CN111749735A - Manual ETS method for centralized control of steam turbine set - Google Patents
Manual ETS method for centralized control of steam turbine set Download PDFInfo
- Publication number
- CN111749735A CN111749735A CN202010524661.XA CN202010524661A CN111749735A CN 111749735 A CN111749735 A CN 111749735A CN 202010524661 A CN202010524661 A CN 202010524661A CN 111749735 A CN111749735 A CN 111749735A
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- Prior art keywords
- valve
- control cabinet
- unit
- centralized control
- oil
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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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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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
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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
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
- F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
- F01D17/26—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical fluid, e.g. hydraulic
Abstract
The invention provides a manual ETS method for centralized control of a turboset, wherein an emergency stop button is newly added on an operation desk of a remote centralized control hall, and an electrical control cabinet is newly added in a centralized control electrical room; an emergency stop button newly added on the operating platform is connected with the control cabinet through a cable, and an emergency stop command is sent to the electrical control cabinet; an electrical control cabinet is additionally arranged in an electrical room of the unit, and the dual-redundancy shutdown electromagnetic valve bank is arranged on the site of the unit and is connected with the control cabinet through a cable; the control cabinet is communicated with the control cabinet of a remote centralized control hall through redundant optical fibers, and an emergency shutdown command issued by the remote centralized control hall acts on the dual-redundant shutdown electromagnetic valve set through the optical fibers; the valve group acts, and the system is stopped; when the unit has a starting condition, a reset button in the electrical control cabinet is manually reset on site, the valve group is reset, and the unit operates normally; after the steam turbine set realizes remote centralized control, the turbine set can still be manually and emergently stopped when the ETS of the turbine set per se fails.
Description
Technical Field
The invention relates to the technical field of manual ETS control of a steam turbine set, in particular to a manual ETS method for centralized control of the steam turbine set.
Background
ETS is a short for turbine trip protection system in the industrial field. The ETS trips the steam turbine and closes all steam inlet valves of the steam turbine in order to prevent damage to a steam turbine generator system when the steam turbine operates abnormally and the steam turbine generator control system cannot control the steam turbine system within a normal range.
The ETS control system has at least the following shutdown functions:
turbine speed > 110% of rated speed
Excessive axial displacement
Lubricating oil pressure less than or equal to 0.02MPa (two out of three)
Support bearing temperature >75 ℃ (or)
Thrust bearing temperature >75 ℃ (or)
Condenser vacuum lower than 0.06MPa (two out of three)
Fault of generator group
Protection against manual shutdown
After the steam turbine set realizes remote centralized control, the on-site operation room is free of on-duty personnel. When the UPS fault causes the control system to fail or the ETS system of the unit per se has a fault and other extreme conditions, the only shutdown mode by manually turning on the emergency protector cannot be realized. In view of the situation, an effective shutdown mode is needed to enable the personnel at the remote centralized control post to shutdown in a mode of manually pressing the emergency stop button, so that the safety of the unit is guaranteed.
Disclosure of Invention
In order to solve the technical problem provided by the background technology, the invention provides a manual ETS method for the centralized control of a steam turbine set, which ensures that the steam turbine set can still be manually and emergently stopped when the ETS of the steam turbine set is invalid after the steam turbine set realizes the remote centralized control.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manual ETS method for centralized control of a steam turbine set comprises the following steps:
1) an emergency stop button is newly added on an operation desk of a remote centralized control hall, and an electrical control cabinet is newly added in a centralized control electrical room; an emergency stop button newly added on the operating platform is connected with the control cabinet through a cable, and an emergency stop command is sent to the electrical control cabinet;
2) an electrical control cabinet is additionally arranged in an electrical room of the unit, and the dual-redundancy shutdown electromagnetic valve bank is arranged on the site of the unit and is connected with the control cabinet through a cable; the control cabinet is communicated with the control cabinet of a remote centralized control hall through redundant optical fibers, and an emergency shutdown command issued by the remote centralized control hall acts on the dual-redundant shutdown electromagnetic valve set through the optical fibers; the valve group acts, and the system is stopped; when the unit has a starting condition, a reset button in the electrical control cabinet is manually reset on site, the valve group is reset, and the unit operates normally;
3) the dual redundant shutdown solenoid valve block for a steam turbine set centralized controlled manual ETS comprises: the one-way valve, the two-position four-way electromagnetic valve and the cartridge valve are opened in a jacking mode; the oil inlet end of the top-opening one-way valve is connected with the safety oil inlet end of the original unit through a hand valve, and the oil outlet end of the top-opening one-way valve is connected with the cartridge valve and is connected with the safety oil outlet end through the hand valve; one end of the two-position four-way electromagnetic valve is connected with the pressure oil inlet, the other end of the two-position four-way electromagnetic valve is connected with the cartridge valve, and the other end of the two-position four-way electromagnetic valve is connected with the oil return tank;
when the two-position four-way electromagnetic valves are both in a reset state when being conducted, pressure oil reaches the cartridge valve to build pressure, the top-opening one-way valve is conducted, and the cartridge valve is stopped; the safety oil flows to a safety oil outlet through the component, the unit normally works, and the pressure keeps working pressure; when an emergency stop button of an operation table is pressed, only any one of the two-position four-way electromagnetic valves is required to act, pressure oil directly flows to the oil return tank, the jacking one-way valve is closed, the cartridge valve is switched on, safety oil flows to the oil return tank through the cartridge valve, the pressure of the safety oil and the pressure of power oil of the unit are both reduced to 0, and a main steam valve of the unit is closed.
Compared with the prior art, the invention has the beneficial effects that:
the system is put into use in a coke dry quenching waste heat generator set, a sintering waste heat generator set, a blast furnace gas generator set and a TRT generator set of a steel company till now, the rapid shutdown is realized through a plurality of tests, the shutdown not only realizes the rapid closing of a main throttle valve of the unit, but also interlocks the rapid closing of a high-pressure throttle valve and a medium-pressure throttle valve, and ensures the safe operation of the unit.
Drawings
FIG. 1 is a system overview of a manual ETS method for centralized control of a steam turbine plant in accordance with the present invention;
fig. 2 is a hydraulic system diagram of a dual redundant shutdown solenoid valve assembly of the present invention.
In the figure: 1-top opening one-way valve 2-two-position four-way electromagnetic valve 3-cartridge valve.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings.
A manual ETS method for centralized control of a steam turbine set comprises the following steps:
1) as shown in fig. 1, an emergency stop button is newly added on an operation desk of a remote centralized control hall, and an electrical control cabinet is newly added in a centralized control electrical room; an emergency stop button newly added on the operating platform is connected with the control cabinet through a cable, and an emergency stop command is sent to the electrical control cabinet;
2) as shown in fig. 1, an electrical control cabinet is additionally arranged in an electrical room of the unit, and the dual-redundancy shutdown solenoid valve group is installed on the site of the unit and connected with the control cabinet through a cable; the control cabinet is communicated with the control cabinet of a remote centralized control hall through redundant optical fibers, and an emergency shutdown command issued by the remote centralized control hall acts on the dual-redundant shutdown electromagnetic valve set through the optical fibers; the valve group acts, and the system is stopped; when the unit has a starting condition, a reset button in the electrical control cabinet is manually reset on site, the valve group is reset, and the unit operates normally;
3) as shown in fig. 2, the dual redundant shutdown solenoid valve set for a steam turbine set centralized manual ETS includes: the check valve 1, the two-position four-way electromagnetic valve 2 and the cartridge valve 3 are opened; the oil inlet end of the top-opening one-way valve 1 is connected with the oil inlet end of the safety oil of the original unit through a hand valve, and the oil outlet end of the top-opening one-way valve is connected with the cartridge valve 3 and is connected with the oil outlet end of the safety oil through the hand valve; one end of the two-position four-way electromagnetic valve 2 is connected with a pressure oil inlet, the other end of the two-position four-way electromagnetic valve is connected with the cartridge valve 3, and the other end of the two-position four-way electromagnetic valve is connected with an oil return tank;
when the two-position four-way electromagnetic valves 2 are both in a reset state when being switched on, pressure oil reaches the cartridge valve 3 to build pressure, the top-opening one-way valve 1 is switched on, and the cartridge valve 3 is switched off; the safety oil flows to a safety oil outlet through the component, the unit normally works, and the pressure keeps working pressure; when an emergency stop button of an operation table is pressed, only any one of the two-position four-way electromagnetic valves 2 is required to act, pressure oil directly flows to the oil return tank, the one-way valve 1 is opened in a jacking mode and is stopped, the cartridge valve 3 is conducted, safety oil flows to the oil return tank through the cartridge valve 3, the safety oil and the power oil pressure of the unit are both reduced to 0, and a main steam valve of the unit is closed.
The manual ETS for the centralized control of the steam turbine set is independent of the original ETS. According to the type of the steam turbine set, a special integrated dual-redundancy shutdown electromagnetic valve set is designed through a special hydraulic pipeline, and the system is shut down when any one electromagnetic valve acts. When the machine is stopped, the quick closing of a main throttle of the machine set is realized, and the high-pressure throttle and the medium-pressure throttle are interlocked to close quickly.
The implementation steps of installing the dual-redundancy shutdown solenoid valve bank in an oil way of an original system and testing the dual-redundancy shutdown solenoid valve bank are as follows:
1) before stopping, the valve group is firstly positioned and installed, and the oil pipe is prefabricated to the joint position. And laying cables and connecting wires between the electromagnetic valve and the control cabinet, and testing whether the electromagnetic valve acts normally.
2) And cutting the original system oil pipeline after the unit is shut down, butt-welding the new pipeline, purging the new pipeline, and performing oil circulation.
3) And after the oil product is qualified, a static shutdown function test is carried out, an operation console of a remote centralized control hall presses an emergency shutdown button, and a unit redundancy shutdown valve component operates normally. And a reset button in the operation cabinet ensures that the redundancy shutdown valve assembly of the unit acts normally.
4) And (4) performing dynamic shutdown function test, operating the unit at a low rotating speed of 500r/min, opening an electric main throttle, pressing an emergency stop button by a remote centralized control hall operating console, enabling the redundant shutdown valve assembly of the unit to normally act, rapidly shutting down the unit, and closing the electric main throttle. And a reset button in the operation cabinet ensures that the redundancy shutdown valve assembly of the unit acts normally.
The system is put into use in a dry quenching waste heat generator set, a sintering waste heat generator set, a blast furnace gas generator set and a TRT generator set of Spanish mackerel circle division company, and all tests show that the system can be stopped quickly, and the main steam valve of the unit can be closed quickly when the system is stopped, and the high-pressure regulating valve and the medium-pressure regulating valve can be closed quickly in an interlocking manner, so that the safe operation of the unit is guaranteed.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (2)
1. A manual ETS method for centralized control of a steam turbine set is characterized by comprising the following steps:
1) an emergency stop button is newly added on an operation desk of a remote centralized control hall, and an electrical control cabinet is newly added in a centralized control electrical room; an emergency stop button newly added on the operating platform is connected with the control cabinet through a cable, and an emergency stop command is sent to the electrical control cabinet;
2) an electrical control cabinet is additionally arranged in an electrical room of the unit, and the dual-redundancy shutdown electromagnetic valve bank is arranged on the site of the unit and is connected with the control cabinet through a cable; the control cabinet is communicated with the control cabinet of a remote centralized control hall through redundant optical fibers, and an emergency shutdown command issued by the remote centralized control hall acts on the dual-redundant shutdown electromagnetic valve set through the optical fibers; the valve group acts, and the system is stopped; when the unit has a starting condition, a reset button in the electrical control cabinet is manually reset on site, the valve group is reset, and the unit operates normally;
3) the dual redundant shutdown solenoid valve block for a steam turbine set centralized controlled manual ETS comprises: the one-way valve, the two-position four-way electromagnetic valve and the cartridge valve are opened in a jacking mode; the oil inlet end of the top-opening one-way valve is connected with the safety oil inlet end of the original unit through a hand valve, and the oil outlet end of the top-opening one-way valve is connected with the cartridge valve and is connected with the safety oil outlet end through the hand valve; one end of the two-position four-way electromagnetic valve is connected with the pressure oil inlet, the other end of the two-position four-way electromagnetic valve is connected with the cartridge valve, and the other end of the two-position four-way electromagnetic valve is connected with the oil return tank.
2. The manual ETS method for the centralized control of the turboset according to claim 1, wherein when both two-position four-way solenoid valves are in a reset state, pressure oil reaches the cartridge valve to build pressure, the top check valve is opened, and the cartridge valve is closed; the safety oil flows to a safety oil outlet through the component, the unit normally works, and the pressure keeps working pressure; when an emergency stop button of an operation table is pressed, only any one of the two-position four-way electromagnetic valves is required to act, pressure oil directly flows to the oil return tank, the jacking one-way valve is closed, the cartridge valve is switched on, safety oil flows to the oil return tank through the cartridge valve, the pressure of the safety oil and the pressure of power oil of the unit are both reduced to 0, and a main steam valve of the unit is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010524661.XA CN111749735A (en) | 2020-06-10 | 2020-06-10 | Manual ETS method for centralized control of steam turbine set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010524661.XA CN111749735A (en) | 2020-06-10 | 2020-06-10 | Manual ETS method for centralized control of steam turbine set |
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| CN202010524661.XA Pending CN111749735A (en) | 2020-06-10 | 2020-06-10 | Manual ETS method for centralized control of steam turbine set |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300547U (en) * | 2011-09-27 | 2012-07-04 | 杭州吉通机电有限公司 | Quick-closing control device |
| CN102828787A (en) * | 2012-08-17 | 2012-12-19 | 德阳瑞能电力科技有限公司 | Control system for turbine |
| CN203285495U (en) * | 2013-05-30 | 2013-11-13 | 浙江汽轮成套技术开发有限公司 | Integration system for electric protection and turbine control |
| CN103982249A (en) * | 2014-05-04 | 2014-08-13 | 上海汇益控制系统股份有限公司 | Emergency trip device capable of isolating testing signal |
| CN204646341U (en) * | 2015-06-02 | 2015-09-16 | 济南达能动力技术有限责任公司 | A kind of urgent steam-operating oil pump remote manual control system |
| CN209198932U (en) * | 2019-01-16 | 2019-08-02 | 南京凯盛开能环保能源有限公司 | A kind of cement afterheat generation realized using scattered control system is from start stop system |
| CN209724428U (en) * | 2019-01-21 | 2019-12-03 | 江阴信和电力仪表有限公司 | A kind of trip free device for steam turbine |
| CN110593965A (en) * | 2019-08-19 | 2019-12-20 | 北京博力威格智能传控设备有限公司 | Main valve shutoff valve group, control method thereof and steam turbine |
| CN210033541U (en) * | 2019-05-21 | 2020-02-07 | 南京汽轮电力科技有限公司 | Emergency trip device of steam turbine |
-
2020
- 2020-06-10 CN CN202010524661.XA patent/CN111749735A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300547U (en) * | 2011-09-27 | 2012-07-04 | 杭州吉通机电有限公司 | Quick-closing control device |
| CN102828787A (en) * | 2012-08-17 | 2012-12-19 | 德阳瑞能电力科技有限公司 | Control system for turbine |
| CN203285495U (en) * | 2013-05-30 | 2013-11-13 | 浙江汽轮成套技术开发有限公司 | Integration system for electric protection and turbine control |
| CN103982249A (en) * | 2014-05-04 | 2014-08-13 | 上海汇益控制系统股份有限公司 | Emergency trip device capable of isolating testing signal |
| CN204646341U (en) * | 2015-06-02 | 2015-09-16 | 济南达能动力技术有限责任公司 | A kind of urgent steam-operating oil pump remote manual control system |
| CN209198932U (en) * | 2019-01-16 | 2019-08-02 | 南京凯盛开能环保能源有限公司 | A kind of cement afterheat generation realized using scattered control system is from start stop system |
| CN209724428U (en) * | 2019-01-21 | 2019-12-03 | 江阴信和电力仪表有限公司 | A kind of trip free device for steam turbine |
| CN210033541U (en) * | 2019-05-21 | 2020-02-07 | 南京汽轮电力科技有限公司 | Emergency trip device of steam turbine |
| CN110593965A (en) * | 2019-08-19 | 2019-12-20 | 北京博力威格智能传控设备有限公司 | Main valve shutoff valve group, control method thereof and steam turbine |
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Application publication date: 20201009 |
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