A downhole motor fault monitoring device

Abstract

The utility model relates to motor fault monitoring technical field, and disclose a kind of underground motor fault monitoring device, comprising: base, the left and right sides of base are obliquely provided with connecting plate, connecting plate is fixedly connected with base by bolt, multiple fixed plates are arranged on the upper portion of connecting plate, the front and rear sides of base are all provided with quadrilateral vertical plate, quadrilateral vertical plate is fixedly connected with base by connecting piece and bolt, the top central portion of base is provided with host computer, the top of host computer is provided with protection frame, spring detection component and phonograph pick sensor are arranged in protection frame, spring detection component and phonograph pick sensor are electrically connected with host computer, the upper portion of protection frame is provided with protective cover;Through host computer cooperation spring detection component and phonograph pick sensor gather motor vibration data, reduce the risk of downhole operation, fast response motor anomaly, reduce downtime loss, prolong the life of monitoring device.

Description

Technical Field

[0001] This utility model relates to the field of motor fault monitoring technology, specifically to a downhole motor fault monitoring device. Background Technology

[0002] In underground operations such as mining, motors are core power equipment, and their operational stability directly determines underground production efficiency and operational safety. The underground environment is characterized by high vibration, high dust levels, and large humidity fluctuations. Motors operating under these conditions for extended periods are prone to abnormal vibrations due to issues such as bearing wear, rotor imbalance, and winding faults. Failure to monitor and address these issues promptly can lead to anything from motor shutdowns for repairs to equipment damage, production interruptions, and even safety accidents. Therefore, real-time and reliable fault monitoring of underground motors is crucial.

[0003] Currently, various motor fault monitoring devices have emerged in the industry. For example, Chinese patent CN222481519U discloses a motor fault monitoring device that uses sprockets and chains to drive multiple screws to rotate synchronously, and then a second bevel gear drives a first bevel gear to cooperate with the screws to adjust the monitoring components. However, this type of gear-driven monitoring structure has certain drawbacks: The continuous vibrations generated by the operation of the underground motor and underground work directly affect the gear meshing parts, causing vibration damage problems such as wear on the gear teeth, jamming between teeth, and even tooth breakage. The reliability of gear transmission depends on precise meshing clearance and a stable transmission environment. However, high-frequency, multi-directional vibrations underground can disrupt this stable condition, not only causing a decrease in transmission accuracy, leading to malfunctions in monitoring components and data acquisition deviations, but also potentially causing the monitoring device itself to malfunction due to gear damage, resulting in the loss of effective monitoring capabilities for the motor's operating status. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a downhole motor fault monitoring device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A downhole motor fault monitoring device includes: a base, connecting plates inclined on the left and right sides of the base, the connecting plates being fixedly connected to the base by bolts, multiple layers of fixing plates on the upper part of the connecting plates, quadrilateral vertical plates on the front and rear sides of the base, the quadrilateral vertical plates being fixedly connected to the base by connectors and bolts, a main unit at the top center of the base, a protective frame on the top of the main unit, a spring detection component and a tuning fork sensor inside the protective frame, the spring detection component and the tuning fork sensor being electrically connected to the main unit, and a protective cover on the upper part of the protective frame; The base has bolt through holes at its four corners for mounting the base to the top of the motor. The spring detection assembly and tuning fork sensor are used to detect the vibration amplitude of the motor. The main unit is used to record the vibration amplitude data of the motor and send it to an external host.

[0006] Preferably, the protective cover has a circular through hole at the top, and a protective cover is provided on the circular through hole. The circular through hole is used for the extension of the tuning fork in the tuning fork sensor, and the protective cover is used to protect the tuning fork sensor when closed and to help the tuning fork release energy when open.

[0007] Preferably, the protective cover is provided with connecting blocks on both the left and right sides of its bottom, and the connecting blocks are used to be bolted to the connecting plates and fixing plates on the left and right sides.

[0008] Preferably, the spring detection assembly includes a conical helical spring, and an amplitude sensor is disposed inside the conical helical spring. The amplitude sensor is used to monitor the vibration frequency and vibration amplitude of the conical helical spring.

[0009] Compared with the prior art, this utility model provides a downhole motor fault monitoring device, which has the following beneficial effects: As the core control and data processing unit of the device, the main unit can receive motor vibration data collected by the spring detection component and tuning fork sensor in real time, and accurately record key parameters such as vibration amplitude and frequency, avoiding misjudgments of faults due to data loss or delay. Furthermore, the main unit can promptly transmit the collected monitoring data to an external host, enabling remote real-time monitoring of the underground motor's operating status. This allows personnel to monitor the motor's condition without descending into the mine, reducing the risks of underground operations and enabling rapid response to abnormal motor vibrations, saving valuable time for troubleshooting and repair, and effectively reducing downtime losses. Simultaneously, the main unit is positioned at the top center of the base, and with the protective structure of the protective frame and cover, it prevents direct corrosion from underground dust and moisture, ensuring long-term stable operation and extending the device's service life.

[0010] The conical helical spring in the spring detection assembly has excellent elastic buffering performance, which can adapt to the vibration characteristics of the downhole motor, reduce the impact of external high-frequency interference on monitoring, and keep the amplitude sensor in a stable monitoring state. The tuning fork sensor has extremely high vibration sensitivity and can capture the subtle vibration anomalies of the motor. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side perspective view of the present invention. Figure 3 This is a three-dimensional structural diagram of the motor in this utility model; Figure 4This is a schematic diagram of the exploded three-dimensional structure of this utility model.

[0012] The components include: 1. Base; 101. Connector; 201. Connecting plate; 202. Fixing plate; 3. Protective cover; 301. Protective cover; 401. Spring detection assembly; 4011. Conical helical spring; 402. Tuning fork sensor; 403. Protective frame; 404. Quadrilateral vertical plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] See attached document Figures 1-4 As shown, this embodiment of a downhole motor fault monitoring device includes a base 1. The base 1 has bolt through holes at its four corners. These bolt through holes are used to stably install the base 1 onto the top of the downhole motor using bolts. This adapts to the installation requirements of different motor models, and the bolt connection method facilitates the disassembly and maintenance of the device.

[0015] Connecting plates 201 are inclinedly arranged on the left and right sides of the base 1. The connecting plates 201 are fixedly connected to the base 1 by bolts. The inclined structure not only enhances the connection stability between the connecting plates 201 and the base 1, but also provides a reasonable support angle for the subsequent installation of the protective cover. Multiple fixing plates 202 are arranged on the upper part of the connecting plates 201. The multi-layer design allows for flexible selection of connection positions according to the installation height of the protective cover 3, improving the adaptability of the device installation.

[0016] Quadrilateral vertical plates 404 are provided on both the front and rear sides of the base 1. The quadrilateral vertical plates 404 are fixedly connected to the base 1 by connectors 101 and bolts. Connectors 101 can increase the contact area between the quadrilateral vertical plates 404 and the base 1. Combined with bolt connection, the overall structural strength of the base 1 is further enhanced, and the deformation of the base 1 caused by the vibration of the underground motor is prevented.

[0017] The main unit 4 is fixedly installed at the top center of the base 1. The main unit 4 serves as the core control unit of the device, used to receive, record vibration data, and transmit it to an external host. The top of the main unit 4 is covered with a protective frame 403. A spring detection component 401 and a tuning fork sensor 402 are fixedly installed inside the protective frame 403. Both the spring detection component 401 and the tuning fork sensor 402 are electrically connected to the main unit 4 via wires. The spring detection component 401 includes a conical helical spring 4011, which integrates an amplitude sensor to monitor the frequency and amplitude generated by the spring as the motor vibrates. The tuning fork sensor 402 is used to capture subtle abnormal vibrations of the motor. The two work together to achieve comprehensive monitoring of motor vibration.

[0018] The upper part of the protective frame 403 is covered by a protective cover 3. The bottom left and right sides of the protective cover 3 are integrally formed with connecting blocks. The connecting blocks are fixedly connected to the connecting plates 201 and fixing plates 202 on the left and right sides by bolts to ensure that the protective cover 3 tightly covers the protective frame 403. The top of the protective cover 3 has a circular through hole, and a protective cover 301 is hinged to the circular through hole. The circular through hole allows the tuning fork part of the tuning fork sensor 402 to extend out to contact the motor vibration source. When the protective cover 301 is closed, it can block the through hole to prevent dust and moisture from entering the protective frame 403. When it is open, it can avoid the tuning fork vibration being blocked and affecting the energy release, thus ensuring the monitoring sensitivity.

[0019] In some examples, the host 4 integrates a wireless transmission module that connects to an external host. Compared to traditional wired transmission, the wireless transmission module eliminates the limitations of complex underground wiring, avoids data transmission interruptions caused by cable breakage due to vibration or wear, and ensures real-time and stable uploading of motor vibration data.

[0020] The working principle of this utility model is as follows: When using this downhole motor fault monitoring device, the first step is to complete the fixed installation of the device according to the model and installation location of the downhole motor: Secure the base 1 to the top of the motor using bolts through the four corner bolt holes, ensuring the base 1 is in close contact with the motor surface; then check the inclined connecting plates 201 on the left and right sides of the base 1. Since the connecting plates 201 are fixed to the base 1 with bolts, and there are multiple fixing plates 202 on the upper part, select the appropriate fixing plate 202 position according to the installation height of the protective cover 3. Then, fix the connecting blocks on the left and right sides of the bottom of the protective cover 3 to the connecting plates 201 and fixing plates 202 with bolts. At the same time, confirm that the quadrilateral vertical plates 404 on the front and rear sides of the base 1 are fixed to the base 1 with bolts through the connectors 101. The coordinated support of the connecting plates 201 and the quadrilateral vertical plates 404 ensures the stability of the entire device in the downhole vibration environment, preventing the monitoring accuracy from being affected by device displacement.

[0021] After the device is installed, the preparation stage before monitoring begins. The protective cover 301 on the circular through hole at the top of the protective cover 3 is opened, allowing the tuning fork part of the tuning fork sensor 402 inside the protective frame 403 to extend through the circular through hole, ensuring that the tuning fork can directly contact the motor surface to capture vibration signals. At the same time, the electrical connection status between the main unit 4 and the spring detection component 401 and the tuning fork sensor 402 is checked to ensure that the signal transmission path is unobstructed. The protective frame 403 covers the top of the main unit 4, which can initially block the intrusion of dust and moisture from the well, providing basic protection for the internal spring detection component 401 and tuning fork sensor 402. At this time, the device is ready for monitoring.

[0022] Once the downhole motor starts operating, the device enters the core monitoring phase. The vibrations generated by the motor are synchronously transmitted to the base 1, which in turn affects the spring detection assembly 401 and tuning fork sensor 402 within the protective frame 403. The conical helical spring 4011 in the spring detection assembly 401, with its excellent elastic buffering performance, can adapt to the vibration characteristics of the motor, reducing high-frequency interference from other equipment vibrations downhole. This ensures that the amplitude sensor integrated within the conical helical spring 4011 remains in a stable monitoring state, capturing in real time the frequency and amplitude changes of the conical helical spring 4011 as it vibrates with the motor, and accurately converting them into vibration electrical signals. Simultaneously, the tuning fork sensor 402, with its extremely high vibration sensitivity, can quickly detect subtle vibration anomalies in the motor, such as early bearing wear or small vibrations caused by slight rotor imbalance, also converting these subtle vibrations into electrical signals.

[0023] The vibration signals generated by the two types of sensors are transmitted in real time to the host 4 at the top center of the base 1. As the core control and data processing unit of the device, the host receives and records the key parameters such as vibration amplitude and frequency transmitted by the two types of sensors immediately. The internal data processing module filters the valid data to avoid misjudgment of faults due to signal interference or transmission delay. Then, the host sends the processed monitoring data to the external host in a timely manner through the preset communication module to realize remote real-time monitoring of the underground motor's operating status. The staff can intuitively grasp the motor's operating condition through the external host without going down into the mine. If the monitoring data shows that the motor's vibration amplitude and frequency exceed the normal threshold, the staff can respond quickly, buy time for fault diagnosis and repair, and effectively reduce motor downtime losses.

[0024] During the monitoring process, the protective structure of the device will continue to function: the combination of the protective cover 3 and the protective frame 403 can block most of the downhole dust and moisture from directly eroding the main unit 4, the spring detection component 401 and the tuning fork sensor 402; if the motor stops running or the device needs to stop monitoring, the protective cover 301 on the top of the protective cover 3 can be closed. On the one hand, it can protect the tuning fork part of the tuning fork sensor 402 from dust pollution or physical impact damage, and on the other hand, it can prevent moisture from entering the interior of the protective frame 403 through the circular through hole when idle.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A downhole motor fault monitoring apparatus, characterized by, include: The base (1) has connecting plates (201) inclined on the left and right sides. The connecting plates (201) are fixed to the base (1) by bolts. The upper part of the connecting plates (201) has multiple layers of fixing plates (202). The front and rear sides of the base (1) are provided with quadrilateral vertical plates (404). The quadrilateral vertical plates (404) are fixed to the base (1) by connectors (101) and bolts. The main unit (4) is provided at the center of the top of the base (1). The top of the main unit (4) is provided with a protective frame (403). The protective frame (403) is provided with a spring detection assembly (401) and a tuning fork sensor (402). The spring detection assembly (401) and the tuning fork sensor (402) are electrically connected to the main unit (4). The upper part of the protective frame (403) is provided with a protective cover (3). The base (1) has bolt through holes at its four corners. The bolt through holes are used to install the base (1) onto the top of the motor. The spring detection assembly (401) and the tuning fork sensor (402) are used to detect the vibration amplitude of the motor. The host (4) is used to record the vibration amplitude data of the motor and send it to an external host.

2. A downhole motor failure monitoring apparatus as defined in claim 1, wherein, The protective cover (3) has a circular through hole at the top, and a protective cover (301) is provided on the circular through hole. The circular through hole is used for the extension of the tuning fork in the tuning fork sensor (402). The protective cover (301) is used to protect the tuning fork sensor (402) when closed and to help the tuning fork release energy when opened.

3. The downhole motor fault monitoring device according to claim 2, characterized in that, The protective cover (3) has connecting blocks on both the left and right sides at the bottom. The connecting blocks are used to connect and fix the connecting plates (201) and fixing plates (202) on the left and right sides with bolts.

4. The downhole motor fault monitoring device according to claim 1, characterized in that, The spring detection assembly (401) includes a conical helical spring (4011), and an amplitude sensor is provided inside the conical helical spring (4011). The amplitude sensor is used to monitor the vibration frequency and vibration amplitude of the conical helical spring (4011).

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