Oil level digital meter recording and collecting device

Abstract

The utility model provides an oil level digital meter recording and collecting device which comprises a stainless steel electric box, a voltmeter, an ampere meter and a remote terminal. The voltmeter and the ampere meter are electrically connected with an oil level sensor in the oil-immersed transformer respectively; a voltmeter accommodating groove and an ampere meter accommodating groove are formed in the stainless steel electric box; the voltmeter accommodating groove and the ampere meter accommodating groove are respectively used for accommodating a voltmeter and an ampere meter; the voltmeter accommodating groove and the ampere meter accommodating groove are also respectively provided with a first waterproof glass cover and a second waterproof glass cover which are respectively covered on the voltmeter and the ampere meter; the voltmeter and the ampere meter transmit voltage signals and current signals to a remote terminal through 485 interface conversion. According to the technical scheme, the oil level in the oil-immersed transformer can be visible and can be remotely monitored at the same time.

Description

Technical Field

[0001] This utility model relates to the field of oil level monitoring technology for oil-immersed transformers, and in particular to a digital oil level recording and collection device. Background Technology

[0002] Current oil-immersed transformers are filled with transformer oil, which is connected to an oil conservator via pipes. The oil temperature varies within a certain range depending on changes in ambient temperature and transformer load, causing the oil volume to change accordingly. Routinely, the oil level is checked by observing the level gauge installed on the conservator. Transformer oil temperature and level are crucial parameters reflecting the transformer's operating status. Issues such as a stuck level gauge, false readings, or excessively low or high levels will affect the transformer's normal operation. Traditional oil-immersed transformers (using the UFZ-52 type magnetic float level gauge sensor) require manual observation of the level gauge, which is cumbersome and inconvenient. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a digital oil level recording and collection device to realize the visualization of the oil level inside the oil-immersed transformer and to enable simultaneous remote monitoring.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a digital oil level recording and collection device, comprising a stainless steel electrical box, a voltmeter, an ammeter, a waterproof glass cover, and a remote terminal; the voltmeter and ammeter are electrically connected to the oil level sensor inside the oil-immersed transformer; the stainless steel electrical box is provided with a voltmeter receiving slot and an ammeter receiving slot; the voltmeter receiving slot and the ammeter receiving slot are respectively used to accommodate the voltmeter and the ammeter; the voltmeter receiving slot and the ammeter receiving slot are also respectively provided with a first waterproof glass cover and a second waterproof glass cover, respectively covering the voltmeter and the ammeter; the voltmeter and the ammeter transmit voltage and current signals to the remote terminal through a 485 interface conversion.

[0005] In a preferred embodiment, a fixing magnetic ring is further included, which is fixed to the outside of the oil-immersed transformer by magnetic attraction.

[0006] In a preferred embodiment, there is a start button and a stop button.

[0007] In a preferred embodiment, the system further includes a switching power supply connected to the positive and negative terminals of the voltmeter and ammeter.

[0008] In a preferred embodiment, the oil level sensor includes a sensor variable resistor; the voltmeter and ammeter are connected to the variable resistor; changes in the oil level cause changes in the resistance of the sensor variable resistor, which in turn causes changes in the values ​​of the voltmeter and ammeter.

[0009] In a preferred embodiment, the start button is connected to a start indicator light; the stop button is connected to a stop indicator light.

[0010] Compared with existing technologies, this invention has the following advantages: It solves the problem of manually observing changes in the oil level gauge of a traditional oil-immersed transformer (UFZ-52 type magnetic float level gauge sensor). This solution converts the oil level into digital data. Based on the current collected by the oil level sensor, the current is read, converted using a digital 485 interface, and transmitted to a remote location for storage and analysis. This device completes the reading of the current signal between the oil-immersed transformer and the remote data center, converting it into a digital signal and transmitting it to the central computer room via a digital 485 interface. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the oil level digital meter collection device according to a preferred embodiment of the present invention;

[0012] Figure 2 This is a front view of the oil level digital meter collection device according to a preferred embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram showing the connection relationship between the voltmeter, ammeter, power switch and sensor in a preferred embodiment of the present invention.

[0014] Figure 4 This is a schematic diagram showing the pin connections of the voltmeter, ammeter, and sensor in a preferred embodiment of this utility model.

[0015] Figure 5 This is a schematic diagram showing the connection relationship between the start button, start indicator light, stop button, and stop indicator light in a preferred embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] Oil level digital metering and collection device, reference Figure 1-5 The system includes a stainless steel electrical box 1, a voltmeter 3, an ammeter 2, and a remote terminal. The voltmeter and ammeter are electrically connected to an oil level sensor inside the oil-immersed transformer. The stainless steel electrical box is equipped with voltmeter and ammeter housings, respectively, for housing the voltmeter and ammeter. Each housing is also equipped with a first waterproof glass cover and a second waterproof glass cover 6, respectively, covering the voltmeter and ammeter for waterproofing and visibility. The ammeter 2's current line is connected for monitoring current, and the voltmeter 3's current line is connected for monitoring voltage changes. The voltmeter and ammeter transmit voltage and current signals to the remote terminal via a 485 interface.

[0020] In this embodiment, a fixing magnetic ring 7 is also included, which is fixed to the outside of the oil-immersed transformer by magnetic attraction.

[0021] In this embodiment, there are a start button 5 and a stop button 4. Turning on the start button 5 initiates current acquisition and conversion into a digital signal. When not in use, turning on the stop button 4 shuts down the oil level digital metering and collection device.

[0022] In this embodiment, a switching power supply is also included, which is connected to the positive and negative terminals of the voltmeter 3 and the ammeter 2.

[0023] In this embodiment, the oil level sensor includes a sensor variable resistor; the voltmeter 3 and the ammeter 2 are connected to the variable resistor; changes in the oil level cause changes in the resistance value of the sensor variable resistor, which in turn causes changes in the values ​​of the voltmeter 3 and the ammeter 2.

[0024] In this embodiment, the start button 5 is connected to a start indicator light, which is specifically a green LED light; the stop button 4 is connected to a stop indicator light, which is specifically a red LED light.

[0025] The ammeter is specifically an mA ammeter: it is used to collect the transformer oil conservator current signal, convert the current signal into a digital signal, and send it through a 485 interface. It also provides a digital current display for easy remote monitoring and reading.

[0026] The voltmeter is specifically a 0-24V voltmeter: used to monitor the voltage inside the digital metering device. When the voltage is in an abnormal state, it will transmit the information to the 485 interface for remote alarm.

[0027] The device simultaneously transmits data collected by voltmeter 3 and ammeter 2 for comparison, analyzing and eliminating any incorrect data to verify their accuracy. Both ammeter 3 and voltmeter 2 are made of non-reflective material for waterproofing while maintaining transparency for visual reading. Flexible installation utilizes a strong magnetic ring 7 for hole-free fixing, reducing labor intensity during construction.

Claims

1. An oil level digital dial collection device, characterized by, The utility model relates to a remote terminal, voltage table, ammeter and stainless steel electric box, voltage table and ammeter are electrically connected with oil level sensor in oil immersed transformer respectively, voltage table and ammeter are used for voltage and current signal transmission to remote terminal through 485 interface conversion, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first waterproof glass cover and second waterproof glass cover, voltage table and ammeter are respectively covered with first 2. The oil level digital dial decal collection device of claim 1, wherein, ​ 3. The oil level digital dial decal collection device of claim 1, wherein, ​ 4. The oil level digital dipstick collection device of claim 1, wherein, ​ 5. The oil level digital dipstick collection device of claim 1, wherein, ​ 6. The oil level digital dipstick collection apparatus of claim 3, wherein, ​

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