A portable foldable oil tank oil level detection control system for transformer and method thereof

Abstract

The present invention discloses a portable foldable oil tank oil level detection control system for transformers and a method thereof, the control system comprising: an oil level monitoring unit, used to monitor the liquid level data information of the insulating oil in the oil tank in real time; an online detector, connected to the oil tank, used to receive and display the liquid level data information of each oil tank, and process and analyze the liquid level data information, and control the opening or closing of the oil tank according to a control instruction; and a host computer, connected to the online detector, used to receive and store the liquid level data information, and send a first control instruction to the online detector. The portable foldable oil tank oil level detection control system for transformers of the present invention and a method thereof can automatically monitor the oil level in each transformer oil tank in real time, is easy to use, saves effort in real time, improves the management and efficiency and use efficiency of transformer oil tanks at each site, and also brings great convenience to the user, and has good promotion and application value.

Description

Technical Field

[0001] The invention relates to the technical field of oil level detection, and in particular to an oil level detection control system and method for a portable foldable oil tank for a transformer. Background Art

[0002] Transformers are devices that use the principle of electromagnetic induction to change AC voltage. According to different cooling methods, they can be divided into dry-type transformers, oil-immersed transformers, fluoride transformers and other categories. Oil-immersed transformers use oil to achieve cooling, insulation and other functions. If the oil level is too low, the transformer leads or core will be exposed to the air, causing internal flashover hazards. In addition, due to the increase in the contact area between the oil and the air, the insulation of the transformer oil will drop rapidly. Therefore, it is necessary to use transformer oil storage tanks to regularly replenish the transformer with insulating oil. Transformer oil storage tanks are classified according to the type of insulating oil, generally including new transformer insulating oil, used transformer insulating oil and recycled transformer insulating oil. Different types of insulating oil are stored in different oil storage tanks. Different oil storage tanks are selected according to the needs of the transformer to replenish the transformer with oil.

[0003] The traditional method of transformer oil replenishment is to use manual means to replenish oil through the transformer oil storage tank. Due to operator errors, it often causes over-oil replenishment and oil leakage. At the same time, by simply calculating the amount of oil replenishment, the change in the volume of the transformer insulating oil caused by the temperature difference is ignored, which often causes inaccurate calculation results, and then causes the defects of too little or too much insulating oil replenishment.

[0004] In addition, the existing transformer oil storage tank management is chaotic, and it is impossible to monitor the oil level in each transformer oil storage tank in real time. It needs to be measured manually one by one before it can be distributed to the next user. It is also impossible to quickly measure the level of recycled waste insulating oil to calculate the corresponding benefits. The operation is cumbersome, time-consuming and labor-intensive, resulting in low efficiency of transformer oil storage tanks and great inconvenience to users. Therefore, it is necessary to improve the existing operation and management mode of transformer oil storage tanks. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the above-mentioned defects in the prior art, a portable foldable oil tank oil level detection control system for a transformer and a method thereof are proposed.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The first aspect of the present invention is to provide a portable foldable oil tank oil level detection control system for a transformer, comprising:

[0008] An oil level monitoring unit, which is arranged on the portable foldable oil tank and is used to monitor the liquid level data information of the transformer insulating oil in the portable foldable oil tank in real time;

[0009] an online detector connected to the portable foldable oil tank, for receiving and displaying liquid level data information of each portable foldable oil tank, processing and analyzing the liquid level data information, and controlling the opening or closing of the portable foldable oil tank according to a control instruction; and

[0010] The host computer is connected to the online detector and is used for receiving and storing the liquid level data information and sending a first control instruction to the online detector.

[0011] Furthermore, in the portable foldable oil tank oil level detection and control system for transformer, the online detector comprises:

[0012] A single-chip microcomputer (Mega48 single-chip microcomputer), which is connected to the portable foldable oil tank and the host computer through a first communication unit and a second communication unit, respectively, and is used to process and analyze the received liquid level data information, and send the processed analysis data information to the host computer;

[0013] A display unit connected to the single chip computer and used for displaying the liquid level data information and the analysis data information;

[0014] A key unit, connected to the single chip microcomputer and used for inputting a second control instruction to the single chip microcomputer;

[0015] A relay output unit is connected to the single chip microcomputer and is used to control the opening or closing of the solenoid valve of the portable foldable oil tank according to the first control instruction or the second control instruction.

[0016] Further preferably, in the portable foldable oil tank oil level detection and control system for transformer, the online detector further includes:

[0017] an indicating unit connected to the single chip microcomputer and configured to issue an alarm when the liquid level data exceeds a preset threshold; and

[0018] A power supply unit is connected to the single chip microcomputer and is used to supply power to the online detector.

[0019] Further preferably, in the portable foldable oil tank oil level detection and control system for the transformer, the single chip microcomputer is a Mega48 single chip microcomputer.

[0020] Further preferably, in the oil level detection and control system of the portable foldable oil tank for the transformer, the first communication unit and the second communication unit adopt a 485 wireless communication module.

[0021] Furthermore, in the oil level detection and control system of the portable foldable oil tank for transformer, the portable foldable oil tank comprises:

[0022] The tank body is a foldable structure made of soft material and is used to store insulating oil for transformers;

[0023] The solenoid valve is arranged at the oil inlet and the oil outlet of the tank body and is wirelessly connected to the relay output unit for executing the control instruction.

[0024] Furthermore, in the oil level detection and control system for the portable foldable oil tank for the transformer, the oil level monitoring unit comprises:

[0025] A liquid level sensor, which is arranged on the tank body and is used to monitor the liquid level data information of the transformer insulating oil in the tank body in real time; and

[0026] A microprocessor is connected to the A / D converter and is used to send the liquid level data information of the digital signal to the online detector.

[0027] Furthermore, in the oil level detection and control system for the portable foldable oil tank for the transformer, the oil level monitoring unit further includes:

[0028] An I / V converter connected to the liquid level sensor and used to convert the liquid level data information from a current signal to a voltage signal;

[0029] The A / D converter is connected to the I / V converter and is used to convert the liquid level data information from a voltage signal into a digital signal.

[0030] Furthermore, in the portable foldable oil tank oil level detection and control system for transformer, it also includes:

[0031] An intelligent terminal, which is wirelessly connected to the host computer by scanning the QR code information on the portable foldable oil tank;

[0032] The intelligent terminal is used to obtain the liquid level data information, to collect the portable foldable oil tank, and to send a request instruction to the host computer, and the host computer generates the control instruction according to the request information.

[0033] The second aspect of the present invention is to provide a method for detecting and controlling the oil level of a portable foldable oil tank for a transformer as described in the system, comprising:

[0034] The oil level monitoring unit collects the liquid level data information of the portable foldable oil tank and sends the liquid level data information to the online detector;

[0035] The online detector receives the liquid level data information, controls the electromagnetic valve of the portable foldable oil tank to open or close according to the liquid level data information, and simultaneously sends the liquid level data information to the host computer;

[0036] The host computer sends a control instruction to the online detector according to the liquid level data information and the request information;

[0037] The intelligent terminal scans the QR code information on the portable foldable oil tank to wirelessly connect to the host computer, and after obtaining the liquid level data information, sends the request instruction to the host computer.

[0038] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art:

[0039] (1) A liquid level sensor is used to monitor the liquid level data information in the portable folding oil tank in real time, and the liquid level data information is sent to the online detector. The staff can remotely and automatically obtain the liquid level status of the oil tank through the online detector, so that the staff can grasp the oil level status of the oil tank in real time, eliminating the human resource consumption of manual inspection. In addition, the oil level status monitoring results are accurate and reliable, ensuring the normal oil replenishment of the transformer; it overcomes the situation that traditional manual detection is prone to "missed detection" and "false detection" that affect the normal use of the oil tank, and realizes reliable, safe and real-time monitoring of the oil level status of the oil tank;

[0040] (2) The liquid level data information is analyzed and processed through the online detector, and the liquid level data information and the processed analysis results are displayed in real time on the display unit, which is convenient for monitoring and conducive to timely detection and prevention of oil level abnormalities; and the opening and closing of the solenoid valve on the oil storage tank can be remotely controlled through the key unit and relay output unit, thereby realizing flexible control of the transformer oil replenishment operation;

[0041] (3) The liquid level data information is transmitted and stored in the host computer through RS485 bus communication, and the usage data of each portable folding oil tank is recorded, which is convenient for checking the usage record of the oil tank later, solving the defect that the existing oil tank cannot record the usage;

[0042] (4) The smart terminal is used to scan the QR code information on the portable folding oil tank, so as to wirelessly connect to the host computer, obtain the liquid level status of the insulating oil in the oil tank and the oil tank, and can also send a request to drain the oil to the host computer through the smart terminal. The host computer generates a control instruction according to the request information, and then controls the solenoid valve on the oil tank to open through the online detector to replenish the transformer, thus realizing the full automation of the use of the oil tank;

[0043] (5) The portable foldable oil tank adopts a polyurethane soft oil tank, which can be folded to less than 6% of the total volume in the empty state, saving space and facilitating storage. It has the characteristics of small size, light weight, easy transportation and handling, and has strong oil resistance, sealing performance, anti-UV and anti-aging performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the overall framework of a portable foldable oil tank oil level detection control system for a transformer of the present invention;

[0045] Figure 2 This is a schematic diagram of the framework of an online monitor in an oil level detection and control system of a portable foldable oil tank for a transformer according to the present invention;

[0046] Figure 3 This is a schematic diagram of the framework of an oil level monitoring unit in an oil level detection and control system for a portable foldable oil tank for a transformer according to the present invention;

[0047] Figure 4 This is a schematic diagram of the framework of the host computer and the intelligent terminal in a portable foldable oil tank oil level detection control system for a transformer of the present invention;

[0048] Figure 5 The present invention is a schematic diagram of the framework of an oil level detection and control method of a portable foldable oil tank for a transformer. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0050] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0051] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0052] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0053] The present invention provides a portable folding oil tank oil level detection control system for transformers and a method thereof, which is used for storage, emergency repair and online oil level monitoring and control of finished oil for transformers; it is also a multifunctional storage data collector which can be used to collect various types of parameters such as oil level, oil temperature, oil pressure, etc. of oil storage tanks.

[0054] Figure 1This is an overall framework schematic diagram of an oil level detection and control system for a portable foldable oil tank for a transformer according to an embodiment of the present application, which mainly includes: an oil level monitoring unit, which is arranged on a portable foldable oil tank and is used to monitor the liquid level data information of the transformer insulating oil in the portable foldable oil tank in real time; an online detector, connected to the portable foldable oil tank, and is used to receive and display the liquid level data information of each portable foldable oil tank, and to process and analyze the liquid level data information, and to control the opening or closing of the portable foldable oil tank according to a control instruction; and a host computer, connected to the online detector, and is used to receive and store the liquid level data information, and to send a first control instruction to the online detector. The detection and control system uses a liquid level sensor to monitor the liquid level data information in the portable folding oil tank in real time, and sends the liquid level data information to the online detector. The staff can remotely and automatically obtain the liquid level status of the oil tank through the online detector, so that the staff can grasp the oil level status of the oil tank in real time, eliminating the human resource consumption of manual inspections, and the oil level status monitoring results are accurate and reliable, ensuring the normal oil replenishment work of the transformer; it overcomes the traditional manual detection that is prone to "missed detection" and "false detection" that affect the normal use of the oil tank, and realizes reliable, safe and real-time monitoring of the oil level status of the oil tank.

[0055] In some embodiments, Figure 2 This is a schematic diagram of the framework of an online detector in an oil level detection control system of a portable foldable oil tank for a transformer according to an embodiment of the present application. The online detector includes: a single-chip microcomputer, a display unit, a key unit and a relay output unit. The single-chip microcomputer is connected to the portable foldable oil tank and the host computer through a first communication unit and a second communication unit, respectively, for processing and analyzing the received liquid level data information, and sending the processed analysis data information to the host computer. The display unit is connected to the single-chip microcomputer for displaying the liquid level data information and the analysis data information. The key unit is connected to the single-chip microcomputer for inputting a second control instruction to the single-chip microcomputer. The relay output unit is connected to the single-chip microcomputer for controlling the opening or closing of the electromagnetic valve of the portable foldable oil tank according to the first control instruction or the second control instruction. The liquid level data information is analyzed and processed by the online detector, and the liquid level data information and the processed analysis results are displayed in real time on the display unit, which is convenient for monitoring and conducive to timely detection and prevention of oil level abnormalities; and the opening and closing of the electromagnetic valve on the oil storage tank can be remotely controlled through the key unit and the relay output unit, thereby realizing flexible control of the transformer oil replenishment operation.

[0056] In one embodiment, Figure 2This is a schematic diagram of the framework of an online detector in a portable foldable oil tank oil level detection control system for a transformer according to an embodiment of the present application. The online detector also includes: an indication unit connected to the single-chip microcomputer for issuing an alarm when the liquid level data exceeds a preset threshold; and a power supply unit connected to the single-chip microcomputer for supplying power to the online detector.

[0057] In one embodiment, Figure 2 The schematic diagram of the framework of the online detector in the portable folding oil tank oil level detection control system for transformers. The single chip microcomputer is a Mega48 single chip microcomputer. That is, the single chip microcomputer of the online monitor uses the 485 module as the medium, and transmits data with the host computer through Modbus bus communication, and the host computer is a PC host. The first communication unit and the second communication unit use the 485 wireless communication module, and the 485 wireless communication module is used for data exchange between the online detector, the host computer and the oil level monitoring unit.

[0058] In one embodiment, the portable foldable oil tank comprises a tank body and solenoid valves disposed at the oil inlet and the oil outlet of the tank body. The tank body is a foldable structure made of soft material and is used to store insulating oil for transformers; the solenoid valves are disposed at the oil inlet and the oil outlet of the tank body and are wirelessly connected to the relay output unit to execute the control instructions.

[0059] In one embodiment, the soft tank body of the portable folding oil tank is mainly formed by bonding coated fabrics, and the performance of the coated fabrics basically determines the performance of the soft tank body. Both polyester fiber and nylon fiber are suitable for producing polyurethane coated fabrics. Due to the poor adhesion of polyester fiber, nylon fiber is usually selected as the skeleton material of polyurethane coated fabrics abroad. However, compared with nylon fiber, polyester fiber has the advantages of large modulus and low elongation. It has been found through research that the soft tank produced by polyester fiber has better dimensional stability than the soft tank produced by nylon fiber. Therefore, the tank body uses polyester fiber as the skeleton material to produce polyurethane soft tanks. The portable folding oil tank adopts a polyurethane soft tank, which can be folded to less than 6% of the total volume in an empty state, saving space and being easy to store. It has the characteristics of small size, light weight, easy transportation and handling, and has extremely strong oil resistance, sealing performance, anti-ultraviolet and anti-aging performance.

[0060] In some embodiments, Figure 3This is a schematic diagram of the framework of an oil level monitoring unit in a portable foldable oil tank oil level detection and control system for a transformer according to an embodiment of the present application. The oil level monitoring unit includes: a liquid level sensor, which is arranged on the tank body and is used to monitor the liquid level data information of the transformer insulating oil in the tank body in real time; and a microprocessor, which is connected to the A / D converter and is used to send the liquid level data information of the digital signal to the online detector.

[0061] In one embodiment, Figure 3 The framework schematic diagram of the oil level monitoring unit shown in the figure, in the portable folding oil tank oil level detection control system for the transformer, the oil level monitoring unit also includes: an I / V converter, which is connected to the liquid level sensor and is used to convert the liquid level data information from a current signal to a voltage signal; an A / D converter, which is connected to the I / V converter and is used to convert the liquid level data information from a voltage signal to a digital signal.

[0062] In some embodiments, Figure 4 This is a framework schematic diagram of a host computer and an intelligent terminal in an oil level detection and control system for a portable foldable oil tank for a transformer according to an embodiment of the present application. The portable foldable oil tank for a transformer oil level detection and control system also includes: an intelligent terminal, which is wirelessly connected to the host computer by scanning the QR code information on the portable foldable oil tank; wherein the intelligent terminal is used to obtain the liquid level data information, to receive the portable foldable oil tank, and to send a request instruction to the host computer, and the host computer generates the control instruction according to the request information. The liquid level data information is transmitted and stored in the host computer via RS485 bus communication. The host computer records the usage data of each portable foldable oil tank, which is convenient for later viewing of the usage record of the oil tank, solving the defect that the existing oil tank cannot record the usage.

[0063] In one embodiment, the smart terminal is a smart phone, a notebook or a tablet computer. The smart terminal is used to scan the QR code information on the portable folding oil tank with the smart terminal, so as to wirelessly connect to the host computer, obtain the liquid level status of the insulating oil in the oil tank and the oil tank, and send an instruction to request oil discharge to the host computer through the smart terminal. The host computer generates a control instruction according to the request information, and then controls the solenoid valve on the oil tank to open through the online detector to replenish oil to the transformer, thereby realizing full automation of the use of the oil tank.

[0064] In some embodiments, Figure 5 This is a schematic diagram of a framework of a portable foldable oil tank oil level detection control method for a transformer according to an embodiment of the present application, which includes:

[0065] S10, the oil level monitoring unit collects liquid level data information of the portable foldable oil tank and sends the liquid level data information to the online detector;

[0066] S20, the online detector receives the liquid level data information, controls the electromagnetic valve of the portable foldable oil tank to open or close according to the liquid level data information, and simultaneously sends the liquid level data information to the host computer;

[0067] S30, the host computer sends a control instruction to the online detector according to the liquid level data information and the request information;

[0068] S40, the intelligent terminal scans the QR code information on the portable foldable oil tank to wirelessly connect to the host computer, and after obtaining the liquid level data information, sends the request instruction to the host computer.

[0069] By adopting the oil level detection and control method of the portable folding oil tank for transformers, the oil level in the oil storage tank for each transformer can be automatically monitored in real time, and on-site detection operation can be realized through the intelligent terminal. It is easy to use and saves labor in real time, which improves the management and efficiency and use efficiency of the oil storage tank for transformers at each site, and also brings great convenience to the users, and has good promotion and application value.

[0070] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, the equalization changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A portable foldable oil tank oil level detection and control system for transformers, characterized in that: include: An oil level monitoring unit, which is arranged on the portable foldable oil tank and is used to monitor the liquid level data information of the transformer insulating oil in the portable foldable oil tank in real time; An online detector, connected to the portable foldable oil tank, for receiving and displaying the liquid level data information of each portable foldable oil tank, processing and analyzing the liquid level data information, and controlling the opening or closing of the portable foldable oil tank according to a control instruction; and A host computer, connected to the online detector, for receiving and storing the liquid level data information, and sending a first control instruction to the online detector; The portable foldable oil tank comprises: The tank body is a foldable structure made of soft material and is used to store insulating oil for transformers; A solenoid valve, which is arranged at the oil inlet and the oil outlet of the tank body and is wirelessly connected to the relay output unit for executing the control instruction; The system's portable foldable oil tank oil level detection and control method for transformers includes: The oil level monitoring unit collects the liquid level data information of the portable foldable oil tank and sends the liquid level data information to the online detector; The online detector receives the liquid level data information, controls the electromagnetic valve of the portable foldable oil tank to open or close according to the liquid level data information, and simultaneously sends the liquid level data information to the host computer; The host computer sends a control instruction to the online detector according to the liquid level data information and the request information; The intelligent terminal scans the QR code information on the portable foldable oil tank to wirelessly connect to the host computer, and after obtaining the liquid level data information, sends a request instruction to the host computer.

2. The portable foldable oil tank oil level detection and control system for transformer according to claim 1 is characterized in that: The online detector comprises: A single chip microcomputer, which is connected to the portable foldable oil tank and the host computer through a first communication unit and a second communication unit respectively, and is used to process and analyze the received liquid level data information, and send the processed analysis data information to the host computer; A display unit connected to the single chip computer and used for displaying the liquid level data information and the analysis data information; A key unit, connected to the single chip microcomputer and used for inputting a second control instruction to the single chip microcomputer; A relay output unit is connected to the single chip microcomputer and is used to control the opening or closing of the solenoid valve of the portable foldable oil tank according to the first control instruction or the second control instruction.

3. The portable foldable oil tank oil level detection and control system for transformer according to claim 2 is characterized in that: The online detector further comprises: an indicating unit connected to the single chip microcomputer and configured to issue an alarm when the liquid level data exceeds a preset threshold; and A power supply unit is connected to the single chip microcomputer and is used to supply power to the online detector.

4. The portable foldable oil tank oil level detection and control system for transformer according to claim 2 is characterized in that: The single chip microcomputer is a Mega48 single chip microcomputer.

5. The portable foldable oil tank oil level detection and control system for transformer according to claim 2 is characterized in that: The first communication unit and the second communication unit adopt 485 wireless communication modules.

6. The portable foldable oil tank oil level detection and control system for transformer according to claim 1 is characterized in that: The oil level monitoring unit comprises: A liquid level sensor, which is arranged on the tank body and is used to monitor the liquid level data information of the transformer insulating oil in the tank body in real time; and A microprocessor is connected to an A / D converter and is used to send the liquid level data information of a digital signal to the online detector.

7. The portable foldable oil tank oil level detection and control system for transformer according to claim 6 is characterized in that: The oil level monitoring unit further comprises: An I / V converter connected to the liquid level sensor and used to convert the liquid level data information from a current signal to a voltage signal; The A / D converter is connected to the I / V converter and is used to convert the liquid level data information from a voltage signal into a digital signal.

8. The portable foldable oil tank oil level detection and control system for transformer according to claim 1 is characterized in that: Also includes: An intelligent terminal, which is wirelessly connected to the host computer by scanning the QR code information on the portable foldable oil tank; The intelligent terminal is used to obtain the liquid level data information, to collect the portable foldable oil tank, and to send a request instruction to the host computer, and the host computer generates the control instruction according to the request information.

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