CN215451120U - Transformer with switch oil conservator - Google Patents

Abstract

The utility model discloses a transformer with a switch oil conservator, comprising: switch stores up oil tank, crosses oily valve, sets up the oil filling and draining valve interface and the oil supply mouth and the oil drain plug of setting at switch oil storage tank top of switch oil storage tank bottom, the oil filling and draining valve interface passes through pipe connection in crossing oily valve, the oil drain plug with the switch oil storage tank top the cooperation of oil supply mouth is airtight. The oil outlet and the oil filling port are separated, and the oil level is adjusted under the action of gravity, so that the normal operation of the transformer is guaranteed, and time and labor are saved.

Description

Transformer with switch oil conservator

Technical Field

The utility model relates to the field of transformer oil storage, in particular to a transformer with a switch oil conservator.

Background

In some special cases, the substation is required to regulate the grid voltage without power interruption, and therefore some transformers are equipped with on-load switches. Because the electric arc generated when the load switch is switched is extinguished by the oil, the oil is easy to deteriorate, and in order to prevent the oil from polluting the transformer body, the transformer provided with the load switch must be provided with a switch oil conservator. The switch oil conservator and the transformer body oil conservator have the same outer diameter and are welded into a whole, are not communicated with each other and have the same operation principle as the transformer body oil conservator.

In oil-filled transformers, the internal insulation of the switch conservator is generally insulated by means of insulating oil. But insulating oil can receive the influence of temperature, because expend with heat and contract with cold, so when temperature variation, insulating oil's volume also very has certain change, just need carry out oiling or arrange oil and adjust insulating oil's volume when this kind of time, among the prior art, generally arrange oil or annotate oil through setting up a valve of adjusting the oil mass.

However, there are some problems in adjusting the oil mass through only one valve among the prior art, and when the valve setting was at the top of switch oil conservator, the oil extraction was more troublesome, and when the valve setting was in the bottom of switch oil conservator, the oiling was more troublesome. It is impossible to discharge and fill oil conveniently at the same time.

Disclosure of Invention

The utility model overcomes the defects of complex appearance structure, high cost and incomplete solution to humidity change of a switch oil conservator in the prior art, provides a transformer with the switch oil conservator, and adopts the following technical scheme to achieve the aim: a transformer equipped with a switch conservator, comprising: switch stores up oil tank, crosses oily valve, sets up the oil filling and draining valve interface and the oil supply mouth and the oil drain plug of setting at switch oil storage tank top of switch oil storage tank bottom, the oil filling and draining valve interface passes through pipe connection in crossing oily valve, the oil drain plug with the switch oil storage tank top the cooperation of oil supply mouth is airtight.

In a preferred embodiment of the utility model, the oil conservator further comprises a moisture absorber, the bottom of the switch oil conservator is also provided with a moisture absorption interface, and the moisture absorber is connected to the moisture absorption interface through a pipeline.

In a preferred embodiment of the utility model, a dehumidification pipeline is arranged inside the switch oil conservator, one end of the dehumidification pipeline is connected to the moisture absorption interface, and the other end of the dehumidification pipeline is positioned between the insulating oil liquid level and the top wall of the switch oil conservator.

In a preferred embodiment of the utility model, a switch gas relay interface is arranged at the bottom of the oil conservator, the switch gas relay interface is connected to one end of the gas relay through a pipeline, and the other end of the gas relay is connected to the on-load tap-changer through a pipeline.

In a preferred embodiment of the utility model, an oil conservator end cover is arranged on one side of the switch oil conservator, the oil conservator end cover is fixedly connected with a shell of the switch oil conservator, and the oil conservator end cover covers the side face of the switch oil conservator.

In a preferred embodiment of the utility model, a sealing gasket is arranged between the end cover of the oil conservator and the shell of the switch oil conservator, and the sealing gasket is matched with the size of the side opening of the shell of the switch oil conservator.

In a preferred embodiment of the utility model, a buoy is arranged inside the switch oil conservator.

In a preferred embodiment of the utility model, an oil level gauge is arranged on one side of the switch oil conservator, and the oil level gauge generates and displays oil level reading inside the switch oil conservator according to the position of the float.

In a preferred embodiment of the present invention, the switch oil conservator further comprises a body oil conservator, and the body oil conservator is fixedly connected with the switch oil conservator.

The utility model solves the defects in the background technology, and has the following beneficial effects:

(1) the oil outlet and the oil filling port are separated, and the oil level is adjusted under the action of gravity, so that the normal operation of the transformer is guaranteed, and time and labor are saved.

(2) The technical scheme provided by the utility model can effectively avoid the possibility that water enters the oil conservator through the upper moisture absorption interface.

(3) A large operable space is reserved on the upper portion of the oil conservator, the oil conservator is more convenient to operate when oil is replenished through the oil replenishing port, and the outward splashing of transformer oil caused by inconvenience in operation is avoided.

(4) The transformer provided by the utility model has the characteristics of high mechanical strength, safety, reliability, convenience in disassembly, simplicity in manufacture, practicability and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a transformer equipped with a switch conservator according to an embodiment of the present invention.

The reference numerals are as follows: 1. an on-load tap-changer; 2. a body oil conservator; 3. a switch oil conservator; 301. Switching a gas relay interface; 302. a moisture absorption interface; 303. an oil injection and drainage valve; 304. an oil drain plug; 305. A gasket; 306. an end cap; 307. floating; 308. an oil level gauge; 309. a dehumidification pipeline; 401. a gas relay; 402. a moisture absorber; 403. and an oil passing valve.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, the transformer with the switch oil conservator comprises an on-load tap changer 1, a body oil conservator 2 and a switch oil conservator 3, wherein the on-load tap changer 1 is connected with the switch oil conservator 3, and the body oil conservator 2 is fixedly connected with the switch oil conservator 3.

Still include oil passing valve 403, set up in the notes fuel outlet valve interface 303 of switch oil storage cabinet 3 bottom and set up at the benefit hydraulic fluid port and the drain plug 304 of switch oil storage cabinet 3 top, annotate the fuel outlet valve interface 303 and pass through pipe connection in oil passing valve 403, the drain plug 304 is airtight with the benefit hydraulic fluid port cooperation at switch oil storage cabinet 3 top.

Specifically, when the internal oil level of the switch conservator 3 is too high, oil is drained through the oil passing valve 403 at the bottom, and when the internal oil level of the switch conservator 3 is too low, oil is filled through the oil drain plug 304 at the top. Therefore, by means of the action of gravity, the oil level is adjusted, the normal operation of the transformer is guaranteed, and time and labor are saved.

Continuing to refer to fig. 1, in particular, the bottom of the switch oil conservator 3 is also provided with two interfaces, namely a switch gas relay interface 301 and a moisture absorption interface 302.

Wherein, the bottom of oil conservator is provided with switch gas relay interface 301, and switch gas relay interface 301 passes through the pipe connection in gas relay 401's one end, and gas relay 401's the other end passes through the pipe connection in on-load tap-changer 1. Here, a switch gas relay 301 is installed at the bottom of the oil conservator, so that the transformer can be protected from normal operation. If a discharge fault occurs in the transformer, the discharge arc decomposes the transformer oil to generate various characteristic gases such as methane, acetylene, oxygen, carbon monoxide, ethylene, ethane and the like, and the more serious the fault is, the larger the gas amount is. When the amount of gas is too large or the flow rate of gas in the switch conservator 3 is too high, the contacts of the gas relay 401 are actuated and a protection signal is sent.

Moisture absorption interface 302 is connected with desiccator 402 through the pipeline to moisture absorption interface 302 forms gaseous intercommunication through dehumidification pipeline 309 with the inside of switch conservator 3, and the one end of dehumidification pipeline 309 is connected in moisture absorption interface 302, and the other end of dehumidification pipeline 309 is located between insulating oil liquid level and the roof of switch conservator 3. Specifically, since the moisture content in the insulating oil cannot be excessively high, when the moisture content is detected to exceed a safe value, the moisture absorber 402 starts operating to send dry air to the inside of the switch conservator 3, thereby reducing the humidity inside the switch conservator 3. Many moisture absorption interfaces 302 are disposed on the top of the switch conservator 3, and moisture may enter the inside of the switch conservator 3 through the top interface. The moisture absorption port 302 is arranged at the bottom of the switch oil conservator 3, and even if water drops are formed occasionally, the water drops can fall down under the action of gravity and cannot enter the switch oil conservator 3.

Specifically, a float 307 is placed inside the switch oil conservator 3, an oil level indicator 308 is installed on one side of the switch oil conservator 3, which is far away from the body oil conservator 2, and the oil level indicator 308 displays the oil level inside the switch oil conservator 3 according to the position of the float 307. The user can make a quick judgment based on the liquid level displayed by the oil level gauge 308 and adjust the amount of oil in the switch oil conservator 3.

One side that oil conservator 3 kept away from body oil conservator 2 is provided with oil conservator end cover 306, and oil conservator end cover 306 and switch oil conservator 3's casing fixed connection, oil conservator end cover 306 covers switch oil conservator 3's side completely. Be provided with sealed 305 between end cover 306 of oil conservator 3 of switch and the casing of oil conservator 3 of switch, can help the switch to store up oil conservator 3 and seal better, avoid the inside insulating oil of oil conservator 3 of switch to reveal.

In summary, the transformer with the switch oil conservator 3 according to the present invention can make feedback in time according to the humidity in the oil tank and the oil level of the insulating oil, such as discharging dry air to balance the humidity value, and timely filling or discharging oil to ensure the stable operation of the transformer, and the action protection circuit of the gas relay 401 when the gas flow rate is too high. Simple structure, small occupied space and lower processing cost.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. A transformer equipped with a switch oil conservator, comprising: switch stores up oil tank, crosses oily valve, sets up the oil filling and draining valve interface and the oil supply mouth and the oil drain plug of setting at switch oil storage tank top of switch oil storage tank bottom, the oil filling and draining valve interface passes through pipe connection in crossing oily valve, the oil drain plug with the switch oil storage tank top the cooperation of oil supply mouth is airtight.

2. The transformer with the switch oil conservator as claimed in claim 1, wherein: still include the desiccator, the bottom of switch oil storage cabinet still is provided with the moisture absorption interface, the desiccator pass through the pipe connection in the moisture absorption interface.

3. The transformer with the switch oil conservator as claimed in claim 2, wherein: the switch stores up the inside of oil tank and is provided with the pipeline that dehumidifies, the one end of pipeline that dehumidifies connect in the moisture absorption interface, the other end of pipeline that dehumidifies is located insulating oil liquid level with between the roof of switch stores up the oil tank.

4. The transformer with the switch oil conservator as claimed in claim 1, wherein: the bottom of oil conservator is provided with switch gas relay interface, switch gas relay interface pass through the pipe connection in gas relay's one end, gas relay's the other end passes through the pipe connection in on-load tap-changer.

5. The transformer with the switch oil conservator as claimed in claim 1, wherein: one side of switch oil conservator is provided with the oil conservator end cover, the oil conservator end cover with the casing fixed connection of switch oil conservator, the oil conservator end cover covers the side of switch oil conservator.

6. The transformer with the switch oil conservator as claimed in claim 5, wherein: the switch oil conservator is characterized in that a sealing gasket is arranged between an end cover of the oil conservator and a shell of the switch oil conservator, and the sealing gasket is matched with the size of an opening in the side face of the shell of the switch oil conservator.

7. The transformer with the switch oil conservator as claimed in claim 1, wherein: a buoy is arranged in the switch oil conservator.

8. The transformer with the switch oil conservator as claimed in claim 7, wherein: and an oil level gauge is arranged on one side of the switch oil conservator and generates and displays oil level reading inside the switch oil conservator according to the position of the float.

9. The transformer with the switch oil conservator as claimed in claim 1, wherein: still include the body oil conservator, the body oil conservator with switch oil conservator fixed connection.

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