Fireproof prefabricated part with rapid cooling function

Abstract

The utility model provides a fire-resistant prefabricated member with a rapid cooling function. The fire-resistant prefabricated member comprises a fire-resistant base body; the metal base is fixedly connected to one side of the non-working surface of the refractory base body, and a hollow cooling cavity is formed in the metal base; the metal fins are fixedly connected to the surface of the base and extend towards the interior of the fireproof base body, and the extending depth is 30%-70% of the thickness of the fireproof base body; according to the utility model, the design structure is reasonable, the perfect combination of efficient cooling and long-acting service is realized through the design of a metal and refractory material composite structure, a cooling system formed by the metal base and the metal fins can quickly lead out heat accumulated in the refractory base body, and the heat dissipation efficiency can be obviously improved; besides, the thermal stress between the metal and the refractory material is effectively relieved through the reinforcing layer and the wrapping layer, the thermal shock resistance and the structural stability of the prefabricated part are greatly enhanced, and the metal assembly subjected to antioxidant treatment shows excellent durability in a high-temperature corrosion environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refractory precast field, specifically relates to a kind of refractory precast with quick cooling function. BACKGROUND

[0002] Refractory precast is made of refractory raw material as main body preformed block or component, and is completed by batching, forming, curing and baking process, and can be directly installed in specific position of industrial kiln lining, compared with traditional site cast refractory material, precast has the advantages of high dimensional accuracy, convenient installation, short curing cycle, and is widely used in high-temperature equipment of metallurgy, building materials, chemical industry and other industries.

[0003] The function of refractory precast is to play the effect of heat preservation and insulation in kiln, however, in some specific occasions (such as kiln burner periphery, rotary kiln wheel belt below and other local areas), the local area overheating will cause the precast to peel off, which seriously affects the service life, and the traditional solution mainly relies on external forced cooling or intermittent shutdown cooling, which not only has high energy consumption, but also affects the continuity of production. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of refractory precast with quick cooling function to solve the problem that precast in local area of existing kiln mentioned in background art is prone to peel off due to long time in high temperature state, and normal production is prone to be affected when forced cooling or intermittent shutdown cooling.

[0005] The technical scheme adopted by the utility model is: a kind of refractory precast with quick cooling function, comprising:

[0006] Refractory base body;

[0007] Metal base, which is fixedly connected to the non-working side of the refractory base body, has a hollow cooling chamber in its interior;

[0008] Metal fin, which is fixedly connected to the surface of the base and extends to the interior of the refractory base body, with an extension depth of 30%-70% of the thickness of the refractory base body;

[0009] Wherein, the heat of the refractory base body during work is quickly transferred to the metal base through the metal fin, and the cooling medium is introduced into the cooling chamber of the metal base to realize heat exchange, so as to reduce the temperature of the refractory base body.

[0010] The outer wall surface of the metal fin is provided with a reinforcing layer, and the outer structure composed of the reinforcing layer and the metal fin is provided with a wrapping layer.

[0011] The reinforcing layer is a silicon carbide oxidation-resistant coating coated on the outer surface of the metal fin, with a thickness of 20-100 μm.

[0012] The wrapping layer is a carbon fiber woven mesh, a ceramic limiting felt or a graphite foil, and has a thickness of 0.2-1.5mm.

[0013] The number of the metal fins is at least two, and the metal fins are evenly distributed inside the refractory base.

[0014] The width of the metal fins gradually decreases from one end of the working surface of the refractory base to the other end of the non-working surface.

[0015] The metal fins have a flat plate structure or a corrugated structure.

[0016] The liquid inlet pipe and the liquid outlet pipe are arranged on the outer wall of the metal base, and the liquid inlet pipe and the liquid outlet pipe are connected to the cooling chamber and extend to the outside of the base.

[0017] The metal base and the metal fins constitute a cooling system that can quickly lead out the heat accumulated in the refractory base, and can significantly improve the heat dissipation efficiency.

[0018] The metal base and the metal fins constitute a cooling system that can quickly lead out the heat accumulated in the refractory base, and can significantly improve the heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 It is a sectional view of the utility model;

[0022] Figure 4 It is a structural schematic view of the metal fins, the reinforcing layer and the wrapping layer of the utility model;

[0023] Figure 5 It is a metal fin structure view in another embodiment of the utility model.

[0024] Among them:

[0025] 1, refractory base; 2, metal fin; 3, metal base; 4, cooling chamber; 5, liquid inlet pipe; 6, liquid outlet pipe; 7, reinforcing layer; 8, wrapping layer. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0027] As shown in the figure, a refractory precast with quick cooling function comprises:

[0028] The refractory base 1 is made of high alumina, magnesia or silicon carbide refractory material, and is mainly used for directly contacting the high-temperature environment of the kiln.

[0029] The metal base 3 is fixedly connected to the non-working side of the refractory base 1, and has a hollow cooling chamber 4 in the interior thereof.

[0030] The metal fin 2 is fixedly connected to the surface of the base and extends to the interior of the refractory base 1, and the extension depth is 30%-70% of the thickness of the refractory base 1.

[0031] In this example, the metal fin 2 and the metal base 3 are directly welded or integrally formed, and after the formation of the two, they are positioned in a mold, refractory castable is poured in the mold, and after vibration compaction and baking, the whole refractory precast is formed. In addition, in order to further improve the connection firmness of the metal base 3 and the refractory base 1, Y-shaped anchor nails can also be arranged on the metal base 3 to strengthen the connection structure of the two by anchoring.

[0032] The heat of the refractory base 1 during work is quickly transferred to the metal base 3 through the metal fin 2, and the cooling medium is introduced into the cooling chamber 4 of the metal base 3 to realize heat exchange and take away the heat, so as to reduce the temperature of the refractory base 1.

[0033] The outer wall surface of the metal fin 2 is provided with a reinforcing layer 7, and the whole structure composed of the reinforcing layer 7 and the metal fin 2 is provided with a wrapping layer 8 outside. In this example, the reinforcing layer 7 is a silicon carbide oxidation-resistant coating coated on the outer surface of the metal fin 2, and the thickness is 20-100 μm. The reinforcing layer 7 is mainly used to prevent the oxidation of the metal fin 2, resist the chemical corrosion of the metal fin 2, maintain the high thermal conductivity of the metal fin 2, and prolong the service life of the whole technical fin.

[0034] The wrapping layer 8 is a carbon fiber woven net, a ceramic limiting felt or a graphite foil, and the thickness is 0.2-1.5mm, in the example, the wrapping layer 8 is a carbon fiber woven net, which is used as a buffer transition layer, on one hand, the interface stress generated by the thermal expansion coefficient difference between the metal fin 2 and the refractory base 1 can be effectively absorbed by the elastic deformation capacity of the wrapping layer 8, so as to prevent the interface cracking between the metal fin 2 and the refractory base 1, on the other hand, the sharp temperature change of the gradient metal fin 2 and the refractory material piece is used to avoid the problem of local stress concentration.

[0035] The number of the metal fin 2 is at least two, and is uniformly distributed in the interior of the refractory base 1, which is used to uniformly conduct the high temperature in the refractory base 1, so as to avoid the problem of local high temperature.

[0036] The width of the metal fin 2 gradually decreases from one end of the working surface of the refractory base 1 to the non-working surface, so that more heat can be captured through the wider end of the metal fin 2, and the narrow end of the non-working surface can realize efficient heat output and improve the heat conduction efficiency.

[0037] In the example, the metal fin 2 has a flat plate structure.

[0038] It can be understood that in other embodiments, as shown in the figure, Figure 5 The metal fin 2 has a corrugated structure, which can increase the contact area between the metal fin 2 and the refractory base 1, improve the heat conduction effect, and also can enhance the connection firmness of the refractory base 1 and the metal base 3.

[0039] The liquid inlet pipe 5 and the liquid outlet pipe 6 are installed on the outer wall of the metal base 3, and the liquid inlet pipe 5 and the liquid outlet pipe 6 are connected with the cooling chamber 4, the liquid inlet pipe 5 and the liquid outlet pipe 6 extend to the outside of the base, the liquid inlet pipe 5 and the liquid outlet pipe 6 are connected with the external pipeline, so as to guide the cooling medium (such as water) into the cooling chamber 4, so as to realize the effect of taking away the heat by the cooling medium.

[0040] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A refractory preform having a rapid cooling function, characterized by, The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof.

2. A refractory preform with a rapid cooling function according to claim 1, characterized in that, The application relates to a heat-resistant base and a cooling device thereof.

3. A refractory preform with a rapid cooling function according to claim 2, characterized in that, The application relates to a heat-resistant base and a cooling device thereof.

4. A refractory preform with a rapid cooling function according to claim 2, characterized in that, The application relates to a heat-resistant base and a cooling device thereof.

5. A refractory preform with a rapid cooling function according to claim 1, wherein The application relates to a heat-resistant base and a cooling device thereof.

6. A refractory preform with a rapid cooling function according to claim 1, wherein The application relates to a heat-resistant base and a cooling device thereof.

7. A refractory preform with a rapid cooling function according to claim 1, wherein The application relates to a heat-resistant base and a cooling device thereof.

8. A refractory preform with a rapid cooling function according to claim 1, wherein The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device thereof. The application relates to a heat-resistant base and a cooling device

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