CN210768943U - Electronic emergency trip protection device for steam turbine - Google Patents
Electronic emergency trip protection device for steam turbine Download PDFInfo
- Publication number
- CN210768943U CN210768943U CN201922031121.3U CN201922031121U CN210768943U CN 210768943 U CN210768943 U CN 210768943U CN 201922031121 U CN201922031121 U CN 201922031121U CN 210768943 U CN210768943 U CN 210768943U
- Authority
- CN
- China
- Prior art keywords
- main
- valve
- valves
- cartridge
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model provides a steam turbine electronic type emergency trip protection device, its main points are: on a safety oil pipeline, two cartridge valves are connected in parallel to form a main cartridge valve group, and a manual valve, two OPT electromagnetic valves and a pressure oil control port of the main cartridge valve group are connected in series to form a main shutdown protection device; the other two cartridge valves are connected in parallel to form an auxiliary cartridge valve group, and the other two OPT electromagnetic valves and a pressure oil control port of the auxiliary cartridge valve group are connected in series to form an auxiliary shutdown protection device; after the main and auxiliary shutdown protection devices are connected in parallel, one path of a safety oil pipe of the main and auxiliary shutdown protection devices is connected to a sliding valve port of a main valve through a main valve electromagnetic valve, and the other path of the safety oil pipe is connected with an OPC device control oil port; all the electromagnetic valves and the manual valves are of a two-position three-way type. The utility model has the advantages that: the protection action value is more accurate, the action is faster, and the reliability is higher.
Description
Technical Field
The utility model relates to a small capacity turbo generator set emergency interruption protection device.
Background
The small-capacity steam turbine generator unit generally remains a mechanical emergency trip protection device, the device is connected with an oil circuit of a steam turbine hydraulic speed regulation system and is easily polluted by oil, and the phenomena that the unit cannot be normally hung and opened or the unit automatically hangs and opens a main throttle just by starting a high-pressure oil pump often occur. The mechanical emergency trip protection device throws out the flyweight by physical centrifugal force generated after a turbine rotor reaches a certain rotating speed, so that the emergency trip protection device acts to stop the operation of the turbine. However, the flyweight has little chance of being thrown out and is in a long-time compression state, so that the protection action rotating speed value of the emergency interruption protection device is changed frequently, and the emergency situation that the normal protection action cannot be responded can be caused.
Disclosure of Invention
In order to solve the above problem, the utility model provides a steam turbine electronic type emergency trip protection device that protection action value is more accurate, the action is faster, the reliability is higher accomplishes the function of the former system of steam turbine.
The purpose of the utility model is realized like this: on a safety oil pipeline, two cartridge valves are connected in parallel to form a main cartridge valve group, and a manual valve, two OPT electromagnetic valves and a pressure oil control port of the main cartridge valve group are connected in series to form a main shutdown protection device; the other two cartridge valves are connected in parallel to form an auxiliary cartridge valve group, and the other two OPT electromagnetic valves and a pressure oil control port of the auxiliary cartridge valve group are connected in series to form an auxiliary shutdown protection device; after the main and auxiliary shutdown protection devices are connected in parallel, one path of a safety oil pipe of the main and auxiliary shutdown protection devices is connected to a sliding valve port of a main valve through a main valve electromagnetic valve, and the other path of the safety oil pipe is connected with an OPC device control oil port; all the electromagnetic valves and manual valves are of two-position three-way type (with mechanical locking).
The working process is as follows: when the unit is in a shutdown state, one or more of the manual valve, the manual valve in the main shutdown protection device and the auxiliary shutdown protection device and the OPT electromagnetic valve are in a shutdown position (an oil return tank port of the electromagnetic valve is opened), so that one group or two groups of the cartridge valves are opened, the safety oil is in a discharge state, and the main valve is ensured to be in a closed state. An operator presses a unit reset button, and simultaneously when the manual valve is in a reset state, the cartridge valve is in a closed state, a main valve of the unit has an opening condition, the main valve button is pressed, the main valve is opened, and the unit performs the work of flushing, testing, grid connection and the like. When the shutdown or shutdown protection action is needed, the manual valve can be manually operated on the machine set, or a shutdown signal can be sent out through the ETS, so that the two OPT electromagnetic valves of the main shutdown protection device act, and the purposes of closing the main throttle valve and stopping the machine are achieved. Two OPT solenoid valves in the auxiliary shutdown protection device are independent and are another set of shutdown protection device, a shutdown protection rotating speed value can be set manually, and when the rotating speed of the unit reaches a rotating speed protection set value measured by the speed measuring probe, the electronic rotating speed detection device can send a shutdown signal to the OPT solenoid valves to implement shutdown of the unit. The main valve electromagnetic valve and the one-way valve ensure that the main valve tightness test can be normally completed. The safety oil replaces the original pressure oil to be used as the control oil of the OPC device, and the speed-regulating air valve can quickly follow the main air valve to a full-closed position under the condition that the safety oil disappears.
Compared with the prior art, the utility model has the positive effects that: the protection action value is more accurate, the action is faster, and the reliability is higher.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Detailed Description
On a safety oil pipeline 15, two cartridge valves 7 and 8 are connected in parallel to form a main cartridge valve group, and a manual valve 1, two OPT electromagnetic valves 2 and 3 and a pressure oil control port of the main cartridge valve group are connected in series to form a main shutdown protection device; the other two cartridge valves 9 and 10 are connected in parallel to form an auxiliary cartridge valve group, and the other two OPT electromagnetic valves 4 and 5 and a pressure oil control port of the auxiliary cartridge valve group are connected in series to form an auxiliary shutdown protection device. After the main and auxiliary shutdown protection devices are connected in parallel, one path of a safety oil pipe of the main and auxiliary shutdown protection devices is connected to a sliding valve port of a main valve 14 through a main valve electromagnetic valve 6, and the other path of the safety oil pipe is connected with a control oil port of an OPC device 12; all the electromagnetic valves and manual valves are of two-position three-way type (with mechanical locking). 11 is a check valve.
The working conditions are as follows: when the unit is in a shutdown state, one or more of the shutdown device of the manual valve 1, the OPT1 electromagnetic valve 2 and the OPT2 electromagnetic valve 3 or the OPT3 electromagnetic valve 4 and the OPT4 electromagnetic valve 5 are in a shutdown position, one group or two groups of cartridge valves 7 and 8 or cartridge valves 9 and 10 are opened, safety oil is in a discharge state, and the main valve 14 is ensured to be in a closed state. When an operator presses a unit reset button and simultaneously enables the manual valve 1 to be in a reset state, the cartridge valves 7 and 8 and the cartridge valves 9 and 10 are in a closed state, the main valve 14 of the unit has an opening condition, the main valve button is pressed, the main valve 14 is opened, and the unit performs the work of running, testing, grid connection and the like. When the shutdown or shutdown protection action is needed, the manual valve 1 can be manually operated on the spot of the unit, or a shutdown signal can be sent out through the ETS, so that the shutdown devices of the OPT1 electromagnetic valve 2 and the OPT2 electromagnetic valve 3 are operated, and the purposes of closing the main valve 14 and stopping the engine are achieved. The OPT3 electromagnetic valve 4 and the OPT4 electromagnetic valve 5 are another independent shutdown protection device, the shutdown protection rotating speed value can be set manually, when the rotating speed of the unit reaches the rotating speed protection set value measured by the speed measuring probe 13, the electronic rotating speed detection device can send a shutdown signal to the OPT3 electromagnetic valve 4 and the OPT4 electromagnetic valve 5 of the electronic overspeed electromagnetic valve group to implement shutdown of the unit. The main valve electromagnetic valve 6 and the one-way valve 11 ensure that the main valve tightness test can be normally completed. The safety oil replaces the original pressure oil to be used as the control oil of the OPC device 12, and the speed regulation air valve can quickly follow the main air valve to a full-closed position under the condition that the safety oil disappears.
Claims (1)
1. An electronic emergency trip protection device for a steam turbine is characterized in that: on a safety oil pipeline, two cartridge valves are connected in parallel to form a main cartridge valve group, and a manual valve, two OPT electromagnetic valves and a pressure oil control port of the main cartridge valve group are connected in series to form a main shutdown protection device; the other two cartridge valves are connected in parallel to form an auxiliary cartridge valve group, and the other two OPT electromagnetic valves and a pressure oil control port of the auxiliary cartridge valve group are connected in series to form an auxiliary shutdown protection device; after the main and auxiliary shutdown protection devices are connected in parallel, one path of a safety oil pipe of the main and auxiliary shutdown protection devices is connected to a sliding valve port of a main valve through a main valve electromagnetic valve, and the other path of the safety oil pipe is connected with an OPC device control oil port; all the electromagnetic valves and the manual valves are of a two-position three-way type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031121.3U CN210768943U (en) | 2019-11-22 | 2019-11-22 | Electronic emergency trip protection device for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031121.3U CN210768943U (en) | 2019-11-22 | 2019-11-22 | Electronic emergency trip protection device for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768943U true CN210768943U (en) | 2020-06-16 |
Family
ID=71042276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922031121.3U Active CN210768943U (en) | 2019-11-22 | 2019-11-22 | Electronic emergency trip protection device for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210768943U (en) |
-
2019
- 2019-11-22 CN CN201922031121.3U patent/CN210768943U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103982249A (en) | Emergency trip device capable of isolating testing signal | |
| CN204553632U (en) | Wind generating set yaw hydraulic braking system | |
| GB1289030A (en) | ||
| CN111365083B (en) | Turbine through-flow part fault diagnosis method based on thermal parameters | |
| CN105805065B (en) | The ESD valve door electrohydraulic actuator of speed change | |
| CN110242363B (en) | High-safety protection system for steam turbine generator unit | |
| CN210768943U (en) | Electronic emergency trip protection device for steam turbine | |
| JP5160685B2 (en) | Control device and control method for rapid closing valve of steam turbine | |
| CN111734574A (en) | High-pressure oil jacking control system of through-flow type water turbine generator set | |
| JPH06193405A (en) | Turbomachinery and steam turbine | |
| CN102721541A (en) | Testing device and testing method for closing time of steam extraction check valve of steam turbine | |
| US3139166A (en) | Overspeed prevention device | |
| CN210087401U (en) | High-safety protection system for steam turbine generator unit | |
| CN111535882B (en) | Four-taking-out two-speed-off machine stop control device with critical security function | |
| CN212296510U (en) | Turbine overspeed protection system | |
| CN212054830U (en) | Four-taking two-speed shutdown control device with emergency security function | |
| CN212054828U (en) | Quick-shutdown control system with emergency safety device | |
| CN110886693B (en) | Method for preventing error operation of drilling pump in petroleum drilling engineering and pumping pressure protection system thereof | |
| CN109838313B (en) | Anti-asthma deflation system of gas turbine | |
| CN103884460B (en) | A kind of high speed turbine dynamometer test system with self-lock protection | |
| JP4693360B2 (en) | Turbomachine safety equipment and power generation equipment | |
| CN111271136B (en) | Quick shut-down control system with critical security device | |
| Weaver | Reliable Overspeed Protection for Industrial Drive Turbines | |
| CN204647525U (en) | The ball valve of water turbine of double locking | |
| US1444437A (en) | Regulating means for mixed-pressure turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |