CN2733291Y

CN2733291Y - Short net arrangement for yellow phosphorus furnace

Info

Publication number: CN2733291Y
Application number: CN 200420080628
Authority: CN
Inventors: 魏火军
Original assignee: YULONG METALLURGICAL ELECTRIC FURNACE PARTS FACTORY JIANGSU PROV
Current assignee: YULONG METALLURGICAL ELECTRIC FURNACE PARTS FACTORY JIANGSU PROV
Priority date: 2004-10-29
Filing date: 2004-10-29
Publication date: 2005-10-12
Anticipated expiration: 2014-10-29

Abstract

The utility model relates to a short net arrangement for yellow phosphorus furnace, belonging to a field of mechanism. The utility model is characterized in that the copper wire plate-type balance gear is connected with the quadrate lead-out terminal of the transformer and the hydrocooling conductive copper pipe, the conductive copper pipe is connected with a hydrocooling cable by a cable joint, the hydrocooling cable is connected with a copper pipe in the furnace, the copper pipe in the furnace is connected with a copper tile tightly fixed on the electric pole. By using copper wire plate-type balance gear, the connection of the hydrocooling conductive copper pipe and the hydrocooling cable, changing the arranging position of the hydrocooling conductive copper pipe, changing the contact point of different phases of the low-voltage lead-out terminal of the transformer, the device can make the short net reduce the electric arc power attenuation as much as possible, make the impedance small, reduce the length of the short net, make the three-phase short net balance, and therefore the horsepower of the yellow phosphorus furnace is increased.

Description

The short-net device of yellow phosphorus stove

Technical field

The application relates to a kind of short-net device of yellow phosphorus stove, belongs to mechanical field.

Background technology

The short-net device of yellow phosphorus stove is to be the furnace power transfer passage of characteristics with the low pressure electric furnace, short net is a heavy current circuit in the yellow phosphorus stove, it is the summation from furnace transformer low voltage voltage leading-out terminal to the various forms conductor the electrode, is the main power supply unit of yellow phosphorus stove secondary circuit.Fig. 1 is a present yellow phosphorus stove short net equipment commonly used, publication is in " Sichuan metallurgy " magazine first phase in 2003 p.9--p.11 in " the short web frame of the hot stove in ore deposit improves " literary composition, and its short net system is made up of copper pipe 6 collector rings, 7 brasses 8 and electrode 9 in transformer 1 moccasin copper cash compensator 2 contact tubes 3 bare cable joints 4 bare cables 5 stoves.

Bare cable 5 is connected with collector ring 7 by copper pipe 6 in the stove, connecing electricity ring 7 is connected with brasses 8, the brasses lock ring is outside electrode, contact tube adopts around the electrode peripheral disposition, contact tube is homophase and arranges, the transformer low voltage leading-out terminal is finished delta connection on electrode, represented as Fig. 2, and the electric current on every phase bare cable reaches the training of 2 Wan An.

The disadvantages of background technology part is:

1. the compensator of soft copper skin can only move in an orientation, and is big to the vibration of transformer, the easy leakage of oil of transformer.Many copper sheets bear against together, and radiating effect is poor;

2. contact tube adopts around the electrode outside and arranges, the homophase unreasonable structure and arrangement increases magnetic resistance, reduces magnetic flux and self-induced e.m.f, can increase the spacing of same phase conductor like this.

3. the bare cable formed of multiply, kelvin effect causes outer cable overload, burns out easily.Bare cable is connected on the collector ring, the collector ring 400-500 kilogram that weighs, manufacturing process complexity.

The thorn fire often appears in cable soft bus two ends and collector ring connecting portion, and collector ring is short service life.

4. the transformer low voltage leading-out terminal is connected into triangle, and as shown in Figure 2, the outer contact tube of petticoat pipe and petticoat pipe has tangible magnetic phenomenon, and power factor (PF) is low, and generally with the fluctuation of operating current, its power factor (PF) has only 0.5--0.7, and the electric energy reactive power consumption is serious.

Summary of the invention

The application provides a kind of short-net device of yellow phosphorus stove, this device be by use the board-like compensator 2 of copper stranded conductor ', water-cooled contact tube 3 ' with water-cooled cable 5 ' be connected, change the arrangement position of water-cooled contact tube, the headtotail of transformer low voltage leading-out terminal out of phase is arranged, make short net reduce the arc power loss as far as possible, impedance is little, reduce the length of short net, make the short net equilibrating of three-phase, thereby improve the power of yellow phosphorus stove.

Can adopt following measure to reach purpose of the present invention

The board-like compensator 2 of copper stranded conductor ' connection transformer 1 secondary leading-out terminal and water-cooled contact tube 3 ', water-cooled contact tube 3 ' by cable connector 4 be connected 5 with water-cooled cable ', copper pipe 6 is connected in water-cooled cable and the stove, and the interior copper pipe 6 of stove is connected with brasses 8 on being fastened on electrode 9.

The board-like compensator 2 of usefulness copper stranded conductor between transformer secondary leading-out terminal and short net ', it is the compensator of air cooling, uses the soft bus of JTR, and is good around property, can carry out omnibearing compensation, good heat dissipation effect.

Water-cooled contact tube 3 is the hard buses of secondary, is that length is the longest in the weak point net system, the part that consumptive material is maximum.The water-cooled contact tube is arranged according to the sense of current, the water-cooled contact tube of per two different senses of current near, spacing has the water-cooled contact tube of a reversing the current in the same way between the water-cooled contact tube in 10mm.The water-cooled contact tube is by ' double wire system ' arrangement, and the water-cooled contact tube is arranged according to the sense of current, the water-cooled contact tube of per two different senses of current near, spacing has the water-cooled contact tube of a reversing the current in the same way between the water-cooled contact tube in 10mm.The method that promptly adopts whole conducting system homophase conductors cross to arrange, the phase difference that adjacent conductor is flow through are the directional current of 180 ° or 120 °, have reduced mutual inductance effectively, have reduced the impedance absolute value, improve the power factor (PF) of stove.

Increase the spacing of same conductor as shown in Figure 3 as far as possible, increase magnetic resistance, reduce magnetic flux and self-induced e.m.f, the lead of opposite current is close to each other, is cancelled out each other in its magnetic field.

What the yellow phosphorus stove used now all is low hood, use water-cooled cable 5 ' substitute bare cable, the outer sebific duct of water-cooled cable can bear the heat that stove distributes, because the core of water-cooled cable is hollow coiling, adverse effects such as kelvin effect and approach effect have been overcome, improved the electric parameter of short net, short net fault rate reduces.

Water-cooled cable has improved current-carrying capacity, than bare cable volume compact, and economical with materials 1/3.Water cold-end compensator of the present invention, secondary copper busbar are that copper pipe connection in the stove is arranged between water-cooled copper, brasses and the water-cooled cable, and because of all adopting water-cooling structures, the unobstructed serial connection of water circuit system can be without collector ring, simplified structure.

The every head and tail turnover line end that is divided into mutually of transformer low voltage leading-out terminal, the head and the tail of transformer out of phase are connected on the brasses.Fig. 3 is represented to be the transformer and the line chart of three electrodes, and the every phase of transformer low voltage leading-out terminal becomes (shown in abc) and tail (shown in XYZ) second-rate separately, and the head of out of phase (abc) is connected with an electrode brasses with tail (XYZ),

The brasses lock ring is on electrode, it is close to reduce the effective method of reactance and be that same phase place is come and gone Ampereconductors, make its equidirectional conductor of flowing through far away as far as possible, the conductor of reciprocal electric current of flowing through is close as much as possible, can guarantee that like this electric current on each electrode is the trainings of 2 Wan An, but the electric current of 1.15 Wan An training is only arranged on every contact tube.

Advantage of the present invention

1. reduce the reactance value of short net, help the balance of phase reactance, short net size is reduced, compact conformation can be saved copper material 30-40%;

2. tie point is few between the various forms of conductors, and short net surface temperature is low;

3. power factor (PF) can reach 0.95;

4. the long service life fault rate is low.

Description of drawings

The short net connection diagram of the former yellow phosphorus stove of Fig. 1

Former transformer of Fig. 2 and line chart

Fig. 3 transformer of the present invention and line chart

The transformer of Fig. 4 six electrodes and line chart

Copper pipe 7--collector ring 8--brasses 9--electrode 10 yellow phosphorus stove 11-bodies of wall 2 in the 1--transformer 2--copper sheet compensator 3--contact tube 4--bare cable joint 5--bare cable 6--stove ' board-like compensator 3 ' water-cooled contact tube 5 ' water-cooled cable

The specific embodiment

The short web frame of 10000KVA yellow phosphorus stove

Six roots of sensation diameter is the electrode of 500mm, electrode circle diameter is 2700mm, the capacity of transformer is 10000KVA, twice rated current is 20615 amperes, and the yellow phosphorus stove is fully airtight, and brasses is in the body of heater outside, be stuck in electrode top, environment temperature is lower, is provided with the board-like compensator of flexible cord between transformer secondary leading-out terminal and the copper pipe, and conductive cross-sectional area is 2400mm ², long 900mm, current capacity are that 3000A. short_net copper pipe diameter is 70 * 12.5, the conductive cross-sectional area of water-cooled cable is 1600mm ²Long 2200mm

Fig. 4 be between the transformer low voltage leading-out terminal of present embodiment and the brasses and line chart, by seeing among the figure, every two tails of two statures (abc) (XYZ) that are divided into mutually of transformer three-phase, during doubling, the head of out of phase (abc) is connected with a brasses with tail (XYZ).Its combined situation is arranged on copper pipe and is decided, and the copper pipe that needs to guarantee out of phase is close together.Between water-cooled cable and electrode brasses, also has copper pipe in one section short stove.To the access of each root electrodes conduct copper pipe, should accomplish it is that circuit is identical, symmetrical, and the space of occupying should be as far as possible little, length is short as far as possible.

Electric equilibrium test comparison before and after the present invention uses

Project	Use background technology	Use the present invention
Project	Use background technology	Use the present invention	Phase resistance	0.62	?0.40
The loss of voltage	10.72	?8.74	Phase resistance	0.62	?0.40
The loss of voltage	10.72	?8.74	Electrical efficiency	80.52	?85.25
The thermal efficiency	32.66	?37.90	Electrical efficiency	80.52	?85.25

After using the present invention, the daily output improves, and the ratio of first-grade products improves.

Claims

1. the short-net device of a yellow phosphorus copper, form by transformer (1) compensator (2) contact tube (3) cable (4) brasses (8) and electrode (9), it is characterized in that: the board-like compensator of copper stranded conductor (2 ') connects transformer (1) secondary leading-out terminal and water-cooled contact tube (3 '), water-cooled contact tube (3 ') is connected (5 ') by cable connector (4) with water-cooled cable, copper pipe (6) is connected in water-cooled cable and the stove, and the interior copper pipe (6) of stove is connected with brasses (8) on being fastened on electrode (9).

2. the short-net device of yellow phosphorus stove according to claim 1, it is characterized in that: the water-cooled contact tube is arranged according to the sense of current, the water-cooled contact tube of per two different senses of current near, spacing has the water-cooled contact tube of a reversing the current in the same way between the water-cooled contact tube in 10mm.

3. the short-net device of yellow phosphorus stove according to claim 1 is characterized in that: the every head and tail turnover line end that is divided into mutually of transformer low voltage leading-out terminal, the head and the tail of transformer out of phase are connected on the brasses.