CN208111100U - A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device - Google Patents
A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device Download PDFInfo
- Publication number
- CN208111100U CN208111100U CN201820560969.8U CN201820560969U CN208111100U CN 208111100 U CN208111100 U CN 208111100U CN 201820560969 U CN201820560969 U CN 201820560969U CN 208111100 U CN208111100 U CN 208111100U
- Authority
- CN
- China
- Prior art keywords
- water
- hot water
- water supply
- supply pump
- main pipe
- 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
Classifications
-
- 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
- Y02E30/00—Energy generation of nuclear origin
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to nuclear power plant's electronic main feed pump systems technology field, and in particular to a kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device.The first isolating valve is set between the cold water side entrance and conventional island desalination water distribution system of cooler, is drained into collecting-tank after the water in cooler is cooled；Hot water discharges public main pipe and receives the hot water discharged from the first water supply pump group, the second water supply pump group, third water supply pump group；First water supply pump group and hot water, which discharge, is arranged third isolating valve between public main pipe；Second water supply pump group and hot water, which discharge, is arranged the 4th isolating valve between public main pipe；Third water supply pump group and hot water, which discharge, is arranged the 5th isolating valve between public main pipe；Hot water, which discharges, is arranged the second isolating valve on public main pipe gas relief line.The utility model greatly shortens the isolation time of service work, and the safe mass for improving service work efficiency and site environment is horizontal.
Description
Technical field
The utility model belongs to nuclear power plant's electronic main feed pump systems technology field, and in particular to a kind of electronic master of nuclear power plant
Feed-water pump maintenance is with quickly isolating device.
Background technique
Currently, the cooling isolating device of the general not set maintenance of the electronic main feed pump system of domestic nuclear power plant.Executing electricity
When the relevant isolation of system drainage works such as dynamic main feed pump Disintegration overhaul, intermediate strainer Disintegration overhaul, due to temperature in system
Higher (about 177 DEG C), water loading amount are more (about 20t), generate high-temperature steam to avoid a large amount of high-temperature water concentrations from being discharged into scene, and can
Energy bring equipment or personal injury, the alarm of fire-fighting probe or spray etc. are abnormal, and drain valve can only usually be opened to lesser open
It spends (and not being avoided that high-temperature steam is discharged into site environment still), therefore needs to wait long period (single-row about to need 10 hours) ability
Work is isolated in the draining of completion system, significantly reduces working efficiency and affects the safe mass of site environment.
Summary of the invention
The purpose of this utility model is to provide a kind of electronic main feed pump system overhauls of nuclear power plant with quickly isolating device,
The apparatus structure is simple and is able to achieve and quickly isolates, and greatly shortens isolation time involved in service work, and high temperature is avoided to steam
Vapour is discharged into site environment, improves the safety, quality and level of efficiency of service work.
In order to achieve the above objectives, technical solution adopted in the utility model is：
A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device, the cold water side entrance of cooler and routine
First isolating valve is set between the desalination water distribution system of island, is drained into collecting-tank after the water in cooler is cooled；Hot water row
It puts public main pipe and receives the hot water discharged from the first water supply pump group, the second water supply pump group, third water supply pump group；First water supply
Pump group and hot water, which discharge, is arranged third isolating valve between public main pipe；Second water supply pump group and hot water discharge to be set between public main pipe
Set the 4th isolating valve；Third water supply pump group and hot water, which discharge, is arranged the 5th isolating valve between public main pipe；Hot water discharges public mother
Second isolating valve is set on pipe gas relief line.
The first water supply pump group includes preposition pumping up the first throttle orifice plate for being sequentially connected in series arrangement, in first from first
Between filter, the first feed pump；First intermediate filter and hot water, which discharge, is arranged third isolating valve between public main pipe.
The second water supply pump group includes preposition pumping up the second restricting orifice for being sequentially connected in series arrangement, in second from second
Between filter, the second feed pump；Second intermediate filter and hot water, which discharge, is arranged the 4th isolating valve between public main pipe.
The third water supply pump group includes pumping up the third restricting orifice for being sequentially connected in series arrangement, in third from third is preposition
Between filter, third feed pump；Third intermediate filter and hot water, which discharge, is arranged the 5th isolating valve between public main pipe.
The second isolation valve position is higher than the horizontal plane that hot water discharges public main pipe.
It is had the beneficial effect that acquired by the utility model：
The utility model carries out the high warm water discharge after electronic main feed pump system shutdown by introducing conventional island demineralized water
It is quickly cooled down, the flow drainage for keeping electronic main feed pump system bigger is simultaneously cooled down with faster rate, greatly shortens inspection
The isolation time of work is repaired, the safe mass for improving service work efficiency and site environment is horizontal.
(1) safe mass for improving work on the spot is horizontal.The cooling heel row of high-temperature water that system gives off is put, is avoided
High-temperature-hot-water or steam, which largely discharge, causes personnel or the equipment incident of injury or high-temperature steam to lead to the fire-fighting probe accidentally things such as spray
Part.
(2) efficiency of maintenance isolation work is improved.Because System drainage is by being fully cooled, not in isolation of system draining
High-temperature water or discharge of steam are had to scene, therefore emission flow can be increased.According to answering for certain domestic million kilowatt nuclear power factory
With practice, after the device, the time of electronic main feed pump System drainage isolation can reduce about 80%.
(3) apparatus structure is simple, operation is easy, convenient for grasping and promoting the use of.
Detailed description of the invention
Fig. 1 is the electronic main feed pump system overhaul of nuclear power plant with quickly isolating structure drawing of device；
In figure：1, conventional island desalination water distribution system；2, the first isolating valve；3, cooler；4, collecting-tank；5, the second isolation
Valve；6, the first fore pump；7, first throttle orifice plate；8, the first intermediate filter；9, the first feed pump；10, third isolating valve；
11, the second fore pump；12, the second restricting orifice；13, the second intermediate filter；14, the second feed pump；15, the 4th isolating valve；
16, third fore pump；17, third restricting orifice；18, third intermediate filter；19, third feed pump；20, the 5th isolating valve.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the electronic main feed pump system overhaul of nuclear power plant described in the utility model includes with device is quickly isolated
Cooler 3, conventional island desalination water distribution system 1, hot water discharge public main pipe, hot water discharges public main pipe gas relief line, first
Water supply pump group, the second water supply pump group, third water supply pump group, collecting-tank 4.
First isolating valve 2, cooler 3 are set between the cold water side entrance and conventional island desalination water distribution system 1 of cooler 3
In water it is cooled after drain into collecting-tank 4；Hot water discharges public main pipe and receives from the first water supply pump group, the second water supply
The hot water that pump group, third water supply pump group are discharged；First water supply pump group includes being sequentially connected in series the first of arrangement from the first fore pump 6
Restricting orifice 7, the first intermediate filter 8, the first feed pump 9；Second water supply pump group includes successively going here and there from the second fore pump 11
Join the second restricting orifice 12, the second intermediate filter 13, the second feed pump 14 of arrangement；Third water supply pump group includes before third
Set 16 third restricting orifice 17, third intermediate filter 18, the third feed pumps 19 for being sequentially connected in series arrangement of pump；First intermediate mistake
Filter 8 and hot water, which discharge, is arranged third isolating valve 10 between public main pipe；Second intermediate filter 13 discharges public mother with hot water
4th isolating valve 15 is set between pipe；Third intermediate filter 18 and hot water, which discharge, is arranged the 5th isolating valve between public main pipe
20；Hot water, which discharges, is arranged the second isolating valve 5 on public main pipe gas relief line, which is higher than the level that hot water discharges public main pipe
Face, to realize that hot water discharges the deflation function of public main pipe.
Steps are as follows for the use of the utility model：
The use step of device when (1) first water supply pump group is isolated
The first isolating valve 2 is opened, checks that the cold water side water outlet of confirmation cooler 3 is normal；Third isolating valve 10 is opened, so as to
The hot water of first water supply pump group is flowed by the first intermediate filter 8 to the hot water side of cooler 3, and cold in cooler 3
But it is drained into collecting-tank 4 afterwards；The second isolating valve 5 is opened, the gas of hot water main pipe side is drained, improves the heat exchange of cooler 3
Efficiency；After the high-temperature water in the first water supply pump group pipeline drains, the first isolating valve 2 is closed, work terminates.
The use step of device when (2) second water supply pump groups are isolated
The first isolating valve 2 is opened, checks that the cold water side water outlet of confirmation cooler 3 is normal；The 4th isolating valve 15 is opened, so as to
The hot water of first water supply pump group is flowed by the second intermediate filter 13 to the hot water side of cooler 3, and cold in cooler 3
But it is drained into collecting-tank 4 afterwards；The second isolating valve 5 is opened, the gas of hot water main pipe side is drained, improves the heat exchange of cooler 3
Efficiency；After the high-temperature water in the second water supply pump group pipeline drains, the first isolating valve 2 is closed, work terminates.
(3) the use step of device when third water supply pump group is isolated
The first isolating valve 2 is opened, checks that the cold water side water outlet of confirmation cooler 3 is normal；The 5th isolating valve 20 is opened, so as to
The hot water of third water supply pump group is flowed by third intermediate filter 18 to the hot water side of cooler 3, and cold in cooler 3
But it is drained into collecting-tank 4 afterwards；The second isolating valve 5 is opened, the gas of hot water main pipe side is drained, improves the heat exchange of cooler 3
Efficiency；After the high-temperature water in third water supply pump group pipeline drains, the first isolating valve 2 is closed, work terminates.
(4) the use step of device when two or three pump groups are isolated simultaneously
The first isolating valve 2 is opened, checks that the cold water side water outlet of confirmation cooler 3 is normal；
Two pump groups are isolated simultaneously：Open the corresponding isolating valve of two pump groups (two valves in isolating valve 10/15/20
Door), so that the hot water of pump group is flowed by intermediate filter (two in 8/13/18) to the hot water side of cooler 3, and cold
But it is drained into collecting-tank 4 after being cooled in device 3；
Three pump groups are isolated simultaneously：The corresponding isolating valve 10 of three pump groups, isolating valve 15 and isolating valve 20 are opened, so as to three
The hot water of a pump group is flowed by intermediate filter (8/13/18) to the hot water side of cooler 3, and is cooled in cooler 3
After drain into collecting-tank 4；
The second isolating valve 5 is opened, the gas of hot water main pipe side is drained, improves the heat exchange efficiency of cooler 3.
After the high-temperature water in pump group pipeline drains, the first isolating valve 2 is closed, work terminates.
Claims (5)
1. a kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device, it is characterised in that：The cold water side of cooler
First isolating valve is set between entrance and conventional island desalination water distribution system, drains into collecting-tank after the water in cooler is cooled
In；Hot water discharges public main pipe and receives from the first water supply pump group, the second water supply pump group, the heat of third water supply pump group discharge
Water；First water supply pump group and hot water, which discharge, is arranged third isolating valve between public main pipe；Second water supply pump group and hot water discharge are public
With the 4th isolating valve of setting between main pipe；Third water supply pump group and hot water, which discharge, is arranged the 5th isolating valve between public main pipe；Heat
Water, which discharges, is arranged the second isolating valve on public main pipe gas relief line.
2. the electronic main feed pump system overhaul of nuclear power plant according to claim 1 is with quickly isolating device, it is characterised in that：
The first water supply pump group includes preposition pumping up the first throttle orifice plate for being sequentially connected in series arrangement, the first intermediate filtered from first
Device, the first feed pump；First intermediate filter and hot water, which discharge, is arranged third isolating valve between public main pipe.
3. the electronic main feed pump system overhaul of nuclear power plant according to claim 1 is with quickly isolating device, it is characterised in that：
The second water supply pump group includes preposition pumping up the second restricting orifice for being sequentially connected in series arrangement, the second intermediate filtered from second
Device, the second feed pump；Second intermediate filter and hot water, which discharge, is arranged the 4th isolating valve between public main pipe.
4. the electronic main feed pump system overhaul of nuclear power plant according to claim 1 is with quickly isolating device, it is characterised in that：
The third water supply pump group includes pumping up the third restricting orifice for being sequentially connected in series arrangement, third intermediate filtered from third is preposition
Device, third feed pump；Third intermediate filter and hot water, which discharge, is arranged the 5th isolating valve between public main pipe.
5. the electronic main feed pump system overhaul of nuclear power plant according to claim 1 is with quickly isolating device, it is characterised in that：
The second isolation valve position is higher than the horizontal plane that hot water discharges public main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820560969.8U CN208111100U (en) | 2018-04-19 | 2018-04-19 | A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820560969.8U CN208111100U (en) | 2018-04-19 | 2018-04-19 | A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208111100U true CN208111100U (en) | 2018-11-16 |
Family
ID=64118262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820560969.8U Active CN208111100U (en) | 2018-04-19 | 2018-04-19 | A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208111100U (en) |
-
2018
- 2018-04-19 CN CN201820560969.8U patent/CN208111100U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111121483B (en) | Loop system for power station, flushing method of loop system and power station with loop system | |
| CN208111100U (en) | A kind of electronic main feed pump system overhaul of nuclear power plant is with quickly isolating device | |
| CN206267892U (en) | Turbo-generator Set steam circulation | |
| CN209706597U (en) | A kind of air cooling system with energy recovery process | |
| CN209602297U (en) | A kind of circulating water of marsh gas generating set processing system | |
| CN110486709A (en) | A kind of nuclear power station steam generator drainage | |
| CN204851350U (en) | Utilize living water heating system of power plant's exhaust steam waste heat | |
| CN214671843U (en) | Cold chain system of nuclear power station | |
| CN211147402U (en) | Heat energy recovery equipment combination for high-temperature wastewater of pasteurization tank | |
| RU2697652C1 (en) | Method and system of bringing a nuclear power plant into a safe state after extreme impact | |
| WO2013157989A1 (en) | System of leakage drains for a main circulating pump assembly | |
| CN211012058U (en) | Self-contained power station cooling system | |
| CN210740372U (en) | Large-scale generating set high back pressure steam-driven feed pump control system | |
| CN203785053U (en) | Integrated device for heat supply of oil and gas field station yards | |
| CN215718993U (en) | Rapid cooling device used before maintenance of main feed pump of steam turbine of nuclear power station | |
| CN207584754U (en) | A kind of natural gas afterheat boiler for power generation system | |
| CN109883218A (en) | A kind of air cooling system and its operating method with energy recovery process | |
| CN111396156A (en) | Multi-unit heating system of nuclear power plant with steam side unit system and water side combined system | |
| CN221237853U (en) | High-temperature gas cooled reactor secondary loop flushing system | |
| CN205582510U (en) | Avionics cooling water system of floating nuclear power plant | |
| CN209180914U (en) | A kind of hydrophobic heating system as heat source of boiler blow-off | |
| CN218270333U (en) | Waste steam waste heat utilization system | |
| CN204880306U (en) | Crystal pulling workshop circulating water system | |
| CN213273930U (en) | Cement plant waste heat power generation overflow water treatment equipment and cement plant production system | |
| CN214745647U (en) | Anti-freezing system for boiler in cold area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |