High-rotating-speed steam-electricity double-dragging unit for AOD furnace waste heat utilization

Abstract

The high-rotating-speed steam-electric double-dragging unit for AOD furnace waste heat utilization comprises a main body, a base, a connecting structure, a linkage assembly and a fixing assembly, the left side and the right side of the base are fixedly connected with positioning plates respectively, the sides, close to each other, of the front sides of the two positioning plates are rotationally connected with a main screw rod, and the main screw rod is connected with a screw rod. The surfaces of the two ends of the main screw are in threaded connection with main baffles respectively, the front sides and the rear sides of the two main baffles are rotationally connected with auxiliary baffles through rotating shafts respectively, open grooves are formed in the left sides of the two auxiliary baffles on the left side respectively, and connecting structures are arranged in the open grooves. The problem that when an existing steam turbine reuses waste heat of the AOD furnace, due to the fact that a high-temperature and high-pressure environment can be generated in the running process of the steam turbine, if the steam turbine is not shielded and protected, the workers are prone to being scalded and burnt when making contact with the areas is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat utilization of AOD furnaces, and particularly relates to a high-speed steam-electric dual-drive unit for waste heat utilization of AOD furnaces. Background Art

[0002] An AOD furnace, fully known as an argon-oxygen refining equipment, blows a mixed gas of oxygen (O2), argon (Ar), or nitrogen (N2) into the furnace to decarbonize molten steel. At the same time, reducing agents, desulfurizing agents, ferroalloys, or coolants are added to adjust the composition and temperature of the molten steel. Finally, qualified stainless steel molten steel is smelted for use by a continuous casting machine. During the smelting process of the AOD furnace, a large amount of high-temperature flue gas is generated. These flue gases contain rich waste heat resources and have characteristics such as high temperature (up to about 1450 °C), large fluctuations in flue gas temperature, and high dust content. To ensure the full utilization of waste heat, a high-speed steam-electric dual-drive unit is usually used for reuse. The core of its working principle is to convert the waste heat generated in the industrial process into steam through a waste heat boiler. A steam turbine is a frequently used device. It can introduce the high-temperature flue gas generated by the AOD furnace into the waste heat boiler through a waste heat recovery system for heat exchange to generate steam, and then drive the steam turbine to do work.

[0003] The problems existing in the prior art are as follows: When the steam turbine reuses the waste heat of the AOD furnace, since the steam turbine generates a high-temperature and high-pressure environment during operation, if the steam turbine is not shielded and protected, workers are prone to accidents such as scalding and burning when contacting these areas. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a high-speed steam-electric dual-drive unit for waste heat utilization of AOD furnaces, which has the advantages of shielding and protecting the working steam turbine to prevent workers from accidentally touching high-temperature areas and causing scalding, and solves the problem that when the existing steam turbine reuses the waste heat of the AOD furnace, since the steam turbine generates a high-temperature and high-pressure environment during operation, if the steam turbine is not shielded and protected, workers are prone to accidents such as scalding and burning when contacting these areas.

[0005] The present utility model is realized as follows. A high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace includes a main body, a base, a connection structure, a linkage assembly, and a fixing assembly. The main body is arranged on the top of the base. Positioning plates are respectively and fixedly connected to the left and right sides of the base. A main screw rod is rotatably connected to the side of the two positioning plates close to each other on the front side. Threads with opposite directions are respectively provided on the surfaces of both ends of the main screw rod. A secondary rod is fixedly connected to the side of the two positioning plates close to each other on the rear side. Main baffles are respectively threadedly connected to the surfaces of both ends of the main screw rod. The rear sides of the two main baffles are respectively slidably connected to the surface of the secondary rod. Secondary baffles are respectively rotatably connected to the front and rear sides of the two main baffles through rotating shafts. Connection blocks are respectively fixedly connected to the left sides of the two secondary baffles on the right side. Connection grooves are respectively provided on the left sides of the two connection blocks. Grooves are respectively provided on the left sides of the two secondary baffles on the left side. Moving grooves are respectively provided on the sides of the two secondary baffles on the left side away from each other. The connection structure, including a linkage assembly and a fixing assembly, is respectively arranged inside the two grooves.

[0006] Preferably, the linkage assembly includes a linkage block. The linkage block is arranged on the side of the main baffle away from the main body. The outer surface of the linkage block is slidably connected to the inner wall of the moving groove. A pushing block is fixedly connected to the side of the linkage block away from the main body. A linkage rod is arranged on the side of the linkage block close to the groove. By setting the linkage block, when the pushing block is pushed to the left, it can drive the linkage block to slide leftward in the moving groove and thereby drive the linkage rod to move synchronously.

[0007] Preferably, the linkage rod is arranged inside the groove. One end of the linkage rod away from the main body is fixedly connected to the side of the linkage block close to the groove. Two linkage bent arms are sleeved on the outer surface of the linkage rod. By setting the linkage rod, the linkage rod can be driven by the linkage block to move leftward in the groove, and the two linkage bent arms can be respectively driven to rotate during the movement of the linkage rod.

[0008] Preferably, the two linkage bent arms are respectively rotatably connected to the front and rear sides of the inner wall of the groove through rotating shafts. Linkage grooves are respectively provided on the surfaces of the two linkage bent arms. The inner walls of the two linkage grooves are respectively in contact with the outer surface of the linkage rod. By setting the linkage bent arms, when the linkage rod moves, it can simultaneously squeeze the two linkage grooves to drive the two linkage bent arms to rotate relatively, and thereby drive the two fixing arms to move when the two linkage bent arms rotate.

[0009] Preferably, the fixing component includes two sliding bars, both of which are arranged on the inner wall of the slotted groove. The two sliding bars are respectively fixedly connected to the front and rear sides of the inner wall of the slotted groove. On the side where the two sliding bars are close to each other, there are two fixing arms. By setting the sliding bars, the two sliding bars can provide a vertical stroke, so that the two fixing arms can slide vertically on the two sliding bars.

[0010] Preferably, the front and rear sides of the two fixing arms are respectively slidably connected to the surfaces of the two sliding bars close to each other. On the side where the two fixing arms are close to each other, a fixing spring is fixedly connected. On the side where the two fixing arms are far from each other, they respectively fit with the ends of the two linkage bent arms far from the linkage rod. The right ends of the two fixing arms are respectively fixedly connected with fixing blocks. By setting the fixing arms, when the two linkage bent arms rotate, they can respectively squeeze the surfaces of the two fixing arms, making them slide and approach on the sliding bars, and squeezing the fixing spring to compress. When the two fixing arms slide and approach, they respectively drive the two fixing blocks to move and approach.

[0011] Preferably, the two fixing blocks are respectively fixedly connected to the sides of the right ends of the two fixing arms far from each other. The sides of the two fixing blocks far from each other are respectively inserted into the inner wall of the connecting groove. By setting the fixing blocks, when the two fixing blocks move and approach, they can respectively disengage from the connecting groove to release the fixed limit on the connecting block, thereby releasing the fixed connection of the two side auxiliary baffles.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By setting the main body, the base, the connecting structure, the linkage component and the fixing component, the present utility model achieves the effect of solving the problem that when the existing steam turbine reuses the waste heat of the AOD furnace, due to the high-temperature and high-pressure environment generated during the operation of the steam turbine, if the steam turbine is not shielded and protected, it is easy for workers to have accidents such as scalds and burns when contacting these areas.

[0014] 2. By setting the base and the connecting structure, the present utility model can enable the linkage component and the fixing component to work together. The two side auxiliary baffles are fixedly connected through the connecting block, and then cooperate with the main baffle to shield and protect the steam turbine main body during operation, ensuring the separation of the high-temperature area, preventing workers from directly contacting high-temperature and high-pressure components during inspection, maintenance or operation, thereby avoiding accidents such as scalds and burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the main body and the base provided by the embodiment of the present utility model;

[0016] Figure 2It is an exploded structural schematic diagram of the main body, base and main baffle provided by the embodiment of the present utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the left-side auxiliary baffle and a structural schematic diagram of the connection structure provided by the embodiment of the present utility model;

[0018] Figure 4 It is a structural schematic diagram of the linkage assembly and the fixing assembly provided by the embodiment of the present utility model.

[0019] In the figure: 1. Main body; 2. Base; 201. Positioning plate; 202. Main screw; 203. Sub-rod; 3. Connection structure; 4. Linkage assembly; 5. Fixing assembly; 6. Main baffle; 601. Auxiliary baffle; 602. Moving groove; 7. Connection block; 701. Connection groove; 8. Groove; 9. Linkage block; 10. Pushing block; 11. Linkage rod; 12. Linkage bent arm; 13. Linkage groove; 14. Sliding bar; 15. Fixed arm; 16. Fixed spring; 17. Fixed block. Detailed implementation manners

[0020] In order to further understand the invention content, features and effects of the present utility model, the following embodiments are cited and described in detail in conjunction with the accompanying drawings as follows.

[0021] The structure of the present utility model will be described in detail below with reference to the accompanying drawings.

[0022] As Figures 1 to 4 shown, a high-speed steam-electric double-drive unit for AOD furnace waste heat utilization provided by the embodiment of the present utility model includes a main body 1, a base 2, a connection structure 3, a linkage assembly 4 and a fixing assembly 5. A main body 1 is arranged on the top of the base 2. Positioning plates 201 are respectively and fixedly connected to the left and right sides of the base 2. A main screw 202 is rotatably connected to the side of the two positioning plates 201 close to each other on the front side. Threads with opposite directions are respectively arranged on the surfaces of both ends of the main screw 202. A sub-rod 203 is fixedly connected to the side of the two positioning plates 201 close to each other on the rear side. Main baffles 6 are respectively threadedly connected to the surfaces of both ends of the main screw 202. The rear sides of the two main baffles 6 are respectively slidably connected to the surface of the sub-rod 203. Auxiliary baffles 601 are respectively rotatably connected to the front and rear sides of the two main baffles 6 through rotating shafts. Connection blocks 7 are respectively fixedly connected to the left sides of the two auxiliary baffles 601 on the right side. Connection grooves 701 are respectively arranged on the left sides of the two connection blocks 7. Grooves 8 are respectively arranged on the left sides of the two auxiliary baffles 601 on the left side. Moving grooves 602 are respectively arranged on the sides of the two auxiliary baffles 601 on the left side far from each other. Connection structures 3 are respectively arranged inside the two grooves 8. The connection structure 3 includes a linkage assembly 4 and a fixing assembly 5.

[0023] Refer to Figure 3 and Figure 4, the linkage component 4 includes a linkage block 9. The linkage block 9 is arranged on the side of the main baffle 6 away from the main body 1. The outer surface of the linkage block 9 is slidably connected to the inner wall of the moving groove 602. A push block 10 is fixedly connected to the side of the linkage block 9 away from the main body 1. A linkage rod 11 is arranged on the side of the linkage block 9 close to the slot 8.

[0024] With the above solution: by setting the linkage block 9, when the push block 10 is pushed to the left, it can drive the linkage block 9 to slide leftward in the moving groove 602, and thereby drive the linkage rod 11 to move synchronously.

[0025] Reference Figure 4 , the linkage rod 11 is arranged on the inner wall of the slot 8. One end of the linkage rod 11 away from the main body 1 is fixedly connected to the side of the linkage block 9 close to the slot 8. Two linkage bent arms 12 are sleeved on the outer surface of the linkage rod 11.

[0026] With the above solution: by setting the linkage rod 11, the linkage rod 11 can be driven by the linkage block 9 to move leftward in the slot 8, so that the linkage rod 11 can drive the rotation of the two linkage bent arms 12 respectively during the movement.

[0027] Reference Figure 4 , the two linkage bent arms 12 are respectively rotatably connected to the front and rear sides of the inner wall of the slot 8 through rotating shafts. Linkage grooves 13 are respectively formed on the surfaces of the two linkage bent arms 12. The inner walls of the two linkage grooves 13 are respectively fitted with the outer surface of the linkage rod 11.

[0028] With the above solution: by setting the linkage bent arms 12, when the linkage rod 11 moves, it can simultaneously squeeze the two linkage grooves 13 to drive the two linkage bent arms 12 to rotate relatively, so that the two fixed arms 15 are driven to move when the two linkage bent arms 12 rotate.

[0029] Reference Figure 4 , the fixing component 5 includes two sliding strips 14. The two sliding strips 14 are both arranged on the inner wall of the slot 8. The two sliding strips 14 are respectively fixedly connected to the front and rear sides of the inner wall of the slot 8. Two fixed arms 15 are arranged on the side where the two sliding strips 14 are close to each other.

[0030] With the above solution: by setting the sliding strips 14, the two sliding strips 14 can provide a vertical stroke, so that the two fixed arms 15 can slide vertically on the two sliding strips 14.

[0031] Reference Figure 4, the front and rear sides of the two fixed arms 15 are respectively slidably connected to the surfaces of the two sliding strips 14 on the side close to each other. A fixed spring 16 is fixedly connected to the side of the two fixed arms 15 close to each other. The sides of the two fixed arms 15 far from each other are respectively in contact with the ends of the two linkage bent arms 12 far from the linkage rod 11. Fixed blocks 17 are respectively fixedly connected to the right ends of the two fixed arms 15.

[0032] With the above solution: By setting the fixed arms 15, when the two linkage bent arms 12 rotate, they can respectively squeeze the surfaces of the two fixed arms 15, causing them to slide closer on the sliding strips 14 and compress the fixed spring 16. When the two fixed arms 15 slide closer, they respectively drive the two fixed blocks 17 to move closer.

[0033] Reference Figure 4 , the two fixed blocks 17 are respectively fixedly connected to the sides of the right ends of the two fixed arms 15 far from each other, and the sides of the two fixed blocks 17 far from each other are respectively inserted into the inner wall of the connection groove 701.

[0034] With the above solution: By setting the fixed blocks 17, when the two fixed blocks 17 move closer, they can respectively disengage from the connection groove 701 to release the fixed limit on the connection block 7, thereby releasing the fixed connection of the two side auxiliary baffles 601.

[0035] The working principle of the present utility model:

[0036] During use, rotate the main screw 202 to drive the two main baffles 6 to move closer, and at the same time slide closer on the surface of the auxiliary rod 203. The two main baffles 6 synchronously drive the auxiliary baffles 601 on both sides to move closer, so that the auxiliary baffle 601 on the right can drive the two connecting blocks 7 to move and be respectively inserted into the slots 8 of the left auxiliary baffle 601. When the two connecting blocks 7 move leftward, they can respectively squeeze the two groups of fixing blocks 17 to move closer, and as they move, the two fixing springs 16 can respectively push the two groups of fixing arms 15 to slide closer on the two sliding strips 14, and drive the two groups of fixing blocks 17 to move away and be inserted into the connecting slots 701 to fix and limit the two connecting blocks 7, thereby fixedly connecting the two auxiliary baffles 601 on both sides, and cooperating with the main baffle 6 to protect the main body 1. When removing the protection, the pushing block 10 can be pushed leftward to drive the linkage block 9 to slide leftward in the moving slot 602, and simultaneously drive the linkage rod 11 to move leftward in the slot 8. The linkage rod 11 moves and simultaneously squeezes the two linkage slots 13 to drive the two linkage bent arms 12 to rotate relatively. When the two linkage bent arms 12 rotate, the other ends respectively squeeze the surfaces of the two fixing arms 15. Thus, the two fixing arms 15 can slide closer on the two sliding strips 14 and drive the two fixing blocks 17 to move closer, so that the two fixing blocks 17 disengage from the connecting slot 701 and release the fixing and limiting of the connecting block 7. Repeat this method to push the other pushing block 10 to release the fixing and limiting of the other connecting block 7, thereby releasing the fixing and limiting of the two auxiliary baffles 601 on both sides, and the main screw 202 can be rotated in the reverse direction to drive the two main baffles 6 together with the auxiliary baffles 601 to move away and fold up the auxiliary baffles 601.

[0037] In summary: The high-speed steam-electric dual-drive unit for AOD furnace waste heat utilization solves the problem that when the steam turbine re-uses the waste heat of the AOD furnace, due to the high-temperature and high-pressure environment generated during the operation of the steam turbine, if the steam turbine is not shielded and protected, it is easy for workers to have accidents such as scalds and burns when contacting these areas through the cooperation of the main body 1, the base 2, the connection structure 3, the linkage assembly 4 and the fixing assembly 5.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace, comprising a main body (1), a base (2), a connection structure (3), a linkage assembly (4) and a fixing assembly (5), characterized in that: A main body (1) is provided on the top of the base (2). Positioning plates (201) are fixedly connected to the left and right sides of the base (2) respectively. A main screw rod (202) is rotatably connected to the side of the two positioning plates (201) close to each other on the front side. Threads with opposite directions are respectively provided on the surfaces of both ends of the main screw rod (202). A secondary rod (203) is fixedly connected to the side of the two positioning plates (201) close to each other on the rear side. Main baffles (6) are respectively threadedly connected to the surfaces of both ends of the main screw rod (202). The rear sides of the two main baffles (6) are respectively slidably connected to the surface of the secondary rod (203). Secondary baffles (601) are respectively rotatably connected to the front and rear sides of the two main baffles (6) through rotating shafts. Connecting blocks (7) are respectively fixedly connected to the left sides of the two secondary baffles (601) on the right side. Connecting grooves (701) are respectively provided on the left sides of the two connecting blocks (7). Grooves (8) are respectively provided on the left sides of the two secondary baffles (601) on the left side. Moving grooves (602) are respectively provided on the sides of the two secondary baffles (601) on the left side away from each other. Connecting structures (3) are respectively arranged inside the two grooves (8). The connecting structure (3) includes a linkage assembly (4) and a fixing assembly (5).

2. The high-speed steam-electric dual-drive unit for waste heat utilization of AOD furnace according to claim 1, characterized in that: The linkage assembly (4) includes a linkage block (9). The linkage block (9) is arranged on the side of the main baffle (6) away from the main body (1). The outer surface of the linkage block (9) is slidably connected to the inner wall of the moving groove (602). A pushing block (10) is fixedly connected to the side of the linkage block (9) away from the main body (1). A linkage rod (11) is arranged on the side of the linkage block (9) close to the groove (8).

3. The high-speed steam-electric dual-drive unit for AOD furnace waste heat utilization according to claim 2, characterized in that: The linkage rod (11) is arranged on the inner wall of the groove (8). One end of the linkage rod (11) away from the main body (1) is fixedly connected to the side of the linkage block (9) close to the groove (8). Two linkage bent arms (12) are sleeved on the outer surface of the linkage rod (11).

4. A high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace as claimed in claim 3, characterized in that: The two linkage bent arms (12) are respectively rotatably connected to the front and rear sides of the inner wall of the groove (8) through rotating shafts. Linkage grooves (13) are respectively provided on the surfaces of the two linkage bent arms (12). The inner walls of the two linkage grooves (13) are respectively in fit with the outer surface of the linkage rod (11).

5. A high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace according to claim 1, characterized in that: The fixing assembly (5) includes two sliding strips (14). The two sliding strips (14) are both arranged on the inner wall of the groove (8). The two sliding strips (14) are respectively fixedly connected to the front and rear sides of the inner wall of the groove (8). Two fixing arms (15) are arranged on the side of the two sliding strips (14) close to each other.

6. The high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace according to claim 5, characterized in that: The front and rear sides of the two fixing arms (15) are respectively slidably connected to the surfaces of the sides of the two sliding strips (14) close to each other. A fixing spring (16) is fixedly connected to the side of the two fixing arms (15) close to each other. The sides of the two fixing arms (15) away from each other are respectively in fit with the ends of the two linkage bent arms (12) away from the linkage rod (11). Fixing blocks (17) are respectively fixedly connected to the right ends of the two fixing arms (15).

7. A high-speed steam-electric dual-drive unit for waste heat utilization of an AOD furnace according to claim 6, characterized in that: The two fixing blocks (17) are respectively fixedly connected to the mutually remote sides of the right ends of the two fixing arms (15), and the mutually remote sides of the two fixing blocks (17) are respectively inserted into the inner walls of the connecting grooves (701).

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