Converter gas dry dedusting and cooling structure

Abstract

The utility model relates to the technical field of converter waste gas treatment, and discloses a converter gas dry dedusting and cooling structure. The converter gas dry dedusting and cooling structure comprises a connecting pipe, a heat pipe is installed in the connecting pipe in a penetrating mode, a fixing frame is fixedly installed in the connecting pipe, a transmission shaft is installed in the center of the fixing frame in a penetrating mode, and a transmission turbofan is fixedly installed at the lower end of the transmission shaft; a driving turbofan is fixedly installed above the transmission shaft, a connecting ring is fixedly installed on the outer edge of the driving turbofan, a connecting rod is fixedly installed below the connecting ring, and in the process that coal gas passes through the connecting pipe from bottom to top, the transmission shaft generates certain torque to rotate through the transmission turbofan and the driving turbofan; in this way, an initial torque can be conveniently applied to the transmission shaft, so that the motor drives the transmission shaft to rotate, the load of the motor during starting is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of converter waste gas treatment, in particular to a converter coal gas dry dust removal and cooling structure. Background Art

[0002] The converter generates converter gas during the steelmaking process. Its main components are CO, CO2, O2, N2 and Ar, as well as FeO, Fe2O3, CaO, SiO2 and other dust carried by the gas. The total dust content is 80-150g / Nm3, and it must be dusted before it can be used. 80-120Nm3 of converter gas with a CO concentration of 60% can be recovered from blowing one ton of steel, which is an important secondary energy source for steel plants.

[0003] The existing Chinese utility model patent with reference announcement number: CN203200289U discloses a gas cooling device for dry dust removal of converter gas, which includes a gas cooler cylinder, a gas inlet pipe and a venting pipe; the outlet end of the gas inlet pipe is inserted into the gas cooler cylinder, and a pre-cooling nozzle is arranged on the upper wall of the gas inlet pipe; the lower part of the gas cooler cylinder is a conical water storage tank, and the bottom of the conical water storage tank is connected to the maintenance sewage pipe through a valve; the top of the gas cooler cylinder is provided with a gas outlet, and the upper part of the gas cooler cylinder is connected to the maintenance sewage pipe through a valve; ... The valve is connected to the venting pipe; the inlet end of the overflow water seal U-shaped drain pipe is connected to the conical water storage tank at the bottom of the gas cooler cylinder; the characteristics are: the upper middle part of the gas cooler cylinder is sequentially provided with an upper layer nozzle, a middle layer nozzle and a lower layer nozzle from top to bottom, the upper layer nozzle, the middle layer nozzle and the lower layer nozzle are all connected to the external water supply pipe, and each layer of nozzles is provided with an independent valve that can adjust the nozzle water spraying amount; the gas inlet pipe is provided with an inlet gas temperature measuring device that can measure the inlet gas, and the gas outlet is provided with an outlet gas temperature measuring device for measuring the outlet gas. The utility model can save water resources.

[0004] The existing cooling structure generally absorbs the heat of coal gas through cooling water. During use, part of the cooling water will evaporate, resulting in less and less cooling water as it is used, and the heat exchange efficiency decreases accordingly. In addition, the existing cooling structure generally transfers the heat absorbed by the heat-conducting structure to the outside through the airflow generated by the rotation of the fan blades driven by the motor. The motor is under a large load when starting, resulting in a short service life of the motor. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a converter gas dry dust removal and cooling structure, which has the advantages of preventing the heat exchange efficiency from decreasing with use time and reducing the load when the motor starts, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dry dust removal and cooling structure for converter gas, comprising: a connecting pipe, a heat pipe is inserted and installed inside the connecting pipe, a fixing frame is fixedly installed inside the connecting pipe, a transmission shaft is inserted and installed at the center of the fixing frame, a transmission turbofan is fixedly installed at the lower end of the transmission shaft, a driving turbofan is fixedly installed above the transmission shaft, a connecting ring is fixedly installed at the outer edge of the driving turbofan, a connecting rod is fixedly installed below the connecting ring, a transmission ring is fixedly installed at the lower end of the connecting rod, an air supply turbofan is fixedly installed inside the transmission ring, a limiting bearing is fixedly installed on the inner side of the air supply turbofan, a connecting frame is inserted and installed at the upper end of the transmission shaft, an exhaust pipe is fixedly installed on the outer side of the connecting frame, a limiting frame is fixedly installed inside the exhaust pipe, a motor is fixedly installed inside the limiting frame, a connecting bearing is fixedly installed at the outer bottom end of the exhaust pipe, a movable pipe is inserted and installed outside the connecting bearing, and a limiting pipe is fixedly installed outside the connecting pipe; the fixing frame can limit the position of the transmission shaft.

[0009] As a preferred technical solution of the utility model, the heat pipe is vertically equidistantly installed in a ring shape on the outside of the connecting pipe with the center of the connecting pipe as a reference, and the transmission shaft and the fixing frame are rotatably connected; the heat pipe can conduct heat.

[0010] As a preferred technical solution of the utility model, the transmission turbofan and the driving turbofan are fixedly connected by a transmission shaft, the connecting ring, the transmission ring and the limiting tube are rotationally connected, the driving turbofan passes through the movable tube, and the driving turbofan and the movable tube are fixedly connected; the transmission turbofan can drive the transmission shaft to rotate when the gas passes through.

[0011] As the preferred technical solution of the utility model, the inner edge of the air supply turbofan is rotatably connected with the connecting pipe through a limit bearing, the air supply turbofan is fixedly connected with the connecting ring through a transmission ring and a connecting rod, and the connecting frame is rotatably connected with the transmission shaft; the air supply turbofan can generate a vertical upward airflow when rotating.

[0012] As a preferred technical solution of the utility model, the exhaust pipe is rotatably connected to the transmission shaft through a connecting frame, and the motor is fixed to the center of the exhaust pipe through a limiting frame; the exhaust pipe can facilitate the discharge of coal gas.

[0013] As a preferred technical solution of the utility model, the rotating shaft of the motor is fixedly connected between the transmission shafts by interlacing, and the connecting bearing is also fixed to the top end of the connecting pipe; the motor can drive the transmission shaft to rotate.

[0014] As the preferred technical solution of the utility model, the movable tube is rotatably connected with the connecting tube and the exhaust tube through a connecting bearing, a "cross" shaped protrusion structure is provided on the inner side of the bottom end of the limiting tube, and the end of the protrusion structure of the limiting tube is fixedly connected to the connecting tube; the limiting tube can limit the direction of air circulation.

[0015] Compared with the prior art, the utility model provides a converter gas dry dust removal and cooling structure, which has the following beneficial effects:

[0016] 1. The utility model arranges the heat pipe, and the heat pipe is vertically equidistantly installed in a ring shape on the outside of the connecting pipe with the center of the connecting pipe as the reference. One half of the heat pipe is located on the inside of the connecting pipe and the other half is located on the outside of the connecting pipe. When the gas passes through the connecting pipe, the inner end of the heat pipe is heated, and the liquid in the capillary tube inside the heat pipe evaporates rapidly. The vapor flows to the other end under a small pressure difference and releases heat, and recondenses into liquid. The liquid then flows back to the evaporation section along the porous material by the action of capillary force, and the cycle continues. Thus, the heat of the gas is transferred from the inner end of the heat pipe to the outer end, so that the heat is located on the outside of the connecting pipe. The vertical upward airflow generated by the air supply turbofan when it rotates takes away the heat at the outer end of the heat pipe, thereby reducing the temperature of the gas. This method can prevent the heat exchange efficiency from decreasing with the use time.

[0017] 2. The utility model sets a transmission shaft, and a transmission turbofan is fixedly installed on the lower end of the transmission shaft, and a driving turbofan is fixedly installed on the upper part of the transmission shaft. The driving turbofan is connected to the air supply turbofan through a connecting ring, a connecting rod, and a transmission ring. At the same time, the driving turbofan passes through the movable tube, and a fixed connection is formed between the driving turbofan and the movable tube. The movable tube is rotatably connected with the connecting tube and the exhaust tube through a connecting bearing. In the process of coal gas passing through the connecting tube from bottom to top, a certain torque is generated through the transmission turbofan and the driving turbofan to rotate the transmission shaft. This method can facilitate the application of an initial torque to the transmission shaft, so that the motor drives the transmission shaft to rotate, thereby reducing the load of the motor at startup, thereby improving the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the heat pipe installation structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the driving turbofan and the air supply turbofan of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the movable pipe of the utility model;

[0022] Among them: 1. connecting pipe; 11. heat pipe; 12. fixing frame; 13. transmission shaft; 14. transmission turbofan; 15. driving turbofan; 16. connecting ring; 17. connecting rod; 18. transmission ring; 19. air supply turbofan; 110. limiting bearing; 111. connecting frame; 2. exhaust duct; 21. limiting frame; 22. motor; 23. connecting bearing; 24. movable pipe; 25. limiting pipe. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1 - Figure 4 In this embodiment, a dry dust removal and cooling structure for converter gas includes: a connecting pipe 1, a heat pipe 11 is inserted into the connecting pipe 1, a fixing frame 12 is fixedly installed inside the connecting pipe 1, a transmission shaft 13 is inserted into the center of the fixing frame 12, a transmission turbofan 14 is fixedly installed at the lower end of the transmission shaft 13, a driving turbofan 15 is fixedly installed above the transmission shaft 13, a connecting ring 16 is fixedly installed on the outer edge of the driving turbofan 15, a connecting rod 17 is fixedly installed below the connecting ring 16, a transmission ring 18 is fixedly installed at the lower end of the connecting rod 17, an air supply turbofan 19 is fixedly installed inside the transmission ring 18, a limit bearing 110 is fixedly installed on the inner side of the air supply turbofan 19, and a connecting frame 111 is inserted into the upper end of the transmission shaft 13.

[0027] The heat pipe 11 is installed in a ring shape on the outside of the connecting pipe 1 at an equal distance in the vertical direction with the center of the connecting pipe 1 as a reference, and a transmission shaft 13 is rotatably connected to the fixing frame 12 .

[0028] The transmission turbofan 14 and the driving turbofan 15 are fixedly connected via the transmission shaft 13 , the connecting ring 16 , the transmission ring 18 and the limiting tube 25 are rotationally connected, the driving turbofan 15 passes through the movable tube 24 , and the driving turbofan 15 and the movable tube 24 are fixedly connected.

[0029] The inner edge of the air supply turbofan 19 is rotatably connected to the connecting pipe 1 via a limit bearing 110 , the air supply turbofan 19 is fixedly connected to the connecting ring 16 via a transmission ring 18 and a connecting rod 17 , and a connecting frame 111 is rotatably connected to the transmission shaft 13 .

[0030] Specifically, the connecting pipe 1 can limit the flow direction of the gas, the heat pipe 11 can conduct heat, the fixing frame 12 can limit the position of the transmission shaft 13, the transmission shaft 13 can drive the driving turbofan 15 to rotate, the transmission turbofan 14 can drive the driving turbofan 13 to rotate when the gas passes through, the driving turbofan 15 can facilitate the discharge of airflow, the connecting ring 16 can limit the position of the outer edge of the driving turbofan 15, the connecting rod 17 can make the connecting ring 16 and the transmission ring 18 form a fixed connection, so as to facilitate the driving turbofan 15 to drive the air supply turbofan 19 to rotate, the transmission ring 18 can limit the position of the outer edge of the air supply turbofan 19, and the air supply turbofan 19 can generate a vertical upward airflow when rotating, the limit bearing 110 can facilitate the rotation of the air supply turbofan 19, and the connecting frame 111 can limit the position between the transmission shaft 13 and the exhaust pipe 2.

[0031] An exhaust duct 2 is fixedly installed on the outer side of the connecting frame 111, a limiting frame 21 is fixedly installed inside the exhaust duct 2, a motor 22 is fixedly installed inside the limiting frame 21, a connecting bearing 23 is fixedly installed on the outer bottom end of the exhaust duct 2, a movable pipe 24 is inserted and installed on the outer side of the connecting bearing 23, and a limiting pipe 25 is fixedly installed on the outer side of the connecting pipe 1.

[0032] The exhaust duct 2 is rotationally connected with the transmission shaft 13 through the connecting frame 111, the motor 22 is fixed to the center of the exhaust duct 2 through the limiting frame 21, the rotating shaft of the motor 22 is fixedly connected with the transmission shaft 13 by insertion, the connecting bearing 23 is also fixed to the top of the connecting pipe 1, the movable pipe 24 is rotationally connected with the connecting pipe 1 and the exhaust duct 2 through the connecting bearing 23, and a "cross"-shaped protrusion structure is provided on the inner side of the bottom end of the limiting pipe 25, and the end of the protrusion structure of the limiting pipe 25 is fixedly connected to the connecting pipe 1.

[0033] Specifically, the exhaust pipe 2 can facilitate the discharge of gas, the limit frame 21 can limit the position of the motor 22, the motor 22 can drive the transmission shaft 13 to rotate, the connecting bearing 23 can facilitate the movable pipe 24 to rotate with the rotation of the driving turbofan 15, the movable pipe 24 can prevent the gas from overflowing, and the limit pipe 25 can limit the direction of air circulation.

[0034] When in use, the heat pipe 11 is vertically equidistantly installed in a ring shape on the outside of the connecting pipe 1 with the center of the connecting pipe 1 as the reference. One half of the heat pipe 11 is located on the inside of the connecting pipe 1 and the other half is located on the outside of the connecting pipe 1. When the coal gas passes through the connecting pipe 1, the inner end of the heat pipe 11 is heated, and the liquid in the capillary tube inside the heat pipe 11 evaporates rapidly. The vapor flows to the other end under a slight pressure difference and releases heat, and condenses into liquid again. The liquid then flows back to the evaporation section along the porous material by the action of capillary force, and the cycle continues. The heat of the coal gas is transferred from the inner end of the heat pipe 11 to the outer end, so that the heat is located on the outside of the connecting pipe 1. The vertical upward airflow generated by the rotation of the air supply turbofan 19 takes away the heat at the outer end of the heat pipe 11, thereby reducing the temperature of the coal gas. This method can avoid the heat exchange efficiency decreasing with use. The transmission shaft 13 descends in time, a transmission turbofan 14 is fixedly installed at the lower end of the transmission shaft 13, and a driving turbofan 15 is fixedly installed above the transmission shaft 13. The driving turbofan 15 is connected to the air supply turbofan 19 through a connecting ring 16, a connecting rod 17, and a transmission ring 18. At the same time, the driving turbofan 15 passes through the movable tube 24, and a fixed connection is formed between the driving turbofan 15 and the movable tube 24. The movable tube 24 is rotatably connected with the connecting tube 1 and the exhaust pipe 2 through a connecting bearing 23. In the process of the coal gas passing through the connecting tube 1 from bottom to top, a certain torque is generated through the transmission turbofan 14 and the driving turbofan 15 to rotate the transmission shaft 13. This method can facilitate the application of an initial torque to the transmission shaft 13, so that the motor 22 drives the transmission shaft 13 to rotate, thereby reducing the load of the motor 22 at startup, thereby improving the service life of the motor 22.

[0035] 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 dry dust removal and cooling structure for converter gas, characterized in that: include: A connecting tube (1), a heat pipe (11) is inserted and installed inside the connecting tube (1), a fixing frame (12) is fixedly installed inside the connecting tube (1), a transmission shaft (13) is inserted and installed at the center of the fixing frame (12), a transmission turbofan (14) is fixedly installed at the lower end of the transmission shaft (13), a driving turbofan (15) is fixedly installed above the transmission shaft (13), a connecting ring (16) is fixedly installed on the outer edge of the driving turbofan (15), a connecting rod (17) is fixedly installed below the connecting ring (16), a transmission ring (18) is fixedly installed at the lower end of the connecting rod (17), and the inner edge of the transmission ring (18) is fixedly installed at the lower end of the connecting rod (17). An air supply turbofan (19) is fixedly installed on the inner side of the air supply turbofan (19), a limit bearing (110) is fixedly installed on the inner side of the air supply turbofan (19), a connecting frame (111) is inserted and installed on the upper end of the transmission shaft (13), an exhaust pipe (2) is fixedly installed on the outer side of the connecting frame (111), a limit frame (21) is fixedly installed on the inner side of the exhaust pipe (2), a motor (22) is fixedly installed on the inner side of the limit frame (21), a connecting bearing (23) is fixedly installed on the outer bottom end of the exhaust pipe (2), a movable pipe (24) is inserted and installed on the outer side of the connecting bearing (23), and a limit pipe (25) is fixedly installed on the outer side of the connecting pipe (1).

2. A converter gas dry dust removal and cooling structure according to claim 1, characterized in that: The heat pipes (11) are installed in a ring shape on the outside of the connecting pipe (1) at equal vertical distances with the center of the connecting pipe (1) as a reference, and the transmission shaft (13) is rotatably connected to the fixing frame (12).

3. The dry dust removal and cooling structure for converter gas according to claim 1 is characterized in that: The transmission turbofan (14) and the driving turbofan (15) are fixedly connected via a transmission shaft (13); the connecting ring (16), the transmission ring (18) and the limiting tube (25) are rotationally connected; the driving turbofan (15) passes through the movable tube (24), and the driving turbofan (15) and the movable tube (24) are fixedly connected.

4. The dry dust removal and cooling structure for converter gas according to claim 1 is characterized in that: The inner edge of the air supply turbofan (19) is rotatably connected to the connecting pipe (1) via a limit bearing (110); the air supply turbofan (19) is fixedly connected to the connecting ring (16) via a transmission ring (18), a connecting rod (17), and a connecting ring (16); and the connecting frame (111) is rotatably connected to the transmission shaft (13).

5. The dry dust removal and cooling structure for converter gas according to claim 1 is characterized in that: The exhaust pipe (2) is rotatably connected to the transmission shaft (13) via a connecting frame (111), and the motor (22) is fixed to the center of the exhaust pipe (2) via a limiting frame (21).

6. The dry dust removal and cooling structure for converter gas according to claim 1 is characterized in that: The rotating shaft of the motor (22) is fixedly connected to the transmission shaft (13) by inserting the shaft, and the connecting bearing (23) is also fixed to the top end of the connecting pipe (1).

7. The dry dust removal and cooling structure for converter gas according to claim 2 is characterized in that: The movable tube (24) is rotatably connected to the connecting tube (1) and the exhaust tube (2) via a connecting bearing (23); a protruding structure in the shape of a cross is provided on the inner side of the bottom end of the limiting tube (25); and the end of the protruding structure of the limiting tube (25) is fixedly connected to the connecting tube (1).

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