the initial volume;

[0008] If so, an alarm message is sent.

[0009] By adopting the above technical solution, since the shaft is pre-filled with powder, when the shaft is intact, the volume of the powder filled in the shaft remains unchanged. When the shaft breaks, the filled powder will leak, resulting in a decrease in volume. Therefore, it is only necessary to determine whether the real-time volume of the powder filled in the shaft is less than the initial volume. When the real-time volume is less than the initial volume, an alarm message is sent to remind the staff that the shaft is broken.

[0010] Optionally, after sending the alarm information, the following steps are included:

[0011] driving a detection ring preset in the rotating shaft to move axially along the rotating shaft;

[0012] Acquiring the detection displacement of the detection ring in real time;

[0013] Obtaining a detection pressure value of the detection ring exerted by the inner wall of the rotating shaft;

[0014] The fracture position of the rotating shaft is determined according to the change of the detection pressure value.

[0015] By adopting the above technical solution, the detection pressure values ​​of the detection ring on the inner wall of the shaft are necessarily different when the shaft is intact and after the shaft is broken. Therefore, the broken position of the shaft can be quickly determined based on the change of the detection pressure value.

[0016] Optionally, the step of obtaining a detection pressure value of the detection ring exerted by the inner wall of the rotating shaft includes:

[0017] The detection pressure value of each pressure detection point uniformly arranged in advance on the detection ring is obtained, which is subjected to the inner wall of the rotating shaft.

[0018] By adopting the above technical solution and arranging multiple pressure detection points on the detection ring, the pressure detection error can be reduced by comparing the pressure values ​​of the multiple pressure detection points, thereby improving the accuracy of the fracture position determination.

[0019] Optionally, the step of determining the fracture position of the rotating shaft according to the change of the detected pressure value includes:

[0020] Acquire a pressure displacement set, the pressure displacement set including a pressure set and corresponding associated detection displacements, each of the pressure sets including detection pressure values ​​corresponding to a plurality of the pressure detection points;

[0021] Determining whether there is a detected pressure value in the pressure concentration that is smaller than the initial pressure value;

[0022] If so, the shaft fracture position is determined according to the detected displacement associated with the pressure set.

[0023] By adopting the above technical solution, when the detection ring moves, the detection displacement of the detection ring and the corresponding pressure set are obtained in real time, and the detection pressure value in the pressure set is judged. If there is a detection pressure value in a certain pressure set that is less than the initial pressure value, the detection displacement corresponding to the pressure set is the fracture position of the rotating shaft.

[0024] Optionally, the steps after determining the fracture position of the rotating shaft according to the detected displacement associated with the pressure set include:

[0025] Obtain the numbers of the pressure detection points corresponding to all the detection pressure values ​​smaller than the initial pressure value in the current pressure concentration; each of the pressure detection points is numbered in advance;

[0026] Determining the fracture degree of the rotating shaft according to the numbered quantity;

[0027] Get all numbers of the current pressure set that are not less than the initial pressure value;

[0028] Map all the numbers into the pre-built four quadrants;

[0029] The offset direction of the fracture axis is determined according to the quadrants in which all the numbers are located.

[0030] By adopting the above technical solution, the degree of fracture of the shaft and the offset direction of the broken shaft can be determined by the number of pressure detection points less than the initial pressure value and the distribution of pressure detection points not less than the initial pressure value, so that the staff can formulate corresponding processing strategies in time.

[0031] In a second aspect, the present application provides a furnace refiner shaft fracture detection system, which adopts the following technical solutions:

[0032] A furnace refiner shaft fracture detection system comprising:

[0033] A volume acquisition module is used to acquire the real-time volume of the powder pre-filled in the rotating shaft when the rotating shaft is working, wherein a filling cavity is provided inside the rotating shaft, and the powder is filled in the filling cavity;

[0034] A judging module, configured to judge whether the real-time volume is smaller than the initial volume;

[0035] The information sending module is used to send an alarm message when the real-time volume is smaller than the initial volume.

[0036] By adopting the above technical solution, since the shaft is pre-filled with powder, when the shaft is intact, the volume of the powder filled in the shaft remains unchanged. When the shaft breaks, the filled powder will leak, resulting in a decrease in volume. Therefore, it is only necessary to determine whether the real-time volume of the powder filled in the shaft is less than the initial volume. When the real-time volume is less than the initial volume, an alarm message is sent to remind the staff that the shaft is broken.

[0037] In a third aspect, the present application provides a device for detecting fracture of a shaft of a furnace refiner, which adopts the following technical solution:

[0038] A device for detecting fracture of a shaft of a furnace refiner, comprising:

[0039] A material level meter, wherein a filling cavity is coaxially opened in the rotating shaft, the filling cavity is filled with powder, and the material level meter is installed at one end of the rotating shaft close to the motor, for detecting the height of the powder in the filling cavity;

[0040] a controller, in communication with the material level meter, for obtaining the real-time volume and initial volume of the powder according to the height value sent by the material level meter, and determining whether the real-time volume is less than the initial volume; if so, sending an alarm message;

[0041] The alarm is used to receive and respond to the alarm information and perform an alarm action.

[0042] By adopting the above technical solution, since the rotating shaft is pre-filled with powder, when the rotating shaft is intact, the height of the powder filled in the rotating shaft detected by the level meter remains unchanged, that is, the volume remains unchanged at the initial volume; when the rotating shaft breaks, the filled powder will leak, resulting in a decrease in height and a decrease in volume. Therefore, it is only necessary to determine whether the real-time volume of the powder filled in the rotating shaft is less than the initial volume. When the real-time volume is less than the initial volume, the controller sends an alarm message to the alarm device, and the alarm device responds to the alarm message and executes an alarm action, thereby reminding the staff that the rotating shaft is broken.

[0043] Optionally, the detection device further includes:

[0044] A detection ring is coaxially slidably connected in the sliding cavity, and the sliding cavity is pre-coaxially opened in the rotating shaft;

[0045] Pressure sensors are evenly installed on the detection ring along the circumference of the detection ring, and each pressure sensor corresponds to a pressure detection point and a corresponding number;

[0046] a compression spring, one end of which is mounted on the pressure sensor;

[0047] An extrusion plate abuts against the inner wall of the sliding cavity, and the other end of the extrusion spring is mounted on the extrusion plate;

[0048] The driving mechanism is used to drive the movement of the detection ring.

[0049] By adopting the above technical solution, when the rotating shaft is intact, the force of the extrusion spring squeezing the pressure sensor is basically unchanged. When the detection ring moves to the fracture position, the abutment state between the extrusion plate and the inner wall of the sliding cavity changes, thereby causing a large change in the force of the extrusion spring squeezing the pressure sensor; therefore, the fracture position can be determined based on the pressure change.

[0050] Optionally, the driving mechanism includes:

[0051] A driving rod is inserted into the sliding cavity, one end of which is fixedly connected to the detection ring and is slidingly connected to the rotating shaft;

[0052] A driving motor is installed on the rotating shaft and is used to drive the driving rod to rotate.

[0053] By adopting the above technical solution, after the driving motor drives the driving rod to rotate, the driving rod drives the movement of the detection ring, and the displacement of the detection ring can be determined by the displacement of the driving rod.

[0054] Optionally, the driving mechanism further includes:

[0055] A rotating rod, rotatably connected to the rotating shaft;

[0056] A driving main gear is coaxially fixedly connected to the rotating rod;

[0057] A driving slave gear is rotatably connected to the rotating shaft, and the driving rod is coaxially threadedly connected to the driving slave gear, and the driving slave gear is meshed with the driving master gear;

[0058] A winding shaft is rotatably mounted on the rotating shaft and coaxially sleeved on the output shaft of the driving motor;

[0059] A pulling wire, one end of which is fixedly connected to the extrusion plate, and the other end of which passes through the extrusion spring and the detection ring and out of the rotating shaft and is wound around the winding shaft;

[0060] There are two three-jaw chucks, one is coaxially mounted on the winding shaft and coaxially sleeved on the output shaft of the driving motor; the other is coaxially mounted on the rotating rod and coaxially sleeved on the output shaft of the driving motor.

[0061] By adopting the above technical solution, when the crack of the rotating shaft is large, the extrusion plate will detach from the rotating shaft; therefore, in order to protect the pressure sensor and make the pressure sensor reusable, the detection ring needs to be reset. Therefore, the rotation of the winding shaft and the rotating rod can be achieved through the action of the two three-jaw chucks, thereby achieving the reset of the extrusion plate and the reset of the detection ring.

[0062] In summary, this application has at least the following beneficial effects:

[0063] 1. The purpose of opening a filling cavity in the rotating shaft to fill powder and obtain the real-time volume of the powder is that when the rotating shaft is intact, the volume of the powder filled in the rotating shaft remains unchanged. When the rotating shaft is broken, the filled powder will leak, resulting in a decrease in volume. Therefore, it is only necessary to determine whether the real-time volume of the powder filled in the rotating shaft is less than the initial volume. When the real-time volume is less than the initial volume, an alarm message is sent to remind the staff that the rotating shaft is broken.

[0064] 2. The purpose of driving the detection ring to move and obtaining the detection displacement of the detection ring and the detection pressure exerted on the inner wall of the rotating shaft is to quickly determine the fracture position of the rotating shaft.

[0065] 3. The purpose of distributing multiple pressure detection points on the detection ring and obtaining the numbers of the pressure detection points corresponding to all the detection pressure values ​​​​that are less than the initial pressure value in the current pressure concentration is to determine the degree of fracture of the shaft and the offset direction of the shaft fracture through the distribution of pressure detection points that are less than the initial pressure value, so that the staff can formulate corresponding treatment strategies in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 This is the network architecture diagram of this application;

[0067] Figure 2 This is a schematic diagram of the structure of the rotating shaft display filling cavity in the embodiment of the device of the present application;

[0068] Figure 3 It is a structural diagram showing the sliding cavity of the rotating shaft;

[0069] Figure 4 yes Figure 3 A magnified schematic diagram of the structure of part A;

[0070] Figure 5 It is a flowchart of an embodiment of the method of the present application;

[0071] Figure 6 yes Figure 5 A flowchart of steps that can be executed after S130;

[0072] Figure 7 It is a flowchart of a specific step of S180;

[0073] Figure 8 It is a structural block diagram of an embodiment of the system of the present application.

[0074] Explanation of the accompanying drawings: 101, volume acquisition module; 102, judgment module; 103, information sending module; 104, displacement acquisition module; 105, pressure value acquisition module; 106, fracture analysis module; 210, material level meter; 220, controller; 230, alarm; 240, detection ring; 241, pressure sensor; 250, extrusion spring; 260, extrusion plate; 300, driving mechanism; 310, driving rod; 320, driving motor; 330, rotating rod; 340, driving main gear; 350, driving slave gear; 360, winding shaft; 370, pulling wire; 380, three-jaw chuck; 400, rotating shaft; 410, filling chamber; 420, sliding chamber. DETAILED DESCRIPTION

[0075] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1 -Attached Figure 8The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0076] The first embodiment of the present application provides a device for detecting the fracture of a shaft of a furnace refiner. Figure 1 and Figure 2 As one embodiment of the detection device, the detection device may include a level meter 210, a controller 220, and an alarm 230. A filling chamber 410 is coaxially defined within the rotating shaft 400, and the filling chamber 410 is filled with powder. The level meter 210 is mounted on one end of the rotating shaft 400 near the motor to detect the height of the powder within the filling chamber 410. The controller 220 is in communication with the level meter 210 to obtain the real-time volume and initial volume of the powder based on the height value transmitted by the level meter 210, and to determine whether the real-time volume is less than the initial volume. If so, an alarm message is transmitted. The alarm 230 is configured to receive and respond to the alarm message to execute an alarm action.

[0077] Further, refer to Figure 3 and Figure 4 The detection device may further include a detection ring 240 , a pressure sensor 241 , a compression spring 250 , a compression plate 260 and a driving mechanism 300 .

[0078] A sliding cavity 420 is coaxially defined within the rotating shaft 400. The detection ring 240 is coaxially slidably connected within the sliding cavity 420. Pressure sensors 241 are evenly mounted on the detection ring 240 along its circumference. Each pressure sensor 241 corresponds to a pressure detection point, and each pressure detection point is associated with a number. An extrusion spring 250 is mounted on the pressure sensor 241 at one end and on the extrusion plate 260 at the other end. The extrusion plate 260 abuts the inner wall of the sliding cavity 420. The drive mechanism 300 is used to drive the movement of the detection ring 240.

[0079] The drive mechanism 300 may include a drive rod 310, a drive motor 320, a rotating rod 330, a drive main gear 340, a drive slave gear 350, a winding shaft 360, a pull wire 370 and a three-jaw chuck 380. The drive motor 320 and the three-jaw chuck 380 are both in communication with the controller 220.

[0080] The drive rod 310 is inserted into the sliding cavity 420 and fixedly connected to the detection ring 240 at one end. The drive slave gear 350 is rotatably connected to the rotating shaft 400, and the drive rod 310 is threadedly connected to the drive slave gear 350. The rotating rod 330 is rotatably connected to the rotating shaft 400, and the drive master gear 340 is coaxially fixedly connected to the rotating rod 330, and the drive master gear 340 can mesh with the drive slave gear 350. One end of the pull wire 370 is fixedly connected to the extrusion plate 260, and the other end passes through the extrusion spring 250 and the detection ring 240, and then passes out of the rotating shaft 400 and is wound around the winding shaft 360. The drive motor 320 is mounted on the rotating shaft 400. The winding shaft 360 is coaxially sleeved on the output shaft of the drive motor 320 and is rotatably mounted on the rotating shaft 400 via a bracket (not shown). Two three-jaw chucks 380 are provided, one is coaxially mounted on the winding shaft 360 and coaxially sleeved on the output shaft of the driving motor 320, and the other is coaxially mounted on the rotating rod 330 and coaxially sleeved on the output shaft of the driving motor 320.

[0081] The implementation principle of this embodiment is:

[0082] The controller 220 receives the height value sent by the material level meter 210 to obtain the real-time volume and initial volume of the powder, and determines whether the real-time volume is less than the initial volume. If so, an alarm message is sent, and the alarm device 230 responds to the alarm message and performs an alarm action;

[0083] The driving motor 320 drives the rotation of the driving rod 310, and the driving rod 310 drives the movement of the detection ring 240; each time it moves, the controller 220 obtains the pressure set at this time, and determines whether there is a detection pressure value in the pressure set that is less than the initial pressure value. If so, the detection displacement associated with the pressure set is the fracture position of the rotating shaft 400; after determining the fracture position of the rotating shaft 400, the controller 220 determines the fracture degree of the rotating shaft 400 based on the number of detection pressure values ​​in the pressure concentration that are less than the initial pressure value, and determines the offset direction of the broken rotating shaft 400 based on the quadrant where the number is not less than the initial pressure value.

[0084] The second embodiment of the present application discloses a method for detecting fracture of a shaft of a furnace refiner. Figure 5 As an implementation of the detection method, the detection method may include S110-S130:

[0085] S110, when the rotating shaft 400 is working, obtaining the real-time volume of the powder pre-filled in the rotating shaft 400;

[0086] S120, determining whether the real-time volume is smaller than the initial volume;

[0087] S130: If yes, send an alarm message.

[0088] Specifically, a filling cavity 410 is provided inside the rotating shaft 400, and powder is filled in the filling cavity 410. The powder may be aluminum powder or other powder. When the rotating shaft 400 is intact, the volume of the powder obtained for the first time is the initial volume. When calculating the volume, the height of the powder can be obtained by the material level meter 210, and then the volume of the powder in the filling cavity 410 can be obtained based on the obtained area of ​​the filling cavity 410. Since the area of ​​the filling cavity 410 is a fixed value, it is only necessary to detect the height of the powder to determine whether the volume of the powder has changed. When the real-time volume is less than the initial volume, it indicates that the powder material has leaked, so an alarm message is sent to remind the staff that the rotating shaft 400 is broken. When it is judged that the real-time volume is less than the initial volume, the real-time volume can be obtained every 30 minutes, and the acquisition cycle of the real-time volume can be set in the background.

[0089] Reference Figure 6 , further, after S130, S150-S180 may be executed:

[0090] S150 , driving the detection ring 240 preset in the rotating shaft 400 to move axially along the rotating shaft 400 ;

[0091] S160, acquiring the detection displacement of the detection ring 240 in real time;

[0092] S170, obtaining a detection pressure value of the detection ring 240 exerted by the inner wall of the rotating shaft 400;

[0093] S180 , determining the fracture position of the rotating shaft 400 according to the change of the detected pressure value.

[0094] Specifically, a sliding cavity 420 is coaxially defined within the rotating shaft 400, and the detection ring 240 is slidably connected within the sliding cavity 420. The detection ring 240 is evenly divided into multiple pressure detection points, each of which is equipped with a pressure sensor 241. Each pressure detection point is associated with a number, and each number is associated with an angle value. For example, if there are four pressure detection points, the four pressure detection points can be represented by numbers 1-4, and the corresponding angle values ​​are 0°, 90°, 180°, and 360°, respectively.

[0095] When the detection ring 240 is driven to move by the driving rod 310, the position of the detection ring 240, that is, the detection displacement, can be determined based on the moving length of the driving rod 310; the moving length of the driving rod 310 can be determined based on the rotation speed and rotation time of the driving motor 320 and the pitch on the driving rod 310; in addition, the moving distance of the driving rod 310 per unit time can also be obtained through the test data of the historical driving rod 310 test.

[0096] Reference Figure 7 Specifically, for S180, a specific step includes S181-S183:

[0097] S181, obtaining a pressure displacement set, the pressure displacement set including a pressure set and corresponding associated detection displacements, each pressure set including detection pressure values ​​corresponding to a plurality of pressure detection points;

[0098] S182, determining whether there is a detection pressure value in the pressure concentration that is less than the initial pressure value;

[0099] S183: If yes, determine the fracture position of the rotating shaft 400 according to the detected displacement associated with the pressure set.

[0100] Specifically, starting from the initial position of detection ring 240 and using the distance traveled by drive rod 310 per unit time as a reference, each time detection ring 240 is moved by drive rod 310, the current pressure set is acquired and a determination is made as to whether any detection pressure value within the current pressure set is less than the initial pressure value. For example, if the displacement of detection ring 240 within 1 second is a, the acquired pressure set is M, where M is {M1-1, M2-2, M3-3, M4-4}; M1-1 represents the detection pressure value M1 at pressure detection point number 1. M1, M2, M3, and M4 are compared with the initial pressure value C. If M1, M2, M3, and M4 are not less than Z, detection ring 240 is driven to continue moving. After detection ring 240 moves another 1 second, the displacement of detection ring 240 is b, and the acquired pressure set is Z, where Z is {Z1-1, Z2-2, Z3-3, Z4-4}. Compare Z1, Z2, Z3, and Z4 with the initial pressure value C respectively. If Z1 and Z2 are smaller than C, it means that the detection ring 240 has moved to the broken position of the rotating shaft 400. Therefore, the broken position of the rotating shaft 400 can be determined to be b.

[0101] Furthermore, the degree of fracture of the rotating shaft 400 can be determined based on the number of pressure detection points within the pressure set that are less than the initial pressure value. If less than half of the pressure detection points are less than the initial pressure value, the fracture is determined to be minor; if half of the pressure detection points are less than the initial pressure value, the fracture is determined to be severe; if more than half of the pressure detection points are less than all of the pressure detection points, the fracture is determined to be severe; and if all of the pressure detection points are less than the initial pressure value, the fracture is determined to be complete. For example, if only Z1 is less than C, the fracture is determined to be minor; if both Z1 and Z2 are less than C, the fracture is determined to be severe; if Z1, Z2, and Z3 are all less than C, the fracture is determined to be severe; and if Z1, Z2, Z3, and Z4 are all less than C, the fracture is determined to be complete.

[0102] Furthermore, if the shaft 400 is not completely broken, the fracture direction of the shaft 400 can be determined based on the position of the shaft 400 where the number with a value greater than the initial pressure is located, that is, the angle value associated with the number. For example, four quadrants are constructed based on the center and diameter of the shaft 400. If the number with a value greater than the initial pressure is in the fourth quadrant, it means that the broken shaft 400 is tilted towards the fourth quadrant.

[0103] The implementation principle of this embodiment is:

[0104] When the rotating shaft 400 is working, the real-time volume of the powder is periodically obtained. Each time it is obtained, it is determined whether the real-time volume is less than the initial volume. If so, an alarm message is sent; then the detection ring 240 is driven to move axially along the rotating shaft 400. Each time it moves, the pressure set at this time is obtained, and it is determined whether there is a detection pressure value less than the initial pressure value in the pressure set. If so, the detection displacement associated with the pressure set is the fracture position of the rotating shaft 400; after determining the fracture position of the rotating shaft 400, the fracture degree of the rotating shaft 400 is determined according to the number of detection pressure values ​​less than the initial pressure value in the pressure set, and the offset direction of the broken rotating shaft 400 is determined according to the quadrant where the number not less than the initial pressure value is located.

[0105] Based on the above method embodiment, the third embodiment of the present application discloses a shaft fracture detection system for a furnace refiner. Figure 8 As an embodiment of the detection system, the detection system may include:

[0106] The volume acquisition module 101 is used to acquire the real-time volume of the powder pre-filled in the rotating shaft 400 when the rotating shaft 400 is in operation. The rotating shaft 400 has a filling cavity 410 formed therein, and the powder is filled in the filling cavity 410;

[0107] A judgment module 102 is used to judge whether the real-time volume is smaller than the initial volume;

[0108] The information sending module 103 is used to send an alarm message when the real-time volume is smaller than the initial volume.

[0109] Furthermore, the detection system may also include:

[0110] The displacement acquisition module 104 is used to acquire the detection displacement of the detection ring 240 in real time when the driving rod 310 drives the detection ring 240 preset in the rotating shaft 400 to move circumferentially along the rotating shaft 400;

[0111] The pressure value acquisition module 105 is used to obtain the detection pressure value of the detection ring 240 exerted by the inner wall of the rotating shaft 400;

[0112] The fracture analysis module 106 is used to determine the fracture position of the rotating shaft 400 according to the change of the detection pressure value.

[0113] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Unless otherwise specified, any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features. In other words, unless otherwise specified, each feature is merely an example of a series of equivalent or similar features.

Claims

1. A method for detecting fracture of a shaft of a furnace refiner, characterized in that: include: When the rotating shaft (400) is working, the real-time volume of the powder pre-filled in the rotating shaft (400) is obtained, a filling cavity (410) is provided inside the rotating shaft (400), and the powder is filled in the filling cavity (410); Determining whether the real-time volume is smaller than the initial volume; If so, an alarm message is sent.

2. A method for detecting fracture of a shaft of a furnace refiner according to claim 1, characterized in that: After sending the alarm information, the method includes: driving a detection ring (240) preset in the rotating shaft (400) to move axially along the rotating shaft (400); Acquiring the detection displacement of the detection ring (240) in real time; Obtaining a detection pressure value exerted on the detection ring (240) by the inner wall of the rotating shaft (400); The fracture position of the rotating shaft (400) is determined according to the change in the detected pressure value.

3. A method for detecting fracture of a shaft of a furnace refiner according to claim 2, characterized in that: The step of obtaining the detection pressure value of the detection ring (240) exerted on the inner wall of the rotating shaft (400) comprises: The detection pressure value of each pressure detection point uniformly arranged in advance on the detection ring (240) subjected to the inner wall of the rotating shaft (400) is obtained.

4. A method for detecting fracture of a shaft of a furnace refiner according to claim 3, characterized in that: The step of determining the fracture position of the rotating shaft (400) according to the change of the detected pressure value comprises: Acquire a pressure displacement set, the pressure displacement set including a pressure set and corresponding associated detection displacements, each of the pressure sets including detection pressure values ​​corresponding to a plurality of the pressure detection points; Determining whether there is a detected pressure value in the pressure concentration that is smaller than the initial pressure value; If so, the fracture position of the rotating shaft (400) is determined according to the detected displacement associated with the pressure set.

5. A method for detecting fracture of a shaft of a furnace refiner according to claim 4, characterized in that: The steps after determining the fracture position of the rotating shaft (400) according to the detected displacement associated with the pressure set include: Obtain the numbers of the pressure detection points corresponding to all the detection pressure values ​​smaller than the initial pressure value in the current pressure concentration; each of the pressure detection points is numbered in advance; Determining the fracture degree of the rotating shaft (400) according to the numbered quantity; Get all numbers of the current pressure set that are not less than the initial pressure value; Map all the numbers into the pre-built four quadrants; According to the quadrants where all the numbers are located, the offset direction of the fracture axis (400) is determined.

6. A furnace refiner shaft fracture detection system, characterized in that: include: The volume acquisition module (101) is used to acquire the real-time volume of the powder pre-filled in the rotating shaft (400) when the rotating shaft (400) is working, wherein a filling cavity (410) is provided inside the rotating shaft (400), and the powder is filled in the filling cavity (410); A judgment module (102) is used to judge whether the real-time volume is smaller than the initial volume; The information sending module (103) is used to send an alarm message when the real-time volume is smaller than the initial volume.

7. A device for detecting shaft fracture of a furnace refiner, characterized in that: include: A material level meter (210) is provided coaxially with a filling cavity (410) in the rotating shaft (400), the filling cavity (410) being filled with powder, and the material level meter (210) is mounted on an end of the rotating shaft (400) close to the motor and is used to detect the height of the powder in the filling cavity (410); The controller (220) is in communication with the material level meter (210) and is used to obtain the real-time volume and initial volume of the powder according to the height value sent by the material level meter (210), and to determine whether the real-time volume is less than the initial volume; if so, to send an alarm message; The alarm device (230) is used to receive and respond to the alarm information and perform an alarm action.

8. The device for detecting fracture of a shaft of a furnace refiner according to claim 7, characterized in that: The detection device also includes: The detection ring (240) is coaxially slidably connected in the sliding cavity (420), and the sliding cavity (420) is pre-coaxially opened in the rotating shaft (400); Pressure sensors (241) are evenly mounted on the detection ring (240) along the circumference of the detection ring (240), and each pressure sensor (241) corresponds to a pressure detection point and a corresponding number; A compression spring (250), one end of which is mounted on the pressure sensor (241); An extrusion plate (260) abuts against the inner wall of the sliding cavity (420), and the other end of the extrusion spring (250) is mounted on the extrusion plate (260); The driving mechanism (300) is used to drive the movement of the detection ring (240).

9. The device for detecting fracture of a shaft of a furnace refiner according to claim 8, characterized in that: The driving mechanism (300) comprises: A driving rod (310) is inserted into the sliding cavity (420) and is slidingly connected to the rotating shaft (400), and one end of the driving rod is fixedly connected to the detection ring (240); A driving motor (320) is mounted on the rotating shaft (400) and is used to drive the driving rod (310) to rotate.

10. The device for detecting fracture of a shaft of a furnace refiner according to claim 9, characterized in that: The driving mechanism (300) further includes: A rotating rod (330) rotatably connected to the rotating shaft (400); A driving main gear (340) is coaxially fixedly connected to the rotating rod (330); A driving slave gear (350) is rotatably connected to the rotating shaft (400), and the driving rod (310) is coaxially threadedly connected to the driving slave gear (350) and meshes with the driving master gear (340); A winding shaft (360) is rotatably mounted on the rotating shaft (400) and coaxially sleeved on the output shaft of the driving motor (320); A pulling wire (370), one end of which is fixedly connected to the extrusion plate (260), and the other end of which passes through the extrusion spring (250) and the detection ring (240) and passes out of the rotating shaft (400) to be wound around the winding shaft (360); Two three-jaw chucks (380) are provided, one is coaxially mounted on the winding shaft (360) and coaxially sleeved on the output shaft of the driving motor (320); the other is coaxially mounted on the rotating rod (330) and coaxially sleeved on the output shaft of the driving motor (320).

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