KR20190113325A - Electric transformer - Google Patents

Abstract

Provided is an electric transformer comprising a pipe with a fixing member coupled with a sensor member for detecting dissolved gases in oil of insulating oil in the elastic transformer. The fixing member comprises: a head unit exposed to the outer surface of the pipe; and a body unit exposed into the pipe and having an exposure hole to allow the insulating oil to come in contact with the sensor member.

Description

Electric transformer

The present invention relates to a transformer, and more particularly to a transformer that can be easily coupled to the gas detection sensor for analyzing the oil condition of the hydraulic transformer.

In general, transformers are installed to increase or decrease the voltage of transmission and distribution lines, and play an important role in the stable supply of power as an important component of a power system.

The inside of the transformer is filled with insulating oil, which is to prevent the insulation strength from deteriorating due to moisture or dust in the winding of the transformer, and to dissipate heat generated from the winding by convection or radiation of the oil.

At this time, the transformer is decomposed under the influence of heat due to abnormal phenomena such as thermal decomposition, local overheating and temperature rise due to operation due to the discharge inside the transformer. H2, CO, C2H2, C2H4 Gas may be released and dissolved in insulating oil.

As a method for detecting the gas contained in the insulating oil, there are an oil valve direct connection type and an oil circulation type.

The above two methods are the same as taking the insulating oil inside the transformer into the data acquisition device and analyzing it and putting it back into the transformer. However, the oil valve direct type is directly connected to the transformer's oil valve. It is a method of collecting and analyzing the insulating oil on the side, and the oil circulation type is a method of taking the insulating oil from the oil valve and putting it back into the oil valve after analysis.

In recent years, research has been conducted on a structure in which a gas detection sensor can be mounted so that the data acquisition device can analyze the state of the insulating oil without directly collecting the insulating oil.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transformer in which a fixing member which is easily coupled with a gas detection sensor for analyzing a state of an insulating oil of a hydraulic transformer is formed.

The transformer according to the present invention includes a pipe in which a fixing member is coupled to which a sensor member for detecting oil in gas of insulating oil is coupled to the transformer, wherein the fixing member includes a head portion exposed to an outer surface of the pipe and an inside of the pipe. The body may be exposed to the insulating oil, and the body may have an exposure hole formed to contact the sensor member.

The head part may include an insertion hole into which the sensor member is inserted in the first direction.

The body portion may have a coupling hole coupled with the sensor member inserted in the first direction from the insertion hole.

On the inner side surface of the second coupling hole, a screw line may be formed to be coupled to the sensor member outward.

The fixing member may further include a blocking plate that is inserted and fixed to the head part to prevent backflow of the insulating oil when the sensor member is not coupled.

The head portion is formed with an insertion hole into which the sensor member is inserted in the first direction, and the body portion is formed with a coupling hole coupled with the sensor member inserted into the first direction from the insertion hole, and the head portion is formed. A separation hole may be formed in which the blocking plate is inserted and fixed to separate the insertion hole and the coupling hole.

The head unit may have a confirmation hole for visually confirming whether the sensor member is coupled and whether the blocking plate is inserted.

The transformer according to the present invention has an advantage in that the sensor member including the gas detection sensor is coupled to the fixed member formed in the hydraulic pipe, so that a user or an operator can use the sensor member coupled to the fixed member at a desired position.

In the transformer according to the present invention, a separate valve or the like for detecting the oil in the gas is provided by transmitting a detection signal in which the sensor member coupled to the fixing member directly detects the oil in the oil contained in the insulating oil to the data acquisition device. By not doing so, the manufacturing cost in manufacturing the transformer is lowered, there is an advantage that the installation space is narrowed.

1 is a perspective view of a transformer according to the present invention.
2 is a simplified cross-sectional view showing an inlet pipe of a transformer according to the present invention.
3 is a perspective view showing the fixing member shown in FIG.
4 is a side view showing side surfaces of the fixing member shown in FIG. 3 intersecting with each other.
5 to 6 are cross-sectional views showing first and second embodiments of the fixing member shown in FIG.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

1 is a perspective view of a transformer according to the present invention.

Referring to FIG. 1, the transformer 100 may include a radiator 1 and a transformer body 10.

Here, the radiator 1 is a lower side of the first inlet pipe 11 introduced from the transformer body 10, the second inlet pipe 12 branched from the first inlet pipe 11, and the second inlet pipe 12. It may include a plurality of heat dissipating plate 13 connected to the insulating oil and a discharge pipe 14 connected to the lower side of the heat dissipating plate 13 to discharge the heat insulating insulating oil to the transformer body 10.

The radiator 1 has a plurality of heat sinks in which the first inlet pipe 11 is connected in a horizontal direction from one side of the transformer body 10, and below the second inlet pipe 12 branched from the first inlet pipe 11. (13) is formed to be spaced apart from each other.

The first and second inlet pipes 11 and 12 and the plurality of heat sinks 13 are one embodiment for describing the transformer 100, and the first and second inlet pipes 11 and 12 and the plurality of heat sinks 13 are described. ) May be formed in other forms, without being limited thereto.

Figure 2 is a simplified cross-sectional view showing the inlet pipe of the transformer according to the present invention, Figure 3 is a perspective view showing the fixing member shown in Figure 2 and Figure 4 is a side view showing the mutually intersecting side of the fixing member shown in FIG.

Although FIG. 2 is described as the second inlet pipe 12 of the first and second inlet pipes 11 and 12 shown in FIG. 1, it may be the first inlet pipe 11 or the outlet pipe 14. Do not leave.

2 to 4, the second inflow pipe 12 may include a sensor member 110 and a fixing member 120.

In an embodiment, the fixing member 120 is shown as the sensor member 110 is coupled.

The fixing member 120 may be integrally formed with the second inflow pipe 12. In an embodiment, the fixing member 120 is inserted into a hole (not shown) formed in the second inflow pipe 12, and may be coupled to each other by welding.

The fixing member 120 is exposed to the outer surface of the second inflow pipe 12, the head portion 122 welded to the outer surface of the second inflow pipe 12, and the inside of the second inflow pipe 12 and is insulated from oil. (Not shown) may include a body portion 124 in which an exposure hole ph is formed to contact the sensor member 110.

The exposed hole ph may be formed so as not to block the flow of the insulating oil.

Here, an insertion hole (not shown) into which the sensor member 110 is inserted may be formed in the head 122.

In addition, the body portion 124 may be formed with a coupling hole (not shown) coupled with the sensor member 110 inserted into the insertion hole.

Details of the insertion hole and the coupling hole will be described later with reference to FIGS. 4 and 5.

The head 122 may be provided with a confirmation hole (vh) that can visually determine whether the sensor member 110 is coupled.

That is, the confirmation hole vh may allow a user or an operator to visually check whether the sensor member 110 is coupled. If the size of the confirmation hole vh is small, the confirmation hole vh may be confirmed by the color of the sensor member 110. have.

In addition, when the sensor member 110 is not coupled to the head 122, a separation hole (ah) into which a blocking plate (not shown) is inserted to separate the insertion hole and the coupling hole may be formed.

The sensor member 110 may include a body portion 112 and a sensor portion 114.

The body part 112 includes a sensor part 114 and is configured to deliver a sensor value (not shown) corresponding to the oil in gas of the insulating oil detected by the sensor part 114 to an external data acquisition device (not shown). The signal line L may be formed. In addition, the sensor unit 114 may transmit the sensor value to the data acquisition device through wireless communication.

In an embodiment, the data acquisition device may acquire and store the sensor value for the gas in oil of the insulating oil.

The data acquisition device may monitor the state of the insulating oil flowing in the second inflow pipe 12 as the signal line L is connected.

The width of the body portion 112 is formed to be narrower than the exposure width of the exposure hole (ph), it is possible to smooth the flow of the insulating oil.

Here, the sensing unit 114 may detect the oil gas and the temperature of the insulating oil, but is not limited thereto.

5 to 6 are cross-sectional views showing first and second embodiments of the fixing member shown in FIG.

First, FIG. 5 illustrates that the sensor member 110 is inserted into the fixing member 120.

Referring to FIG. 5, an insertion hole bh in which the sensor member 110 is inserted in the first direction p1 is formed in the head portion 122 of the fixing member 120, and the body portion of the fixing member 120 is formed. A coupling hole dh coupled to the sensor member 110 inserted into the insertion hole bh may be formed at 124.

Here, the screw line ns2 is formed on the inner surface of the coupling hole dh, and may be coupled to the screw line ns1 formed on the body portion 112 of the sensor member 110.

That is, the sensor member 110 may be rotated to be coupled to the fixing member 120 and the screw.

Thereafter, when the sensor member 110 is coupled to the fixing member 120, the sensor unit 114 may be exposed to the exposure hole ph.

In this way, the fixing member 120 is screwed and fixed to the sensor member 110, there is an advantage that can be prevented from being separated by the internal pressure of the second inflow pipe 12.

6 illustrates that the sensor member 110 is not coupled to the fixing member 120.

That is, referring to FIG. 6, when the sensor member 110 is uncoupled by the user or the operator, the fixing member 120 is a separation hole in which a separate blocking plate 130 is inserted and fixed by the user or the operator. (ah) may be formed.

Here, the blocking plate 130 separates the insertion hole bh of the head portion 122 and the coupling hole dh of the body portion 124 from each other, so that the insulating oil flowing in the second inflow pipe 12 passes through the head portion. Backflow to 122 can be prevented.

When the fixing member 120 is in a state in which the sensor member 110 is coupled, the screw line ns2 of the body portion 124 and the screw line of the body portion 114 of the sensor member 110 are shown in FIG. 5. (ns1) is screwed together, to prevent backflow of the insulating oil.

However, in a state in which the sensor member 110 is separated or not coupled to the fixing member 120, since the insulating oil flows back to the outside of the second inflow pipe 12 by internal pressure, the blocking plate 130 is the head portion 122. It is coupled to the separation hole (ah) formed in the) to prevent backflow.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

100: transformer 110: sensor member
120: fixing member 130: blocking plate

Claims (7)

A pipe having a fixing member to which the sensor member for detecting the gas in oil of the insulating oil in the transformer is coupled;
The fixing member,
A head portion exposed to the outer surface of the pipe; And
And a body part exposed to the inside of the pipe and having an exposure hole formed so that the insulating oil contacts the sensor member. The method of claim 1,
The head portion,
A transformer having an insertion hole into which the sensor member is inserted in the first direction. The method of claim 2,
The body portion,
And a coupling hole coupled with the sensor member inserted in the first direction from the insertion hole. The method of claim 3, wherein
On the inner side of the coupling hole,
A transformer having a screw line formed to be coupled to the sensor member and out. The method of claim 1,
The fixing member,
The non-combination of the sensor member, the transformer further comprises a blocking plate that is inserted and fixed to the head portion to prevent the back flow of the insulating oil. The method of claim 5,
The head portion,
An insertion hole into which the sensor member is inserted in the first direction is formed,
The body portion,
A second coupling hole coupled to the sensor member inserted in the first direction from the insertion hole is formed,
The head portion,
And a separation hole in which the blocking plate is inserted and fixed to separate the insertion hole and the coupling hole. The method of claim 5,
The head portion,
And a confirmation hole for visually confirming whether the sensor member is coupled and whether the blocking plate is inserted.

Images