CN219301333U - Heat-insulating flame-explosion-resistant impact electric furnace flue gas pipeline - Google Patents

Abstract

The utility model relates to a heat-insulating flame-explosion-resistant impact electric furnace flue gas pipeline, which comprises a pipe body, wherein a heat-insulating mechanism is arranged on the inner wall of the pipe body, a protection mechanism is embedded in the inner side of the heat-insulating mechanism, flange baffles are welded at two ends of the pipe body, and a looper flange is arranged on the flange baffles.

Description

Heat-insulating flame-explosion-resistant impact electric furnace flue gas pipeline

Technical Field

The utility model relates to the technical field of electric furnace steelmaking flue gas pipelines, in particular to a heat-insulating flame-explosion-resistant impact electric furnace flue gas pipeline.

Background

The flue gas pipeline is a tubular device for discharging waste gas and smoke, the residential flue is a vertical pipeline product for discharging kitchen flue gas or toilet waste gas, also called an exhaust duct, a ventilating duct and a residential exhaust duct, and the flue gas pipeline of the electric furnace is a pipeline applied to a steel plant for discharging mediums such as CO2, CO, O2, N2, dust, scrap iron and the like, the temperature of the mediums is very high, generally 500-800 ℃, the instantaneous high temperature can reach about 1000 ℃, the duration is about 10 minutes, the flow rate of the mediums is 20m/s, the mediums are flushed, the inside of the flue gas pipeline of the electric furnace has a burning explosion phenomenon in the actual use process, and the explosion impacts the pipeline, so that the pipeline is easy to vibrate and deform.

At present, the existing electric furnace flue gas pipeline equipment adopts 310S materials, the materials are high in price, though the materials are high-temperature resistant, the materials are used in a high-temperature state for a long time, the allowable stress of the materials is reduced to 20% of the original allowable stress, even lower, when the pipeline runs, the internal flushing is serious, the gas explosion phenomenon frequently occurs, the impact on the pipeline is great, the local deformation of the pipeline is serious, the pipeline is used at a high temperature for a long time, the 310S material pipeline can generate creep risk, the higher the temperature is, the more obvious the creep is, the crystal-extending creep rupture risk can occur under the action of the pipeline stress, so that the pipeline is cracked, the gas leaks, or explosion accidents are caused.

Disclosure of Invention

Aiming at the defects, the utility model provides the heat-insulating flame-explosion-resistant impact electric furnace flue gas pipeline, which can realize the advantages of preventing pipeline deformation, reducing production cost, blocking flue gas temperature, preventing the outer wall from being too high in temperature and facilitating waste heat recovery and utilization.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a thermal-insulated anti-explosion electric stove flue gas pipeline that fires, includes the body, the inner wall of body is equipped with thermal-insulated mechanism, just thermal-insulated inboard embedding of mechanism has protection machanism, the both ends welding of body has the flange to keep off, the flange keeps off and is equipped with the looper flange, just the inside activity of looper flange has cup jointed the body, the surface of body is provided with heat conduction mechanism.

Further, the multiple groups of pipe bodies form a plurality of sections of sequentially connected pipelines, then the flue gas is guided to be discharged, the adjacent pipe bodies are fixedly connected through a fixing mechanism, and a flange pad is arranged at the joint of the two looper flanges.

Further, the heat conduction mechanism comprises a tank body, a diversion trench is formed in the tank body, a water inlet is formed in one side of the outer wall of the tank body, and a water outlet is formed in the other side of the outer wall of the tank body.

Further, the fixing mechanism comprises a fixing bolt, a fixing nut is connected to the fixing bolt in a threaded mode, and the two movable sleeve flanges are connected to each other through penetrating the fixing bolt internally, and the fixing nut is used at the other end to achieve fixed connection.

Furthermore, the heat insulation mechanism is fixed by welding 304 stainless steel anchoring pieces on the inner wall of the pipe body and pasting the heat insulation mechanism.

Furthermore, the protection mechanism is formed by pouring the liquid protection mechanism through using a fixed ramming mould in the pipe body, so that the protection mechanism is integrally rammed and solidified at one time.

Further, the inside of guiding gutter is filled with fluid.

Further, the pipe body is made of a common carbon steel material, the heat insulation mechanism is made of a nanofiber heat insulation material, and the protection mechanism is made of a hard refractory material.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

according to the utility model, the heat insulation mechanism and the protection mechanism are arranged, the nanofiber heat insulation material and the hard refractory material are adopted, the temperature of the flue gas is effectively blocked, the temperature of the outer wall of the pipeline is below 150 ℃, the pressure resistance of the hard refractory material is high, the impact caused by scouring of flue gas impurities and explosion of the flue gas in the pipeline is effectively solved, the heat conduction mechanism can be used for heat exchange, the waste heat is utilized, the resources are saved, the equipment is more conveniently cooled, the creep risk of the pipeline is avoided, the pipeline is prevented from being too high, the cracking of the pipeline is further prevented, the occurrence of gas leakage or explosion accidents is avoided, and the safety of the production environment is ensured;

according to the utility model, the traditional 310S material is changed into a common carbon steel structure by arranging the pipe body, so that the cost is greatly saved, the equipment can occupy the market better on the premise of ensuring the quality of the equipment, and the marketing is facilitated.

The utility model will now be described in detail with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall structure of the present utility model;

FIG. 3 is a schematic view of a partial structure of the present utility model;

FIG. 4 is a schematic cross-sectional view of a heat conducting mechanism according to the present utility model;

fig. 5 is a schematic structural view of a fixing mechanism according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a tube body; 2. a heat conduction mechanism; 201. a tank body; 202. a diversion trench; 203. a water inlet; 204. a water outlet; 3. a fixing mechanism; 301. a fixing bolt; 302. a fixing nut; 4. a flange baffle; 5. a looper flange; 6. a heat insulation mechanism; 7. a protection mechanism.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 5, the utility model provides a heat-insulating and explosion-resistant flue gas pipeline of an electric furnace, which comprises a pipe body 1, wherein a heat-insulating mechanism 6 is arranged on the inner wall of the pipe body 1, a protection mechanism 7 is embedded in the inner side of the heat-insulating mechanism 6, flange baffles 4 are welded at two ends of the pipe body 1, a loop flange 5 is arranged on the flange baffles 4, the pipe body 1 is movably sleeved in the loop flange 5, a heat-conducting mechanism 2 is arranged on the outer surface of the pipe body 1, the loop flange 5 can conveniently move on the pipe body 1 through the arrangement of the flange baffles 4 and the loop flange 5, the loop flange 5 is not fixed and can rotate, and centering bolt holes are easy to install, so that the pipe body 1 is easy to install.

As shown in fig. 1 to 2, the multiple groups of pipe bodies 1 form multiple sections of sequentially connected pipelines to guide the flue gas to be discharged, the adjacent pipe bodies 1 are fixedly connected through the fixing mechanism 3, the flange pads are arranged at the connecting positions of the two looper flanges 5, and the equipment is conveniently assembled and connected through the fixing mechanism 3, so that the flue gas is conveniently discharged.

As shown in fig. 4, the heat conducting mechanism 2 includes a tank 201, a diversion trench 202 is formed in the tank 201, a water inlet 203 is formed on one side of the outer wall of the tank 201, a water outlet 204 is formed on the other side of the outer wall of the tank, the heat conducting mechanism 2 is arranged on the periphery of the tank 1 conveniently, the heat conducting mechanism 2 is additionally arranged on the periphery of the tank 1 conveniently, the temperature of the outer wall is guided, and then fluid is utilized, so that heat conduction is facilitated, heat dissipation is facilitated, and waste heat is recycled conveniently.

As shown in fig. 5, the fixing mechanism 3 comprises a fixing bolt 301, a fixing nut 302 is screwed on the fixing bolt 301, two connected looper flanges 5 penetrate through the fixing bolt 301 internally, and the fixing nut 302 is used at the other end to realize fixed connection, so that the installation connection is facilitated by arranging the fixing bolt 301 and the fixing nut 302.

As shown in fig. 1 to 5, the heat insulation mechanism 6 is welded 304 stainless steel anchoring parts on the inner wall of the pipe body 1, the heat insulation mechanism 6 is adhered to fix the heat insulation mechanism, the protection mechanism 7 is fixedly rammed by using a fixed ramming mold inside the pipe body 1, the protection mechanism 7 is integrally rammed and solidified at one time by pouring the liquid protection mechanism 7, and the fixed ramming mold is arranged to facilitate solidification and then drying of the liquid protection mechanism 7 after the liquid protection mechanism 7 is placed still, so that the compression strength of a refractory material is more than or equal to 180MPa, and normal operation of equipment is ensured.

As shown in fig. 1 to 5, the fluid is filled in the diversion trench 202, the pipe body 1 is made of a common carbon steel material, the heat insulation mechanism 6 is made of a nanofiber heat insulation material, the protection mechanism 7 is made of a hard refractory material, and the temperature of the flue gas is effectively blocked by arranging the heat insulation mechanism 6, so that the temperature of the outer wall of the pipeline is below 150 ℃.

The working principle of the utility model is as follows:

during operation, after the pipe body 1 is processed and produced, the stainless steel anchoring piece is welded 304 on the inner wall of the pipe body 1 by staff, the heat insulation mechanism 6 is pasted to fix the pipe body 1, the fixed installation of the heat insulation mechanism 6 is realized, then the fixed ramming mould is used in the pipe body 1, the liquid protection mechanism 7 is poured, the protection mechanism 7 is integrally rammed and solidified and molded at one time, the high pressure resistance in the equipment is realized, the impact caused by flushing of smoke impurities and explosion of smoke in the pipe is effectively solved, the normal operation of the equipment is avoided, the heat conduction mechanism 2 is sheathed outside the pipe body 1, then the pipe body 1 at two ends of the heat conduction mechanism 2 is sheathed with the looper flange 5, then the flange 4 is welded at two ends of the pipe body 1, the looper flange 5 is conveniently moved, then the installation is carried out, the two looper flanges 5 are butted with each other as required, the guide emission of smoke is realized, the water inlet pipe is connected on the water inlet 203, the water outlet 204 is connected, the fluid reaches the inside the tank body 201, the heat of the pipe body is guided and utilized, the heat of the pipe body 1 is also used for realizing the utilization of waste heat, the normal operation of the pipe 1 is prevented, and the normal operation of the pipe is prevented from being produced.

The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.

Claims (7)

1. The utility model provides a thermal-insulated anti-explosion electric stove flue gas pipeline that fires, its characterized in that, including body (1), the inner wall of body (1) is equipped with thermal-insulated mechanism (6), just the inboard embedding of thermal-insulated mechanism (6) has protection machanism (7), flange fender (4) have been welded at the both ends of body (1), be equipped with loop flange (5) on flange fender (4), just the inside activity of loop flange (5) has cup jointed body (1), the surface of body (1) is provided with heat conduction mechanism (2).

2. The heat-insulating anti-explosion impact electric furnace flue gas pipeline according to claim 1, wherein a plurality of groups of pipe bodies (1) form a plurality of sections of pipelines which are sequentially connected, and then the flue gas is guided to be discharged, the adjacent pipe bodies (1) are fixedly connected through a fixing mechanism (3), and a flange pad is arranged at the joint of the two looper flanges (5).

3. The heat-insulating and explosion-resistant electric furnace flue gas pipeline according to claim 1, wherein the heat conducting mechanism (2) comprises a tank body (201), a diversion trench (202) is formed in the tank body (201), a water inlet (203) is formed in one side of the outer wall of the tank body (201), and a water outlet (204) is formed in the other side of the outer wall of the tank body.

4. The heat-insulating and explosion-resistant electric furnace flue gas pipeline according to claim 2, wherein the fixing mechanism (3) comprises a fixing bolt (301), a fixing nut (302) is connected to the fixing bolt (301) in a threaded manner, and the two connected looper flanges (5) are fixedly connected by penetrating the fixing bolt (301) internally and using the fixing nut (302) at the other end.

5. A heat-insulating and explosion-resistant flue gas pipeline for an electric furnace according to claim 3, wherein the heat-insulating mechanism (6) is fixed by welding 304 stainless steel anchoring parts on the inner wall of the pipe body (1) and pasting the heat-insulating mechanism (6).

6. A heat insulating blast resistant fire smoke pipeline as claimed in claim 3, characterised in that the interior of the channel (202) is filled with a fluid.

7. A heat-insulating and explosion-resistant electric furnace flue gas duct according to claim 3, characterized in that the tube body (1) is made of a plain carbon steel material, the heat-insulating means (6) is made of a nano-fiber heat-insulating material, and the protection means (7) is a hard refractory material.

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