Pressure sensor for circuit breaker hydraulic mechanism

Abstract

According to the pressure sensor for the circuit breaker hydraulic mechanism, oil pressure is converted into electric signals in real time through the pressure sensor, the electric signals are converted into digital signals through the control panel to be displayed, the digital signals are transmitted to external equipment through the four-core aviation plug, and real-time monitoring and controlling of the oil pressure of the hydraulic mechanism are achieved; the real-time performance, the accuracy and the reliability of monitoring are improved; the device comprises a shell, a shell cover, a control panel, a pressure core assembly and a four-core aviation plug, the control panel is arranged in the shell, one side of the shell is connected with the pressure core assembly, the shell cover is arranged on the other side of the shell, one end of the four-core aviation plug is connected with the control panel, and the other end of the four-core aviation plug extends to the outer side of the shell cover; the pressure core assembly comprises a connector, a damper and a pressure sensor, the connector is used for being connected with a connector of equipment to be monitored, a long hole used for installing the damper is formed in the connector, the pressure sensor is welded to the inner side of the connector, and the pressure sensor is electrically connected with the control panel.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a pressure sensor for a hydraulic mechanism of a circuit breaker. Background Art

[0002] As a vital device in the power system, the stability and reliability of the circuit breaker's performance are directly related to the safe and stable operation of the power system. As an important part of the circuit breaker, the hydraulic mechanism undertakes the important task of providing insulation and arc extinguishing medium for the circuit breaker. The hydraulic mechanism realizes the opening and closing operation of the circuit breaker through the change of oil pressure. Its performance directly affects the action speed and accuracy of the circuit breaker. Therefore, the stability and accuracy of the oil pressure are crucial.

[0003] Too high or too low pressure in the hydraulic mechanism may cause the circuit breaker to malfunction. Too high pressure may cause damage to the mechanism or oil leakage, while too low pressure may cause the circuit breaker to fail to complete the opening and closing operations, or even cause failure. These abnormal conditions may pose a serious threat to the safe and stable operation of the power system.

[0004] Traditional circuit breaker hydraulic mechanisms are usually equipped with pressure gauges to monitor oil pressure. However, pressure gauges have obvious limitations.

[0005] 1. Unable to monitor remotely: The pressure gauge can only provide on-site readings and cannot transmit the pressure signal to the remote monitoring center in real time, which makes it impossible for staff to grasp the pressure status of the hydraulic mechanism at any time, which limits the timeliness and accuracy of monitoring.

[0006] 2. Inconvenient data recording: The pressure gauge requires manual reading on site and cannot automatically record pressure data. Manual recording by staff increases the workload and may also lead to data omissions or errors.

[0007] 3. Inaccurate data: Pressure gauges are easily affected by environmental factors such as vibration, temperature changes, etc., which may cause inaccurate readings.

[0008] Given the limitations of pressure gauges, the development of hydraulic mechanism pressure sensors has become the key to solving this problem. Pressure sensors can monitor the pressure changes of hydraulic mechanisms in real time and transmit data remotely to the monitoring center, allowing staff to grasp the operating status of the hydraulic mechanism at any time. In addition, pressure sensors have the advantages of high precision, high stability and strong anti-interference ability, and can provide more accurate and reliable pressure data display.

[0009] In summary, through the development and application of pressure sensors, the pressure status of hydraulic mechanisms can be monitored in real time, and the real-time, accuracy and reliability of monitoring can be improved, thereby effectively preventing the occurrence of faults and improving the overall operation level of the power system. Summary of the invention

[0010] The present invention aims to address the technical defects of the prior art and provide a pressure sensor for the hydraulic mechanism of a circuit breaker. The pressure sensor converts the oil pressure into an electrical signal in real time. The electrical signal is converted into a digital signal for display by a control panel and transmitted to an external device through a 4-core aviation plug, thereby realizing real-time monitoring and supervision of the oil pressure of the hydraulic mechanism, which can greatly improve the real-time, accuracy and reliability of the monitoring.

[0011] The present invention provides the following technical solution: a pressure sensor for a circuit breaker hydraulic mechanism, comprising a housing, a housing cover, a control board, a pressure core assembly and a 4-core aviation plug, wherein the control board is arranged in the housing, wherein one side of the housing is connected to the pressure core assembly, and the other side thereof is provided with a housing cover, and one end of the 4-core aviation plug is connected to the control board, and the other end thereof extends to the outside of the housing cover; The pressure core assembly includes a joint, a damper, and a pressure sensor. The joint is used to connect to the connection port of the monitored equipment. The joint is provided with a long hole for installing the damper. A pressure sensor is welded on the inner side of the joint. The pressure sensor is electrically connected to the control board.

[0012] Furthermore, An observation port is provided on the shell, and an observation window is bonded to the lower side of the observation port.

[0013] Furthermore, The joint includes a joint body and a nut. Two sealing ring grooves are arranged on the outer side where the joint body is connected to the outer shell. Sealing rings are arranged in the sealing ring grooves. Screw holes are arranged on both sides of the nut. Corresponding fixing holes are arranged on the outer shell corresponding to the screw holes. The screw holes and the fixing holes are fixed by screws.

[0014] Furthermore, The control board includes a microcontroller, a signal acquisition module, a communication module, a power module, a display module and a storage module. The output ends of the signal acquisition module and the power module are connected to the microcontroller, the output ends of the microcontroller are connected to the communication module and the display module, and the signal acquisition module is electrically connected to the pressure sensor.

[0015] Furthermore, The shell is connected to the shell cover by welding.

[0016] Furthermore, The control panel also includes a debugging module; the display module is plug-connected with the output end of the microcontroller via a display communication interface, and the display module is arranged on the lower side of the observation window.

[0017] Furthermore, The connector is set to M20*1.5.

[0018] Furthermore, The 4-core aviation plug is connected to a signal box on the device through a cable, and the cable includes 2 signal lines and 2 power lines.

[0019] Furthermore, The microcontroller is a processor of the STM32L051K8U6 model.

[0020] Furthermore, The pressure sensor has a measuring range of 0 to 60 MPa.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a pressure sensor for a circuit breaker hydraulic mechanism, which is a high-precision and high-efficiency monitoring device specially designed for the circuit breaker hydraulic mechanism to ensure real-time and accurate monitoring of its operating status; The pressure sensor is mainly composed of a shell, a shell cover, a control board, a pressure core assembly and a 4-core aviation plug. The shell and the shell cover protect the internal components to prevent the external environment from interfering with and damaging the sensor, and provide installation and fixing space for the internal components. The control board is installed in the shell and is the core control part of the sensor. It is responsible for receiving the pressure signal detected by the pressure sensor, processing and converting it, and then outputting the corresponding data signal through the 4-core aviation plug. The pressure core assembly is responsible for monitoring the pressure changes of the hydraulic mechanism, including the connector, damper and pressure sensor. The connector is used to connect with the connection port of the circuit breaker hydraulic mechanism to be monitored to ensure that the sensor can be accurately installed in the hydraulic system, so as to realize real-time monitoring of the hydraulic oil pressure. The damper is installed in the long hole in the connector. Its main function is to reduce the impact of the fluctuation of the hydraulic oil pressure on the pressure sensor, so that the sensor can detect the pressure change more stably and accurately, and improve the measurement accuracy and reliability. The pressure sensor is welded on the inner side of the connector and directly contacts with the hydraulic oil. It converts the pressure of the hydraulic oil into an electrical signal and transmits it to the control board through electrical connection. It uses high-precision sensing elements and can respond to pressure changes quickly and sensitively. One end of the 4-core aviation plug is connected to the control board, and the other end extends to the outside of the shell cover, which is used to realize the electrical connection between the sensor and the external equipment. Through the 4-core aviation plug, the sensor can transmit the detected pressure data to the monitoring system in the form of electrical signals, realizing remote monitoring and real-time monitoring of the pressure of the circuit breaker hydraulic mechanism; Based on the above structural characteristics, this device has the following advantages: 1. Improve real-time monitoring: Compared with traditional pressure gauges, this pressure sensor can transmit pressure data remotely in real time. Workers can obtain pressure information of the circuit breaker hydraulic mechanism in real time in the monitoring center without going to the site to read the data, and timely grasp the operating status of the equipment; 2. Enhanced monitoring accuracy: The setting of the damper effectively reduces the impact of pressure fluctuations on the measurement results, enabling the sensor to detect pressure changes more accurately and improving the accuracy of monitoring data. At the same time, the high-precision pressure sensor and the signal processing function of the control board further ensure the reliability of the data; 3. Improve reliability: Through real-time monitoring and remote monitoring, the staff can promptly discover abnormal conditions of the hydraulic mechanism pressure, such as excessive or low pressure, and take measures in advance to deal with them, avoiding circuit breaker failures caused by abnormal pressure, and improving the reliability and stability of circuit breaker operation; 4. Convenient maintenance and management: It can intuitively display the pressure readings, which is convenient for operators to check at any time. The remote transmission function of the sensor makes the maintenance and management of the circuit breaker hydraulic mechanism more convenient. The staff can reasonably arrange the maintenance plan according to the real-time monitoring data, realize preventive maintenance, reduce the equipment failure rate and maintenance cost, and extend the service life of the equipment; In summary, this pressure sensor for the circuit breaker hydraulic mechanism has the characteristics of real-time monitoring, electronic display, remote transmission, high accuracy and high reliability, and is an ideal choice for monitoring the circuit breaker hydraulic mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a three-dimensional structure of a specific embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the illustrated embodiment; Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure from another angle is shown; Figure 4 It is a control structure diagram of the present invention.

[0023] Description of reference numerals: 1. Shell; 2. Shell cover; 3. Observation window; 4. Control panel; 5. Pressure core assembly; 6. 4-core aviation plug; 101, fixing hole; 501, connector; 502, damper; 503, pressure sensor. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0025] like Figures 1 to 4 As shown, it shows a specific embodiment of the present invention: like Figures 1 to 4 As shown, a pressure sensor for a circuit breaker hydraulic mechanism disclosed in the present invention comprises a housing 1, a housing cover 2, a control board 4, a pressure core assembly 5 and a 4-core aviation plug 6, wherein the control board 4 is arranged in the housing 1, wherein one side of the housing is connected to the pressure core assembly 5, and the housing cover 2 is arranged on the other side thereof, and one end of the 4-core aviation plug 6 is connected to the control board 4, and the other end thereof extends to the outside of the housing cover 2; The pressure core assembly 5 includes a joint 501, a damper 502, and a pressure sensor 503. The joint 501 is used to connect to the connection port of the device to be monitored. A long hole for installing the damper 502 is provided on the joint 501. The pressure sensor 503 is welded on the inner side of the joint 501. The pressure sensor 503 is electrically connected to the control board 4.

[0026] Working principle: This device is designed to be installed on the connection port of the circuit breaker hydraulic mechanism to monitor its pressure status. It cleverly utilizes the original pressure gauge interface of the circuit breaker hydraulic mechanism and connects it by installing a three-way valve.

[0027] The three interfaces of the three-way valve serve the following functions respectively: one is to connect the original pressure gauge to retain the original pressure display function; the second is to connect the pressure sensor 503 designed specifically for the hydraulic mechanism of the circuit breaker; the third is to provide a detection port for possible additional detection or calibration needs.

[0028] During the installation process, this device ensures that the normal operation of the original equipment is not affected. When the circuit breaker hydraulic mechanism is working, the pressure of the hydraulic oil will act on the pressure sensor 503, causing the sensor to produce an electrical signal change proportional to the pressure. After receiving the electrical signal from the pressure sensor 503, the control board 4 processes and converts it, converts it into a standard output signal, and transmits the processed pressure signal to external monitoring equipment, such as the display screen and data acquisition system of the control center, through the 4-core aviation plug 6, to realize real-time electronic display and remote monitoring of the pressure of the hydraulic mechanism.

[0029] In summary, the device realizes real-time monitoring of the pressure of the circuit breaker hydraulic mechanism in a non-invasive manner, which not only retains the pressure gauge function of the original equipment, but also adds intelligent pressure monitoring means, providing a strong guarantee for the stable operation of the equipment.

[0030] Preferably, Figures 1 to 3 As shown, an observation port is provided on the housing 1, and an observation window 3 is bonded to the lower side of the observation port.

[0031] The observation port is provided and the observation window 3 is bonded to the lower side thereof. This detail further improves the practicality and convenience of the device. The observation window 3 is usually made of a transparent material to ensure good light transmittance so that the user can clearly see the situation in the observation port. At the same time, the bonding between the observation window 3 and the housing 1 should be firm and reliable to prevent it from falling off or being damaged during use.

[0032] Easy to monitor: The user can observe the pressure reading displayed electronically in real time and intuitively through the observation window 3 at the observation port on the housing 1. This design makes the on-site reading process extremely simple, and the current pressure state of the hydraulic mechanism can be quickly obtained. More importantly, when the traditional pressure gauge and this device are installed on site at the same time, dual protection monitoring can be achieved. As a traditional monitoring method, the pressure gauge has strong mechanical stability, while this device provides a more intelligent and high-precision monitoring method. Its electronic display method has higher accuracy and readability than the traditional mechanical pressure gauge. By comparing the pressure data provided by the two, the staff can further verify the accuracy of the data, discover and correct possible errors in time, and the dual monitoring mechanism enhances the reliability of monitoring.

[0033] In summary, the observation port opened on the housing 1 and the bonded observation window 3 provide a more intuitive, convenient and safe monitoring method for the pressure sensor 503 device, which helps to improve the overall performance of the device.

[0034] Preferably, Figure 2 As shown, the joint 501 includes a joint body and a nut. Two sealing ring grooves are arranged on the outer side where the joint body is connected to the outer shell 1. Sealing rings are arranged in the sealing ring grooves. Screw holes are arranged on both sides of the nut. Corresponding fixing holes 101 are arranged on the outer shell 1 corresponding to the screw holes. The screw holes are fixed to the fixing holes 101 by screws.

[0035] The connector 501 is a key component in the pressure sensor device, and is designed to ensure a stable connection with the housing 1 and provide good sealing performance to prevent hydraulic oil leakage. The connector 501 is mainly composed of a connector body and a nut, which work together to achieve the above functions.

[0036] The design of the connector body matches the pressure gauge interface of the circuit breaker hydraulic mechanism to ensure a tight connection between the two. Two sealing ring grooves are specially provided on the outer side where the connector body is connected to the housing 1. The design of these two grooves is very critical because they are used to accommodate the sealing rings, thereby forming an effective double-layer sealing structure to ensure that no hydraulic oil leakage occurs.

[0037] Screw holes are provided on both sides of the nut, and the nut is used to be sleeved on the housing 1. Generally, two symmetrical screw holes are provided and matched with the corresponding fixing holes 101 on the housing 1. During the installation process, the staff only needs to align the nut with the connector body and the housing 1, and then use the screws to pass through the screw holes and the fixing holes 101, and tighten them with appropriate tools to complete the installation. This connection method is not only simple and reliable, but also easy to disassemble and maintain.

[0038] In summary, the design of the connector 501 fully considers the stability of installation and sealing performance. Through the cooperation of the sealing ring groove and the sealing ring on the connector body, the screw hole on the nut and the fixing hole 101 on the housing 1, the connector 501 can be firmly fixed on the housing 1 and provide an effective sealing structure to prevent hydraulic oil leakage. This design not only ensures the reliable application of the pressure sensor 503 device on the circuit breaker hydraulic mechanism, but also improves the overall performance and safety of the equipment.

[0039] Preferably, Figure 4 As shown, the control board 4 includes a microcontroller, a signal acquisition module, a communication module, a power module, a display module and a storage module. The output ends of the signal acquisition module and the power module are connected to the microcontroller, the output ends of the microcontroller are connected to the communication module and the display module, and the signal acquisition module is electrically connected to the pressure sensor 503.

[0040] As the core component of the electronic device, the control board 4 integrates multiple key components such as a microcontroller, a signal acquisition module, a communication module, a power module, a display module and a storage module.

[0041] The microcontroller is the core of the control board 4 and is responsible for the logic operation and data processing of the entire system. It receives data from the signal acquisition module and processes and makes decisions according to a preset program or algorithm.

[0042] The signal acquisition module is responsible for collecting signals from external sensors, such as the signal output by the pressure sensor 503. After conditioning and conversion, these signals are transmitted to the microcontroller for processing.

[0043] In this embodiment, the signal acquisition module is electrically connected to the pressure sensor 503 for acquiring pressure data in real time.

[0044] Communication Module It is responsible for data communication between the control panel 4 and other devices or systems, and transmits the pressure data detected by the pressure sensor 503 to the monitoring system in the form of electrical signals.

[0045] Power Module Provides a stable power supply for all components on the control board 4. Includes power conversion circuit and power protection circuit to ensure the reliability and stability of the power supply. The output end of the power module is connected to the microcontroller to provide it with the power required for operation.

[0046] Display Module Used to display electronic readings of pressure, the device includes a display unit and a display driver circuit, which work together to convert the output signal of the microcontroller into an intuitive electronic display reading.

[0047] The display unit consists of 7 LEDs, which are usually arranged in seven segments and can display numbers 0-9 and some English letters and symbols. Each LED segment corresponds to a stroke of a number or character. By controlling different LED segments to light up or go out, the desired display content can be formed.

[0048] The display driver circuit is responsible for converting the output signal of the microcontroller into a signal that can drive the LED display unit. It receives digital signals from the microcontroller and controls the lighting and extinguishing of the LED segments according to these signals.

[0049] When the microcontroller receives the signals from the pressure sensor 503, it converts these signals into corresponding digital signals. Then, these digital signals are sent to the display driver circuit. The display driver circuit controls the LED segments of the seven-segment LED display unit to light up or go out according to the received signals, thereby displaying the electronic reading of the pressure.

[0050] Storage Module It is used to store programs, data or configuration information on the control board 4. The data of the storage module can be read and written by the microcontroller.

[0051] The output end of the signal acquisition module is connected to the input end of the microcontroller. In this way, the data collected by the signal acquisition module can be directly transmitted to the microcontroller for processing.

[0052] The output end of the power module is connected to the power input end of the microcontroller to provide a stable working power supply for the microcontroller to ensure its normal operation.

[0053] The output end of the microcontroller is connected to the input end of the communication module. The microcontroller transmits the processing result or instruction to the external device through the communication module.

[0054] The output end of the microcontroller is also connected to the input end of the display module, and the microcontroller transmits the displayed pressure signal to the display module for visual display.

[0055] The storage module is connected to the microcontroller via a data line. The microcontroller can perform read and write operations on the storage module to realize the data storage and reading functions.

[0056] In summary, the control board 4 realizes the functions of collecting, processing, communicating, displaying and storing external signals by integrating multiple key components and connecting them reasonably.

[0057] Preferably, the shell 1 is connected to the shell cover 2 by welding.

[0058] The welding connection between the shell 1 and the shell cover 2 is a common connection method. Welding connection is a reliable and efficient connection method, especially in application scenarios with strict requirements on strength and sealing. The welding quality and efficiency should be ensured in the present invention to achieve good strength and sealing.

[0059] The welding connection forms a continuous metal structure by melting the contact surface of the shell 1 and the shell cover 2 and solidifying it, thereby ensuring high strength of the connection part. This strength is usually better than other connection methods, such as threaded connection or snap connection.

[0060] Preferably, Figure 4 As shown, the control panel 4 also includes a debugging module; the display module is plug-connected to the output end of the microcontroller via a display communication interface, and the display module is arranged at the lower side of the observation window 3.

[0061] The control board 4 is responsible for receiving input signals, processing data and outputting control signals to drive other devices or components. Setting the debugging module is an important component of the control board 4. It is mainly used to debug and diagnose the control board 4 during the development, testing and maintenance stages. The debugging module usually includes the following functions: Code debugging: allows developers to connect a debugger to the control board 4 through the debug interface to view and modify the microcontroller's registers, memory, and program execution status in real time.

[0062] Real-time data monitoring: Various sensor data, input signals and output status on the control board 4 can be collected and displayed in real time, helping developers understand the operating status and performance of the system.

[0063] Troubleshooting: When a system failure occurs, the debugging module can provide detailed fault information and diagnostic reports to help developers quickly locate the problem and fix it.

[0064] The display module is an important component for displaying information on the control board 4. It is usually connected to the output end of the microcontroller through a display communication interface to achieve data transmission and display.

[0065] In order to ensure a stable connection between the display module and the microcontroller, a plug-in connection is usually used. This method is not only convenient for installation and removal, but also can reduce the number and complexity of connecting wires, and improve the reliability and maintainability of the system.

[0066] The viewing window 3 is provided so that the user can intuitively see the information displayed on the display module. The viewing window 3 is usually made of transparent materials, such as glass, plastic, etc., to ensure that the information is clearly visible. Therefore, the display module is provided at its lower side to ensure that the user can conveniently view and read the displayed information.

[0067] Through the above reasonable design and application, they can achieve precise control and monitoring of various equipment and systems, and improve the reliability and performance of the system.

[0068] Preferably, the connector 501 is configured as M20*1.5.

[0069] The specification of the connector 501 is M20*1.5, which is a standard thread interface specification widely used in various industrial equipment and systems. The main function of the connector 501 is to achieve the connection between the device and the hydraulic mechanism of the circuit breaker, so as to monitor the pressure change of the hydraulic mechanism in real time.

[0070] Matching with the connection port of the circuit breaker hydraulic mechanism: Interface specification matching: In order to ensure that the connector 501 can be closely matched with the connection port of the circuit breaker hydraulic mechanism, the connector 501 of this device adopts the same specification as the original pressure gauge interface of the circuit breaker hydraulic mechanism, that is, M20*1.5. This matching ensures the reliability and stability of the connection and avoids leakage or looseness caused by interface mismatch.

[0071] Connection method: In the actual installation process, we use the original pressure gauge interface of the circuit breaker hydraulic mechanism to connect the three-way valve to achieve the installation of this device. The three-way valve has two input ends and one output end, one of which is connected to the original pressure gauge, and the other is connected to the connector 501 of this device. In this way, the installation and real-time monitoring function of this device are realized without affecting the normal operation of the original equipment.

[0072] By connecting the connector 501 to the hydraulic mechanism of the circuit breaker, the device can monitor the pressure changes of the hydraulic mechanism in real time. When the pressure of the hydraulic mechanism is abnormal, the device can issue an alarm or take corresponding measures in time to avoid accidents. This real-time monitoring function not only improves the safety and reliability of the equipment, but also reduces maintenance costs and downtime.

[0073] In summary, the connector 501M20*1.5 specification plays an important role in the real-time monitoring device of the circuit breaker hydraulic mechanism. Through reasonable installation and configuration, this device can realize the real-time monitoring and early warning function of the pressure change of the circuit breaker hydraulic mechanism, providing a strong guarantee for the safe operation of the equipment.

[0074] Preferably, Figure 1 As shown, the 4-core aviation plug 6 is connected to the signal box on the device through a cable, and the cable includes 2 signal lines and 2 power lines.

[0075] The cable includes 2 signal wires and 2 power wires. These two types of wires have different functions in the cable: Signal lines are used to transmit communication signals or data between devices. They transmit digital or analog signals between devices.

[0076] Power cord: used to provide power to ensure the normal operation of the equipment. It usually has a large current carrying capacity to meet the power supply needs of the equipment. It transmits electrical energy from the power supply device to the power-consuming device.

[0077] The 4 pins of the 4-core aviation plug 6 are connected to the 2 signal wires and 2 power wires in the cable respectively. This connection ensures the reliability of power supply and signal transmission between devices.

[0078] In summary, the 4-core aviation plug 6 is connected to the signal box on the equipment through a cable, and the cable includes 2 signal lines and 2 power lines. The design has the advantages of high reliability, easy maintenance and flexibility.

[0079] Preferably, Figures 1 to 4 As shown, the microcontroller is a processor of the STM32L051K8U6 model.

[0080] The STM32L051K8U6 integrates a high-performance Arm Cortex-M0+ 32-bit RISC core operating at 32MHz.

[0081] This enables it to quickly process various complex computing tasks, ensure the real-time and accuracy of the hydraulic mechanism of outdoor circuit breakers, and has the characteristics of high performance and low energy consumption, making it suitable for various application scenarios that require high performance and low power consumption.

[0082] In summary, the application of STM32L051K8U6 in the hydraulic mechanism of outdoor circuit breakers has significant advantages. Its high performance, low power consumption, rich peripherals and interfaces, environmental adaptability, and easy development and maintenance make it an ideal choice in this field.

[0083] Preferably, the measurement range of the pressure sensor 503 is 0-60 MPa.

[0084] In the circuit breaker hydraulic mechanism, since the oil pressure is usually relatively large, it is very important to select a pressure sensor 503 with an appropriate range.

[0085] For the pressure sensor 503 with a measuring range of 0-60 MPa, a large range is selected to meet the demand for large pressure.

[0086] Selection of measuring range Adapt to high pressure environment: The circuit breaker hydraulic mechanism will generate high oil pressure during operation, so it is necessary to select a pressure sensor 503 that can withstand this high pressure environment. The measurement range of 0 to 60 MPa covers the oil pressure range that may be generated by the circuit breaker hydraulic mechanism, ensuring the accuracy and reliability of the measurement.

[0087] Avoid overload damage: If a pressure sensor 503 with too small a measuring range is selected, when the oil pressure exceeds the measuring range of the sensor, the sensor may be overloaded and damaged.

[0088] Therefore, choosing a sensor with a large range can avoid this situation and extend the service life of the sensor.

[0089] The model should be suitable for real-time monitoring, that is, in the hydraulic mechanism of the circuit breaker, real-time monitoring of oil pressure changes is crucial for the stable operation of the equipment. Therefore, it is necessary to select a pressure sensor 503 that can respond quickly and measure accurately.

[0090] In summary, it is necessary to select a large-range pressure sensor 503 with a measurement range of 0-60 MPa to meet the large pressure requirements of the circuit breaker hydraulic mechanism. This selection can ensure the accuracy and reliability of the measurement, improve the stability and safety of the equipment, and meet the needs of real-time monitoring and remote control.

[0091] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. These changes involve related technologies well known to those skilled in the art, which all fall within the scope of protection of the patent of the present invention.

[0092] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A pressure sensor for a circuit breaker hydraulic mechanism, characterized in that: It comprises a housing (1), a housing cover (2), a control panel (4), a pressure core assembly (5) and a four-core aviation plug (6), wherein the control panel (4) is arranged inside the housing (1), wherein one side of the housing is connected to the pressure core assembly (5), and the other side thereof is arranged with the housing cover (2), and one end of the four-core aviation plug (6) is connected to the control panel (4), and the other end thereof extends to the outside of the housing cover (2); The pressure core assembly (5) comprises a joint (501), a damper (502), and a pressure sensor (503); the joint (501) is used to connect to a connection port of a device to be monitored; a long hole for mounting the damper (502) is provided on the joint (501); a pressure sensor (503) is welded on the inner side of the joint (501); and the pressure sensor (503) is electrically connected to a control board (4).

2. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 1, characterized in that: An observation port is provided on the housing (1), and an observation window (3) is bonded to the lower side of the observation port.

3. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 2, characterized in that: The joint (501) comprises a joint body and a nut. Two sealing ring grooves are arranged on the outer side of the joint body where it is connected to the outer shell (1). Sealing rings are arranged in the sealing ring grooves. Screw holes are arranged on both sides of the nut. The outer shell (1) corresponding to the screw holes has corresponding fixing holes (101). The screw holes are fixed to the fixing holes (101) by screws.

4. A pressure sensor for a circuit breaker hydraulic mechanism according to any one of claims 1 to 3, characterized in that: The control panel (4) comprises a microcontroller, a signal acquisition module, a communication module, a power module, a display module and a storage module; the output ends of the signal acquisition module and the power module are connected to the microcontroller; the output ends of the microcontroller are connected to the communication module and the display module; and the signal acquisition module is electrically connected to the pressure sensor (503).

5. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 4, characterized in that: The shell (1) and the shell cover (2) are connected by welding.

6. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 5, characterized in that: The control panel (4) further comprises a debugging module; the display module is plug-connected to the output end of the microcontroller via a display communication interface, and the display module is arranged on the lower side of the observation window (3).

7. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 6, characterized in that: The connector (501) is configured as M20×1.5 mm.

8. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 7, characterized in that: The 4-core aviation plug (6) is connected to a signal box on the device via a cable, wherein the cable includes 2 signal wires and 2 power wires.

9. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 8, characterized in that: The microcontroller is a processor of the STM32L051K8U6 model.

10. A pressure sensor for a circuit breaker hydraulic mechanism according to claim 9, characterized in that: The pressure sensor (503) has a measurement range of 0 to 60 MPa.

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