TWM667240U - Precast device for heating furnace cooling pipe - Google Patents

Abstract

The invention relates to a precast device for cooling pipes of a heating furnace, which includes a first precast part, a second precast part and a plurality of fixing parts. The first precast part has a first connecting part at both ends, and the first precast part forms a first accommodation space, the second precast part has a second connecting part at both ends, and the second precast part forms a second accommodation space, and the second precast part abuts against the first connecting part of the first precast part through the second connecting part, so that the first accommodation space of the first precast part and the second accommodation space of the second precast part jointly form a pipe accommodation space. A plurality of fixing parts fixedly connect the first precast part and the second precast part. In this way, the precast device can cover the cooling pipe of the heating furnace to achieve a heat insulation effect.

Description

Precast device for heating furnace cooling pipe

This invention is about a precast device for the cooling pipe of a heating furnace. It is used as a heat insulation structure of the cooling pipe. The precast device is pre-made in the factory and then assembled in the heating furnace, providing a heat insulation structure that is easy to install and maintain.

When manufacturing steel products such as steel plates, steel bars or steel strips, the steel raw materials need to be made into steel billets first, and then the steel billets are heat treated and shaped into the shapes of various products. The steel billet heating furnace mainly has heating elements and cooling pipes. The cooling pipes are called walking beams and stationary beams. The walking beams and stationary beams are perpendicular to each other, and the stationary beams are set on the ground to support the walking beams. The steel billets are placed on the rails on the walking beams so that they are moved and heated at the same time. Heating the steel billets requires extremely high temperatures. Therefore, in order to prevent the structure of the heating furnace from being damaged by high temperatures, channels for cooling water to flow are provided in the walking beams and stationary beams so that the cooling water can maintain the temperature of the walking beams and stationary beams.

In order to prevent the temperature of the cooling water from being affected by the high temperature outside and losing the cooling effect, a heat insulation structure is usually set outside the cooling pipe. The Republic of China Patent Publication No. I642889 provides a pre-cast device for covering the slideway beam and the slideway pillar, which is formed with a metal hook column on the metal plate, and then cast a heat-resistant material to form a pre-cast device, so that the metal plate is combined with the heat-resistant material through the metal embedded column. The metal plate will be welded to the slideway beam and the slideway pillar, and the pre-cast device will be filled with filler material. The United States Patent Publication No. US 6575738 B1 also provides a pre-cast device, which is provided with a welding plate and a plurality of metal hooks on the metal plate, and then cast to form a refractory shell.

From the two previous patents, it can be seen that the current pre-cast device usually uses metal plates to bond alloy hooks, and then casts heat-resistant materials to form the pre-cast device. The metal hooks are used to bond and strengthen the strength of the pre-cast device. In addition, there is also a method that does not use assembled pre-cast devices, which is to directly cast heat-resistant materials on the outside of the pipeline on site, so that the pipeline is covered with a one-piece heat-resistant material. However, the structure of first forming a metal hook on the metal plate is more complicated, and the method of welding the metal plate to the pipeline or casting a one-piece heat-resistant material on site is not conducive to implementation in a narrow pipeline space.

Therefore, how to provide a heat-insulating structure that is easy to construct and does not require complex structures is what the creators are thinking about.

Today, the creator has found that the existing insulation structure of the cooling pipe of the heating furnace still has many deficiencies in actual implementation, so he improved it with his rich professional knowledge and many years of practical experience, and developed this creation accordingly.

In order to achieve the above-mentioned implementation purpose, the present invention provides a pre-cast device for a cooling pipeline of a heating furnace, which is covered on a cooling pipeline of the heating furnace. The pre-cast device includes a first pre-cast part, a second pre-cast part and a plurality of fixing parts. The two ends of the first pre-cast part respectively have a first connecting part, and the first pre-cast part forms a first accommodating space. The two ends of the second pre-cast part respectively have a second connecting part, and the second pre-cast part forms a second accommodating space, and the second connecting part abuts against the first connecting part of the first pre-cast part, so that the first accommodating space of the first pre-cast part and the second accommodating space of the second pre-cast part jointly form a pipeline accommodating space. A plurality of fixing parts fixedly connect the first pre-cast part and the second pre-cast part.

In one embodiment of the present invention, the first accommodating space of the first pre-casting part and the second accommodating space of the second pre-casting part are arc-shaped.

In one embodiment of the present invention, the first pre-cast part also has a first fixing groove that passes through the inner surface and the outer surface of the first connecting part, and the first accommodating space is located on the inner surface of the first pre-cast part. The second pre-cast part also has a second fixing groove that passes through the inner surface and the outer surface of the second connecting part, and the second accommodating space is located on the inner surface of the second pre-cast part.

In one embodiment of the present invention, a plurality of fixing members are connected to the first pre-cast member and the second pre-cast member, and are located in the first fixing groove and the second fixing groove.

In one embodiment of the present invention, a first step is formed inwardly in the first fixing groove of the first pre-cast part, and a second step is formed inwardly in the second fixing groove of the second pre-cast part, so that the fixing part is disposed against the first step and the second step.

In one embodiment of the present invention, the pre-cast device further includes a plurality of metal plugs for inserting into the first fixing groove and the second fixing groove to prevent the plurality of fixing members from contacting the external environment.

In one embodiment of the present invention, a heat insulating cotton is arranged between the pre-casting device and the cooling pipeline.

In one embodiment of the present invention, the cooling pipeline is a static beam in a heating furnace.

Please refer to Figure 1. The invention discloses a precast device 2 for a heating furnace cooling pipe 1, which mainly includes a first precast part 21, a second precast part 22 and two fixing parts 3. The first precast part 21 and the second precast part 22 are semicircular or arched symmetrical structures, which are formed by casting amorphous refractory materials in a mold. In other embodiments, the first precast part 21 and the second precast part 22 can also be structures of other shapes, not limited to the embodiment described in this embodiment. The two ends of the first precast part 21 respectively have a first connecting portion 211, and the inner surface of the first precast part 21 and a first accommodating space 212 is formed between the two first connecting portions 211. The first accommodating space 212 is an arc-shaped space. The two ends of the second pre-casting 22 respectively have a second connecting portion 221, and the inner surface of the second pre-casting 22 and between the two second connecting portions 221 form a second accommodating space 222, and the second accommodating space 222 is an arc-shaped space. The two fixing members 3 are fixedly connected to the first pre-casting 21 and the second pre-casting 22, as shown in FIG4.

The first pre-cast part 21 and the second pre-cast part 22 are combined to assemble the pre-cast device 2. The first connecting portion 211 of the first pre-cast part 21 abuts against the second connecting portion 221 of the second pre-cast part 22, so that the first accommodating space 212 of the first pre-cast part 21 and the second accommodating space 222 of the second pre-cast part 22 together form a circular space, that is, a pipeline accommodating space 23, for accommodating the cooling pipeline 1 of the heating furnace.

The pre-casting device 2 of this embodiment is in the form of assembling the first pre-casting part 21 and the second pre-casting part 22 through a fixing member (not shown in FIG. 2 ). The first pre-casting part 21 needs to be provided with a first fixing groove 213, which will penetrate the inner surface and the outer surface of the first connecting portion 211 of the first pre-casting part 21, and the middle section of the first fixing groove 213 will be inwardly contracted to form a first step 214; the second pre-casting part 22 is also provided with a second fixing groove 223 corresponding to the first pre-casting part 21, and the second fixing groove 223 will penetrate the inner surface and the outer surface of the second connecting portion 221 of the second pre-casting part 22, and the middle section of the second fixing groove 223 will be inwardly contracted to form a second step 224, as shown in FIG. 2 . The fixing member of this embodiment is a screw and a nut, and the first step 214 and the second step 224 just provide the fixing member to abut against and fix. In other embodiments, the fixing member can also use other fixing structures or parts.

Please refer to Figures 3 and 4 together. This invention is a static beam installed on the cooling pipe 1 of the heating furnace. A layer of heat insulation cotton 4 can be wrapped outside the static beam, and then the first pre-cast part 21 and the second pre-cast part 22 of the pre-cast device 2 are placed on the outer side of the static beam. When the pre-cast device 2 is installed on the static beam, it is stacked from bottom to top.

When the first precast part 21 and the second precast part 22 are sleeved on the outer side of the static beam, the first fixing portion 211 of the first precast part 21 abuts against the second fixing portion 221 of the second precast part 22, so that the first fixing groove 213 is connected to the second fixing groove 223, and the first accommodating space 212 of the first precast part 21 and the second accommodating space 222 of the second precast part 22 will respectively accommodate a portion of the outer circumference of the static beam, and the fixing member 3 is penetrated through the first fixing groove 213 of the first precast part 21 and the second precast part The first precast component 21 and the second precast component 22 are fixedly secured in the second fixing groove 223 of the first and second step portions 214 and 224, so that the first precast component 21 and the second precast component 22 are combined into the precast device 2 through the fixing component 3, and the outer peripheral surface of the static beam is completely accommodated by the pipeline accommodating space 23 formed by the first accommodating space 212 and the second accommodating space 222; in this way, the precast device 2 blocks the high temperature of the heating furnace to improve the influence of the heat energy of the external environment on the cooling pipeline 1, and the thermal conductivity of the precast device 2 is about 0.5-0.6 W/m·K, so that the cooling water in the cooling pipeline 1 is kept at a certain temperature to maintain a good cooling effect.

After the fixing member 3 is locked, a metal plug 5 is inserted into the first fixing groove 213 and the second fixing groove 223. The material is, for example, high temperature resistant (e.g., temperature between 850 degrees Celsius and 1150 degrees Celsius) steel to prevent the fixing member 3 from contacting the external environment to prevent the fixing member 3 from being deformed and damaged by heat. In other embodiments, the outer surface of the metal plug 5 can be selected to be flush with the outer surface of the first joint 211 and the second joint 221, or slightly retracted, or protruded to prevent the fixing member 3 from loosening or being damaged due to high temperature. In other embodiments, the temperature resistance level of the material of the metal plug 5 can also be higher than 1150 degrees.

1. The precast device for the cooling pipe of the heating furnace of the invention is formed by combining the first joint of the first precast part and the second joint of the second precast part. The cooling pipe of the heating furnace is directly covered with the one-piece precast device, which can save complex structures and is convenient for installation in narrow pipe space, effectively improving the speed of installation.

2. The precast device for the cooling pipe of the heating furnace of the present invention forms a pipe accommodating space through the first accommodating space of the first precast part and the second accommodating space of the second precast part after assembly, which can completely accommodate the cooling pipe of the heating furnace, prevent the high temperature of the environment from being transferred to the cooling pipe, and provide a heat insulation effect.

1: Cooling pipeline 2: Pre-cast device 21: First pre-cast part 211: First joint 212: First accommodating space 213: First fixing groove 214: First step 22: Second pre-cast part 221: Second joint 222: Second accommodating space 223: Second fixing groove 224: Second step 23: Pipeline accommodating space 3: Fixing part 4: Insulation cotton 5: Metal plug

Figure 1 is an overall appearance diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 is a schematic diagram of the present invention applied to a cooling pipeline; and Figure 4 is a cross-sectional view of the present invention applied to a cooling pipeline.

2: Pre-casting device

21: The first pre-cast part

211: First joint

212: First storage space

22: Second pre-cast part

221: Second joint

222: Second storage space

223: Second fixing slot

23: Pipeline storage space

Claims (8)

A precast device for a cooling pipe of a heating furnace, which is covered on a cooling pipe of the heating furnace, and the precast device comprises: A first precast part, each of which has a first connecting portion at its two ends, and the first precast part forms a first accommodating space; A second precast part, each of which has a second connecting portion at its two ends, and the second precast part forms a second accommodating space, the second connecting portion abuts against the first connecting portion of the first precast part, so that the first accommodating space of the first precast part and the second accommodating space of the second precast part jointly form a pipe accommodating space; and A plurality of fixing parts, which fixedly connect the first precast part and the second precast part. A pre-casting device for a heating furnace cooling pipeline as described in claim 1, wherein the first accommodating space of the first pre-casting part and the second accommodating space of the second pre-casting part are arc-shaped. A pre-cast device for a heating furnace cooling pipeline as described in claim 1, wherein the first pre-cast component also has a first fixing groove that passes through the inner surface and the outer surface of the first joint, and the first accommodating space is located on the inner surface of the first pre-cast component, and the second pre-cast component also has a second fixing groove that passes through the inner surface and the outer surface of the second joint, and the second accommodating space is located on the inner surface of the second pre-cast component. A pre-casting device for a heating furnace cooling pipeline as described in claim 3, wherein the plurality of fixing parts connect the first pre-casting part and the second pre-casting part and are located in the first fixing groove and the second fixing groove. As described in claim 4, the pre-cast device for the cooling pipeline of the heating furnace, wherein the first fixing groove of the first pre-cast part is inwardly contracted to form a first step, the second fixing groove of the second pre-cast part is inwardly contracted to form a second step, and the multiple fixing parts are disposed against the first step and the second step. A pre-cast device for a heating furnace cooling pipe as described in claim 5, wherein the pre-cast device further comprises a plurality of metal plugs inserted into the first fixing groove and the second fixing groove to prevent the plurality of fixing parts from contacting the external environment. A pre-cast device for a heating furnace cooling pipeline as described in claim 1, wherein a heat insulating cotton is arranged between the pre-cast device and the cooling pipeline. A precast device for a heating furnace cooling pipe as described in claim 1, wherein the cooling pipe is a stationary beam in the heating furnace.

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