CN202224621U

CN202224621U - Device for controlling downwarping of intermediate tank

Info

Publication number: CN202224621U
Application number: CN2011202075146U
Authority: CN
Inventors: 王莉君; 邓爱军
Original assignee: Zhongye Continuous Casting Technology Engineering Co Ltd
Current assignee: Zhongye Continuous Casting Technology Engineering Co Ltd; CCTec Engineering Co Ltd
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2012-05-23
Anticipated expiration: 2021-12-22

Abstract

The utility model provides a device for controlling downwarping of an intermediate tank. The device adopts a structure that an I-type cross beam is combined with a column; the two ends of the cross beam are welded at the upper parts of high legs at the two ends of an intermediate tanker respectively so as to be integrated with the intermediate tanker; the force is transmitted to rail beams at the two ends of the intermediate tanker in a manner that the two ends of the device are used for supporting and load is centralized at the middle; besides, an intermediate tank weighing device is mounted on a high-leg rail beam of the intermediate tanker. The device can effectively control downwarping deformation of the intermediate tank and prolong the on-line running time of the intermediate tank, so that the fire-resisting material used for the inner lining of the intermediate tank can be saved, and the working hours for building the inner lining of the intermediate tank manually can be saved indirectly, in addition, the time for on-line continuous casting can be increased, and grave labor accidents can be avoided indirectly; and the device plays an important role in saving manufacturing cost and improving the productivity.

Description

A kind of control pans downwarp device

Technical field

The utility model relates to a kind of control pans downwarp device, is specially the control pans downwarp device of the whole pans of multiple-strand caster bottom, belongs to metallurgy industry conticaster technical field.

Background technology

In recent years, the metallurgy industry steelshop was in order to be complementary with jumbo converter, when producing light-gauge strand; Adopt the conticaster of multimachine multithread, like 6 streams, 7 streams, 8 streams, whole pans of current domestic intermediate tundish carriage delivery are at most 8 streams; The stream spacing is 1.2m～1.25m, and pans are key links of forming a connecting link in the conticaster running gate system, and it is between ladle and crystallizer; Be used to receive ladle molten steel and in crystallizer, inject molten steel; The purpose of using pans is to reduce the static pressure of molten steel, makes the steel levelling steady, reduces impact and the stirring of steel stream to molten steel in the crystallizer; Pans are provided with a plurality of mouths of a river identical with fluxion, so that inject molten steel to each stream crystallizer simultaneously.

The pans shape is commonly used has rectangle, triangle and T type, and the two ends of pans have two support levels respectively, are seated on the intermediate tundish carriage according to this; All the other positions all are unsettled, and do not have any support (referring to accompanying drawing 5) that contacts with intermediate tundish carriage, the length of pans; Depend primarily on the fluxion of conticaster and the distance between the stream; The length of the many more pans of fluxion is just long more, and the pans downwarp phenomenon of carrying molten steel this moment is just outstanding more, and the working environment of adding high temperature makes the downwarp of pans aggravate.

The downwarp meeting of pans causes the pans bulk deformation; Make middle pot drainage opening can not the centering crystallizer suitable for reading, the position when influencing molten steel and injecting crystallizer makes liquid level fluctuation of crystallizer big; Cause that volume slag probability increases; The copper pipe erosive wear is inhomogeneous in the crystallizer, and then influences continuous casting billet quality and crystallizer service life of equipment, and reduces production efficiency; The pans downwarp causes the steel plate cracking when serious, and molten steel leaks, and major industrial accident takes place.When producing superior alloy steel, bearing steel, spring steel, can adopt the protection cast usually, promptly adopt special substance to make the growth sleeve pipe, be enclosed within on the middle pot drainage opening, it is inner that long sleeve pipe end opening inserts crystallizer, and molten steel is not contacted with extraneous air, avoids secondary oxidation; This moment, the error that it causes can be amplified several times by long sleeve pipe, make long sleeve pipe end opening might run into the crystallizer inwall as if the pans downwarp, made the base shell be difficult for generation, produced the bleed-out phenomenon, scaling loss equipment; Or produce defective strand.

For fear of the appearance of the problems referred to above, useful two intermediate tundish carriages carry the pans way of two 4 streams, but this way makes that number of devices is added, maintenance cost high, and complicated operation.

The method that adopts the thickening tundish lining is also arranged, but all be the process that temporarily delays whole pans downwarp on the original basis.And refractory material is to produce expendable part, and expense is big, is prone to cause production cost high.

In order to control the pans downwarp, improve the safety operation performance and the service life of equipment, the whole pans downwarp of a kind of control multithread device necessitates, and domestic still do not have a known solution in this aspect, do not retrieve relevant publication technology contents yet.

Summary of the invention

The utility model purpose is to overcome the described deficiency of background technology, and a kind of control pans downwarp device is provided, and this device adopts I shape crossbeam and column integrated structure; The two ends of crossbeam are welded on the top of the high leg in intermediate tundish carriage two ends respectively, thereby become one with intermediate tundish carriage, utilize the two ends of this device to support; The centre receives the concentrfated load method; Power is delivered on the track girder at intermediate tundish carriage two ends, on the other hand, the meausring apparatus of pans is installed on the high leg track girder of intermediate tundish carriage.This device can effectively be controlled the lower flexure strain of pans; Prolong working online the time of pans; Thereby the refractory material of practicing thrift tundish lining uses; Also indirect saving artificial man-hour of building tundish lining by laying bricks or stones, and improve time of on-line continuous cast, also avoided the generation of great production accident indirectly.For saving production cost, improve production capacity and played important function.

The technical scheme of the utility model is: a kind of control pans downwarp device; Form by crossbeam, brace summer, column, reinforcement and support wheel; It is characterized in that: crossbeam is an I-shaped structure beam; Brace summer is a box type structure girder, and column is the i shaped steel structural member, and support wheel is the rolling steel wheel; The two ends of crossbeam are welded on the top of the high leg in intermediate tundish carriage two ends respectively; The upper end of column has bolt that column and crossbeam are connected; Its tie point is positioned at the middle part downside of crossbeam; The lower end of column and the vertical in the horizontal direction welding of brace summer, the other end of brace summer and support wheel assembly are connected, and also have reinforcement to be welded between column and the brace summer.Its beneficial effect really is: when the pans lower flexure strain; Can touch brace summer, brace summer is equivalent to hold the middle part of pans bottom at this moment, and the pans bottom is supported; Be equivalent to become supported at three point, controlled the reclinate state in pans bottom by 2 supports.One end of brace summer is delivered to suffered power on the high-order track girder of intermediate tundish carriage through column, crossbeam; The other end is delivered to suffered power on the low Bit Track of intermediate tundish carriage through support wheel; On the other hand; Employing is installed in the weighing of pans and changes method on the high leg track girder that is installed in intermediate tundish carriage on the intermediate tundish carriage into by meausring apparatus, solved the weighing problem of pans.

Description of drawings

Accompanying drawing 1 is that this is newly with new embodiment control pans downwarp device front view;

Accompanying drawing 2 be in the accompanying drawing 1 along C-C to cutaway view;

Accompanying drawing 3 is the left view (removal intermediate tundish carriage) of accompanying drawing 2;

Accompanying drawing 4 is part 26 enlarged drawings in the accompanying drawing 2;

Accompanying drawing 5 is existing traditional multithread intermediate tundish carriage shaft side figure.

The specific embodiment

The utility model embodiment is further specified the mark in the accompanying drawing below in conjunction with accompanying drawing: 1-crossbeam, 2-column, 3-reinforcement, 4-reinforcement; The 5-brace summer, 6-end cap, 7-wheel, 8-steel plate, 9-baffle plate; The 10-lubricator, 11-axle, 12-axle sleeve, 13-bearing, the high leg support wheel of 21-; 22-hangs down the leg support wheel, 23-pans overall height leg, and the 24-pans, 25-hangs down leg supporting track, 26-support wheel assembly.

With reference to accompanying drawing 1, accompanying drawing 2, a kind of control pans downwarp device is made up of crossbeam 1, brace summer 5, column 2, reinforcement 3 and reinforcement 4 and support wheel.Crossbeam 1 is an I-shaped structure beam, and brace summer 5 is box type structure girders, and column 2 is i shaped steel structural members, and the rolling wheel 7 on the support wheel assembly 26 contacts with low leg supporting track 25; The two ends of crossbeam 1 are welded on the top of the high leg 23 in intermediate tundish carriage 24 two ends respectively; Thereby become one with intermediate tundish carriage 24; The upper end of column 2 has bolt that column 2 and crossbeam 1 are connected; Its tie point is positioned at the middle part downside of crossbeam 1, the lower end of column 2 and the vertical in the horizontal direction welding of brace summer 5, and the other end of brace summer 5 and support wheel assembly 26 are connected.Brace summer 5 is the critical pieces that support pans 24 downwarps; The pressure that produces when bearing pans 24 downwarps; Its end welds with column 2 mutually, and a suffered power part is delivered to crossbeam 1, thereby power is delivered on the high-order track girder of intermediate tundish carriage through pans overall height leg 23; The other end drops on the crossbeam of intermediate tundish carriage 24 bodies and welding with it, and a suffered power part is delivered to through support wheel 26 on the low leg supporting track 25 of intermediate tundish carriage, also has reinforcement 3,4 to be welded between column 2 and the brace summer 5.Support wheel assembly 26 is made up of end cap 6, wheel 7, steel plate 8, baffle plate 9, lubricator 10, axle 11, axle sleeve 12 and bearing 13, and the wheel 7 of support wheel drops on the low level track girder of intermediate tundish carriage, and power is delivered on the track girder the most at last.

In the work; When pans 24 lower flexure strains, can touch brace summer 5, brace summer 5 is equivalent to hold the middle part of pans 24 bottoms this moment; Pans 24 bottoms are supported; Stressing conditions greatly takes on a new look, and is equivalent to become supported at three point from 2 supports, has controlled the reclinate state in pans 24 bottoms.Brace summer 5 is delivered to suffered power on the high low orbit of intermediate tundish carriage through the wheel 7 on part column 2, crossbeam 1 and the support wheel assembly 26.

The utility model mainly is the lower flexure strain of control pans; Prolong working online the time of pans; Thereby the refractory material of practicing thrift tundish lining uses; Also indirect saving artificial man-hour of building tundish lining by laying bricks or stones, and improve time of on-line continuous cast, also avoided the generation of great production accident indirectly.For saving production cost, improve production capacity and played bigger effect.

Usually the meausring apparatus of pans is installed on the intermediate tundish carriage, when using the utility model device, adopts existing technique known, and the meausring apparatus of pans is installed on the high leg track girder of intermediate tundish carriage, promptly adopts track weighing formula to weigh and gets final product.

The economic analysis that below is the utility model case study on implementation is compared:

1) embodiment one No. 2 billet casters, design year production capacity 105 * 10 ⁴The qualified continuous casting billet of t.The flat cost that changes an anti-material of pans when wherein seven stream pans adopt metering nozzle to open wide casting is 1.41 ten thousand yuan; Annual total is changed and is bundled into these about 3,750,000 yuan; Conticaster consecutive mean casting time was brought up to 42 hours by 28 hours after adopting the utility model embodiment, 1,250,000 yuan of the whole year or saving costs; On the other hand, behind employing the utility model embodiment, the annual seven stream pans body quantity of changing are reduced to 2 by 4, and cost-saved 500,000 yuan, to sum up two relatively draw 1,750,000 yuan of annual saving costs.

2) two, 2 eight machines of embodiment eight stream billet casters, design year production capacity 160 * 10 ⁴The qualified continuous casting billet of t.After adopting inventive embodiments, through statistics, annual being total to practiced thrift the flat cost of changing the anti-material of pans and reduced 249.6 ten thousand yuan of the pans body quantity expenses of changing.

The real economy benefit that the visible the utility model of comparative analysis through above two embodiment is applied on the multiple-strand caster to be produced.For the more conticasters of fluxion, the economic benefit that the application of the utility model produces is more obvious, has greatly reduced the productive labor cost of enterprise, has improved the competitiveness of enterprise product effectively.

Claims

1. a control pans downwarp device is made up of crossbeam, brace summer, column, reinforcement and support wheel, and it is characterized in that: crossbeam is an I-shaped structure beam, and brace summer is a box type structure girder, and column is the i shaped steel structural member, and support wheel is the rolling steel wheel; The two ends of crossbeam are welded on the top of the high leg in intermediate tundish carriage two ends respectively; The upper end of column has bolt that column and crossbeam are connected; Its tie point is positioned at the middle part downside of crossbeam; The lower end of column and the vertical in the horizontal direction welding of brace summer, the other end of brace summer and support wheel assembly are connected, and also have reinforcement to be welded between column and the brace summer.