CN218954864U - Device for carrying out steam grading stable overheating by using unsteady state flue gas - Google Patents
Device for carrying out steam grading stable overheating by using unsteady state flue gas Download PDFInfo
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Abstract
The utility model discloses a device for performing steam grading stable overheating by using unsteady state flue gas, which comprises a ladder waste heat recovery device which is connected to a pipeline for conveying unsteady state flue gas and used for carrying out ladder waste heat recovery on the unsteady state flue gas, a steam grading conversion device which is connected with the ladder waste heat recovery device and used for converting steam generated by the ladder waste heat recovery device into stable micro-overheat saturated steam and conveying the stable micro-overheat saturated steam to the ladder waste heat recovery device so as to convert the stable micro-overheat saturated steam into stable overheat steam by using the ladder waste heat recovery device and further externally supplying the stable overheat steam, and an editable logic controller which is connected with the steam grading conversion device and used for realizing automatic control of a steam grading stable overheating process. The utility model can utilize unsteady state flue gas to stably overheat the steam generated by waste heat recovery.
Description
Technical Field
The utility model relates to the technical field of unsteady state flue gas waste heat recovery, in particular to a device for performing steam grading stable overheating by utilizing unsteady state flue gas.
Background
In order to respond to the main ecological environment-friendly advocacy goal of national energy conservation and carbon reduction, all large steel enterprises in China take necessary flue gas waste heat recovery measures in the aspects of recycling flue gas waste heat in all main production process links such as sintering, converter, electric furnace, steel rolling heating furnace and the like.
However, how to efficiently utilize the steam generated by the waste heat recovery is limited by the unsteady state of the flue gas (the flue gas flow and the temperature can be fluctuated in a short time) in part of the production process links, and the low-grade steam (saturated steam) generated by the waste heat recovery cannot be continuously and stably converted into high-grade steam (superheated steam) temporarily.
Saturated steam is limited by its specific physical characteristics, both from the point of view of delivery distance and applicable scope; in addition, the direct utilization of saturated steam (a saturated steam power generation system or a steam-electric double-towed system and the like) has low steam utilization rate, and cannot achieve the same efficient utilization as the superheated steam. Therefore, the stable superheating of the steam generated by the recovery of the waste heat of the unstable flue gas can be realized, and the problem to be solved by the technicians in the prior art is urgent.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a device for carrying out steam grading stable overheating by using unstable flue gas, which can stably overheat steam generated by waste heat recovery of the unstable flue gas.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The device comprises a step waste heat recovery device which is connected to a pipeline for conveying unsteady state flue gas and used for carrying out step waste heat recovery on the unsteady state flue gas, a steam grading conversion device which is connected with the step waste heat recovery device and used for converting steam generated by the step waste heat recovery device into stable micro-overheat saturated steam and conveying the stable micro-overheat saturated steam to the step waste heat recovery device so as to convert the stable micro-overheat saturated steam into stable overheat steam by using the step waste heat recovery device and further externally supply the stable overheat steam, and an editable logic controller which is connected with the steam grading conversion device and used for realizing automatic control of a steam grading stable overheat process;
a high-temperature evaporator, a tube bundle type steam superheater and a low-temperature evaporator are sequentially arranged in the step waste heat recovery equipment according to the flowing direction of unsteady-state flue gas;
the steam grading conversion equipment comprises a steam drum connected with the high-temperature evaporator and the low-temperature evaporator, a heat accumulator connected with a saturated steam outlet of the steam drum, and a micro-superheater arranged in the heat accumulator and used for micro-superheating saturated steam; the saturated steam inlet of the micro-superheater is communicated with the saturated steam outlet of the heat accumulator through a micro-superheater inlet pipe, and the micro-superheated saturated steam outlet of the micro-superheater is communicated with the micro-superheated saturated steam inlet of the tube bundle type steam superheater through a micro-superheater outlet pipe; an electric regulating valve for realizing continuous and stable supply of saturated steam to the micro-superheater by the heat accumulator is arranged on the inlet pipe of the micro-superheater, and the controlled end of the electric regulating valve is connected with the output end of the editable logic controller.
Preferably, the high-temperature evaporator is connected with the steam drum through a high-temperature rising pipe and a high-temperature falling pipe; the low-temperature evaporator is connected with the steam drum through a low-temperature down pipe and a low-temperature up pipe; the steam-water separation equipment is arranged in the steam drum.
Preferably, the saturated steam outlet of the steam drum is communicated with the saturated steam inlet of the heat accumulator through a main steam pipeline; the interior of the heat accumulator stores water.
Preferably, the micro superheater is arranged below the internal liquid level of the regenerator.
Preferably, the steam fractional conversion equipment further comprises a temperature-reducing pressure reducer and an electric superheater, wherein the rear end of a superheated steam outlet of the tube bundle type steam superheater is sequentially connected with an outlet tube of the tube bundle type steam superheater, the temperature-reducing pressure reducer is used for spraying water into the superheated steam in the outlet tube of the tube bundle type steam superheater to reduce and adjust the temperature and the pressure of the superheated steam, and the electric superheater is used for continuously superheating the superheated steam in the outlet tube of the tube bundle type steam superheater to ensure that the temperature and the pressure of the hot steam reach set values; and the controlled ends of the temperature and pressure reducing device and the electric superheater are respectively connected with the output end of the editable logic controller.
Preferably, the micro-superheater outlet pipe is provided with a superheater inlet temperature detection, a superheater inlet pressure detection and a superheater inlet flow rate detection for detecting the temperature, the pressure and the flow rate of the micro-superheated saturated steam flowing to the tube bundle steam superheater in the micro-superheater outlet pipe on line; the tube bundle type steam superheater outlet pipe at the front end of the temperature and pressure reducing device is provided with superheater outlet temperature detection, superheater outlet pressure detection and superheater outlet flow detection which are used for detecting the temperature, pressure and flow of superheated steam flowing into the tube bundle type steam superheater outlet pipe from the tube bundle type steam superheater on line; and the output ends of the superheater inlet temperature detection, the superheater inlet pressure detection, the superheater inlet flow detection, the superheater outlet temperature detection, the superheater outlet pressure detection and the superheater outlet flow detection are respectively connected with the input end of the editable logic controller.
Preferably, the outlet pipe of the tube bundle type steam superheater at the rear end of the temperature and pressure reduction device is communicated with an electric superheater bypass pipe, and the electric superheater is connected with the electric superheater bypass pipe in parallel through an electric superheater inlet pipe and an electric superheater outlet pipe; a first electromagnetic valve for controlling the on-off of the electric superheater inlet pipe is arranged at one end, close to the electric superheater bypass pipe, of the electric superheater inlet pipe, a second electromagnetic valve for controlling the on-off of the electric superheater outlet pipe is arranged at one end, close to the electric superheater inlet pipe, of the electric superheater outlet pipe, and a third electromagnetic valve for controlling the on-off of the electric superheater bypass pipe is arranged at one end, close to the electric superheater inlet pipe, of the electric superheater bypass pipe; and the controlled ends of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected with the output end of the editable logic controller.
By adopting the technical scheme, the utility model has the following technical progress.
The utility model can meet various unstable flue gas working conditions and fully excavate the waste heat recovery potential of the unstable flue gas through the high temperature evaporator, the tube bundle type steam superheater, the low temperature evaporator, the steam drum, the heat accumulator, the electric regulating valve, the micro superheater, the temperature-reducing pressure reducer and the electric superheater, and can continuously and stably provide superheated steam by utilizing the classified steam superheating technology, thereby greatly expanding the conveying distance and the applicable scope of the steam while improving the steam grade, greatly improving the steam utilization rate, realizing the closed circulation of recovering the unstable flue gas waste heat to the high-efficiency utilization of the steam, further reducing the running cost of enterprises, improving the economic benefit and market competitiveness of the enterprises, and having various advantages and practical application values.
According to the utility model, the automatic control of the device can be realized through the arranged editable logic controller, the detection of the inlet temperature of the superheater, the detection of the inlet pressure of the superheater, the detection of the inlet flow of the superheater, the detection of the outlet temperature of the superheater, the detection of the outlet pressure of the superheater and the detection of the outlet flow of the superheater.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Wherein: 1. high temperature evaporator, 2. Tube bundle steam superheater, 3. Low temperature evaporator, 4. Steam drum, 5. Heat accumulator, 6. Electric regulator valve, 7. Micro superheater, 8. Superheater inlet temperature test, 9. Superheater inlet pressure test, 10. Superheater inlet flow test, 11. Superheater outlet temperature test, 12. Superheater outlet pressure test, 13. Superheater outlet flow test, 14. Desuperheater, 15. Electric superheater, 16. High temperature riser, 17. High temperature downcomer, 18. Low temperature downcomer, 19. Low temperature riser, 20. Main steam pipe, 21. Micro superheater inlet pipe, 22. Micro superheater outlet pipe, 23. Tube bundle steam superheater outlet pipe, 24. Electric superheater inlet pipe, 25. Electric superheater outlet pipe, 26. Electric superheater bypass pipe, 27. Programmable logic controller.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
The device for performing steam grading stable overheating by using unsteady state flue gas comprises a ladder waste heat recovery device, a steam grading conversion device and an editable logic controller 27, as shown in the figure 1, wherein the ladder waste heat recovery device is connected to a pipeline for conveying the unsteady state flue gas and is used for performing ladder waste heat recovery on the unsteady state flue gas; the steam grading conversion equipment is connected with the ladder waste heat recovery equipment and is used for converting the steam generated by the ladder waste heat recovery equipment into stable micro-overheat saturated steam and conveying the stable micro-overheat saturated steam to the ladder waste heat recovery equipment, and converting the stable micro-overheat saturated steam into stable superheated steam by using the ladder waste heat recovery equipment so as to supply the stable superheated steam to the outside; an editable logic controller 27 is connected with the steam grading conversion equipment, and the editable logic controller 27 is used for realizing automatic control of the steam grading stable overheat process.
The multistage heat exchange module comprises a high-temperature evaporator 1, a tube bundle type steam superheater 2 and a low-temperature evaporator 3, wherein the high-temperature evaporator 1, the tube bundle type steam superheater 2 and the low-temperature evaporator 3 are sequentially arranged according to the flowing direction of unstable flue gas, and the unstable flue gas after deep step waste heat recovery enters subsequent flue gas treatment process equipment.
The steam pressure and the steam temperature generated when the step waste heat recovery equipment recovers waste heat are influenced by the unsteadiness of the flue gas and are not continuous and stable values; through detailed thermodynamic calculation of temperature change between each stage of heat exchange modules, firstly, each temperature gradient distribution of unsteady flue gas from an inlet to an outlet is determined; and simultaneously, matching the corresponding saturation temperature of the saturated steam under different pressure levels with the flue gas temperature gradient to determine the flue gas temperature interval capable of being used for superheating the saturated steam, and determining the corresponding steam pressure.
In the selected flue gas temperature interval, a tube bundle type steam superheater 2 is arranged, and the tube bundle type steam superheater 2 can be arranged vertically or horizontally according to the characteristics of flue gas and dust concentration. The high-temperature evaporator 1 and the low-temperature evaporator 3 can be arranged vertically or horizontally according to the actual working condition of unsteady flue gas, and the specific configuration quantity can be one group or a plurality of groups. The heat exchange tube bundles in the high-temperature evaporator 1 and the low-temperature evaporator 3 can adopt light tube type, high-frequency spiral fin type or H-type fin type heat exchange tube bundles according to specific arrangement forms and unsteady state smoke characteristics. The outer wall plate steel of the high-temperature evaporator 1 adopts a common carbon steel structure, and the inner surface is filled with castable with high-temperature resistance and wear resistance properties, so that the manufacturing cost can be greatly reduced while the service life of equipment is ensured.
The steam fractional reforming device comprises a steam drum 4, a heat accumulator 5, a micro superheater 7, a temperature and pressure reducer 14 and an electric superheater 15.
The high temperature evaporator 1 is connected with the steam drum 4 through a high temperature rising pipe 16 and a high temperature falling pipe 17, and the low temperature evaporator 3 is connected with the steam drum 4 through a low temperature falling pipe 18 and a low temperature rising pipe 19. The steam generated by the high-temperature evaporator 1 and the low-temperature evaporator 3 is converged into the steam drum 4, and steam-water separation equipment is arranged in the steam drum 4 and used for efficiently separating steam from saturated steam so as to reduce the water carrying amount of the saturated steam.
The saturated steam outlet of the steam drum 4 is communicated with the saturated steam inlet of the heat accumulator 5 through the main steam pipeline 20, so that saturated steam is conveyed to the heat accumulator 5 through the main steam pipeline 20, and unstable saturated steam is subjected to heat accumulation and storage. In normal operation, a certain amount of water (75% -85%) is stored in the heat accumulator 5, and the saturated steam supplied thereto heats the water stored in the heat accumulator 5 sufficiently and maintains a high pressure level.
The micro-superheater 7 is arranged in the heat accumulator 5, a saturated steam inlet of the micro-superheater 7 is communicated with a saturated steam outlet of the heat accumulator 5 through a micro-superheater inlet pipe 21, and an electric regulating valve 6 is arranged on the micro-superheater inlet pipe 21. After determining the steam pressure, the heat accumulator 5 continuously and stably provides saturated steam with target pressure for the micro-superheater 7 by utilizing the working principle of flash evaporation under the adjustment of the electric regulating valve 6, so as to provide basic conditions for continuous and stable superheating of subsequent saturated steam. The micro superheater 7 is arranged below the liquid surface in the heat accumulator 5, and the saturated steam in the micro superheater 7 is subjected to micro superheating by utilizing a heat transfer temperature difference between the water in the heat accumulator 5 and the saturated steam in the micro superheater 7 due to different pressures.
The micro superheater 7 adopts a single-flow tube bundle superheater, the tube bundle adopts a light tube, and the material can be reasonably selected according to the steam temperature. The micro-superheated saturated steam outlet of the micro-superheater 7 communicates with the micro-superheated saturated steam inlet of the tube bundle steam superheater 2 through a micro-superheater outlet pipe 22, so that the micro-superheated saturated steam is delivered to the tube bundle steam superheater 2 through the micro-superheater outlet pipe 22.
The superheated steam outlet of the tube bundle type steam superheater 2 is sequentially communicated with the temperature and pressure reducer 14 and the electric superheater 15 through communicated tube bundle type steam superheater outlet pipes 23. The tube bundle type steam superheater 2 utilizes the sensible heat of the unstable flue gas to deeply superheat the slightly superheated saturated steam, and the generated superheated steam is conveyed to the subsequent temperature and pressure reducer 14 and the electric superheater 15 through the tube bundle type steam superheater outlet pipe 23. After passing through the tube bundle type steam superheater 2, the slightly superheated saturated steam can generate unpredictable changes along with fluctuation of the flue gas due to unsteadiness of the flue gas, and a temperature and pressure reducer 14 and an electric superheater 15 are arranged at the superheated steam outlet of the tube bundle type steam superheater 2 in order to ensure stability of the superheated steam pressure and temperature.
The temperature and pressure reducer 14 is directly arranged at the rear end of the superheated steam outlet of the tube bundle type steam superheater 2 through the tube bundle type steam superheater outlet pipe 23, and the temperature and pressure reducer 14 is used for spraying water into the superheated steam in the tube bundle type steam superheater outlet pipe 23 to reduce and regulate the temperature and pressure of the superheated steam.
The tube bundle type steam superheater outlet pipe 23 at the rear end of the temperature and pressure reducing device 14 is communicated with an electric superheater bypass pipe 26, the electric superheater 15 is connected with the electric superheater bypass pipe 26 in parallel through an electric superheater inlet pipe 24 and an electric superheater outlet pipe 25, and the electric superheater 15 is used for continuously superheating superheated steam in the tube bundle type steam superheater outlet pipe 23 to ensure that the temperature and the pressure of the superheated steam reach set values. A first electromagnetic valve is arranged at one end, close to the electric superheater bypass pipe 26, of the electric superheater inlet pipe 24 and is used for controlling on-off of the electric superheater inlet pipe 24; a second electromagnetic valve is arranged at one end, close to the electric superheater bypass pipe 26, of the electric superheater outlet pipe 25 and is used for controlling on-off of the electric superheater outlet pipe 25; a third electromagnetic valve is arranged on one end, close to the electric superheater inlet pipe 24, of the electric superheater bypass pipe 26, and the third electromagnetic valve is used for controlling on-off of the electric superheater bypass pipe 26.
When the temperature and pressure of the superheated steam exceed the set values, water is sprayed into the superheated steam by the temperature and pressure reducer 14, and the temperature and pressure of the superheated steam are reduced and adjusted to the set values by evaporation of the water. The qualified superheated steam is delivered to each steam plant via an electrical superheater bypass line 26. At this time, the electric superheater 15 does not need to be put into use, and the electric superheater inlet pipe 24 and the electric superheater outlet pipe 25 are in a closed state.
When the temperature and pressure of the superheated steam are lower than the set values, the temperature and pressure reducer 14 does not need to be put into use, and the superheated steam enters the electric superheater 15 to be continuously superheated, so that the temperature and pressure of the superheated steam are ensured to reach the set values; at this time, the electric superheater bypass tube 26 is in a closed state.
The micro-superheater outlet pipe 22 is provided with a superheater inlet temperature detection 8, a superheater inlet pressure detection 9 and a superheater inlet flow rate detection 10, and the superheater inlet temperature detection 8, the superheater inlet pressure detection 9 and the superheater inlet flow rate detection 10 are respectively used for detecting the temperature, the pressure and the flow rate of the micro-superheated saturated steam flowing to the tube bundle steam superheater 2 in the micro-superheater outlet pipe 22 on line. The tube bundle type steam superheater outlet pipe 23 at the front end of the temperature and pressure reducer 14 is provided with a superheater outlet temperature detection 11, a superheater outlet pressure detection 12 and a superheater outlet flow rate detection 13, and the superheater outlet temperature detection 11, the superheater outlet pressure detection 12 and the superheater outlet flow rate detection 13 are used for detecting the temperature, the pressure and the flow rate of superheated steam flowing into the tube bundle type steam superheater outlet pipe 23 from the tube bundle type steam superheater 2 on line.
Target values of the superheated steam temperature and pressure are set in the editable logic controller 27, and can be flexibly adjusted according to actual requirements so as to adapt to requirements of different devices on the superheated steam quality. The input end of the editable logic controller 27 is respectively connected with the output ends of the superheater inlet temperature detection 8, the superheater inlet pressure detection 9, the superheater inlet flow detection 10, the superheater outlet temperature detection 11, the superheater outlet pressure detection 12 and the superheater outlet flow detection 13; the output end of the editable logic controller 27 is respectively connected with the controlled ends of the electric regulating valve 6, the temperature and pressure reducing device 14, the electric superheater 15, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve. The editable logic controller 27 compares the real-time data detected by the collected superheater inlet temperature detection 8, the superheater inlet pressure detection 9, the superheater inlet flow detection 10, the superheater outlet temperature detection 11, the superheater outlet pressure detection 12 and the superheater outlet flow detection 13 with set values, automatically outputs feedback according to a given control logic, automatically adjusts the working states of the electric control valve 6, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the temperature-reducing pressure reducer 14 and the electric superheater 15, and fully realizes the automatic operation of the device.
When the utility model is used, the flue gas side flow is as follows: unsteady flue gas- & gt high temperature evaporator 1- & gt tube bundle steam superheater 2- & gt low temperature evaporator 3- & gt subsequent flue gas treatment process equipment.
Steam side flow one: the steam drum 4, the main steam pipeline 20, the heat accumulator 5, the electric regulating valve 6, the micro superheater inlet pipe 21, the micro superheater 7, the micro superheater outlet pipe 22, the tube bundle type steam superheater 2, the tube bundle type steam superheater outlet pipe 23, the temperature and pressure reducer 14 and externally supplied superheated steam.
Steam side flow two: the steam drum 4, the main steam pipeline 20, the heat accumulator 5, the electric regulating valve 6, the micro superheater inlet pipe 21, the micro superheater 7, the micro superheater outlet pipe 22, the tube bundle type steam superheater 2, the tube bundle type steam superheater outlet pipe 23, the electric superheater 15 and externally supplied superheated steam.
Claims (7)
1. The utility model provides an utilize unsteady state flue gas to carry out device that steam classification stabilized overheated which characterized in that: the device comprises a step waste heat recovery device which is connected to a pipeline for conveying unsteady state flue gas and used for carrying out step waste heat recovery on the unsteady state flue gas, a steam grading conversion device which is connected with the step waste heat recovery device and used for converting steam generated by the step waste heat recovery device into stable micro-overheat saturated steam and conveying the stable micro-overheat saturated steam to the step waste heat recovery device so as to convert the stable micro-overheat saturated steam into stable overheat steam by using the step waste heat recovery device and further externally supplying the stable overheat steam, and an editable logic controller (27) which is connected with the steam grading conversion device and used for realizing automatic control of the steam grading stable overheat process;
a high-temperature evaporator (1), a tube bundle type steam superheater (2) and a low-temperature evaporator (3) are sequentially arranged in the step waste heat recovery equipment according to the flowing direction of unsteady-state flue gas;
the steam grading conversion equipment comprises a steam drum (4) connected with the high-temperature evaporator (1) and the low-temperature evaporator (3), a heat accumulator (5) connected with a saturated steam outlet of the steam drum (4), and a micro-superheater (7) arranged in the heat accumulator (5) and used for slightly superheating the saturated steam; the saturated steam inlet of the micro-superheater (7) is communicated with the saturated steam outlet of the heat accumulator (5) through a micro-superheater inlet pipe (21), and the micro-superheated saturated steam outlet of the micro-superheater (7) is communicated with the micro-superheated saturated steam inlet of the tube bundle type steam superheater (2) through a micro-superheater outlet pipe (22); an electric regulating valve (6) for continuously and stably supplying saturated steam to the micro superheater (7) is arranged on the micro superheater inlet pipe (21), and the controlled end of the electric regulating valve (6) is connected with the output end of the editable logic controller (27).
2. The apparatus for steam staged stable superheating utilizing unsteady state flue gas according to claim 1, wherein: the high-temperature evaporator (1) is connected with the steam drum (4) through a high-temperature rising pipe (16) and a high-temperature falling pipe (17); the low-temperature evaporator (3) is connected with the steam drum (4) through a low-temperature down pipe (18) and a low-temperature up pipe (19); the steam-water separation equipment is arranged in the steam drum (4).
3. The apparatus for steam staged stable superheating utilizing unsteady state flue gas according to claim 1, wherein: the saturated steam outlet of the steam drum (4) is communicated with the saturated steam inlet of the heat accumulator (5) through a main steam pipeline (20); the heat accumulator (5) stores water therein.
4. A device for steam staged stable superheating using unsteady state flue gas according to claim 3, characterized in that: the micro superheater (7) is arranged below the inner liquid level of the heat accumulator (5).
5. The apparatus for steam staged stable superheating utilizing unsteady state flue gas according to claim 1, wherein: the steam grading conversion equipment further comprises a temperature and pressure reducing device (14) and an electric superheater (15), wherein the temperature and pressure reducing device is sequentially connected to the rear end of a superheated steam outlet of the tube bundle type steam superheater (2) through a tube bundle type steam superheater outlet pipe (23), is used for spraying water into the superheated steam in the tube bundle type steam superheater outlet pipe (23) to reduce and adjust the temperature and pressure of the superheated steam, and is used for continuously superheating the superheated steam in the tube bundle type steam superheater outlet pipe (23) to ensure that the temperature and pressure of the superheated steam reach set values; the controlled ends of the temperature and pressure reducing device (14) and the electric superheater (15) are respectively connected with the output end of the editable logic controller (27).
6. The apparatus for steam staged stable superheating utilizing unsteady state flue gas according to claim 5, wherein: the micro-superheater outlet pipe (22) is provided with a superheater inlet temperature detection (8), a superheater inlet pressure detection (9) and a superheater inlet flow rate detection (10) which are used for detecting the temperature, the pressure and the flow rate of micro-superheated saturated steam flowing to the tube bundle steam superheater (2) in the micro-superheater outlet pipe (22) on line; the tube bundle type steam superheater outlet pipe (23) at the front end of the temperature and pressure reducing device (14) is provided with a superheater outlet temperature detection (11), a superheater outlet pressure detection (12) and a superheater outlet flow detection (13) which are used for detecting the temperature, the pressure and the flow of superheated steam flowing into the tube bundle type steam superheater outlet pipe (23) from the tube bundle type steam superheater (2) on line; the output ends of the superheater inlet temperature detection (8), the superheater inlet pressure detection (9), the superheater inlet flow detection (10), the superheater outlet temperature detection (11), the superheater outlet pressure detection (12) and the superheater outlet flow detection (13) are respectively connected with the input end of the editable logic controller (27).
7. The apparatus for steam staged stable superheating utilizing unsteady state flue gas according to claim 5, wherein: the tube bundle type steam superheater outlet pipe (23) at the rear end of the temperature and pressure reducing device (14) is communicated with an electric superheater bypass pipe (26), and the electric superheater (15) is connected with the electric superheater bypass pipe (26) in parallel through an electric superheater inlet pipe (24) and an electric superheater outlet pipe (25); a first electromagnetic valve for controlling the on-off of the electric superheater inlet pipe (24) is arranged at one end, close to the electric superheater bypass pipe (26), of the electric superheater inlet pipe (24), a second electromagnetic valve for controlling the on-off of the electric superheater outlet pipe (25) is arranged at one end, close to the electric superheater bypass pipe (26), of the electric superheater outlet pipe (25), and a third electromagnetic valve for controlling the on-off of the electric superheater bypass pipe (26) is arranged at one end, close to the electric superheater inlet pipe (24), of the electric superheater bypass pipe (26); the controlled ends of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected with the output end of the editable logic controller (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396386.1U CN218954864U (en) | 2022-12-19 | 2022-12-19 | Device for carrying out steam grading stable overheating by using unsteady state flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223396386.1U CN218954864U (en) | 2022-12-19 | 2022-12-19 | Device for carrying out steam grading stable overheating by using unsteady state flue gas |
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| CN218954864U true CN218954864U (en) | 2023-05-02 |
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| CN202223396386.1U Active CN218954864U (en) | 2022-12-19 | 2022-12-19 | Device for carrying out steam grading stable overheating by using unsteady state flue gas |
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