Transformer gas sampling device

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer gas sampling device which comprises a gas inlet pipe, an air bag is connected to the tail end of the gas inlet pipe, a sampling valve is arranged on the gas inlet pipe, the gas inlet pipe is connected with a gas sampling box in a transformer when the gas sampling device is used, and a connecting pipe is connected between the gas inlet pipe and the gas sampling box. The transformer gas collecting device is easy to operate, high in practicability and low in technical requirement for operators, it is guaranteed that transformer gas is effectively collected, and it is guaranteed that test data are accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, specifically is a kind of transformer gas sampling device. BACKGROUND

[0002] There can be two forms of faults, partial overheating and partial discharge, in the transformer in operation, and the transformer oil and solid insulation material around the fault point generate gas due to heating when fault occurs. When latent fault occurs, the gas generation rate is slow, and the characteristic gas generated is slowly released in the insulating oil, and eventually concentrated to the gas relay to trigger alarm. When the fault is more serious, the gas generation rate is fast, and the characteristic gas generated is directly precipitated from the insulating oil, concentrated to the gas relay, and triggered heavy gas alarm.

[0003] In order to judge the type of obstacle and the severity of fault, the generated gas needs to be sampled and analyzed, and the previous sampling method using flushing pipeline is easy to produce impurity gas, flushing is not clean, and residual gas is easy to affect the analysis result. Other special vacuum sampling machines are high in cost and complex in operation steps, which are not economical and practical for some enterprises. At the same time, external power supply is needed in the operation site, which is dangerous. UTILITY MODEL CONTENT

[0004] The utility model aims to solve the problem that the collection and sampling of gas are limited in purity, which affects the accuracy of data in the prior art.

[0005] The present application provides a kind of transformer gas sampling device, by the following specific technical means is achieved: including inlet pipe, the tail end of the inlet pipe is connected with air bag, and sampling valve is arranged on the inlet pipe, and inlet pipe is connected with gas taking box in transformer when using.

[0006] Preferred technical solution one: connecting pipe is connected between the inlet pipe and the gas taking box, and the connecting pipe is a hose.

[0007] Preferred technical solution two: control valve is arranged on the air bag, for pressing air bag to discharge air in air bag through control valve.

[0008] Preferred technical solution three: the air bag is elastic skin bag that can rebound.

[0009] The above structure makes the present application have the following beneficial effects:

[0010] 1. Solve the problem on site with minimum investment;

[0011] 2. Simple operation and strong practicability, low technical requirement for operating personnel;

[0012] 3. Ensure effective collection of transformer gas, and ensure accurate test data. DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0014] Figure 1 It is a whole structure schematic view of the present application.

[0015] Among them, 1, air bag, 2, connecting pipe, 3, sampling valve, 4, air inlet pipe. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application; based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Please refer to Figure 1 , the transformer gas sampling device, including air inlet pipe 4, air inlet pipe 4 preferably white steel air inlet pipe, air inlet pipe 4 tail end is connected with air bag 1, and air inlet pipe 4 is provided with sampling valve 3, sampling valve 3 is preferably stainless steel sampling valve, air inlet pipe 4 is connected with connecting pipe 2 between the gas sampling box, connecting pipe 2 is a hose, the hose end is connected with the exhaust valve outlet on the gas sampling box in the transformer.

[0018] Please refer to Figure 1 , the transformer gas sampling device, air bag 1 is provided with control valve, the air in the air bag 1 is discharged through the control valve when the air bag 1 is pressed after the control valve is opened, and the control valve is closed after discharge, the air bag 1 is elastic skin bag, after the pressure disappears, the elastic skin bag is rebounded to form negative pressure in the air inlet pipe 4, the gas in the gas sampling box is conveniently sucked into the air bag 1.

[0019] Specific use process: open the stainless steel sampling valve 3 before use, extrude the air bag 1 to discharge the internal air, after closing the stainless steel sampling valve 3, connect the connecting pipe 2 and the gas sampling box firmly, under normal circumstances, the gas sampling box is filled with transformer oil, when the gas needs to be collected, open the lower air plug and gradually discharge the transformer oil in the box, then the fault gas in the gas chamber of the gas relay is filled into the gas sampling box under the pressure of the hydraulic difference of the oil storage tank, open the exhaust valve of the gas sampling box, at this time, the gas enters the air bag 1 under the action of the negative pressure of the air bag 1, after collection, close the stainless steel sampling valve 3, remove the connecting pipe 2, and close the exhaust valve of the gas sampling box.

[0020] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer gas sampling device, characterized in that: It comprises an air intake pipe (4), the tail end of which is connected to an air bag (1), and a sampling valve (3) is provided on the air intake pipe (4). When in use, the air intake pipe (4) is connected to an air extraction box in a transformer.

2. A transformer gas sampling device according to claim 1, characterized in that: A connecting pipe (2) is connected between the air inlet pipe (4) and the air extraction box, and the connecting pipe (2) is a hose.

3. A transformer gas sampling device according to claim 1 or 2, characterized in that: The air bag (1) is provided with a control valve.

4. A transformer gas sampling device according to claim 3, characterized in that: The airbag (1) is an elastic leather bag.

5. The transformer gas sampling device according to claim 1, characterized in that: The sampling valve (3) is preferably a stainless steel sampling valve.

6. The transformer gas sampling device according to claim 1, characterized in that: The air intake pipe (4) is preferably a stainless steel air intake pipe.

Images