CN217127488U - Sectional type heating/cooling device - Google Patents

Abstract

The patent of the utility model relates to a sectional type heating/cooling device; belongs to the technical field of furnace body design. The segmented hot/cold device; the vertical furnace body A consists of a heat insulation shell 3, a heat insulation layer 4, a heating device 5, a porous clearance layer 6, a heat supplementing resistance wire 8, a plurality of groups of temperature sensors 9 and a telescopic ventilation pipe 10; the porous gap layer 6 also having disposed thereon bayonet pins 7 of the type and '﹂'; the heat supplementing resistance wires 8 are arranged in a non-uniform arrangement mode, and the heating device 5 is positioned between the heat insulation layer 4 and the porous clearance layer 6; the heat-supplementing resistance wire 8 is arranged at a position close to the inner wall of the porous clearance layer 6 through the bayonet 7; the protective cover (1) is provided with an air inlet and an air outlet with valves; when in use, the protective cover (1) covers the opening end of the vertical furnace body (A). The designed device can realize the heating and/or cooling of different temperatures at different positions of the structural material in the same heating furnace.

Description

A segmented heating/cooling device

technical field

The utility model patent relates to a segmented heating/cooling device, which belongs to the technical field of furnace body design.

Background technique

In modern industrial production, heat treatment is widely used in various industries. Metal heat treatment is a key process to improve the comprehensive properties of metal materials. It is widely used in practical production, especially in improving its toughness, fatigue performance, high temperature resistance, wear resistance. , processing performance and other aspects have a greater role. In the current production, most of the heat treatment furnaces are used for heat treatment, but most of the heat treatment furnaces are currently integrated, which will cause the workpiece to be heated, and the entire part will be heat treated at the same time, regardless of the unevenness of the material. And other factors, the phase transition of each part of the processed material should be the same and the properties should be nearly similar. In this way, it is impossible to directly produce workpieces with different performance requirements of the same material. Generally, welding treatment is required. On the basis of this material, other materials with different performances are welded to meet the process requirements. Welding will lead to Its structure and properties have changed, and at the same time, some materials are not suitable for welding, or cannot be welded if they do not meet the welding standards, so a device is urgently needed. cooling rate. Using different cooling rates can have a greater impact on the structure, grain size and other properties of the workpiece, and can use this to manufacture materials with different properties. At the same time, the properties of materials can be adjusted.

In the current field, there are roughly the following ways to solve this problem:

The first is the invention patent CN 110760652 applied by Northeastern University, "a metal plate and strip section heat treatment device process", this process is mainly when the workpiece is heated to the process temperature, one side is quenched with a high-pressure jet quenching device , On the one hand, the normal pressure quenching device is used for water spray quenching, the difference in water spray pressure between the two and other auxiliary actions to complete the heat treatment process, which is mainly controlled by the difference in cooling speed to achieve the segmented heat treatment device required by our process.

The second Chinese patent CN107287397A proposes a cooling device and control method for heat treatment of hot-rolled steel sheets. The device consists of a high-pressure spray cooling system and a mortgaged water mist cooling system to form an integral cooling device, which is only for quenching of hot-rolled steel strips. heat treatment.

The third Chinese patent CN102120225A proposes a precision elastic alloy quenching treatment device and method. The device is composed of a heating unit, a high temperature alloy atmosphere protection unit, an atmosphere control unit, a temperature control unit, an operation unit and a flowing water cooling unit, which shortens the heating time of the workpiece. Time and quenching time, so that the workpiece is heated evenly and cooled rapidly. The invention implements a heat treatment device for precision elastic alloy parts; it cannot achieve different temperature heating and/or cooling of different positions of structural materials in the same heating furnace at the same time.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a device for simultaneously heating and/or cooling structural materials at different temperatures at different positions in the same heating furnace.

The utility model is a segmented heating/cooling device, which comprises a vertical furnace body A and a protective cover 1. The vertical furnace body A consists of an insulating shell 3, an insulating layer 4, a heating device 5, a porous gap layer 6, The heating resistance wire 8, the temperature sensor 9 and the retractable ventilation pipe 10 are composed; the porous gap layer 6 is also provided with "﹁" type and "﹂" type bayonet pins 7; Evenly arranged, the heating device 5 is located between the thermal insulation layer 4 and the porous gap layer 6; the heat-supplying resistance wire 8 is set at a position close to the inner wall of the porous gap layer 6 through the bayonet 7;

The protective cover 1 is provided with an air inlet and an air outlet with valves; when in use, the protective cover 1 covers the open end of the vertical furnace body A.

As a preferred solution, the utility model is a segmented heating/cooling device; after the external workpiece 2 is placed, a gap is left between the external workpiece and the porous gap layer 6, and the width of the gap is 5-10 cm. The remaining pores are mainly to facilitate the introduction of gas to adjust the temperature.

As a preferred solution, the retractable ventilation duct 10 can be introduced into the gap, and the introduction depth of the air duct can be regulated. After the air duct is inserted, there is a second gap between the air duct and the porous gap layer 6 . In actual use, there is also a third gap between the retractable ventilation pipe and the external workpiece. As a further preferred solution, holes are opened on the side wall of the bottom of the telescopic ventilation pipe.

As a preferred solution, the utility model is a segmented heating/cooling device; the protective cover 1 is connected to the open end of the vertical furnace body A by means of a buckle.

In the bayonet 7, "﹁" type and "﹂" type are alternately distributed. Or in the vertical furnace body A, the projection is performed perpendicular to the side wall of the vertical furnace body; one side of the projection is the "﹁" type bayonet;

As a preferred solution, the utility model is a segmented heating/cooling device; the protective cover 1 is provided with an air inlet at an included angle with the horizontal plane. As a further preferred solution, the air inlet is at an angle of 30-60° with the horizontal plane.

As a preferred solution, the utility model is a segmented heating/cooling device; the top of the protective cover 1 is provided with a first air inlet; the bottom side wall of the protective cover 1 is provided with a second air inlet.

In the insulation layer 4, a plurality of sets of temperature sensors 9 are arranged from the top to the bottom of the vertical furnace.

A segmented heating/cooling device designed by the present invention divides the temperature of the heating interval of the outer workpiece before placing the outer workpiece; High density at the bottom and low density at the top; if the heating temperature at the top is high and the temperature at the bottom is low, set the heating resistance wire to a state with high density at the top and low density at the bottom; It can realize the heating of different positions of structural materials at different temperatures in the same heating furnace at the same time. And so on.

In the present invention, the protective gas can be introduced through the air duct and/or the air inlet before the external workpiece is placed and heated.

When the set temperature is reached and kept warm; stop the heating (including the heating of the furnace body and the heating resistance wire), pass in the protective gas, and use the cooperation of the air duct and the air inlet to achieve different cooling speeds for different positions of the external processing parts. .

The beneficial effect of the utility model is that: after the workpiece is put into the device and heated, the temperature of the lower part of the workpiece is adjusted by adjusting the heating resistance wire in the lower part, and the heating resistance wire can adjust the contact density with the workpiece, thereby realizing Uniform compensation or partial compensation, and the thermal insulation material in the lower part has a little thermal insulation effect on the lower part, and the temperature difference between the upper and lower parts is formed according to the ventilation position and wind speed, forming a favorable effect of segmented heating. In the cooling stage, the vertical furnace body A itself is not heated. By adjusting the first air inlet and the second air inlet, a cooling medium (such as protective gas and air) is introduced to form a spiral wind, which rapidly cools the upper part and the lower part. The cooling speed is slower than that of the upper part, while the lower part is heated by a heating resistance wire to adjust its cooling speed, and the heat insulating material can reduce its cooling speed, so that the beneficial effect of segmented cooling of the upper and lower parts can be achieved. Therefore, it can be used to solve many practical problems, and the effect of different properties of the same material can be achieved without welding. Moreover, before the external processing parts are released, the first and second air inlets mainly control the cooling speed; the cooling speed of the inner part of the sample furnace and the outer part of the furnace are obviously different; If the position is the same, the specified position of the sample furnace can be cooled according to the set temperature.

Description of drawings

Accompanying drawing 1 is a schematic diagram of a situation of a segmented heating/cooling device designed by the utility model;

2 is a schematic structural diagram of a neutral vertical furnace body A of the present utility model;

Accompanying drawing 3 is the structural representation of the protective cover in the utility model;

Accompanying drawing 4 is the schematic diagram of another situation of the segmental heating/cooling device designed by the utility model;

In the drawings, 1 is a protective cover, 2 is an external processing piece, 3 is a heat insulating shell, 4 is a thermal insulation layer, 5 is a heating device, 6 is a porous gap layer, 7 is a bayonet, 8 is a heating resistance wire, 9 It is a temperature sensor, and 10 is a retractable ventilation pipe.

Detailed ways

Example of segmented heating: select equipment according to the device shown in Figures 1-3; first open the protective cover 1, then hang the heat-supplying resistance wire 8 on the bayonet 7, and adjust the spatial arrangement of the heat-supplying resistance wire 8 The density reaches the set value, and then insert the external workpiece 2 into the lower part; then cover the protective cover 1 (the reserved openings of the protective cover are all closed at this time), and connect the upper and lower parts by snapping. Open the reserved port to let in the protective gas; after the preparation work, start to turn on the switch of furnace A for overall heating. After reaching the preset temperature, turn on the switch of the heating resistance wire 8 to supplement the heat for the lower set part, and control the air inlet at the same time. And the air volume of the retractable ventilation pipe; through multiple sets of temperature sensors 9 and adjusting the power of the heating resistance wire and adjusting the air volume of the air inlet and the retractable ventilation pipe, the external workpiece 2 can be heated and form a temperature difference at different positions at the same time. Thus, staged heating is completed. In addition, the device can be comprehensively adjusted by the density of the heating resistance wire, the gas introduced by multiple sets of retractable ventilation pipes, and the ventilation pressure and temperature of the air inlet, so as to control the temperature of any part of the workpiece and control the temperature difference of any different parts. , to form a more beneficial effect, and complete any segment heating.

Staged cooling example:

At the beginning of the cooling phase, the heating device 5 of the furnace A is turned off, and the air volume and speed of the first air inlet and the second air inlet are adjusted and matched with the air intake position, air volume and air speed of the telescopic ventilation pipe and the telescopic ventilation pipe to realize the inside of the sample furnace. The cooling rate of the part and the outer part of the furnace is obviously different; at the same time, the function of cooling the specified position of the inner part of the sample furnace according to the set temperature is also realized.

During the cooling process, the cooling effect can also be observed through the temperature sensor 9, and at the same time, the switch of the heating resistance wire 8 can be turned on to adjust the temperature of the lower part so as to adjust the cooling speed. The beneficial effect of segmented cooling can be effectively achieved through the above operations.

Claims (10)

1. A segmented heating/cooling device; comprising a vertical furnace body (A) and a protective cover (1), characterized in that: the vertical furnace body (A) is composed of an insulating shell (3), a thermal insulation layer (4), a heating device (5), a porous gap layer (6), a heating resistance wire (8), a plurality of sets of temperature sensors (9) and a retractable ventilation pipe (10); "﹁" type and "﹂" type bayonet pins (7) are also provided; the heating resistance wires (8) are arranged in a non-uniform manner, and the heating device (5) is located between the thermal insulation layer (4) and the heat preservation layer (4). between the porous gap layers (6); the heat-supplying resistance wire (8) is arranged at a position close to the inner wall of the porous gap layer (6) through a bayonet (7); The protective cover (1) is provided with an air inlet and an air outlet with a valve; when in use, the protective cover (1) covers the open end of the vertical furnace body (A); Projection is performed perpendicular to the side wall of the vertical furnace body; one side of the projection is a "﹁" type bayonet; the other side is a "﹂" type bayonet. 2. A segmented heating/cooling device according to claim 1; it is characterized in that: after putting in the external workpiece (2), there is a gap between the external workpiece and the porous gap layer (6), and the gap The width is 5-10cm. 3. A segmented heating/cooling device according to claim 1, characterized in that: a retractable ventilation duct (10) is introduced into the gap, and the introduction depth of the air duct is regulated. 4. A segmented heating/cooling device according to claim 3, characterized in that: after the retractable ventilation duct (10), there is a second gap between the ventilation duct and the porous gap layer (6). 5. A segmented heating/cooling device according to claim 3, characterized in that: the side wall of the bottom of the retractable ventilation pipe (10) is provided with holes. 6. A segmented heating/cooling device according to claim 1, characterized in that: the protective cover (1) is connected to the open end of the vertical furnace body (A) by means of snaps. 7. A segmented heating/cooling device according to claim 3, characterized in that: the protective cover (1) is provided with an air inlet at an included angle with the horizontal plane. 8. A segmented heating/cooling device according to claim 7, wherein the air inlet and the horizontal plane are at an angle of 30-60°. 9. A segmented heating/cooling device according to claim 1; characterized in that: the top of the protective cover (1) is provided with a first air outlet; the bottom side wall of the protective cover (1) is provided with a second outlet tuyere. 10. A segmented heating/cooling device according to claim 1, characterized in that: in the thermal insulation layer (4), multiple sets of temperature sensors (9) are arranged from the top to the bottom of the vertical furnace.

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