CN2405301Y

CN2405301Y - Energy-saving, environmental protection and light wt. electric power transformer

Info

Publication number: CN2405301Y
Application number: CN 00224125
Authority: CN
Inventors: 肖光希
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-26
Filing date: 2000-01-26
Publication date: 2000-11-08
Anticipated expiration: 2010-01-26

Abstract

The utility model relates to an energy-saving and environment-protecting light-weight power transformer, which comprises E-shaped iron cores, a non-magnetic clamp, an elastic oil tank, an anti-theft distribution box, and a high impedor, wherein, the E-shaped iron cores have two corresponding groups; after the two groups of the E-shaped iron cores are sheathed with coils, the iron cores are glued together by magnetic conducting gum, are fixed by the clamp, and are arranged in the oil tank; the clamp has two non-magnetic clamping devices; the whole transformer is arranged on a base. The utility model has the advantages of small vibration, high heat stability, small magnetic loss, no eddy current loss caused by the clamp, convenient installation and management for electric power departments, and low cost.

Description

A kind of novel energy-conserving, environmental protection, light-duty power transformer

The utility model is a kind of novel energy-conserving, environmental protection, light-duty power transformer, belongs to the power supply system capital equipment.

In electric power system, power transformer is widely used in and raises or reduction voltage, exchanging electric current, transforming impedance or change phase place, voltage is generally higher, capacity is also bigger, and the power transformer that uses in existing electric power system exists following weak point: 1, the transformer magnetic conduction sheet adopts stacked assembly unit, and interface has mitre or directly stitches.In iron core magnetic closed-loop path interface is everywhere arranged, this all gapped existence of interface everywhere, because the magnetic line of force jumps and mistake at gap location, transformer core can produce vibration, makes its dynamic stability variation, life-span and safety are influenced; Also make a noise contaminated environment; Bigger magnetic resistance is caused in the gap everywhere, and magnetic loss is bigger, and magnetic loss changes heat energy into and distributes, and the transformer heating is outstanding, also wastes electric energy simultaneously.2, existing volume iron core adopts wound coil, and shortcoming is to turn over line, can only make miniature transformer, and power is little.3, have a kind of employing amorphous alloy material to do conducting magnet core at present, its process using thin slice is rolled into iron core, but its technology can only be made five posts, four shaped as frame iron cores, and three-winding formula, its shortcoming are that three-winding formula consume material is many, cost is high than three posts, two shaped as frame iron cores.When 4, above-mentioned electrical transformer cores is assembled, its folder adopts four iron and steel magnetic conductors, four iron and steel magnetic conduction screw rods of its fixing up and down employing, iron clamp spare constitutes the magnetic closed-loop path with the iron screw rod, iron clamp spare causes eddy current loss with the iron screw rod during transformer work, cause the transformer heating, waste energy equally.5, the heat radiation of oil tank of transformer is to take bend pipe heat radiation, has plenty of the heat radiation of the corrugated plate of employing, and its transformer bulky is not easy to transportation and installs, and it is big to take the domain, damages easily.6, do not have metering device and switching protective device at 10 kilovolts/400 volts transformers, and the lead-in wire of building a house is specially entered, device measuring screen and switchboard etc.; its cost is higher than the price of several times in transformer; the user is beyond affordability, the also bad management of electric industry department electric weight, and the power stealing situation often takes place.7,10 kilovolts/400 volts transformer earth impedance are little, are easy to single-line to ground fault, cause transformer to burn out, and the electric shock casualty accident easily takes place in the animal contact.

The purpose of this utility model aim to provide a kind of vibrate little, Heat stability is good, magnetic loss little, do not have eddy current loss that folder causes, be convenient to the power transformer of the relatively low novel energy-conserving of power department installation administration and cost, environmental protection, metering.

For reaching above purpose, the utility model has been taked following technical scheme: comprise E font iron core 1, folder 4 and fuel tank 10, E font iron core 1 has corresponding two groups, put behind the coil glued together and be installed in the fuel tank after fixing by folder 4 by magnetic-conductive adhesive, whole transformer is installed on the base, it is characterized in that:

A: described E font iron core 1 is rolled into the back by two two pillar iron cores 7 continuously by a peripheral iron core 8 and forms from the centre cut-out, described two pillar iron cores 7 are that the magnetic conducting band material by different in width is rolled into stepped cross-section and placed side by side continuously, described peripheral iron core 8 twists in periphery on above-mentioned two the two pillar iron cores 7 continuously for the magnetic conducting band material of different in width, and the cross section of this periphery iron core 8 also becomes stairstepping; The E font iron core that coil is enclosed within 1, two symmetry of E font iron core forms annular core, i.e. a toroidal transformer to lumping together by magnetic-conductive adhesive gummed back;

B: have two non-magnetic conduction anchor clamps 3 in the described folder 4 at least, constitute by anchor clamps standing screw 5 and upper and lower standing screw 9 with other two anchor clamps; Be that each closed folder loop all comprises non-magnetic conduction anchor clamps 3 at least;

C: described fuel tank 10 adopts metal materials to make, and its shell is a waveform, and the wrinkle direction of ripple can be parallel with the iron core winding direction, and become the lateral-cut fuel tank, also can be perpendicular and become straight corrugated tank with the iron core direction;

D: in 10 kilovolts/400 volts transformers, also comprise " a 7 " font distribution box 11, this distribution box 11 is fixed on a side of transformer case casing, covering low pressure porcelain vase 13 and conducting rod 16 ground oabc three-phase and five-pole pile crowns, this distribution box 11 is divided between measuring instrument and two of switch power distribution stations, about its form is divided two or two up and down, one is dress gauge table and instrument transformer and disjunction protector, and another is that earth leakage protective air switch of short circuit and disjunction protector are housed; Also be provided with dodge gate 14 on the distribution box 11; The chamber door of dress gauge table can be locked and lead-sealable actuation, and the chamber door of dress switch can be by user's self-locking.

E: also comprise a high impedance device 15 in 10 kilovolts/400 volts transformers, this high impedance device 15 is connected between zero line and the ground wire, and it can be a diode, also can be other unidirectional conducting components and parts.

Because the utility model has adopted special E font annular core, folder and screw rod do not constitute the magnetic closed-loop path, have toroidal membrane, distribution box and high impedance device, have the following advantages: 1, coiling is convenient, can make more powerful transformer; 2, can save lot of materials, reduce manufacturing cost; 3, eliminated the eddy current loss of transformer core folder; 4, increase the elasticity and the bloated property of splashing of the fuel tank of transformer, be convenient to the manufacturing of full tightness fuel tank, transportation, easy for installation.In sum, the utility model be a kind of vibrate little, Heat stability is good, magnetic loss little, do not have eddy current loss that folder causes, be convenient to the relatively low a kind of novel energy-conserving of power department installation administration and cost, environmental protection, light-duty power transformer.

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is E font iron core and folder structural representation;

Fig. 2 is an E font core structure schematic diagram;

Fig. 3 is an E font iron core horizontal section schematic diagram;

Fig. 4 is a lateral-cut fuel tank schematic diagram;

Fig. 5 is the distribution box front schematic view;

Fig. 6 is that distribution box A is to schematic diagram;

Fig. 7 is a high impedance device circuit connection diagram;

Fig. 8 is straight corrugated tank schematic diagram.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of novel energy-conserving of present embodiment, environmental protection, light-duty power transformer comprise E font iron core 1, folder 4 and fuel tank 10, E font iron core 1 has corresponding two groups, put behind the coil glued togetherly and be installed in the fuel tank 10 after fixing by folder 4 by magnetic-conductive adhesive, whole transformer is installed on the base.Wherein:

Described E font iron core 1 is cut off from the centre after by peripheral iron core 8 continuous reelings by two two pillar iron cores 7 and forms, described two pillar iron cores 7 are that the magnetic conducting band material by different in width is rolled into stepped cross-section and placed side by side continuously, described peripheral iron core 8 twists in periphery on above-mentioned two the two pillar iron cores 7 continuously for the magnetic conducting band material of different in width, and the cross section of this periphery iron core 8 also becomes stairstepping; The E font iron core that coil then is enclosed within 1, two symmetry of E font iron core forms annular core, i.e. a toroidal transformer to lumping together by magnetic-conductive adhesive gummed back;

Comprise two non-magnetic conduction anchor clamps 3 in the described folder 4, constitute by anchor clamps standing screw 5 and upper and lower standing screw 9 with other two anchor clamps; Be that each closed folder loop all comprises non-magnetic conduction anchor clamps 3 at least, they are fixtures of stationary transformer iron core and coil, fast non-magnetic screw rod of institute and folder make transformer when the work operation, screw rod can not become the magnetic closed-loop path with folder, and promptly each closed folder loop all comprises non-magnetic conduction anchor clamps at least;

Described fuel tank 10 adopts metal materials to make, and its shell is a waveform, and the wrinkle direction of ripple can be parallel with the iron core winding direction, and become the lateral-cut fuel tank, also can be perpendicular and become straight corrugated tank with the iron core direction; Having well splashes rises and contraction elasticity.Normal temperature oily injection transformer case in, temperature improves when transformer puts into operation, oil is splashed naturally and is risen, and toroidal membrane is also followed to splash and risen; When temperature decline, oil shrinks naturally, and toroidal membrane also shrinks thereupon.In addition, wave-like toroidal membrane and extraneous air contact area are big, and radiating effect is better.

As Fig. 5, Fig. 6, if in 10 kilovolts/400 volts distribution transformer, also comprise " a 7 " font distribution box 11, this distribution box 11 is fixed on a side of transformer case casing, covering low pressure porcelain vase 13 and conducting rod 16 ground oabc three-phase and five-pole pile crowns, this distribution box 11 is divided into two of measuring instrument and switch power distribution stations, its form can be about two or two up and down, one is dress gauge table and instrument transformer and disjunction protector, and another is that earth leakage protective air switch of short circuit and disjunction protector are housed; Distribution box 11 fronts also are provided with dodge gate 14; The chamber door of dress gauge table can be locked and lead-sealable actuation, and the chamber door of dress switch can be by user's self-locking.Also be provided with the transparent table window 18 of seeing on the dodge gate 14, the side has the shutter of being convenient to dispel the heat 19, and the top of distribution box 11 is canopys 17.

As Fig. 7 is high impedance device circuit connection diagram; In 10 kilovolts/400 volts distribution transformer, this high impedance device 15 is connected between zero line and the ground wire, it can be a diode, also can be that other unidirectional conducting components and parts have increased the high impedance device between zero line and earth connection, its objective is the earth impedance that has increased transformer, if during b phase ground short circuit, positive half wave can not constitute the closed-loop path, and negative half-wave can only have 45% voltage, so short circuiting arc is just very little, meeting thunderstorm hour, also can eliminate lightning wave, can protect the safety of transformer, when animal contact phase line, as the ground drying, casualty rate also significantly reduces.

Claims

1, a kind of novel energy-conserving, environmental protection, light-duty power transformer, comprise E font iron core (1), folder (4) and fuel tank (10), E font iron core (1) has corresponding two groups, put behind the coil glued together and be installed in the fuel tank after fixing by folder (4) by magnetic-conductive adhesive, whole transformer is installed on the base, it is characterized in that:

A: described E font iron core (1) is held the back by two two pillar iron cores (7) continuously by a peripheral iron core (8) and solidifies by technology, form from the centre cut-out, described two pillar iron cores (7) are that the magnetic conducting band material by different in width is rolled into stepped cross-section and placed side by side continuously, described peripheral iron core (8) twists in periphery on above-mentioned two the two pillar iron cores (7) continuously for the magnetic conducting band material of different in width, and the cross section of this periphery iron core (8) also becomes stairstepping; Coil then is enclosed within E font iron core (1), and the E font iron core of two symmetries forms an annular core to lumping together by magnetic-conductive adhesive gummed back, promptly claims toroidal transformer;

B: comprise two non-magnetic conduction anchor clamps (3) in the described folder (4), constitute by anchor clamps standing screw (5) and upper and lower standing screw (9) with other two anchor clamps; Be that each closed folder loop all comprises non-magnetic conduction anchor clamps (3) at least;

C: described fuel tank (10) adopts metal material to make, and its shell is a waveform, and the wrinkle direction of ripple can be parallel with the iron core winding direction, and become the transverse corrugated shape fuel tank, also can be perpendicular and become straight corrugated fuel tank with the iron core direction.

2, a kind of novel energy-conserving as claimed in claim 1, environmental protection, light-duty power transformer is characterized in that:

A: also comprise " 7 " font distribution box (11), this distribution box (11) is fixed on a side of transformer case casing, covering low pressure porcelain vase (13) and conducting rod oabc three-phase and five-pole pile crown (16), this distribution box (11) is divided into two of measuring instrument and switch boxs, its form can be about two or two up and down, distribution box (11) front also is provided with dodge gate (14); The chamber door of dress gauge table can be locked and lead-sealable actuation, and the chamber door of dress switch can be by user's self-locking.

B: also comprise a high impedance device (15), this high impedance device (15) is connected between zero line and the ground wire, and it can be a diode, also can be other unidirectional conducting components and parts.