CN203099797U - Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions - Google Patents
Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions Download PDFInfo
- Publication number
- CN203099797U CN203099797U CN2012207495567U CN201220749556U CN203099797U CN 203099797 U CN203099797 U CN 203099797U CN 2012207495567 U CN2012207495567 U CN 2012207495567U CN 201220749556 U CN201220749556 U CN 201220749556U CN 203099797 U CN203099797 U CN 203099797U
- Authority
- CN
- China
- Prior art keywords
- gate
- cut
- pressure
- control system
- manual
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses a device based on preventing a medium-pressure water supply safety door of a combined cycle unit from frequent actions. The device based on preventing the medium-pressure water supply safety door of the combined cycle unit from the frequent actions comprises a control part and a pressure relieving part, and is characterized in that the pressure relieving part is formed by a power-driven intercept valve, a manual intercept valve I, a manual intercept valve II, a seamless steel tube and 90-degree elbows. The manual intercept valve I and the manual intercept valve II are welded on the seamless steel tube, the inlet section of the manual intercept valve I is connected with a medium-pressure coal economizer through the 90-degree elbow, and the outlet section of the manual intercept valve II is connected with a medium outlet through the 90-degree elbow. The control part comprises a pressure sensor, a DCS control system and a power-driven intercept valve, wherein the control input end of the power-driven intercept valve is connected with the output end of the DCS control system, the input end of the DCS control system is connected with the output end of the pressure sensor, and the detecting end of the pressure sensor is communicated with the medium-pressure coal economizer. The device prevents the medium-pressure water supply safety door of a combined cycle unit M701F from frequent actions through the power-driven intercept valve and the manual intercept valves, and has the advantages of prolonging the service life of a safety door and improving safety of unit operation.
Description
Technical field
The utility model relates to a kind of based on the device that prevents to press in the Combined Cycle Unit feedwater safety door frequent movement, is applicable to the M701F Combined Cycle Unit.Belong to power generation industries and auxiliary device technical field.
Background technology
In the M701F Combined Cycle Unit running, when the boiler medium voltage network is in more extreme operating mode, as unit starting or the rapid fluctuation of middle pressure steam water-level, in press feedwater to adjust door must of short duration closing, press economizer to begin to build the pressure in causing, the middle interior water of economizer of pressing is boosted by the flue gas heating simultaneously, and the constant speed feed pump can't come step-down, the safety door frequent movement by the rotating speed of adjusting feed pump.If things go on like this, more and more serious leakage situation appears in middle pressure feedwater safety door, and insitu moisture is filled the air, and has a strong impact on the safe operation of electrical equipment and Thermal Equipment, and high-quality pure water is wasted in a large number, has influenced the economic stability operation of power plant.
Summary of the invention
The purpose of this utility model is to press feedwater safety door frequent movement in the Combined Cycle Unit in order to prevent, provide a kind of based on the device that prevents from the Combined Cycle Unit to press feedwater safety door frequent movement, this device simple in structure, reliable, can effectively control the switching of pressing the feedwater safety door in the Cycle Unit.
The purpose of this utility model can be achieved through the following technical solutions:
Based on the device that prevents to press in the Combined Cycle Unit feedwater safety door frequent movement, comprise that control section and pressure release partly form, it is characterized in that: described pressure release part by electronic cut-off gate, manually one of cut-off gate, manually cut-off gate two, seamless steel pipe and 90 ° of elbows constitute, manually two of one of cut-off gate, manual cut-off gate be welded on the seamless steel pipe, manually the inducer of one of cut-off gate links to each other with middle pressure economizer by 90 ° of elbows, and manually two of cut-off gate outlet section links to each other with media outlet by 90 ° of elbows; Control section comprises pressure sensing, DCS control system and electronic cut-off gate, the control input end of electronic cut-off gate links to each other with the output of DCS control system, the input of DCS control system connects pressure sensing output, and economizer is pressed in being communicated with in pressure sensing test side.
The purpose of this utility model can also be achieved through the following technical solutions:
A kind of Technological improvement plan of the present utility model is: DCS control system embedded software control module, the pressure signal that this software control module is sent here according to pressure sensor, finish following action: when pressure surpasses ceiling value H=7MPa, DCS control system output high level " 1 ", the electronic cut-off gate of control are opened middle pressure economizer) pressure release; When pressure is lower than limit value L=6MPa, described DCS control system output low level " 0 ", the DCS control system is controlled electronic cut-off gate and is closed.
A kind of Technological improvement plan of the present utility model is: one of described manual cut-off gate, manually cut-off gate two is made of the manual cut-off gate of DN25 type, described electronic cut-off gate) constitutes by the electronic cut-off gate of DN25 type, described 90 ° of elbows are made of described seamless steel pipe 20G type elbow) constitute by the 20G shape steel tube.
The beneficial effects of the utility model are as follows:
1, the utility model is owing to be provided with control section, in the DCS of control section control system embedded software control module, the pressure signal that this software control module is sent here according to pressure sensor, finish following action: when pressure surpasses ceiling value H=7MPa, DCS control system output high level " 1 ", the electronic cut-off gate of control are opened middle pressure economizer (5) pressure release; When pressure is lower than limit value L=6MPa, described DCS control system output low level " 0 ", the DCS control system is controlled electronic cut-off gate and is closed, therefore, can avoid in the M701F Combined Cycle Unit pressing the frequent movement of feedwater safety door, have service life of prolonging safety door, reduce and improve the beneficial effect of unit operation security the disturbance of unit.
2, the utility model is simple in structure, adopt electronic cut-off gate and manually cut-off gate, control the open and close of electronic cut-off gate by control device, the utility model has reduced a large amount of carbonated drink losses, has improved the work on the spot condition, has improved the unit operation economy.
Description of drawings
Fig. 1 is the structural representation of this specific embodiment 1.
Fig. 2 is a logic control chart of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Specific embodiment 1:
As shown in Figure 1, present embodiment comprises that control section and pressure release partly form, described pressure release part is made of two 2-1, seamless steel pipe 3 and 90 ° of elbows 4 of one of electronic cut-off gate 1, manual cut-off gate 2, manual cut-off gate, manually two 2-1 of one of cut-off gate 2, manual cut-off gate are welded on the seamless steel pipe 3, manually the inducer of one of cut-off gate 2 links to each other with middle pressure economizer 5 by 90 ° of elbows 4, and manually 22 of cut-off gate outlet section links to each other with media outlet by 90 ° of elbows 4; Control section comprises pressure sensing 6, DCS control system 7 and electronic cut-off gate 1, the control input end of electronic cut-off gate 1 links to each other with the output of DCS control system 7, the input of DCS control system 7 connects the output of pressure sensing 6, presses economizer 5 during the test side of pressure sensing 6 is communicated with.
In the present embodiment:
See figures.1.and.2, DCS control system 7 embedded software control modules, the pressure signal that this software control module is sent here according to pressure sensor 6, finish following action: when pressure surpasses ceiling value H=7MPa, DCS control system 7 output high level " 1 ", the electronic cut-off gate 1 of control are opened middle pressure economizer 5 pressure releases; When pressure is lower than limit value L=6MPa, described DCS control system 7 output low levels " 0 ", the electronic cut-off gate 1 of DCS control system 7 controls is closed.Pressure water supply system operation in not influencing.
Two 2-1 of one of described manual cut-off gate 2, manual cut-off gate are made of the manual cut-off gate of DN25 type, and described electronic cut-off gate 1 is made of the electronic cut-off gate of DN25 type, and described 90 ° of elbows 4 are made of 20G type elbow, and described seamless steel pipe 3 is made of the 20G shape steel tube.DCS control system 7 adopts conventional DCS control technology.
The utility model mainly solves the problem of pressing feedwater safety door frequent movement in the M701F Combined Cycle Unit, and described electronic cut-off gate 1 links to each other with DCS control system 7, controls opening or closing of electronic cut-off gate 1.
Claims (3)
1. based on the device that prevents to press in the Combined Cycle Unit feedwater safety door frequent movement, comprise that control section and pressure release partly form, it is characterized in that: described pressure release part is by electronic cut-off gate (1), one of manual cut-off gate (2), two (2-1) of manual cut-off gate, seamless steel pipe (3) and 90 ° of elbows (4) constitute, one of manual cut-off gate (2), manually two (2-1) of cut-off gate are welded on the seamless steel pipe (3), manually the inducer of one of cut-off gate (2) links to each other with middle pressure economizer (5) by 90 ° of elbows (4), and manually two (2) of cut-off gate outlet section links to each other with media outlet by 90 ° of elbows (4); Control section comprises pressure sensing (6), DCS control system (7) and electronic cut-off gate (1), the control input end of electronic cut-off gate (1) links to each other with the output of DCS control system (7), the input of DCS control system (7) connects the output of pressure sensing (6), and economizer (5) is pressed in being communicated with in the test side of pressure sensing (6).
2. described based on the device that prevents to press in the Combined Cycle Unit feedwater safety door frequent movement according to claim 1, it is characterized in that: DCS control system (7) embedded software control module, the pressure signal that this software control module is sent here according to pressure sensor (6), finish following action: when pressure surpasses ceiling value H=7MPa, DCS control system (7) output high level " 1 ", control electronic cut-off gate (1) and open middle pressure economizer (5) pressure release; When pressure is lower than limit value L=6MPa, described DCS control system (7) output low level " 0 ", DCS control system (7) is controlled electronic cut-off gate (1) and is closed.
3. described based on the device that prevents to press in the Combined Cycle Unit feedwater safety door frequent movement according to claim 1, it is characterized in that: two (2-1) of one of described manual cut-off gate (2), manual cut-off gate are made of the manual cut-off gate of DN25 type, described electronic cut-off gate (1) is made of the electronic cut-off gate of DN25 type, described 90 ° of elbows (4) are made of 20G type elbow, and described seamless steel pipe (3) is made of the 20G shape steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207495567U CN203099797U (en) | 2012-12-31 | 2012-12-31 | Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207495567U CN203099797U (en) | 2012-12-31 | 2012-12-31 | Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099797U true CN203099797U (en) | 2013-07-31 |
Family
ID=48851195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207495567U Expired - Fee Related CN203099797U (en) | 2012-12-31 | 2012-12-31 | Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706407A (en) * | 2020-06-22 | 2020-09-25 | 华电忻州广宇煤电有限公司 | Steam turbine emergency trip control module |
-
2012
- 2012-12-31 CN CN2012207495567U patent/CN203099797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706407A (en) * | 2020-06-22 | 2020-09-25 | 华电忻州广宇煤电有限公司 | Steam turbine emergency trip control module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203605211U (en) | Water feeding system of boiler | |
| CN108897348B (en) | ORC power generation system working medium tank liquid level automatic control system | |
| CN103542399B (en) | Boiler feed water system and feed water adjusting method thereof | |
| CN203099797U (en) | Device based on preventing medium-pressure water supply safety door of combined cycle unit from frequent actions | |
| CN201163019Y (en) | System connection device of low temperature coal economizer | |
| CN108468575B (en) | System for changing extraction condensing unit into back pressure unit based on injection heat pump and operation method thereof | |
| CN203718744U (en) | Flue gas waste heat recovery exhaust gas temperature control system | |
| CN2913853Y (en) | Full-automatic self-pressurized water feeder for boilers | |
| CN202532424U (en) | Energy-saving environment-friendly steam generating device | |
| CN203907579U (en) | System for whole-course automatic control of drum water level of waste heat boiler of gas turbine | |
| CN206072643U (en) | Welding type high pressure reducing pressure by regulating flow pipe | |
| CN202047874U (en) | Waste heat power generation system | |
| CN203162223U (en) | Self-operated hydraulic three-way valve of isolation system of high pressure heater | |
| CN105443466A (en) | Hydraulic control system for quick opening cylinder and upper roll balance cylinder of steel tube straightening machine | |
| CN210268294U (en) | Waste heat recycling system of anti-scaling air compressor | |
| CN109296415B (en) | Combined cycle combined cooling heating power unit steam supply superheat degree utilization system | |
| CN103438722B (en) | Combined type low temperature exhaust heat power generation system in dry method cement production lines | |
| CN202092115U (en) | System for improving pressure of desuperheating water of superheater | |
| CN215949606U (en) | Steam long distance pipeline structure for steam turbine | |
| CN100531843C (en) | Novel flash tank feeding style improvement method for steam condensed water | |
| CN204490923U (en) | Converter trunnion ring water coolant supply line arrangement | |
| CN216953019U (en) | Compound over heater desuperheating water system of boiler | |
| CN203869020U (en) | Water supply system for combined-cycle waste heat boiler of heat supply unit | |
| CN204495083U (en) | A kind of iron/steel slag waste heat utilizes device | |
| CN220415797U (en) | Cooling water control device of dust removal fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20131231 |