CN219449764U

CN219449764U - Heat preservation device for hydrogen furnace

Info

Publication number: CN219449764U
Application number: CN202320924362.4U
Authority: CN
Inventors: 张慧霞; 赵万方; 朱宇
Original assignee: Xi'an Gemei Metal Material Co ltd
Current assignee: Xi'an Gemei Metal Material Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-08-01
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses a heat preservation device for a hydrogen furnace, and belongs to the technical field of rare metal extrusion processing. The heat preservation device includes: an outer plate and an inner plate; a top plate is connected between the top of the outer plate and the top of the inner plate, a bottom plate is connected between the bottoms of the outer plate and the inner plate, and side plates are connected between the two sides of the outer plate and the inner plate; the shapes of the top parts of the outer plate and the inner plate are arc structures matched with the top part of the furnace mouth; correspondingly, the top plate is an arc-shaped plate matched with the top of the furnace mouth; the inner plate, the outer plate, the top plate, the bottom plate and the side plates form a hollow heat preservation device together, and the hollow heat preservation device is placed at a furnace mouth for heat preservation. The operation is simple, the recycling is realized, the service life is long, and the cost is reduced.

Description

Heat preservation device for hydrogen furnace

Technical Field

The utility model relates to the technical field of rare metal extrusion processing, in particular to a heat preservation device for a hydrogen furnace.

Background

Because tungsten and molybdenum materials have the characteristics and high plastic-brittle transition temperature, the tungsten and molybdenum materials need to be annealed for multiple times in the hot rolling process, a hydrogen furnace is generally adopted for annealing, when long plates or large plates are rolled, the furnace mouth temperature and the temperature in a furnace body are greatly different (about 30 ℃ different), the furnace mouth temperature is too low, the temperature in the furnace body is too high, the microstructure non-uniformity of the materials is caused in the annealing process due to uneven temperature gradient, the difference between the macroscopic hardness values and the Vickers hardness value HV (10) 30-50 is shown, the subsequent processing and the use aspects of the materials are very unfavorable, in the prior art, the furnace mouth is blocked by adopting furnace bricks generally, but the service life of the furnace bricks is lower, the heat preservation effect is poor, the furnace bricks are required to be replaced basically once, and the cost is increased.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a heat preservation device for a hydrogen furnace. The heat preservation device includes: an outer plate and an inner plate;

a top plate is connected between the top of the outer plate and the top of the inner plate, a bottom plate is connected between the bottoms of the outer plate and the inner plate, and side plates are connected between the two sides of the outer plate and the inner plate;

the shapes of the top parts of the outer plate and the inner plate are arc structures matched with the top part of the furnace mouth; correspondingly, the top plate is an arc-shaped plate matched with the top of the furnace mouth;

the inner plate, the outer plate, the top plate, the bottom plate and the side plates form a hollow heat preservation device together, and the hollow heat preservation device is placed at a furnace mouth for heat preservation.

Further, the inner plate is a tungsten plate, and the outer plate, the top plate, the bottom plate and the side plates are molybdenum plates.

Further, a bracket is connected to the outer side of the outer plate, and is used for facilitating taking of the heat preservation device.

Further, the support is of a steel plate bending structure, and one end of the support is connected with the outer side of the outer plate.

Further, the top of both the outer plate and the inner plate are riveted with the top plate.

Further, the side plates are of U-shaped structures, and two side edges of the side plates are riveted with the outer sides of the outer plates and the outer sides of the inner plates respectively.

Further, the bottom plate is of a U-shaped structure, and two side edges of the bottom plate are riveted with the outer plate, the inner plate and the outer sides of bottoms of two side edges of the side plates.

The technical scheme provided by the utility model has the beneficial effects that: the utility model adopts the design concept of fitting the shape of the furnace mouth, and the hollow heat preservation device is formed by the inner plate, the outer plate, the top plate, the bottom plate and the side plates, and is placed at the furnace mouth for heat preservation, so that the operation is simple, the furnace mouth can be recycled, the service life is long, and the cost is reduced; in addition, according to the characteristics of materials and practical production experience, different materials are selected as heat insulation materials, so that the heat insulation effect is achieved, the utilization rate of the materials is higher, the manufacturing cost of the zirconium brick is 1200 yuan/set, the service life of the zirconium brick is prolonged by more than 10 times compared with that of the original zirconium brick, and the price of the zirconium brick is 300 yuan/block, so that the zirconium brick is equivalent to saving the cost by 2.5 times, has a certain economic value, and reduces the production cost.

Drawings

FIG. 1 is a perspective view of a thermal insulation device for a hydrogen furnace provided by the utility model;

FIG. 2 is a perspective view of a thermal insulation device for a hydrogen furnace provided by the utility model;

FIG. 3 is a perspective view of a thermal insulation device for a hydrogen furnace provided by the utility model;

fig. 4 is a schematic view of the shape of the furnace mouth provided by the utility model.

Reference numerals: 1-an outer plate; 2-an inner plate; 3-top plate; 4-a bottom plate; 5-side plates; 6-bracket.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 4, fig. 4 is a shape of a furnace mouth, in the prior art, the furnace mouth is usually plugged by using furnace bricks due to a large temperature gradient, but the furnace bricks have a low service life and poor heat preservation effect, and the furnace bricks need to be replaced after being basically used once, so the heat preservation device for the hydrogen furnace provided by the utility model comprises the following components: an outer plate 1, an inner plate 2, a top plate 3, a bottom plate 4 and two side plates 5; in order to minimize the temperature loss of the furnace mouth, when the heat preservation device is designed, the shape of the heat preservation device is consistent with that of the furnace mouth, therefore, the shapes of the top parts of the outer plate 1 and the inner plate 2 are arc-shaped structures matched with the top parts of the furnace mouth, the shape of the top plate 3 is an arc-shaped plate matched with the top parts of the furnace mouth, the side plate 5 is U-shaped, the bottom plate 4 is U-shaped, when the heat preservation device is connected, the tops of the outer plate 1 and the inner plate 2 are riveted with the top plate 3, the two sides of the two side plates 5 are riveted with the outer sides of the two opposite sides of the outer plate 1 and the inner plate 2, the two sides of the bottom plate 4 are riveted with the bottoms of the two sides of the outer plate 1, the inner plate 2 and the side plate 5, the inner plate 1, the top plate 3, the bottom plate 4 and the side plate 5 jointly form the hollow heat preservation device, and are placed in the furnace mouth for heat preservation.

Secondly, because the furnace mouth temperature exceeds 1000 ℃, when designing, in consideration of operability, the bracket 6 is designed, and the bracket is convenient to take, and because the temperature is lower here, the bracket is formed by bending a steel plate with the thickness of 5mm for saving cost.

In addition, the front end of the furnace mouth is lower in bearing temperature and lower than 1000 ℃, so that the outer plate at the front end (near the outside) adopts a molybdenum plate, the outer plate near the inside of the furnace body adopts a tungsten plate to bear higher temperature, the service life is longer and is about 1.5 times of that of the molybdenum plate, the top plate 3 is made of high-temperature molybdenum and has the same shape radian as the furnace mouth, the high-temperature molybdenum can be used at 1000-1400 ℃ with the best effect, the high-temperature molybdenum is suitable, and the bottom plate 4 and the side plate 5 can also be molybdenum plates.

It is worth to say that, in the utility model, the design concept of fitting the shape of the furnace mouth is adopted, the hollow heat preservation device is formed by the inner plate, the outer plate, the top plate, the bottom plate and the side plates, and the hollow heat preservation device is placed at the furnace mouth for heat preservation, so that the operation is simple, the device can be recycled, the service life is long, and the cost is reduced; in addition, according to the characteristics of the materials and the practical experience of production, different materials are selected as the heat insulation materials, so that the heat insulation effect is achieved, the utilization rate of the materials is higher, the economic value is certain, and the production cost is reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A thermal insulation device for a hydrogen furnace, the thermal insulation device comprising: an outer plate (1) and an inner plate (2);

a top plate (3) is connected between the top of the outer plate (1) and the top of the inner plate (2), a bottom plate (4) is connected between the bottoms, and side plates (5) are connected between the two sides;

the top shapes of the outer plate (1) and the inner plate (2) are arc structures matched with the top of the furnace mouth; correspondingly, the shape of the top plate (3) is an arc plate matched with the top of the furnace mouth;

the inner plate (2), the outer plate (1), the top plate (3), the bottom plate (4) and the side plates (5) form a hollow heat preservation device together, and the hollow heat preservation device is placed at a furnace mouth for heat preservation.

2. The heat preservation device for a hydrogen furnace according to claim 1, wherein the inner plate (2) is a tungsten plate, and the outer plate (1), the top plate (3), the bottom plate (4) and the side plates (5) are molybdenum plates.

3. The heat preservation device for a hydrogen furnace according to claim 1, wherein a bracket (6) is connected to the outer side of the outer plate (1) for facilitating the taking of the heat preservation device.

4. A heat preservation apparatus for a hydrogen furnace according to claim 3, wherein the bracket (6) has a steel plate bending structure, and one end is connected to the outside of the outer plate (1).

5. A heat preservation apparatus for a hydrogen furnace according to claim 1, characterized in that the top of the outer plate (1) and the inner plate (2) are riveted with the top plate (3).

6. The heat preservation device for the hydrogen furnace according to claim 1, wherein the side plates (5) are of a U-shaped structure, and two side edges of the side plates (5) are riveted with the outer sides of the outer plate (1) and the inner plate (2) respectively.

7. The heat preservation device for a hydrogen furnace according to claim 6, wherein the bottom plate (4) has a U-shaped structure, and two sides of the bottom plate (4) are riveted with the outer plate (1), the inner plate (2) and the bottom outer sides of two sides of the side plate (5).