CN209726852U - A kind of heated-air drying cleaning raising condenser vacuum device - Google Patents
A kind of heated-air drying cleaning raising condenser vacuum device Download PDFInfo
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- CN209726852U CN209726852U CN201920202613.1U CN201920202613U CN209726852U CN 209726852 U CN209726852 U CN 209726852U CN 201920202613 U CN201920202613 U CN 201920202613U CN 209726852 U CN209726852 U CN 209726852U
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- condenser
- water chamber
- pipeline
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- steam turbine
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Abstract
It is cleaned the utility model discloses a kind of heated-air drying and improves condenser vacuum device, it include steam turbine fast cooling device, condenser, air-heater, water chamber vacuum pump and air-introduced machine, the outlet of steam turbine fast cooling device is connected to by pipeline with the front water chamber of condenser, air-heater is connected to by pipeline with the front water chamber of condenser, it is connect by pipeline with water chamber vacuum pump at the top of the rear water chamber of condenser, it is connect by pipeline with air-introduced machine at the top of the rear water chamber of condenser, the front water chamber of condenser is connected with circulating water inlet, and the rear water chamber of condenser is connected with recirculated water return pipe；Pressure adjusting structure for adjusting compressed air is installed, pressure adjusting structure is pneumatic door, gas pressure reducer and isolating valve, and pneumatic door, gas pressure reducer and isolating valve are sequentially arranged on the pipeline on the pipeline of the front water chamber of the outlet and condenser of steam turbine fast cooling device.The beneficial effects of the utility model are without compressor emergency shutdown cleaning, run easy to operate, small investment, quick, improve condenser vacuum.
Description
Technical field
The utility model relates to energy saving of system renovation technique field, it is true that specifically a kind of heated-air drying cleaning improves condenser
Empty device.
Background technique
Condenser equipment is one of Important Auxiliary equipment of thermal power generation unit, and condenser vacuum has decision to unit economy
The influence of property.When normal operation, condenser vacuum is that the steam discharge of steam turbine is leaned on to take away heat by recirculated water in condenser, is condensed
Cheng Shui, in this heat exchanging process, volume reduces nearly 30,000 times suddenly, thus forms high vacuum；And incoagulable gas in steam
The air leaked at body and vacuum system imprecision, constantly takes away by air ejector or vacuum pump to maintain vacuum.Due to condensing
Device vacuum is by condenser cooling surface, heat transfer coefficient (heat transfer property, thermic load, cleanliness factor, air leakage rate), coolant water temperature
Many factors such as liter, cooling water inlet temperature influence.Wherein, some factors are lectotype selection design problems and are difficult to change.
But some factors are can to improve to adversely affect vacuum by means such as combustion adjustment, repair and maintenances, such as cooling tube
Cleanliness factor can be used robot in running and exist by taking the methods of chemical cleaning, high pressure water cleaning after a shutdown
The methods of line cleaning, rubber ball cleaning, above-mentioned cleaning method cuts both ways, and chemical cleaning pollution is big, costly, needs to shut down installation
Temporary system can clean；Effect is fine after high pressure water cleaning rinses, but cannot not hold time longly (1 month or so), and can only be
It is carried out after shutdown；Robot on-line cleaning is costly, and safety is not high, cooling tube is easily caused to leak；Rubber ball cleaning system dimension
Shield amount is big, and operating cost is high, and glueballs easily blocks cooling water pipe.
Utility model content
Against the above deficiency, the purpose of this utility model is just to provide a kind of heated-air drying cleaning raising condenser vacuum dress
It sets, the technical principle is simple, cleans without compressor emergency shutdown, runs easy to operate, small investment, quick, condenser vacuum is improved,
The technology has preferable application value in power industry.
The purpose of this utility model is that technical solution in this way is realized, a kind of heated-air drying cleaning improves condenser
Vacuum plant includes steam turbine fast cooling device, condenser, air-heater, water chamber vacuum pump and air-introduced machine, the steam turbine rapid cooling
The outlet of device is connected to by pipeline with the front water chamber of the condenser, before the air-heater is by pipeline and the condenser
The rear water chamber top of water chamber connection, the condenser is connect by pipeline with the water chamber vacuum pump, the rear water of the condenser
Ceiling portion is connect by pipeline with the air-introduced machine, and the front water chamber of the condenser is connected with circulating water inlet, the condensing
The rear water chamber of device is connected with recirculated water return pipe；
It is equipped on the outlet of the steam turbine fast cooling device and the pipeline of the front water chamber of the condenser for adjusting pressure
The pressure adjusting structure of contracting air, the pressure adjusting structure are pneumatic door, gas pressure reducer and isolating valve, the pneumatic door, gas decompression
Valve and isolating valve are sequentially arranged on the pipeline.
Further, the outlet of the steam turbine fast cooling device is with pressure adjusting structure on the pipeline of the front water chamber of the condenser
Two groups.
Further, check-valves and isolating valve are disposed on the pipeline of the air-heater and the condenser.
Further, it can also be connect with the air-introduced machine at the top of the rear water chamber of the condenser by pipeline.
Further, at the top of the rear water chamber of the condenser be disposed on the pipeline of the air-introduced machine check-valves and every
From valve.
By adopting the above-described technical solution, the utility model has the advantage that by implementing in unit is run
The half side isolation cleaning of condenser closes condenser cleaning side runner and recycles water entrance door, and opens each water chamber of condenser and discharge water
Air relief drains water.It opens steam turbine fast cooling device (or air-heater) and hot wind is introduced into condenser front water chamber lower part, in condensing
Use vacuum pump or air-introduced machine by outside gas discharge chamber after device at the top of water chamber, guidance air orderly passes through Cooling Tubes of Condenser, to pipe
The dirt of inner wall carries out rapid draing, causes dirt cracking, removing.Condenser runner circulation water entrance door is finally opened to carry out
The dirt of cooling inside pipe wall removing is rinsed well, improves condenser heat exchange efficiency, and then improve condenser vacuum by water flowing, from
And improve unit economy.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book and claims are achieved and obtained.
Detailed description of the invention
The Detailed description of the invention of the utility model is as follows.
Fig. 1 is that heated-air drying cleaning improves condenser vacuum apparatus structure schematic diagram.
Fig. 2 is the pipeline jointing construction schematic diagram of condenser.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1 to Figure 2, it is cleaned the utility model discloses a kind of heated-air drying and improves condenser vacuum device, In
When compressor emergency shutdown overhauls, the pipeline all the way (Φ 108 × 4) that steam turbine fast cooling device 1 exports meets A, the B for leading to condenser 2 respectively
Runner front water chamber circulating water inlet, and need that gas pressure reducer and pneumatic door are installed on pipeline, compressed air after heating is passed through
Decompression is higher than 5-10 DEG C of cleaning side exhaust temperature with temperature and pressure is passed through condensing lower than the hot wind of recirculated water actual motion pressure
2 front water chamber of device.To ensure that compressed air pressure regulation is reliable, pressure reducing valve needs to design two-way, the using and the reserved, and to add pressure reducing valve
Afterwards pressure height tripping steam turbine fast cooling device 1 (being higher than recirculated water actual motion pressure), connection closes pneumatic door before pressure reducing valve, prevents sky
Has channeling, which enters to run runner, to be caused circulating water flow interruption or deficiency and causes chaser.Scene has been utilized at the top of water chamber after condenser 2
Some 5 equipment of water chamber vacuum pump is aspirated, and keeps hot-air proper flow, it is cooling that guidance hot-air orderly passes through condenser 2
It is dry that pipe carries out dirt.
The air-heater 3 is connected to by pipeline with the front water chamber of the condenser 2, at the top of the rear water chamber of the condenser 2
It is connect by pipeline with the water chamber vacuum pump 5, is connected at the top of the rear water chamber of the condenser 2 by pipeline and the air-introduced machine 4
It connects.The front water chamber of the condenser 2 is connected with circulating water inlet, and the rear water chamber of the condenser 2 is connected with recirculated water return water
Check-valves and isolating valve are disposed on pipe, the air-heater 3 and the pipeline of the condenser 2.The rear water of the condenser 2
Check-valves and isolating valve are disposed on the pipeline of ceiling portion and the air-introduced machine 4.
1) working principle of the utility model is:
This technology implements the half side isolation of condenser 2 to the silt of cooling inside pipe wall attachment, aquatic suitable for unit operation
The soft dirt such as object foundry loam is cleaned, because of aquatic organisms most of in dirt meeting when leaving water, temperature reaching 40 DEG C to 50 DEG C
Death, and in air medium can it is gradual drying, shrink until from tube wall remove.It is being passed through 35-55 DEG C of temperature and temperature height
In the hot wind of 5-10 DEG C of side exhaust temperature of cleaning, the soft dirt that tube wall is generally attached to after 3-4 hours will be cracked, shell
From.
2) cooling tube heated-air drying cleaning step in the operation of condenser 2
1. must be operated by operation order sequence when operation, and make a record.
2. will prepare to deactivate 2 ball cleaning apparatus of side condenser and receive chou beam, rubber ball system is out of service, and by the glueballs
Clean it is program-controlled exit, and stop Rubber ball pump electrical source of power.
3. connection is worth long load shedding to 75% or less according to unit vacuum condition.
4. high and low pressure bypath system is placed in manual control mode, and check confirmation in closed position.
5. suitably opening big operation 2 circulating water intake door of side condenser and outlet portal, circulating water intake pressure change is paid attention to.
6. the circulation water entrance door of deactivated side condenser 2 is gradually turned down, until closing entirely.Stop deactivating side after all going well
The circulation water entrance door power supply of condenser 2, and hang " quiescing " board.
7. can optionally stop a circulating pump if two pump operating cycles.
8. by deactivated 2 water chamber of side condenser emptying valve opening foot.
It discharges water 9. opening and deactivating the 2 water chamber wicket pressure release of side condenser.
10. the stringent operating procedure for pressing operating standard, water chamber is true to water chamber after opening condenser 2 after hydraulic pressure drops to " 0 "
Sky 5 inlet valves of pump, start water chamber vacuum pump 5.It opens fast cooling device and arranges big valve, open 1 inlet valve of steam turbine fast cooling device,
Start steam turbine fast cooling device 1, fast cooling device outlet temperature is adjusted to 45 DEG C or so (according to cleaning side exhaust temperature and the temperature difference
It is required that carrying out wind-warm syndrome adjustment).The pressure reducing valve of fast cooling device to 2 front water chamber admission line of condenser is completely closed, pressure reducing valve is opened
Isolating door afterwards opens pneumatic door before pressure reducing valve, slowly adjustment decompression downstream pressure, and hot-air is slowly introducing water before condenser 2
Interior, observe it is normal after close each water chamber and discharge water air relief, pays attention to paying close attention to decompression downstream pressure real no more than recirculated water
Border operating pressure keeps a close eye on 2 vacuum of condenser ≮ 85kPa, and exhaust temperature is no more than 54 DEG C, if occurring during isolation true
Sky drop should stop operation immediately, be restored.Lead to hot wind time general control at 3-4 hours.To accelerate cleaning speed, according to
Vacuum condition can suitably adjust load to adjust exhaust temperature.
Check that drop a hint middle hot steam of 2 water chamber of condenser disappears, cooling tube internal dirt has been cracked, has removed, hot air drying
Dry qualification.After 2 cooling tube heated-air drying of condenser, deactivate steam turbine fast cooling device 1 and water chamber vacuum pump 5, close inlet valve and
It is evacuated isolating door.
Close 2 water chamber of condenser and pipeline wicket.
After the circulation water entrance door power transmission of multiple labour side condenser 2, the water filling of 2 intake gate of condenser is slightly opened.
It is closed after being vented the outflow of valve water breakthrough in recirculated water inlet and outlet pipes.
2 water-supplying chamber of condenser closes emptying valve after draining air, opens big 2 intake gate of condenser.Condenser 2 follows
After ring water inlet door standard-sized sheet, outlet portal is slowly opened, and gradually closes another runner exit door, maintains circulating water outlet main-piping pressure
Stablize.
It adjusts 2 recirculated water two sides of condenser and goes out water valve, so that output water temperature is average.
After 2 recirculated water water side of condenser investment is normal, slowly opens stoppage in transit side condenser 2 and vacuumize door until opening foot.
Restore unit load as needed depending on 2 vacuum condition of condenser, or carries out other side cleaning.
3) points for attention:
1. selecting the opportunity of 2 cooling tube heated-air drying of condenser cleaning, when Selection utilization night peak load regulation, condenser 2
Unit vacuum is met the requirements when the operation of unilateral side.
It has to steadily, prevent quantity of circulating water deviation from causing unit vacuum 2. stopping condenser 2 and cleaning the operation of side recirculated water
Bust.
3. load can be used as the important means of adjustment exhaust temperature.
4. delivery temperature is reduced when water flowing as far as possible.Delivery temperature must drop to 50 DEG C hereinafter, slightly opening or cleaning washes side condensing manually
2 recirculated water of device passes in and out water valve to 2 water-filling of condenser, and controls flow of inlet water, to prevent the swollen mouth of cooling water pipe because temperature drop it is too fast caused by
Leakage.
5. reinforcing the maintenance and overhaul management to condenser 2 into and out of water valve.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.
Claims (4)
1. a kind of heated-air drying cleaning improves condenser vacuum device, which is characterized in that include steam turbine fast cooling device, condensing
Device, air-heater, water chamber vacuum pump and air-introduced machine, before the outlet of the steam turbine fast cooling device is by pipeline and the condenser
Water chamber connection, the air-heater are connected to by pipeline with the front water chamber of the condenser, logical at the top of the rear water chamber of the condenser
It crosses pipeline to connect with the water chamber vacuum pump, be connect by pipeline with the air-introduced machine at the top of the rear water chamber of the condenser, institute
The front water chamber for stating condenser is connected with circulating water inlet, and the rear water chamber of the condenser is connected with recirculated water return pipe；
It is equipped in the outlet of the steam turbine fast cooling device and the pipeline of the front water chamber of the condenser empty for adjusting compression
The pressure adjusting structure of gas, the pressure adjusting structure be pneumatic door, gas pressure reducer and isolating valve, the pneumatic door, gas pressure reducer and
Isolating valve is sequentially arranged on the pipeline.
2. heated-air drying cleaning according to claim 1 improves condenser vacuum device, it is characterised in that: the steam turbine
The outlet of fast cooling device is two groups with pressure adjusting structure on the pipeline of the front water chamber of the condenser.
3. heated-air drying cleaning according to claim 1 improves condenser vacuum device, it is characterised in that: the air-heater
Check-valves and isolating valve are disposed with on the pipeline of the condenser.
4. heated-air drying cleaning according to claim 1 improves condenser vacuum device, it is characterised in that: the condenser
Rear water chamber at the top of be disposed with check-valves and isolating valve on the pipeline of the air-introduced machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202613.1U CN209726852U (en) | 2019-02-18 | 2019-02-18 | A kind of heated-air drying cleaning raising condenser vacuum device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202613.1U CN209726852U (en) | 2019-02-18 | 2019-02-18 | A kind of heated-air drying cleaning raising condenser vacuum device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209726852U true CN209726852U (en) | 2019-12-03 |
Family
ID=68683034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920202613.1U Expired - Fee Related CN209726852U (en) | 2019-02-18 | 2019-02-18 | A kind of heated-air drying cleaning raising condenser vacuum device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209726852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578775A (en) * | 2020-04-26 | 2020-08-25 | 国家能源集团宁夏煤业有限责任公司 | Descaling device and descaling method for tube type heat exchanger |
-
2019
- 2019-02-18 CN CN201920202613.1U patent/CN209726852U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578775A (en) * | 2020-04-26 | 2020-08-25 | 国家能源集团宁夏煤业有限责任公司 | Descaling device and descaling method for tube type heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20191203 Termination date: 20220218 |