A converter gas blower flue gas cooling device

Abstract

The utility model discloses a converter gas blower flue gas cooling device, comprising a base, a fan body, an air inlet pipe and a cooling assembly, wherein the fan body is mounted on the base, the air inlet pipe comprises a horizontal section and a transition section connected to the horizontal section, one end of the transition section opposite to the horizontal section is connected to the air inlet of the fan body, and the horizontal section of the air inlet pipe is provided with the cooling assembly. The utility model cools the flue gas by providing a cooling assembly in the horizontal section of the air inlet pipe, replacing the cooling method of providing a spray device in the high-pressure chamber of the fan for cooling, thereby reducing the resistance to the impeller, thereby achieving the purpose of reducing costs and increasing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy and steelmaking, in particular to a converter gas blower fume cooling device. Background Art

[0002] As one of the key equipment in the converter smelting system, the converter gas blower plays a vital role in the normal operation of the converter smelting and the recovery and dust removal of the converter gas generated by the smelting. However, when the converter gas blower shaft seal is changed from a comb-tooth water seal to a carbon ring + comb-tooth nitrogen combination seal, most manufacturers adopt the following method to cool the flue gas: Figure 1 As shown, a cooling method of an existing gas blower is to add a flushing device 2 and a spray device 1 to the front and rear disc sides of the impeller 3 in the high-pressure chamber 4 of the blower, and open them throughout the operation of the blower (Note: there is a flue gas temperature requirement at the outlet of the blower). This method can meet the requirement of lowering the flue gas temperature, but since the flushing device 2 and the spray device 1 will generate resistance to the impeller when working, it is found by tracking the operation of the blower that after adopting the above-mentioned flue gas cooling method, the operating current of the blower is much larger than the operating current when the above-mentioned cooling method is not adopted, thereby causing an increase in the production cost of the enterprise, which is undoubtedly in conflict with the enterprise's low-cost and high-efficiency policy. Utility Model Content

[0003] The purpose of the utility model is to provide a flue gas cooling method that reduces the resistance to the impeller to achieve cost reduction and efficiency improvement for a converter gas blower flue gas cooling device, so as to solve the problem raised in the above background technology that the flushing and spraying devices generate resistance to the impeller when working, thereby increasing the production cost of the enterprise.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A converter gas blower flue gas cooling device comprises a base, a fan body, an air inlet pipe and a cooling assembly, wherein the fan body is mounted on the base, the air inlet pipe comprises a horizontal section and a transition section connected to the horizontal section, one end of the transition section opposite to the horizontal section is connected to the air inlet of the fan body, and the cooling assembly is provided on the horizontal section of the air inlet pipe.

[0006] Preferably, the cooling assembly includes a water inlet pipe and a plurality of spiral nozzles, the water inlet pipe is arranged on the outer tube wall of the horizontal section, one end of the plurality of spiral nozzles is connected to the water inlet pipe, and the other end extends into the tube cavity of the horizontal section.

[0007] Preferably, the water inlet pipe is annularly sleeved on the outer pipe wall of the horizontal section, and the spiral nozzles are circumferentially distributed on the water inlet pipe along the axial direction of the water inlet pipe.

[0008] Preferably, the spiral nozzle is obliquely arranged on the pipe wall of the horizontal section, and the angle between the spiral nozzle and the axial direction of the horizontal section is 45° to 60°.

[0009] Preferably, the transition section is arc-shaped.

[0010] Preferably, the transition section is provided with an electric regulating valve connected to the spiral nozzle and used for controlling the spray volume of the spiral nozzle.

[0011] Preferably, a filtering device for filtering impurities in water is provided at the nozzle of the spiral nozzle.

[0012] Preferably, a temperature detector for detecting the temperature inside the tube is provided on the tube wall of the horizontal section close to one end of the transition section.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the flue gas is cooled by arranging a cooling component in the horizontal section of the air inlet pipe, and the spray amount of the spiral nozzle can be adjusted accordingly according to the start-up state of the fan body; when the fan body is running at high speed, the spray amount of the spiral nozzle is increased by an electric regulating valve to ensure the flue gas cooling effect; when the fan body is running at low speed, the spray amount of the spiral nozzle is reduced by an electric regulating valve, thereby replacing the existing cooling method of arranging a spray device in the high-pressure chamber of the fan for cooling, thereby reducing the resistance to the impeller, and further achieving the purpose of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a gas blower in the prior art;

[0015] Figure 2 It is a side view of the converter gas blower flue gas cooling device of the utility model;

[0016] Figure 3 It is a side view of the water inlet pipe and cooling assembly of the utility model;

[0017] Figure 4 for Figure 3 Section view of mid-section AA.

[0018] The markings in the figure correspond to the following:

[0019] 1- spray device; 2- flushing device; 3- impeller; 4- fan high pressure chamber; 5- base; 6- fan body; 7- air inlet pipe; 701- horizontal section; 702- transition section; 8- cooling assembly; 801- water inlet pipe; 802- spiral nozzle; 9- electric regulating valve; 10- temperature detector. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 2-3 A converter gas blower flue gas cooling device comprises a base 5, a fan body 6, an air inlet pipe 7 and a cooling assembly 8. The fan body 6 is mounted on the base 5, and the fan body 6 conveys flue gas by rotating an impeller disposed in its high-pressure chamber. The air inlet pipe 7 comprises a horizontal section 701 and a transition section 702 connected to the horizontal section 701. The horizontal section 701 and the transition section 702 are both pipes with hollow lumens, and the transition section 702 is arc-shaped. One end of the transition section 702 opposite to the horizontal section 701 is connected to the air inlet of the fan body 6. The horizontal section 701 of the air inlet pipe 7 is provided with the cooling assembly 8 for cooling the flue gas in the lumen of the horizontal section 701.

[0022] See also Figure 3-4 The cooling assembly 8 includes a water inlet pipe 801 and a plurality of spiral nozzles 802. The water inlet pipe 801 is arranged on the outer wall of the horizontal section 701. One end of the plurality of spiral nozzles 802 is connected to the water inlet pipe 801, and the other end extends into the tube cavity of the horizontal section 701. The mist formed by the spiral nozzles 802 spraying water cools the smoke in the tube cavity of the horizontal section 701.

[0023] In this embodiment, the water inlet pipe 801 is annularly sleeved on the outer tube wall of the horizontal section 701, and the spiral nozzles 802 are circumferentially distributed on the water inlet pipe 801 along the axial direction of the water inlet pipe 801, so that the flue gas cooling is more uniform. Two or more groups of water inlet pipes 801 can be arranged along the axial direction of the horizontal section 701 to improve the cooling effect. The spiral nozzles 802 are tiltedly arranged on the tube wall of the horizontal section 701, and the angle between the spiral nozzles 802 and the axial direction of the horizontal section 701 is 45° to 60°, so that the spray sprayed by the spiral nozzles 802 is more fully in contact with the flue gas. The structural arrangement of the water inlet pipe 801 and the spiral nozzles 802 is relatively simple, and both are arranged on the water inlet pipe 801 outside the fan body 6, which is convenient for early installation and later maintenance, and the maintenance cost is low.

[0024] Preferably, a plurality of legs for supporting the water inlet pipe 801 are provided on the outer tube wall of the horizontal section 701 .

[0025] See also Figure 3-4The transition section 702 is provided with an electric regulating valve 9 connected to the spiral nozzle 802 and used to control the spray amount of the spiral nozzle 802, and the electric regulating valve 9 is electrically connected to the fan body 6. The electric regulating valve 9 is interlocked with the running speed of the fan body 6, that is, the spray amount of the spiral nozzle 802 is automatically adjusted according to the running speed of the fan body 6, thereby realizing remote control of the flue gas cooling process and reducing the workload of the operators.

[0026] Preferably, a filtering device for filtering impurities in water is provided at the nozzle of the spiral nozzle 802 to prevent impurities from clogging the nozzle of the spiral nozzle 802 and causing a decrease in the flue gas cooling effect.

[0027] Preferably, a temperature detector 10 for detecting the temperature inside the tube is provided on the tube wall of the horizontal section 701 near one end of the transition section 702, so as to detect the temperature of the flue gas after cooling, thereby adjusting the spray amount of the nozzle according to the electric regulating valve 9. The temperature detector 10 can be a common temperature sensor on the market.

[0028] The working principle of the flue gas cooling device of the converter gas blower of the utility model is: when cooling the flue gas to lower its temperature, the spray amount of the spiral nozzle 802 is adjusted accordingly according to the starting state of the fan body 6; when the fan body 6 runs at a high speed, the spray amount of the spiral nozzle 802 is increased by the electric regulating valve 9 to ensure the flue gas cooling effect; when the fan body 6 runs at a low speed, the spray amount of the spiral nozzle 802 is reduced by the electric regulating valve 9, thereby replacing Figure 1 The prior art shown is a cooling method of a gas blower in which a spray device 1 is arranged in a high-pressure chamber 4 of the blower for cooling, thereby reducing the resistance to the impeller 3, thereby achieving the purpose of reducing costs and increasing efficiency.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A converter gas blower flue gas cooling device, characterized in that: The invention comprises a base (5), a fan body (6), an air inlet pipe (7) and a cooling assembly (8), wherein the fan body (6) is mounted on the base (5), the air inlet pipe (7) comprises a horizontal section (701) and a transition section (702) connected to the horizontal section (701), one end of the transition section (702) relative to the horizontal section (701) is connected to the air inlet of the fan body (6), and the horizontal section (701) of the air inlet pipe (7) is provided with the cooling assembly (8); the cooling assembly (8) comprises a water inlet pipe (801) and a plurality of spiral nozzles (802), the water inlet pipe (801) is provided on the outer tube wall of the horizontal section (701), one end of the plurality of spiral nozzles (802) is connected to the water inlet pipe (801), and the other end extends into the tube cavity of the horizontal section (701).

2. The converter gas blower flue gas cooling device according to claim 1, characterized in that: The water inlet pipe (801) is annularly sleeved on the outer pipe wall of the horizontal section (701), and the spiral nozzles (802) are circumferentially distributed on the water inlet pipe (801) along the axial direction of the water inlet pipe (801).

3. The converter gas blower flue gas cooling device according to claim 1 or 2, characterized in that: The spiral spray head (802) is obliquely arranged on the pipe wall of the horizontal section (701), and the angle between the spiral spray head (802) and the axial direction of the horizontal section (701) is 45° to 60°.

4. The converter gas blower flue gas cooling device according to claim 1, characterized in that: The transition section (702) is arc-shaped.

5. The converter gas blower flue gas cooling device according to claim 1 or 4, characterized in that: The transition section (702) is provided with an electric regulating valve (9) connected to the spiral spray head (802) and used to control the spray volume of the spiral spray head (802).

6. The converter gas blower flue gas cooling device according to claim 1, characterized in that: A filtering device for filtering impurities in water is provided at the nozzle of the spiral nozzle (802).

7. The converter gas blower flue gas cooling device according to claim 1, characterized in that: A temperature detector (10) for detecting the temperature inside the tube is arranged on the tube wall of the horizontal section (701) at one end close to the transition section (702).

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