A real-time online measurement system for the bottom pivot mushroom head of a miter gate

Abstract

The present invention relates to the technical field of monitoring of miter gates, and particularly relates to a real-time online measurement system for the bottom pivot mushroom head of a miter gate, comprising: a temperature sensor for monitoring the temperature change between the mushroom head and the bearing bush and transmitting the monitored temperature value to the upper computer monitoring system in real time; a contact displacement sensor for monitoring the relative distance change between the mushroom head and the bearing bush and transmitting the monitored distance value change to the upper computer monitoring system in real time to calculate the wear amount of the bearing bush; an upper computer monitoring system for storing big data and performing automatic analysis. If it is found that the temperature value changes abnormally during the operation of the gate, an automatic alarm is given and the operation of the gate is stopped; if it is found that the relative distance value decreases or exceeds the set value, an automatic alarm is given to remind the operation department to perform maintenance or replacement. The present invention effectively completes comprehensive monitoring of the bottom pivot, provides reliable data reference for the maintenance and repair of the bottom pivot, and can also avoid the occurrence of major accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring of miter gates, and particularly to a real-time online measurement system for the bottom pivot mushroom head of a miter gate. Background Art

[0002] The bottom pivot is an important component in a miter gate and is relatively complex. With the development of the water transportation industry, the number of times the lock is opened has increased, resulting in an increasing number of miter gates that fail due to wear of the bottom pivot, causing many inconveniences to water transportation. Therefore, it is particularly important to monitor the bottom pivot of the miter gate, but there is no precedent for monitoring the bottom pivot of in-service miter gates at present. Summary of the Invention

[0003] To solve the above problems, the present invention provides a real-time online measurement system for the bottom pivot mushroom head of a miter gate, which can, when the miter gate is operating, monitor in real time the wear amount of the bottom pivot bearing and the change in its temperature, and evaluate the operating condition of the bottom pivot according to the change in the wear amount and temperature.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A real-time online measurement system for the bottom pivot mushroom head of a miter gate, comprising:

[0006] A temperature sensor for monitoring the temperature change between the mushroom head and the bearing bush and transmitting the monitored temperature value to the upper computer monitoring system in real time;

[0007] A contact displacement sensor for monitoring the change in the relative distance between the mushroom head and the bearing bush and transmitting the monitored change in the distance value to the upper computer monitoring system in real time to calculate the wear amount of the bearing bush;

[0008] An upper computer monitoring system for storing big data and performing automatic analysis. If it is found that the temperature value changes abnormally during the operation of the gate, it will automatically alarm and stop the operation of the gate; if it is found that the relative distance value decreases or exceeds the set value, it will automatically alarm and remind the operation department to perform maintenance or replacement.

[0009] Further, the number of the temperature sensors is 3, one is arranged at the top of the bottom pivot bearing bush, one is arranged along the circumference on the inclined surface of the bearing bush, and one is arranged around the cylinder under the bottom pivot bearing bush.

[0010] Furthermore, a hole with a diameter of φ24 is left on the bottom pivot cover, and a sensor mounting hole with a diameter of φ6 and a thread with a diameter of φ12 are machined on the corresponding bottom pivot bearing bush (a thickness of 6 mm is left between the sensor mounting hole and the mushroom head) for installing a temperature sensor. At the same time, a sealed connecting rod is provided. One end of the connecting rod is threadedly connected to the bottom pivot bearing bush and sealed by a combined sealing ring. The other end of the connecting rod is connected to a steel wire mesh skeleton rubber hose through a combined sealing ring, and the steel wire mesh skeleton rubber hose is connected all the way to the water-intensive junction box to form a sealed chamber.

[0011] Furthermore, the temperature sensors are all connected to the water-intensive junction box through steel wire skeleton rubber hoses. The electric wires and cables of the sensors are all laid in the steel wire skeleton rubber hoses, go ashore through large-diameter watertight hoses, and are connected to the on-site monitoring cabinet. The large-diameter watertight hoses are made of special stainless steel bellows, which are both flexible and can protect the cables.

[0012] Furthermore, the number of the contact displacement sensors is 3. One is installed on the top of the bottom pivot bearing bush, one is installed on the inclined surface of the bearing bush along the circumferential direction, and one is installed around the cylinder under the bottom pivot bearing bush.

[0013] Furthermore, a hole with a diameter of φ24 is left on the bottom pivot cover, and a sensor mounting hole with a diameter of φ12 and a thread are machined on the corresponding bottom pivot bearing bush for installing a contact displacement sensor. At the same time, a sealed connecting rod is provided. The connecting rod is threadedly connected to the bottom pivot bearing bush and sealed with a hydraulic combined sealing ring. The other end of the connecting rod is connected to a steel wire mesh skeleton rubber hose through a combined sealing ring, and the steel wire mesh skeleton rubber hose is connected all the way to the water-intensive junction box to form a sealed chamber.

[0014] Furthermore, the contact displacement sensors are all connected to the water-intensive junction box through steel wire skeleton rubber hoses. The electric wires and cables of the contact displacement sensors are all laid in the steel wire skeleton rubber hoses, go ashore through large-diameter watertight hoses, and are connected to the on-site monitoring cabinet. The large-diameter watertight hoses are made of special stainless steel bellows.

[0015] The monitoring system of the present invention can, when the miter gate is in operation, monitor in real time the wear amount of the bottom pivot bearing and the change of its temperature, and evaluate the current operating condition of the bottom pivot according to the change of the wear amount and temperature, so as to effectively complete a comprehensive monitoring of the bottom pivot, provide reliable data reference for the maintenance and repair of the bottom pivot, and at the same time avoid the occurrence of major accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more obvious:

[0017] Figure 1This is the system block diagram of a real-time online measurement system for the bottom pivot mushroom head of a miter gate in an embodiment of the present invention.

[0018] Figure 2 This is the installation diagram of the temperature sensor in an embodiment of the present invention.

[0019] Figure 3 This is the installation diagram of the contact displacement sensor in an embodiment of the present invention.

[0020] Figure 4 This is the schematic diagram of the installation position of the temperature sensor in an embodiment of the present invention.

[0021] Figure 5 This is the status diagram of the contact displacement sensor.

[0022] Figure 6 This is the status diagram of the displacement sensor after the bottom pivot bearing bush is worn.

[0023] In the figure: 1 - hydraulic hose; 2 - combined sealing ring; 3 - bottom pivot top cover; 4 - connecting rod; 5 - mushroom head; 6 - bottom pivot bearing bush; 7 - temperature sensor; 8 - backing plate; 9 - base; 10 - contact displacement sensor; 11 - contact surface between the mushroom head and the bottom pivot bearing bush. Specific embodiments

[0024] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made. These all belong to the protection scope of the present invention.

[0025] As Figure 1 shown, a real-time online measurement system for the bottom pivot mushroom head of a miter gate includes a temperature sensor 7, a contact displacement sensor 10, and a host computer monitoring system. Specifically:

[0026] The bottom pivot bearing bush 6 and the mushroom head 5 are a pair of key friction pairs of the bottom pivot. Relative wear is inevitable, but the wear amount and wear pattern are very crucial for the normal use of the miter gate. Normal and abnormal wear are often accompanied by the generation of heat. The greater the heat generation, the higher the temperature of the contact surface between the bottom pivot bearing bush and the mushroom head, and the more serious the wear of the bottom pivot bearing bush. When the temperature is high, sintering between the bearing bush and the mushroom head will occur, seriously threatening the normal operation of the miter gate. Therefore, we arranged 3 temperature sensors 7 on the bottom pivot bearing bush of the miter gate. Among them, 1 temperature sensor is set at the top of the bottom pivot bearing bush 6, 1 temperature sensor is set along the circumference on the inclined surface of the bearing bush, and the other 1 temperature sensor is set around the cylinder under the bottom pivot bearing bush 6 to monitor the temperature change between the mushroom head 5 and the bottom pivot bearing bush 6, transmit the detected temperature value to the upper computer monitoring system in real time, store it in big data, and conduct automatic analysis. If it is found that the temperature value changes abnormally during the operation of the gate, the upper computer monitoring system will automatically alarm, stop the operation of the gate, avoid the occurrence of sintering between the bearing bush and the mushroom head, avoid the expansion of the fault, and enable the operation department to carry out maintenance or repair in advance to avoid the occurrence of greater accidents.

[0027] In this embodiment, a PT100 A-grade platinum resistance temperature sensor is selected. Its main parameters are as follows: graduation number: PT100; grade: A; temperature range: -50~200; wiring method: two-wire; probe material: stainless steel; as Figure 2 shown, a hole with a diameter of φ24 is left on the bottom pivot top cover 3, and a sensor installation hole with a diameter of φ6 and a thread with a diameter of φ12 (a thickness of 6 mm is left between the sensor installation hole and the mushroom head) are machined and installed on the corresponding bottom pivot bearing bush for installing the temperature sensor 7. At the same time, a sealed connecting rod 4 is set. One end of the connecting rod 4 is connected to the bottom pivot bearing bush through a thread and sealed by a combined sealing ring 2. The other end of the connecting rod 4 is connected to a steel wire mesh skeleton rubber tube through a combined sealing ring 2. The steel wire mesh skeleton rubber tube is connected to the water-intensive junction box to form a sealed chamber. The sealed chamber of the steel wire skeleton rubber tube can withstand the pressure of a water depth of 100 meters, thereby protecting the sensor and the cable from the influence of the deep water environment. The temperature sensors 7 are all connected to the water-intensive junction box through the steel wire skeleton rubber tube. The electric wires and cables of the contact displacement sensors are all laid in the steel wire skeleton rubber tube. After the electric wires and cables of all the contact displacement sensors are concentrated in the water-intensive junction box, they go ashore through a large-diameter watertight hose and are connected to the on-site monitoring cabinet. The large-diameter watertight hose is made of a special stainless steel bellows, which has both flexibility and can protect the cable. When replacing the displacement sensor, the steel wire skeleton hose can be removed to quickly replace the displacement sensor.

[0028] The bottom pivot bearing bush 6 and the mushroom head 5 are a pair of key friction pairs of the bottom pivot. Their relative wear is inevitable, but the amount of wear and the wear pattern are very crucial for the normal use of the miter gate. Therefore, we arranged 3 contact displacement sensors 10 on the bottom pivot bearing bush of the miter gate. As Figure 4 shown, 1 contact displacement sensor 10 is installed on the top of the bottom pivot bearing bush 6, 1 contact displacement sensor is installed along the circumferential direction on the inclined surface of the bearing bush, and 1 contact displacement sensor is installed around the cylinder under the bottom pivot bearing bush 6. By monitoring the change in the relative distance between the mushroom head and the bottom pivot bearing bush, the wear amount of the bearing bush is calculated, and the detected change in the distance value is transmitted to the upper computer monitoring system in real time for big data storage and calculation. If it is found that the relative distance value (decrease) exceeds the set value, the monitoring system will automatically alarm to remind the operation department to carry out maintenance or replacement to avoid the occurrence of a greater accident.

[0029] In this embodiment, the model of the contact displacement sensor is DNS-M10, measurement range: 10mm; resolution: 1 micron; measurement force: 5N; probe material: stainless steel; protection level: IP67. As Figure 3 shown, a hole with a diameter of φ24 is left on the bottom pivot top cover 3, and a sensor installation hole with a diameter of φ12 and a thread are machined and installed on the corresponding bottom pivot bearing bush for installing the contact displacement sensor. At the same time, a sealed connecting rod 4 is set. The connecting rod 4 is connected to the bottom pivot bearing bush by a thread and sealed with a hydraulic combined seal ring 2. The other end of the connecting rod 4 is connected to a steel wire skeleton rubber tube through the combined seal ring 2, and the steel wire skeleton rubber tube is connected to the water-intensive junction box all the way to form a sealed chamber; the contact displacement sensors are all connected to the water-intensive junction box through the steel wire skeleton rubber tube, and the electrical wires and cables of the contact displacement sensors are all laid in the steel wire skeleton rubber tube. After all the electrical wires and cables of the contact displacement sensors are concentrated in the water-intensive junction box, they go ashore through a large-diameter watertight hose and are connected to the on-site monitoring cabinet. The large-diameter watertight hose is made of a special stainless steel bellows, which has both flexibility and can protect the cable. When replacing the displacement sensor, the steel wire skeleton hose can be removed to quickly replace the displacement sensor.

[0030] As Figure 5 and Figure 6 shown, first, the thickness of the bottom pivot bearing bush is 90mm when it is not worn, and the state of the contact displacement sensor is as Figure 5 . When the bottom pivot bearing bush is worn, the state of the displacement sensor is as Figure 6 shown. The current thickness of the bottom pivot bearing bush is the original thickness of the bottom pivot bearing bush minus the minimum value of the change in the displacement sensor.

[0031] The upper computer monitoring system includes a signal acquisition terminal, a remote monitoring terminal and a software system. Among them, the signal acquisition terminal includes a temperature signal acquisition card, a bottom pivot wear amount signal acquisition card, a switch and an industrial computer. The model of the temperature signal acquisition card is SL-GBD3818-6, the model of the bottom pivot wear amount signal acquisition card is SL-GBD3818-7, the model of the switch is the industrial-grade switch TPLINK, and the model of the industrial computer is IPC-610MB, 19 inches, 4U, with an i5 processor, 8G of RAM and a 2T hard disk; the remote monitoring terminal includes a server, which is used to aggregate the optical fibers of the signal acquisition terminal to the server and perform feature extraction using the programmed software system; a monitoring terminal, which is used to display the operating status of the door structure and the bottom pivot bearing in real time; the software system is used to realize data acquisition, analysis, storage management and health monitoring, etc.

[0032] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A real-time online measurement system for the mushroom head of the bottom pivot of a miter gate, characterized by: include: The temperature sensor is used to monitor the temperature change between the mushroom head and the bearing, and transmit the monitored temperature value to the upper computer monitoring system in real time; the number of the temperature sensors is 3, 1 is set on the top of the bottom pivot bearing, 1 is set on the inclined surface of the bearing along the circumferential direction, and 1 is set around the cylinder below the bottom pivot bearing; The contact displacement sensor is used to monitor the relative distance change between the mushroom head and the bearing, and transmit the monitored distance value change to the upper computer monitoring system in real time to calculate the wear amount of the bearing; the number of the contact displacement sensors is 3, one is installed on the top of the bottom pivot bearing, one is installed on the inclined surface of the bearing along the circumferential direction, and one is installed around the cylinder below the bottom pivot bearing; The host computer monitoring system is used to store big data and perform automatic analysis. If the temperature value changes abnormally during gate operation, it will automatically alarm and stop the gate operation. If the relative distance value decreases or exceeds the set value, it will automatically alarm and remind the operation department to carry out maintenance or replacement. A ￠24 hole is left on the top cover of the bottom pivot, and a ￠6 sensor installation hole and a ￠12 thread are processed and installed on the corresponding bottom pivot bearing shell to install the temperature sensor. At the same time, a sealed connecting rod is provided, and one end of the connecting rod is connected to the bottom pivot bearing shell through a threaded connection and sealed by a combined sealing ring. The other end of the connecting rod is connected to a steel mesh skeleton rubber tube through a combined sealing ring, and the steel mesh skeleton rubber tube is connected to a water-tight wire box to form a sealed chamber; The temperature sensors are all connected to the watertight junction box through steel wire skeleton rubber tubes. The wires and cables of the sensors are laid in the steel wire skeleton rubber tubes, and then go ashore through large-diameter watertight hoses and connect to the on-site monitoring cabinet. The large-diameter watertight hoses are made of special stainless steel bellows.

2. A real-time online measurement system for the mushroom head of the bottom pivot of a miter gate as claimed in claim 1, characterized in that: A ￠24 hole is left on the top cover of the bottom pivot, and a ￠12 sensor mounting hole and thread are processed and installed on the corresponding bottom pivot bearing shell to install the contact displacement sensor. At the same time, a sealed connecting rod is set. The connecting rod and the bottom pivot bearing shell are connected by threads and sealed with a hydraulic combination sealing ring. The other end of the connecting rod is connected to the steel wire skeleton rubber tube through the combination sealing ring, and the steel wire skeleton rubber tube is connected to the water-tight junction box to form a sealed chamber.

3. A real-time online measurement system for the mushroom head of the bottom pivot of a miter gate as claimed in claim 1, characterized in that: The contact displacement sensors are all connected to the watertight junction box through a steel wire skeleton rubber tube. The wires and cables of the contact displacement sensors are laid in the steel wire skeleton rubber tube, and then go ashore through a large-diameter watertight hose and connect to the on-site monitoring cabinet. The large-diameter watertight hose is made of specially made stainless steel bellows.

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