Coal injection gun anti-blocking and cooling device applied to converter vaporization flue coal injection system

Abstract

The utility model discloses a coal injection gun anti-blocking and cooling device applied to a converter vaporization flue coal injection system, which comprises a main body and a heat dissipation mechanism, the main body comprises a coal injection gun, an air inlet pipe and a three-way valve, the air inlet pipe is perpendicular to the coal injection gun, the two ends of the air inlet pipe are respectively and fixedly communicated with the coal injection gun and the three-way valve, and the three-way valve is communicated with air pump equipment. The heat dissipation mechanism comprises a tank body, an annular batten, three groups of spiral pipes and a communicating pipe, the tank body sleeves the outer side of the coal injection gun, the annular batten sleeves the outer side of the coal injection gun, the spiral pipes sleeve the outer side of the coal injection gun and are all located between the tank body and the annular batten, and the two ends of the communicating pipe fixedly communicate with the tank body and the three-way valve correspondingly; the anti-blocking device has the beneficial effects that the heat dissipation mechanism is arranged to be matched with the main body, so that the anti-blocking device can be used for back flushing and blocking prevention of a coal injection system and heat dissipation of the coal injection gun, heat dissipation and anti-blocking function switching can be carried out only by rotating and operating the three-way valve, and the gun body performance and the service life of the coal injection gun can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a coal injection gun anti-blocking and cooling device applied to a coal injection system of a converter gasification flue. Background Art

[0002] The coal injection gun is one of the important equipment in the blast furnace coal injection system. It is usually made of heat-resistant seamless steel pipe and is used to inject coal powder into the blast furnace.

[0003] The main focus of current coal injection guns is the injection flow, speed and direction of coal powder, as well as the coordination with the burner. Most of them lack effective heat dissipation design. The coal injection gun is easily subjected to high working temperature for a long time, which can easily cause the performance and life of the gun to decrease. Therefore, it is necessary to provide a coal injection gun anti-blocking and cooling device for the converter gasification flue coal injection system to solve the above problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned problem of the coal injection gun anti-blocking and cooling device applied to the coal injection system of the converter gasification flue, the utility model is proposed.

[0006] Therefore, the utility model aims to provide a coal injection gun anti-blocking and cooling device for a converter gasification flue coal injection system, which is used to solve the problem that the coal injection gun is easily degraded in performance and life due to long-term high working temperature.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for preventing and cooling a coal injection gun in a coal injection system of a converter gasification flue, comprising:

[0008] The main body includes a coal injection gun, an air inlet pipe and a three-way valve. The air inlet pipe and the coal injection gun are arranged perpendicular to each other. The two ends of the air inlet pipe are respectively fixedly connected with the coal injection gun and the three-way valve. The three-way valve is connected with the air pump equipment.

[0009] The heat dissipation mechanism includes a tank body, annular slats, a spiral tube and a connecting pipe. The tank body is ring-shaped and sleeved on the outside of the coal injection gun. The annular slats are sleeved on the outside of the coal injection gun. Three groups of spiral tubes are sleeved on the outside of the coal injection gun and are all located between the tank body and the annular slats. One end of the three groups of spiral tubes close to the tank body is fixedly connected to the tank body, and the other end is fixedly connected to the annular slats. Multiple groups of air outlet holes are provided on the inner side of the three groups of spiral tubes. The two ends of the connecting pipe are respectively fixedly connected to the tank body and the three-way valve.

[0010] As an optimal solution of the utility model, a coal injection gun anti-blocking and cooling device applied to the coal injection system of the converter gasification flue is described, wherein: the tank body and the side of the annular slat facing away from the spiral tube are fixedly connected with a sleeve, and the two groups of the sleeves are both sleeved on the outside of the coal injection gun, and the two groups of the sleeves are equipped with a tightening assembly for tightening the sleeve and the coal injection gun.

[0011] As a preferred solution of the coal injection gun anti-blocking and cooling device applied to the converter gasification flue coal injection system of the utility model, the tightening assembly includes three groups of top screws, which are all threadedly connected to the sleeve and tighten the coal injection gun after passing through the sleeve.

[0012] As a preferred solution of the utility model for the coal injection gun anti-blocking and cooling device applied to the coal injection system of the converter gasification flue, the top wire is made of stainless steel, and three groups of the top wires are equidistantly arranged around the sleeve.

[0013] As an optimal solution of the coal injection gun anti-blocking and cooling device applied to the converter gasification flue coal injection system described in the utility model, the coal injection gun, the tank body, the annular slats and the three groups of spiral tubes are arranged with their axes overlapping, and the three groups of spiral tubes are distributed equidistantly in a ring shape.

[0014] As an optimal solution of the coal injection gun anti-blocking and cooling device applied to the coal injection system of the converter gasification flue described in the utility model, the tank body, annular slats, spiral pipes and connecting pipes are all made of stainless steel, and the inner diameters of the tank body and annular slats are consistent with the coal injection gun.

[0015] The beneficial effects of the utility model are as follows: by arranging the heat dissipation mechanism in cooperation with the main body, the device can not only prevent the backblowing of the coal injection system from being blocked, but also dissipate heat for the coal injection gun, and the heat dissipation and anti-blocking functions can be switched by simply rotating the three-way valve, which is simple to operate and is beneficial to ensuring the gun body performance and service life of the coal injection gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 The utility model is a structural schematic diagram of a coal injection gun anti-blocking and cooling device applied to a coal injection system of a converter gasification flue.

[0018] Figure 2The utility model is a structural schematic diagram of a coal injection gun anti-blocking and cooling device applied to a coal injection system of a converter gasification flue.

[0019] Figure 3 The utility model is a structural schematic diagram of a coal injection gun anti-blocking and cooling device applied to a coal injection system of a converter gasification flue.

[0020] Description of the drawings: 100, main body; 101, coal injection gun; 102, air inlet pipe; 103, three-way valve; 200, heat dissipation mechanism; 201, tank body; 202, annular slats; 203, spiral tube; 203a, air outlet; 204, connecting pipe; 205, sleeve; 206, top screw. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] Reference Figure 1-Figure 3 , which is an embodiment of the utility model, provides a coal injection gun blocking prevention and cooling device for a coal injection system of a converter gasification flue, which comprises:

[0026] The main body 100 includes a coal injection gun 101, an air inlet pipe 102 and a three-way valve 103. The air inlet pipe 102 and the coal injection gun 101 are arranged perpendicular to each other. Both ends of the air inlet pipe 102 are fixedly connected to the coal injection gun 101 and the three-way valve 103 respectively. The three-way valve 103 is connected to the air pump device;

[0027] The heat dissipation mechanism 200 includes a tank body 201, an annular slats 202, a spiral tube 203 and a connecting pipe 204. The tank body 201 is ring-shaped and sleeved on the outside of the coal injection gun 101. The annular slats 202 are sleeved on the outside of the coal injection gun 101. Three groups of spiral tubes 203 are sleeved on the outside of the coal injection gun 101 and are all located between the tank body 201 and the annular slats 202. One end of the three groups of spiral tubes 203 close to the tank body 201 is fixedly connected to the tank body 201, and the other end is fixedly connected to the annular slats 202. Multiple groups of air outlet holes 203a are provided on the inner side of the three groups of spiral tubes 203. Both ends of the connecting pipe 204 are fixedly connected to the tank body 201 and the three-way valve 103 respectively.

[0028] Among them, the tank body 201 and the annular strip 202 are fixedly connected with a sleeve 205 on one side facing away from the spiral tube 203. The two groups of sleeves 205 are both sleeved on the outside of the coal injection gun 101. The two groups of sleeves 205 are both equipped with a tightening assembly for tightening the sleeve 205 and the coal injection gun 101. The tightening assembly includes three groups of top screws 206. The three groups of top screws 206 are all threadedly connected to the sleeve 205 and pass through the sleeve 205 to tighten the coal injection gun 101. The sleeve 205 and the top screw 206 are used to fix the position of the heat dissipation mechanism 200, which is beneficial to improving the stability of the device.

[0029] In addition, the top screw 206 is made of stainless steel to prevent rust and thread slippage. The three groups of top screws 206 are equidistantly arranged around the sleeve 205. The axes of the coal injection gun 101, the tank body 201, the annular slats 202 and the three groups of spiral tubes 203 are arranged to coincide with each other. The three groups of spiral tubes 203 are distributed equidistantly in a ring shape to ensure the stability of the device.

[0030] It should be noted that the tank body 201, the annular slats 202, the spiral tube 203 and the connecting tube 204 are all made of stainless steel, which is corrosion-resistant and helps to increase the service life of the device. The inner diameters of the tank body 201 and the annular slats 202 match the coal injection gun 101, which helps to improve the stability of the device.

[0031] Working principle: Turn the three-way valve 103 to connect the air inlet pipe 102 with the pumping machine equipment, and pump back-blowing air into the coal injection gun 101 through the air inlet pipe 102 to clean the coal slag in the pipe to prevent blockage. When the coal injection gun 101 is cooled, turn the three-way valve 103 to connect the connecting pipe 204 with the pumping machine equipment, and the airflow enters the three groups of spiral tubes 203 after passing through the connecting pipe 204 and the sleeve 205, and finally is ejected from each group of air outlet holes 203a to dissipate heat for the coal injection gun 101 and prevent excessive temperature from affecting the performance and life of the gun body.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for preventing and cooling coal injection guns in a coal injection system of a converter gasification flue, characterized in that: include: The main body (100) comprises a coal spray gun (101), an air inlet pipe (102) and a three-way valve (103); the air inlet pipe (102) and the coal spray gun (101) are arranged perpendicular to each other; two ends of the air inlet pipe (102) are respectively fixedly connected to the coal spray gun (101) and the three-way valve (103); and the three-way valve (103) is connected to an air pump device; A heat dissipation mechanism (200) comprises a tank body (201), an annular plate (202), a spiral tube (203) and a connecting tube (204); the tank body (201) is ring-shaped and sleeved on the outside of a coal injection gun (101); the annular plate (202) is sleeved on the outside of the coal injection gun (101); three groups of spiral tubes (203) are sleeved on the outside of the coal injection gun (101) and are all located between the tank body (201) and the annular plate (202); one end of the three groups of spiral tubes (203) close to the tank body (201) is fixedly connected to the tank body (201), and the other end is fixedly connected to the annular plate (202); multiple groups of air outlet holes (203a) are provided on the inner sides of the three groups of spiral tubes (203); and the two ends of the connecting tube (204) are respectively fixedly connected to the tank body (201) and the three-way valve (103).

2. The device for preventing and cooling the coal injection gun of the coal injection system of the converter gasification flue according to claim 1 is characterized by: The tank body (201) and the annular strip (202) are both fixedly connected with a sleeve (205) on one side facing away from the spiral tube (203); the two groups of the sleeves (205) are both sleeved on the outside of the coal injection gun (101); and the two groups of the sleeves (205) are both equipped with a tightening assembly for tightening the sleeves (205) and the coal injection gun (101).

3. The device for preventing and cooling the coal injection gun used in the coal injection system of the converter gasification flue according to claim 2 is characterized in that: The tightening assembly comprises three groups of jack screws (206), and the three groups of jack screws (206) are all threadedly connected to the sleeve (205) and pass through the sleeve (205) to tighten the coal injection gun (101).

4. The device for preventing and cooling coal injection guns used in coal injection systems of converter gasification flue according to claim 3 is characterized in that: The top screws (206) are made of stainless steel, and three groups of the top screws (206) are arranged at equal distances around the sleeve (205).

5. The device for preventing and cooling coal injection guns used in coal injection systems of converter gasification flue according to claim 1 is characterized in that: The coal injection gun (101), the tank body (201), the annular plate (202) and the three groups of spiral tubes (203) are arranged with their axes overlapping, and the three groups of spiral tubes (203) are distributed in an annular shape with equal distances.

6. The device for preventing and cooling the coal injection gun used in the coal injection system of the converter gasification flue according to claim 1 or 5, characterized in that: The tank body (201), the annular strip (202), the spiral tube (203) and the connecting tube (204) are all made of stainless steel. The inner diameters of the tank body (201) and the annular strip (202) match the inner diameters of the coal injection gun (101).

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