CN214427038U - Large-scale oil-immersed power transformer valve arrangement structure that draws oil sample - Google Patents
Large-scale oil-immersed power transformer valve arrangement structure that draws oil sample Download PDFInfo
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- CN214427038U CN214427038U CN202120425908.2U CN202120425908U CN214427038U CN 214427038 U CN214427038 U CN 214427038U CN 202120425908 U CN202120425908 U CN 202120425908U CN 214427038 U CN214427038 U CN 214427038U
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Abstract
The utility model provides a large-scale oil-immersed power transformer valve arrangement structure that draws oil appearance, including upper portion sample valve, middle part sample valve and lower part sample valve, upper portion sample valve, middle part sample valve and lower part sample valve are connected with the sample connection through first honeycomb duct, second honeycomb duct and third honeycomb duct respectively. This get oil sample valve arrangement structure and conveniently take a sample, improve the security of sampling operation.
Description
Technical Field
The utility model belongs to the technical field of electric power, in particular to large-scale oil-immersed power transformer valve arrangement structure that draws oil appearance.
Background
In recent years, the production of 500kV transformer substations in China is gradually increased, and more than 100 transformer substations are available. According to the national standard, 1 sampling valve is respectively arranged on the upper part, the middle part and the lower part of a box body of the large oil-immersed power transformer, and the sampling detection of the internal insulating oil is required to be carried out regularly, and the sampling is manually operated at present. Under the transformer normal operating condition, generally only gather transformer bottom oil appearance through lower sample valve, and when lower oil appearance testing result appears unusually, often need gather middle part, upper portion oil appearance and compare to carry out fault diagnosis. The upper and middle sampling ball valves of many large-scale oil-immersed power transformers are higher in position, if adopt glass needle tubing to carry out moisture, contain gas sample detection to transformer oil, during the inevitable meeting of outside air enters into the sample, directly influences failure diagnosis to, often relate to the operation of ascending a height in these operations, there is very big potential safety hazard in operation personnel in the operation process. The sampling valve at the lower part of the large oil-immersed power transformer is arranged too low, the sampling operation needs to be carried out by means of a rubber hose and the like, and the large oil-immersed power transformer is often in a half-squatting state during operation, so that operating personnel are easy to fatigue. Therefore, proper setting of the sampling valve is very important.
The sampling valves of the transformer are mainly divided into three types, including a duplex opening valve, a flange clamping piece valve and a sampling valve with a heat-insulating jacket. The duplex opening valve is a common sampling valve, generally consists of two connected ball valves, and is characterized by safe and stable sampling. In the sampling process, sampling is carried out through the matching of opening, closing and the like of the two valves. The principle of the flange clamping piece valve is that the conical hole of the cone and the valve seat at the top of the valve rod are sealed, the position of the valve rod is lifted by using a hand wheel during sampling, the valve rod is separated from the conical hole, and thus media in the conical hole can flow into an external sampling vessel. The sampling valve with the heat-preservation jacket is mainly suitable for transformers used in low-temperature environments.
When taking a sample to the insulating oil in the transformer, open the valve plug with the spanner, will grind mouthful utensil stopper glass bottle and directly place below the sample valve, insulating oil flows into in the sample bottle along the bottle wall of grinding mouthful utensil stopper glass bottle through the sample connection. When the transformer oil is detected to contain water and gas, a hose is connected to the sampling port, and the insulating oil is extracted from the hose by a glass needle tube. However, the oil sample is often polluted by the outside in the sampling process, so that the sampling measurement is repeated, and manpower and material resources are wasted. In addition, in the sampling process, the insulating oil flows out of the sampling port under the action of gravity, so that the insulating oil is splashed all around frequently, and certain damage is caused to the health and the environment of an operator. The whole sampling process causes great waste to the insulating oil in the transformer, shortens the oil supplementing period of the transformer and increases economic loss.
Disclosure of Invention
The utility model aims to solve the technical problem that a large-scale oil-immersed power transformer valve arrangement structure that draws oil appearance is provided, and the security of sample operation is improved in convenient sample.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a large-scale oily formula power transformer valve arrangement structure that draws oil appearance, includes upper portion sample valve, middle part sample valve and lower part sample valve, upper portion sample valve, middle part sample valve and lower part sample valve are connected with the sample connection through first honeycomb duct, second honeycomb duct and third honeycomb duct respectively.
In the preferred scheme, the number of the sampling ports is three, and the three sampling ports are respectively connected with the first flow guide pipe, the second flow guide pipe and the third flow guide pipe.
In a preferred scheme, the sampling port is provided with an opening and closing valve.
In a preferred scheme, the first guide pipe, the second guide pipe and the third guide pipe are connected with the transformer through a fixing device, the fixing device comprises reinforcing iron connected with the transformer, the reinforcing iron is connected with the mounting seat, and the first guide pipe, the second guide pipe and the third guide pipe are connected with the mounting seat through fixing pieces and bolts.
In a preferred scheme, the first guide pipe, the second guide pipe and the third guide pipe are galvanized pipes.
In a preferred scheme, the distance h between the sampling port and the installation plane of the transformer is 1.1-1.3 m.
In a preferred scheme, a sampling port sleeve is arranged on the sampling port.
The utility model provides a pair of large-scale oil-immersed power transformer valve arrangement structure that draws oil appearance when removing the sample, and sample valve, sample connection are in the closed condition, and dual protection can not have the hidden danger of oil impregnate. When the transformer samples, according to the sample demand, open corresponding upper portion sample valve or middle part sample valve or lower part sample valve, twist open the on-off valve on the sample connection and can take a sample safely. The sampling port is arranged to facilitate the operation of sampling personnel on the ground, so that the reliability of sampling the insulating oil is realized, and the waste of the insulating oil is reduced; sampling operation is convenient, and only there is the aerial work when upper portion sample valve and middle part sample valve are opened, are closed, have shortened aerial work time greatly, and sampling operation's security improves greatly.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a schematic structural diagram of a sampling port;
in the figure: upper portion sample valve 1, middle part sample valve 2, lower part sample valve 3, first honeycomb duct 4, second honeycomb duct 5, third honeycomb duct 6, thief hatch 7, on-off valve 8, fixing device 9, thief hatch cover 10, reinforced iron 901, mount pad 902, stationary blade 903.
Detailed Description
As shown in fig. 1-3, a large-scale oil-immersed power transformer draws oil appearance valve arrangement structure, includes upper portion sample valve 1, middle part sample valve 2 and lower part sample valve 3, and ball valve is chooseed for use to upper portion sample valve 1, middle part sample valve 2 and lower part sample valve 3, upper portion sample valve 1, middle part sample valve 2 and lower part sample valve 3 are connected with sample connection 7 through first honeycomb duct 4, second honeycomb duct 5 and third honeycomb duct 6 respectively.
The setting of sample connection 7 can be selected according to the structure flexibility of transformer, and for the operation of sampling personnel, the distance h of sample connection 7 and the mounting plane of transformer is 1.1m ~1.3 m. The height is convenient for the sampling operator to operate.
The sampling port 7 can be matched and remodeled again according to the field use requirement.
The number of the sampling ports 7 is three, and the three sampling ports are respectively connected with the first flow guide pipe 4, the second flow guide pipe 5 and the third flow guide pipe 6.
Specifically, the ends of the first draft tube 4, the second draft tube 5 and the third draft tube 6 are fixed with the upper sampling valve 1, the middle sampling valve 2 and the lower sampling valve 3 through bolts via flange plates. The first draft tube 4, the second draft tube 5 and the third draft tube 6 are connected with the sampling port 7 through welding. The honeycomb duct carries out the adaptation according to the size of sample valve and sample connection.
Preferably, the sampling port 7 is provided with an opening and closing valve 8. The sampling port 7 can be closed by providing an opening/closing valve 8.
Preferably, the first guide pipe 4, the second guide pipe 5 and the third guide pipe 6 are connected with the transformer through a fixing device 9, the first guide pipe 4, the second guide pipe 5 and the third guide pipe 6 can be fixed through the fixing device 9, and the influence of vibration on the operation of the equipment is avoided.
The fixing device 9 comprises a reinforcing iron 901 connected with the transformer, the reinforcing iron 901 is connected with the mounting seat 902, and the first guide pipe 4, the second guide pipe 5 and the third guide pipe 6 are connected with the mounting seat 902 through a fixing plate 903 and a bolt.
The honeycomb duct and the sampling opening are fixed, flexible selection (strictly fixed on the box wall and reinforced iron) is carried out according to the structure of the transformer, and fire operation on the box wall of the transformer is avoided as much as possible during fixing.
Preferably, the first draft tube 4, the second draft tube 5 and the third draft tube 6 are galvanized tubes. The corrosion of the pipeline can be reduced.
Preferably, a sampling opening sleeve 10 is arranged on the sampling opening 7. The sample connection sleeve 10 protects the sample connection 7 and prevents the sample connection 7 from being polluted.
Except that when taking a sample, sampling valve, sample connection are in the closed condition, and dual protection can not have the hidden danger of oil impregnate. When the transformer samples, according to the sample demand, open corresponding upper portion sample valve 1 or middle part sample valve 2 or lower part sample valve 3, take off sample connection cover 10, twist open the on-off valve 8 on the sample connection and can take a sample safely. And (5) screwing the opening and closing valve 8, sleeving the sampling port sleeve 10 on the sampling end port, and closing the sampling valve.
The sampling port is arranged to facilitate the operation of sampling personnel on the ground, so that the reliability of sampling the insulating oil is realized, and the waste of the insulating oil is reduced; sampling operation is convenient, and only there is the aerial work when upper sampling valve 1 and middle sampling valve 2 are opened, are closed, have shortened the operation time that exceeds greatly, and sampling operation's security improves greatly.
Claims (7)
1. The utility model provides a large-scale oily formula power transformer valve arrangement structure that draws oil sample, includes upper portion sample valve (1), middle part sample valve (2) and lower part sample valve (3), its characterized in that: the upper sampling valve (1), the middle sampling valve (2) and the lower sampling valve (3) are respectively connected with a sampling port (7) through a first flow guide pipe (4), a second flow guide pipe (5) and a third flow guide pipe (6).
2. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the number of the sampling ports (7) is three, and the three sampling ports are respectively connected with the first guide pipe (4), the second guide pipe (5) and the third guide pipe (6).
3. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the sampling port (7) is provided with an opening and closing valve (8).
4. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the first guide pipe (4), the second guide pipe (5) and the third guide pipe (6) are connected with the transformer through a fixing device (9), the fixing device (9) comprises a reinforcing iron (901) connected with the transformer, the reinforcing iron (901) is connected with a mounting seat (902), and the first guide pipe (4), the second guide pipe (5) and the third guide pipe (6) are connected with the mounting seat (902) through a fixing piece (903) and a bolt.
5. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the first guide pipe (4), the second guide pipe (5) and the third guide pipe (6) are galvanized pipes.
6. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the distance h between the sampling port (7) and the installation plane of the transformer is 1.1-1.3 m.
7. The large oil-filled power transformer oil sampling valve arrangement structure according to claim 1, wherein: the sampling port (7) is provided with a sampling port sleeve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120425908.2U CN214427038U (en) | 2021-02-26 | 2021-02-26 | Large-scale oil-immersed power transformer valve arrangement structure that draws oil sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120425908.2U CN214427038U (en) | 2021-02-26 | 2021-02-26 | Large-scale oil-immersed power transformer valve arrangement structure that draws oil sample |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878961A (en) * | 2023-09-06 | 2023-10-13 | 保定变压器有限公司 | Extra-high voltage transformer oil sampling valve external guiding device |
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2021
- 2021-02-26 CN CN202120425908.2U patent/CN214427038U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878961A (en) * | 2023-09-06 | 2023-10-13 | 保定变压器有限公司 | Extra-high voltage transformer oil sampling valve external guiding device |
| CN116878961B (en) * | 2023-09-06 | 2023-11-17 | 保定变压器有限公司 | Extra-high voltage transformer oil sampling valve external guiding device |
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