High-heat-preservation furnace wall

Abstract

The utility model relates to a furnace wall with high heat preservation performance, which comprises a wall plate, a furnace wall upright post and a closed inserting plate, the wall plate is specifically arranged, and particularly a cavity inlet section and a cavity vertical section of a heat preservation cavity are specifically arranged, so that the heat preservation in the furnace can be realized through the heat preservation cavity when the heat preservation in the furnace is required; when heat dissipation is needed, the technical effect of efficient heat dissipation can be achieved by conducting gas communication between the heat preservation cavity and the interior of the furnace.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial furnaces, and particularly relates to a furnace wall with high thermal insulation performance. Background Art

[0002] In the field of industrial furnaces, the thermal insulation of furnace walls is receiving more and more attention. Furnace walls with good thermal insulation can become an effective component to prevent the loss of heat source in the industrial furnace and maintain the temperature in the furnace. Especially in the production of graphite electrodes, carbon paste, carbon bricks (blocks), carbon anodes, carbon fibers and other fields, the requirements for the thermal insulation of furnace walls are even higher.

[0003] Existing technologies primarily use refractory bricks as furnace wall components, using refractory bricks or prefabricated furnace walls made of refractory bricks to maintain internal furnace temperatures. To enhance thermal insulation, existing technologies also incorporate cavities within the furnace walls to reduce heat transfer and improve thermal insulation. However, these cavities are integrally embedded within the furnace walls, which can hinder efficiency when heat dissipation is required after insulation is complete.

[0004] Chinese utility model patent publication CN205655669U discloses an environmentally friendly, highly efficient and energy-saving industrial kiln, which achieves thermal insulation by providing an insulation layer and a ring-shaped hollow air chamber to adjust the temperature. However, particulate matter is easily mixed into the hollow air chamber, resulting in a poor effect. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a high heat-insulating furnace wall which can be closed to avoid excessive circulation of hot air.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-heat-insulating furnace wall comprises a wall panel, furnace wall columns and a closed inserting plate.

[0008] The wall panels include an upper wall panel and a lower wall panel, wherein the upper wall panel is arranged at the top and the lower wall panel is arranged at the bottom, and the furnace wall columns are arranged between adjacent wall panels.

[0009] Insulation cavities are provided in both the wall panels and the furnace wall columns, and the insulation cavities include a cavity entrance section and a cavity vertical section; in the insulation cavity provided in the wall panel, the cavity entrance section is provided on the upper wall panel, and the cavity vertical section vertically passes through the upper wall panel to the lower wall panel; in the insulation cavity provided in the furnace wall column, the cavity entrance section is provided at the upper part of the furnace wall column, and the cavity vertical section vertically passes through to the lower part of the furnace wall column.

[0010] The cavity entrance section is arranged horizontally, with the open end of the cavity entrance section facing the furnace, and the other end of the cavity entrance section is connected to the top opening of the cavity vertical section, and the bottom of the cavity vertical section is enclosed in the lower wall plate or the furnace wall column.

[0011] The bottom wall of the cavity entrance section is an inclined entrance inclined portion, and the inclination of the entrance inclined portion is such that the end facing the furnace is the lower end, and the end connected to the cavity vertical section is the higher end.

[0012] A closed cavity is vertically arranged at the junction of the cavity entrance section and the cavity vertical section. The closed cavity is a plate-shaped cavity that extends downward from the top of the upper wall plate or the top of the furnace wall column to the lower part of the cavity entrance section. The closed cavity is used to accommodate the closed plug plate.

[0013] Preferably, the bottom end of the upper wall plate is fixedly connected to the top end of the lower wall plate.

[0014] Preferably, the wall panel also includes a middle wall panel, and there are one or more middle wall panels, and the top end of the uppermost middle wall panel is fixedly connected to the bottom end of the upper wall panel, and the bottom end of the lowermost middle wall panel is fixedly connected to the top end of the lower wall panel, and the vertical section of the cavity also vertically passes through one or more middle wall panels.

[0015] Preferably, the included angle between the inlet inclined portion and the vertical direction is α, which satisfies 30°≤α≤85°.

[0016] Preferably, the width of the closed cavity is B1, the width of the cavity entrance section intersecting the closed cavity is B2, satisfying B1>B2, and the width of the closed plug plate is B3, satisfying B3>B2.

[0017] Preferably, B1:B3:B2=(0.9~1.1):(0.85~1.05):(0.5~0.8) is satisfied.

[0018] Preferably, the thickness of the closed insert is equal to or substantially equal to the thickness of the closed cavity.

[0019] Preferably, the vertical section of the cavity in the lower wall plate is a blind hole structure, and the lowest end of the vertical section of the cavity in the furnace wall column is also a blind hole structure.

[0020] Preferably, a plurality of heat-insulating cavities are provided in each wall panel, and one or more heat-insulating cavities are provided in each furnace wall column.

[0021] Preferably, the height of the closed plug plate is greater than the height of the closed cavity.

[0022] The utility model has the following beneficial effects:

[0023] (1) The utility model provides a cavity entrance section that is connected to the vertical section of the cavity and can be opened and closed, so that when insulation is required, a closed plug plate is inserted into the closed cavity to prevent the air in the insulation cavity from circulating with the gas in the furnace, thereby forming an insulating cavity. The insulation cavity separates the inside and outside of the furnace wall, thereby preventing excessive heat conduction and enhancing the insulation performance of the furnace wall. Since the cavity entrance section and the closed plug plate that are connected to the furnace are provided, when insulation is completed, the closed plug plate is pulled out, and the high-temperature gas in the furnace can quickly exchange heat with the gas in the cavity, thereby dissipating the temperature relatively quickly. This allows real-time adjustment according to the different needs of the industrial furnace at different time periods, achieving both efficient insulation in the insulation stage and improved efficiency in the heat dissipation stage.

[0024] (2) Since the cavity entrance section is open toward the furnace, the powder and other materials in the furnace can easily enter the cavity vertical section through the cavity entrance section, which will have a negative impact on the heat preservation effect of the cavity vertical section and waste the powder. The present invention provides an entrance inclined portion at the cavity entrance section, and sets the end close to the furnace as the inclined lower end. When the powder enters the cavity entrance section, it will slide back into the furnace through the entrance inclined portion due to gravity, thereby avoiding the technical problem of the powder entering the cavity vertical section. At the same time, by reasonably setting the angle between the inlet inclined part and the vertical section, the powder can slide back into the furnace smoothly without causing the inner part of the furnace wall to be too thin (if the angle is too large, the area of ​​the inner part of the furnace wall occupied by the inlet inclined part will be too large, which will also reduce the thermal insulation performance. If the angle is too small, the powder will not slide back into the furnace smoothly). Therefore, by setting a reasonable angle range, the technical effect of preventing the powder from being enriched in the vertical section of the cavity is enhanced, thereby ensuring the overall reliability and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic side sectional structural diagram of the upper wall plate of one embodiment of the high thermal insulation furnace wall of the present invention.

[0026] Figure 2 This is a schematic side sectional structural diagram of an upper wall plate including a closed insert plate in one embodiment of the high thermal insulation furnace wall of the present invention.

[0027] Figure 3 This is a schematic diagram of the main appearance structure of the high thermal insulation furnace wall of the utility model.

[0028] Figure 4 for Figure 3 Schematic diagram of the perspective structure.

[0029] Figure 5 Schematic diagram of the three-dimensional structure of the lower wall panel.

[0030] Among them, 001-upper wall plate; 002-middle wall plate; 003-lower wall plate; 004-furnace wall column;

[0031] 101-cavity entrance section; 102-cavity vertical section;

[0032] 111 - inlet inclined portion; 112 - closed cavity; 113 - closed insert;

[0033] α-Angle between the inlet inclined portion and the vertical direction. DETAILED DESCRIPTION

[0034] The process and technical solutions of the present invention are further illustrated below by combining the embodiments and drawings. The orientations involved in this specification are based on the orientations of the present invention during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships. Specific implementation methods Unless otherwise stated, each feature is only an example of a series of equivalent or similar features. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other alternative features that are equivalent or have similar purposes. Unless otherwise stated, each feature is only an example of a series of equivalent or similar features. The above is only to help understand the present invention and should not be regarded as a specific limitation of the present invention.

[0035] The present invention will be further described in detail below with reference to specific implementation methods.

[0036] Example 1:

[0037] like Figure 1-5 The figure shows a high heat-insulating furnace wall of this embodiment. Figure 3 and Figure 4 As shown, the high thermal insulation furnace wall includes a wall panel, a furnace wall column 004 and a closed plug plate 113.

[0038] like Figure 3 As shown, the wall panels include an upper wall panel 001 and a lower wall panel 003 , the upper wall panel 001 is arranged at the top, the lower wall panel 003 is arranged at the bottom, and the furnace wall columns 004 are arranged between adjacent wall panels.

[0039] And as Figure 3 As shown, in this embodiment, a middle wall panel 002 is further provided between the upper wall panel 001 and the lower wall panel 003. One or more middle wall panels 002 are provided (one is provided in this embodiment), and the top end of the uppermost middle wall panel 002 is fixedly connected to the bottom end of the upper wall panel 001, and the bottom end of the lowermost middle wall panel 002 is fixedly connected to the top end of the lower wall panel 003.

[0040] like Figure 1 and Figure 2 As shown, an insulation cavity is provided in both the wall panel and the furnace wall column 004, and the insulation cavity includes a cavity entrance section 101 and a cavity vertical section 102; in the insulation cavity provided in the wall panel, the cavity entrance section 101 is provided on the upper wall panel 001, and the cavity vertical section 102 vertically passes through from the upper wall panel 001 to the lower wall panel 003; Figure 4 As shown, the cavity vertical section 102 of this embodiment also vertically penetrates the middle wall plate 002; in the insulation cavity set in the furnace wall column 004, the cavity entrance section 101 is set at the upper part of the furnace wall column 004, and the cavity vertical section 102 vertically penetrates to the lower part of the furnace wall column 004.

[0041] like Figure 1 As shown, the cavity inlet section 101 is arranged horizontally, the opening of the cavity inlet section 101 faces the furnace, and the other end of the cavity inlet section 101 is connected to the top opening of the cavity vertical section 102, as shown in FIG. Figure 5 As shown, the bottom of the cavity vertical section 102 is enclosed in the lower wall plate 003 or the furnace wall column 004.

[0042] like Figure 1 As shown, the bottom wall of the cavity inlet section 101 is an inlet inclined portion 111 arranged obliquely, and as shown Figure 3 and Figure 4 As shown, the inlet inclined portion 111 is inclined in such a manner that the end facing the furnace is the lower end, and the end connected to the cavity vertical section 102 is the higher end.

[0043] like Figure 1 As shown, a closed cavity 112 is vertically provided at the junction of the cavity inlet section 101 and the cavity vertical section 102. The closed cavity 112 is a plate-shaped cavity that extends downward from the top of the upper wall plate 001 or the top of the furnace wall column 004 to the lower part of the cavity inlet section 101. Figure 2 As shown, the closed cavity 112 is used to accommodate the closed plug plate 113.

[0044] In other embodiments, the bottom end of the upper wall panel 001 may be directly fixedly connected to the top end of the lower wall panel 003 without providing a middle wall panel.

[0045] The included angle between the inlet inclined portion and the vertical direction is α. In this embodiment, the angle α can be set to 35°, 45° or 60°, all of which satisfy 30°≤α≤85°.

[0046] To ensure that the sealing plate can completely seal the cavity entrance section, the width of the sealed cavity 112 is B1, and the width of the cavity entrance section 101 at the intersection with the sealed cavity 112 is B2, satisfying B1>B2. The width of the sealing plate 113 is B3, satisfying B3>B2. For example, in this embodiment, B1 can be set to 1m, B3 can also be set to 1m, and B2 can be set to 0.6m. This setting also satisfies the requirement of B1:B3:B2 = (0.9-1.1):(0.85-1.05):(0.5-0.8).

[0047] Similarly, in order to enable the closing plug plate to more comprehensively seal the cavity entrance section, the thickness of the closing plug plate 113 of this embodiment is equal to or substantially equal to the thickness of the closed cavity 112, so that the two are tightly fitted, thereby avoiding excessive airflow.

[0048] Furthermore, in this embodiment, the height of the sealing plate 113 is greater than the height of the sealing cavity 112. This ensures that when inserted, the top of the sealing plate 113 protrudes above the top of the furnace wall, thereby ensuring that the sealing plate 113 can be efficiently removed when it is needed, and also preventing excessive gas leakage through the top.

[0049] like Figure 4 As shown, the vertical cavity section 102 in the lower wall plate 003 is a blind hole structure, and the lowest end of the vertical cavity section 102 in the furnace wall column 004 is also a blind hole structure. That is, the bottom end of the cavity is not through, but the blind hole is set in the furnace wall or furnace wall column, so that the top cavity entrance section can be closed or opened as needed.

[0050] The same as Figure 3 and Figure 4 As shown, a plurality of insulation cavities are provided in each wall panel (three are shown as an example in this embodiment), and one or more insulation cavities are provided in each furnace wall column 004 (one insulation cavity is shown as an example in this embodiment).

[0051] It should be noted that Figure 3 and Figure 4 It is just a structural diagram. In order to express the example more clearly, it shows one of the closed plug plates 113 and one of the closed cavities 112 by way of example. This does not mean that no closed cavity 112 is provided in other insulation cavities. Generally, a closed cavity 112 and a closed plug plate 113 are provided in each insulation cavity.

[0052] When this embodiment is working: before heating or keeping the temperature in the furnace, the closed plug plate 113 is inserted into the closed cavity 112, so that the gas in the insulation cavity can be isolated from the gas in the furnace. Even if the temperature of the gas in the furnace is very high, it will not transfer too much heat to the gas in the insulation cavity, so that the insulation cavity achieves the insulation effect; when the insulation is completed and it is necessary to dissipate the temperature, the closed plug plate 113 is pulled out from the closed cavity 112, so that the gas in the furnace and the gas in the insulation cavity can be mixed and heat exchanged, thereby achieving the technical effect of relatively rapid temperature dissipation.

[0053] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A high thermal insulation furnace wall, characterized in that: The high heat-insulating furnace wall comprises a wall panel, a furnace wall column (004) and a closed insert plate (113); The wall panels include an upper wall panel (001) and a lower wall panel (003), wherein the upper wall panel (001) is arranged at the top and the lower wall panel (003) is arranged at the bottom, and the furnace wall columns (004) are arranged between adjacent wall panels; A heat-insulating cavity is provided in both the wall panel and the furnace wall column (004), and the heat-insulating cavity includes a cavity entrance section (101) and a cavity vertical section (102); in the heat-insulating cavity provided in the wall panel, the cavity entrance section (101) is provided on the upper wall panel (001), and the cavity vertical section (102) vertically penetrates from the upper wall panel (001) to the lower wall panel (003); in the heat-insulating cavity provided in the furnace wall column (004), the cavity entrance section (101) is provided at the upper part of the furnace wall column (004), and the cavity vertical section (102) vertically penetrates to the lower part of the furnace wall column (004); The cavity entrance section (101) is arranged horizontally, the opening end of the cavity entrance section (101) faces the furnace, the other end of the cavity entrance section (101) is connected to the top opening of the cavity vertical section (102), and the bottom of the cavity vertical section (102) is enclosed in the lower wall plate (003) or the furnace wall column (004); The bottom wall of the cavity inlet section (101) is an inlet inclined portion (111) arranged obliquely, and the inlet inclined portion (111) is inclined in such a manner that the end facing the furnace is the lower end, and the end connected to the cavity vertical section (102) is the higher end; A closed cavity (112) is vertically provided at the junction of the cavity inlet section (101) and the cavity vertical section (102). The closed cavity (112) is a plate-shaped cavity, extending downward from the top of the upper wall plate (001) or the top of the furnace wall column (004) to the lower part of the cavity inlet section (101). The closed cavity (112) is used to accommodate the closed plug plate (113).

2. The high thermal insulation furnace wall according to claim 1, characterized in that: The bottom end of the upper wall plate (001) is fixedly connected to the top end of the lower wall plate (003).

3. The high thermal insulation furnace wall according to claim 1, characterized in that: The wall panel also includes a middle wall panel (002), one or more middle wall panels (002) are provided, and the top end of the uppermost middle wall panel (002) is fixedly connected to the bottom end of the upper wall panel (001), and the bottom end of the lowermost middle wall panel (002) is fixedly connected to the top end of the lower wall panel (003), and the cavity vertical section (102) also vertically penetrates one or more middle wall panels (002).

4. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: The included angle α between the inlet inclined portion (111) and the vertical direction satisfies 30°≤α≤85°.

5. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: The width of the closed cavity (112) is B1, the width of the cavity entrance section (101) intersecting the closed cavity (112) is B2, satisfying B1>B2, and the width of the closed plug plate (113) is B3, satisfying B3>B2.

6. The high thermal insulation furnace wall according to claim 5, characterized in that: Satisfies B1:B3:B2=(0.9~1.1):(0.85~1.05):(0.5~0.8).

7. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: The thickness of the closed insert plate (113) is equal to or substantially equal to the thickness of the closed cavity (112).

8. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: The vertical section (102) of the cavity in the lower wall plate (003) is a blind hole structure, and the lowest end of the vertical section (102) of the cavity in the furnace wall column (004) is also a blind hole structure.

9. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: A plurality of heat-insulating cavities are arranged in each wall panel, and one or more heat-insulating cavities are arranged in each furnace wall column (004).

10. The high thermal insulation furnace wall according to claim 2 or 3, characterized in that: The height of the closed insert plate (113) is greater than the height of the closed cavity (112).

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