CN113417707B - Quick starting system of circulation combined unit - Google Patents
Quick starting system of circulation combined unit Download PDFInfo
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- CN113417707B CN113417707B CN202110771403.6A CN202110771403A CN113417707B CN 113417707 B CN113417707 B CN 113417707B CN 202110771403 A CN202110771403 A CN 202110771403A CN 113417707 B CN113417707 B CN 113417707B
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- 239000005871 repellent Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/105—Final actuators by passing part of the fluid
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a quick starting system of a circulating combined unit, and relates to the field of generator units. The quick starting system of the circulating combined unit comprises a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder, a high-pressure main steam pipeline is provided with a high-pressure steam-relief point, the high-pressure steam-relief point is positioned on the steam inlet side of a high-pressure main steam valve and is close to the high-pressure main steam valve, a medium-pressure steam inlet point is arranged on the medium-pressure main steam pipeline and is positioned on the steam inlet side of the medium-pressure main steam valve and is far from the medium-pressure main steam valve, and a first serial branch is connected between the high-pressure steam-relief point and the medium-pressure steam inlet point; the medium-pressure main steam pipeline is provided with a medium-pressure steam-relief point, the medium-pressure steam-relief point is positioned on the steam inlet side of the medium-pressure main steam valve and is close to the medium-pressure main steam valve, the low-pressure main steam pipeline is provided with a low-pressure steam inlet point, the low-pressure steam inlet point is positioned on the steam inlet side of the low-pressure main steam valve, and a second serial branch is connected between the medium-pressure steam-relief point and the medium-pressure steam inlet point; the low-pressure main steam pipeline is connected with a low-pressure drain pipeline, and the other end of the low-pressure drain pipeline is connected with a condenser or a drain flash tank.
Description
Technical Field
The invention relates to the technical field of generator sets, in particular to a quick starting system of a circulating combined set.
Background
As an advanced power generation technology, the gas-steam combined cycle generator set has the characteristics of high power generation efficiency, small pollution emission and the like. The working principle is as follows: the fuel combustion drives the gas turbine to generate electricity, tail gas exhausted by the gas turbine enters the waste heat boiler again, and the steam turbine is driven to generate electricity by heating water vapor, so that the purpose of combined power generation of the gas turbine and the steam turbine is realized.
At present, part of the gas-steam combined cycle units play the role of peak shaving units, and the units are required to be started quickly. Before the gas-steam combined cycle unit is started, a heating pipe is realized by using a high-pressure steam bypass valve, a medium-pressure steam bypass valve and a low-pressure steam bypass valve, but the high-pressure steam bypass valve, the medium-pressure steam bypass valve and the low-pressure steam bypass valve are still a certain distance away from the corresponding main steam valve, the main steam valve is in a closed state before the gas-steam combined cycle unit is started, and a pipeline between the bypass valve and the main steam valve is in a state that steam does not circulate, namely belongs to a dead end, so that the starting speed of the unit is greatly prolonged.
In summary, in the prior art, the steam bypass valve is used for heating pipes, and because the pipeline steam at the front end of the main steam valve does not circulate, the actual preheating effect is poor, and the starting speed of the unit is low.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a quick starting system of a circulating combined unit, which is used for solving the problems of poor actual preheating effect and low starting speed of the unit due to the fact that steam in a pipeline at the front end of a main steam valve does not circulate when a steam bypass valve is used for heating pipes.
The technical scheme of the quick start system of the circulating combined unit is as follows:
The quick starting system of the circulating combined unit comprises a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder, wherein the high-pressure cylinder is connected with a high-pressure main steam pipeline, a high-pressure main steam valve is arranged on the high-pressure main steam pipeline, the medium-pressure cylinder is connected with a medium-pressure main steam pipeline, a medium-pressure main steam valve is arranged on the medium-pressure main steam pipeline, the low-pressure cylinder is connected with a low-pressure main steam pipeline, and a low-pressure main steam valve is arranged on the low-pressure main steam pipeline;
the high-pressure main steam pipeline is provided with a high-pressure steam-dredging point, the high-pressure steam-dredging point is positioned on the steam inlet side of the high-pressure main steam valve and is close to the high-pressure main steam valve, the medium-pressure main steam pipeline is provided with a medium-pressure steam inlet point, the medium-pressure steam inlet point is positioned on the steam inlet side of the medium-pressure main steam valve and is far away from the medium-pressure main steam valve, and a first serial branch is connected between the high-pressure steam-dredging point and the medium-pressure steam inlet point;
The medium-pressure main steam pipeline is provided with a medium-pressure steam-dredging point, the medium-pressure steam-dredging point is positioned at the steam inlet side of the medium-pressure main steam valve and is close to the medium-pressure main steam valve, the low-pressure main steam pipeline is provided with a low-pressure steam inlet point, the low-pressure steam inlet point is positioned at the steam inlet side of the low-pressure main steam valve, and a second serial branch is connected between the medium-pressure steam-dredging point and the medium-pressure steam inlet point; the low-pressure main steam pipeline is connected with a low-pressure drain pipeline, and the other end of the low-pressure drain pipeline is connected with a condenser or a drain flash tank.
Further, the low-pressure steam inlet point is arranged at a position, far away from the low-pressure main steam valve, of the low-pressure main steam pipeline, a low-pressure steam-repellent point is arranged on the low-pressure main steam pipeline, the low-pressure steam-repellent point is close to the steam inlet side of the low-pressure main steam valve and is close to the low-pressure main steam valve, and the low-pressure steam-repellent pipeline is connected to the low-pressure steam-repellent point.
Further, a low-pressure shutoff valve and a low-pressure steam trap valve are arranged on the low-pressure drain pipeline.
Further, a first shut-off valve and a first orifice plate are arranged on the first serial branch, and a second shut-off valve and a second orifice plate are arranged on the second serial branch; or the first series branch is provided with a first shutoff valve and a first regulating valve, and the second series branch is provided with a second shutoff valve and a second regulating valve.
Further, the pipe diameter of the first serial branch is smaller than the pipe diameter of the high-pressure main steam pipeline and smaller than the pipe diameter of the medium-pressure main steam pipeline, and the pipe diameter of the second serial branch is smaller than the pipe diameter of the medium-pressure main steam pipeline and smaller than the pipe diameter of the low-pressure main steam pipeline.
Further, the pipe diameter of the first serial branch is smaller than one half of the pipe diameter of the high-pressure main steam pipeline and smaller than one half of the pipe diameter of the medium-pressure main steam pipeline, and the pipe diameter of the second serial branch is smaller than one half of the pipe diameter of the medium-pressure main steam pipeline and smaller than one half of the pipe diameter of the low-pressure main steam pipeline.
Further, the steam discharging direction of the high-pressure steam discharging point is perpendicular to the length extending direction of the high-pressure main steam pipeline, the steam inlet direction of the medium-pressure steam discharging point and the steam discharging direction of the medium-pressure steam discharging point are perpendicular to the length extending direction of the medium-pressure main steam pipeline, and the steam inlet direction of the low-pressure steam inlet point is perpendicular to the length extending direction of the low-pressure main steam pipeline.
Further, the high-pressure steam-thinning point is located at the top of the high-pressure main steam pipeline, the medium-pressure steam inlet point and the medium-pressure steam-thinning point are both located at the top of the medium-pressure main steam pipeline, and the low-pressure steam inlet point is located at the top of the low-pressure main steam pipeline.
Further, the high-pressure steam-thinning point is located on the side face of the high-pressure main steam pipeline, the medium-pressure steam-inlet point and the medium-pressure steam-thinning point are both located on the side face of the medium-pressure main steam pipeline, and the low-pressure steam-inlet point is located on the side face of the low-pressure main steam pipeline.
The beneficial effects are that: the quick starting system of the circulating combined unit adopts a first serial branch connected between a high-pressure steam-thinning point of a high-pressure main steam pipeline and a medium-pressure steam inlet point of a medium-pressure main steam pipeline, a second serial branch is connected between the medium-pressure steam-thinning point of the medium-pressure main steam pipeline and a low-pressure steam inlet point of a low-pressure main steam pipeline, the low-pressure main steam pipeline is connected with a low-pressure steam-thinning pipeline, low-temperature steam close to a high-pressure main steam valve position of the high-pressure main steam pipeline is communicated into the medium-pressure main steam pipeline through the first serial branch, then the low-temperature steam close to the medium-pressure main steam valve position of the medium-pressure main steam pipeline is communicated into the low-pressure main steam pipeline through the second serial branch, and finally the low-temperature steam collected by the three main steam pipelines is uniformly discharged through the low-pressure water pipeline.
The quick starting system of the whole circulation combined unit utilizes the first serial branch and the second serial branch, a high-middle-low stepped steam-dredging channel is formed among the high-pressure main steam pipeline, the middle-pressure main steam pipeline and the low-pressure main steam pipeline, the steam-dredging pipeline structure is simpler, low-temperature steam at the front end of the main steam valve can be fully discharged, pipeline steam circulation at the front end of the main steam valve is realized, the actual pre-heating effect is better, and the starting speed of the unit is high.
Drawings
FIG. 1 is a schematic diagram of a fast start system of a circulating complex in an embodiment of the fast start system of a circulating complex of the present invention.
In the figure: 1-high pressure cylinder, 10-high pressure main steam pipeline, 11-high pressure main steam valve, 12-first serial branch, 13-first shutoff valve and 14-first orifice plate;
2-medium pressure cylinder, 20-medium pressure main steam pipeline, 21-medium pressure main steam valve, 22-second serial branch, 23-second shutoff valve and 24-second orifice plate;
3-low pressure cylinder, 30-low pressure main steam pipeline, 31-low pressure main steam valve, 32-low pressure drain pipeline, 33-low pressure shutoff valve, 34-low pressure drain valve, 4-condenser.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the embodiment 1 of the quick start system of the circulation combined unit, as shown in fig. 1, the quick start system of the circulation combined unit comprises a high-pressure cylinder 1, a medium-pressure cylinder 2 and a low-pressure cylinder 3, wherein the high-pressure cylinder 1 is connected with a high-pressure main steam pipeline 10, the high-pressure main steam pipeline 10 is provided with a high-pressure main steam valve 11, the medium-pressure cylinder 2 is connected with a medium-pressure main steam pipeline 20, the medium-pressure main steam pipeline 20 is provided with a medium-pressure main steam valve 21, the low-pressure cylinder 3 is connected with a low-pressure main steam pipeline 30, and the low-pressure main steam pipeline 30 is provided with a low-pressure main steam valve 31.
The high-pressure main steam pipeline 10 is provided with a high-pressure steam-relief point, the high-pressure steam-relief point is positioned on the steam inlet side of the high-pressure main steam valve 11 and is close to the high-pressure main steam valve 11, the medium-pressure main steam pipeline 20 is provided with a medium-pressure steam inlet point, the medium-pressure steam inlet point is positioned on the steam inlet side of the medium-pressure main steam valve 21 and is far from the medium-pressure main steam valve 21, and a first serial branch 12 is connected between the high-pressure steam-relief point and the medium-pressure steam inlet point; the medium-pressure main steam pipeline 20 is provided with a medium-pressure steam-relief point, the medium-pressure steam-relief point is positioned on the steam inlet side of the medium-pressure main steam valve 21 and is close to the medium-pressure main steam valve 21, the low-pressure main steam pipeline 30 is provided with a low-pressure steam inlet point, the low-pressure steam inlet point is positioned on the steam inlet side of the low-pressure main steam valve 31, and a second serial branch 22 is connected between the medium-pressure steam-relief point and the medium-pressure steam inlet point; the low-pressure main steam pipeline 30 is connected with a low-pressure drain pipeline 32, and the other end of the low-pressure drain pipeline 32 is connected with a condenser 4 or a drain flash tank.
The quick starting system of the circulation combined unit adopts a first serial branch 12 connected between a high-pressure steam-thinning point of a high-pressure main steam pipeline 10 and a medium-pressure steam-feeding point of a medium-pressure main steam pipeline 20, a second serial branch 22 connected between the medium-pressure steam-thinning point of the medium-pressure main steam pipeline 20 and a low-pressure steam-feeding point of a low-pressure main steam pipeline 30, the low-pressure main steam pipeline 30 is connected with a low-pressure steam-thinning pipeline 32, low-temperature steam at the position, close to a high-pressure main steam valve 11, of the high-pressure main steam pipeline 10 is communicated into the medium-pressure main steam pipeline 20 through the first serial branch 12, low-temperature steam at the position, close to the medium-pressure main steam valve 21, of the medium-pressure main steam pipeline 20 is communicated into the low-pressure main steam pipeline 30 through the second serial branch 22, and finally the low-temperature steam collected by the three main steam pipelines is uniformly discharged through the low-pressure water pipeline 32.
The quick starting system of the whole circulation combined unit utilizes the first serial branch 12 and the second serial branch 22, a high-medium-low stepped steam-dredging channel is formed among the high-pressure main steam pipeline 10, the medium-pressure main steam pipeline 20 and the low-pressure main steam pipeline 30, the steam-dredging pipeline is simpler in structure, low-temperature steam at the front end of the main steam valve can be fully discharged, pipeline steam circulation at the front end of the main steam valve is realized, the actual pre-heating effect is better, and the starting speed of the unit is high.
In this embodiment, the low pressure steam inlet point is disposed at a position of the low pressure main steam line far from the low pressure main steam valve 31, the low pressure main steam line 30 is provided with a low pressure steam drain point, the low pressure steam drain point is located near the steam inlet side of the low pressure main steam valve 31 and near the low pressure main steam valve 31, and the low pressure steam drain line 32 is connected to the low pressure steam drain point. The low-pressure drain pipe 32 is provided with a low-pressure shut-off valve 33 and a low-pressure drain valve 34, and after the pressure is reduced by the first serial branch 12 and the second serial branch 22, the energy of the steam is released to become liquid water, and the low-pressure shut-off valve 33 and the low-pressure drain valve 34 are opened during pre-heating to discharge the water vapor collected in the low-pressure main steam pipe 30 to realize a heating pipe.
Wherein, a first shut-off valve 13 and a first orifice plate 14 are arranged on the first serial branch 12, and a second shut-off valve 23 and a second orifice plate 24 are arranged on the second serial branch 22; or the first series branch 12 is provided with a first shut-off valve 13 and a first regulating valve, and the second series branch 22 is provided with a second shut-off valve 23 and a second regulating valve. The first serial branch 12 is controlled to be turned on or off through the first shutoff valve 13, a first-stage steam-dredging channel is formed between the high-pressure main steam pipeline 10 and the medium-pressure main steam pipeline 20, and high-pressure steam is depressurized and discharged into the medium-pressure main steam pipeline 20 through the first orifice plate 14; the second series branch 22 is controlled to be turned on or off by the second shutoff valve 23, a secondary steam-repellent passage is formed between the medium-pressure main steam pipeline 20 and the low-pressure main steam pipeline 30, and medium-pressure steam is depressurized and discharged into the low-pressure main steam pipeline 30 through the second orifice plate 24.
To facilitate the pipe arrangement of the series branches, the pipe diameter of the first series branch 12 is smaller than the pipe diameter of the high-pressure main steam pipe 10 and smaller than the pipe diameter of the medium-pressure main steam pipe 20, and the pipe diameter of the second series branch 22 is smaller than the pipe diameter of the medium-pressure main steam pipe 20 and smaller than the pipe diameter of the low-pressure main steam pipe 30. Specifically, the pipe diameter of the first serial branch 12 is smaller than one half of the pipe diameter of the high-pressure main steam pipeline 10 and smaller than one half of the pipe diameter of the medium-pressure main steam pipeline 20, and the pipe diameter of the second serial branch 22 is smaller than one half of the pipe diameter of the medium-pressure main steam pipeline 20 and smaller than one half of the pipe diameter of the low-pressure main steam pipeline 30. The serial branch is designed to have a pipe diameter smaller than half of that of the main steam pipeline, so that the requirements of steam-repellent capacity from high pressure to medium pressure and from medium pressure to low pressure can be met.
In this embodiment, the steam discharging direction of the high-pressure steam-discharging point is perpendicular to the length extending direction of the high-pressure main steam pipeline 10, the steam inlet direction of the medium-pressure steam-discharging point and the steam discharging direction of the medium-pressure steam-discharging point are perpendicular to the length extending direction of the medium-pressure main steam pipeline 20, and the steam inlet direction of the low-pressure steam-inlet point is perpendicular to the length extending direction of the low-pressure main steam pipeline 30. Moreover, the high pressure steam trap is located at the top of the high pressure main steam line 10, the medium pressure steam inlet and the medium pressure steam trap are both located at the top of the medium pressure main steam line 20, and the low pressure steam inlet is located at the top of the low pressure main steam line 30. The steam-repellent direction of the steam-repellent point of the series branch is vertically arranged at the top of the main steam pipeline, the steam-inlet direction of the steam-inlet point of the series branch is vertically arranged at the top of the main steam pipeline, interference between the series branch and the main steam pipeline is avoided, the branch pipe arrangement is more orderly and clear, and the on-off of the pipeline is controlled during subsequent preheating.
In other embodiments, in order to meet different use demands, steam-repellent points and steam-inlet points can be vertically arranged on the side surface of the main steam pipeline, specifically, high-pressure steam-repellent points are located on the side surface of the high-pressure main steam pipeline, medium-pressure steam-inlet points and medium-pressure steam-repellent points are located on the side surface of the medium-pressure main steam pipeline, low-pressure steam-inlet points are located on the side surface of the low-pressure main steam pipeline, interference between a serial branch and the main steam pipeline can be avoided, and on-off of the pipeline can be controlled conveniently during subsequent pre-heating.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (6)
1. The quick starting system of the circulating combined unit is characterized by comprising a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder, wherein the high-pressure cylinder is connected with a high-pressure main steam pipeline, a high-pressure main steam valve is arranged on the high-pressure main steam pipeline, the medium-pressure cylinder is connected with a medium-pressure main steam pipeline, the medium-pressure main steam pipeline is provided with a medium-pressure main steam valve, the low-pressure cylinder is connected with a low-pressure main steam pipeline, and the low-pressure main steam pipeline is provided with a low-pressure main steam valve;
the high-pressure main steam pipeline is provided with a high-pressure steam-dredging point, the high-pressure steam-dredging point is positioned on the steam inlet side of the high-pressure main steam valve and is close to the high-pressure main steam valve, the medium-pressure main steam pipeline is provided with a medium-pressure steam inlet point, the medium-pressure steam inlet point is positioned on the steam inlet side of the medium-pressure main steam valve and is far away from the medium-pressure main steam valve, and a first serial branch is connected between the high-pressure steam-dredging point and the medium-pressure steam inlet point;
The medium-pressure main steam pipeline is provided with a medium-pressure steam-dredging point, the medium-pressure steam-dredging point is positioned at the steam inlet side of the medium-pressure main steam valve and is close to the medium-pressure main steam valve, the low-pressure main steam pipeline is provided with a low-pressure steam inlet point, the low-pressure steam inlet point is positioned at the steam inlet side of the low-pressure main steam valve, and a second serial branch is connected between the medium-pressure steam-dredging point and the medium-pressure steam inlet point; the low-pressure main steam pipeline is connected with a low-pressure drain pipeline, and the other end of the low-pressure drain pipeline is connected with a condenser or a drain flash tank;
The low-pressure steam inlet point is arranged at a position, far away from the low-pressure main steam valve, of the low-pressure main steam pipeline, a low-pressure steam-repellent point is arranged on the low-pressure main steam pipeline, the low-pressure steam-repellent point is close to the steam inlet side of the low-pressure main steam valve and is close to the low-pressure main steam valve, and the low-pressure steam-repellent pipeline is connected to the low-pressure steam-repellent point;
the pipe diameter of the first serial branch is smaller than the pipe diameter of the high-pressure main steam pipeline and smaller than the pipe diameter of the medium-pressure main steam pipeline, and the pipe diameter of the second serial branch is smaller than the pipe diameter of the medium-pressure main steam pipeline and smaller than the pipe diameter of the low-pressure main steam pipeline;
The pipe diameter of the first serial branch is smaller than one half of the pipe diameter of the high-pressure main steam pipeline and smaller than one half of the pipe diameter of the medium-pressure main steam pipeline, and the pipe diameter of the second serial branch is smaller than one half of the pipe diameter of the medium-pressure main steam pipeline and smaller than one half of the pipe diameter of the low-pressure main steam pipeline.
2. The rapid start system of a circulation complex of claim 1, wherein the low pressure drain line is provided with a low pressure shut-off valve and a low pressure drain valve.
3. The rapid start system of a cycle complex of claim 1, wherein the first series branch is provided with a first shut-off valve and a first orifice plate, and the second series branch is provided with a second shut-off valve and a second orifice plate; or the first series branch is provided with a first shutoff valve and a first regulating valve, and the second series branch is provided with a second shutoff valve and a second regulating valve.
4. The rapid start system of a cycle combination according to claim 1, wherein the steam exhaust direction of the high-pressure steam exhaust point is perpendicular to the length extension direction of the high-pressure main steam pipeline, the steam inlet direction of the medium-pressure steam inlet point and the steam exhaust direction of the medium-pressure steam exhaust point are perpendicular to the length extension direction of the medium-pressure main steam pipeline, and the steam inlet direction of the low-pressure steam inlet point is perpendicular to the length extension direction of the low-pressure main steam pipeline.
5. The rapid start system of a cycle complex of claim 4, wherein the high pressure steam trap is located at a top of the high pressure main steam line, the medium pressure steam inlet and the medium pressure steam trap are both located at a top of the medium pressure main steam line, and the low pressure steam inlet is located at a top of the low pressure main steam line.
6. The rapid start system of a cycle complex of claim 4, wherein the high pressure steam trap is located on a side of the high pressure main steam line, the medium pressure steam inlet and the medium pressure steam trap are both located on a side of the medium pressure main steam line, and the low pressure steam inlet is located on a side of the low pressure main steam line.
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| CN202110771403.6A CN113417707B (en) | 2021-07-07 | 2021-07-07 | Quick starting system of circulation combined unit |
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| CN202110771403.6A CN113417707B (en) | 2021-07-07 | 2021-07-07 | Quick starting system of circulation combined unit |
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| CN215633166U (en) * | 2021-07-07 | 2022-01-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Quick start system of circulation combined unit |
-
2021
- 2021-07-07 CN CN202110771403.6A patent/CN113417707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454038A (en) * | 2014-11-27 | 2015-03-25 | 上海电气电站设备有限公司 | System and method for starting double-reheat stream turbine |
| CN106382615A (en) * | 2016-08-25 | 2017-02-08 | 西安西热控制技术有限公司 | Verification system and method for ultra-supercritical unit multi-time reheat steam temperature control strategy |
| CN207278308U (en) * | 2017-08-11 | 2018-04-27 | 上海电气电站设备有限公司 | Combination circulation steam turbine cold start pre-warming system |
| CN111894683A (en) * | 2020-07-30 | 2020-11-06 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Steam turbine unit air pre-warming quick start control system and method |
| CN215633166U (en) * | 2021-07-07 | 2022-01-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Quick start system of circulation combined unit |
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