CN214468509U - Converter waste heat recovery moisturizing subsystem - Google Patents
Converter waste heat recovery moisturizing subsystem Download PDFInfo
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- CN214468509U CN214468509U CN202023149614.6U CN202023149614U CN214468509U CN 214468509 U CN214468509 U CN 214468509U CN 202023149614 U CN202023149614 U CN 202023149614U CN 214468509 U CN214468509 U CN 214468509U
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Abstract
The utility model discloses a converter waste heat recovery water replenishing subsystem, which comprises a high-pressure steam distributing cylinder, a plurality of heat accumulators, a low-pressure steam distributing cylinder, a superheater and a PLC controller for controlling the system on line, wherein the high-pressure steam distributing cylinder, the plurality of heat accumulators, the low-pressure steam distributing cylinder and the superheater are sequentially connected with a converter steam inlet pipeline through pipelines; the water outlet of the heat accumulator is sequentially connected with a circulating pump, a circulating water flowmeter, an economizer and a water return port of each heat accumulator through a circulating water pipeline; a water return adjusting electric valve for controlling the water return amount of the corresponding heat accumulator is arranged at the water return port of the heat accumulator; the circulating water pipeline is connected with a water supply adjusting electric valve, a water supply pump and a water supply heat accumulator through a communicated water supply pipeline, and the water supply adjusting electric valve is linked with the liquid level of the heat accumulator. The utility model discloses can fully retrieve converter heat energy, can prevent that circulating pump entry gasification from producing cavitation, can the effective control circulating water volume stable to accessible heating device heating circulating water provides continuous, sufficient and stable steam source for the steam turbine, makes turbo generator set high efficiency, stable electricity generation.
Description
Technical Field
The utility model relates to a converter waste heat recovery technical field, concretely relates to converter waste heat recovery moisturizing subsystem.
Background
A converter is a metallurgical furnace for converting steel, and its body can rotate, and is therefore called a converter. The converter generates a large amount of heat in the smelting process, and besides a part of the heat is used for smelting, a great part of other heat (waste heat) is dissipated, so that the converter does not accord with the environmental protection concept of energy conservation and emission reduction.
At present, in order to reduce the waste of converter waste heat resources, a power generation technology for recycling converter waste heat is applied. However, due to the discontinuity of converter operation and a specific smelting period, the steam pressure and the output fluctuation are very large, so that the continuous steam supply and the steam supply flow of the steam turbine generator unit cannot reach the rated parameters of the unit, and therefore, related technicians configure a heat accumulator and circulating water on the steam turbine generator unit which recycles the converter waste heat for power generation to realize the uninterrupted and sufficient steam supply of the steam turbine generator unit.
The working principle of the heat accumulator is that heat energy is stored in a saturated water mode by utilizing the heat accumulation function of water, and then the heat accumulator is matched with a steam turbine power generation system to be used for steam power generation. Circulating water is taken from water in the heat accumulator, and is heated by the heating device to generate saturated steam to make up for the shortage of steam recovered by the converter waste heat, so that the power generation requirement of the steam turbine is met. If the operation of the steam turbine generator unit system is stable, steam needs to be supplied to the steam turbine generator unit stably; if the steam supply needs to be stable, the circulating water quantity needs to be stable. Therefore, how to control the circulating water amount to be stable is a problem that needs to be solved urgently by the technical staff at the present stage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a converter waste heat recovery moisturizing subsystem, but the effective control circulation water yield is stable.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The converter waste heat recovery water replenishing subsystem comprises a high-pressure steam distributing cylinder connected with a converter steam inlet pipeline through a pipeline, a plurality of heat accumulators connected with steam outlets of the high-pressure steam distributing cylinder through pipelines, a low-pressure steam distributing cylinder connected with steam outlets of the heat accumulators through pipelines, a superheater connected with steam outlets of the low-pressure steam distributing cylinder and arranged in a heating device, and a PLC (programmable logic controller) for controlling the system on line; the water outlet of the heat accumulator is sequentially connected with a circulating pump, a circulating water flow meter and an economizer arranged in the heating device through a circulating water pipeline, the controlled end of the circulating pump is connected with the output end of a PLC (programmable logic controller), the output end of the circulating water flow meter is connected with the input end of the PLC, and the water outlet of the economizer is connected with the water return port of each heat accumulator through a water return pipeline; a water return adjusting electric valve for controlling the water return amount of the corresponding heat accumulator is arranged at the water return port of the heat accumulator, the water return adjusting electric valve is interlocked with the liquid level of the corresponding heat accumulator, and the controlled end of the water return adjusting electric valve is connected with the output end of the PLC; the circulating water pipeline is connected with a water supply adjusting electric valve, a water supply pump and a water supply heat accumulator through a communicated water supply pipeline, the water supply adjusting electric valve is interlocked with the liquid level of the heat accumulator, the controlled end of the water supply adjusting electric valve is connected with the output end of the PLC, and the controlled end of the water supply pump is connected with the output end of the PLC.
Preferably, the water inlets of the heat accumulator and the water supply heat accumulator are connected to a condensed water pipe through a water replenishing pipeline.
Preferably, the inlet ends of the circulating pump and the water feeding pump are respectively provided with a Y-shaped filter for removing impurities in water.
Preferably, a steam inlet of the water supply heat accumulator is provided with a steam adjusting electric valve for controlling the inflow amount of steam from the heating furnace and is connected with the heating furnace through a pipeline; the steam adjusting electric valve is interlocked with the internal pressure of the water feeding heat accumulator and the inlet temperature of the water feeding pump, and the controlled end of the steam adjusting electric valve is connected with the output end of the PLC.
Preferably, a water inlet adjusting electric valve is arranged at a water inlet of the water supply heat accumulator, the water inlet adjusting electric valve is interlocked with the liquid level of the water supply heat accumulator, and the controlled end of the water inlet adjusting electric valve is connected with the output end of the PLC.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model can fully recover the heat energy of the converter through circulating water; through set up circulation water flow table and connect the feedwater heat accumulator on circulating line, can prevent that the gasification of circulating pump entry from producing cavitation, can effectively control the circulating water volume stable to accessible heating device heating circulating water provides continuous, sufficient and stable steam source for the steam turbine, can make turbo generator set high efficiency, stable electricity generation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the system comprises a low-pressure gas cylinder, a 2 high-pressure gas cylinder, a 3 heat accumulator, a 5 coal economizer, a 6 circulating water pipeline, a 61 circulating pump, a 62 standby circulating pump, a 63 circulating water flowmeter, a 7 water supply heat accumulator, a 71 water supply pipeline, a 72 water supply pump, a 73 standby water supply pump, a 74 steam adjusting electric valve, a 75 water inlet adjusting electric valve, a 76 water supply adjusting electric valve, a 77 temperature reducing water pipe, an 8 water return pipeline, a 81 water return branch pipeline, a 82 water return adjusting electric valve, a 9 water supply pipeline, a 10 superheater and a 11 heating device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A converter waste heat recovery water replenishing subsystem is shown in a combined figure 1 and comprises a high-pressure air distributing cylinder 2, a heat accumulator 3, a low-pressure air distributing cylinder 1, an economizer 5, a superheater 10, a heating device 11 and a PLC (programmable logic controller) for controlling the system on line, wherein the economizer 5 and the superheater 10 are arranged in the heating device 11. The steam inlet of the high-pressure steam distributing cylinder 2 is connected with a converter steam inlet pipeline through a pipeline, the steam outlet of the high-pressure steam distributing cylinder 2 is connected with the steam inlets of the two heat accumulators 3 through a pipeline (the number of the heat accumulators 3 connected with each high-pressure steam distributing cylinder 2 can be changed according to the actual demand condition), the steam outlet of each heat accumulator 3 is connected with the low-pressure steam distributing cylinder 1 through a pipeline, and the steam outlet of the low-pressure steam distributing cylinder 1 is connected with the superheater 10. The water outlet of the heat accumulator 3 is connected with an economizer 5 through a circulating water pipeline 6, and the water outlet of the economizer 5 is connected with the water return port of the heat accumulator 3 through a water return pipeline 8; the water inlet of the heat accumulator 3 is connected to the condensate pipe by a water replenishing pipe 9. The number of the high-pressure gas distributing cylinders 2 is set according to the number of the converters, and the high-pressure gas distributing cylinders are used for distributing converter incoming gas with high temperature to the heat accumulators 3. The high-pressure branch cylinders 2 can be communicated through pipelines, so that the steam distribution quantity of the regenerator 3 under the incoming steam of different converters can be adjusted when the incoming steam of each converter is unbalanced. The water outlet of the heat accumulator 3 is connected with an economizer 5 through a circulating water pipeline 6, and the water outlet of the economizer 5 is connected with the water return port of the heat accumulator 3 through a water return pipeline 8; the water inlet of the heat accumulator 3 is connected to the condensate pipe by a water replenishing pipe 9. The circulating water line 6 is connected to the feed water heat accumulator 7 via a feed water line 71.
The number of the high-pressure gas distributing cylinders 2 is set according to the number of the converters, and the high-pressure gas distributing cylinders are used for distributing converter incoming gas with high temperature to the heat accumulators 3. The high-pressure branch cylinders 2 can be communicated through pipelines, so that the steam distribution amount of the steam storage device under the steam from different converters can be adjusted when the steam from each converter is unbalanced.
A water taking hand valve is arranged on a water outlet of the heat accumulator 3 and is in a normally open state. When the pressure in the heat accumulator 3 is increased due to the increase of steam, the water outlet collects part of circulating water into the circulating water pipeline 6 through the water outlet branch pipeline. The circulating water pipeline 6 is sequentially provided with a circulating water temperature meter TE701, a circulating water remote pressure meter PT701, a Y-shaped filter, a circulating pump 61, a circulating pump outlet remote pressure meter PT702, a circulating pump outlet local pressure meter PG702 and a circulating water flow meter 63.
Circulating water temperature table TE701 is used for conveying the circulating water temperature of circulating pump entry end to the PLC controller, and the input of PLC controller is connected to circulating water temperature table TE 701's output. The circulating water remote pressure gauge PT701 is used for conveying the circulating water pressure at the inlet end of the circulating pump to the PLC, and the output end of the circulating water remote pressure gauge PT701 is connected with the input end of the PLC. The Y-shaped filter is used for removing impurities in the circulating water to protect the normal use of the circulating pump, and the Y-shaped filter is used for cleaning sand, soil, impurities and the like in the circulating pump before being put into use so as to prevent the mechanical seal from being damaged.
The high-temperature water inlet end and the low-temperature water outlet end of the circulating pump 61 are connected with the circulating water pipeline 6, the low-temperature water inlet end and the high-temperature water outlet end of the circulating pump 61 are connected with the purified water pipeline, and the circulating pump is used for exchanging heat between high-temperature circulating water and purified water, recycling heat resources and pumping the circulating water after heat exchange into the economizer 5. Circulating water pipeline 6 is provided with the reserve circulating pump 62 parallelly connected with circulating pump 61 through the bypass pipeline, when circulating pump 61 breaks down, starts reserve circulating pump 62, when two circulating pump colleagues break down, and the system on-line control is shut down the protection, and the output of PLC controller is connected to the controlled end of circulating pump 61 and reserve circulating pump 62.
The high-temperature water inlet ends of the circulating pump 61 and the standby circulating pump 62 are provided with normally open inlet hand valves, and the inlet hand valves are used for manually switching on and off circulating water flowing into the circulating pump; the low-temperature water outlet ends of the circulating pump 61 and the standby circulating pump 62 are sequentially provided with a check valve and an outlet electric gate valve, wherein the check valve is used for blocking backflow of circulating water, the outlet electric gate valve is used for controlling opening and closing of the circulating pump in an online mode, and the controlled end of the outlet electric gate valve is connected with the output end of the PLC.
The remote pressure gauge PT702 at the outlet of the circulating pump is used for transmitting the circulating water pressure at the outlet of the circulating pump to the PLC so as to monitor the pressure value on line; the output end of the remote pressure gauge PT702 at the outlet of the circulating pump is connected with the input end of the PLC. Circulating pump export manometer PG702 on spot is used for the on-the-spot monitoring pressure value, and the circulating pump export manometer PG702 on spot can not appear the signal transmission deviation problem of electronic measurement original paper, and the deviation appears when two manometer numerical values, can remind operating personnel pressure to have a problem to help the maintenance system. Circulating water flowmeter 63 is used for measuring the circulating water flow, and the input of PLC controller is connected to the output of circulating water flowmeter 63.
The number of the coal economizer 5 is three (the number of the coal economizer 5 can be changed according to the actual condition of the system), the three coal economizers 5 are sequentially connected through a pipeline, and the outlet of each coal economizer 5 is provided with an economizer outlet local pressure gauge and an economizer outlet remote pressure gauge. The remote pressure gauge at the outlet of the economizer is used for transmitting the pressure at the outlet of the economizer 5 to the PLC so as to monitor the pressure value on line; the output end of the long-distance pressure at the outlet of the economizer is connected with the input end of the PLC. The economizer export manometer in the spot is used for the on-the-spot monitoring pressure value, and the signal transmission deviation problem of electron measurement original paper can not appear in economizer export manometer in the spot, appears the deviation when two manometer numerical values, can remind operating personnel pressure to have the problem to help the maintenance system. The entry end that economizer 5 connects circulating water pipeline 6 is provided with and is used for conveying the thermometer of PLC controller with 5 entry temperatures of economizer who measures, and the input of PLC controller is connected to the output of thermometer.
The outlet of the economizer 5 is connected to the return water port of the heat accumulator 3 through a return water pipe 8 and a return water branch pipe 81, and the circulating water is returned to the heat accumulator 3. Each return water branch pipeline 81 is provided with a return water adjusting electric valve 82, each return water adjusting electric valve 82 is used for controlling the return water amount of the corresponding heat accumulator 3, each return water adjusting electric valve 82 is interlocked with the liquid level of the corresponding heat accumulator 3, and the controlled end of each return water adjusting electric valve 82 is connected with the output end of the PLC. And a gate valve is arranged in front of and behind the backwater adjusting electric valve 82 and used for manually controlling on-off backwater, the gate valve is normally in an open state, and when the backwater adjusting electric valve 82 breaks down, the gate valve is closed, and the steam outlet adjusting electric valve 82 is overhauled. Each water return branch pipeline 81 is also communicated with a bypass pipeline, a bypass valve is arranged on each bypass pipeline, the bypass valve is normally in a closed state, and when the steam outlet adjusting electric valve 82 breaks down, the gate valve is closed, the bypass valve is opened, and the normal operation of the system is guaranteed.
The circulating water pipe 6 is connected with a feed water heat accumulator 7 through a feed water pipe 71, and the feed water heat accumulator 7 is used for increasing the flow rate of circulating water and preventing cavitation caused by gasification of an inlet of the circulating pump. The connection point of the circulating water pipe 6 and the water feed pipe 71 is located in front of the circulating water temperature meter TE 701. The steam inlet end of the water supply heat accumulator 7 is connected with a heating furnace through a pipeline to supply steam, and the waste heat of the heating furnace can be recovered; a remote pressure gauge PT802 is arranged on the water supply heat accumulator 7, the remote pressure gauge PT802 is used for transmitting the pressure in the water supply heat accumulator 7 to a PLC (programmable logic controller) so as to monitor the pressure in the water supply heat accumulator 7 on line, and the output end of the remote pressure gauge PT802 is connected with the input end of the PLC; the steam inlet end of the water supply heat accumulator 7 is provided with a steam adjusting electric valve 74, the steam adjusting electric valve 74 is used for controlling the inflow of heating furnace incoming steam, the steam adjusting electric valve 74 is interlocked with the remote pressure gauge PT802 of the water supply heat accumulator 7 and the inlet temperature of the water supply pump 72, and the controlled end of the steam adjusting electric valve 74 is connected with the output end of the PLC.
The water outlet of the water supply heat accumulator 7 is used for discharging water, and when the water discharged from the heat accumulator 3 does not meet the circulating water quantity, the water outlet of the water supply heat accumulator 7 supplies water to the circulating water pipeline 6 through the connected water supply pipeline 71 to maintain the circulating water quantity. A water supply pipeline 71 connected with the water outlet of the water supply heat accumulator 7 is sequentially provided with a water supply pump inlet remote temperature TE901, a water supply pump inlet remote pressure PT901, a Y-shaped filter, a water supply pump 72, a water supply pump outlet remote pressure PT902, a water supply pump outlet local pressure PG901, a water supply outlet flow meter FE901 and a water supply adjusting electric valve 76.
The remote temperature TE901 of the inlet of the feed pump is used for transmitting the temperature of the inlet of the feed pump to the PLC so as to monitor the temperature value on line; the output end of the remote temperature TE901 at the inlet of the feed water pump is connected with the input end of the PLC controller. The feed pump inlet remote pressure PT901 is used for transmitting the feed pump inlet pressure to the PLC so as to monitor the feed pump inlet pressure value on line; the output end of the remote pressure PT901 of the feed pump inlet is connected with the input end of the PLC. The Y-shaped filter is used for removing impurities in the circulating water to protect the normal use of the water feeding pump, and the Y-shaped filter is used for cleaning sand, soil, impurities and the like in the water feeding pump before being put into use so as to prevent the mechanical seal from being damaged.
The high temperature water inlet end and the low temperature water outlet end of the water feed pump 72 are connected with the water feed pipeline 71, the low temperature water inlet end and the high temperature water outlet end of the water feed pump 72 are connected with the water purification pipeline, the water feed pump is used for exchanging heat between high temperature water and purified water, recovering heat resources, and pumping the water after heat exchange into the circulating water pipeline 6. The water supply pipeline 71 is provided with a standby water supply pump 73 connected with the water supply pump 72 in parallel through a bypass pipeline, when the water supply pump 72 fails, the standby water supply pump 73 is started, and the controlled ends of the water supply pump 72 and the standby water supply pump 73 are connected with the output end of the PLC.
The high-temperature water inlet ends of the water feeding pump 72 and the standby water feeding pump 73 are provided with normally open inlet hand valves, and the inlet hand valves are used for manually switching on and off water flowing into the water feeding pump; the low-temperature water outlet ends of the water feeding pump 72 and the standby water feeding pump 73 are sequentially provided with a check valve and an outlet electric gate valve, wherein the check valve is used for blocking water backflow, the outlet electric gate valve is used for controlling the on-line opening and closing of the water feeding pump, and the controlled end of the outlet electric gate valve is connected with the output end of the PLC.
The feed pump outlet remote pressure PT902 is used for transmitting the water pressure at the outlet of the feed pump to the PLC so as to monitor the pressure value on line; the output end of the feed pump outlet remote pressure PT902 is connected with the input end of the PLC controller. The water feed pump outlet local pressure PG901 is used for monitoring the pressure value on site, the problem of signal transmission deviation of an electronic measurement element can not occur to the water feed pump outlet local pressure PG901, and when the deviation occurs to the numerical values of two pressure gauges, the pressure of an operator can be reminded to cause a problem, so that the maintenance system is facilitated. The water supply outlet flow meter FE901 is used for measuring the water supply flow, and the output end of the water supply outlet flow meter FE901 is connected with the input end of the PLC controller. The water supply adjusting electric valve 76 is used for controlling the water supply amount flowing into the circulating water pipeline 6, the water supply adjusting electric valve 76 is interlocked with the liquid level of the heat accumulator 3 to keep the liquid level of the heat accumulator 3 stable, and the controlled end of the water supply adjusting electric valve 76 is connected with the output end of the PLC. The front and the back of the water supply adjusting electric valve 76 are respectively provided with a gate valve, the gate valves are used for manually controlling the on-off of water supply, the gate valves are normally in an open state, and when the water supply adjusting electric valve 76 breaks down, the gate valves are closed, and the water supply adjusting electric valve 76 is overhauled. The water supply pipeline 71 is also communicated with a bypass pipeline, a bypass valve is arranged on the bypass pipeline, the bypass valve is connected with the water supply adjusting electric valve 76 and the gate valves in front and at the back of the water supply adjusting electric valve in parallel, the bypass valve is normally closed, and when the water supply adjusting electric valve 76 breaks down, the gate valve is closed, the bypass valve is opened, and the normal operation of the system is guaranteed.
The other water outlet of the water supply heat accumulator 7 is connected with a temperature reduction water inlet arranged on the superheater 10 through a temperature reduction water pipe 77, when the temperature of steam in the superheater 10 is too high, the other water outlet of the water supply heat accumulator 7 discharges water, and the water flows into the superheater 10 from the temperature reduction water inlet through the temperature reduction water pipe 77 so as to reduce the temperature of the steam, so that the temperature of the steam is not too high, and more steam can be generated. The inlet end of the desuperheating water flow of the superheater 10 is provided with a desuperheating water regulating valve, the desuperheating water regulating valve is used for regulating the inflow of desuperheating water, and the controlled end of the desuperheating water regulating valve is connected with the output end of the PLC controller.
The water inlets of the heat accumulator 3 and the water supply heat accumulator 7 are connected to a water replenishing pipeline 9 through a water replenishing branch pipeline, the water replenishing pipeline 9 is connected to a condensed water pipe, the condensed water pipe is connected to a steam turbine condenser hot well, and the condensed water is pressurized by a condensed water pump and enters the heat accumulator 3 and the water supply heat accumulator 7 through the water replenishing pipeline 9 and the water replenishing branch pipeline. And a water replenishing branch pipeline connected with the water inlet of each heat accumulator 3 is provided with a valve for switching on and off water replenishing, and when the water supply system cannot meet the requirement of circulating water quantity, the valve is used for switching on and off the water inlet of the heat accumulator 3. The water supply branch pipeline connected with the water inlet of the water supply heat accumulator 7 is provided with a water inlet adjusting electric valve 75, the water inlet adjusting electric valve 75 is used for adjusting the water inlet amount of the water supply heat accumulator 7, the water inlet adjusting electric valve 75 is linked with the liquid level of the water supply heat accumulator 7, and the controlled end of the water inlet adjusting electric valve 75 is connected with the output end of the PLC.
The PLC is used for controlling the system on line, monitoring and recording data of each meter, and giving an alarm when the data transmitted from the meters exceeds the limit in time, so as to prompt related personnel and contribute to the automation and the safety of the system.
When the utility model is used, the heat accumulator 3 and the water supply heat accumulator 7 are filled with water under normal pressure; starting any circulating pump and a water supply pump, connecting the heat accumulator 3 with the high-pressure steam distributing cylinder 2, and controlling the water supply heat accumulator 7 to be connected with a heating furnace to supply steam through a steam adjusting electric valve; the heat accumulator 3 and the water supply heat accumulator 7 store heat energy in a saturated water form, and a circulating water flow value is controlled on line through a PLC (programmable logic controller) according to the circulating water flow; when the water outlet in each heat accumulator 3 can not meet the circulating water flow value, the water outlet of the water supply heat accumulator 7 supplies water to the circulating water to meet the circulating water flow value requirement, and meanwhile, the inlet of the circulating pump is prevented from being gasified to generate cavitation; the effluent is collected in a circulating water pipeline 6 and sent into an economizer 5 through heat exchange of a circulating pump. When the saturated steam at the steam outlet end of the low-pressure steam distributing cylinder 1 is sufficient, the saturated steam is superheated into superheated steam through the superheater 10 and is conveyed to a steam-water separator for separation, and a steam source is provided for the steam turbine generator unit; when the saturated steam at the steam outlet end of the low-pressure steam distributing cylinder 1 is intermittent or insufficient, the circulating water flowing through the economizer 5 is heated by the heating device 11 to generate continuous, sufficient and stable saturated steam, the generated saturated steam and the original saturated steam are superheated into superheated steam through the superheater 10 and are conveyed to a steam-water separator for separation, and a steam source is provided for the steam turbine generator unit.
Claims (5)
1. Converter waste heat recovery moisturizing subsystem, its characterized in that: the system comprises a high-pressure steam distributing cylinder (2) connected with a converter steam inlet pipeline through a pipeline, a plurality of heat accumulators (3) connected with steam outlets of the high-pressure steam distributing cylinder (2) through pipelines, a low-pressure steam distributing cylinder (1) connected with steam outlets of the heat accumulators (3) through pipelines, a superheater (10) connected with the steam outlet of the low-pressure steam distributing cylinder (1) and arranged in a heating device (11), and a PLC (programmable logic controller) for controlling the system on line; the water outlet of the heat accumulator (3) is sequentially connected with a circulating pump, a circulating water flowmeter (63) and an economizer (5) arranged in the heating device (11) through a circulating water pipeline (6), the controlled end of the circulating pump is connected with the output end of a PLC (programmable logic controller), the output end of the circulating water flowmeter (63) is connected with the input end of the PLC, and the water outlet of the economizer (5) is connected with the water return port of each heat accumulator (3) through a water return pipeline (8); a water return adjusting electric valve (82) used for controlling the water return amount of the corresponding heat accumulator (3) is arranged at the water return port of the heat accumulator (3), the water return adjusting electric valve (82) is interlocked with the liquid level of the corresponding heat accumulator (3), and the controlled end of the water return adjusting electric valve (82) is connected with the output end of the PLC; the circulating water pipeline (6) is connected with a water supply adjusting electric valve (76), a water supply pump and a water supply heat accumulator (7) through a communicated water supply pipeline (71), the water supply adjusting electric valve (76) is interlocked with the liquid level of the heat accumulator (3), the controlled end of the water supply adjusting electric valve (76) is connected with the output end of the PLC, and the controlled end of the water supply pump is connected with the output end of the PLC.
2. The converter waste heat recovery and water replenishing subsystem according to claim 1, characterized in that: and water inlets of the heat accumulator (3) and the water supply heat accumulator (7) are connected to a condensate pipe through a water replenishing pipeline (9).
3. The converter waste heat recovery and water replenishing subsystem according to claim 1, characterized in that: and the inlet ends of the circulating pump and the water feeding pump are respectively provided with a Y-shaped filter for removing impurities in water.
4. The converter waste heat recovery and water replenishing subsystem according to claim 1, characterized in that: a steam inlet of the water supply heat accumulator (7) is provided with a steam adjusting electric valve (74) for controlling the inflow amount of steam from the heating furnace and is connected with the heating furnace through a pipeline; the steam adjusting electric valve (74) is interlocked with the internal pressure of the water feeding heat accumulator (7) and the inlet temperature of the water feeding pump, and the controlled end of the steam adjusting electric valve (74) is connected with the output end of the PLC.
5. The converter waste heat recovery and water replenishing subsystem according to claim 1, characterized in that: the water inlet of the water supply heat accumulator (7) is provided with a water inlet adjusting electric valve (75), the water inlet adjusting electric valve (75) is interlocked with the liquid level of the water supply heat accumulator (7), and the controlled end of the water inlet adjusting electric valve (75) is connected with the output end of the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023149614.6U CN214468509U (en) | 2020-12-24 | 2020-12-24 | Converter waste heat recovery moisturizing subsystem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023149614.6U CN214468509U (en) | 2020-12-24 | 2020-12-24 | Converter waste heat recovery moisturizing subsystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214468509U true CN214468509U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023149614.6U Active CN214468509U (en) | 2020-12-24 | 2020-12-24 | Converter waste heat recovery moisturizing subsystem |
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| Country | Link |
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| CN (1) | CN214468509U (en) |
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2020
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