CN216047715U - Drainage regulation control system of air preheater in waste incineration industry - Google Patents
Drainage regulation control system of air preheater in waste incineration industry Download PDFInfo
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- CN216047715U CN216047715U CN202122737815.6U CN202122737815U CN216047715U CN 216047715 U CN216047715 U CN 216047715U CN 202122737815 U CN202122737815 U CN 202122737815U CN 216047715 U CN216047715 U CN 216047715U
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 21
- 238000004056 waste incineration Methods 0.000 title claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 49
- 230000001276 controlling effect Effects 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to the technical field of waste incineration power generation, in particular to a drainage regulation control system of an air preheater in the waste incineration industry; the steam trap set arranged on the high-pressure side of the air preheater is used for blocking steam and draining the hydrophobic medium in the air preheater, so that the steam in the hydrophobic medium is returned to the high-pressure steam side of the air preheater, the high-pressure steam side of the air preheater is ensured to be always kept at high pressure and high temperature, meanwhile, a back-stroke system is ensured to be free of steam, the water attack and cavitation phenomena caused by the back-stroke hydrophobic steam are eliminated, and the smoothness of drainage is ensured; the arranged regulating valve group controls the flow of the hydrophobic medium in the pipeline by controlling the opening and closing degree of the electric regulating valve; the front end of the drainage system is ensured to maintain high pressure, and the rear end of the drainage system is ensured to maintain low pressure; the primary air temperature is improved, the heat exchange efficiency is improved, and the drainage smoothness of the system is ensured, so that the technical problem that the traditional drainage regulation control system cannot regulate the drainage quantity and the pressure in the pipe is solved.
Description
Technical Field
The utility model relates to the technical field of waste incineration power generation, in particular to a drainage regulation control system of an air preheater in the waste incineration industry.
Background
In the waste incineration power generation project, the air preheater is a device for realizing specific hot air temperature by adopting heat exchange between air and steam, and the steam for heat exchange mainly comes from steam drum steam and steam extraction of a steam turbine; when the air preheater works, external steam flows into the compression element of the air preheater, and cold air exchanges heat with the outside of the compression element to form primary hot air; because the reason of hydrophobic saturation temperature, the low pressure side plays preliminary promotion effect to the wind temperature of wind, and the high pressure side has played main promotion and effect up to standard to wind temperature, so the regulation and the control of high pressure side drainage system have played decisive action to whole air preheater system.
The existing drainage regulation control system cannot regulate the drainage quantity and the pressure in the pipe, so that drainage is not smooth, a water hammer of a drainage pipeline is caused, the primary air temperature of the air preheater is further influenced, the design requirement cannot be met, the heat exchange efficiency is reduced, and the power generation benefit is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a drainage regulation control system of an air preheater in the waste incineration industry, so as to solve the technical problem that the existing drainage regulation system cannot regulate the drainage quantity and the pressure in a pipe, and the drainage regulation control system comprises: a drain valve bank and an adjusting valve bank; the drain valve group is arranged on the high-pressure drain side of the air preheater; the regulating valve group is arranged at the downstream of the drainage valve group; the drain valve group and the regulating valve group are both arranged on a water outlet pipeline of the air preheater.
Further, the trap valve block includes: a drain valve and a drain stop valve group; the drain valve is used for blocking steam and draining water from the hydrophobic medium of the air preheater.
Further, the hydrophobic stop valve group comprises: a pair of drain service stop valves and drain bypass stop valves; the drainage maintenance stop valves are respectively arranged at the water inlet end and the water outlet end of the drainage valve; the drain overhauling stop valve is used for opening to enable a drain medium to flow to the drain bypass pipeline when the drain valve is overhauled; the drainage bypass stop valve is arranged on the drainage bypass pipeline.
Further, the regulating valve group comprises: the electric regulating valve and the regulating stop valve group; the electric regulating valve is used for regulating the flow and pressure of the hydrophobic medium in the water outlet pipeline.
Further, the regulating stop valve group comprises: a pair of adjusting maintenance stop valves and adjusting bypass stop valves; the adjusting maintenance stop valves are respectively arranged at the water inlet end and the water outlet end of the electric adjusting valve; the adjusting and overhauling stop valve is used for opening the drain medium to flow to the adjusting bypass pipeline when the electric adjusting valve is overhauled; the adjusting bypass stop valve is arranged on the adjusting bypass pipeline.
Further, the air preheater drainage regulation control system further comprises: a control module; the control module is electrically connected with an electric regulating valve in the regulating valve group; the control module is suitable for controlling the opening degree of the electric regulating valve so as to regulate the flow and the pressure of the hydrophobic medium in the water outlet pipeline.
Further, the control module is electrically connected with a drainage bypass stop valve in the drainage valve bank; the control module is suitable for controlling the opening degree of the drainage bypass stop valve so as to adjust the pressure in the water outlet pipeline.
Furthermore, the control module is respectively connected with a first sensor assembly which is arranged in the water outlet pipeline and is positioned at the upstream of the drain valve group; and a second sensor assembly located between the trap valve set and the regulating valve set; the third sensor assembly is positioned at the downstream of the regulating valve group and is electrically connected with the third sensor assembly; the control module is suitable for receiving detection data of each sensor assembly and controlling the opening and closing degree of the electric regulating valve and/or the drainage bypass stop valve according to the detection data.
Further, the first sensor assembly is adapted to detect the temperature and pressure within the air preheater to the interior of the drain line of the trap stack section; the second sensor assembly is suitable for detecting the temperature and pressure in the water outlet pipeline from the drain valve group to the regulating valve group section; and the third sensor assembly is suitable for detecting the temperature and the pressure in the pipe from the regulating valve group to the water outlet pipeline of the next-level system.
The steam trap group arranged on the high-pressure side of the air preheater is used for blocking steam and draining the hydrophobic medium in the air preheater, so that the steam in the hydrophobic medium returns to the high-pressure steam side of the air preheater, the high-pressure steam side of the air preheater is ensured to always keep high pressure and high temperature, meanwhile, a back-pass system is ensured to be free of steam, the phenomena of water attack and steam corrosion caused by the fact that the back-pass hydrophobic contains steam are eliminated, and the smoothness of drainage is ensured; the arranged regulating valve group controls the flow of the hydrophobic medium in the pipeline by controlling the opening and closing degree of the electric regulating valve; the front end of the drainage system is ensured to maintain high pressure, and the rear end of the drainage system is ensured to maintain low pressure; the primary air temperature is improved, the heat exchange efficiency is improved, and the drainage smoothness of the system is ensured, so that the technical problem that the traditional drainage regulation control system cannot regulate the drainage quantity and the pressure in the pipe is solved.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a drainage regulation control system of an air preheater in the waste incineration industry;
FIG. 2 is a working schematic diagram of the drainage regulation control system of the air preheater in the waste incineration industry.
In the figure: the device comprises a trap valve group 1, a trap valve 11, a trap overhaul stop valve 12, a trap bypass stop valve 13, a regulating valve group 2, an electric regulating valve 21, a regulating overhaul stop valve 22, a regulating bypass stop valve 23, a first sensor assembly 31, a second sensor assembly 32 and a third sensor assembly 33.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Examples
As shown in fig. 1 and fig. 2, the present embodiment provides a drainage regulation control system for an air preheater in a waste incineration industry, including: a drain valve group 1 and an adjusting valve group 2; the drain valve group 1 is arranged on the high-pressure drain side of the air preheater; the regulating valve group 2 is arranged at the downstream of the drainage valve group 1; the drain valve group 1 and the regulating valve group 2 are both arranged on a water outlet pipeline of the air preheater.
In the embodiment, optionally, the drainage valve group 1 arranged on the high-pressure side of the air preheater is used for blocking steam and draining water for the drainage medium in the air preheater, so that steam in the drainage medium returns to the high-pressure steam side of the air preheater, the high-pressure steam side of the air preheater is ensured to be always kept at high pressure and high temperature, meanwhile, a back-end system is ensured to be free of steam, water attack and cavitation caused by the back-end drained water containing steam are eliminated, and the smoothness of drainage is ensured; the arranged regulating valve group 2 controls the flow of the hydrophobic medium in the pipeline by controlling the opening degree of the electric regulating valve; the front end of the drainage system is ensured to maintain high pressure, and the rear end of the drainage system is ensured to maintain low pressure; the primary air temperature is improved, the heat exchange efficiency is improved, and the drainage smoothness of the system is ensured, so that the technical problem that the traditional drainage regulation control system cannot regulate the drainage quantity and the pressure in the pipe is solved.
In this embodiment, the trap valve group 1 includes: a drain valve 11 and a drain stop valve group; the trap 11 is used to trap the hydrophobic medium from the air preheater.
In the embodiment, optionally, the steam trap 11 has the functions of blocking steam and draining water, so that the steam blocking and draining treatment is performed on the hydrophobic medium from the air preheater, and the steam is returned to the air preheater, thereby ensuring that the air preheater can fully exchange heat, ensuring that the steam does not exist in the hydrophobic medium flowing to the next stage, ensuring smooth drainage of the later stage, and effectively preventing water hammer and cavitation caused by the steam contained in the hydrophobic medium.
In this embodiment, the hydrophobic stop valve group includes: a pair of drain service shut-off valves 12 and a drain bypass shut-off valve 13; the drainage maintenance stop valves 12 are respectively arranged at the water inlet end and the water outlet end of the drainage valve 11; the drainage maintenance stop valve 12 is used for opening to enable a drainage medium to flow to a drainage bypass pipeline when the drainage valve 11 is maintained; the drain bypass stop valve 13 is arranged on the drain bypass pipeline.
In this embodiment, optionally, the drainage maintenance stop valves 12 are respectively disposed at the water inlet end and the water outlet end of the drainage valve 11, so that when the drainage valve 11 needs to be maintained, the drainage maintenance stop valves 12 are closed to allow a drainage medium to flow to the drainage bypass pipeline; and further realize the online maintenance without shutdown.
In this embodiment, a drain bypass cut-off valve 13 provided in the drain bypass line may be optionally adjusted for drain control when the drain valve 11 is maintained and repaired.
In the present embodiment, the regulating valve group 2 comprises: an electric regulating valve 21 and a regulating stop valve group; the electric control valve 21 is used for adjusting the flow of the hydrophobic medium in the water outlet pipeline.
In this embodiment, optionally, the electric control valve 21 performs flow and pressure regulation control on the drain water in the pipeline, and can perform regulation control according to the system operation requirement, when the heating temperature of the air preheater is insufficient, the opening degree of the electric control valve 21 can be reduced to increase the pressure in the pipeline, so as to increase the heating temperature of the air preheater, otherwise, the opening degree of the electric control valve 21 is increased to decrease the pressure in the pipeline, so as to decrease the heating temperature of the air preheater.
In this embodiment, the regulating stop valve group includes: a pair of adjustment maintenance stop valves 22 and an adjustment bypass stop valve 23; the adjusting maintenance stop valves 22 are respectively arranged at the water inlet end and the water outlet end of the electric adjusting valve 21; the adjusting and overhauling stop valve 22 is used for opening the hydrophobic medium to flow to the adjusting bypass pipeline when the electric adjusting valve 21 is overhauled; the regulating bypass cut-off valve 23 is arranged on the regulating bypass pipeline.
In this embodiment, optionally, the adjusting and repairing stop valves are respectively disposed at the water inlet end and the water outlet end of the electric control valve 21, so that when the electric control valve 21 needs to be repaired, the adjusting and repairing stop valve 22 is closed to allow the hydrophobic medium to flow to the hydrophobic bypass pipeline; and further realize the online maintenance without shutdown.
In the present embodiment, optionally, the adjustment bypass cut-off valve 23 provided on the adjustment bypass line may perform the drain adjustment at the time of maintenance and repair of the electric adjustment valve 21.
In this embodiment, the air preheater drainage adjustment control system further includes: a control module; the control module is electrically connected with an electric regulating valve 21 in the regulating valve group 2; wherein the control module is suitable for controlling the opening degree of the electric control valve 21 so as to adjust the flow of the hydrophobic medium in the water outlet pipeline.
In this embodiment, optionally, the control module is a PLC control module, and the control module is electrically connected to the electric control valve 21 to realize online control of the electric control valve 21, so as to control the flow and pressure of the hydrophobic medium in the pipe at any time.
In this embodiment, the control module is electrically connected to a drain bypass cut-off valve 13 in the drain valve bank 1; wherein the control module is adapted to control the opening degree of the drain bypass cut-off valve 13, thereby adjusting the pressure in the pipe of the water outlet pipeline.
In this embodiment, optionally, the control module is electrically connected to the drain bypass cut-off valve 13, so as to realize online control of the drain bypass cut-off valve 13, and adjust the steam pressure and the steam temperature at the air preheater end at any time.
In this embodiment, the control module is respectively connected to a first sensor assembly 31 disposed in the water outlet pipeline and located upstream of the trap valve group 1; and a second sensor assembly 32 located between the trap valve group 1 and the regulating valve group 2; and a third sensor assembly 33 located downstream of the regulating valve group 2; wherein the control module is suitable for receiving detection data of each sensor component and controlling the opening degree of the electric regulating valve 21 and/or the drainage bypass stop valve 13 according to the detection data.
In this embodiment, optionally, the sensor assembly includes: temperature sensors and pressure sensors.
In this embodiment, the first sensor assembly 31 is adapted to detect the temperature and pressure in the air preheater to the outlet line of section 1 of the trap group; the second sensor assembly 32 is adapted to detect the temperature and pressure in the pipes in the outlet pipes of the sections from the trap valve block 1 to the regulating valve block 2; the third sensor assembly 33 is adapted to detect the temperature and pressure in the pipe from the regulating valve group 2 to the outlet line of the next stage system.
In this embodiment, optionally, the first sensor assembly 31 is adapted to detect the temperature and pressure of the hydrophobic medium flowing out of the air preheater, and upload the detected data to the control module, and when the monitored data is smaller than a set threshold, it is proved that the heating temperature of the air preheater does not reach a preset value, and at this time, the control module controls the electric control valve 21 to decrease the opening degree, so as to increase the pressure in the pipe;
the second sensor assembly 32 is suitable for detecting the temperature and pressure of the hydrophobic medium subjected to steam blocking and water draining by the hydrophobic valve group 1, and uploading detection data to the control module, when the detection data is smaller than a set threshold value, the hydrophobic efficiency of the hydrophobic valve group 1 is proved to be reduced, and at the moment, the control module controls the hydrophobic bypass stop valve 13 to reduce the opening degree, so that the hydrophobic medium completely flows through the hydrophobic valve 11 to block steam;
the third sensor assembly 33 is suitable for detecting the temperature and pressure of the hydrophobic medium after the water pressure adjustment is carried out by the regulating valve group 2, and uploading detection data to the control module, when the detection data is smaller than a set threshold value, the regulation efficiency of the regulating valve group 2 is proved to be insufficient, the water pressure at the rear end is reduced, and at the moment, the control module controls the electric regulating valve 21 to reduce the opening degree, so that the pressure in the pipe is increased.
In conclusion, the drainage valve group 1 arranged on the high-pressure side of the air preheater is used for blocking steam and draining the drainage medium in the air preheater, so that the steam in the drainage medium returns to the high-pressure steam side of the air preheater, the high-pressure steam side of the air preheater is ensured to be always kept at high pressure and high temperature, meanwhile, a back-pass system is ensured to be free of steam, the phenomena of water attack and steam corrosion caused by the back-pass hydrophobic steam are eliminated, and the smoothness of drainage is ensured; the arranged regulating valve group 2 controls the flow of the hydrophobic medium in the pipeline by controlling the opening and closing degree of the electric regulating valve 21; the front end of the drainage system is ensured to maintain high pressure, and the rear end of the drainage system is ensured to maintain low pressure; the primary air temperature is improved, the heat exchange efficiency is improved, and the drainage smoothness of the system is ensured, so that the technical problem that the traditional drainage regulation control system cannot regulate the drainage quantity and the pressure in the pipe is solved.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a hydrophobic regulation control system of waste incineration trade air preheater which characterized in that includes:
a drain valve bank and an adjusting valve bank;
the drain valve group is arranged on the high-pressure drain side of the air preheater;
the regulating valve group is arranged at the downstream of the drainage valve group; wherein
The drain valve group and the regulating valve group are both arranged on a water outlet pipeline of the air preheater.
2. The air pre-heater hydrophobic adjustment control system of claim 1,
the trap valve group includes: a drain valve and a drain stop valve group;
the drain valve is used for blocking steam and draining water from the hydrophobic medium of the air preheater.
3. The air pre-heater hydrophobic adjustment control system of claim 2,
the hydrophobic stop valve group comprises: a pair of drain service stop valves and drain bypass stop valves;
the drainage maintenance stop valves are respectively arranged at the water inlet end and the water outlet end of the drainage valve; wherein
The drainage maintenance stop valve is used for opening a drainage medium to flow to the drainage bypass pipeline when the drainage valve is maintained;
the drainage bypass stop valve is arranged on the drainage bypass pipeline.
4. The air pre-heater hydrophobic adjustment control system of claim 1,
the regulating valve group comprises: the electric regulating valve and the regulating stop valve group;
the electric regulating valve is used for regulating the flow and pressure of the hydrophobic medium in the water outlet pipeline.
5. The air pre-heater hydrophobic adjustment control system of claim 4,
the regulating stop valve group comprises: a pair of adjusting maintenance stop valves and adjusting bypass stop valves;
the adjusting maintenance stop valves are respectively arranged at the water inlet end and the water outlet end of the electric adjusting valve; wherein
The adjusting and overhauling stop valve is used for opening the drain medium to flow to the adjusting bypass pipeline when the electric adjusting valve is overhauled;
the adjusting bypass stop valve is arranged on the adjusting bypass pipeline.
6. The air preheater hydrophobic adjustment control system of claim 1, further comprising:
a control module;
the control module is electrically connected with an electric regulating valve in the regulating valve group; wherein
The control module is suitable for controlling the opening and closing degree of the electric regulating valve so as to regulate the flow and pressure of the hydrophobic medium in the water outlet pipeline.
7. The air pre-heater hydrophobic adjustment control system of claim 6,
the control module is electrically connected with a drainage bypass stop valve in the drainage valve bank; wherein
The control module is suitable for controlling the opening and closing degree of the drainage bypass stop valve, so that the pressure in the pipe of the water outlet pipeline is adjusted.
8. The air pre-heater hydrophobic adjustment control system of claim 6,
the control module is respectively connected with a first sensor assembly which is arranged in the water outlet pipeline and is positioned at the upstream of the drain valve group; and
the second sensor assembly is positioned between the drainage valve group and the regulating valve group; and
the third sensor assembly positioned at the downstream of the regulating valve group is electrically connected; wherein
The control module is suitable for receiving detection data of each sensor assembly and controlling the opening and closing degree of the electric regulating valve and/or the drainage bypass stop valve according to the detection data.
9. The air pre-heater hydrophobic adjustment control system of claim 8,
the first sensor assembly is suitable for detecting the temperature and pressure in the pipe from the air preheater to the water outlet pipeline of the steam trap block section;
the second sensor assembly is suitable for detecting the temperature and pressure in the water outlet pipeline from the drain valve group to the regulating valve group section;
and the third sensor assembly is suitable for detecting the temperature and the pressure in the pipe from the regulating valve group to the water outlet pipeline of the next-level system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122737815.6U CN216047715U (en) | 2021-11-09 | 2021-11-09 | Drainage regulation control system of air preheater in waste incineration industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122737815.6U CN216047715U (en) | 2021-11-09 | 2021-11-09 | Drainage regulation control system of air preheater in waste incineration industry |
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| Publication Number | Publication Date |
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| CN216047715U true CN216047715U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122737815.6U Active CN216047715U (en) | 2021-11-09 | 2021-11-09 | Drainage regulation control system of air preheater in waste incineration industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892719A (en) * | 2023-07-07 | 2023-10-17 | 西安热工研究院有限公司 | New control device for bypass dewatering of thermal power units based on bypass automatic pipe heating technology |
-
2021
- 2021-11-09 CN CN202122737815.6U patent/CN216047715U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892719A (en) * | 2023-07-07 | 2023-10-17 | 西安热工研究院有限公司 | New control device for bypass dewatering of thermal power units based on bypass automatic pipe heating technology |
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