Transformer oil sample collection tool

Abstract

The utility model discloses an oil sample collecting tool for a transformer. The oil sample collecting tool comprises a cover cylinder, a digital display device, an induction shunt valve and a collecting container, a magnet is arranged at an end opening of the cover cylinder, the cover cylinder is attracted to the side wall of the transformer to form a closed space, and a rotating assembly used for screwing an oil drain valve bolt is arranged on the cover cylinder; the digital display device comprises an external flow velocity sensor and an electromagnetic valve, the flow velocity sensor is communicated with the electromagnetic valve through a pipeline, the bottom of the cover cylinder is connected with a water inlet port of the flow velocity sensor through a hose, and a water outlet port of the electromagnetic valve is connected with the induction shunt valve through a hose; the other two ports of the induction shunt valve are connected with a warm liquid hose and a cold liquid hose respectively, and the warm liquid hose and the cold liquid hose are connected with different collecting containers respectively. According to the utility model, the sampling accuracy and reliability can be ensured, and the transformer oil is prevented from splashing and spraying to work clothes and the ground.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, specifically to a transformer oil sample collection tool. Background Technology

[0002] In transformers, an insulating medium is required to separate the high-voltage winding from the low-voltage winding. Transformer oil is one of the important insulating media, playing roles in heat dissipation and cooling, purification, oxidation resistance, arc extinguishing, and fault early warning and diagnosis. To ensure the stable operation of the power system, transformer oil samples need to be collected. By collecting and analyzing transformer oil samples, the quality status of the oil can be understood, including its insulation performance, water content, gas content, and other key indicators. Changes in these indicators may indicate problems inside the transformer, such as insulation aging, moisture penetration, or gas generation. This allows for timely fault detection and preventative maintenance.

[0003] Currently, the process of collecting transformer oil first requires draining a portion of the ineffective transformer oil sample accumulated in the drain valve pipeline before collecting it using glassware. This method is relatively crude and has the following main problems:

[0004] 1. Oil waste problem: The amount of oil discharged from invalid oil samples cannot be controlled. It is mainly judged by the operators based on experience, and there is no quantitative means to display the amount of oil samples discharged in real time.

[0005] 2. Environmental issues: Oil samples may splatter everywhere, and excess waste oil may not be collected and treated. Furthermore, the splattered oil samples will pollute the environment and soil the work clothes of the workers.

[0006] 3. Risk of equipment malfunction during oil sampling: When opening the oil release valve, there is no precise means to control the flow rate and speed of the oil, and it relies entirely on the personal experience of the operator. If negligence occurs and the valve is opened too quickly or too wide, there is a risk of false alarm for light gas or false alarm for heavy gas.

[0007] Therefore, in order to overcome the problems encountered in the above collection process, this utility model provides a transformer oil sample collection tool. Utility Model Content

[0008] The purpose of this invention is to provide a transformer oil sample collection tool to overcome the problems in the prior art.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A transformer oil sample collection tool includes a cover, a digital display device, an induction water distribution valve, and a collection container;

[0011] The cover is equipped with a magnet at its port, and the cover is attached to the side wall of the transformer to form a sealed space. A rotating assembly for turning the drain valve bolt is provided on the cover.

[0012] The digital display device includes an external flow rate sensor and a solenoid valve, which are connected by a pipe. The bottom of the cover is connected to the water inlet port of the flow rate sensor via a hose, and the water outlet port of the solenoid valve is connected to the induction water distribution valve via a hose.

[0013] The other two ports of the induction water distribution valve are respectively connected to a warm liquid hose and a cold liquid hose, which are respectively connected to different collection containers.

[0014] Furthermore, the rotating assembly includes a bearing and a rod. The bearing is fixedly mounted at the end of the cover, and the rod passes through the bearing and extends into the cover. A groove is provided at the end of the rod to cooperate with the drain valve bolt.

[0015] Furthermore, the collection container includes a sample bottle for submitting oil samples and a bottle for invalid oil samples. A warm liquid hose extends into the sample bottle for submitting oil samples, and a cold liquid hose extends into the bottle for invalid oil samples. Both the sample bottle for submitting oil samples and the bottle for invalid oil samples are made of transparent material.

[0016] Furthermore, the collection container also includes a collection box, which contains a sponge pad and a groove on the sponge pad that matches the oil sample bottle to be tested and the invalid oil sample bottle.

[0017] Furthermore, the cover is made of transparent material, and a water pipe connector is provided at the bottom of the cover, with the end of the hose connected to the water pipe connector.

[0018] Furthermore, the digital display device also includes an A / D conversion module, an MCU module, and a display screen. The flow rate sensor, the A / D conversion module, the MCU module, and the display screen are electrically connected in sequence, and the MCU module is electrically connected to the solenoid valve.

[0019] Furthermore, the flow rate sensor is a Hall effect flow rate sensor.

[0020] Compared with the prior art, the present invention can achieve at least the following beneficial effects:

[0021] 1. This utility model features a cover with a magnet at its port, allowing it to be magnetically attached to the transformer body. This fixing method eliminates the need for additional installation steps or complex operations, significantly improving work efficiency. Furthermore, the stability of the magnetic attachment ensures that the sampling tool will not move or loosen during sampling, guaranteeing the accuracy and reliability of the sampling. The cover, when attached to the transformer body, forms a sealed space, preventing transformer oil from splashing onto work clothes and the ground.

[0022] 2. A rotating assembly is provided on the cover, which includes bearings and rods, enabling the rotation of the drain valve bolt to be controlled from the outside under sealed conditions, thereby controlling the oil sample flow rate;

[0023] 3. This utility model is equipped with a digital display device, which includes a flow rate sensor and a solenoid valve, and can set the flow rate and flow control threshold to accurately control the real-time flow rate and flow of the oil sample;

[0024] 4. Digital display device and induction water distribution valve: Because there is a significant temperature difference between the oil sample circulating inside the transformer body and the invalid oil sample in the drain valve pipeline, when the oil flows through the induction water distribution valve, the type of oil sample collected is determined by detecting the oil sample temperature and then discharged into the corresponding collection container. This achieves effective differentiation of oil sample types, avoids invalid oil samples from being mixed into the test samples, improves sample quality and collection efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the cross-section of the cover.

[0027] Figure 3 This is a schematic diagram of the internal structure of the data collection box.

[0028] Figure 4 This is a schematic diagram of the digital display device.

[0029] Figure 5 This is a schematic diagram of the rod structure.

[0030] Figure 6 This is a schematic diagram of the induction-operated water distribution valve.

[0031] In the diagram, 1-shroud, 2-bearing, 3-rod, 4-water pipe connector, 5-hose, 6-digital display device, 61-flow rate sensor, 62-solenoid valve, 63-A / D conversion module, 65-display screen, 7-induction water distribution valve, 8-collection box, 9-warm liquid hose, 10-cold liquid hose, 11-invalid oil sample bottle, 12-oil sample bottle for testing, 13-sponge pad. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] refer to Figure 1 As shown, this utility model provides a transformer oil sample collection tool, including a cover 1, a digital display device 6, an induction water distribution valve 7, and a collection container;

[0034] refer to Figure 2 As shown, a magnet is provided at the port of the cover 1. Preferably, the magnet is a neodymium iron boron black strong magnet with multi-layer protection for waterproofing and rust prevention. It can resist corrosion in environments with high salt, acid, and alkali, and maintain stable magnetism. The cover 1 is adsorbed onto the side wall of the transformer to form a sealed space, thereby preventing oil from splashing during oil discharge. A rotating component for turning the oil discharge valve bolt is provided on the cover 1, which enables the rotation of the oil discharge valve bolt to be controlled from the outside under sealed conditions, and ultimately directly controls the oil sample flow rate.

[0035] refer to Figure 4 As shown, the digital display device 6 includes an external flow rate sensor 61 and a solenoid valve 62. The flow rate sensor 61 and the solenoid valve 62 are connected by a pipe, which can be a silicone tube. Furthermore, the flow rate sensor 61 is a Hall effect flow rate sensor. This type of sensor has high accuracy and rapid feedback, and can be used to monitor the flow rate of oil samples. The sensor drives the impeller to rotate, thereby outputting pulse signals. Each pulse signal represents a certain flow rate, thus realizing flow rate monitoring. The bottom of the cover 1 is connected to the water inlet port of the flow rate sensor 61 through a hose 5, and the water outlet port of the solenoid valve 62 is connected to the sensing water distribution valve 7 through a hose 5, thereby realizing the connection between the digital display device 6 and the cover 1 and the sensing water distribution valve 7.

[0036] refer to Figure 6 As shown. The other two ports of the induction water distribution valve 7 are respectively connected to a warm liquid hose 9 and a cold liquid hose 10, which are respectively connected to different collection containers.

[0037] It should be noted that the inductive water distribution valve 7 is existing technology. The inductive water distribution valve 7 has a built-in temperature probe. Based on the principle of heat conduction, when the temperature probe comes into contact with the object being measured, the heat inside the probe is conducted to the object, thus bringing the temperatures of the probe and the object into thermal equilibrium. By measuring the temperature change inside the probe, the temperature of the object can be indirectly determined. The inductive water distribution valve 7 uses a set temperature threshold as an auxiliary condition. Because there is a significant temperature difference between the oil sample circulating within the transformer body and the invalid oil sample in the drain valve pipeline, the type of oil sample currently collected is determined by the oil sample temperature. This automatically switches the opening and closing of the two outlet ports of the inductive water distribution valve 7, effectively distinguishing the oil sample type, preventing invalid oil samples from mixing into the test sample, and improving sample quality.

[0038] For details, please refer to Figure 3The collection container includes a sample bottle 12 for submitting oil samples and a bottle 11 for invalid oil samples. Both the sample bottle 12 for submitting oil samples and the bottle 11 for invalid oil samples are made of transparent material so that the internal conditions can be clearly observed during the sampling process.

[0039] During implementation, the warm liquid hose 9 extends into the oil sample bottle 12, and the cold liquid hose 10 extends into the invalid oil sample bottle 11. Furthermore, the collection container also includes a collection box 8, which contains a sponge pad 13. The sponge pad 13 has grooves that match the oil sample bottle 12 and the invalid oil sample bottle 11, facilitating the placement of the bottles and ensuring the bottles are protected by a storage box.

[0040] Specifically, the rotating assembly includes a bearing 2 and a rod 3. The bearing 2 is fixedly mounted at the end of the cover 1, and the rod 3 passes through the bearing 2 and extends into the cover 1. Figure 5 As shown, a groove is provided at the end of rod 3 to mate with the oil drain valve bolt.

[0041] During implementation, the groove of rod 3 is engaged with the oil drain valve bolt on the side wall of the transformer. The tightness of the oil drain valve bolt can be adjusted by rotating rod 3 outside the cover 1, so that the rotation of the oil drain valve bolt can be controlled from the outside under sealed conditions to prevent oil splashing.

[0042] The cover 1 is made of transparent material, and a water pipe connector 4 is provided at the bottom of the cover 1. The end of the hose 5 is connected to the water pipe connector 4.

[0043] The digital display device 6 also includes an A / D conversion module 63, an MCU module 64, and a display screen 65. The flow rate sensor 61, the A / D conversion module 63, the MCU module 64, and the display screen 65 are electrically connected in sequence. The MCU module 64 is electrically connected to the solenoid valve 62.

[0044] During implementation, the pulse signal transmitted by the flow rate sensor 61 is converted into a digital signal by the A / D conversion module 63 and the cumulative flow is calculated by the MCU module 64 and finally displayed on the display screen 65. In addition, the flow rate and flow control values ​​are manually set according to the work object by the MCU module 64 before the operation, and finally used by the external solenoid valve 62 to achieve constant speed and quantitative control.

[0045] The working process of this utility model is as follows: the port of the cover cylinder 1 is adsorbed onto the side wall of the transformer. During adsorption, the end of the rod 3 needs to be fitted onto the oil drain valve bolt. The end of the rod 3 is rotated outside the cover cylinder 1 to control the tightness of the oil drain valve bolt, thereby controlling the oil draining process. Since the oil covered by the cover cylinder 1 cannot splash outward, the oil flows along the hose 5 through the external flow rate sensor 61 of the digital display device 6 to monitor the flow rate. In addition, the flow rate and flow control values ​​can be set. Finally, the external solenoid valve 62 is used to achieve constant speed and quantity control. The oil flows out from the solenoid valve 62 and enters the induction water distribution valve 7. The induction water distribution valve 7 has a built-in temperature probe to detect the temperature of the oil. Since there is a significant temperature difference between the oil sample circulating inside the transformer body and the invalid oil sample in the drain valve pipeline, the oil sample type can be determined by temperature. This controls the opening and closing of the two ports of the induction water distribution valve 7, so that the invalid oil sample and the oil sample to be tested can enter the invalid oil sample bottle 11 and the oil sample to be tested bottle 12 for collection, respectively.

[0046] To compare the actual working efficiency of this tool, after confirming that the substation, specific equipment, and operation type were consistent, the time for traditional methods to be used to conduct oil sampling operations at the substation was queried from the substation management platform. The data comparison results are as follows:

[0047]

[0048] As can be seen, the traditional method takes an average of 16.61 minutes, while the tool provided by this utility model takes an average of 6.52 minutes, a reduction of 10.09 minutes, which significantly improves the collection efficiency.

[0049] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A transformer oil sample collection tool, characterized in that: Includes a cover (1), a digital display device (6), a sensor-operated water distribution valve (7), and a collection container; The cover (1) is provided with a magnet at its port. The cover (1) is attached to the side wall of the transformer to form a sealed space. A rotating assembly for turning the oil drain valve bolt is provided on the cover (1). The digital display device (6) includes an external flow rate sensor (61) and a solenoid valve (62). The flow rate sensor (61) and the solenoid valve (62) are connected by a pipe. The bottom of the cover (1) is connected to the water inlet port of the flow rate sensor (61) through a hose (5). The water outlet port of the solenoid valve (62) is connected to the sensing water distribution valve (7) through a hose (5). The other two ports of the induction water distribution valve (7) are respectively connected to a warm liquid hose (9) and a cold liquid hose (10), and the warm liquid hose (9) and the cold liquid hose (10) are respectively connected to different collection containers.

2. The transformer oil sampling tool according to claim 1, characterized in that: The rotating assembly includes a bearing (2) and a rod (3). The bearing (2) is fixedly installed at the end of the cover (1). The rod (3) passes through the bearing (2) and extends into the cover (1). A groove is provided at the end of the rod (3) to cooperate with the oil drain valve bolt.

3. The transformer oil sampling tool according to claim 1, characterized in that: The collection container includes a sample bottle (12) for submitting oil samples and a bottle (11) for invalid oil samples. A warm liquid hose (9) extends into the sample bottle (12) for submitting oil samples and a cold liquid hose (10) extends into the bottle (11) for invalid oil samples. Both the sample bottle (12) for submitting oil samples and the bottle (11) for invalid oil samples are made of transparent material.

4. The transformer oil sampling tool according to claim 3, characterized in that: The collection container also includes a collection box (8), in which a sponge pad (13) is provided, and a trough matching the oil sample bottle (12) and the invalid oil sample bottle (11) is provided on the sponge pad (13).

5. The transformer oil sampling tool according to claim 1, characterized in that: The cover (1) is made of transparent material. A water pipe connector (4) is provided at the bottom of the cover (1), and the end of the hose (5) is connected to the water pipe connector (4).

6. The transformer oil sampling tool according to claim 1, characterized in that: The digital display device (6) also includes an A / D conversion module (63), an MCU module (64), and a display screen (65). The flow rate sensor (61), the A / D conversion module (63), the MCU module (64), and the display screen (65) are electrically connected in sequence, and the MCU module (64) and the solenoid valve (62) are electrically connected.

7. The transformer oil sampling tool according to claim 1, characterized in that: The flow velocity sensor (61) is a Hall effect flow velocity sensor.

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