CN211652171U - Transformer on-load tap changer insulating oil sampling device - Google Patents
Transformer on-load tap changer insulating oil sampling device Download PDFInfo
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- CN211652171U CN211652171U CN201922029725.4U CN201922029725U CN211652171U CN 211652171 U CN211652171 U CN 211652171U CN 201922029725 U CN201922029725 U CN 201922029725U CN 211652171 U CN211652171 U CN 211652171U
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- transformer
- load tap
- insulating oil
- tap changer
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Abstract
The utility model provides a transformer on-load tap-changer insulating oil sampling device, the one end of intercommunicating pore is connected transformer on-load tap-changer oil-out and the connecting plate surface sets up the cushion table that the diameter is greater than the intercommunicating pore on the connecting plate, and the sampling tube is then connected to the other end, can also set up the sealing washer between connecting plate and the transformer on-load tap-changer. The insulating oil flows out from the oil outlet of the on-load voltage regulation switch of the transformer, enters the buffer table for buffering, and then flows out from the sampling pipe, so that the scattering of the flowing insulating oil can be avoided, and the insulating oil can flow out more smoothly, thereby improving the sampling quality of the insulating oil and improving the working efficiency of sampling and detection; meanwhile, the sampling device is simple in structure and convenient to operate, and convenience in operation is improved.
Description
Technical Field
The utility model relates to a device that insulating oil sample was carried out to on-load tap changer on transformer.
Background
A transformer capable of completing voltage switching of a tap during load operation is called an on-load tap changer, and the on-load tap changer can adjust voltage and maintain the voltage stable. Insulating oil is used as lubricating oil in the on-load tap changing transformer, and in order to ensure the working stability of the on-load tap changing transformer, the insulating oil in the on-load tap changing transformer needs to keep certain working quality. However, as the operation is continued, a large amount of impurities are mixed in the insulating oil to cause the quality of the insulating oil to be reduced, and in order to ensure that the quality of the insulating oil is maintained at a set level, the insulating oil in the on-load tap changer needs to be sampled and detected from time to time during the operation of the equipment. The existing sampling method mainly comprises the steps that a pipeline for sampling is connected to an on-load tap changer, a transformer on-load tap changer is arranged at the tail end of the pipeline, a sealing cover is arranged at an oil outlet of the transformer on-load tap changer, insulating oil can flow out of the oil outlet of the transformer on-load tap changer, and an operator can collect the insulating oil by using a container. Although the method can be used for sampling, due to the pressure difference between the inside and the outside of the on-load tap changer, scattering is easily formed when the insulating oil flows out of the oil outlet, so that on one hand, the contact between the insulating oil and impurities such as air, water vapor, dust and the like can be increased, and the precision of the insulating oil is reduced, on the other hand, when the insulating oil is sprayed from the oil outlet and flows out of a container, bubbles are easily generated to leave a large amount of air, and the air can cause unqualified inspection of the sampled insulating oil, waste of the insulating oil and reduction of the working efficiency; in addition, repeated oil sampling for many times can cause the oil level of the on-load tap changer of the transformer to be too low to meet the operation requirement.
Disclosure of Invention
An object of the utility model is to provide a simple structure just can improve the transformer of insulating oil sample quality on-load tap changer insulating oil sampling device to improve the sample quality and the detection efficiency of insulating oil.
Transformer on-load tap changer insulating oil sampling device, including the connecting plate, one side and the transformer on-load tap changer of connecting plate are connected, the sampling tube is installed to the connecting plate opposite side, still is provided with the intercommunicating pore that communicates transformer on-load tap changer oil-out and sampling tube on the connecting plate, the connecting plate surface is located the transformer in-range of on-load tap changer oil-out and is provided with inside sunken cushion table, the diameter of cushion table is not more than the diameter of transformer on-load tap changer oil-out and is greater than the diameter of intercommunicating pore.
Transformer on-load tap changer insulating oil sampling device, on-load tap changer is last to be provided with the transformer on-load tap changer who takes the oil outlet, when the insulating oil sample is carried out to needs, open the transformer on-load tap changer and make the connecting plate be connected rather than, insulating oil will flow from the transformer on-load tap changer oil-out, the insulating oil of these flows at first can flow into the cushion chamber and cushion, then flow through the intercommunicating pore and the sampling tube of connecting plate again, operating personnel can follow the export of sampling tube and collect insulating oil. The insulating oil sampling device of the on-load tap changer of the transformer can perform sampling work through the connecting plate and the sampling tube, and has a simple structure and convenient operation; in addition, the insulating oil flowing out of the oil outlet of the on-load tap changer of the transformer firstly enters the buffer table of the connecting plate, so that the scattering of the insulating oil can be avoided on one hand, and the injection pressure of the insulating oil can be reduced on the other hand, so that the insulating oil can smoothly flow out of the sampling pipe, the sampling quality of the insulating oil is improved, and the working efficiency of sampling and detection is improved; in addition, before being connected connecting plate and transformer on-load tap changer, can also utilize insulating oil to carry out preliminary cleanness to connecting plate and sampling tube, then collect insulating oil again to the insulating oil quality of further improvement sample.
Drawings
Fig. 1 is a structural schematic diagram of an insulating oil sampling device of a transformer on-load tap changer.
Fig. 2 is a schematic structural diagram of another embodiment of the transformer on-load tap changer insulating oil sampling device.
Detailed Description
The utility model provides a transformer on-load tap-changer insulating oil sampling device, including connecting plate 1, one side and the transformer on-load tap-changer of connecting plate are connected, sampling tube 2 is installed to the connecting plate opposite side, still be provided with the intercommunicating pore 3 that feeds through transformer on-load tap-changer oil-out and sampling tube on the connecting plate, the connecting plate surface is located the scope of transformer on-load tap-changer oil-out and is provided with inside sunken cushion table 4, the diameter of cushion table is not more than the diameter of transformer on-load tap-changer oil-out and is greater than the.
The on-load tap changer is provided with a transformer on-load tap changer with an oil outlet, and if the tap changer is of a closed cover type structure, a connecting plate of the sampling device is detachably connected with the tap changer; if the pressure regulating switch is a valve arranged on the pipeline, the sampling device can also be fixedly arranged on the pipeline so as to reduce the need of repeated assembly and disassembly.
When the insulating oil sample is carried out to needs, open transformer on-load tap changer, insulating oil will flow from transformer on-load tap changer oil-out, and these insulating oil that flow out can flow into the cushion table at first and cushion, then flow through the intercommunicating pore and the sampling tube of connecting plate again, and operating personnel can collect insulating oil from the export of sampling tube, or utilize the insulating oil of preliminary outflow to clean connecting plate intercommunicating pore and sampling tube, wait to collect insulating oil again after the completion of cleaning. The sampling device is simple in structure and convenient to operate, and can effectively and stably collect insulating oil, so that the sampling quality of the insulating oil is improved, and the working efficiency of sampling and detection is improved.
According to the transformer on-load tap changer insulating oil sampling device, the sampling tube 2 can be a straight tube as shown in figure 1 or an elbow as shown in figure 2, the injection pressure of the insulating oil is further reduced through a bent pipeline, and therefore the insulating oil can flow out more smoothly.
According to the transformer on-load tap changer insulating oil sampling device, an annular inward-concave annular groove 5 is formed in the surface of the connecting plate 1 and the opposite position, located on the periphery of an oil outlet, of the transformer on-load tap changer, a sealing ring (not shown) placed in the annular groove is arranged, the sealing ring abuts against the transformer on-load tap changer, the sealing performance of the connection of the sampling device and the transformer on-load tap changer is improved through the arrangement of the sealing ring, and insulating oil leakage is avoided. In addition, the connecting plate 1 can be connected with the transformer on-load tap changer through a bolt and nut pair, a connecting hole 6 for a bolt to pass through is formed in the connecting plate, and the connecting hole 6 can be a round hole or a U-shaped hole so as to meet different connection requirements.
Claims (5)
1. The utility model provides a transformer on-load tap-changer insulating oil sampling device which characterized in that: the on-load tap changer comprises a connecting plate (1), one side of the connecting plate is connected with an on-load tap changer of a transformer, a sampling tube (2) is installed on the other side of the connecting plate, a communication hole (3) for communicating an oil outlet of the on-load tap changer of the transformer with the sampling tube is further formed in the connecting plate, an inward-sunken buffer table (4) is arranged in the range of the oil outlet of the on-load tap changer of the transformer on the surface of the connecting plate, and the diameter of the buffer table is not larger than the diameter.
2. The transformer on-load tap changer insulating oil sampling device of claim 1, characterized in that: the surface of the connecting plate (1) and the opposite position of the periphery of the oil outlet on the on-load tap changer of the transformer are provided with an annular groove (5) which is sunken inwards, and a sealing ring which is arranged in the annular groove is arranged and is abutted against the on-load tap changer of the transformer.
3. The transformer on-load tap changer insulating oil sampling device of claim 1, characterized in that: the connecting plate (1) is connected with the transformer on-load tap changer through a bolt and nut pair, and a connecting hole (6) for a bolt to pass through is formed in the connecting plate.
4. The transformer on-load tap changer insulating oil sampling device of claim 3, characterized in that: the connecting hole (6) is a round hole or a U-shaped hole.
5. The transformer on-load tap changer insulating oil sampling device of claim 1, characterized in that: the sampling tube (2) is a straight tube or a bent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029725.4U CN211652171U (en) | 2019-11-22 | 2019-11-22 | Transformer on-load tap changer insulating oil sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029725.4U CN211652171U (en) | 2019-11-22 | 2019-11-22 | Transformer on-load tap changer insulating oil sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211652171U true CN211652171U (en) | 2020-10-09 |
Family
ID=72692842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922029725.4U Active CN211652171U (en) | 2019-11-22 | 2019-11-22 | Transformer on-load tap changer insulating oil sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211652171U (en) |
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2019
- 2019-11-22 CN CN201922029725.4U patent/CN211652171U/en active Active
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