Monitoring device for capsule type oil conservator of oil-immersed transformer

Abstract

The invention provides a monitoring device for a capsule type oil conservator of an oil-immersed transformer, which comprises an equipment end connecting flange, a body and a respirator connecting flange, the device end connecting flange is connected with the respirator connecting flange through the body, the device end connecting flange is fixedly connected with a device to be monitored, the respirator connecting flange is fixedly connected with a respirator of a transformer, the body is arranged between the respirator and the device to be monitored, and the body is connected with the respirator connecting flange. The body is used for monitoring airflow parameters between a to-be-monitored equipment end and the respirator and judging whether the breathing system of the transformer is normal or not according to the monitored airflow parameters. Whether the function of the respiratory system is normal or not is judged by monitoring the airflow change in the respiratory pipeline, faults are prevented, and equipment safety is guaranteed; the problems of respirator blockage, capsule damage, abnormal pressure change in the transformer and the like can be found in time, an operator is reminded to take corresponding measures through an alarm, and safe operation of the transformer is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring capsule oil conservators for oil-immersed transformers, and in particular to a monitoring device for capsule oil conservators for oil-immersed transformers. Background Art

[0002] The breathing system of the capsule oil conservator of oil-immersed transformer is an important part to ensure the normal operation of the transformer. At present, it is difficult to monitor the breathing pipeline of the transformer, and it is impossible to determine whether the breathing system of the capsule oil conservator is functioning normally. In order to timely detect the failure of the breathing system of the capsule oil conservator and prevent the transformer from causing false signals due to blockage of the breathing channel or excessive oil spraying due to internal pressure of the transformer, an online monitor is needed to determine whether the breathing system is functioning normally. Summary of the invention

[0003] The purpose of the present invention is to provide a monitoring device for an oil-immersed transformer to solve the technical problem of how to monitor the airflow changes in the breathing duct to determine whether the respiratory system functions normally.

[0004] On the one hand, a monitoring device for an oil-immersed transformer capsule oil storage cabinet is provided, comprising:

[0005] Equipment end connection flange, body and respirator connection flange;

[0006] The device-end connecting flange is connected to the respirator connecting flange through the main body, the device-end connecting flange is connected and fixed to the device to be monitored, the respirator connecting flange is connected and fixed to the respirator of the transformer, the main body is arranged between the respirator and the device to be monitored, and the main body is used to monitor the airflow parameters between the device to be monitored and the respirator, and judge whether the respiratory system of the transformer is normal according to the monitored airflow parameters.

[0007] Preferably, the body comprises an upper connecting flange, a clamp, a shell, and a lower connecting flange;

[0008] The upper connecting flange is arranged at the top end of the shell, the lower connecting flange is arranged at the bottom end of the shell, and the clamp is wrapped around the outside of the shell to fix the shell.

[0009] Preferably, an alarm light, a rain cover and a display are arranged in the shell. The rain cover is arranged on the clamp and covers the display to protect the display. The alarm light is arranged on the top of the rain cover.

[0010] Preferably, an energy storage unit and a solar energy storage panel are also provided in the housing, the energy storage unit is electrically connected to the solar energy storage panel, the solar energy storage panel is used to provide electrical energy to the energy storage unit, and the energy storage unit supplies power to the monitoring alarm light and the display.

[0011] Preferably, a data acquisition module and an airflow sensor are also provided in the body. The airflow sensor is provided in the body and between the respirator and the breathing duct of the transformer. The data acquisition module reads the signal output by the sensor from the airflow sensor and converts it into a digital signal for processing.

[0012] Preferably, the airflow sensor is a hot film airflow sensor, in which a hot film is heated by electric current, and when airflow passes through, the difference in the temperature drop of the hot film is measured and the corresponding airflow velocity is determined based on the difference.

[0013] Preferably, a data processing and analysis module is also provided in the body for performing real-time processing and analysis on the signals and data output by the data acquisition module to obtain airflow parameters, which at least include the changing trend, amplitude and frequency of the airflow velocity.

[0014] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0015] The monitoring device for oil-immersed transformers provided by the present invention determines whether the respiratory system functions normally by monitoring the changes in airflow in the breathing duct, thereby preventing failures and ensuring equipment safety; it can promptly detect problems such as respirator blockage, capsule damage, and abnormal changes in transformer internal pressure, and remind operators to take corresponding measures through alarms to ensure safe operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 Schematic diagram of a monitoring device for an oil-immersed transformer in an embodiment of the present invention.

[0018] Figure 2 Schematic diagram of the main body in the embodiment of the present invention.

[0019] Figure 3 Schematic diagram of the main body in the embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the main body in the embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 FIG. 1 is a schematic diagram of an embodiment of a monitoring device for an oil-immersed transformer provided by the present invention. In this embodiment, the device includes:

[0023] Equipment-end connecting flange 1, main body 2 and respirator connecting flange 3; the equipment-end connecting flange 1 is connected to the respirator connecting flange 3 through the main body 2, the equipment-end connecting flange 1 is connected and fixed to the equipment to be monitored, the respirator connecting flange 3 is connected and fixed to the respirator of the transformer, the main body 2 is arranged between the respirator and the equipment to be monitored, the main body 2 is used to monitor the airflow parameters between the equipment to be monitored and the respirator, and judge whether the breathing system of the transformer is normal according to the monitored airflow parameters.

[0024] In one embodiment, if Figure 2 , Figure 3 and Figure 4 As shown, the body 2 includes an upper connecting flange 11, a clamp 12, a shell 13, and a lower connecting flange 14; the upper connecting flange 11 is arranged at the top of the shell 13, the lower connecting flange 14 is arranged at the bottom of the shell 13, and the clamp 12 is wrapped around the outside of the shell 13 to fix the shell 13. An alarm light 15, a rain cover 17, and a display 18 are arranged in the shell 13. The rain cover 17 is arranged on the clamp 12 and covers the display 18 to protect the display 18. The alarm light 15 is arranged at the top of the rain cover 17. An energy storage unit and a solar energy storage panel 16 are also arranged in the shell 13. The energy storage unit is electrically connected to the solar energy storage panel 16. The solar energy storage panel 16 is used to provide electric energy to the energy storage unit, and the energy storage unit supplies power to the monitoring alarm light 15 and the display 18. The data can be displayed on the display 18, and the setting of the rain cover 17 can protect the display 18, and can also play a light-shielding effect, which is convenient for staff to observe. In addition, in this embodiment, the monitoring device body 2 also includes a power supply for power supply, and the power supply is electrically connected to the solar panel. In normal operation, the power supply supplies power to the monitoring device body 2, and the solar panel charges the power supply.

[0025] In one embodiment, a data acquisition module and an airflow sensor are also provided in the body 2. The airflow sensor is provided in the body 2 and is located between the respirator and the breathing duct of the transformer. The data acquisition module reads the signal output by the sensor from the airflow sensor and converts it into a digital signal for processing. Wherein, the airflow sensor is a hot film airflow sensor. The hot film provided in the airflow sensor is heated by electric current. When the airflow passes through, the difference in the temperature drop of the hot film is measured and the corresponding airflow velocity is determined according to the difference. The airflow velocity sensor determines whether the function of the capsule oil storage cabinet breathing system is normal by measuring the airflow velocity in the breathing duct. When the airflow velocity is abnormal, the system will alarm and record relevant data for subsequent analysis. The relevant data is the velocity of the flow velocity. The data acquisition module is responsible for reading the signal output by the sensor from the airflow sensor and converting it into a digital signal for processing. The data processing and analysis module processes and analyzes the collected data in real time, including monitoring and calculating the change trend, amplitude and frequency of the airflow velocity.

[0026] The airflow velocity sensor is installed between the respirator and the breathing duct, and determines the state of the respiratory system by measuring the velocity of the airflow. The sensor can adopt a hot film airflow sensor or other suitable airflow measurement technology. Specifically, in this embodiment, the airflow velocity sensor is a hot film airflow sensor. The hot film in the sensor is heated by electric current. When the airflow passes through, it will take away heat, causing the temperature of the diaphragm to drop. The sensor measures the degree of the temperature drop of the diaphragm, thereby inferring the flow rate of the airflow. If the respirator channel is unobstructed, the airflow velocity is normal; when blockage or damage occurs, the airflow velocity decreases or changes significantly.

[0027] In some extended embodiments, in addition to the hot film sensor, other airflow measurement principles may be used, such as ultrasonic sensors, differential pressure sensors, etc. These sensors can calculate the flow rate of the airflow by measuring the pressure difference of the airflow, the sound wave propagation time or other related parameters.

[0028] When the system detects blockage of the respirator, damage to the capsule, or abnormal changes in the internal pressure (oil level) of the transformer, the system will trigger an alarm. The alarm module can use sound alarms, light alarms, or remote notifications to allow operators to take appropriate measures in a timely manner.

[0029] In one embodiment, a data processing and analysis module is further provided in the main body 2 for performing real-time processing and analysis on the signals and data output by the data acquisition module to obtain airflow parameters, which at least include the changing trend, amplitude and frequency of the airflow velocity.

[0030] In a specific embodiment, the following situations will occur during the monitoring process: Monitoring of respirator blockage: By monitoring the airflow velocity, when the respirator is blocked, the airflow velocity will be significantly reduced or stop flowing, and the system will trigger an alarm after detecting the abnormality. Detecting capsule damage: Capsule damage may cause airflow leakage or blockage. By monitoring the airflow velocity, when the airflow velocity abnormally increases or changes significantly, the system will trigger an alarm. Monitoring abnormal changes in transformer internal pressure (oil level): Abnormal changes in transformer internal pressure may be caused by a respiratory system failure. By monitoring the airflow velocity, when the airflow velocity is related to abnormal changes in transformer internal pressure (oil level), the system will trigger an alarm.

[0031] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0032] The monitoring device for oil-immersed transformers provided by the present invention determines whether the respiratory system functions normally by monitoring the changes in airflow in the breathing duct, thereby preventing failures and ensuring equipment safety; it can promptly detect problems such as respirator blockage, capsule damage, and abnormal changes in transformer internal pressure, and remind operators to take corresponding measures through alarms to ensure safe operation of the transformer.

[0033] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A monitoring device for capsule oil storage cabinet of oil-immersed transformer, characterized in that: include: Equipment end connection flange, body and respirator connection flange; The device-end connecting flange is connected to the respirator connecting flange through the main body, the device-end connecting flange is connected and fixed to the device to be monitored, the respirator connecting flange is connected and fixed to the respirator of the transformer, the main body is arranged between the respirator and the device to be monitored, and the main body is used to monitor the airflow parameters between the device to be monitored and the respirator, and judge whether the respiratory system of the transformer is normal according to the monitored airflow parameters.

2. The monitoring device according to claim 1, characterized in that: The body comprises an upper connecting flange, a clamp, a shell, and a lower connecting flange; The upper connecting flange is arranged at the top end of the shell, the lower connecting flange is arranged at the bottom end of the shell, and the clamp is wrapped around the outside of the shell to fix the shell.

3. The monitoring device according to claim 2, characterized in that: An alarm light, a rain cover and a display are arranged in the shell. The rain cover is arranged on the clamp and covers the display to protect the display. The alarm light is arranged on the top of the rain cover.

4. The monitoring device according to claim 3, characterized in that: An energy storage unit and a solar energy storage panel are also provided in the shell. The energy storage unit is electrically connected to the solar energy storage panel. The solar energy storage panel is used to provide electrical energy to the energy storage unit. The energy storage unit supplies power to the monitoring alarm light and the display.

5. The monitoring device according to claim 4, characterized in that: A data acquisition module and an airflow sensor are also arranged in the body. The airflow sensor is arranged in the body and between the respirator and the breathing duct of the transformer. The data acquisition module reads the signal output by the sensor from the airflow sensor and converts it into a digital signal for processing.

6. The monitoring device according to claim 5, characterized in that: The airflow sensor is a hot film airflow sensor. The hot film arranged in the airflow sensor is heated by electric current. When airflow passes through, the difference of the temperature drop of the hot film is measured and the corresponding airflow velocity is determined according to the difference.

7. The monitoring device according to claim 6, characterized in that: The body is also provided with a data processing and analysis module for processing and analyzing the signals and data output by the data acquisition module in real time to obtain airflow parameters, which at least include the change trend, amplitude and frequency of the airflow velocity.

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