CN218937897U - Fault gas collection device for SF6 gas insulation transformer - Google Patents
Fault gas collection device for SF6 gas insulation transformer Download PDFInfo
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- CN218937897U CN218937897U CN202222885900.1U CN202222885900U CN218937897U CN 218937897 U CN218937897 U CN 218937897U CN 202222885900 U CN202222885900 U CN 202222885900U CN 218937897 U CN218937897 U CN 218937897U
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Abstract
The utility model discloses a method for SF 6 The fault gas collection device of the gas insulation transformer comprises a gas-guiding pipe, wherein the gas-guiding pipe is an L-shaped pipe and comprises a vertical pipe and a horizontal pipe; the vertical pipe penetrates through the secondary lead pipe, penetrates out of the secondary lead pipe from the bottom of the vertical pipe and is connected with the horizontal pipe; the horizontal pipe is arranged above the metal base; the air outlet port of the air suction pipe is arranged on the SF 6 And a sampling port of the gas insulation transformer. The device is used for solving the prior SF 6 The gas channel inside the gas insulated transformer is reformed and is installed on the SF by the original gas sampling port 6 Lower part of gas insulation transformerAnd directly discharging air from the lower part, changing into a sampling port connected with a small-caliber thin tube, leading to SF through a secondary lead tube at the ground potential 6 The upper part of the gas insulation transformer can obtain SF through a small amount of exhaust gas when sampling the gas 6 The detection result can timely and effectively reflect SF (sulfur hexafluoride) by using a main insulation surrounding gas sample at the upper part of the gas insulation transformer 6 Insulating state of the gas insulated transformer.
Description
Technical Field
The utility model relates to the technical field of fault gas collection in SF6 gas insulation transformers, in particular to a fault gas collection device for an SF6 gas insulation transformer.
Background
The gas decomposition product can effectively reflect SF 6 The insulation state of the gas insulation transformer is based on 500KVSF for 23 in the existing system 6 Fault analysis of gas-insulated transformer, almost all SF 6 The internal discharge faults of the gas insulation transformer are finally characterized in the detection of the gas components. But SF 6 CT has large difference in height between upper and lower parts, gas in the gas chamber is relatively fixed, gas fluidity in a closed space is poor, H 2 S、SO 2 Equal fault characteristic gas molecular weight compared with SF 6 The device is small and concentrated in the head space, and meanwhile, part of manufacturers put adsorbents at the bottom, so that the situation that data are small and judgment is influenced can occur when gas decomposer is sampled and detected, and the design of the gas collecting device capable of directly extracting the head of the transformer is very important for fault gas collecting work.
The utility model with publication number CN 104891449A discloses an electric SF 6 An on-line processing device for transformer gas and a use method thereof. It comprises an SF 6 Mutual inductor, SF 6 The lower part of the transformer is provided with a first opening which is connected with one end of an exhaust pipe through an air release valve, the other end of the exhaust pipe is connected with an inlet of an air pump, an outlet of the air pump is connected with a first branch pipe, the first branch pipe is respectively connected with a main pipe and a second branch pipe, and the main pipe is connected with an SF through a pressure reducing valve 6 The gas cylinder is connected with a second branch pipe and an SF 6 The gas adsorption tank and a buffer tank are connected in sequence, the buffer tank is connected with a gas adding pipe through an electromagnetic valve, the gas adding pipe is provided with a vent valve, and the gas adding pipe is connected with SF through a gas adding connecting pipe and an air inlet valve 6 The second opening arranged at the upper part of the mutual inductor is connected. But the bleed valve of the device is at SF 6 The bottom of the gas insulation transformer, and the fault gas is often gathered at the head of the transformer, the accuracy of the fault acquisition result can be greatly influenced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a fault gas collecting device which aims at the prior SF 6 The gas channel inside the gas insulated transformer is reformed and is installed on the SF by the original gas sampling port 6 The lower part of the gas-insulated transformer directly discharges air from the lower part, and is connected with a small-caliber thin tube in a sampling port instead, and the small-caliber thin tube is led to SF (sulfur hexafluoride) through a secondary lead tube at the ground potential 6 The upper part of the gas insulation transformer can obtain SF through a small amount of exhaust gas when sampling the gas 6 The gas sample around the main insulation of the upper part of the gas insulated transformer can timely and effectively reflect SF 6 Insulating state of the gas insulated transformer.
The utility model discloses a fault gas collection device for an SF6 gas insulation transformer, which comprises a bleed gas pipe body, wherein the bleed gas pipe is an L-shaped pipe and comprises a vertical pipe and a horizontal pipe; the vertical pipe is arranged in SF in a penetrating way 6 The bottom of the vertical pipe penetrates out of the secondary lead pipe and is connected with the horizontal pipe; the horizontal pipe is arranged above the metal base; the air outlet port of the air suction pipe is arranged on the SF 6 And a sampling port of the gas insulation transformer.
Further, the standpipe laminating secondary lead pipe inner wall sets up.
Further, the pipe diameter of the air suction pipe is 1-3 mm.
Further, the air-inducing pipe is an L-shaped pipe with two open ends.
Further, an air inlet hole is formed in the connection position between the side wall of the secondary lead pipe and the top end of the air entraining pipe, and the bottom end of the air entraining pipe is opened.
Furthermore, a check valve is arranged at the air outlet port of the air suction pipe.
The utility model has the beneficial effects that:
is installed on SF by original gas sampling port 6 The lower part of the gas-insulated transformer directly discharges air from the lower part, and is connected with a small-caliber thin tube in a sampling port instead, and the small-caliber thin tube is led to SF (sulfur hexafluoride) through a secondary lead tube at the ground potential 6 The upper part of the gas insulation transformer can obtain SF through a small amount of exhaust gas when sampling the gas 6 The gas sample around the main insulation of the upper part of the gas insulated transformer can timely and effectively reflect SF 6 An insulation state of the gas insulation transformer;
in the device, a very thin air-entraining pipe is attached to the inner wall of the secondary lead pipe and can be welded and installed, and even manufactured together with the secondary lead pipe, so that the air-entraining pipe structure can not cause any influence on the threading of the secondary lead in the secondary lead pipe;
in order to better reflect the gas condition around the external insulation of the secondary lead tube when guaranteeing to get gas, this gas collection system will draw the upper end opening of trachea in secondary lead tube lateral wall, perhaps will draw the welding position with the trachea side top on the secondary lead tube lateral wall and offer the side inlet port, make the air inlet of induced trachea be close to the transformer head more, the trouble gas of gathering accords with actual conditions more.
Drawings
Fig. 1: an overall schematic.
Fig. 2: the secondary lead tube portion structure of example 1 is schematically shown.
Fig. 3: the secondary lead tube portion structure of example 2 is schematically shown.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
It should be noted that, in the present application, unless otherwise stated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the direction shown in the drawings, or with respect to the component itself in the vertical, vertical or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.
Example 1
As shown in fig. 1-2, a method for SF 6 The fault gas collecting device of the gas insulated transformer comprises a fault gas collecting device arranged on an SF 6 The air entraining pipe 1 in the gas insulated transformer is an L-shaped small-caliber thin pipe, and consists of a vertical pipe 2 and a horizontal pipe 3.
The top of the vertical pipe 2 is arranged on the upper part of the side wall of the secondary lead pipe 4, and the bottom of the vertical pipe 2 penetrates out of the secondary lead pipe 4 and is connected with the horizontal pipe 3. The horizontal tube 3 is placed above the metal base 5.
The air outlet port of the air suction pipe 1 is arranged on the SF 6 The sampling port of the gas insulation transformer is provided with a check valve 7 at the air outlet port of the air entraining pipe 1.
The pipe diameter range of the air bleed pipe 1 is 1-3 mm, and the pipe diameter is the peripheral pipe diameter of the air bleed pipe 1.
In this embodiment, the air introduction pipe 1 is an L-shaped pipe with both ends open. The fault gas enters from the top end of the gas-introducing pipe 1 and is transmitted through the gas-introducing pipe 1, and is output from the bottom end of the gas-introducing pipe 1, namely, the sampling port of the transformer.
Example 2
As shown in fig. 3, the distinguishing feature of the present embodiment from embodiment 1 is that in the present embodiment, the bleed air pipe 1 is only opened at the bottom end, the side air inlet hole 8 is provided at the welding position between the side wall of the secondary lead air pipe 4 and the top end of the bleed air pipe 1 side, the air at the head of the transformer is sucked through the side air inlet hole 8, and is discharged and collected from the outlet end of the air inlet pipe 1.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (6)
1. SF (sulfur hexafluoride) application 6 The fault gas collection device of the gas insulation transformer is characterized by comprising a gas-guiding pipe, wherein the gas-guiding pipe is an L-shaped pipe and comprises a vertical pipe and a horizontal pipe; the vertical pipe is arranged in SF in a penetrating way 6 The bottom of the vertical pipe penetrates out of the secondary lead pipe and is connected with the horizontal pipe; the horizontal pipe is arranged above the metal base; the air outlet port of the air suction pipe is arranged on the SF 6 And a sampling port of the gas insulation transformer.
2. A method according to claim 1 for SF 6 The fault gas collection device of the gas insulation transformer is characterized in that the vertical pipe is attached to the inner wall of the secondary lead pipe.
3. A method according to claim 2 for SF 6 Fault gas acquisition device of gas insulation transformerIs characterized in that the pipe diameter of the air entraining pipe is 1-3 mm.
4. A method according to claim 3 for SF 6 The fault gas collection device of the gas insulation transformer is characterized in that the gas-guiding pipe is an L-shaped pipe with two open ends.
5. A method according to claim 3 for SF 6 The fault gas collection device of the gas insulation transformer is characterized in that an air inlet hole is formed in the connection position between the side wall of the secondary lead pipe and the top end of the air entraining pipe side, and the bottom end of the air entraining pipe is opened.
6. A method according to claim 4 or claim 5 for SF 6 The fault gas collection device of the gas insulation transformer is characterized in that a check valve is arranged at the outlet port of the air entraining pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222885900.1U CN218937897U (en) | 2022-10-31 | 2022-10-31 | Fault gas collection device for SF6 gas insulation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222885900.1U CN218937897U (en) | 2022-10-31 | 2022-10-31 | Fault gas collection device for SF6 gas insulation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218937897U true CN218937897U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222885900.1U Active CN218937897U (en) | 2022-10-31 | 2022-10-31 | Fault gas collection device for SF6 gas insulation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218937897U (en) |
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2022
- 2022-10-31 CN CN202222885900.1U patent/CN218937897U/en active Active
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