CN206346942U - A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing - Google Patents
A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing Download PDFInfo
- Publication number
- CN206346942U CN206346942U CN201621486671.4U CN201621486671U CN206346942U CN 206346942 U CN206346942 U CN 206346942U CN 201621486671 U CN201621486671 U CN 201621486671U CN 206346942 U CN206346942 U CN 206346942U
- Authority
- CN
- China
- Prior art keywords
- filter
- water
- pressure
- main pipe
- manually
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing, the system, which is circularized, to be arranged in one end of existing primary filter screen flushing water main pipe and is disposed with the first filter and corresponding entrance manually-operated gate, outlet manually-operated gate, flushing pollution discharge manually-operated gate, and adds valve of pressure gauge, valve of pressure gauge and pressure switch, pressure switch after the filters to monitor the hydraulic pressure in lubricating system main pipe；Also it is arranged symmetrically in the other end of filter screen flushing water main pipe.When waterpower is less than setting value in main pipe, the standby flush water pump of interlocked startup to ensure before filter stable water pressure in flushing water main pipe, and ensures stable water pressure in water circulating pump seawater lubrication water system main pipe, maintains water circulating pump safe operation.The utility model is simple and practical, easy to maintenance, can safe and reliable, stably supply ultra-clean seawater needed for water circulating pump bearing lubrication, cooling, while meeting the valuable freshwater resources of saving and the double design requirement of environmental protection.
Description
Technical field
The present invention relates to being saved for System of Power Equipment in Power Plants, the seawater lubricating system of water-saving method, and in particular to Yi Zhongyan
The extra large ultra-clean seawater lubricating system of power plant cycle water pump bearing.
Background technology
Coastal Power Station circulation typically uses open type salt water cooling system, and water circulating pump (referred to as following pump) is steamer hair
The important auxiliary equipment of group of motors, recirculated cooling water is provided for turbine condenser, is to ensure that safe operation of power plant, energy efficiency
Important step, its equipment performance and operation conditions are significant to unit safety economical operation.
Coastal Power Station water circulating pump is fetched water in the forebay of seashore diversion duct, is provided and is followed for turbine condenser after boosting
Ring cooling water.The mixed-flow pump that this water pump can be typically extracted out using vertical rotor part, the axle of pump is longer, need to install bearing to prevent
Only pump shaft is rocked.Otherwise, during water pump operation pump shaft rock will cause vibration and damage equipment.Water circulating pump bearing typically uses rubber
Glue bearing, thordon bearings or import AR bearings etc., the fit clearance of bearing and pump shaft is smaller, and such as unilateral gap of AR bearings is 0.10
~ 0.15mm, in order to prevent bearing and pump shaft from wearing and tearing, generating heat, it is necessary to be passed through bearing lubrication cooling water.
The water circulating pump of early stage operation unit is because seawater corrosion resistance material is more expensive and lacks, and the material of selection can not be complete
Accomplish to prevent seawater corrosion, add freshwater resources enrich, therefore design when more than using open type industry water (fresh water treatment is qualified) come
Bearing and cooling motor are lubricated, and design installs return pipe additional by the mode of industrial Water Sproading.But because return pipe is longer, easy quilt
Water circulating pump current are thrust, and easily cause water pump to vibrate.In addition, seawater enters industrial water system by return pipe, water can be caused
Matter deteriorates and sodium ions content is exceeded, causes motor upper bearing (metal) grease chamber cooler copper tubes to corrode leak, bearing burnt will when serious
Jeopardize the safe operation of water circulating pump.Therefore, there is enterprise's suggestion to cancel return pipe, the part industry water is not reclaimed, will be lubricated cold
But water is immediately discharged to the inlet chamber of water pump through inner connecting tube, then it is outer be discharged to not reclaim in seawater use.But this method can cause
Industrial water consumption is big, causes great fresh water to waste.Hereafter, to reduce the consumption of industry water, part power plant is used in recirculated water
Cooling is lubricated during pump startup with industry water, stops providing sweet water after normal operation, the seawater changed in pump is lubricated, with
Reach saving fresh water dosage purpose.It is well known that can add containing debris such as substantial amounts of marine growth, silt stone and shells in seawater
The abrasion of fast bearing and pump shaft, thus frequently result in pump shaft, bearing damage, the failure such as support of bearing Broken bolt occurs.It has impact on
The operation of circulation, increases repair and maintenance workload, and spare unit replacement cost is also higher.
With seawater corrosion resistance material manufacture technological progress, Coastal Power Station water circulating pump is overall or contact seawater part is adopted
With seawater corrosion resistance material material.At present, use seawater as water pump bearing lubrication water in design, typically there is following several
The mode of kind：(1) extra large water lubriucated bearing is introduced directly at water circulating pump discharge connection.But the lubrication water pressure of this kind of mode is low,
Bearing can not be fed, and water is unprocessed, it is dirtier, bearing wear can be aggravated；(2) fetched water in the outlet main pipe of water circulating pump,
Install pipeline pump additional to boost to seawater, and install filter screen additional to sea water filter, the seawater after boosting, filtering is used as bearing lubrication water.But
Which need to increase device systems investment, increase rotating machinery, and maintenance is big；(3) main pipe is exported in primary filter screen flush water pump
Upper water intaking, as bearing lubrication water after the strainer filtering of centralized arrangement, but which does not account for primary filter screen and needs to isolate
Maintenance etc., does not take the reliability of corresponding measure sophisticated systems yet, it is impossible to ensure system it is continuous it is safe and reliable, do not stop confession
Water.In addition, when the filter screen type selecting of mode is planted in (2), (3), not enough, seawater impurity is more after filtering for filtering accuracy, and granularity surpasses
Mark, can aggravate bearing wear.In addition, some filter screens are also without automatic cleaning function, need to often stop transport cleaning, add and safeguard work
Measure.
Zhanjiang Power Plant total installation of generating capacity is 4 × 300MW, is coal-fired Turbo-generator Set, circulating water subordination open type seawater
Cooling system.4 units configure 8 water circulating pumps altogether, and model is 7LKSA-21A, are vertical, single-stage, stator water outlet, rotor portions
The mixed-flow pump that part can be extracted out, rated capacity 21672m3/h；Lift is up to 21 m.
The former water circulating pump bearing of Zhanjiang Power Plant uses rubber shaft bearing, and lubrication water is to use open type industry water.Work
The moisturizing of industry water supplies bearing cooling to elevated tank, after boosting to 0.3~0.35MPa through bearing cooling water pump and lubricated.Wherein
The bearing cooling water of motor is recycled to lower water box, and beating to be recycled to elevated tank to cooling tower cooler and circulate through low level water pump makes
With.And the lubrication water of water circulating pump rubber shaft bearing is immediately discharged to the inlet chamber of water pump through inner connecting tube, then it is discharged to seawater outside
In, do not reclaim and use, cause industrial water consumption big.
To reduce the consumption of industry water, rubber shaft bearing is changed to that material is harder, more wear-resisting, resistance to sea by equipment manufacturer's suggestion
The thordon bearings of aqueous corrosion.Suggestion is lubricated cooling with industry water when water circulating pump starts simultaneously, stops after normal operation
Provide sweet water, the seawater in pump is lubricated, to save fresh water dosage.As it was previously stated, because in seawater containing a large amount of marine growths,
The debris such as silt stone and shell, accelerates the abrasion of bearing and pump shaft, causes that pump shaft, bearing damage, axle often occur in operation
The phenomena of the failure such as support Broken bolt are held, the safe operation of circulation is not only had influence on, repair and maintenance amount is increased, also increases
Spare unit replacement costs.
Followed in addition, industry water supplies 8 after boosting to 0.3~0.35MPa through bearing cooling water pump by DN25 feed pipe
Ring water pump bearing is cooled down and lubricated, and is computed and is calculated per the industrial water consumption up to 1200t/d arranged beyond the highest heavens.The outer discharge capacity of fresh water
Greatly, elevated tank rate of water make-up is also resulted in big.When elevated tank moisturizing not in time when, elevated tank water level will decline quickly, sternly
Cause during weight all circulation-water pump electric machines because lose bearing cooling water and caused by trip, or even cause power cut of whole factory, have a strong impact on
Generating set safe operation is arrived.
In a word, the bearing lubrication mode of existing water circulating pump can not meet safe and reliable, energy-saving and water-saving and environmental protection etc. and want
Ask, in the urgent need to making improvements.Improved thinking is：Change the bearing lubrication mode of water circulating pump, reduce fresh water dosage.
The freshwater resources of preciousness so can have both been saved, elevated tank can have also been solved and low water level occurred and threatened circulation fortune safely
Capable hidden danger.
The content of the invention
The purpose of this utility model is to avoid the weak point in above-mentioned background technology to be circulated there is provided a kind of Coastal Power Station
The ultra-clean seawater lubricating system of water pump bearing, to ensure meeting existing water circulating pump bearing lubricating system (seawater lubrication) constant feelings
Under condition, the requirement such as safe and reliable, energy-saving and water-saving and environmental protection is met, and reduce water circulating pump bearing wear-out failure.
The utility model is realized at least through one of following technical scheme.
A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing, whole system is relative to flushing water main pipe cyclization
Shape bilateral symmetry：The first filter is disposed with one end of the existing first ~ the 8th primary filter screen flushing water main pipe and corresponding
Entrance manually-operated gate, outlet manually-operated gate, flushing pollution discharge manually-operated gate, and add valve of pressure gauge after the filters
Door, valve of pressure gauge and pressure switch, pressure switch are to monitor the hydraulic pressure in lubricating system main pipe；The first ~ the 8th 1
The other end of secondary filter screen flushing water main pipe has also been arranged symmetrically the second filter and corresponding entrance manually-operated gate, outlet manually
Valve, flushing pollution discharge manually-operated gate, and also install after filter valve of pressure gauge, valve of pressure gauge and pressure switch additional
Door, pressure switch are to monitor the hydraulic pressure in lubricating system main pipe.
Symmetrical structure two ends of the present utility model filter outlet is unified into the ultra-clean seawater supply system of a collar-shaped, after filtering
Sea water particle degree can reach below 0.20mm, for being supplied to the first ~ the 8th water circulating pump to be used as bearing lubrication cooling water.Just
Often during operation, the using and the reserved set filter and corresponding entrance manually-operated gate, outlet manually-operated gate etc. to facilitate system in inspection
Isolation when safeguarding is repaiied, to ensure during wherein a set of filter repair and maintenance, another set of filter system remains to remain annular female
Pipe pressure is stable, and uninterrupted bearing lubrication of supplying is to the first ~ the 8th water circulating pump.
Further, the first filter, the second filter are a kind of to be required to select according to characteristic of ocean and systematic parameter
High refined filtration laminated filter, it is adaptable to marine site high-turbidity seawater run media environment, for the sea sand in filtering sea, shell,
The debris such as sea grass, the sea water particle degree after filtering goes out the flow of saliva and the design load of outlet pressure to accord with below 0.20mm
Close the operational factor requirement of lubrication water system to be defined, such as flow is 60 m3/ h, outlet pressure is 0.3~0.35MPa.Filter sheet
Body, filter screen and valve use sea water resistance material, and with enough intensity, can under 0.5MPa differential pressure action normal work.
Often containing 6 groups of filter elements, 6 groups of filter element parallel runnings in set filter, and dirt eliminating function is cleaned with automatic, to filter
Device does not stop when cleaning, it is ensured that the continuous supply of water circulating pump bearing lubrication water.
Further, the first filter, the second filter use fully automatic operation mode, with automatic back-flushing function.
First filter, the second filter are controlled by corresponding PLC control system, pass through the first filter manually-operated gate and the second mistake
Magnetic valve, the magnetic valve of the second filter of filter manually-operated gate accordingly to the first filter provide control compressed air；Often
Backwash gas movable valve is installed before group filter element；Controlled before and after filter inlet provided with pressure difference switch with transmitting a signal to PLC
System processed, when pressure difference is more than setting value, the backwash gas movable valve of every group of filter element is closed according to the order of setting automatically,
And automatically anti-cleaning and discharge rubbish can be carried out, keep filter cleaning and ensure not stop during cleaning.
Further, the utility model rinses the seawater of water system main pipe using the existing first ~ the 8th primary filter screen,
On the basis of this, the ultra-clean seawater lubricating system is only increased newly.It is the first filter side in the side of the symmetrical structure, with
The seawater that one flush water pump, the 4th flush water pump, the 6th flush water pump, the 8th flush water pump are extracted after primary filter screen is supplied to the
One ~ the 8th primary filter screen flushing water main pipe, flush water pump is standby with three using one, and the opposite side of the symmetrical structure is also using same
Structure, to ensure the first filter, water source and stable water pressure used in the second filter；
Further, in order to ensure that lubrication water system main-piping pressure after filtering is stable, in the first filter, the second mistake
Install the pressure gauge and pressure switch additional to monitor pressure in annular main pipe after filter；When lubrication jellyfish inner pipe water pressure≤
During 0.2MPa setting values, the standby flush water pump of interlocked startup, it is ensured that flushing water main-piping pressure is stable before filter, and ensure to supply
Jellyfish inner pipe water pressure should be lubricated to the seawater of water circulating pump stable, to ensure water circulating pump safe operation.
Further, the annular main pipe of lubricating system is by exporting the bearing of manually-operated gate and the first ~ the 8th water circulating pump
Water pipe connection is lubricated, water outlet is supplied to the first ~ the 8th water circulating pump as bearing lubrication cooling water.Manually-operated gate is exported with respectively following
Corresponding entrance manually-operated gate is provided between the bearing lubrication water pipe of ring water pump.
Equipment in the system of the utility model and contact with sea water should be set all using the material of seawater corrosion resistance with reducing
Standby corrosion, improves system reliability.
Filter is arranged symmetrically in the first ~ the 8th flushing water main pipe by the utility model using annular water supply network system
Two ends, it is ensured that the first ~ the 8th flush water pump is when isolating maintenance, and main pipe will not also cut off the water supply.Filter is designed as the using and the reserved fortune
Line mode, can individually isolate maintenance, and the normal operation of system is not influenceed.Meanwhile, hydraulic pressure detection and interlock protection function are devised,
Ensure that lubrication water quality after filtering is qualified, granularity is in below 0.20mm.This design, can effectively ensure that flushing jellyfish
Pipe pressure is stable, uninterrupted supply bearing lubrication water, it is ensured that the safe operation of the first ~ the 8th water circulating pump.
The outlet of first filter and the second filter described in the utility model is unified into the ultra-clean seawater supply of a collar-shaped
System, the using and the reserved during normal operation.2 filters and its corresponding entrance manually-operated gate, outlet manually-operated gate etc. are set
It is the isolation repair and maintenance for convenience of system, can guarantee that another set of filter system maintains annular when to a set of filter service
Main-piping pressure is stable, uninterrupted supply bearing lubrication water, it is ensured that the safe operation of the first ~ the 8th water circulating pump.
Compared with prior art, the utility model has advantages below：
1st, using system provided by the utility model, any marine site high-turbidity seawater operation dielectric ring is gone for
Border.After the system filter process, ultra-clean seawater can be safely and reliably provided as water circulating pump bearing lubrication water,
Realization meets the requirement such as safe and reliable, energy-saving and water-saving and environmental protection.
2nd, filter is arranged symmetrically in the two of the first ~ the 8th flushing water main pipe by the system using annular water supply web frame
End, it is ensured that main pipe will not also cut off the water supply during the first ~ the 8th flushing water segregation maintenance；Filter is designed as the using and the reserved method of operation,
Maintenance can individually be isolated, the normal operation of system is not influenceed.And devise water pressure monitoring and interlock protection function, it is ensured that through filtering
Stable water pressure in lubrication water system main pipe afterwards.
3rd, using the laminated filter of high refined filtration, the sea water particle degree after filtering designs rate of discharge in below 0.20mm
For 60 m3/ h, outlet pressure reaches 0.3~0.35MPa, meets the operational factor requirement of lubrication water system.Often set filter is by 6 groups
High-precision filter filter element (2-1 and 12-1) composition parallel running, the automatic cleaning dirt eliminating function of band, plant maintenance amount is small.Filter
It can realize and not stop during cleaning, it is ensured that the constant and continuous supply of water quality of water circulating pump bearing lubrication water.
4th, using system provided by the utility model, newly added equipment small investment, it is possible to use current existing the first ~ the
Eight primary filter screens rinse the seawater of water system main pipe, increase ultra-clean seawater lubrication subsystem newly, are increased without the equipment such as boosting water pump,
The input of system equipment is reduced, it is simple and practical.
5th, using the seawater after ultra-clean filtering as water circulating pump bearing lubrication water, sea water particle degree exists after filtering
Below 0.20mm, can be prevented effectively from the abrasion of water circulating pump bearing and pump shaft, ensure the safe operation of water circulating pump.
6th, the method provided can produce good implementation result.Implemented using system schema provided by the utility model
Afterwards, original industrial colling is eliminated as water circulating pump bearing lubrication water using seawater, has saved the fresh water money of preciousness
Source, protects earth environment, there is very significant economic benefit and social benefit.
The invention will be further described with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing in example.
In figure：1- the first filter inlet manually-operated gates；The filters of 2- first；3- controls compressed air is to the first mistake
The manually-operated gate of filter；4- the first filter flushing pollution discharge manually-operated gates；5- the first filter outlet manually-operated gates；6- pressure gauges
Valve；7- pressure gauges；Valve of 8- pressure switches；9- pressure switches；10- lubrication jellyfish pipes discharge water manually-operated gate；11-
Second filter inlet manually-operated gate；The filters of 12- second；13- controls compressed air is to the second filter manually-operated gate；
14- the second filter flushing pollution discharge manually-operated gates；15- the second filter outlet manually-operated gates；Valve of 16- pressure gauges；17-
Pressure gauge；Valve of 18- pressure switches；19- pressure switches；20- first circulations water pump lubricates water inlet manually-operated gate；27-
8th water circulating pump lubricates water inlet manually-operated gate；The filter units of 2-1- first；2-2- the first Filter Back Washing gas
Movable valve；The filter differential pressures of 2-3- first are switched；The filter units of 12-1- second；The Filter Back Washings of 12-2- second
Operated pneumatic valve；The filter differential pressures of 12-3- second are switched；101- water circulating pumps；102- arranges trench；103- flushing water main pipes；104-
Flush water pump.
Embodiment
It is just super so that the utility model is in the transformation of Zhanjiang Power Plant water circulating pump bearing lubrication as an example below in conjunction with accompanying drawing
The embodiment of net seawater lubrication water system is described in detail.
As shown in figure 1, being the ultra-clean seawater lubrication water system structural representation of water circulating pump bearing of utility model.One
The ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing is planted, whole system circularizes symmetrical relative to flushing water main pipe
Structure：The first filter 2 is disposed with one end of the existing first ~ the 8th primary filter screen flushing water main pipe and corresponding entrance is manual
Valve 1, outlet manually-operated gate 5, flushing pollution discharge manually-operated gate 4, and valve 6 of pressure gauge, pressure are added after the filters
Power table 7 and pressure switch valve 8, a pressure switch（Pressure transmitter）9 to monitor the hydraulic pressure in lubricating system main pipe；
The other end of one ~ the 8th primary filter screen flushing water main pipe has also been arranged symmetrically the second filter 12 and corresponding entrance hand-operated valve
Door 11, outlet manually-operated gate 15, flushing pollution discharge manually-operated gate 14, and also install after filter valve 16 of pressure gauge, pressure additional
Valve 18 of power table 17 and pressure switch, pressure switch 19 are to monitor the hydraulic pressure in lubricating system main pipe.
The first filter 2 and the second filter 12 described in this example use fully automatic operation mode, with automatic backflushing
Wash function.Often set filter supporting PLC (PLC technology) control system (including solenoid valve control case, the output of 6 contacts,
220VAC power supplys etc.), pass through control compressed air to the first filter manually-operated gate 3 and control compressed air to the second mistake
Filter manually-operated gate 13 provides control compressed air to magnetic valve.Often set filter by 6 groups it is high-precision filter filter element (2-1,
12-1) constitute, backwash gas movable valve (2-2,12-2) is installed before every group of filter element (2-1,12-1)；Set before and after filter
There is pressure difference switch (2-3,12-3) to send a signal to PLC control system, when pressure difference is more than 3kPa setting values, according to setting
Program closes the backwash gas movable valve (2-2,12-2) of every group of filter element automatically in order, can perform automatically anti-cleaning and
Rubbish is discharged, filter cleaning is kept and ensures not stop during cleaning.
The utility model scheme is that the seawater of water system main pipe is rinsed using the existing first ~ the 8th primary filter screen, herein
On the basis of, the newly-increased main ultra-clean seawater lubrication subsystem being made up of filter is increased without the equipment such as boosting water pump, reduced
System equipment is put into, simple and practical.The course of work is：First ~ the 8th primary filter screen rinses water system main pipe by the first flushing water
Pump, the 4th flush water pump, the 6th flush water pump, the 8th flush water pump extract the seawater supply after primary filter screen, and water pump one uses three
It is standby, it is ensured that water source and stable water pressure.First filter 2, the second filter 12 are arranged symmetrically in the punching of the first ~ the 8th primary filter screen
The two ends of wash water system main pipe, can be from another when this configuration can facilitate certain the unit primary filter screen of certain one end need to isolate maintenance
Seawater is supplied in one end, it is ensured that water source and stable water pressure supply.
In order to ensure that lubrication water system main-piping pressure after filtering is stable, in the first filter 2 and the second filter 12
Pressure gauge (7,17) and pressure switch (9,19) are added in annular main pipe afterwards with monitoring system pressure.When lubrication water system
During main-piping pressure≤0.2MPa setting values, the standby flush water pump of interlocked startup, it is ensured that the first filter 2 and the second filter 12
Stable water pressure in preceding flushing water main pipe, it is ensured that stable water pressure in water circulating pump seawater lubrication water system main pipe, so as to ensure circulation
The safe operation of water pump.
The utility model is using annular lubrication water system main pipe arrangement, it is ensured that the first ~ the 8th shaft of circulating water pump
Hold the reliable supply of lubrication water.Water inlet manually-operated gate (20 ~ 27) is lubricated by the first ~ the 8th water circulating pump, ultra-clean profit is accessed
Sliding cooling water is to each water circulating pump, sea water particle degree is in below 0.20mm after filtering, it is to avoid water circulating pump bearing and pump shaft
Abrasion, it is ensured that the safe operation of water circulating pump.
Further implement ground：
1st, to ensure that main pipe will not also cut off the water supply during the first ~ the 8th flushing water segregation maintenance, in the first ~ the 8th flushing water main pipe
Two ends respectively pick out wash tub pipe DN100 all the way, through the first filter 2 or the second filter 12, (laminated filter, one uses one
Standby, filtering accuracy is 0.2mm, volume flow >=60m3/h；Band PLC controls, executing agency, blowdown motor-driven valve etc.) filter after,
Access the ring-like main pipe DN80 of water circulating pump bearing lubrication water system.
2nd, for convenience the first filter 2 and the second filter 12 isolation cleaning, filter it is forward and backward respectively install additional on the other hand
Dynamic gate valve (DN100, PN1.6)；
3rd, seawater is supplied to by 8 water circulating pumps (the first ~ the 8th recirculated water for DN25 feed pipe by nominal diameter
Pump), a separation valve door (DN25, PN1.6) is respectively installed additional on pipeline, and the former industry water cooling water for accessing water circulating pump bearing is blocked
Cancel.
4. install the annexes such as pressure gauge, pressure switch and Draw off valve and support of pipelines additional on pipeline.
5th, the PLC control system to the first filter 2 and the second filter 12 carries out part line and control circuit is installed.
It is the strong seawater of corrosivity to lubricate water system operation medium, system equipment all using the material of seawater corrosion resistance,
Equipment corrosion is reduced, system reliability is improved.
When Pipe installing walks pipe, it is desirable to reasonable disposition suspension and support, pipe is walked attractive in appearance.The welding requirements weld bond of pipeline is attractive in appearance, gold
Examine qualified, No leakage.
Use this programme put into operation flow for：
(1) before system puts into operation, confirm that primary filter screen rinses water system main-piping pressure normally, at least one flush water pump is normal
Operation, stand-by pump interlocking is thrown.
(2) check that first, second filter control power supply and control compressed air system input are normal.
(3) the first filter or the second filter inlet manually-operated gate are opened, a set of filter operation is put into, opens and rinse
Blowdown manually-operated gate, Manual test filter automatic backwash system is qualified, checks pressure stability after filter, opens filter
Manually-operated gate is exported to supply water to lubricating system.
(4) open bearing lubrication system main pipe Draw off valve to discharge water, be vented, check whether water quality granularity is qualified.Close
Water system main pipe Draw off valve is lubricated, checks lubrication water system pressure in 0.3~0.35MPa or so.Routine test pressure switch
Interlocking, connection flush water pump experiment, when lubricating water system main-piping pressure≤0.2MPa definite values, the standby flushing water of interlocked startup
Pump, it is ensured that flushing water main-piping pressure is stable before the filter of filter first and the second filter.
(5) according to the operation needs of each water circulating pump, bearing lubrication water system main pipe is opened to the hand-operated valve of each water pump
Door, put into water circulating pump bearing lubrication cooling water, check water circulating pump whether normal operation.
Implementation result is analyzed
Scheme eliminates industry water after implementing, and industrial fresh water dosage 1200t/d can be saved daily, saves fresh water dosage about in year
43.8 ten thousand tons, water rate presses 2.5 yuan/t per ton, about 109.5 ten thousand yuan of water rate is saved in year.
Wash water pump motor (power 37KW) longtime running after scheme is implemented, by daily increase by 20 hours, increase electricity consumption in 1 year
270,000 KWh are measured, by 0.5 yuan/KWh of electricity is often spent, increase by 13.5 ten thousand yuan of the electricity charge in year.Due to water pump longtime running, can reduce because sea grass,
The marine growths such as sea cowry block and cause the probability of fault of water pump, can reduce water pump maintenance and about 200,000 yuan of part replacement expense/
Year.Meanwhile, using ultra-clean seawater, reduce the probability of water circulating pump bearing wear damage failure, can reduce water pump maintenance and
Yuan/year of part replacement expense about 300,000.Therefore, income annual after transformation is：Ten thousand yuan of 109.5+20+30-13.5=146.
Economic benefit is considerable.
Table 1 below is the material citing that this example each part when implementing may be referred to use, specifically how the selection of material
It can be selected according to actual conditions, restriction implementation of the present utility model and protection domain are not used in below, it is only for reference.
Table 1
This programme has saved the freshwater resources of preciousness after implementing, there is very significant economic benefit and social benefit.Subtract
The probability of water circulating pump bearing wear damage failure is lacked, has improved circulation security reliability, the safety to unit is passed through
Ji operation is significant.
Claims (5)
1. a kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing, it is characterised in that whole system is relative to flushing water
Main pipe is circularized and bilateral symmetry：The first mistake is disposed with one end of the existing first ~ the 8th primary filter screen flushing water main pipe
Filter (2) and corresponding entrance manually-operated gate (1), outlet manually-operated gate (5), flushing pollution discharge manually-operated gate (4), and in filter
Valve (6) of pressure gauge, valve (8) of pressure gauge (7) and pressure switch, pressure switch (9) are added afterwards with monitoring
Hydraulic pressure in lubricating system main pipe；Second has also been arranged symmetrically in the other end of the first ~ the 8th primary filter screen flushing water main pipe
Filter (12) and corresponding entrance manually-operated gate (11), outlet manually-operated gate (15), flushing pollution discharge manually-operated gate (14), and
Also valve (16) of pressure gauge, valve (18) of pressure gauge (17) and pressure switch, pressure are installed after second filter (12) additional
Power switchs (19) to monitor the hydraulic pressure in lubricating system main pipe.
2. the ultra-clean seawater lubricating system of a kind of Coastal Power Station water circulating pump bearing according to claim 1, it is characterised in that：
First filter (2), the second filter (12) using filter laminated filter, often cover in filter containing 6 groups of filter elements (2-1,
12-1), 6 groups of filter element parallel runnings.
3. the ultra-clean seawater lubricating system of a kind of Coastal Power Station water circulating pump bearing according to claim 2, it is characterised in that：
First filter (2), the second filter (12) use fully automatic operation mode, and the first filter (2), the second filter (12) are
Controlled by corresponding PLC control system, it is corresponding by the first filter manually-operated gate (3) and the second filter manually-operated gate (13)
The magnetic valve of magnetic valve, the second filter (12) to the first filter (2) provides control compressed air；Every group of filtering list
Backwash gas movable valve (2-2,12-2) is installed before first (2-1,12-1)；Before and after filter inlet provided with pressure difference switch (2-3 and
12-3) to transmit a signal to PLC control system, when pressure difference is more than setting value, every group of mistake is closed according to the order of setting automatically
Filter the backwash gas movable valve (2-2,12-2) of unit.
4. the ultra-clean seawater lubricating system of a kind of Coastal Power Station water circulating pump bearing according to claim 1, it is characterised in that：
It is the first filter side in the side of the symmetrical structure, with the first flush water pump, the 4th flush water pump, the 6th flushing water
The seawater that pump, the 8th flush water pump extract after primary filter screen is supplied to the first ~ the 8th primary filter screen flushing water main pipe, flush water pump
Standby with three using one, the opposite side of the symmetrical structure also uses same structure, to ensure the first filter (2), the second mistake
Water source and stable water pressure used in filter (12)；Installed additional in the annular main pipe after the first filter (2), the second filter (12)
The pressure gauge (7,17) and pressure switch (9,19) are to monitor pressure；When lubrication jellyfish inner pipe water pressure≤0.2MPa setting values
When, the standby flush water pump of interlocked startup.
5. the ultra-clean seawater lubricating system of a kind of Coastal Power Station water circulating pump bearing according to claim 1, it is characterised in that：
The annular main pipe of lubricating system is connected by exporting manually-operated gate (5) with the bearing lubrication water pipe of the first ~ the 8th water circulating pump, is gone out
Corresponding entrance manually-operated gate (20 ~ 27) is provided between mouth manually-operated gate (5) and the bearing lubrication water pipe of each water circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621486671.4U CN206346942U (en) | 2016-12-31 | 2016-12-31 | A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621486671.4U CN206346942U (en) | 2016-12-31 | 2016-12-31 | A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206346942U true CN206346942U (en) | 2017-07-21 |
Family
ID=59323969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621486671.4U Active CN206346942U (en) | 2016-12-31 | 2016-12-31 | A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206346942U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941036A (en) * | 2017-12-21 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of subsidiary engine cooling water system of high-order arrangement |
| CN110514048A (en) * | 2019-07-10 | 2019-11-29 | 华电电力科学研究院有限公司 | A kind of water circulating pump cooling water water saving art of once-through cooling water fired power generating unit |
| CN113373877A (en) * | 2021-06-30 | 2021-09-10 | 广东省水利电力勘测设计研究院有限公司 | Seawater pumped storage power station technical water supply system |
| CN113419416A (en) * | 2021-07-07 | 2021-09-21 | 中国石油天然气股份有限公司 | Redundant rotating equipment control system and method |
-
2016
- 2016-12-31 CN CN201621486671.4U patent/CN206346942U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941036A (en) * | 2017-12-21 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of subsidiary engine cooling water system of high-order arrangement |
| CN107941036B (en) * | 2017-12-21 | 2023-08-22 | 中国电力工程顾问集团西北电力设计院有限公司 | Auxiliary engine cooling water system arranged at high position |
| CN110514048A (en) * | 2019-07-10 | 2019-11-29 | 华电电力科学研究院有限公司 | A kind of water circulating pump cooling water water saving art of once-through cooling water fired power generating unit |
| CN110514048B (en) * | 2019-07-10 | 2020-12-08 | 华电电力科学研究院有限公司 | Cooling water saving process for circulating water pump of direct-current cooling water-heating power unit |
| CN113373877A (en) * | 2021-06-30 | 2021-09-10 | 广东省水利电力勘测设计研究院有限公司 | Seawater pumped storage power station technical water supply system |
| CN113419416A (en) * | 2021-07-07 | 2021-09-21 | 中国石油天然气股份有限公司 | Redundant rotating equipment control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206346942U (en) | A kind of ultra-clean seawater lubricating system of Coastal Power Station water circulating pump bearing | |
| CN106758476A (en) | The closed cycle system and processing method of a kind of pulping and paper-making plain boiled water | |
| CN102007290B (en) | Method and device for reduction of wear in a water turbine | |
| CN110056437B (en) | Starting method of diesel generator | |
| CN201386617Y (en) | Hot-rolling or CSP cooling water overflow discharge power generation system | |
| CN105879485A (en) | Double-effect refrigerating and ultra-precision filtering equipment | |
| CN213868035U (en) | Main shaft seal water supply system of underground plant water power station | |
| CN206487515U (en) | The Multilayer filtering type oil circulating system for preventing turbine shafting from wearing and tearing | |
| CN206570613U (en) | A kind of closed cycle system of pulping and paper-making plain boiled water | |
| CN201983694U (en) | Jet-flow type condenser rubber ball cleaning system | |
| CN205805990U (en) | A kind of equipment of recycling machine sealing liquid | |
| CN106824882A (en) | The cleaning equipment and cleaning method of extra-supercritical unit high pressure extraction heat regenerative system | |
| WO2013157989A1 (en) | System of leakage drains for a main circulating pump assembly | |
| CN205672664U (en) | A kind of dual-effect refrigeration and extra accuracy filter plant | |
| CN204275614U (en) | A kind of secondary filter device for modifying | |
| CN207814896U (en) | Lubricating-oil Station for high oil field water injection pump shaft watt lubrication | |
| CN217005508U (en) | Indirect air cooling circulating water washing system | |
| CN202250267U (en) | Lubricating oil tank provided with water drainage device | |
| CN113969890A (en) | Method for monitoring operation and fault diagnosis of drainage pump based on liquid level meter | |
| CN115518406B (en) | Flue gas water lifting system debugging method and device | |
| CN207153249U (en) | A kind of road drainage filter | |
| CN104225997A (en) | Tool membrane filter | |
| CN210331906U (en) | Novel spindle mechanism of outer-in inner-out drum-shaped filter screen | |
| CN219735715U (en) | Auxiliary machine cooling water device during unit shutdown | |
| CN106371394A (en) | Remote monitoring and processing method for working condition of drainage pump station equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |