CN203218070U - On-load tap-changer on-line oil cleaner - Google Patents

Abstract

The utility model discloses an on-load tap-changer on-line oil cleaner, comprising a box body with an opening-closing door, an oil inlet flange, an oil outlet flange, an overflowing valve holder, a first filter element seat, a second filter element seat, a pressure-adjusting overflowing valve, an oil pump, a motor, a first filter element, a second filter element, a first pressure sensor, a second pressure sensor, and an electric control box, wherein the oil inlet flange and the oil outlet flange are arranged on the side wall of the box body; the overflowing valve holder, the first filter element seat and the second filter element seat are arranged in the box body and linearly arrayed; the pressure-adjusting overflowing valve is mounted on the overflowing valve holder; the oil pump and the motor are arranged in the box body, and the motor drives the oil pump to work; the first filter element, the second filter element, the first pressure sensor and the second pressure sensor are arranged on the first and second filter element seats; the electric control box is arranged on the upper part in the box body and is internally provided with a PLC (programmable logic controller), a manual control button, an automatic control button and a solid relay; the first and second pressure sensors, the pressure-adjusting overflowing valve and the motor are in control connection with the PLC. All parts in the on-load tap-changer on-line oil cleaner are in modular combination and easy to assemble; oil paths are connected by flange faces and convenient to mount without leakage; the management and matching of an intelligent power station are easy due to the PLC control and high intelligentized degree.

Description

On load tap changer on-line oil cleaning device

Technical field:

The utility model relates to the on-load tap changers of transformers technical field, particularly a kind of on load tap changer on-line oil cleaning device.

Background technology:

The on load tap changer of transformer often has electric arc to produce in handoff procedure between transition contact and the fixed contact, electric arc decomposes transformer oil, thereby pollutes the transformer oil in the switch grease chamber.The on load tap changer of high-power transformer often has special-purpose on-line oil cleaning device, and the transformer oil inside the Pass regularly or automatically splitting carries out filtration, purification.

Present stage widely used on load tap changer on-line oil cleaning device as shown in Figure 1, its critical piece is installed in the casing 101 that the open and close door arranged, concrete structure is at whole oil-distributing plate 105 motor 103, oil pump 104 and first filter core 106, second filter core 107 to be housed, on the top of casing 101 control cabinet 102 is housed, casing is equipped with oil-in flange 108 and oil-out flange 109 outward.Oil-distributing plate is to be formed through machining by the thick aluminium sheet of integral body, and material and processing cost are very high.Mainly be made up of traditional shift knob and relay in the control cabinet 102, intelligent degree is low, can not adapt to the needs of power station intelligent management.

The utility model content:

Technical problem to be solved in the utility model is intended to overcome the deficiency of above-mentioned prior art, and proposes a kind of novel on load tap changer on-line oil cleaning device.

Technical problem to be solved in the utility model can realize by technical scheme:

A kind of on load tap changer on-line oil cleaning device comprises:

Casing with open and close door;

Oil-in flange and oil-out flange on the side box wall of described casing are installed;

The relief valve seat, first filter cartridge seat and second filter cartridge seat that are installed in the described casing and are in line and arrange wherein are connected by flange face between relief valve seat and described first filter cartridge seat, are connected by flange face between first filter cartridge seat and second filter cartridge seat; Be provided with corresponding oil circuit in described relief valve seat, first filter cartridge seat and second filter cartridge seat;

Be installed in the pressure adjustment relief valve on the described relief valve seat or in described relief valve seat, be provided with by structure of relief valve;

Be installed in oil pump and motor in the described casing, the described oil pump work of described motor-driven, the entrance point of described oil pump by oil inlet pipe be connected with described oil-in flange, the arrival end of described pressure adjustment relief valve or structure of relief valve is connected with the port of export of described oil pump, the port of export of described pressure adjustment relief valve or the port of export of structure of relief valve are connected with oil circuit arrival end in the described relief valve seat;

First filter core and first pressure sensor on described first filter cartridge seat are installed, and wherein first filter core is connected with first pressure sensor and is connected with oil circuit in first filter cartridge seat;

Second filter core and second pressure sensor on described second filter cartridge seat are installed, and wherein second filter core is connected with second pressure sensor and is connected with oil circuit in second filter cartridge seat, and second filter core also is connected with described oil-out flange simultaneously;

Be installed in the electric cabinet of described casing internal upper part, be provided with in the described electric cabinet PLC controller, automatically, manual control button and solid-state relay, described first pressure sensor, second pressure sensor, pressure adjustment relief valve and motor and described PLC controller control connection.

In a preferred embodiment of the present utility model, described motor and oil pump are integrated.

Owing to adopted flow through oil-in flange-oil pipe-oil pump-pressure adjustment relief valve or structure of relief valve-first filter cartridge seat-first filter core-second filter cartridge seat-second filter core-oil-out flange of design as above, the indoor transformer oil of circuit-breaker oil of the present utility model to flow back to the switch grease chamber.The utility model arranges pressure sensor in first filter cartridge seat and second filter cartridge seat, dirt in first filter core and second filter core is more, oil flow resistance changes when reaching set point than the bassoon internal pressure, and PLC will stop motor and rotate and send warning, allows more renew cartridge of administrative staff.

The utility model compared with prior art has following outstanding advantage:

1. each component models combination, assembling is simple.

2. oil circuit all connects with flange face, and is easy for installation, not easy to leak.

3.PLC control, intelligent degree height, the management that is easy to intelligent power station is supporting.

Description of drawings:

The former on-line oil cleaning device of Fig. 1 mounting structure schematic diagram.

Fig. 2 this patent on-line oil cleaning device mounting structure schematic diagram.

Embodiment

Further describe the utility model below in conjunction with the drawings and specific embodiments.

Referring to Fig. 2, a kind of on load tap changer on-line oil cleaning device that provides among the figure, comprise a casing 100 with open and close door, oil-in flange 210 on the side box wall 110 of casing 100 and oil-out flange 220, oil-in flange 210 is connected with the oil-out of switch grease chamber, and oil-out flange 220 is connected with the oil return opening of switch grease chamber.

Centre position in casing 100 is equipped with relief valve seat 310, filter cartridge seat 320,330, the arrangement that is in line of relief valve seat 310, filter cartridge seat 320,330, wherein relief valve seat 310 is positioned at the right side of filter cartridge seat 320, filter cartridge seat 330 is positioned at the right side of filter cartridge seat 320, be connected by flange face between relief valve seat 310 and the filter cartridge seat 320, be connected by flange face between filter cartridge seat 320 and the filter cartridge seat 330; In relief valve seat 310, filter cartridge seat 320,330, be provided with corresponding oil circuit.

Pressure adjustment relief valve 410 is installed or directly in relief valve seat 310, is provided with structure of relief valve at relief valve seat 310, be separately installed with filter core 420,430 and pressure sensor 440,450 in filter cartridge seat 320,330.

Motor 510 and oil pump 520 in the on load tap changer on-line oil cleaning device are integrated, be installed on the casing 100 and be positioned at the below of relief valve seat 310, motor 510 drives oil pump 520 work, the entrance point of oil pump 520 by oil inlet pipe 540 be connected with oil-in flange 210, the arrival end of pressure adjustment relief valve 410 or the arrival end of structure of relief valve be connected with the port of export of oil pump 520, the port of export of pressure adjustment relief valve 410 or the port of export of structure of relief valve and relief valve seat 310 interior oil circuit arrival ends are connected; Filter core 320 is connected with pressure sensor 440 and is connected with oil circuit in the filter cartridge seat 320; Filter core 430 is connected with pressure sensor 450 and is connected with oil circuit in the filter cartridge seat 330, and while filter core 450 also is connected with oil-out flange 220.

Top in casing 100 is equipped with electric cabinet 600, be provided with in the electric cabinet 600 the PLC controller, automatically, manual control button and solid-state relay, pressure sensor 440,450, pressure adjustment relief valve 410 and motor 510 and PLC controller control connection.

Above content shows and has described basic principle of the present utility model, principal character and advantage of the present utility model.The personnel of the industry should understand; the utility model is not subjected to the restriction of above-mentioned example; that describes in above-mentioned example and the explanation just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all will fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (2)

1. on load tap changer on-line oil cleaning device comprises:

Casing with open and close door;

Oil-in flange and oil-out flange on the side box wall of described casing are installed;

The relief valve seat, first filter cartridge seat and second filter cartridge seat that are installed in the described casing and are in line and arrange wherein are connected by flange face between relief valve seat and described first filter cartridge seat, are connected by flange face between first filter cartridge seat and second filter cartridge seat; Be provided with corresponding oil circuit in described relief valve seat, first filter cartridge seat and second filter cartridge seat;

Be installed in the pressure adjustment relief valve on the described relief valve seat or directly in described relief valve seat, be provided with structure of relief valve;

Be installed in oil pump and motor in the described casing, the described oil pump work of described motor-driven, the entrance point of described oil pump by oil inlet pipe be connected with described oil-in flange, the arrival end of described pressure adjustment relief valve or the arrival end of structure of relief valve be connected with the port of export of described oil pump, the port of export of described pressure adjustment relief valve or the port of export of structure of relief valve are connected with oil circuit arrival end in the described relief valve seat;

First filter core and first pressure sensor on described first filter cartridge seat are installed, and wherein first filter core is connected with first pressure sensor and is connected with oil circuit in first filter cartridge seat;

Second filter core and second pressure sensor on described second filter cartridge seat are installed, and wherein second filter core is connected with second pressure sensor and is connected with oil circuit in second filter cartridge seat, and second filter core also is connected with described oil-out flange simultaneously;

Be installed in the electric cabinet of described casing internal upper part, be provided with in the described electric cabinet PLC controller, automatically, manual control button and solid-state relay, described first pressure sensor, second pressure sensor, pressure adjustment relief valve and motor and described PLC controller control connection.

2. on load tap changer on-line oil cleaning device as claimed in claim 1 is characterized in that described motor and oil pump are integrated.

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