CN201390766Y - Annealing heat treatment device for super-huge roller chain gate leaves and integral gate slots - Google Patents

Abstract

The utility model discloses an annealing heat treatment device for super-huge roller chain gate leaves and integral gate slots, which comprises an electrically heated top-cover type annealing furnace utilizing a steel structural liner. The annealing heat treatment device is characterized in that a furnace body made from refractory bricks is a heat insulating layer, a furnace cover is shaped into four steel structures for fixing refractory products, a furnace wall consists of a steel structural liner formed by welding steel plates and angle steels, brickworks on two sides of the furnace wall sequentially include light refractory bricks, aluminum silicate fibers, diatomite bricks, angle steels and steel plates from inside to outside according to material arrangement, the top portion of the furnace wall is provided with refractory concrete, nickel-chromium resistance wires used for heating are uniformly arranged on the periphery and the bottom of the inner wall of the furnace body, a thermocouple, an H-beam support and an embedded plate are arranged on the bottom inside the furnace body, and an angle steel cable bracket is arranged outside the furnace body and contacts with the ground. The annealing heat treatment device can realize integral annealing of components including large-sized door leaves and integral gate slots and the like, has excellent effect of eliminating welding stress during annealing, and is convenient in charging and discharging of annealing components and large in furnace cavity size.

Description

A kind of super-huge sprocket wheel every leaf and whole gate slot annealing thermal treatment unit

Technical field

The utility model relates to a kind of super-huge sprocket wheel every leaf and whole gate slot annealing thermal treatment unit, particularly a kind of top cap type electrically heated annealing furnace.

Background technology

At present, the deep hole sprocket wheel door that power station design water conservancy diversion is used, arc doors etc. all require to eliminate welding stress processing (answering hereinafter to be referred as disappearing) before the processing, owing to be subjected to the bigger restriction of scantling, as: lock gate leaf length reach about 10 meters, about 3.5 meters of width, consider from the cost aspect simultaneously, present many gate manufacturing firm takes to take vibration to disappear and should handle on sprocket wheel every leaf and whole gate slot, the annealing furnace form of perhaps taking oil spout to heat is heat-treated to disappear and is answered, but all there is defective in these methods, vibration disappears and should handle general stress reduced rate and reach about 35%, can not satisfy the requirement of present sprocket wheel door unrelieved stress, because general design requirements unrelieved stress is not more than 30% of material yield intensity, each warming and cooling rate when there is annealing in the annealing furnace of oil jetting combustion heating, processing parameter such as thermostat temperature and time is wayward and make to disappear and answer effect undesirable, for example, carry out integral body before voe emptying bottom outlet sprocket wheel every leaf and the whole gate slot design requirements processing and disappear and to handle, disappear and to handle the back weld residual stress and be not more than 25% of material yield intensity.Wherein gate flap single-unit physical dimension is that 7790mm * 3200mm * 1500mm, whole gate slot single-unit physical dimension are 5500mm * 3900mm * 2000mm, is difficult to meet the demands by the tradition induction method that disappears.

The utility model content

The design requirements gate flap that satisfies this super-huge sprocket wheel door of voe sprocket wheel door and whole gate slot disappear and to handle in order to carry out integral body before processing, and disappearing should its weld residual stress of back be not more than 25% requirement of construction material yield strength, and the utility model provides a kind of super-huge sprocket wheel every leaf and whole gate slot annealing thermal treatment unit.

The utility model is characterized in that, comprise: adopt steel construction to protect the electrically heated top cap type annealing furnace of lining, body of heater is refractory brick and thermal insulation layer, bell is fixing four steel construction shapes of refractory product, protect the furnace wall formed of lining by steel plate and the angle steel steel construction that is welded, the masonry of furnace wall both sides is light fire brick by putting in order of material from inside to outside, aluminum silicate fiber, diatomite brick, angle steel, steel plate, the top of furnace wall is provided with refractory concrete, the inwall that the nickel-chromium resistance wire that will be used to heat evenly is arranged on body of heater reaches the bottom all around, is provided with thermopair in the intravital bottom of stove, joist steel supports, embedded board; Body of heater integral body sinks to underground two meters, imbeds the place that the body of heater of underground part contacts with soil at body of heater and is provided with tar felt and waterproof, and the place that contacts with ground in the outside of body of heater is provided with the angle steel cable rack; Described bell comprises: bell steelframe and pure aluminium silicate.

Principle of work of the present utility model and process are: before the annealing of voe sprocket wheel door member, earlier bell is hung out, sprocket wheel every leaf and whole gate slot are hung in the annealing furnace body of heater, wherein whole gate slot one furnace annealing three joints, by notch up level attitude put into body of heater, gate flap is by four joints, one stove, single-unit gate flap form of standing up in body of heater is put, member is placed in joist steel and supports, set a back pad firmly, hang on bell then, bell directly falls to being placed on the refractory concrete of furnace wall end face, as gapped between the two, lost for preventing heat, but pure aluminium silicate insulation on the choker block.After the annealing member is put into body of heater, send by power distribution cabinet, the nichrome wire resistance wire begins heating to heating in the stove, temperature is carried out temperature regulation by thermopair by the temperature controller monitoring, strict control each temperature and time parameter well by thermal treatment process, so member each warming and cooling rate of when annealing, thermostat temperature and time etc. can be well by standard and processing requirement controls, thereby guaranteeing that member annealing disappears answers thermal effectiveness to be better than traditional method.

The beneficial effects of the utility model are, can carry out integrally annealed to gate large-size components such as super-huge sprocket wheel door or arc doors disappears and answers thermal treatment, can be to large-scale gate flap, member integrally annealeds such as whole gate slot, each temperature during annealing, the time processing parameter is easy to control, it is fine that the welding stress effect is eliminated in annealing, disappear and to compare by device with traditional gate large component integral body, the utlity model has following advantage: owing to adopt top cap type, the shove charge of annealing member, come out of the stove conveniently, size of burner hearth is big, the effective dimensions of annealing furnace burner hearth is 18000mm * 4600mm * 4000mm (length * wide * height), can satisfy the super-huge sprocket wheel door of all deep holes well, member integrally annealeds such as arc door disappear and answer thermal treatment and can overcome the deficiency that traditional large-scale component disappears and should handle.

Description of drawings

Fig. 1 is the furnace binding figure of a kind of super-huge sprocket wheel every leaf described in the utility model and whole gate slot annealing thermal treatment unit;

Fig. 2 is the main TV structure figure of the bell of a kind of super-huge sprocket wheel every leaf described in the utility model and whole gate slot annealing thermal treatment unit;

Fig. 3 is the sectional view along the B-B direction of the bell of described a kind of super-huge sprocket wheel every leaf of Fig. 2 and whole gate slot annealing thermal treatment unit.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail, as Fig. 1,2, shown in 3, the utility model is characterized in that, comprise: adopt steel construction to protect the electrically heated top cap type annealing furnace of lining, body of heater 1 is refractory brick and thermal insulation layer, bell 2 is fixing four steel construction shapes of refractory product, protect the furnace wall 3 formed of lining by steel plate and the angle steel steel construction that is welded, the masonry of furnace wall 3 both sides is light fire brick 6 by putting in order of material from inside to outside, aluminum silicate fiber 7, diatomite brick 8, angle steel 9, steel plate 10, the top of furnace wall 3 is provided with refractory concrete 11, the inwall that the nickel-chromium resistance wire 4 that will be used to heat evenly is arranged on body of heater 1 reaches the bottom all around, and the bottom in body of heater 1 is provided with thermopair 5, joist steel supports 12, embedded board 13; Body of heater 1 integral body sinks to underground two meters, imbeds the place that the body of heater 1 of underground part contacts with soil at body of heater 1 and is provided with oil hair 15 felts and waterproof 16, and the place that contacts with ground in the outside of body of heater 1 is provided with angle steel cable rack 14; Described bell 2 comprises: bell steelframe 201 and pure aluminium silicate 202.

The effective dimensions of annealing furnace burner hearth of the present utility model is 18000mm * 4600mm * 4000mm, and the Heating temperature of annealing workpiece is 700 ℃, and the time that is warmed up to 600 ℃ was at 6-8 hour.Voe sprocket wheel every leaf and whole gate slot are annealed with the utility model after the thermal treatment, with the blind hole method stress test is carried out in lock gate leaf and each butt weld of gate slot and composite welds through power industry metal construction equipment quality inspection center, the digital proof unrelieved stress is less than 20% of Q345B material yield intensity, and the unrelieved stress that meets design requirement fully should be less than 25% requirement of material yield intensity.

The utility model is not limited to the foregoing description; to those skilled in the art, any improvement that the above embodiment of the present invention is made or change can not exceed the embodiments of the invention that only illustrate by way of example and the protection domain of claims.

Claims (1)

1. Super-huge sprocket wheel every leaf and whole gate slot annealing thermal treatment unit, it is characterized in that, it consists of: the electrically heated top cap type annealing furnace that protects lining with steel construction, body of heater is refractory brick and thermal insulation layer, bell is fixing four steel construction shapes of refractory product, protect the furnace wall formed of lining by steel plate and the angle steel steel construction that is welded, the masonry of furnace wall both sides is light fire brick by putting in order of material from inside to outside, aluminum silicate fiber, diatomite brick, angle steel, steel plate, the top of furnace wall is provided with refractory concrete, the inwall that the nickel-chromium resistance wire that will be used to heat evenly is arranged on body of heater reaches the bottom all around, is provided with thermopair in the intravital bottom of stove, joist steel supports, embedded board; Body of heater integral body sinks to underground two meters, imbeds the place that the body of heater of underground part contacts with soil at body of heater and is provided with tar felt and waterproof, and the place that contacts with ground in the outside of body of heater is provided with the angle steel cable rack, and described bell comprises bell steelframe and pure aluminium silicate.

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