CN202007455U

CN202007455U - Automatic water drainage device of transformer accident oil pool

Info

Publication number: CN202007455U
Application number: CN2010206669986U
Authority: CN
Inventors: 刘峰; 王开红; 张守玉; 卢会东; 张小涛
Original assignee: LUONING POWER SUPPLY Co
Current assignee: LUONING POWER SUPPLY Co
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2011-10-12
Anticipated expiration: 2020-12-20

Abstract

The utility model discloses an automatic water drainage device of a transformer accident oil pool, which comprises a water level detection control circuit, a blocking signal circuit and a transformer accident oil pool lower groove. A water level detection electrode A and a water level detection electrode B of the water level detection control circuit are electrically connected to an input end of a time base integrated circuit IC via the blocking signal circuit, an output end of the time base integrated circuit IC is electrically connected to a relay K via a transistor VT, a contact switch K-K of the relay is electrically connected to an alternating-current 220V power source via a water pump motor, and the water pump motor, the water level detection electrode A and the water level detection electrode B are located in the transformer accident oil pool lower groove arranged at the bottom of the transformer accident oil pool. The automatic water drainage device can lead the transformer accident oil pool to drain water automatically, realizes double-security control of a transformer, can prevent a water pump from being started to drain oil when the transformer accident oil pool drains oil, guarantees oil storage capacity of the transformer accident oil pool, and is an important preventive measure for safety fire-fighting operation of an unattended substation.

Description

The Transformer Emergency Oil Pond self-draining arrangement

Technical field

The utility model relates to electrical production security against fire prevention technique field, relates in particular to a kind of Transformer Emergency Oil Pond self-draining arrangement.

Background technology

China's power transformer is installed out of doors owing to extreme weather or sleety weather at present, and sleet water can enter emergency oil pond from the transformer pond and occupy the emergency oil pond capacity now by manual patrol inspection draining.Most of transformer station realizes unattended, and main equipment is realized " five shake " function, and supporting facility does not catch up with the unattended substation demand.

Summary of the invention

For solving the primitive method of leaning on artificial drainage in the Transformer Emergency Oil Pond after the water inlet, the sleety weather water inlet is failed in time, and discharge occupies the oil sump capacity, after transformer oil catches fire under the accident condition, emergency oil pond off-capacity when draining the oil, transformer oil are caught fire and are burnt the transformer breaking out of fire and spread accident or accident and enlarge.The utility model provides a kind of Transformer Emergency Oil Pond self-draining arrangement, can realize the automatic draining of transformer oil sump.

In order to realize the foregoing invention purpose, the utility model adopts following technical scheme:

A kind of Transformer Emergency Oil Pond self-draining arrangement comprises: water level detecting and controlling circuit, block signal circuit, Transformer Emergency Oil Pond low groove; Described water level detecting and controlling circuit is electrically connected to time-base integrated circuit IC input by surveying water level detecting electrode A and electrode B by the block signal circuit, and time-base integrated circuit IC output is electrically connected to relay K by transistor VT; Relay contact switch K-K is electrically connected to by pump motor and exchanges the 220v power supply; Described pump motor, water level detecting electrode A and electrode B are positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with.

Described kind of Transformer Emergency Oil Pond self-draining arrangement, the block signal circuit is made up of the floating ball magnetic control switch, the floating ball magnetic control switch is positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with, and the ball float of floating ball magnetic control switch is identical with transformer oil proportion.

Described Transformer Emergency Oil Pond self-draining arrangement, the power supply of water level detecting and controlling circuit is electrically connected to commutation diode VD1-VD4 by alternating voltage 220v through power transformer T step-down, by producing the operating voltage of direct current 12V voltage (Vcc) as IC after the capacitor C1 filtering.

Owing to adopt as above technical scheme, the utlity model has following superiority:

A kind of Transformer Emergency Oil Pond self-draining arrangement, the performance that utilization oil is non-conductive and water conducts electricity, the self-draining arrangement misoperation that oil-insulation decline conduction causes when adopting the electrode detector water level detection circuit to consider Accident of Transformer again.Utilize oil and water proportion different mining can prevent to survey the self-draining arrangement misoperation that water level detecting electrode A and electrode B are made moist and caused with ball float and magnetic switch exclusive circuit signal.Because emergency oil pond automatically draining is met the transformer pasta and raise in the pond and do not start purpose that water pump reaches invention and do not enlarge accident the transformer means of escape of catching fire is played an important role, make the development trend of unattended substation fill up the automatic draining of China's emergency oil pond and realize dual fail-safe control and can effectively guarantee the drain the oil technological gap of Shi Buhui startup water pump oil extraction of Transformer Emergency Oil Pond oil tankage and Accident of Transformer.Be the firemanic important preventive action of unattended substation safety; Superiority is as follows:

1. the utility model utilizes oil and water proportion different mining with ball float and magnetic switch exclusive circuit signal, can prevent to survey the self-draining arrangement misoperation that water level detecting electrode A and electrode B are made moist and caused, the dual fail-safe of realization transformer is controlled.

2, the utility model is provided with low groove in the Transformer Emergency Oil Pond bottom, realizes that draining guarantees the Transformer Emergency Oil Pond oil tankage automatically.

Figure of description

Fig. 1 is the circuit theory diagrams of Transformer Emergency Oil Pond self-draining arrangement;

The specific embodiment

As shown in Figure 1: a kind of Transformer Emergency Oil Pond self-draining arrangement comprises: water level detecting and controlling circuit, block signal circuit, Transformer Emergency Oil Pond low groove; Described water level detecting and controlling circuit is electrically connected to time-base integrated circuit IC input by surveying water level detecting electrode A and electrode B by the block signal circuit, and time-base integrated circuit IC output is electrically connected to relay K by transistor VT; Relay contact switch K-K is electrically connected to by pump motor and exchanges the 220v power supply; Described pump motor, water level detecting electrode A and electrode B are positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with.

Described block signal circuit is made up of the floating ball magnetic control switch, and floating ball magnetic control switch FK is positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with, and the ball float of floating ball magnetic control switch FK is identical with transformer oil proportion.The power supply of described water level detecting and controlling circuit is electrically connected to commutation diode VD1-VD4 by alternating voltage 220v through power transformer T step-down, by producing the operating voltage of direct current 12V voltage (Vcc) as time-base integrated circuit IC after the capacitor C1 filtering.

Time-base integrated circuit IC is connected into Schmidt trigger circuit with relevant peripheral cell.When water level reaches to high water level electrode B place in emergency oil pond, ball float moves up, floating ball magnetic control switch FK conducting, 2 pin of time-base integrated circuit IC are high level, the trigger upset of time-base integrated circuit IC inside, from 3 pin output low levels, make control transistor VT conducting, the relay K adhesive, its constant open contact is connected, pump motor running work, emergency oil pond begins outside draining.

When drawdown in the emergency oil pond during to low water level electrode A place, oil sump bottom, ball float moves down, floating ball magnetic control switch FK disconnects, the 2 pin voltages of time-base integrated circuit IC become low level simultaneously, and the trigger upset is from 3 pin output high level, VT is ended, relay K is in release conditions, and its contact disconnects, and water pump stops draining.

Claims

1. a Transformer Emergency Oil Pond self-draining arrangement is characterized in that: comprising: water level detecting and controlling circuit, block signal circuit, Transformer Emergency Oil Pond low groove; Described water level detecting and controlling circuit is electrically connected to time-base integrated circuit IC input by surveying water level detecting electrode A and electrode B by the block signal circuit, and time-base integrated circuit IC output is electrically connected to relay K by transistor VT; Relay contact switch K-K is electrically connected to by pump motor and exchanges the 220v power supply; Described pump motor, water level detecting electrode A and electrode B are positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with.

2. Transformer Emergency Oil Pond self-draining arrangement according to claim 1, it is characterized in that: the block signal circuit is made up of the floating ball magnetic control switch, the floating ball magnetic control switch is positioned at the Transformer Emergency Oil Pond low groove that the Transformer Emergency Oil Pond bottom is provided with, and the ball float of floating ball magnetic control switch is identical with transformer oil proportion.

3. Transformer Emergency Oil Pond self-draining arrangement according to claim 1, it is characterized in that: the power supply of water level detecting and controlling circuit is electrically connected to commutation diode VD1-VD4 by alternating voltage 220v through power transformer T step-down, by producing the operating voltage of direct current 12V voltage (Vcc) as IC after the capacitor C1 filtering.