TWI770551B - Method and structure of vacuum oil injection for oil pressure equalizer - Google Patents

Abstract

A vacuum oil filling method for an oil-type pressure comparator, comprising: turning on the switch of the upper pipe body and the switch of the oil inlet pipe body, and closing the switch of the lower pipe body, so that the connection between the lower pipe body and the shell is not connected. Turn on the vacuum device. The insulating oil is injected from the oil inlet. The insulating oil flows from the oil inlet pipe body to the lower pipe body, and the vacuum device evacuates the insulating oil to flow up the insulating oil, so that the insulating oil flows to the oil cup for storage. When the insulating oil in the oil cup is nearly full, stop filling the insulating oil and turn off the switch of the oil inlet pipe. The vacuuming device continues to operate until the insulating oil in the oil cup is completely free of air bubbles. Turn on the switch of the lower pipe body to communicate between the lower pipe body and the shell. The insulating oil flows down to the casing for storage, and the vacuuming device continues to operate to maintain the vacuum state. Turn on the switch of the oil inlet pipe body and turn off the switch of the lower pipe body. Repeat the above steps several times, and maintain the vacuum state after completion.

Description

Method and structure of vacuum oil injection for oil pressure equalizer

The present invention relates to an oil-type pressure equalizer, in particular to a vacuum oil injection method and structure of the oil-type pressure equalizer.

Voltage comparators are generally used in power systems. High voltages in power systems are widely used. Since high voltages are not easy to measure or control directly with electricity meters, voltage comparators are usually used to convert high voltages into low voltages. Electricity meter to measure, or provide low voltage to the instrument or protection relay, which can achieve the effect of protection and monitoring of the power system.

As shown in FIG. 1, it is a front view of the prior art. The oil-type pressure comparator 30 includes a casing 31 , an upper cover 32 and an oil-filling pipe 33 . At present, the oil-filling method of the oil-type pressure comparator 30 is to inject insulating oil into the housing 31 through the oil-filling pipe 33 to make the insulation The oil flows into the housing 31 of the oil-type pressure comparator 30 for storage, but the above-mentioned oil filling method is easy to contact the insulating oil with the air, so the insulating oil in the oil-type pressure comparator 30 may have bubbles remaining, which is easy to cause the The oil-type pressure equalizer 30 is partially discharged, which leads to poor quality, or even causes the oil-type pressure equalizer 30 to malfunction.

In view of the above reasons, there is still room for improvement in the prior art. In view of this, the present inventor has actively researched and developed the present invention after years of experience in the research and development of related products, and through continuous testing and improvement.

The main purpose of the present invention is to provide a vacuum oil injection method for an oil pressure equalizer And the structure can solve the problem that the insulating oil in the oil-type pressure regulator may have bubbles remaining, and effectively reduce the chance of partial discharge, so as to achieve the effect of improving the quality of the oil-type pressure regulator.

Another object of the present invention is to provide a vacuum oil injection method and structure for an oil-type pressure regulator, so as to shorten the total oil injection time and increase the success rate of defoaming to more than 90%.

In order to achieve the above purpose, a vacuum oil injection structure for an oil-type pressure equalizer includes an oil-type pressure equalizer and an oil injection structure. The oil-type pressure equalizer includes a casing, the oil injection structure is arranged on the casing, and the oil injection The structure includes an upper pipe body, an oil cup and a lower pipe body. The bottom of the upper pipe body is connected to one end of the oil cup, the other end of the oil cup is connected to the top of the lower pipe body, and the bottom of the lower pipe body is connected to the shell. The upper pipe body is connected with a vacuum device, the upper pipe body is provided with an upper pipe body switch and is located above the oil cup, the lower pipe body is provided with a lower pipe body switch and is located below the oil cup; and the An oil inlet pipe body is arranged between the lower pipe body switch and the oil cup, the oil inlet pipe body is provided with an oil inlet pipe body switch, and an oil inlet port is formed at one end of the oil inlet pipe body.

Preferably, the housing includes a tank body and an upper cover, the opening of the tank body is provided with the upper cover, the upper cover is equipped with the oil filling structure, and the lower part of the lower pipe body is connected to the upper cover.

The vacuum oil filling method for an oil pressure equalizer of the present invention includes: turning on the switch of the upper pipe body and the switch of the oil inlet pipe body, and closing the switch of the lower pipe body, so that there is no communication between the lower pipe body and the casing ; Open the vacuuming device; the insulating oil is injected from the oil inlet; the insulating oil flows from the oil inlet pipe body to the lower pipe body, after the vacuuming device is started, the insulating oil flows upward, and the insulating oil flows to the oil cup When the insulating oil in the oil cup is nearly full, stop injecting the insulating oil, and turn off the switch of the oil inlet pipe body; the vacuuming device continues to operate until the insulating oil in the oil cup has no air bubbles; The upper pipe body switch and the lower pipe body switch are turned on, and the oil inlet pipe body switch is closed, so that the lower pipe body and the casing are communicated; the insulating oil flows down to the Store in the shell, and the vacuuming device continues to operate to maintain the vacuum state; turn on the oil inlet pipe switch and the upper pipe switch, and turn off the lower pipe switch; repeat the above steps several times to complete Then maintain the vacuum state.

Preferably, when the insulating oil in the oil cup is nearly 90% full, stop injecting the insulating oil.

Preferably, the aforementioned steps are repeated 15 times, and the vacuum state is maintained for 12 hours after completion.

Therefore, the effect of the present invention is to solve the problem that the insulating oil in the oil-type pressure equalizer may have bubbles remaining, and effectively reduce the chance of partial discharge, so as to increase the quality of the oil-type pressure equalizer and shorten the total oil filling time. And improve the success rate of defoaming by more than 90%.

In order to make the objects, features and advantages of the present invention easier to understand for those skilled in the art, a preferred embodiment is hereinafter described in detail with the accompanying drawings.

(this invention)

10: Oil pressure equalizer

11: Shell

111: tank body

112: Opening

12: upper cover

20: Oil injection structure

21: Upper body

211: Upper body switch

22: Oil cup

23: Lower body

231: Lower body switch

24: Oil inlet pipe body

241: Oil inlet pipe body switch

242: oil inlet

25: Vacuum device

S101~S110: Steps

(known technology)

30: Oil pressure equalizer

31: Shell

32: upper cover

33: Oil filling pipe

FIG. 1 is a front view of the prior art.

Fig. 2 is a perspective view of the vacuum oil injection structure of the oil pressure equalizer of the present invention.

FIG. 3 is a perspective exploded view of the vacuum oil injection structure of the oil pressure equalizer of the present invention.

FIG. 4 is a schematic diagram of an embodiment of the vacuum oil injection structure of the oil-type pressure equalizer of the present invention.

FIG. 5 is a flow chart of the steps of the vacuum oil injection method for the oil pressure equalizer according to the present invention.

Please refer to FIG. 2 to FIG. 4 , FIG. 2 is a perspective view of the vacuum oil injection structure of the oil pressure equalizer of the present invention, FIG. 3 is a perspective exploded view of the vacuum oil injection structure of the oil pressure equalizer of the present invention, and FIG. 4 is the oil injection structure of the present invention. Schematic diagram of the embodiment of the vacuum oil injection structure of the pressure regulator. An oil pressure equalizer vacuum injection The oil structure includes an oil pressure comparator 10 and an oil injection structure 20. The oil pressure comparator 10 includes a casing 11, the oil injection structure 20 is arranged on the casing 11, and the oil injection structure 20 includes an upper pipe body 21. Oil cup 22 and lower pipe body 23, the bottom of the upper pipe body 21 is connected to one end of the oil cup 22, the other end of the oil cup 22 is connected to the top of the lower pipe body 23, and the bottom of the lower pipe body 23 is connected On the casing 11, a vacuum device 25 is connected above the upper pipe body 21, the upper pipe body 21 is provided with an upper pipe body switch 211 and is located above the oil cup 22, and the lower pipe body 23 is provided with a lower pipe body The switch 231 is located below the oil cup 22; and an oil inlet pipe 24 is provided between the lower pipe switch 231 and the oil cup 22, and the oil inlet pipe 24 is provided with an oil inlet pipe switch 241. One end of the oil inlet pipe 24 An oil inlet 242 is formed.

The casing 11 includes a tank body 111 and an upper cover 12 , the opening 112 of the tank body 111 is provided with the upper cover 12 , the upper cover 12 is equipped with the oil filling structure 20 , and the lower part of the lower pipe body 23 is connected to the upper cover 12 .

Please refer to FIG. 5. FIG. 5 is a flow chart of the steps of the method for vacuum oil filling of an oil pressure equalizer according to the present invention. The invention relates to a vacuum oil injection method for an oil-type pressure equalizer, including:

Step S101 : Turn on the upper pipe switch 211 and the oil inlet pipe switch 241 , and turn off the lower pipe switch 231 , so that there is no communication between the lower pipe 23 and the casing 11 .

Step S102: Turn on the vacuuming device 25.

Step S103 : Insulating oil is injected from the oil inlet 242 .

Step S104 : the insulating oil flows from the oil inlet pipe body 24 to the lower pipe body 23 , and the vacuuming device 25 evacuates the insulating oil to flow upward, so that the insulating oil flows into the oil cup 22 for storage.

Step S105: when the insulating oil in the oil cup 22 is nearly full, stop Stop injecting insulating oil, and turn off the switch 241 of the oil inlet pipe. At this time, the upper tube body switch and the lower tube body switch are turned off. When the insulating oil in the oil cup 22 is nearly 90% full, the filling of the insulating oil is stopped.

Step S106 : the vacuuming device 25 continues to operate until the insulating oil in the oil cup 22 has no air bubbles.

Step S107 : the upper pipe body switch 211 and the lower pipe body switch 231 are turned on, the oil inlet pipe body switch is turned off, and the lower pipe body 23 and the casing 11 are communicated.

Step S108 : the insulating oil flows down to the casing 11 for storage, and the vacuuming device 25 continues to operate to maintain the vacuum state.

Step S109 : Turn on the oil inlet pipe switch 241 and the upper pipe switch, and turn off the lower pipe switch 231 .

Step S110: Repeat steps S103 to S109 multiple times, and maintain a vacuum state after completion. The foregoing steps S103 to S109 are repeated about 15 times, and the vacuum state is maintained for about 12 hours after completion.

The implementation of the present invention can solve the problem that the insulating oil in the oil-type pressure equalizer may have bubbles remaining, effectively reduce the chance of partial discharge, and achieve the effect of improving the quality of the oil-type pressure equalizer.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the appended patent application.

10: Oil pressure equalizer

11: Shell

111: tank body

112: Opening

12: upper cover

20: Oil injection structure

21: Upper body

211: Upper body switch

22: Oil cup

23: Lower body

231: Lower body switch

24: Oil inlet pipe body

241: Oil inlet pipe body switch

242: oil inlet

Claims (4)

A vacuum oiling method for an oil-type pressure comparator. The oil-type pressure-comparator vacuum oil-filling structure includes an oil-type pressure-comparator and an oil-injecting structure, the oil-type pressure-comparator includes a casing, and the oil-injecting structure is arranged on the casing. The oil filling structure includes an upper pipe body, an oil cup and a lower pipe body. The bottom of the upper pipe body is connected to one end of the oil cup, the other end of the oil cup is connected to the top of the lower pipe body, and the bottom of the lower pipe body is connected to the casing, the upper part of the upper pipe body is connected with a vacuuming device, the upper pipe body is provided with an upper pipe body switch and is located above the oil cup, and the lower pipe body is provided with a lower pipe body switch and is located below the oil cup; and an oil inlet pipe body is arranged between the lower pipe body switch and the oil cup, the oil inlet pipe body is provided with an oil inlet pipe body switch, and one end of the oil inlet pipe body is formed with an oil inlet; the vacuum oil filling method of the oil pressure equalizer, It includes: opening the upper pipe body switch and the oil inlet pipe body switch, and closing the lower pipe body switch, so that the lower pipe body and the casing are not connected; opening the vacuum device; insulating oil from the The oil inlet is injected; the insulating oil flows from the oil inlet pipe body to the lower pipe body. After the vacuuming device is activated, the insulating oil flows upward, and the insulating oil flows into the oil cup for storage; when the insulating oil in the oil cup When the storage is nearly full, stop injecting insulating oil, and turn off the switch of the oil inlet pipe body; the vacuum device continues to operate until the insulating oil in the oil cup has no air bubbles; switch the upper pipe body and the lower pipe body. The switch is turned on, the switch of the oil inlet pipe body is closed, so that the lower pipe body and the casing are communicated; the insulating oil flows down to the casing for storage, and the vacuuming device continues to operate to maintain the vacuum state; the The oil inlet pipe body switch is turned on and the upper pipe body switch is turned on, and the lower pipe body is turned on. Close; repeat the above steps several times, and maintain the vacuum state after completion. The vacuum oil filling method for an oil-type pressure equalizer as claimed in claim 1, wherein the housing comprises a tank body and an upper cover, the upper cover is installed on the opening of the tank body, and the oil filling structure is installed on the upper cover. The vacuum oil filling method for an oil-type pressure regulator according to claim 1, wherein when the insulating oil in the oil cup is stored to nearly 90% full, the filling of the insulating oil is stopped. The vacuum oil filling method for an oil pressure equalizer as claimed in claim 1, wherein the aforementioned steps are repeated 15 times, and the vacuum state is maintained for 12 hours after completion.

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