CN211771471U

CN211771471U - Electric heating jet type energy-saving aluminum coil annealing furnace

Info

Publication number: CN211771471U
Application number: CN202020041027.6U
Authority: CN
Inventors: 辛甜; 翟永成; 段文涛
Original assignee: Tianjin Tianlu Machinery Equipment Manufacturing Co ltd
Current assignee: Tianjin Tianlu Machinery Equipment Manufacturing Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-10-27
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses an annealing stove is rolled up to electrical heating injection formula energy-conserving aluminium of annealing technical field, including annealing stove, annealing stove upper end is equipped with the integral type fan, be equipped with the charging tray of can walking in the annealing stove, annealing stove side all is equipped with the blowing pipeline, be located and be equipped with the blowout mouth on the blowing pipeline of annealing stove bottom, annealing stove furnace roof both sides all have the aspiration channel, both ends are equipped with the aspiration channel about the aspiration channel, the aspiration channel middle-end passes through three-way connection and communicates in integral type fan, realize that the furnace temperature homogeneity in the stove is less than or equal to 3 ℃, ensure product quality's stability and qualification rate when reducing ton aluminium annealing running cost, and this energy-saving annealing stove divide into two zones of heating respectively independent circulation hot-blast and independent temperature control (subregion closed loop type control), realize directional circulation of hot-air and heat energy conversion in the stove, the design of heating circulation integrated fan business turn over wind gap and the connection of furnace roof has reduced windage and and the heat efficiency is obviously improved.

Description

Electric heating jet type energy-saving aluminum coil annealing furnace

Technical Field

The utility model relates to an annealing technical field is rolled up to the aluminium, specifically is an energy-conserving aluminium of electrical heating injection formula is rolled up annealing stove.

Background

The hot air circulation path of the existing axial-flow type annealing furnace is as follows: furnace gas circulation path: circulating fan → air ducts on two sides of the hearth (receiving heat of the bayonet heater) → the hearth (entering the hearth from air guide openings on two sides of the bottom of the hearth) → heat exchange with the furnace charge → circulating fan. The main problems are as follows:

1. the power of a circulating fan motor is large (2 to 3 circulating fans are generally configured, and the power of each circulating fan motor is 37KW or 45KW), and the circulating fan motor needs to be operated all the time in the whole annealing process, so that the electric energy consumption of ton aluminum annealing is high due to the design structure.

2. In order to ensure the heat conduction speed, the design power of a heater in a hearth air duct is large (generally 360KW to 600KW), but the actual output is very small (generally 10 percent to 15 percent of rated power) in the heat preservation stage of the actual annealing process, the design causes that the cost of a furnace body is greatly increased, and the over-high utilization rate of the rated power is low.

3. In order to ensure the uniformity of the furnace temperature, a guide plate made of stainless steel (SUS430 or SUS304 stainless steel) is required to be designed in the hearth; and the weight of the guide plate is larger, so that the cost of the furnace body is greatly increased and the heat efficiency is greatly reduced due to the design.

Secondly, an independent positive-pressure purging oil removal system is designed for the furnace of the conventional annealing furnace, a purging fan of the system needs to continuously operate in the whole process of the annealing process, and the electric energy consumption of ton aluminum annealing is high due to the design structure.

Based on this, the utility model designs an energy-conserving aluminium of electrical heating injection formula is rolled up annealing stove to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric heating jet type energy-saving aluminum coil annealing furnace, which designs an air circulation built-in pipeline system and an external air heating circulation integrated fan to replace a circulating fan, a heater and a guide plate of the traditional axial flow type annealing furnace; realizing the directional circulation, positive pressure blow washing and rapid cooling of the hot air in the furnace.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an energy-conserving aluminium of electrical heating injection formula is rolled up annealing stove, includes annealing stove, annealing stove one side is equipped with the furnace gate, the furnace gate upper end is equipped with opens a structure, annealing stove upper end is equipped with the integral type fan, the integral type fan includes heating cabinet and centrifugal fan, annealing stove upper end fixedly connected with guardrail all around, be equipped with the multiunit charging tray of can walking in the annealing stove, annealing stove side all is equipped with the blow pipeline, the blow pipeline all inlays in the interior welt of annealing stove, is located to be equipped with on the blowing pipeline of annealing stove bottom and spouts the blowing mouth, annealing stove furnace roof both sides all are equipped with the air suction pipeline, both ends all are equipped with the inlet scoop about the air suction pipeline, the air suction pipeline middle-end communicates in the.

Preferably, a temperature control module is designed on the heating box.

Preferably, a bypass pipeline is arranged on an air inlet pipeline in the integrated fan, and a butterfly valve with an air inlet protective net is arranged on the bypass pipeline.

Preferably, an independent pipeline circulating system is respectively designed in each hot zone of a hot air circulating pipeline in the annealing furnace, a plurality of groups of pipeline circulating systems are independently circulated and independently controlled in temperature, the hot air circulation between two connected heating zones is not interfered with each other, and the temperature control mode of the pipeline circulating systems is a partition closed loop control mode.

Preferably, the joint of the integrated fan at the top of the annealing furnace and the joint between the furnace top blowing pipeline and the side wall blowing pipeline in the hearth are connected by adopting a chamfer structure.

Preferably, circular air deflectors are arranged on two sides of the bottom of the annealing furnace and in the middle of the furnace body.

Preferably, the integrated fan and annealing furnace connecting end is provided with a thermocouple, one end of the outer side of the annealing furnace is provided with a membrane and a pressure gauge, and the sensing end of the membrane and the pressure gauge is positioned inside the annealing furnace.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can realize that furnace temperature homogeneity in the stove is less than or equal to 3 ℃, ensure product quality's stability and qualification rate when reducing ton aluminium annealing running cost, and this energy-saving annealing stove divide into two (or three) heating zones respectively independent circulation hot-blast and independent accuse temperature (subregion closed loop type control), install 1 group heating cycle integrated fan in every heating zone furnace roof upper end, heating cycle integrated fan is connected with stove internal blowing pipeline, realize stove internal hot-air directional circulation and heat energy conversion, further heating cycle integrated fan business turn over wind gap and the design of being connected of furnace roof are windage and leeward side when the dog-ear structure has reduced the hot-air through the heater, the thermal efficiency is showing and is improved.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1-the structure of the present invention is schematically shown;

FIG. 2 is a schematic side view of the structure of the present invention;

fig. 3-the schematic view from above of the structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-annealing furnace, 2-furnace door, 3-door opening structure, 4-integrated fan, 5-heating box, 6-centrifugal fan, 7-guardrail, 8-walkable material tray, 9-blowing pipeline, 10-thermocouple, 11-membrane and pressure gauge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an energy-conserving aluminium of electrical heating injection formula is rolled up annealing stove, including annealing

stove

1, 1 one side of annealing stove is equipped with

furnace gate

2, 2 upper ends of furnace gate are equipped with

opening structure

3, 1 upper end of annealing stove is equipped with integral type fan 4, integral type fan 4 includes heating cabinet 5 and

centrifugal fan

6, 1 upper end fixedly connected with guardrail 7 all around of annealing stove, be equipped with multiunit walkable charging tray 8 in the annealing

stove

1, 1 side of annealing stove all is equipped with blowing pipeline 9, blowing pipeline 9 all inlays in the interior welt of annealing stove 1, be located and be equipped with on the blowing pipeline 9 of 1 bottom of annealing stove and spout the blow mouth, 1 furnace roof both sides of annealing stove all are equipped with the air suction pipeline, both ends all are equipped with the inlet scoop about the air suction pipeline, the air suction.

Wherein, the design has temperature control module on the heating cabinet 5, and accessible temperature control module controls the heating temperature in the heating cabinet 5, and wherein, temperature control module is prior art product, for heating cabinet 5 from taking the function. And a bypass pipeline is arranged on the air inlet pipeline in the integrated fan 4, and a butterfly valve with an air inlet protecting net is arranged on the bypass pipeline. The positive pressure purging oil removing function in the furnace is realized by controlling the opening and closing size of the bypass butterfly valve in the heating and heat preservation stages of the annealing process; and can realize the function of rapid slope cooling in the stove through the opening and closing size control of this bypass butterfly valve in annealing process cooling stage, the heated air circulation pipeline in annealing stove 1 designs independent pipeline circulation system respectively in every hot zone, and the independent circulation of multiunit pipeline circulation system all circulates and controls the temperature independently, and the heated air circulation between two connected heating zones is mutual noninterference, and the temperature control mode of pipeline circulation system is subregion closed loop type control mode. Ensuring that the furnace temperature uniformity in the effective charging area of each heating area is less than or equal to +/-3 ℃. The junction of the integrated fan 4 on the furnace top of the annealing furnace 1 and the furnace top and the junction between the furnace top blowing pipeline 9 and the side wall blowing pipeline 9 in the hearth are connected by adopting a chamfer structure. The design can effectively reduce the wind resistance loss in the hot air pipeline, obviously improve the air outlet pressure of the furnace bottom blowing opening and further ensure the uniformity of the furnace temperature. Circular air deflectors are arranged at the two sides of the bottom of the furnace and in the middle of the furnace body in the hearth of the annealing furnace 1. The air deflector can effectively reduce the dead angle leeward side of hot air circulation, and has great effect on improving the uniformity of the furnace temperature. The integrated fan 4 is equipped with thermocouple 10 with 1 link of annealing stove, and 1 outside one end of annealing stove is equipped with membrane and manometer 11, and membrane and 11 induction terminals of manometer are located annealing stove 1 insidely. Wherein, the thermocouple 10 is selected to be WRN-100 model, and the membrane and the pressure gauge 11 are selected to be YE-150 model, which is convenient for the working personnel to know the internal temperature and pressure.

One specific application of this embodiment is: when the furnace is used, the gas circulation path in the furnace is heated by pumping air into the heating box 5 by the centrifugal fan 6 (receiving heat of a resistance band in the heating box), then hot air can enter the blowing pipelines 9 at two sides of the furnace top in the hearth of the annealing furnace 1, then enter the blowing pipelines 9 at the left side and the right side in the hearth, finally, the hot air can be sprayed out through the blowing openings at the left end and the right end of the blowing pipelines at two sides of the furnace bottom in the hearth to exchange heat with furnace materials, at the moment, the air suction openings at the left end and the right end of the air suction pipelines at two sides of the furnace top in the hearth can re-introduce the air after heat exchange into the inlet of the centrifugal.

The power of a circulating fan motor and the power of a heater of the traditional axial-flow type annealing furnace are too large, so that the electric energy consumption is too high, and the ton aluminum annealing cost of the annealed aluminum coil is too high. This novel energy-conserving annealing stove has adopted air heating circulation integral type fan, has cancelled the bayonet type heater of installing in the furnace wind channel among the traditional formula stove type, changes resistance area heating cabinet and circulating fan external connection and installs on the furnace roof into. The design mode cancels the guide plate in the traditional furnace type, and the hot air circulation pipeline system in the furnace replaces the guide plate, thereby improving the heat efficiency, reducing the size of the hearth and further reducing the manufacturing cost of the furnace body. The heating and circulating integrated fan can greatly reduce the motor power of the circulating fan (the power of a single circulating fan is reduced by more than 50%) and the rated power of a furnace heater (the total heating power is reduced by more than 70%) under the condition of the same charging amount. The design mode effectively reduces the electric energy consumption of aluminum coil annealing, and further reduces the ton aluminum annealing cost of the aluminum coil.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an energy-conserving aluminium of electrical heating injection formula book annealing stove, includes annealing stove (1), its characterized in that: a furnace door (2) is arranged on one side of the annealing furnace (1), a door opening structure (3) is arranged at the upper end of the furnace door (2), the upper end of the annealing furnace (1) is provided with an integrated fan (4), the integrated fan (4) comprises a heating box (5) and a centrifugal fan (6), the periphery of the upper end of the annealing furnace (1) is fixedly connected with guardrails (7), a plurality of groups of walking material trays (8) are arranged in the annealing furnace (1), the side ends of the annealing furnace (1) are respectively provided with a blowing pipeline (9), the blowing pipelines (9) are respectively embedded in the lining plate of the annealing furnace (1), the blowing pipeline (9) positioned at the bottom end of the annealing furnace (1) is provided with a blowing port, the annealing furnace (1) furnace roof both sides all are equipped with the air suction pipeline, both ends all are equipped with the inlet scoop about the air suction pipeline, the air suction pipeline middle-end communicates in integral type fan (4) through the tee bend interface.

2. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: and a temperature control module is designed on the heating box (5).

3. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: and a bypass pipeline is arranged on an air inlet pipeline in the integrated fan (4), and a butterfly valve with an air inlet protecting net is arranged on the bypass pipeline.

4. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: the hot air circulation pipeline in the annealing furnace (1) is respectively provided with an independent pipeline circulation system in each hot area, a plurality of groups of pipeline circulation systems are all independently circulated and independently controlled in temperature, the hot air circulation between two connected heating areas is not interfered with each other, and the temperature control mode of the pipeline circulation systems is a partition closed loop control mode.

5. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: the junction of the integrated fan (4) at the top of the annealing furnace (1) and the furnace top and the junction between the furnace top blowing pipeline (9) and the side wall blowing pipeline (9) in the hearth are connected by adopting a chamfer structure.

6. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: circular air deflectors are arranged on two sides of the furnace bottom in the hearth of the annealing furnace (1) and in the middle of the furnace body.

7. The electric heating jet type energy-saving aluminum coil annealing furnace according to claim 1, characterized in that: the integrated annealing furnace is characterized in that the connecting end of the integrated fan (4) and the annealing furnace (1) is provided with a thermocouple (10), one end of the outer side of the annealing furnace (1) is provided with a membrane and a pressure gauge (11), and the sensing end of the membrane and the pressure gauge (11) is positioned inside the annealing furnace (1).