A power generation device utilizing waste heat

Abstract

The present application relates to the field of industrial waste heat recovery and discloses a power generation device utilizing waste heat, including a waste heat boiler for burning and utilizing industrial waste slag and a screw generator set connected to the waste heat boiler. The waste heat boiler includes a boiler shell and a circulating water pipe. The boiler shell includes a plurality of groups of intermediate shells spliced together; an end cover plate fixed to the outer wall of the intermediate shell group at the outermost end; the intermediate shell group includes a base plate, vertically arranged columns, and a shell plate inserted between the two columns. A crossbeam is fixed between the tops of the two columns in the length direction of the base plate, and a top cover plate is provided between the crossbeams on both sides. The circulating water pipe is installed on the top cover plate, and the circulating water pipe is located between the shell plates on both sides. The present application solves the technical problem in the prior art that waste heat boilers cannot be adjusted accordingly to cope with different smoke exhaust heights of smelting plants or the height positions of smelting equipment. It realizes that the inlet and outlet positions of the waste heat boiler can be assembled arbitrarily, thereby improving the scope of application of the waste heat boiler.

Description

Technical Field

[0001] The present application relates to the field of industrial waste heat recovery, and in particular to a power generation device utilizing waste heat. Background Art

[0002] The industrial waste heat generated in some smelting plants can also be used in the field of power generation. Among them, gold furnaces, heating furnaces, industrial kilns, fuel gasification devices, etc. all have a large amount of high-temperature flue gas discharged. Usually, the high-temperature flue gas is introduced into the waste heat boiler. The waste heat boiler can use the heat generated by the high-temperature flue gas to heat water to a certain temperature. The high-temperature water will flow into the screw generator set. The screw generator set uses high-temperature thermal energy as a power source, converts the thermal energy into power and drives the generator to generate electricity.

[0003] However, in the process of implementing relevant technical solutions, at least the following technical problems were found: the screw generator set is a device used in the subsequent steps after the waste heat boiler heats the waste slag and waste gas, and the waste heat boiler is directly connected to the waste slag and waste gas discharge port of the smelting plant. Therefore, the screw generator is often packaged and transported as a whole unit, and there is no need to adapt to the waste slag and waste gas interface of the factory's smelting equipment. The waste heat boiler needs to be adjusted accordingly to cope with different smoke outlet heights of smelting plants or the height positions of smelting equipment. However, at present, waste heat boilers are generally produced in a unified form by the factory and cannot efficiently adapt to the smelting equipment of the smelting plant. Summary of the Invention

[0004] This application solves the technical problem in the prior art that waste heat boilers cannot be adjusted accordingly to cope with different smoke exhaust heights of smelting plants or the height positions of smelting equipment by providing a power generation device that utilizes waste heat. It realizes that the inlet and outlet positions of the waste heat boiler can be assembled arbitrarily, thereby improving the applicability of the waste heat boiler.

[0005] The present application provides a power generation device utilizing waste heat, including a waste heat boiler for burning industrial waste slag and a screw generator set connected to the waste heat boiler, the waste heat boiler including a boiler shell and an internal circulating water pipe, the boiler shell including: a plurality of groups of intermediate shell groups spliced together; an end cover plate fixed to the outer wall of the intermediate shell group at the outermost end; wherein, the intermediate shell group includes a base plate, columns vertically arranged and inserted at the four corners of the base plate, and a shell plate inserted between two columns in the width direction of the base plate, the shell plates are provided with several pieces and laid along the height direction of the columns, a cross beam is fixed between the tops of the two columns in the length direction of the base plate, a top cover plate is provided between the cross beams on both sides, the circulating water pipe is installed at the bottom of the top cover plate, and the circulating water pipe is located between the shell plates on both sides; the columns in two adjacent groups of the intermediate shell groups are in conflict with each other and fixedly connected.

[0006] Furthermore, a side sealing plate is formed on the end surface of one end of the top cover plate, and the side sealing plate is vertically arranged. A lower groove is opened on the bottom surface of the side sealing plate, and the top edge of the topmost shell plate in the columns on both sides is inserted into the lower groove.

[0007] Furthermore, a vertical slot is provided on the side wall of the column, and the vertical slot is vertically opened and used for placing the shell plate.

[0008] Furthermore, two mutually parallel outer walls in the length direction of the cross beam are provided with embedding grooves, and soft rubber strips are embedded in the ends of the embedding grooves. The interior of the soft rubber strip is cavity-shaped, and a strip notch is provided on the outer wall of the soft rubber strip. The length direction of the strip notch is consistent with the length direction of the cross beam. A push plate is placed in the soft rubber strip, and the thickness of the push plate is greater than the thickness of the inner cavity of the soft rubber strip. A push rod is fixed between the push plates at the ends of the cross beams on both sides, and the push rod passes through the strip notch. The push rod is located outside the shell plate, and the soft rubber strip is located between the end face of the side sealing plate and the side wall of the cross beam.

[0009] Furthermore, both sides of the end surface of the base plate are provided with a snap-in groove, the snap-in groove is opened horizontally and the end opening is facing the column, and a snap-in short column is fixedly connected to the side wall of the bottom of the column, the snap-in short column is horizontally arranged, and the snap-in short column is interference fit with the snap-in groove.

[0010] Furthermore, sealing assemblies are provided at both ends of the base plate, and the sealing assemblies include a sealing plate that abuts against the bottom surface of the base plate and a sealing strip fixed to the upper surface of the sealing plate, and the sealing strip abuts against the outer wall of the shell plate at the bottom of the two side columns.

[0011] Furthermore, support foot bars are formed on both sides of the bottom surface of the base plate, the length direction of the support foot bars is consistent with the length direction of the base plate, the height of the bottom surface of the base plate is higher than the height of the bottom surface of the support foot bars, and the sealing plate is inserted between the support foot bars on both sides. Adapter plates are formed on both sides of the sealing plate, one end of the adapter plate is bolted to the inner wall of the support foot bar, and the other end is bolted to the inner wall of the column.

[0012] Furthermore, the adapter plate and the snap-in short column are connected via a connecting piece.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] Since multiple sets of intermediate shell groups are used to build the waste heat boiler, the height of the columns in the intermediate shell group at the end of the waste heat boiler can be changed according to the height of the discharge port of the waste gas and waste slag of the smelting equipment, so that the inlet and outlet positions of the waste heat boiler can be assembled arbitrarily, and the applicability of the waste heat boiler is improved. In addition, the intermediate shell group is constructed by a base plate, columns, shell plates, cross beams, and top cover plates. Therefore, the size of a certain component can be changed according to the environment of the construction site to quickly adapt to the construction of the site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the system structure of a power generation device utilizing waste heat in an embodiment of the present application;

[0016] Figure 2 This is a schematic diagram of the overall structure of the waste heat boiler in the embodiment of the present application;

[0017] Figure 3 Schematic diagram of the combination of each intermediate shell group in the embodiment of this application

[0018] Figure 4 This is an exploded schematic diagram of the intermediate shell group in the embodiment of the present application;

[0019] Figure 5 This is a partial structural diagram of the intermediate shell group in the embodiment of the present application;

[0020] Figure 6 for Figure 5 The enlarged schematic diagram of part A mainly illustrates the structure of the sealing component;

[0021] Figure 7 for Figure 5 A partial structural diagram of the top cover plate;

[0022] Figure 8 Schematic diagram of a partial cross-section of the soft rubber strip in the embodiment of the present application.

[0023] In the figure: 100, waste heat boiler; 200, screw generator set; 101, boiler shell; 102, circulating water pipe; 1, intermediate shell group; 11, base plate; 1101, support leg horizontal bar; 111, snap-in groove; 12, column; 121, vertical snap-in groove; 122, snap-in short column; 13, shell plate; 14, crossbeam; 141, embedded groove; 15, top cover plate; 151, side sealing plate; 1511, lower groove; 2, end cover plate; 3, soft rubber strip; 31, strip notch; 301, push plate; 302, push rod; 4, sealing assembly; 41, sealing plate; 411, adapter plate; 42, sealing strip. DETAILED DESCRIPTION

[0024] The embodiment of the present application discloses a power generation device utilizing waste heat. When a waste heat boiler 100 needs to be built and the discharge port position of the waste gas and waste slag of the smelting equipment needs to be addressed, the intermediate shell group 1 in the middle of the waste heat boiler 100 can be built first. Then, the height of the column 12 in the intermediate shell group 1 at the end of the waste heat boiler 100 can be changed according to the height of the discharge port position of the waste gas and waste slag of the smelting equipment. The column 12 in the intermediate shell group 1 in the middle of the waste heat boiler 100 can be adapted to be connected at a gradually gentle angle. Afterwards, the intermediate shell group 1 at the end of the waste heat boiler 100 can be sealed using the end cover plate 2, thereby achieving the arbitrary assembly of the inlet and outlet positions of the waste heat boiler 100 and improving the applicability of the waste heat boiler 100. In addition, the sealing component 4 and the soft rubber strip 3 respectively seal the bottom and top of the intermediate shell group 1, thereby improving the sealing performance of the intermediate shell group 1.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Reference Figure 1 and Figure 2 As shown, a power generation device utilizing waste heat includes a waste heat boiler 100 and a screw generator set 200. The feed port of the waste heat boiler 100 is connected to the discharge port of the waste slag and waste gas generated by the smelting equipment. The waste heat boiler 100 can use the heat generated by the high-temperature flue gas to heat water to a certain temperature. The high-temperature water will flow into the screw generator set 200, and the screw generator set 200 will be used to generate electricity.

[0027] Reference Figure 3 and Figure 4 As shown, the waste heat boiler 100 includes a boiler shell 101 and an internal circulating water pipe 102. The boiler shell 101 includes multiple groups of inter-shell groups 1 connected to each other and an end cover plate 2 fixed to the outer wall of the outermost inter-shell group 1. The inter-shell includes a base plate 11, columns 12, shell plates 13, crossbeams 14, and a top cover plate 15. The base plate 11 is a strip-shaped plate and is placed horizontally on the ground. There are four vertical columns 12, each located at the four corners of the base plate 11. The shell plates 13 are provided in a plurality of pieces, and the shell plates 13 are located between two columns 12 in the width direction of the base plate 11. There are two horizontal crossbeams 14, which are installed between the columns 12 at both ends of the base plate 11. The top cover plate 15 is fixedly mounted on the crossbeams 14, and the circulating water pipe 102 is installed at the bottom of the top cover plate 15.

[0028] Reference Figure 5-Figure 8As shown, the side edges on both sides of the length direction of the base plate 11 are integrally formed with support foot horizontal bars 1101, the length of the support foot horizontal bar 1101 is consistent with the length of the base plate 11, and the end face of the support foot horizontal bar 1101 is coplanar with the end face of the base plate 11, the height of the bottom face of the base plate 11 is higher than the height of the bottom face of the support foot horizontal bar 1101, and both sides of the end face of the base plate 11 are provided with snap-in grooves 111, which are opened on the end face of the support foot horizontal bar 1101, and the cross-section of the snap-in groove 111 is rectangular. A snap-in short column 122 is fixedly connected to the side wall at the bottom of the column 12. The snap-in short column 122 is horizontal and perpendicular to the column 12. The cross-section of the snap-in short column 122 is rectangular. The snap-in short column 122 is interference fit with the snap-in groove 111 on the base plate 11. When the column 12 needs to be connected to the base plate 11, the snap-in short column 122 can be inserted into the snap-in groove 111, so that the column 12 can be fixedly installed on the base plate 11.

[0029] Continue to refer to Figure 5 and Figure 6 As shown, sealing components 4 are provided at both ends of the base plate 11. The sealing components 4 include a sealing plate 41 and a sealing strip 42. The sealing plate 41 is a thin strip plate. The width of the sealing plate 41 is smaller than the spacing between the support cross bars 1101 on both sides of the base plate 11 and the spacing between the columns 12 on both sides. One end of the sealing plate 41 is inserted between the support cross bars 1101 on both sides of the base plate 11, and the other end is inserted between the columns 12 on both sides. Adapter plates 411 are formed on both sides of the sealing plate 41. The adapter plate 411 is perpendicular to the sealing plate 41, and one end of the adapter plate 411 is bolted to the inner wall of the support cross bar 1101. , the other end is bolted to the inner wall of the column 12. In addition, part of the adapter plate 411 is connected to the snap-in short column 122 by bolts. Therefore, the column 12, the snap-in short column 122 and the base plate 11 are all connected to the adapter plate 411 with connectors, thereby improving the stability of the sealing plate 41; the sealing strip 42 is fixedly mounted on the upper surface of the sealing plate 41, and the sealing strip 42 is in contact with the outer wall of the shell plate 13 at the bottom of the columns 12 on both sides. The sealing strip 42 can be used to seal the gap between the bottom shell plate 13 and the base plate 11, thereby improving the sealing performance of the intermediate shell group 1.

[0030] Continue to refer to Figure 7 and Figure 8As shown, a vertical slot 121 is provided on the side wall of one side of the column 12, one end of the vertical slot 121 is connected to the top surface of the column 12, and the other end is close to the bottom of the column 12, and the vertical slot 121 is located on the side of the column 12 close to the base plate 11, and the vertical slots 121 in the columns 12 on both sides in the width direction of the base plate 11 correspond to each other, and a plurality of shell plates 13 are provided between the two sides, and the plurality of shell plates 13 are inserted between the vertical slots 121 of the columns 12 on both sides, and the plurality of shell plates 13 are evenly laid along the height direction of the column 12. When the waste heat boiler 100 needs to be built and the discharge port position of the waste gas and waste slag of the smelting equipment needs to be addressed, the intermediate shell group 1 in the middle of the waste heat boiler 100 can be built first, and then the height of the column 12 in the intermediate shell group 1 at the end of the waste heat boiler 100 can be changed according to the height of the discharge port position of the waste gas and waste slag of the smelting equipment. The column 12 in the intermediate shell group 1 in the middle of the waste heat boiler 100 can be connected at a gradually gentle angle, thereby realizing the arbitrary assembly of the inlet and outlet positions of the waste heat boiler 100 and improving the applicability of the waste heat boiler 100.

[0031] Continue to refer to Figure 7 and Figure 8 As shown, a side sealing plate 151 is formed on the end surface of one end of the top cover plate 15. The side sealing plate 151 is vertically arranged, and a lower groove 1511 is opened on the bottom surface of the side sealing plate 151. The top edge of the shell plate 13 at the top of the columns 12 on both sides is inserted into the lower groove 1511. The side sealing plate 151 can be used to seal the shell plate 13 at the top between the columns 12, thereby further improving the sealing performance of the intermediate shell group 1. The two parallel outer walls of the crossbeam 14 in the length direction are provided with an embedding groove 141. The embedding groove 141 is a rectangular strip. The two ends of the embedding groove 141 are respectively close to the ends of the two ends of the crossbeam 14. The ends of the embedding groove 141 are located on the outside of the shell 13. The connecting line between the embedding grooves 141 of the crossbeams 14 on both sides is horizontal. The ends of the embedding groove 141 are embedded with a soft rubber strip 3. The soft rubber strip 3 and the embedding groove 141 have an interference fit. The interior of the soft rubber strip 3 is a cavity. The outer wall of the soft rubber strip 3 is opened. A strip slot 31 is provided, which is in the shape of a thin strip. The length direction of the strip slot 31 is consistent with the length direction of the cross beam 14. A push plate 301 is placed in the soft rubber strip 3. The thickness of the push plate 301 is greater than the thickness of the inner cavity of the soft rubber strip 3. A push rod 302 is fixed between the push plates 301 at the ends of the cross beams 14 on both sides. The push rod 302 passes through the strip slot 31. The push rod 302 is located outside the shell plate 13, and the soft rubber strip 3 is located between the end face of the side sealing plate 151 and the side wall of the cross beam 14.

[0032] After the top cover plate 15 is bolted to the crossbeam 14, the push rod 302 can be pushed toward the inner side of the shell plate 13. The push rod 302 will drive the push plate 301 to move in the soft rubber strip 3. Since the thickness of the push plate 301 is greater than the thickness of the inner cavity of the soft rubber strip 3, when the push plate 301 is pushed to the position of the side sealing plate 151, the soft rubber strip 3 will expand, and then the end of the side sealing plate 151 and the side wall of the crossbeam 14 can be sealed, thereby further improving the sealing performance of the intermediate shell group 1.

[0033] This application can explain its functional principles through the following operation methods:

[0034] When the waste heat boiler 100 needs to be built and the discharge port position of the waste gas and waste slag of the smelting equipment needs to be addressed, the intermediate shell group 1 in the middle of the waste heat boiler 100 can be built first, and then the height of the column 12 in the intermediate shell group 1 at the end of the waste heat boiler 100 can be changed according to the height of the discharge port position of the waste gas and waste slag of the smelting equipment, and the connection with the column 12 in the intermediate shell group 1 in the middle of the waste heat boiler 100 can be adapted according to a gradually gentle angle. After that, the intermediate shell group 1 at the end of the waste heat boiler 100 can be sealed with the end cover plate 2, thereby realizing the arbitrary assembly of the inlet and outlet positions of the waste heat boiler 100 and improving the applicability of the waste heat boiler 100.

[0035] When installing the waste heat boiler 100, each intermediate shell group 1 is first built. When building the intermediate shell group 1, the base plate 11 is first placed flat on the ground, and then the four columns 12 are respectively placed at the four corners of the base plate 11, and the short columns 122 are inserted into the slots 111 to fix the columns 12 on the base plate 11. Then, one end of the sealing plate 41 of the sealing assembly 4 is inserted between the support horizontal bars 1101 on both sides of the base plate 11 and bolted, and the other end is inserted between the columns 12 on both sides and bolted. Then, the sealing strip 42 is pressed against the outer wall of the shell plate 13 at the bottom of the columns 12 on both sides. Then, several shell plates 13 are inserted between the vertical slots 121 of the columns 12 on both sides, and several shell plates 13 are evenly laid along the height direction of the columns 12. Next, the end of the crossbeam 14 is bolted to the bottom surface of the column 12, and then the top cover plate 15 equipped with the circulating water pipe 102 is placed on the crossbeam 14, and the top edge of the shell plate 13 at the top of the columns 12 on both sides is inserted into the lower groove 1511 of the side sealing plate 151. The side sealing plate 151 can be used to seal the shell plate 13 at the top between the columns 12. Then, the push rod 302 is pushed toward the inner side of the shell plate 13. The push rod 302 will drive the push plate 301 to move in the soft rubber strip 3. Since the thickness of the push plate 301 is greater than the thickness of the inner cavity of the soft rubber strip 3, when the push plate 301 is pushed to the position of the side sealing plate 151, the soft rubber strip 3 will expand, and then the end of the side sealing plate 151 and the side wall of the crossbeam 14 can be sealed, further improving the sealing performance of the intermediate shell group 1.

[0036] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

[0037] The above is only a preferred specific implementation method of the embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A power generation device utilizing waste heat, comprising a waste heat boiler (100) for burning and utilizing industrial waste slag and a screw generator set (200) connected to the waste heat boiler (100), wherein the waste heat boiler (100) comprises a boiler shell (101) and an internal circulating water pipe (102), and is characterized in that: The boiler housing (101) comprises: Multiple groups of interlocking intermediate shells (1); An end cover plate (2) is fixedly connected to the outer wall of the outermost intermediate shell group (1); wherein, The intermediate shell group (1) comprises a base plate (11), columns (12) vertically arranged and plugged into the four corners of the base plate (11), and a shell plate (13) plugged into two columns (12) in the width direction of the base plate (11); the shell plate (13) is provided with a plurality of pieces and laid along the height direction of the columns (12); a crossbeam (14) is fixed between the tops of the two columns (12) in the length direction of the base plate (11); a top cover plate (15) is provided between the crossbeams (14) on both sides; the circulating water pipe (102) is installed at the bottom of the top cover plate (15), and the circulating water pipe (102) is located between the shell plates (13) on both sides; the columns (12) in two adjacent groups of the intermediate shell groups (1) are mutually in conflict and fixedly connected; A side sealing plate (151) is formed on the end surface of one end of the top cover plate (15), and the side sealing plate (151) is vertically arranged. A lower groove (1511) is formed on the bottom surface of the side sealing plate (151), and the top edges of the topmost shell plates (13) of the columns (12) on both sides are inserted into the lower groove (1511); The two mutually parallel outer walls of the cross beam (14) in the length direction are both provided with an embedding groove (141), and a soft rubber strip (3) is embedded at the end of the embedding groove (141), the interior of the soft rubber strip (3) is in the shape of a cavity, and a strip-shaped notch (31) is provided on the outer wall of the soft rubber strip (3), the length direction of the strip-shaped notch (31) is consistent with the length direction of the cross beam (14), a push plate (301) is placed in the soft rubber strip (3), the thickness of the push plate (301) is greater than the thickness of the inner cavity of the soft rubber strip (3), and a push rod (302) is fixed between the push plates (301) at the ends of the cross beam (14) on both sides, the push rod (302) passes through the strip-shaped notch (31), the push rod (302) is located outside the shell plate (13), and the soft rubber strip (3) is located between the end face of the side sealing plate (151) and the side wall of the cross beam (14).

2. The power generation device utilizing waste heat according to claim 1, characterized in that: A vertical slot (121) is provided on the side wall of the upright column (12), and the vertical slot (121) is vertically opened and used for receiving the shell plate (13).

3. The power generation device utilizing waste heat according to claim 1, characterized in that: Both sides of the end surface of the base plate (11) are provided with snap-in grooves (111), the snap-in grooves (111) are provided horizontally and the end openings face the pillars (12), and a snap-in short column (122) is fixedly connected to the side wall of the bottom of the pillar (12), the snap-in short column (122) is provided horizontally, and the snap-in short column (122) is interference-fitted with the snap-in grooves (111).

4. The power generation device utilizing waste heat according to claim 3, characterized in that: Sealing assemblies (4) are provided at both ends of the base plate (11), the sealing assembly (4) comprising a sealing plate (41) abutting against the bottom surface of the base plate (11) and a sealing strip (42) fixed to the upper surface of the sealing plate (41), the sealing strip (42) abutting against the outer wall of the shell plate (13) at the bottom of the two side columns (12).

5. The power generation device using waste heat according to claim 4, characterized in that: Both sides of the bottom surface of the base plate (11) are formed with support foot horizontal bars (1101), the length direction of the support foot horizontal bars (1101) is consistent with the length direction of the base plate (11), the height of the bottom surface of the base plate (11) is higher than the height of the bottom surface of the support foot horizontal bars (1101), the sealing plate (41) is inserted between the support foot horizontal bars (1101) on both sides, and the two sides of the sealing plate (41) are formed with adapter plates (411), one end of the adapter plate (411) is bolted to the inner wall of the support foot horizontal bar (1101), and the other end is bolted to the inner wall of the column (12).

6. The power generation device utilizing waste heat according to claim 5, characterized in that: The adapter plate (411) and the snap-in short column (122) are connected via a connecting piece.

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