CN218134940U

CN218134940U - Lining structure of torpedo tank

Info

Publication number: CN218134940U
Application number: CN202221806515.7U
Authority: CN
Inventors: 李权辉; 刘桂丽; 陈林恒; 陶镳; 刘耕夫
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-12-27
Anticipated expiration: 2032-07-14

Abstract

The utility model discloses a lining structure of torpedo jar, lining structure outside-in include heat preservation, permanent layer and working layer in proper order, and the heat preservation comprises the crisscross laying of resistance to pressure layer and heat insulation layer, and the resistance to pressure layer is located permanent layer central line position, the heat insulation layer is located permanent layer central point and puts, and the resistance to pressure layer is high strength vermiculite board, and the heat insulation layer is ceramic fiber board or nanometer insulation panels, and the thickness of heat preservation is 15-25mm, and the thickness of resistance to pressure layer is greater than the thickness 1-3mm of heat insulation layer, and permanent layer is wax stone brick or clay brick, and the working layer is aluminium carborundum carbon brick. The utility model discloses a heat preservation to torpedo jar inner lining structure improves, can improve torpedo jar's compressive property and thermal insulation performance, when guaranteeing inner lining structure's volumetric stability, can also reduce jar body heat loss, reduces the tank shell temperature.

Description

Lining structure of torpedo tank

Technical Field

The utility model relates to a conveyer especially relates to an inside lining structure of torpedo jar.

Background

Torpedo cars are devices used in steel production to load molten iron produced in blast furnaces into steel or cast iron plants. The lining of the torpedo tank has the functions of heat preservation and insulation and preventing the tank body from being eroded by high-temperature molten metal and slag. At present, the main measure of the iron water temperature drop of the torpedo tank is to build a light insulating layer and reduce the heat dissipation of a tank shell, for example, chinese patent CN200988099Y, CN2715886Y and the like adopt asbestos as the insulating layer, but the safe use temperature of the asbestos is less than 400 ℃ (Li Gongxia main weaving, a refractory material manual (second edition)), and if the torpedo tank is heavy for a long time, asbestos-type insulating materials can be caused to lose efficacy, and further, the safety problem can be caused. The commercially available light-weight heat-insulating material mainly comprises a nano fiber board and a ceramic fiber board, and the materials are applied to a ladle heat-insulating layer in a large amount and have obvious effects. However, the torpedo ladle lining is pressed far more than the inner wall of the ladle, and the fiber product has low strength and is easy to deform in compression, so that the torpedo ladle is easy to cause the accident of overlarge molten iron leakage of brick joints in the long-time running process, and is not suitable for direct use. The high-strength vermiculite plate as a heat-insulating material is remarkably characterized by high compressive strength, normal-temperature compressive strength (compression 10%) greater than 15Mpa, heat conductivity coefficient higher than that of a nanofiber plate and a ceramic fiber plate and slightly poor heat-insulating property.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at providing a torpedo jar heat preservation masonry structure with excellent thermal insulation performance and resistance to pressure performance.

The technical scheme is as follows: the inner lining structure of torpedo jar includes heat preservation, permanent layer and working layer in proper order outside-in, the heat preservation comprises the crisscross laying of withstand voltage layer and heat insulation layer, the withstand voltage layer is located permanent layer central line position, the heat insulation layer is located permanent layer central point and puts, the thickness of withstand voltage layer is greater than the heat insulation layer.

Furthermore, the pressure-resistant layer is a high-strength vermiculite plate which is used as a supporting structure of the whole heat-insulating layer, and the high-strength vermiculite plate is used for bearing the weight, so that the compression deformation of the heat-insulating layer is reduced.

Furthermore, the heat insulation layer is a ceramic fiber board or a nano heat insulation board, so that the heat insulation layer has excellent heat insulation performance, reduces the heat loss of the tank body, and reduces the temperature of the tank shell.

Furthermore, in order to ensure that the effective volume of the torpedo ladle is not reduced, the thickness of the heat-insulating layer is 15-25mm under the condition that the thickness of the lining is not changed, so that the heat-insulating effect can be ensured, the thickness of the permanent layer is not excessively reduced, and the safety is ensured.

Furthermore, the thickness of the pressure-resistant layer is 1-3mm larger than that of the heat-insulating layer, when the thickness of the pressure-resistant layer is larger than that of the heat-insulating layer, the static pressure of the lining and the molten iron acts on the pressure-resistant layer, so that the extrusion on the heat-insulating layer is reduced, and the heat-insulating effect of the heat-insulating layer is ensured.

Further, the width of the pressure-resistant layer is 150-180mm.

Further, the width of the heat insulating layer is 120-150mm.

Further, the permanent layer is a wax stone brick or a clay brick.

Further, the working layer is an aluminum silicon carbide carbon brick.

Has the advantages that: compared with the prior art, the utility model has the advantages of as follows: the utility model discloses a high-strength vermiculite board and light ceramic fiber board or nanometer heat-insulating shield are compound builds by laying bricks or stones the heat preservation, can reduce the tank shell temperature, reduce the molten iron temperature and fall, guarantee on the one hand that ferrostatic pressure mainly acts on the vermiculite board that excels in, reduce ceramic insulation board and nanometer heat-insulating shield pressurized shrink, guarantee torpedo jar refractory material inside lining volumetric stability, improved the security of torpedo jar operation, the another side reduces calorific loss, improves economic benefits.

Drawings

Fig. 1 is the lining structure of the straight section of the torpedo tank of the utility model.

Detailed Description

The technical solution of the present invention is further explained below with reference to the following examples and drawings.

In fig. 1, an insulating layer; 11. a pressure-resistant layer; 12. a heat insulating layer; 2. a permanent layer; 3. working layer, the lining structure outside-in of torpedo jar includes heat preservation 1, permanent layer 2 and working layer 3 in proper order, and the heat preservation is by the crisscross paving of resistance to pressure layer 11 and heat insulation layer 12 and constitutes, resistance to pressure layer 11 is located permanent layer 2 central line position, and resistance to pressure layer 11 is high strength vermiculite board, and heat insulation layer 12 is ceramic fiber board or nanometer insulation panels, and permanent layer 2 is wax stone brick or clay brick, and working layer 3 is aluminium carborundum carbon brick, the torpedo jar includes conic section and straight section, and straight section lies in the heat preservation material width inequality with the conic section difference, and the conic section goes out the width little, in order to reduce the triangle seam between every ring.

Example 1: the heat preservation 1 of the straight section can body of torpedo ladle comprises the high-strength vermiculite board that 15mm is thick and the light ceramic fiberboard that 14mm is thick, wherein high-strength vermiculite board width 180mm, light ceramic fiberboard width is 120mm. The conical section heat-insulating layer is built by a high-strength vermiculite plate with the thickness of 15mm and a light ceramic fiber plate with the thickness of 14mm, wherein the width of the high-strength vermiculite plate is 160mm; the width of the light ceramic fiber board is 120mm. The permanent layers 2 of the straight section and the conical section are constructed with clay bricks, and the brick joints of each interlink clay brick are positioned at the central line of the high-strength vermiculite plate. The performance indexes of the materials used for the heat-insulating layer 1 are shown in Table 1.

TABLE 1 insulation layer Material Performance index

Example 2: the vertical section tank body heat preservation layer 1 of torpedo tank is by the high strength vermiculite board that thickness is 20mm thick and the nanometer heat-insulating shield that 19mm is thick, and wherein the vermiculite board width that excels in is 180mm, and nanometer heat-insulating shield width is 120mm. The conical section heat insulation layer consists of a high-strength vermiculite plate with the thickness of 20mm and a nano heat insulation plate with the thickness of 19mm, wherein the width of the high-strength vermiculite plate is 160mm; the width of the light-weight nano heat-insulating plate is 120mm. The straight section and the conical section are permanently lined with wax stone bricks, and the brick joint of every two rings of wax stone bricks is positioned at the central line position of the high-strength vermiculite plate. The performance indexes of the materials used for the heat-insulating layer 1 are shown in Table 2.

TABLE 2 Heat-insulating layer Material Performance index

Example 3: the vertical section of torpedo ladle body heat preservation 1 is by the high strength vermiculite board that thickness is 13mm thick and the nanometer heat-insulating shield that 12mm is thick, wherein the vermiculite board width that excels in is 180mm, and nanometer heat-insulating shield width is 120mm.

The conical section heat-insulating layer consists of a high-strength vermiculite plate with the thickness of 13mm and a nano heat-insulating plate with the thickness of 12mm, wherein the width of the high-strength vermiculite plate is 160mm; the width of the light-weight nano heat-insulating plate is 120mm. The straight section and the conical section are permanently lined with wax stone bricks, and the brick joint of every two rings of wax stone bricks is positioned at the central line position of the high-strength vermiculite plate. The performance indexes of the materials used for the insulating layer 1 are shown in Table 3.

TABLE 3 Heat-insulating layer Material Performance index

Example 4: the vertical section of the tank body heat-insulating layer 1 of the torpedo tank is composed of a high-strength vermiculite plate with the thickness of 15mm and a ceramic fiber plate with the thickness of 13mm, wherein the width of the high-strength vermiculite plate is 150mm, and the width of the nano heat-insulating plate is 130mm.

The conical section heat-insulating layer consists of a high-strength vermiculite plate with the thickness of 16mm and a nano heat-insulating plate with the thickness of 13mm, wherein the width of the high-strength vermiculite plate is 150mm; the width of the light-weight nano heat insulation plate is 120mm. The straight section and the conical section are permanently lined with wax stone bricks, and the brick joint of every two rings of wax stone bricks is positioned at the central line position of the high-strength vermiculite plate. The performance indexes of the materials used for the heat-insulating layer 1 are shown in Table 4.

TABLE 4 Heat-insulating layer Material Performance index

Comparative example 1: the difference from example 1 is that: excluding the insulating layer 1.

The thermal insulation performance of the torpedo cans composed of examples 1-4 and comparative example 1 was tested and the test results are shown in table 5. As can be seen from Table 5, through simulation calculation, after the composite heat-insulating layers are configured on the straight section and the conical section of the torpedo tank, the temperature of the tank shell is obviously reduced, and the thicker the composite heat-insulating layer is, the more obvious the heat-insulating effect is. After the torpedo tank uses the composite heat-insulating structure on site, the temperature of the tank shell is obviously reduced, and the temperature drop of molten iron is reduced.

TABLE 5 Torpedo cans insulation comparison of examples 1-4 with comparative example 1

Claims

1. The utility model provides a lining structure of torpedo jar, its characterized in that, lining structure outside-in is heat preservation (1), permanent layer (2) and working layer (3) in proper order, heat preservation (1) is by alternately paving and is constituteed with heat insulation layer (12) withstand voltage layer (11), withstand voltage layer (11) are located permanent layer (2) central line position, heat insulation layer (12) are located permanent layer (2) central point and put, the thickness of withstand voltage layer (11) is greater than heat insulation layer (12).

2. The lining structure of claim 1, wherein the pressure-resistant layer (11) is a high-strength vermiculite plate.

3. The lining structure of claim 1, wherein the thermal insulation layer (12) is a ceramic fiberboard or a nano-insulation board.

4. The lining structure of claim 1, wherein the insulating layer (1) has a thickness of 15-25mm.

5. The lining structure of claim 1, wherein the thickness of the pressure-resistant layer (11) is 1-3mm greater than the thickness of the insulating layer (12).

6. The lining structure of claim 1, wherein the width of the pressure resistant layer (11) is 150-180mm.

7. The lining structure of claim 1, wherein the width of the insulation layer (12) is 120-150mm.

8. The lining structure of claim 1, wherein the permanent layer (2) is a wax stone brick or a clay brick.

9. A lining structure according to claim 1, characterised in that the working layer (3) is an aluminium silicon carbide carbon brick.

10. The liner structure of claim 1 wherein the torpedo includes a tapered section and a straight section.