Bearing temperature probe insertion depth measurement device and method

Abstract

This application relates to the field of bearing temperature measurement technology, and provides a bearing temperature probe insertion depth measurement device and method. The bearing is disposed in a bearing chamber, the bearing chamber has a mounting hole, and the temperature probe has a mounting connector for inserting into the mounting hole. The bearing temperature probe insertion depth measurement device includes an insertion rod, a positioning unit, a displacement measurement unit, and a processing unit. This application can realize the measurement and comparison of the insertion depth of the temperature probe and the depth of the mounting hole, thereby ensuring that the insertion depth of the temperature probe meets the installation requirements, effectively preventing temperature measurement deviations caused by insufficient insertion depth of the temperature probe, avoiding equipment failure risks in advance, and improving operational safety.

Description

Technical Field

[0001] This application relates to the field of bearing temperature measurement technology, and in particular provides a bearing temperature probe insertion depth measurement device and method. Background Technology

[0002] In bearing temperature measurement, the insertion depth of the temperature probe significantly affects the accuracy of the measurement results. However, in actual installation, due to a lack of precise control and measurement methods for the temperature probe insertion depth, the probe is often not inserted properly (i.e., it does not contact the bearing), resulting in a large deviation between the measured bearing temperature and the actual value. This measurement deviation not only affects the judgment of the operating status of equipment such as pumps or motors, but may also cause abnormal operation or even damage to the equipment in severe cases. Summary of the Invention

[0003] The purpose of this application is to provide a bearing temperature probe insertion depth measurement device and method, which aims to solve the problem that inaccurate temperature measurement, abnormal equipment operation, or even damage may occur due to insufficient insertion depth of existing temperature probes during installation.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, embodiments of this application provide a bearing shell temperature probe insertion depth measuring device. The bearing shell is disposed in a bearing chamber, the bearing chamber has a mounting hole, and the temperature probe has a mounting connector for inserting into the mounting hole. The bearing shell temperature probe insertion depth measuring device includes:

[0006] A plug rod is used to insert into the mounting hole and contact the bearing bush;

[0007] The positioning unit is axially movable on the insertion rod. The positioning unit is used to overlap the mounting hole, or the positioning unit is used to connect the mounting joint and arrange the temperature probe to extend along the axial direction of the insertion rod.

[0008] The displacement measuring unit includes a first detection element and a second detection element. The first detection element is disposed on the insertion rod, and the second detection element is disposed on the positioning unit. It is used to measure the insertion depth of the temperature probe and the hole depth of the mounting hole.

[0009] The processing unit is communicatively connected to the displacement measurement unit and is used to compare the insertion depth of the measured temperature probe with the depth of the mounting hole to determine whether the insertion depth of the temperature probe meets the installation requirements.

[0010] In some embodiments, the bearing temperature probe insertion depth measuring device further includes:

[0011] A pressure detection unit is located at one end of the insertion rod that contacts the bearing bush and is communicatively connected to the processing unit. The pressure detection unit is used to detect the contact pressure of the insertion rod, and the processing unit is used to determine the hole depth of the mounting hole measured by the displacement measurement unit when the contact pressure reaches a first preset threshold.

[0012] In some embodiments, the processing unit includes:

[0013] The controller is communicatively connected to the displacement measuring unit and the pressure detection unit.

[0014] The display is communicatively connected to the controller.

[0015] In some embodiments, the processing unit further includes a prompting component, which is communicatively connected to the controller. The prompting component is used to issue a first prompting message when the contact pressure detected by the pressure detection unit reaches a first preset threshold in multiple consecutive preset sampling periods. The controller is used to determine the hole depth of the mounting hole measured by the displacement measurement unit.

[0016] In some embodiments, the prompting component is further configured to issue a second prompting message when the contact pressure reaches a second preset threshold.

[0017] Wherein, the second preset threshold is greater than the first preset threshold.

[0018] In some embodiments, the displacement measuring unit is a capacitive grating sensor, which includes a fixed grating and a moving grating. The first detection element is the fixed grating, the second detection element is the moving grating, and the fixed grating is communicatively connected to the processing unit.

[0019] In some embodiments, the positioning unit includes:

[0020] The positioning base has a positioning hole, through which the insertion rod passes; the positioning base is provided with the second detection element;

[0021] An elastic buckle is provided on the positioning base for securing the mounting connector.

[0022] In some embodiments, the positioning unit further includes:

[0023] The positioning assembly includes multiple clips arranged in a ring between the insertion rod and the positioning hole, and the multiple clips are capable of contracting or expanding radially along the insertion rod to keep the insertion rod aligned with the central axis of the positioning hole.

[0024] Secondly, embodiments of this application also provide a measurement method for the bearing temperature probe insertion depth measuring device of the above embodiments, including: a first measurement stage, a second measurement stage, and a comparison stage; wherein,

[0025] In the first measurement stage, the mounting connector is installed on the positioning unit, and the temperature probe is arranged to extend along the axial direction of the insertion rod. The positioning unit is moved so that the detection end of the temperature probe is flush with the end of the insertion rod that contacts the bearing. The insertion depth of the temperature probe is measured by the cooperation of the first detection element and the second detection element.

[0026] In the second measurement stage, the insertion rod is inserted into the mounting hole, the positioning unit is attached to the mounting hole, the insertion rod is moved so that the insertion rod contacts the bearing bush, and the depth of the mounting hole is determined by the first detection element and the second detection element.

[0027] During the comparison phase, the processing unit compares the insertion depth of the temperature probe with the depth of the mounting hole to determine whether the insertion depth of the temperature probe meets the installation requirements.

[0028] In some embodiments, determining whether the insertion depth of the temperature probe meets the installation requirements includes:

[0029] If the difference between the measured insertion depth of the temperature probe and the depth of the mounting hole is within a preset range, then the insertion depth of the temperature probe meets the installation requirements.

[0030] If the difference between the measured insertion depth of the temperature probe and the depth of the mounting hole is not within the preset range, then the insertion depth of the temperature probe does not meet the installation requirements.

[0031] The beneficial effects of the bearing temperature probe insertion depth measuring device and method provided in this application are as follows: This application, through the cooperation of the insertion rod, positioning unit, and displacement measuring unit, can measure both the insertion depth of the temperature probe and the depth of the mounting hole. The processing unit can compare the measured insertion depth of the temperature probe and the depth of the mounting hole, and determine whether they match based on the difference, thereby ensuring that the temperature probe insertion depth meets the installation requirements. This application can effectively prevent temperature measurement deviations caused by insufficient temperature probe insertion depth, proactively avoid equipment failure risks, and improve operational safety. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a temperature probe provided in an embodiment of this application;

[0034] Figure 2 A schematic diagram illustrating the installation of a temperature probe for measuring bearing temperature, provided in an embodiment of this application.

[0035] Figure 3 This is a schematic diagram of the bearing temperature probe insertion depth measuring device provided in the embodiments of this application;

[0036] Figure 4 This is a schematic diagram of the positioning unit provided in an embodiment of this application;

[0037] Figure 5 One of the schematic diagrams showing the distribution of clips provided in the embodiments of this application;

[0038] Figure 6 A second schematic diagram showing the distribution of clips provided in an embodiment of this application;

[0039] Figure 7 A schematic flowchart illustrating the measurement method of the bearing temperature probe insertion depth measuring device provided in this application embodiment.

[0040] The following are the labeling elements in the figure:

[0041] 1. Bearing shell; 2. Bearing housing; 3. Mounting hole; 4. Temperature probe; 5. Mounting connector; 6. Insert rod;

[0042] 7. Positioning unit; 8. Processing unit; 9. Second detection element; 10. Detection end; 11. Wiring terminal;

[0043] 12. Pressure detection unit; 13. Positioning base; 14. Elastic buckle; 15. Positioning hole;

[0044] 16. Clamping plate; 17. Driving component; 18. Fixed end; 19. Free end; 20. Spherical handle. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0046] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0048] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0049] In some embodiments, refer to Figures 1 to 3 As shown, this application provides a bearing shell temperature probe insertion depth measuring device. The bearing shell 1 is disposed in the bearing chamber 2, the bearing chamber 2 is provided with a mounting hole 3, and the temperature probe 4 is provided with a mounting connector 5 for inserting into the mounting hole 3. The bearing shell temperature probe insertion depth measuring device includes: a rod 6, a positioning unit 7, a displacement measuring unit, and a processing unit 8. The rod 6 is used to insert into the mounting hole 3 and contact the bearing shell 1. The positioning unit 7 can move axially relative to the rod 6. The positioning unit 7 is used to overlap the mounting hole 3, or the positioning unit 7 is used to connect the mounting connector 5 and arrange the temperature probe 4 to extend axially along the rod 6. The displacement measuring unit includes a first detection element (not shown in the figure) and a second detection element 9. The first detection element is disposed on the rod 6, and the second detection element 9 is disposed on the positioning unit 7, used to cooperate in measuring the insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3. The processing unit 8 is communicatively connected to the displacement measuring unit and is used to compare the measured insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3 to determine whether the insertion depth of the temperature probe 4 meets the installation requirements.

[0050] like Figure 1As shown, temperature probe 4 is a temperature sensor, such as a thermocouple sensor or a resistance temperature detector (RTD) sensor. Temperature probe 4 has a mounting connector 5, a detection end 10, and a wiring end 11. The detection end 10 is used to detect temperature, and the wiring end 11 is used to connect external wires.

[0051] like Figure 2 As shown, the bearing bush 1 is the component in the bearing that directly contacts the journal. It is installed inside the bearing housing 2 to support the shaft and reduce friction. To facilitate temperature measurement of the bearing bush 1 inside the bearing housing 2, the bearing housing 2 is provided with a mounting hole 3 for temperature measurement. When it is necessary to detect the temperature of the bearing bush 1, the temperature probe 4 is inserted into the bearing housing 2 through the mounting hole 3, and the mounting connector 5 on the temperature probe 4 is securely connected to the mounting hole 3 to achieve stability. The temperature change of the bearing bush 1 is detected through the detection end 10 of the temperature probe 4.

[0052] like Figure 3 As shown, the insertion rod 6 serves as a measurement reference component, simulating the insertion path of the temperature probe 4 and contacting the surface of the bearing bush 1. The end of the insertion rod 6 that contacts the bearing bush 1 can be designed to be flat or adapted to the contact surface of the bearing bush 1 to ensure accurate fit. The positioning unit 7 is sleeved on the insertion rod 6 and can slide along the axial direction of the insertion rod 6 to achieve position adjustment, thereby driving the temperature probe 4 and the second detection component 9 fixed thereon to move. Furthermore, the positioning unit 7 can also overlap above the mounting hole 3 to form a positioning reference.

[0053] The first detection element of the displacement measuring unit is located on the insertion rod 6, and the second detection element 9 is located on the positioning unit 7. Through the movable design of the positioning unit 7, the second detection element 9 can be moved relative to the first detection element, thereby detecting the insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3 through the relative displacement change between the two.

[0054] The processing unit 8 can be integrated into the other end of the insertion rod 6, or it can be a separate structure from the insertion rod 6, set up independently in a location convenient for the operator to use. The processing unit 8 is used to receive and compare the measured insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3 to determine whether the insertion depth of the temperature probe 4 meets the installation requirements. It can be understood that the insertion depth of the temperature probe 4 refers to the distance from the mounting joint 5 of the temperature probe 4 to the detection end 10, and the hole depth of the mounting hole 3 refers to the distance from the mounting hole 3 to the surface of the bearing 1 that contacts the insertion rod 6.

[0055] The working principle of the bearing temperature probe insertion depth measuring device provided in this application embodiment is described below. The working principle of the measuring device in this application is based on the "comparative measurement method", that is, measuring the insertion depth of the temperature probe 4 itself (ideal state) and the actual hole depth of the mounting hole 3 (real conditions) respectively, and judging whether they match by the difference between the two, thereby ensuring that the probe is inserted in place.

[0056] Specifically, the measuring device of this application has a first measuring stage (measuring the insertion depth of the temperature probe 4), a second measuring stage (measuring the hole depth of the mounting hole 3), and a comparison stage.

[0057] First measurement stage: Install the mounting connector 5 of the temperature probe 4 onto the positioning unit 7, and arrange the temperature probe 4 along the axial direction of the insertion rod 6; move the positioning unit 7 on the insertion rod 6 so that the detection end 10 of the temperature probe 4 is flush with the end of the bushing 1 in contact with the insertion rod 6. During the movement of the positioning unit 7, the second detection element 9 on the positioning unit 7 moves relative to the first detection element on the insertion rod 6. Utilize the relative displacement between the first and second detection elements 9 to measure the distance from the positioning unit 7 to the end of the insertion rod 6. Since the temperature probe 4 is fixed to the positioning unit 7 through the mounting connector 5, and the detection end 10 of the temperature probe 4 is flush with the end of the insertion rod 6, the measured distance is the distance from the mounting connector 5 of the temperature probe 4 to the detection end 10, which is also the insertion depth of the temperature probe 4.

[0058] Second measurement stage: Insert the insertion rod 6 into the mounting hole 3, with the positioning unit 7 flush with the top of the mounting hole 3; move the insertion rod 6 so that its end contacts the bearing shell 1. As the insertion rod 6 moves relative to the positioning unit 7, it drives the first detection element on the insertion rod 6 to move relative to the second detection element 9 on the positioning unit 7. Using the relative displacement between the first detection element and the second detection element 9, the distance from the positioning unit 7 to the end of the insertion rod 6 is measured. Since the positioning unit 7 is flush with the mounting hole 3 and the end of the insertion rod 6 contacts the bearing shell 1, the measured distance is the distance from the mounting hole 3 to the bearing shell 1, which is also the depth of the mounting hole 3.

[0059] Comparison Phase: The processing unit 8 compares and analyzes the insertion depth of the temperature probe 4 with the hole depth of the mounting hole 3. If the difference between the two values ​​is within a preset range, it indicates that the deviation is small and relatively close. In this case, the insertion depth of the temperature probe 4 meets the installation requirements, and the temperature probe 4 can be installed on the mounting hole 3 to stably measure the temperature of the bearing shell 1. If the difference is not within the preset range, it indicates that the deviation is large, and the insertion depth of the temperature probe 4 does not meet the installation requirements. Understandably, in cases of large deviations, when the insertion depth is greater than the hole depth, the mounting connector 5 of the temperature probe 4 is higher than the mounting hole 3 and cannot be inserted, resulting in unstable temperature measurement. When the insertion depth is less than the hole depth, the detection end 10 of the temperature probe 4 cannot contact the bearing shell 1, resulting in inaccurate temperature measurement. In this case, the temperature probe 4 can be replaced, and the insertion depth of the replaced temperature probe 4 can be measured again and compared with the hole depth of the mounting hole 3 until the insertion depth of the replaced temperature probe 4 meets the installation requirements. Then, the temperature probe 4 that meets the installation requirements is inserted into the bearing chamber 2 to achieve stable and accurate measurement of the temperature of the bearing shell 1.

[0060] Therefore, the bearing temperature probe insertion depth measuring device provided in this application embodiment can ensure that the insertion depth of the temperature probe 4 meets the installation requirements, improve the accuracy and reliability of the bearing temperature measurement, thereby effectively preventing temperature measurement deviation caused by insufficient insertion depth of the temperature probe 4, avoiding equipment failure risks in advance, and improving operational safety.

[0061] In some embodiments, refer to Figure 3 As shown, the bearing temperature probe insertion depth measuring device also includes: a pressure detection unit 12, which is located at one end of the insertion rod 6 that contacts the bearing 1 and is communicatively connected to the processing unit 8. The pressure detection unit 12 is used to detect the contact pressure of the insertion rod 6, and the processing unit 8 is used to determine the hole depth of the mounting hole 3 measured by the displacement measuring unit when the contact pressure reaches a first preset threshold.

[0062] The pressure detection unit 12 can be a flexible pressure sensor, including a flexible printed circuit board and a silver nanowire pressure sensor array coated on its surface, used to detect the contact pressure of the insertion rod 6. When the contact pressure reaches a first preset threshold, the sensor resistance value changes abruptly, and the processing unit 8 determines this as a valid contact signal and determines the hole depth of the mounting hole 3 measured by the displacement measurement unit. Of course, other pressure-detecting components can also be used.

[0063] Specifically, in the second measurement stage, the insertion rod 6 is inserted into the mounting hole 3, and the positioning unit 7 overlaps the mounting hole 3, pushing the insertion rod 6 downward until its end contacts the bearing bush 1. The pressure detection unit 12 begins to sense the contact pressure. When the contact pressure reaches a first preset threshold (e.g., 1.5N), the resistance of the nano-silver wire sensor changes abruptly, triggering a valid contact signal. At this point, it is determined that the insertion rod 6 has effectively contacted the bearing bush 1. After receiving the signal, the processing unit 8 starts the displacement measurement unit to record the current distance from the end of the insertion rod 6 to the positioning unit 7, which is also the depth of the mounting hole 3.

[0064] It is understandable that after the insertion rod 6 is inserted into the mounting hole 3, it is difficult for the operator to determine whether it has truly contacted the bearing bush 1. If the judgment is made solely by touch or visual inspection, misjudgment is likely to occur, leading to inaccurate hole depth measurement, which in turn affects the subsequent judgment on whether the insertion depth of the temperature probe 4 matches. In this embodiment, by setting a pressure detection unit 12 at the end of the insertion rod 6, a pressure triggering mechanism is introduced to achieve accurate identification of the contact state, ensuring that the insertion rod 6 is in a state of effective contact with the bearing bush 1 in each measurement. This avoids hole depth measurement errors caused by incomplete or false contact, thereby ensuring the effectiveness and accuracy of the hole depth measurement of the mounting hole 3. In addition, the pressure triggering mechanism also provides an objective standard, improves measurement consistency, and facilitates rapid batch testing.

[0065] In some embodiments, the processing unit 8 includes a controller and a display, wherein the controller is communicatively connected to the displacement measuring unit and the pressure detection unit 12; and the display is communicatively connected to the controller.

[0066] The controller can receive insertion depth and hole depth data from the displacement measurement unit and contact pressure data from the pressure detection unit 12, analyze and process the data, and then send the processed data information to the display, including but not limited to insertion depth, hole depth, contact pressure, and the insertion depth determination result of the temperature probe 4. The display can intuitively show the received data information.

[0067] Therefore, through the above design, the embodiments of this application can ensure that the operator can grasp the measurement information at any time and adjust the operation strategy in a timely manner, thereby improving the user experience and ease of operation.

[0068] In some embodiments, the processing unit 8 further includes a prompting component, which is communicatively connected to the controller. The prompting component is used to issue a first prompting message when the contact pressure detected by the pressure detection unit 12 reaches a first preset threshold in multiple consecutive preset sampling periods. The controller is used to determine the hole depth of the mounting hole 3 measured by the displacement measurement unit.

[0069] The prompting components may include an indicator light and a buzzer. The indicator light is used for visual cues, such as a flashing green light indicating successful detection of effective contact between the plug 6 and the bearing 1. The buzzer is used for auditory cues, such as a short beep indicating confirmation of effective contact.

[0070] The controller receives data from the displacement measurement unit and the pressure detection unit 12, and performs Kalman filtering on the data to improve signal quality. When the contact pressure reaches the first preset threshold after multiple consecutive preset sampling cycles, it is confirmed as valid contact, and then the indicator light flashes and the buzzer sounds briefly. At this time, the hole depth of the mounting hole 3 is determined and calculated, and the result is sent to the display.

[0071] As an example, in the first measurement stage, the mounting connector 5 of the temperature probe 4 is installed on the positioning unit 7, and the temperature probe 4 is arranged to extend along the axial direction of the insertion rod 6; the positioning unit 7 on the insertion rod 6 is moved so that the detection end 10 of the temperature probe 4 is flush with the end of the insertion rod 6, the insertion depth of the temperature probe 4 is detected by the displacement measurement unit, and the detected insertion depth data is sent to the controller for Kalman filtering processing to calculate the insertion depth value.

[0072] In the second measurement stage, the insertion rod 6 is inserted into the mounting hole 3, and the positioning unit 7 is placed flush above the mounting hole 3. The insertion rod 6 is pushed downwards until it contacts the bearing bush 1, and the pressure detection unit 12 begins to monitor the contact pressure. The controller performs Kalman filtering on the received pressure signal. If the contact pressure reaches the first preset threshold (e.g., 1.5N) for three consecutive sampling cycles (e.g., 10ms per cycle), it is confirmed as valid contact. The controller drives the prompting component to issue the first prompt message, such as a green flashing indicator light at a frequency of 5Hz and a short beeping sound (0.2s pulse) at a frequency of 2kHz and a sound pressure level of 75dB. At this time, the controller performs Kalman filtering on the data measured by the displacement measurement unit and calculates the hole depth value.

[0073] During the comparison phase, the controller compares and analyzes the measured hole depth value with the insertion depth value to determine whether the insertion depth of temperature probe 4 meets the installation requirements. If the difference between the two values ​​is within the preset range, the requirements are met; otherwise, they are not.

[0074] The controller sends all relevant data to the display, which updates and displays the insertion depth value, hole depth value, real-time contact pressure value and its trend graph in real time. It can also display the insertion depth judgment result of temperature probe 4 (such as "satisfied" or "not satisfied"). The operator can continue to the next step of the operation based on the prompts and display results.

[0075] Therefore, this embodiment of the application detects contact pressure through multiple consecutive sampling cycles and employs Kalman filtering, which significantly reduces the possibility of misjudgment and ensures the validity and accuracy of each measurement. The prompting component provides intuitive visual and auditory feedback, enabling the operator to instantly understand the measurement status, reducing operational difficulty and improving measurement efficiency.

[0076] In some embodiments, the prompting component is further configured to issue a second prompting message when the contact pressure reaches a second preset threshold; wherein the second preset threshold is greater than the first preset threshold.

[0077] For example, when the contact pressure reaches the first preset threshold (e.g., 1.5N), the first prompt message is triggered, such as the indicator light flashing green and the buzzer sounding briefly; when the contact pressure reaches the second preset threshold (e.g., 2N), the second prompt message is triggered, such as the indicator light flashing red and the buzzer sounding continuously, triggering an overpressure alarm. This can prompt the operator to reduce the applied force and effectively prevent damage to the bearing 1 caused by excessive pressure.

[0078] Therefore, the embodiments of this application provide clear operation feedback through a multi-level prompting mechanism, enabling users to accurately grasp the degree of force applied and reduce the error rate.

[0079] In addition, when temperature probe 4 is used to measure the temperature of bearing 1, the controller can also receive the temperature data from temperature probe 4 and send it to the display for display. The controller can compare the measured temperature with the preset safe temperature value. If the temperature exceeds the safe temperature value, a third prompt message is triggered, such as a red indicator light remaining on and a buzzer sounding continuously, triggering an over-temperature alarm. This can alert the operator that the temperature of bearing 1 is too high and there is a risk to safe operation.

[0080] In some embodiments, the displacement measurement unit can be a capacitive grating sensor, which includes a fixed grating and a moving grating. The first detection element is the fixed grating, and the second detection element 9 is the moving grating. The fixed grating is communicatively connected to the controller of the processing unit 8.

[0081] A capacitive grating sensor is a non-contact displacement sensor based on the principle of capacitance change. It mainly includes a fixed grating and a moving grating. The fixed grating, as the first detection element, is arranged axially on the insertion rod 6. The moving grating, as the second detection element 9, is mounted on the positioning unit 7 and positioned opposite the fixed grating. The moving grating can move axially along the insertion rod 6 with the positioning unit 7. When the positioning unit 7 moves, the moving grating is displaced relative to the fixed grating, and the capacitive coupling state between them changes. A displacement signal can be obtained based on the capacitance change. The controller receives the displacement signal from the capacitive grating sensor to calculate the insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3. This embodiment of the application improves measurement accuracy by using a capacitive grating sensor as the displacement measurement unit.

[0082] In other examples, the first detection element can also be a laser displacement sensor, which can be located at the end of the insertion rod 6 and communicate with the controller. The second detection element 9 can also be a reflective surface or a marker point, which can be located on the side of the positioning unit 7 facing the laser displacement sensor to ensure that the laser displacement sensor can stably detect changes in the position of the positioning unit 7. Specifically, the sensor emits a pulsed laser beam, which is reflected back from the reflective surface or marker point of the positioning unit 7 and received by the sensor. By measuring the time difference between the emission and return of the laser pulse beam, the distance between the positioning unit and the sensor is calculated using the constant speed of light. It can be understood that the laser displacement sensor is located at the end of the insertion rod 6 as the measurement starting point (i.e., the initial reference point), while the reflective surface or marker point is located on the positioning unit 7. As the positioning unit 7 moves along the relative axis of the insertion rod 6, the displacement of the positioning unit 7 relative to the end of the insertion rod 6 can be obtained simply by directly reading the distance value currently measured by the laser displacement sensor.

[0083] When measuring the insertion depth of temperature probe 4, the mounting connector 5 of temperature probe 4 is connected to the positioning unit 7; the positioning unit 7 is moved so that the probe detection end 10 is flush with the end of the insertion rod 6, and the reading of the laser displacement sensor at this time is the insertion depth value of temperature probe 4. Similarly, when measuring the depth of mounting hole 3, the insertion rod 6 is inserted into mounting hole 3 and contacts bearing 1; the positioning unit 7 is attached to mounting hole 3, and the reading of the laser sensor at this time is the depth of mounting hole 3.

[0084] Therefore, the embodiments of this application can quickly and accurately measure the displacement of the positioning unit 7 relative to the end of the insertion rod 6 by means of a laser displacement sensor, thereby achieving accurate measurement of the insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3.

[0085] In some embodiments, refer to Figure 4 As shown, the positioning unit 7 includes: a positioning base 13 and an elastic buckle 14. The positioning base 13 is provided with a positioning hole 15, and the insertion rod 6 passes through the positioning hole 15. A second detection element 9 is provided on the positioning base 13. The elastic buckle 14 is provided on the positioning base 13 and is used to clamp the installation connector 5.

[0086] The positioning base 13 has a positioning hole 15 through which the insertion rod 6 passes, ensuring that the positioning unit 7 can move freely along the axial direction of the insertion rod 6 and maintain a relatively stable movement trajectory. The elastic buckle 14 is used to hold the mounting connector 5 of the temperature probe 4, ensuring that the probe will not loosen or shift during measurement. Furthermore, the mounting connector 5 can be a threaded connector, with a threaded connection between the mounting connector 5 and the mounting hole 3 of the bearing chamber 2. The inner wall of the elastic buckle 14 has a threaded structure adapted to the mounting connector 5. During installation, the mounting connector 5 can be aligned and screwed into the elastic buckle 14, and the clamping force provided by the elastic buckle 14 fixes the temperature probe 4, ensuring its stable position. It is understood that the threaded connection provides a certain adjustment margin to fine-tune the insertion depth of the temperature probe 4, allowing it to better contact the bearing bush 1. In addition, the elastic buckle 14 can be made of elastic rubber material, which ensures both accurate positioning and reliable fastening, while preventing damage to the threaded structure of the temperature probe 4.

[0087] Therefore, by introducing the design of positioning base 13 and elastic buckle 14, the embodiments of this application can facilitate users to quickly install and remove temperature probe 4, improve work efficiency, and can be adapted to the installation connectors 5 of various specifications of temperature probe 4, which not only improves measurement accuracy and stability, but also significantly enhances operation convenience and compatibility.

[0088] In some embodiments, refer to Figures 4 to 6As shown, the positioning unit 7 further includes a positioning component, which includes multiple clamping pieces 16 arranged in a ring between the insertion rod 6 and the positioning hole 15. The multiple clamping pieces 16 can contract or expand radially along the insertion rod 6 to keep the insertion rod 6 aligned with the central axis of the positioning hole 15.

[0089] The clamping plates 16 can be arranged in three, four, or other evenly distributed rings to provide a balanced clamping force. The clamping plates 16 can be made of wear-resistant and elastic materials (such as metal or engineering plastics), providing sufficient support while allowing for flexible contraction or expansion when needed. Optionally, four clamping plates 16 are provided, and each clamping plate 16 is an arc-shaped metal sheet. The clamping plates 16 can contract or expand radially along the insertion rod 6, ensuring that the insertion rod 6 remains centered, avoiding measurement errors caused by tilting, and improving measurement accuracy.

[0090] In one example, the positioning assembly may further include a drive mechanism mounted on the positioning base 13. The drive mechanism includes a drive element 17, a cam (not shown in the figure), and a linkage mechanism (not shown in the figure). The drive element 17 can be a handle, a motor, etc., and is connected to the cam. The cam is connected to four clamping plates 16 via the linkage mechanism. When the cam rotates, the rotational motion is converted into synchronous radial movement of the four clamping plates 16 through the linkage mechanism. For example, when the cam rotates clockwise, it pushes the linkage mechanism, causing the four clamping plates 16 to retract inward, thus clamping the insertion rod 6; conversely, it releases the insertion rod 6.

[0091] In another example, such as Figure 6 As shown, the clamping piece 16 can be an elastic metal piece (such as a spring steel piece or an elastic alloy piece). The metal piece has a fixed end 18 and a free end 19. The fixed end 18 is fixed to the inner wall of the positioning hole 15, and the free end 19 is inclined towards the central axis of the positioning hole 15 (i.e., moving towards the center). The inclination angle can be between 10° and 30°. The free end 19 can be rounded to prevent scratching the surface of the insertion rod 6. The free ends 19 of the four metal pieces move towards the center to form an opening smaller than the diameter of the insertion rod 6. When the insertion rod 6 is inserted into this opening, it compresses the metal pieces to expand outward and undergoes elastic deformation. After insertion, due to the rebound force of the metal pieces, they always adhere tightly to the outer wall of the insertion rod 6, thereby applying a uniform radial clamping force to the insertion rod 6 to achieve adaptive centering clamping. When the insertion rod 6 is pulled out, the metal pieces return to their original state.

[0092] Therefore, compared with the above embodiments, the embodiments of this application do not require an external driving mechanism to achieve adaptive clamping and centering of the insertion rod 6, which is simple in structure and convenient in operation.

[0093] In some embodiments, refer to Figure 3 As shown, the other end of the insertion rod 6 away from the pressure detection unit 12 is provided with a ball handle 20, which makes it easy for users to push and pull the insertion rod 6 and improves the convenience of measurement.

[0094] The measurement method of the bearing temperature probe insertion depth measuring device provided in the embodiments of this application will be described below.

[0095] In some embodiments, refer to Figure 7 As shown in the embodiment of this application, the measurement method of the bearing temperature probe insertion depth measuring device includes: a first measurement stage, a second measurement stage, and a comparison stage.

[0096] In the first measurement stage, the mounting connector 5 is installed on the positioning unit 7, and the temperature probe 4 is arranged to extend along the axial direction of the insertion rod 6. The positioning unit 7 is moved so that the detection end 10 of the temperature probe 4 is flush with the end of the insertion rod 6 that contacts the bearing 1. The insertion depth of the temperature probe 4 is measured by the cooperation of the first detection element and the second detection element 9.

[0097] Specifically, the mounting connector 5 of the temperature probe 4 is threaded onto the elastic buckle 14, and the temperature probe 4 is arranged to extend axially along the insertion rod 6, parallel to the insertion rod 6. The positioning base 13 on the insertion rod 6 is moved so that the detection end 10 of the temperature probe 4 is flush with the end of the bushing 1 of the insertion rod 6. During the movement of the positioning base 13, the moving grid on the positioning base 13 moves relative to the fixed grid on the insertion rod 6. The distance from the positioning base 13 to the end of the insertion rod 6 is measured by using the relative displacement between the moving grid and the fixed grid. Since the temperature probe 4 is fixed to the elastic buckle 14 of the positioning base 13 through the mounting connector 5, and the detection end 10 of the temperature probe 4 is flush with the end of the insertion rod 6, the measured distance is the distance from the mounting connector 5 of the temperature probe 4 to the detection end 10, which is also the insertion depth of the temperature probe 4.

[0098] In the second measurement stage, the insertion rod 6 is inserted into the mounting hole 3, the positioning unit 7 is attached to the mounting hole 3, the insertion rod 6 is moved so that the insertion rod 6 contacts the bearing bush 1, and the depth of the mounting hole 3 is determined by the first detection element and the second detection element 9.

[0099] Specifically, insert the rod 6 into the mounting hole 3, and place the positioning base 13 flat above the mounting hole 3. Move the rod 6 using the ball handle 20 so that the end of the rod 6 contacts the bearing shell 1. As the rod 6 moves relative to the positioning base 13, the fixed grid on the rod 6 moves relative to the moving grid on the positioning base 13. Measure the distance from the positioning base 13 to the end of the rod 6 using the relative displacement between the moving grid and the fixed grid. Since the positioning base 13 overlaps the mounting hole 3 and the end of the rod 6 contacts the bearing shell 1, the measured distance is the distance from the mounting hole 3 to the bearing shell 1, which is also the depth of the mounting hole 3.

[0100] During the comparison phase, the processing unit 8 compares the insertion depth of the temperature probe 4 with the hole depth of the mounting hole 3 to determine whether the insertion depth of the temperature probe 4 meets the installation requirements.

[0101] Specifically, the controller compares and analyzes the insertion depth of temperature probe 4 with the depth of mounting hole 3. If the difference between the two values ​​is within a preset range, it indicates that the deviation is small and relatively close, meaning the insertion depth of temperature probe 4 meets the installation requirements, and temperature probe 4 can be installed on mounting hole 3 to stably measure the temperature of bearing bush 1. If the difference is not within the preset range, it indicates that the deviation is large, meaning the insertion depth of temperature probe 4 does not meet the installation requirements. It is understandable that since the mounting connector 5 of temperature probe 4 is a threaded connector, connected to the mounting hole 3 of bearing chamber 2, a certain amount of fine adjustment can be achieved by tightening the mounting connector 5 when the deviation is small, allowing temperature probe 4 to better contact the bearing bush 1 and achieve accurate temperature measurement. When the deviation is large, if the insertion depth is greater than the hole depth, the mounting connector 5 of temperature probe 4 is higher than the mounting hole 3 and cannot be installed, resulting in unstable temperature measurement; if the insertion depth is less than the hole depth, the detection end 10 of temperature probe 4 cannot contact the bearing bush 1, resulting in inaccurate temperature measurement. At this point, temperature probe 4 can be replaced, and the insertion depth of the replaced temperature probe 4 can be measured again and compared with the hole depth of the mounting hole 3 until the insertion depth of the replaced temperature probe 4 meets the installation requirements. Then, the temperature probe 4 that meets the installation requirements is inserted into the bearing chamber 2 to achieve stable and accurate measurement of the temperature of the bearing bush 1.

[0102] In summary, the bearing temperature probe insertion depth measuring device and method provided in this application can measure and compare the insertion depth of the temperature probe 4 and the hole depth of the mounting hole 3, ensuring that the insertion depth of the temperature probe 4 meets the installation requirements. This effectively prevents temperature measurement deviations caused by insufficient insertion depth of the temperature probe 4, proactively avoids equipment failure risks, and improves operational safety. This application can be applied to the temperature measurement of the bearing 1 in nuclear power units to ensure the safe operation of nuclear power units.

[0103] The above are merely preferred embodiments of this application and are not intended to limit the embodiments of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A device for measuring the insertion depth of a bearing shell temperature probe, wherein the bearing shell is disposed in a bearing chamber, the bearing chamber has a mounting hole, and the temperature probe has a mounting connector for inserting into the mounting hole, characterized in that, The bearing temperature probe insertion depth measuring device includes: A plug rod is used to insert into the mounting hole and contact the bearing bush; The positioning unit is axially movable on the insertion rod. The positioning unit is used to overlap the mounting hole, or the positioning unit is used to connect the mounting joint and arrange the temperature probe to extend along the axial direction of the insertion rod. The displacement measuring unit includes a first detection element and a second detection element. The first detection element is disposed on the insertion rod, and the second detection element is disposed on the positioning unit. It is used to measure the insertion depth of the temperature probe and the hole depth of the mounting hole. The processing unit is communicatively connected to the displacement measurement unit and is used to compare the insertion depth of the measured temperature probe with the depth of the mounting hole to determine whether the insertion depth of the temperature probe meets the installation requirements. The bearing temperature probe insertion depth measuring device also includes: A pressure detection unit is located at one end of the insertion rod that contacts the bearing bush and is communicatively connected to the processing unit. The pressure detection unit is used to detect the contact pressure of the insertion rod, and the processing unit is used to determine the hole depth of the mounting hole measured by the displacement measurement unit when the contact pressure reaches a first preset threshold.

2. The bearing temperature probe insertion depth measuring device according to claim 1, characterized in that, The processing unit includes: The controller is communicatively connected to the displacement measuring unit and the pressure detection unit. The display is communicatively connected to the controller.

3. The bearing temperature probe insertion depth measuring device according to claim 2, characterized in that, The processing unit further includes a prompting component, which is communicatively connected to the controller. The prompting component is used to issue a first prompt message when the contact pressure detected by the pressure detection unit reaches a first preset threshold in multiple consecutive preset sampling periods. The controller is used to determine the hole depth of the mounting hole measured by the displacement measurement unit.

4. The bearing temperature probe insertion depth measuring device according to claim 3, characterized in that, The prompting component is also used to issue a second prompting message when the contact pressure reaches a second preset threshold. Wherein, the second preset threshold is greater than the first preset threshold.

5. The bearing temperature probe insertion depth measuring device according to claim 1, characterized in that, The displacement measurement unit is a capacitive grating sensor, which includes a fixed grating and a moving grating. The first detection element is the fixed grating, and the second detection element is the moving grating. The fixed grating is communicatively connected to the processing unit.

6. The bearing temperature probe insertion depth measuring device according to any one of claims 1 to 5, characterized in that, The positioning unit includes: The positioning base has a positioning hole, through which the insertion rod passes; the positioning base is provided with the second detection element; An elastic buckle is provided on the positioning base for securing the mounting connector.

7. The bearing temperature probe insertion depth measuring device according to claim 6, characterized in that, The positioning unit further includes: The positioning assembly includes multiple clips arranged in a ring between the insertion rod and the positioning hole, and the multiple clips are capable of contracting or expanding radially along the insertion rod to keep the insertion rod aligned with the central axis of the positioning hole.

8. A method for measuring the insertion depth of a bearing temperature probe according to any one of claims 1 to 7, characterized in that, include: The measurement process consists of three phases: a first measurement phase, a second measurement phase, and a comparison phase. In the first measurement stage, the mounting connector is installed on the positioning unit, and the temperature probe is arranged to extend along the axial direction of the insertion rod. The positioning unit is moved so that the detection end of the temperature probe is flush with the end of the insertion rod that contacts the bearing. The insertion depth of the temperature probe is measured by the cooperation of the first detection element and the second detection element. In the second measurement stage, the insertion rod is inserted into the mounting hole, the positioning unit is attached to the mounting hole, the insertion rod is moved so that the insertion rod contacts the bearing bush, and the depth of the mounting hole is determined by the first detection element and the second detection element. During the comparison phase, the processing unit compares the insertion depth of the temperature probe with the depth of the mounting hole to determine whether the insertion depth of the temperature probe meets the installation requirements.

9. The measurement method of the bearing temperature probe insertion depth measuring device according to claim 8, characterized in that, Determining whether the insertion depth of the temperature probe meets the installation requirements includes: If the difference between the measured insertion depth of the temperature probe and the depth of the mounting hole is within a preset range, then the insertion depth of the temperature probe meets the installation requirements. If the difference between the measured insertion depth of the temperature probe and the depth of the mounting hole is not within the preset range, then the insertion depth of the temperature probe does not meet the installation requirements.

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