CN211475891U - System for improving dryness of waste heat steam of converter - Google Patents
System for improving dryness of waste heat steam of converter Download PDFInfo
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- CN211475891U CN211475891U CN201922377019.9U CN201922377019U CN211475891U CN 211475891 U CN211475891 U CN 211475891U CN 201922377019 U CN201922377019 U CN 201922377019U CN 211475891 U CN211475891 U CN 211475891U
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Abstract
The utility model discloses a system for improve converter waste heat steam quality, including steam pocket (1), first governing valve (2) and vapour heat exchanger (3), the saturated steam outlet of steam pocket (1) is connected with the entry end of first governing valve (2) through first connecting line (11), and the exit end of first governing valve (2) passes through the heated medium entry linkage of second connecting line (12) and vapour heat exchanger (3), and first connecting line (11) are connected with the heat source entry of vapour heat exchanger (3) through third connecting line (13). The method for improving the dryness of the waste heat steam of the converter does not use an external heat source, does not increase the consumption of external energy, utilizes the self heat of the steam of the converter to heat the delivered steam, improves the dryness of the steam, reduces water hammer and water drainage of a steam pipeline, prolongs the service life of the pipeline, and saves water and energy.
Description
Technical Field
The utility model relates to a system for improve converter waste heat steam quality.
Background
Because the oxygen blowing during the converter smelting has the characteristics of interruption and fluctuation, the waste heat steam generated by the converter vaporization cooling system also has interruption and fluctuation. In order to recycle the steam, the system is provided with a steam heat accumulator. The steam output by the steam drum or the heat accumulator is wet saturated steam. Saturated steam carries water, so that pipeline water hammer is easily caused, the operation safety of the pipeline is influenced, and the service life is shortened. And more water is drained along the way, so that the water loss and the heat loss are increased.
SUMMERY OF THE UTILITY MODEL
In order to improve the dryness fraction of the waste heat steam that converter vaporization cooling system produced, the utility model provides an improve system of converter waste heat steam dryness fraction should improve the converter waste heat steam dryness fraction and do not utilize external heat source, do not increase outside energy consumption, utilize converter steam self heat, the heating steam of sending outward improves the steam dryness fraction, reduces steam pipeline water hammer and dredges water, improves the pipeline life-span, and water conservation is energy-conserving.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a system for improve converter waste heat steam quality, includes steam pocket, first governing valve and vapour heat exchanger, and the saturated steam outlet of steam pocket is connected with the entry end of first governing valve through first connecting line, and the exit end of first governing valve is connected with the heated medium entry of vapour heat exchanger through the second connecting line, and first connecting line is connected with the heat source entry of vapour heat exchanger through the third connecting line.
The system for improving the dryness of the converter waste heat steam further comprises a spherical heat accumulator, a first connecting pipeline is connected with the spherical heat accumulator through a first conveying pipeline and a second conveying pipeline, and the first conveying pipeline is connected with the second conveying pipeline in parallel.
The first connecting pipeline is provided with a first regulating valve, the joint of the first conveying pipeline and the first connecting pipeline is positioned between the first regulating valve and the first regulating valve, and the joint of the first connecting pipeline and the second conveying pipeline is also positioned between the first regulating valve and the second regulating valve.
The connection of the first transfer line to the first connecting line is located between the second regulating valve and the connection of the second transfer line to the first connecting line.
The first conveying pipeline is provided with a first one-way valve, the second conveying pipeline is provided with a second one-way valve, fluid in the first connecting pipeline can only enter the spherical heat accumulator through the first one-way valve, and fluid in the spherical heat accumulator can only enter the first connecting pipeline through the second one-way valve.
The first connecting pipeline is located above the spherical heat accumulator, the first conveying pipeline and the second conveying pipeline are both in an upright state, and the first conveying pipeline and the second conveying pipeline are both connected with the top of the spherical heat accumulator.
The first conveying pipeline penetrates through the top of the spherical heat accumulator, and the lower end of the first conveying pipeline is positioned at the lower part in the spherical heat accumulator.
And a fourth connecting pipeline is connected outside the heat source outlet of the steam-steam heat exchanger, and a third regulating valve and a drain valve are sequentially arranged on the fourth connecting pipeline.
The steam-steam heat exchanger is a plate heat exchanger or a shell-and-tube heat exchanger.
The first regulating valve is a pressure regulating valve, and the second regulating valve and the third regulating valve are both switch type valves.
The utility model has the advantages that:
1. external energy sources are not needed to be consumed, only a small amount of converter self-produced steam is needed to be consumed, and the dryness of the converter waste heat steam is improved;
2. the finally output converter steam is dry saturated steam or slightly superheated steam, which is beneficial to steam delivery, reduces water drainage along the way, saves water and energy.
3. The finally output converter steam is dry saturated steam or slightly superheated steam, so that the water hammer of a pipeline can be effectively reduced, and the service lives of steam pipelines, valve accessories and the like are prolonged.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a system for improving the dryness of the steam generated by the converter after heat.
1. A steam drum; 2. a first regulating valve; 3. a steam-steam heat exchanger; 4. a spherical heat accumulator; 5. a second regulating valve; 6. a third regulating valve; 7. a drain valve;
11. a first connecting line; 12. a second connecting line; 13. a third connecting line; 14. a fourth connecting line; 15. a fifth connecting line;
21. a first transfer line; 22. a second transfer line; 23. a first check valve; 24. a second one-way valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a system for improve converter waste heat steam quality, includes steam pocket 1, first governing valve 2 and vapour heat exchanger 3, and the saturated steam outlet of steam pocket 1 is connected with the entry end of first governing valve 2 through first connecting line 11, and the exit end of first governing valve 2 is connected with the heated medium entry of vapour heat exchanger 3 through second connecting line 12, and first connecting line 11 is connected with the heat source entry of vapour heat exchanger 3 through third connecting line 13, as shown in figure 1.
The third connecting pipeline 13 is connected in parallel with the first regulating valve 2, and the high-temperature heat source of the steam-steam heat exchanger 3 is high-pressure high-temperature steam in front of the first regulating valve 2. And a third connecting pipeline 13 is led from the front of the first regulating valve 2 to enter the steam-steam heat exchanger 3, the high-pressure high-temperature steam is heated to low-temperature low-pressure steam to become condensed water, the low-temperature low-pressure wet saturated steam behind the first regulating valve 2 is heated, liquid water in the wet saturated steam is heated and evaporated to become steam, and the wet saturated steam is dried to become saturated steam or slightly superheated steam.
In this embodiment, the system for improving the dryness of the converter waste heat steam further comprises a spherical heat accumulator 4, the first connecting pipeline 11 is connected with the spherical heat accumulator 4 through a first conveying pipeline 21 and a second conveying pipeline 22, and the first conveying pipeline 21 is connected with the second conveying pipeline 22 in parallel, as shown in fig. 1. The steam in the first connecting line 11 can be fed into the spherical heat accumulator 4 via a first feed line 21, and the steam in the spherical heat accumulator 4 can also be fed into the first connecting line 11 via a second feed line 22.
In the present exemplary embodiment, a second control valve 5 is provided on first connecting line 11, a connection a of first supply line 21 to first connecting line 11 is located between second control valve 5 and first control valve 2, and a connection B of second supply line 22 to first connecting line 11 is also located between second control valve 5 and first control valve 2. The connection a of the first conveying line 21 and the first connecting line 11 is located between the second regulating valve 5 and the connection B of the second conveying line 22 and the first connecting line 11, i.e. the second regulating valve 5, the connection a, the connection B and the first regulating valve 2 are arranged in sequence along the first connecting line 11. A valve may or may not be provided in the first connection line 11 between the connection a and the connection B.
In this embodiment, the first delivery line 21 is provided with a first check valve 23, the second delivery line 22 is provided with a second check valve 24, the fluid in the first connection line 11 can only enter the spherical heat accumulator 4 in one way through the first delivery line 21 and the first check valve 23, and the fluid in the spherical heat accumulator 4 can only enter the first connection line 11 in one way through the second delivery line 22 and the second check valve 24.
In the present embodiment, the first connecting line 11 is located above the spherical heat accumulator 4, the first connecting line 11 is in a horizontal state, the first transfer line 21 and the second transfer line 22 are both in an upright state, and the first transfer line 21 and the second transfer line 22 are both connected to the top of the spherical heat accumulator 4. Water for heat storage is provided in the spherical heat accumulator 4.
In the present embodiment, the upper end of the first transfer line 21 and the upper end of the second transfer line 22 are both connected to the first connection line 11, the first transfer line 21 passes through the top of the spherical heat accumulator 4, the lower end of the first transfer line 21 is located at the lower portion in the spherical heat accumulator 4, and the lower end of the first transfer line 21 is located below the water surface in the spherical heat accumulator 4, as shown in fig. 1.
In this embodiment, a fourth connecting line 14 is connected to the outside of the heat source outlet of the steam-steam heat exchanger 3, a third regulating valve 6 and a drain valve 7 are sequentially arranged on the fourth connecting line 14, and a fifth connecting line 15 is connected to the outside of the heated medium outlet of the steam-steam heat exchanger 3. The steam-steam heat exchanger 3 is a plate heat exchanger or a shell-and-tube heat exchanger. The high temperature side of the steam-steam heat exchanger 3 is phase change heat transfer. The first regulating valve 2 is a pressure regulating type valve, i.e. the first regulating valve 2 can regulate the steam pressure after passing through the first regulating valve 2. The second regulating valve 5 and the third regulating valve 6 are both switch type valves.
The working process of the system for improving the dryness of the waste heat steam of the converter is described below.
1. The steam pocket 1 is connected with the evaporation cooling flue through a plurality of descending pipes and ascending pipes, the converter starts to smelt, after the pressure in the steam pocket 1 of the waste heat boiler rises to a certain value, the second regulating valve 5 is opened, wet saturated steam is output by the steam pocket 1 and enters the first connecting pipeline 11, and the wet saturated steam generally carries a small amount of liquid moisture. The output of the wet saturated steam is divided into two paths, one path is sent to a first regulating valve 2 for regulating, reducing pressure and cooling; the other way is via a first transfer line 21 and a first non return valve 23 into the spherical regenerator 4 for storage.
2. When the converter stops smelting, the pressure in the steam drum 1 is reduced, the second regulating valve 5 is closed, and the steam output into the first connecting pipeline 11 is stopped. At the moment, the spherical heat accumulator 4 outputs steam into the first connecting pipeline 11 through the second conveying pipeline 22, and the steam is sent to the first regulating valve 2 to regulate pressure reduction and temperature reduction.
3. In the steam-steam heat exchanger 3, the high-pressure and high-temperature steam in the third connecting pipeline 13 heats the low-temperature and low-pressure wet saturated steam after the first regulating valve 2, liquid water in the wet saturated steam is heated and evaporated to become steam, and the wet saturated steam is dried to become saturated steam or slightly superheated steam. The high-pressure high-temperature steam in the third connecting pipeline 13 is changed into condensed water after heating the low-temperature low-pressure steam, and the condensed water is discharged and recovered through the drain valve 7.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.
Claims (10)
1. The system for improving the dryness of the waste heat steam of the converter is characterized by comprising a steam drum (1), a first regulating valve (2) and a steam-steam heat exchanger (3), wherein a saturated steam outlet of the steam drum (1) is connected with an inlet end of the first regulating valve (2) through a first connecting pipeline (11), an outlet end of the first regulating valve (2) is connected with a heated medium inlet of the steam-steam heat exchanger (3) through a second connecting pipeline (12), and the first connecting pipeline (11) is connected with a heat source inlet of the steam-steam heat exchanger (3) through a third connecting pipeline (13).
2. The system for improving the dryness of the converter waste heat steam is characterized by further comprising a spherical heat accumulator (4), wherein the first connecting pipeline (11) is connected with the spherical heat accumulator (4) through a first conveying pipeline (21) and a second conveying pipeline (22), and the first conveying pipeline (21) is connected with the second conveying pipeline (22) in parallel.
3. The system for improving the dryness of the steam generated by the waste heat of the converter according to claim 2, wherein a second regulating valve (5) is arranged on the first connecting pipeline (11), the joint of the first conveying pipeline (21) and the first connecting pipeline (11) is positioned between the second regulating valve (5) and the first regulating valve (2), and the joint of the second conveying pipeline (22) and the first connecting pipeline (11) is also positioned between the second regulating valve (5) and the first regulating valve (2).
4. The system for improving the dryness of the steam generated by the waste heat of the converter according to claim 3, wherein the connection position of the first conveying pipeline (21) and the first connecting pipeline (11) is positioned between the second regulating valve (5) and the connection position of the second conveying pipeline (22) and the first connecting pipeline (11).
5. The system for improving the dryness of the steam generated by the waste heat of the converter according to claim 4, wherein a first check valve (23) is arranged on the first conveying pipeline (21), a second check valve (24) is arranged on the second conveying pipeline (22), the fluid in the first connecting pipeline (11) can only enter the spherical heat accumulator (4) through the first check valve (23), and the fluid in the spherical heat accumulator (4) can only enter the first connecting pipeline (11) through the second check valve (24).
6. The system for improving the dryness of the steam generated by the converter waste heat according to claim 4, wherein the first connecting pipeline (11) is positioned above the spherical heat accumulator (4), the first conveying pipeline (21) and the second conveying pipeline (22) are both in an upright state, and the first conveying pipeline (21) and the second conveying pipeline (22) are both connected with the top of the spherical heat accumulator (4).
7. The system for improving the dryness of the steam generated by the converter waste heat according to claim 6, wherein a first conveying pipeline (21) penetrates through the top of the spherical heat accumulator (4), and the lower end of the first conveying pipeline (21) is positioned at the lower part in the spherical heat accumulator (4).
8. The system for improving the dryness of the waste heat and steam of the converter according to claim 2, wherein a fourth connecting pipeline (14) is connected to the outside of a heat source outlet of the steam-steam heat exchanger (3), and a third regulating valve (6) and a drain valve (7) are sequentially arranged on the fourth connecting pipeline (14).
9. The system for improving the dryness of the steam generated by the waste heat of the converter according to claim 1, wherein the steam-steam heat exchanger (3) is a plate heat exchanger or a shell-and-tube heat exchanger.
10. The system for improving the dryness of the steam generated by the waste heat of the converter according to claim 1, wherein the first regulating valve (2) is a pressure regulating valve, and the second regulating valve (5) and the third regulating valve (6) are both switch type valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377019.9U CN211475891U (en) | 2019-12-25 | 2019-12-25 | System for improving dryness of waste heat steam of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377019.9U CN211475891U (en) | 2019-12-25 | 2019-12-25 | System for improving dryness of waste heat steam of converter |
Publications (1)
| Publication Number | Publication Date |
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| CN211475891U true CN211475891U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922377019.9U Active CN211475891U (en) | 2019-12-25 | 2019-12-25 | System for improving dryness of waste heat steam of converter |
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| CN (1) | CN211475891U (en) |
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- 2019-12-25 CN CN201922377019.9U patent/CN211475891U/en active Active
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