CN205001644U - High -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine - Google Patents
High -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine Download PDFInfo
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- CN205001644U CN205001644U CN201520682951.1U CN201520682951U CN205001644U CN 205001644 U CN205001644 U CN 205001644U CN 201520682951 U CN201520682951 U CN 201520682951U CN 205001644 U CN205001644 U CN 205001644U
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- valve
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- positioner
- pneumatic positioner
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Abstract
The utility model provides a high -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine, relate to valve technical field, including pneumatic valve, a pneumatic positioner valve and the 2nd pneumatic positioner valve, two pipelines of two positive action and reaction of a pneumatic positioner valve are connected respectively on pneumatic valve, two pipelines of the 2nd pneumatic positioner valve rear side pass through the three -way valve and connect respectively on two pipelines of a pneumatic positioner valve rear side, a pneumatic positioner valve and the 2nd pneumatic positioner valve's front and back end side pipe line is gone up respectively and is provided with manual isolation valve respectively, the front side pipeline connection of the manual isolation valve of a pneumatic positioner valve and the 2nd pneumatic positioner valve front end together and the front side be provided with a manual isolation valve again. The utility model discloses short time judges whether valve positioner breaks down, has avoided online change valve positioner, and extension boiler life has reduced the valve troubleshooting time, has saved the unit and has opened the shut down cost.
Description
Technical field:
The utility model relates to valve technology field, specifically a kind of thermal motor high pressure turbine by Intelligent adjustment pneumatic valve.
Background technique:
Along with industrial automation process, the intellectuality of pneumatic valve has slowly spread in industry-by-industry pipe control, and intellectuality is mainly embodied in pneumatic valve and carries intelligent valve positioner by computer program control valve switch and accurate Flow-rate adjustment.The intellectuality of pneumatic valve also has important application in power plant's industry.
At present, China's fired power generating unit high pressure turbine by control major part still adopts pneumatic valve to regulate.High pressure turbine by modulating valve is the visual plant that thermoelectricity realizes that unit cold and hot opens the functions such as machine, compressor emergency shutdown not blowing out and FCB.Whether high other valve of adjusting can steadily directly have influence on unit and normally run by precise movement, and guarantee unit protects boiler safety in case of a failure.High other adjust valve unit starting, shutdown and urgent varying duty time action, because the temperature difference before and after valve, pressure reduction are large, the easy jam of valve.And high other valve of adjusting is longer for working time in high-temperature high-pressure work environment, adjusts the rate of fault of valve also can improve further.
The unit be in operation, if when high other tune valve generation jam or positioning work piece damage cisco unity malfunction, changing valve positioner needs high other tune valve to close, and also needs on-line tuning after changing positioning work piece.Not only extend the unit breakdown repair time, and have influence on unit safety operation in processing procedure.
Model utility content:
It is simple that technical problem to be solved in the utility model is to provide a kind of structure, reduces the important pneumatic valve breakdown repair time, avoid the thermal motor high pressure turbine by Intelligent adjustment pneumatic valve of on-line tuning in unit running process.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of thermal motor high pressure turbine by Intelligent adjustment pneumatic valve, it is characterized in that: comprise pneumatic valve, first pneumatic positioner valve and the second pneumatic positioner valve, two positive interactions and reaction two pipelines of the first described pneumatic positioner valve are connected on pneumatic valve, on rear side of the second described pneumatic positioner valve, two pipelines to be connected on rear side of the first pneumatic positioner valve on two pipelines by three-way valve, the front end and back end side pipe line of the first described pneumatic positioner valve and the second pneumatic positioner valve respectively on be respectively arranged with manual isolation valve door, the front side pipeline of the manual isolation valve door of the first pneumatic positioner valve and the second pneumatic positioner valve front end links together and front side is provided with a manual isolation valve door again.
The utility model can reduce the important pneumatic valve breakdown repair time, avoids the intelligent pneumatic power valve of on-line tuning in unit running process.Original pneumatic valve increases a standby valve positioning work piece, and standby valve positioning work piece and former valve positioner all adopt manual isolation valve goalkeeper it are isolated, standby valve positioning work piece and former valve positioner separate adjust after position.
The beneficial effects of the utility model are: the utility model is optimized original pneumatic valve, when failsafe valve, can the active and standby valve positioner of no-harass switch online, thus the short time judges whether valve positioner breaks down, and avoids and changes valve positioner online.Ensure unit operation safety, prolonged boiler working life.Economic aspect decreases failsafe valve emergency repair time, saves Unit Commitment machine cost.
Accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
Embodiment:
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
A kind of thermal motor high pressure turbine by Intelligent adjustment pneumatic valve comprises pneumatic valve as shown in Figure 1, first pneumatic positioner valve and the second pneumatic positioner valve, two positive interactions and reaction two pipelines of first pneumatic positioner valve are connected on pneumatic valve, on rear side of second pneumatic positioner valve, two pipelines to be connected on rear side of the first pneumatic positioner valve on two pipelines by three-way valve, the front end and back end side pipe line of the first pneumatic positioner valve and the second pneumatic positioner valve respectively on be respectively arranged with manual isolation valve door, the front side pipeline of the manual isolation valve door of the first pneumatic positioner valve and the second pneumatic positioner valve front end links together and front side is provided with a manual isolation valve door again.Numbering is set to 1,2,3,4,5,6 and 7 by the numbering of manual isolation valve door as shown in the figure respectively, triple valve is set to 8 and 9 as figure numbers respectively, the utility model reduces the important pneumatic valve breakdown repair time, avoids on-line tuning in unit running process.Used first pneumatic positioner valve of high other tune valve is straight journey control mode, high other valve of adjusting has an angle travel feedback coupling shaft when dispatching from the factory, a coupling can be processed, allowed by coupling and adjust the coupling shaft of valve and positioning work piece rotatingshaft to carry out slitless connection.Just can drive two valve positioner actions during so high other action simultaneously.Collaborate mutually to cause in order to avoid two valve positioners and adjust valve misoperation, two valve positioner imports and export each increase manual isolation valve door, gas source pipe is connected by threeway 8,9 after valve.When the first pneumatic positioner valve " when coming into operation, open the manual isolation valve door 2,3,4 of the first pneumatic positioner valve, close the manual isolation valve door 5,6,7 of the second pneumatic positioner valve simultaneously, reach the function of this second valve positioner of isolation.In like manner, judge the first pneumatic positioner valve whether fault time, close three manual isolation valve doors 2,3,4 of the first pneumatic positioner valve, open three manual isolation valve doors 5,6,7 of hand-operated pneumatic valve positioner simultaneously.By the method for isolation manual isolation valve door, no-harass switch is carried out to two valve positioners.
Specifically be arranged between compressor emergency shutdown turn(a)round, carry out according to the following steps when strip inspection being carried out to high other tune valve by engineering.
1) remove positioning work piece fixed plate, the coupling processed is fixed on reserved angle travel feedback coupling shaft.
2), after adjusting valve to recover, the second pneumatic positioner valve and the coupling installed are carried out dock and fix.
3) the first pneumatic positioner valve gas source pipe is removed, increase valve at two positioning work piece suction ports and air outlet, after being connected by threeway 8,9 after valve, be fixed to valve upper and lower air cylinders.
4) serve source of the gas, close the second pneumatic positioner valve manual isolation valve door 5,6,7, open the first pneumatic positioner valve manual isolation valve door 2,3,4.Signaling line is connected to the first pneumatic positioner valve, adjustment is positioned to the first pneumatic positioner valve.
5), after the first pneumatic positioner valve adjustment terminates, signaling line is connected to the second pneumatic positioner valve.Open the valve of the second pneumatic positioner valve and close the valve switch of the first pneumatic positioner valve, adjustment is positioned to the second pneumatic positioner valve.
6), after the second pneumatic positioner valve adjustment terminates, return to the first pneumatic positioner valve and run.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. a thermal motor high pressure turbine by Intelligent adjustment pneumatic valve, it is characterized in that: comprise pneumatic valve, first pneumatic positioner valve and the second pneumatic positioner valve, two positive interactions and reaction two pipelines of the first described pneumatic positioner valve are connected on pneumatic valve, on rear side of the second described pneumatic positioner valve, two pipelines to be connected on rear side of the first pneumatic positioner valve on two pipelines by three-way valve, the front end and back end side pipe line of the first described pneumatic positioner valve and the second pneumatic positioner valve respectively on be respectively arranged with manual isolation valve door, the front side pipeline of the manual isolation valve door of the first pneumatic positioner valve and the second pneumatic positioner valve front end links together and front side is provided with a manual isolation valve door again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682951.1U CN205001644U (en) | 2015-09-06 | 2015-09-06 | High -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682951.1U CN205001644U (en) | 2015-09-06 | 2015-09-06 | High -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001644U true CN205001644U (en) | 2016-01-27 |
Family
ID=55158532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520682951.1U Expired - Fee Related CN205001644U (en) | 2015-09-06 | 2015-09-06 | High -pressure bypass intelligent regulation pneumatic valve of thermoelectricity machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001644U (en) |
-
2015
- 2015-09-06 CN CN201520682951.1U patent/CN205001644U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170428 Address after: 232000 Anhui city in Huainan Province, Panji district town Tianji Street Community side frame Patentee after: TIANJI SECOND POWER PLANT, HUAIHU ELECTRIC POWER CO., LTD. Address before: 232000 Anhui city of Huainan province Panji District Street Township in Tianji frame Patentee before: HUAIHU COAL & POWER CO., LTD. TIANJI POWER PLANT |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20200906 |