CN214956328U

CN214956328U - Transformer automatic exhaust device and transformer

Info

Publication number: CN214956328U
Application number: CN202120888920.7U
Authority: CN
Inventors: 郑鹏; 左鹏; 史新玉; 杨昭
Original assignee: Shandong Feiyang Chemical Co ltd
Current assignee: Shandong Feiyang Chemical Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-30
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses an automatic exhaust device of a transformer and the transformer, wherein the exhaust device of the transformer comprises a gas relay, an exhaust pipe connected to the gas relay, and a manual exhaust valve and an automatic exhaust valve which are arranged on the exhaust pipe; the gas relay is arranged on a pipeline between an oil conservator of the transformer and an oil tank of the transformer. The manual exhaust valve is located at the top of the gas relay, the exhaust pipe and the automatic exhaust valve connecting section are arranged in the vertical direction, and the automatic exhaust valve is located at the top of the exhaust pipe. The manual exhaust valve of the gas relay is opened, the gas outlet pipe is connected to the gas outlet of the manual exhaust valve, the automatic exhaust valve is installed on the gas outlet pipe, and therefore when gas is generated in the transformer, the gas can be exhausted through the automatic exhaust valve, the safe operation of the transformer is guaranteed, manual exhaust operation is not needed, and the personal safety of transformer substation workers is guaranteed.

Description

Transformer automatic exhaust device and transformer

Technical Field

The utility model relates to a potential device among the power transmission system specifically is a transformer self-bleeding device and transformer.

Background

A transformer is a transformation device used in a power transmission system, and has a very important role in a power grid system. The transformer is when the operation process, and internal coil can produce a large amount of heats, if can not in time with the heat effluvium that the coil produced, then can influence the normal use of transformer, so, use the producer can the thousands of square hundreds of meters installation oil pump carry out circulative cooling device, like this, the inside oil of transformer can constantly flow, and inside can produce the flammable gas, atmospheric pressure makes the oil level descend. Because the existence of gas can bring very big harm for the transformer operation, so, install exhaust apparatus on the transformer, often adopt buchholz relay to exhaust the transformer among the prior art, however, current buchholz relay exhaust during operation, the transformer must have a power failure, need the transformer simultaneously, the cooperation work of departments such as electric power maintenance, dispatch, and, still need to overhaul the guardian and the operator of teams and groups to arrive at the scene in the operation process of exhausting at every turn, electric power maintainer invests a large amount of efforts, many defects are operated like this: delay in power supply and influence on safe production; the working strength of the transformer maintainers is increased; the working efficiency is reduced; the risk is high when the operator carries out the exhaust operation; and the air cannot be exhausted in time, so that the operation of the transformer is seriously influenced.

The patent application for disclosing the invention provides a structural scheme of an automatic exhaust device of a gas relay (application number: CN 202010445045.5): the transformer on-load tap-changer comprises an on-load tap-changer oil chamber arranged on a transformer, a gas relay communicated with the on-load tap-changer oil chamber through a gas connecting pipe, a vent plug arranged at the top of the gas relay and an on-load tap-changer conservator communicated with the vent plug, wherein the gas relay is communicated with the on-load tap-changer conservator through an conservator connecting pipe, and a solenoid valve is arranged on a pipeline between the vent plug and the on-load tap-changer conservator; according to the technical scheme, when the gas relay sends a light gas action signal, the action signal can be conducted to the electromagnetic valve, the electromagnetic valve is automatically opened, and gas accumulated in the gas relay is discharged.

However, the structure is complicated, and the buchholz relay is required to have a light-watt signal contact, so that the gas is discharged by sending a signal to the solenoid valve through the buchholz relay, and when the solenoid control is in error, the gas cannot be discharged.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple structure, the reliable transformer automatic exhaust device of exhausting, the technical scheme who takes is:

an automatic exhaust device of a transformer comprises a gas relay, an exhaust pipe connected to the gas relay, and a manual exhaust valve and an automatic exhaust valve which are arranged on the exhaust pipe; the gas relay is arranged on a pipeline between an oil conservator of the transformer and an oil tank of the transformer.

Preferably, manual discharge valve is located buchholz relay's top, and blast pipe and automatic discharge valve linkage segment are the vertical direction setting, automatic discharge valve is located the top of blast pipe.

The utility model discloses a further embodiment, in buchholz relay, set up first level sensor to quarter distance position department apart from inner chamber top third, first level sensor is connected to the alarm, and when buchholz relay internal transformer oil liquid level reachd first level sensor, the alarm sends out the police dispatch newspaper, and the suggestion transformer oil liquid level is too high, will take place to overflow, reminds the staff to close manual discharge valve.

Further, set up second level sensor at buchholz relay inner chamber top, second level sensor is connected to the PLC controller, on the blast pipe, set up the solenoid valve between manual discharge valve and the automatic discharge valve, the PLC controller is connected to the solenoid valve. Because second level sensor position is higher than first level sensor, when the interior transformer oil liquid level of buchholz relay reachd first level sensor, the alarm sends out the police dispatch newspaper, reminds the staff to close manual discharge valve, if the staff does not in time close manual discharge valve, when the liquid level reached second level sensor, PLC controller control solenoid valve self-closing. The exhaust valve is suitable for ensuring the smooth exhaust effect at night or in an unsupervised state.

The utility model also provides a transformer, which comprises the automatic exhaust device of the transformer, wherein the conservator of the transformer is positioned above the oil tank; the horizontal position of an automatic exhaust valve of the automatic exhaust device of the transformer is higher than that of a transformer conservator, so that automatic exhaust is facilitated.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the gas-discharge valve is reasonable and compact in structure and convenient to use, the gas outlet pipe is connected to the gas outlet of the manual exhaust valve by opening the manual exhaust valve of the gas relay, and the automatic exhaust valve is arranged on the gas outlet pipe, so that when gas is generated in the transformer, the gas can be discharged through the automatic exhaust valve, the safe operation of the transformer is ensured, manual exhaust operation is not needed, and the personal safety of transformer substation workers is guaranteed;

2. the utility model also provides a PLC controller guarantees the exhaust effect under night or the unmanned supervision state through automatic control.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a schematic structural view of an automatic exhaust device for a transformer according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an automatic exhaust device for a transformer according to an embodiment 2 of the present invention.

The gas exhaust valve comprises a gas relay 1, a manual exhaust valve 2, an exhaust pipe 3, an automatic exhaust valve 4, a transformer 5, an oil conservator 6, a first liquid level sensor 7, an alarm 8, a second liquid level sensor 9, a PLC 10 and an electromagnetic valve 11.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Example 1: automatic exhaust device of transformer

As shown in fig. 1, the gas relay comprises a gas relay 1, an exhaust pipe 3 connected to the gas relay 1, and a manual exhaust valve 2 and an automatic exhaust valve 4 arranged on the exhaust pipe 3; the gas relay 1 is installed on a pipe between an oil conservator 6 of the transformer 5 and an oil tank of the transformer 5.

Manual discharge valve 2 is located buchholz relay 1's top, and blast pipe 3 sets up for the vertical direction with automatic discharge valve 4 linkage segment, automatic discharge valve 4 is located the top of blast pipe 3.

The manual exhaust valve 2 on the gas relay is opened by a worker, when gas is generated in the transformer, the gas is exhausted through the automatic exhaust valve 4 at the other end of the exhaust pipe 3, the safe operation of the transformer is ensured, manual exhaust operation is not needed, and the personal safety of the transformer substation staff is ensured.

An operator can keep the opening state of the manual exhaust valve 2 by observing through a fuel level sight glass of the gas relay as long as the transformer oil is ensured not to overflow; when the transformer oil is about to overflow, the manual exhaust valve 2 is closed.

Example 2: automatic exhaust device of transformer

As an improvement to the above embodiment, as shown in fig. 2, a first liquid level sensor 7 is arranged in the buchholz relay at a distance from one third to one fourth of the top of the inner cavity, the first liquid level sensor 7 is connected to an alarm 8, and when the liquid level of transformer oil in the buchholz relay reaches the first liquid level sensor 7, the alarm 8 gives an alarm to prompt that the liquid level of the transformer oil is too high and overflow is about to occur, and to prompt a worker to close the manual exhaust valve 2.

As the further improvement to this structure, set up second level sensor 9 at buchholz relay inner chamber top, second level sensor 9 is connected to PLC controller 10, on blast pipe 3, set up solenoid valve 11 between manual discharge valve 2 and the automatic discharge valve 4, PLC controller 10 is connected to solenoid valve 11. Because second level sensor 9 position is higher than first level sensor 7, when the transformer oil liquid level arrived first level sensor 7 in the buchholz relay, alarm 8 sent out the police dispatch newspaper, reminded the staff to close manual discharge valve 2, if the staff did not in time close manual discharge valve 2, when the liquid level reached second level sensor 9, PLC controller 10 control solenoid valve 11 self-closing. The exhaust valve is suitable for ensuring the smooth exhaust effect at night or in an unsupervised state.

Example 3:

a transformer, as shown in FIG. 1, comprises the above-mentioned automatic exhaust device, and the conservator 6 of the transformer is also called oil conservator and is located above the oil tank.

The automatic exhaust valve is a device for exhausting air in the operation process of the heating ventilation system and the heating ventilation air-conditioning system. Different with the solenoid valve, need not electromagnetic control, the utility model discloses creatively be applied to the self-bleeding of transformer with it, guarantee carminative reliability. It should be noted that: when the automatic exhaust valve is installed, the automatic exhaust valve is required to be vertically installed, and an internal buoy is ensured to be in a vertical state so as to avoid influencing exhaust; and needs to be installed at the highest point of the system.

The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the present invention can be applied to other applications without any modification.

Claims

1. An automatic exhaust device of a transformer is characterized by comprising a gas relay, an exhaust pipe connected to the gas relay, and a manual exhaust valve and an automatic exhaust valve which are arranged on the exhaust pipe; the gas relay is arranged on a pipeline between an oil conservator of the transformer and an oil tank of the transformer.

2. The automatic transformer exhaust device according to claim 1, wherein the manual exhaust valve is located at the top of the buchholz relay, the exhaust pipe and the automatic exhaust valve connecting section are vertically arranged, and the automatic exhaust valve is located at the top of the exhaust pipe.

3. The automatic transformer exhauster as claimed in claim 2, wherein a first liquid level sensor is provided in the buchholz relay at a distance of one third to one fourth of the top of the inner cavity, and the first liquid level sensor is connected to an alarm.

4. The automatic exhaust device for the transformer according to claim 3, wherein a second liquid level sensor is arranged at the top of the inner cavity of the gas relay, the second liquid level sensor is connected to a PLC (programmable logic controller), an electromagnetic valve is arranged on the exhaust pipe and between the manual exhaust valve and the automatic exhaust valve, and the PLC is connected to the electromagnetic valve.

5. A transformer, characterized by comprising the automatic exhaust device of the transformer according to any one of claims 1 to 4, wherein a conservator of the transformer is positioned above an oil tank; the horizontal position of an automatic exhaust valve of the automatic exhaust device of the transformer is higher than that of an oil conservator of the transformer.