CN109855082A - A kind of efficient low-pressure heater draining system and its application method - Google Patents
A kind of efficient low-pressure heater draining system and its application method Download PDFInfo
- Publication number
- CN109855082A CN109855082A CN201910108172.3A CN201910108172A CN109855082A CN 109855082 A CN109855082 A CN 109855082A CN 201910108172 A CN201910108172 A CN 201910108172A CN 109855082 A CN109855082 A CN 109855082A
- Authority
- CN
- China
- Prior art keywords
- low
- pressure
- pressure heaters
- valve
- normal
- 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.)
- Pending
Links
Landscapes
- Pipeline Systems (AREA)
Abstract
The present invention relates to a kind of efficient low-pressure heater draining system and its application methods, including low pressure (LP) cylinder, No. seven low-pressure heaters, No. eight low-pressure heaters, condenser, No. five low-pressure heaters, No. six low-pressure heaters, No.1 condensate pump and No. two condensate pumps etc.；The hydrophobic of each low-pressure heater is flow automatically step by step by pressure difference realization, excavates the potentiality of the hydrophobic energy of each low-pressure heater, sufficiently progress heat exchange；On main condensate pipeline before the normal hydrophobic emergent drain with emergent drain and No. five low-pressure heaters, No. six low-pressure heaters and No. seven low-pressure heaters of No. eight low-pressure heaters to be connected to No.1 condensate pump and No. two condensate pump entrance motor-driven valves, by the swabbing action of condensate pump, the control of each heater water level is realized；Simultaneously after the hydrophobic entrance main condensate pipeline of each low-pressure heater, sufficient heat exchange is carried out with the condensed water of condenser, the condensing water temperature of condensate pump entrance is improved, improves the thermal efficiency of entire heat regenerative system.
Description
Technical field
The present invention relates to a kind of efficient low-pressure heater draining system and its application methods, belong to the backheat of steam turbine
System.
Background technique
The draining system of existing low-pressure heater, such as application No. is the Chinese patent of 201810768183.X, pressure compared with
High low-pressure heater it is normal it is hydrophobic flow to the lower low-pressure heater of pressure by pressure difference by way of flowing automatically step by step, directly
To afterbody low-pressure heater, it is normal it is hydrophobic enter condenser, after the heater condensate of big flow enters condenser, cause into
The heat for entering condenser increases；Meanwhile when low-pressure heater operation, if normal draining system exception occurs or water level can not
Normal control, can only be urgent hydrophobic by emergency drain system progress, and the hydrophobic parameter of each low-pressure heater is higher at this time, will more
More hydrophobic heats bring condenser into；Recirculated water carries out heat exchange cooling to condenser, by the exhaust steam heat of low pressure (LP) cylinder and heating power system
The hydrophobic heat of system is taken away, and increases the cold source energy of steam turbine, while condenser vacuum also will appear corresponding reduction, influences
The economy of unit.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and it is reasonable efficient to provide a kind of design
The low-pressure heater draining system and its application method of rate.
Technical solution used by the present invention solves the above problems is: a kind of efficient low-pressure heater draining system,
It is characterised in that it includes low pressure (LP) cylinder, No. seven low-pressure heaters, No. eight low-pressure heaters, condenser, No. five low-pressure heaters, six
Number low-pressure heater, No.1 condensate pump and No. two condensate pumps；The low pressure (LP) cylinder is connect with condenser, and No. seven low-pressure heatings
Device and No. eight low-pressure heaters are fixed on the throat of condenser；No. five low-pressure heaters are connect with No. six low-pressure heaters,
And No. five normal hydrophobic preceding section is equipped on the normal drain water piping between No. five low-pressure heaters and No. six low-pressure heaters
The only normal hydrophobic rear shut-off valve of valve, No. five normal hydrophobic pneumatic control valves and No. five；No. five low-pressure heaters are additionally coupled to
On main condensate pipeline before No.1 condensate pump and No. two condensate pumps, and in No. five low-pressure heaters and No.1 condensed water
Shut-off valve, No. five emergent drain gas before No. five emergent drains are installed on emergent drain pipeline between pump and No. two condensate pumps
Shut-off valve after dynamic regulating valve and No. five emergent drains；No. six low-pressure heaters are connect with No. seven low-pressure heaters, and six
No. six normal hydrophobic preceding shut-off valves, six are installed on normal drain water piping number between low-pressure heater and No. seven low-pressure heaters
Number normal hydrophobic pneumatic control valve and No. six it is normal it is hydrophobic after shut-off valves；No. six low-pressure heaters are additionally coupled to No.1 condensation
On main condensate pipeline before water pump and No. two condensate pumps, and in No. six low-pressure heaters and No.1 condensate pump and No. two
Shut-off valve, No. six emergent drain pneumatic control valves before No. six emergent drains are installed on the emergent drain pipeline between condensate pump
With shut-off valve after No. six emergent drains；No. seven low-pressure heaters are connect with No. eight low-pressure heaters, and are added in No. seven low pressure
Be equipped on normal drain water piping between hot device and No. eight low-pressure heaters No. seven normal hydrophobic preceding shut-off valves, No. seven normal dredge
Water pneumatic control valve and No. seven normal hydrophobic rear shut-off valves；No. seven low-pressure heaters are additionally coupled to No.1 condensate pump and two
On main condensate pipeline before number condensate pump, and in No. seven low-pressure heaters and No.1 condensate pump and No. two condensate pumps
Between emergent drain pipeline on shut-off valve before No. seven emergent drains, No. seven emergent drain pneumatic control valves and No. seven danger are installed
Anxious hydrophobic rear shut-off valve；No. eight low-pressure heaters are connected to the main condensation before No.1 condensate pump and No. two condensate pumps
Pacify on normal drain water piping on waterpipe, and between No. eight low-pressure heaters and No.1 condensate pump and No. two condensate pumps
Equipped with the normal hydrophobic rear shut-off valve of No. eight normal hydrophobic preceding shut-off valves, No. eight normal hydrophobic pneumatic control valves and No. eight, at No. eight
No. eight emergent drains are installed on the emergent drain pipeline between low-pressure heater and No.1 condensate pump and No. two condensate pumps
Shut-off valve after preceding shut-off valve, No. eight emergent drain pneumatic control valves and No. eight emergent drains；The No.1 condensate pump and No. two
Condensate pump is connected to the hot well of condenser, and is equipped with No.1 on the pipeline between No.1 condensate pump and condenser and enters
Mouthful strainer and No.1 entrance motor-driven valve, be equipped on No. two pipelines between condensate pump and condenser No. two inlet screens and
It is electronic to be separately installed with No.1 outlet in the outlet of No.1 condensate pump and the outlet of No. two condensate pumps for No. two entrance motor-driven valves
Valve and No. two outlet electric valves.
Furthermore, the low pressure (LP) cylinder is welded to connect with condenser by expansion joint.
Furthermore, No. seven low-pressure heaters and No. eight low-pressure heaters are cylindrical structure, and with it is solidifying
Vapour device is through fixation.
Furthermore, No. five low-pressure heaters and No. six low-pressure heaters are cylindrical structure.
Furthermore, No. seven low-pressure heaters, No. eight low-pressure heaters, No. five low-pressure heaters, No. six low pressure
Heater is provided with hydrophobic cooling section, for fully absorbing the hydrophobic heat of low-pressure heater, improves the temperature of main condensate,
Improve the efficiency of heat regenerative system.
The application method of the efficient low-pressure heater draining system is as follows:
No. five low-pressure heaters, No. six low-pressure heaters, No. seven low-pressure heaters and No. eight low-pressure heaters water level respectively by
No. five normal hydrophobic pneumatic control valves, No. six normal hydrophobic pneumatic control valves, No. seven normal hydrophobic pneumatic control valves and No. eight are just
Chang Shushui pneumatic control valve is controlled, when the valve on the normal drain water piping of low-pressure heater exception occurs or water level can not
When normal control, then respectively by No. five emergent drain pneumatic control valves, No. six emergent drain pneumatic control valves, No. seven it is critical dredge
Control is adjusted in water pneumatic control valve and No. eight emergent drain pneumatic control valves, it is ensured that the water level of each low-pressure heater is kept just
Often.
The hydrophobic side of No. five low-pressure heaters, No. six low-pressure heaters, No. seven low-pressure heaters and No. eight low-pressure heaters
Formula includes normal hydrophobic and emergent drain.Normal hydrophobic and emergent drain mode is provided with pneumatic control valve, pneumatic adjusting
Shut-off valve after shut-off valve and pneumatic control valve before valve.Each low-pressure heating is controlled by normal hydrophobic and emergent drain pneumatic control valve
The water level of device；On-bne repair and the replacement of pneumatic control valve are realized by the forward and backward shut-off valve of pneumatic control valve.
Low pressure (LP) cylinder is located on the first firing floor, after the steam discharge of intermediate pressure cylinder enters low pressure (LP) cylinder, carries out expansion work, steam exhaust row
Enter condenser to be condensed；Condenser is attached by expansion joint and low pressure (LP) cylinder lower end, is discharged by recirculated water to low pressure (LP) cylinder
The steam exhaust of condenser is cooled down, and guarantees the vacuum of condenser；Steam exhaust collects in hot well after condenser is condensed into water, so
It is laggard to become owner of condensing water conduit, the entrance motor-driven valve and inlet screen of No.1 condensate pump and No. two condensate pumps are flowed through, into
Enter No.1 condensate pump and No. two condensate pumps, flows through No.1 condensate pump after pressurized and the outlet of No. two condensate pumps is electronic
Valve is heated into gland heater and each low-pressure heater.
No. five low-pressure heaters are arranged in oxygen-eliminating device floor, and heater base is provided with hydrophobic cooling section, and pumping enters No. five
Low-pressure heater heats main condensate, sufficiently becomes condensed water after heat exchange and is collected to heater base shell, No. five low-pressure heatings
Device bottom shell is respectively welded normal hydrophobic and emergent drain pipeline.Condensed water is flow to by normal drain water piping by pressure difference
The water level of No. six low-pressure heaters, No. five low-pressure heaters is controlled by normal hydrophobic pneumatic control valve, pneumatic control valve
Aperture is interlocked with water level, when on normal drain water piping any valve break down or water level can not normal control when,
No. five the hydrophobic of low-pressure heater are discharged by emergent drain pipeline, and water level is controlled by No. five emergent drain pneumatic control valves
System, control valve opening are interlocked with water level, realize the dynamic adjustment of water level；
No. six low-pressure heaters are arranged on the second firing floor, and heater base is provided with hydrophobic cooling section, and pumping enters No. six
Low-pressure heater heats main condensate, sufficiently becomes condensed water after heat exchange and is collected to heater base shell, No. six low-pressure heatings
Device bottom shell is respectively welded normal hydrophobic and emergent drain pipeline.Condensed water is flow to by normal drain water piping by pressure difference
The water level of No. seven low-pressure heaters, No. six low-pressure heaters is controlled by normal hydrophobic pneumatic control valve, pneumatic control valve
Aperture is interlocked with water level, when on normal drain water piping any valve break down or water level can not normal control when,
No. six the hydrophobic of low-pressure heater are discharged by emergent drain pipeline, and water level is controlled by No. six emergent drain pneumatic control valves
System, control valve opening are interlocked with water level, realize the dynamic adjustment of water level；
Pumping enters No. seven low-pressure heaters and heats main condensate, sufficiently becomes condensed water after heat exchange and is collected to heater base shell
Body, No. seven low-pressure heater bottom shells are respectively welded normal hydrophobic and emergent drain pipeline.Condensed water passes through normal hydrophobic
Pipeline flow to No. eight low-pressure heaters by pressure difference, and the water level of No. seven low-pressure heaters is carried out by normal hydrophobic pneumatic control valve
Control, pneumatic control valve aperture interlocked with water level, when on normal drain water piping the failure of any valve or water level
Can not normal control when, No. seven the hydrophobic of low-pressure heater are discharged by emergent drain pipeline, and water level is by No. seven emergent drain gas
Dynamic regulating valve is controlled, and control valve opening is interlocked with water level, realizes the dynamic adjustment of water level；
Pumping enters No. eight low-pressure heaters and heats main condensate, sufficiently becomes condensed water after heat exchange and is collected to heater base shell
Body, No. eight low-pressure heater bottom shells are respectively welded normal hydrophobic and emergent drain pipeline.The water of No. eight low-pressure heaters
Position is controlled by normal hydrophobic pneumatic control valve, and pneumatic control valve aperture is interlocked with water level, when normal drain water piping
On any valve break down or water level can not normal control when, No. eight the hydrophobic of low-pressure heater pass through emergent drain pipe
Road discharge, water level are controlled by No. eight emergent drain pneumatic control valves, and control valve opening is interlocked with water level, realize water level
Dynamic adjustment；
The prior art is compared, and is had the following advantages that and effect: this system is simple and reasonable, No. five low-pressure heaters, No. six it is low
Pressure heater, No. seven low-pressure heaters and No. eight the hydrophobic of low-pressure heater are flow automatically step by step by pressure difference realization, excavate each low pressure
The potentiality of the hydrophobic energy of heater, sufficiently progress heat exchange；By the normal hydrophobic and emergent drain of No. eight low-pressure heaters with
And the emergent drain of No. five low-pressure heaters, No. six low-pressure heaters and No. seven low-pressure heaters is connected to No.1 condensate pump
On the main condensate pipeline before the entrance motor-driven valve of No. two condensate pumps, by the swabbing action of condensate pump, realizes and respectively add
The control of hot device water level；Simultaneously after the hydrophobic entrance main condensate pipeline of each low-pressure heater, carried out with the condensed water of condenser
Sufficient heat exchange improves the condensing water temperature of condensate pump entrance, improves the thermal efficiency of entire heat regenerative system；Each low pressure
The emergent drain of heater and the normal hydrophobic heat for being no longer connected to condenser, reducing into condenser, maintain condenser true
Quantity of circulating water required for sky reduces, and reduces the capacity of entire circulation and cooling tower, reduces capital expenditure and station-service
Electricity achievees the effect that energy-saving and emission-reduction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mesolow drainage system of heater of the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, efficient low-pressure heater draining system in the present embodiment, including 1, No. seven low pressure of low pressure (LP) cylinder add
2, No. eight low-pressure heaters 3 of hot device, the low-pressure heater 5, six of condenser 4, five low-pressure heater 6, five it is normal it is hydrophobic before
Shut-off valve 7, five normal hydrophobic pneumatic control valves 8, five it is normal it is hydrophobic after shut-off valve 10 before 9, No. six emergent drains of shut-off valve,
Shut-off valve 13, five danger before 12, No. five emergent drains of shut-off valve after 11, No. six emergent drains of No. six emergent drain pneumatic control valves
Shut-off valve 15, six normal hydrophobic preceding shut-off valves 16, six are normally hydrophobic after anxious hydrophobic 14, No. five emergent drains of pneumatic control valve
19, No. seven emergent drains of shut-off valve are pneumatically adjusted before pneumatic control valve 17, No. six normal hydrophobic rear shut-off valve, 18, No. seven emergent drains
22, No. eight emergent drain pneumatic control valves of shut-off valve before 21, No. eight emergent drains of shut-off valve after section 20, No. seven emergent drains of valve
23, shut-off valve 24, eight normal hydrophobic preceding shut-off valve 25, eight normal hydrophobic pneumatic control valves 26, eight after No. eight emergent drains
It is number normal it is hydrophobic after normal hydrophobic preceding shut-off valve 28, the seven normal hydrophobic pneumatic control valves 29, seven of shut-off valve 27, seven normally
33, No. two shut-off valve 30,31, No. two entrance motor-driven valves 32 of No.1 entrance motor-driven valve, No.1 inlet screen inlet screens after hydrophobic
34,35, No. two condensate pumps 36 of No.1 condensate pump, No.1 outlet electric valve 37 and No. two outlet electric valves 38.
Low pressure (LP) cylinder 1 in the present embodiment is welded to connect with condenser 4 by expansion joint.
No. seven low-pressure heaters 2 in the present embodiment and No. eight low-pressure heaters 3 are cylindrical structure, through being welded and fixed
In 4 throat of condenser.
No. five low-pressure heaters 5 in the present embodiment are cylindrical structure, and hydrophobic cooling section, shell bottom is arranged in housing bottom
The normal drain water piping of the outside weldings in portion, successively with No. five normal hydrophobic preceding shut-off valve 7, five normal hydrophobic pneumatic control valves 8
It is welded to connect with No. five normal hydrophobic rear shut-off valves 9, is then attached to the middle part of No. six 6 shells of low-pressure heater.
The outside weldings emergent drain pipeline of the bottom of No. five 5 shells of low-pressure heater in the present embodiment, successively with five
Shut-off valve 15 is welded after 13, No. five emergent drain pneumatic control valves 14 of shut-off valve and No. five emergent drains before number emergent drain
It connects, on the main condensate pipeline before being then attached to the entrance motor-driven valve of No.1 condensate pump 35 and No. two condensate pumps 36.
No. six low-pressure heaters 6 in the present embodiment are cylindrical structure, and hydrophobic cooling section, shell bottom is arranged in housing bottom
The normal drain water piping of the outside weldings in portion, successively with No. six normal normal hydrophobic pneumatic control valves of hydrophobic preceding shut-off valve 16, six
17 and No. six it is normal it is hydrophobic after shut-off valves 18 be welded to connect, be then attached to the middle part of No. seven 2 shells of low-pressure heater.
The outside weldings emergent drain pipeline of the bottom of No. six 6 shells of low-pressure heater in the present embodiment, successively with six
Shut-off valve 12 is welded after 10, No. six emergent drain pneumatic control valves 11 of shut-off valve and No. six emergent drains before number emergent drain
It connects, on the main condensate pipeline before being then attached to the entrance motor-driven valve of No.1 condensate pump 35 and No. two condensate pumps 36.
Hydrophobic cooling section, the outside weldings of housing bottom are arranged in No. seven 2 housing bottoms of low-pressure heater in the present embodiment
Normal drain water piping is successively normal with No. seven normal hydrophobic preceding shut-off valve 28, seven normal hydrophobic pneumatic control valves 29 and No. seven
Shut-off valve 30 is welded to connect after hydrophobic, is then attached to the middle part of No. eight 3 shells of low-pressure heater.
The critical pipeline of outside weldings of the bottom of No. seven 2 shells of low-pressure heater in the present embodiment is successively endangered with No. seven
Shut-off valve 21 carries out welding company after anxious hydrophobic 19, No. seven emergent drain pneumatic control valves 20 of preceding shut-off valve and No. seven emergent drains
It connects, on the main condensate pipeline before being then attached to the entrance motor-driven valve of No.1 condensate pump 35 and No. two condensate pumps 36.
Hydrophobic cooling section, the outside weldings of housing bottom are arranged in No. eight 3 housing bottoms of low-pressure heater in the present embodiment
Normal drain water piping is successively normal with No. eight normal hydrophobic preceding shut-off valve 25, eight normal hydrophobic pneumatic control valves 26 and No. eight
Shut-off valve 27 is welded to connect after hydrophobic, and the entrance for being then attached to No.1 condensate pump 35 and No. two condensate pumps 36 is electronic
On main condensate pipeline before valve.
The outside weldings emergent drain pipeline of the bottom of No. eight 3 shells of low-pressure heater in the present embodiment, successively with eight
Shut-off valve 24 is welded after 22, No. eight emergent drain pneumatic control valves 23 of shut-off valve and No. eight emergent drains before number emergent drain
It connects, on the main condensate pipeline before being then attached to the entrance motor-driven valve of No.1 condensate pump 35 and No. two condensate pumps 36.
No.1 condensate pump 35 in the present embodiment passes through pipeline and No.1 entrance motor-driven valve 31 and No.1 inlet screen 33
It is welded to connect, is then attached to the hot well of condenser 4, be then welded to connect again with No.1 outlet electric valve 37.
No. two condensate pumps 36 in the present embodiment pass through pipeline and No. two entrance motor-driven valves 32 and No. two inlet screens 34
It is welded to connect, is then attached to the hot well of condenser 4, be then welded to connect again with No. two outlet electric valves 38.One
The outlet conduit of number condensate pump 35 and No. two condensate pumps 36 is collected to a main pipe.
Low-pressure heater draining system assembled in situ method and application method in the present embodiment, include the following steps:
Step 1: low pressure (LP) cylinder 1, condenser 4,35, No. two condensate pumps 36 of No.1 condensate pump and No. five low-pressure heaters 5,
No. six low-pressure heaters 6 are transported to scene and are fixed with basis；No. seven low-pressure heaters 2 and No. eight low-pressure heaters 3 are laterally
It is mounted on 4 throat of condenser, and is welded and fixed；
Low pressure (LP) cylinder 1 and condenser 4 are welded and fixed second step by expansion joint；
Third step, the outside of No. five 5 housing bottoms of low-pressure heater and normal drain water piping and No. five normal hydrophobic preceding cut-offs
Valve 7, five normal hydrophobic pneumatic control valves 8, five it is normal it is hydrophobic after shut-off valves 9 be welded to connect, be then welded to connect to
The middle part of No. six 6 shells of low-pressure heater；
4th step is ended before the outside of No. five 5 housing bottoms of low-pressure heater and emergent drain pipeline and No. five emergent drains
Shut-off valve 15 is welded to connect after the emergent drain of emergent drain pneumatic control valve 14, five of valve 13, five, is then welded to connect
To the condensing water conduit between 31, No. two entrance motor-driven valves 32 of condenser 4 and No.1 entrance motor-driven valve；
5th step, the outside of No. six 6 housing bottoms of low-pressure heater and normal drain water piping and No. six normal hydrophobic preceding cut-offs
Valve 16, six normal hydrophobic pneumatic control valve 17, six normal hydrophobic rear shut-off valves 18 are welded to connect, and are then welded to connect
To the middle part of No. seven 2 shells of low-pressure heater；
6th step is ended before the outside of No. six 6 housing bottoms of low-pressure heater and emergent drain pipeline and No. six emergent drains
Shut-off valve 12 is welded to connect after the emergent drain of emergent drain pneumatic control valve 11, six of valve 10, six, is then welded to connect
To the condensing water conduit between 31, No. two entrance motor-driven valves 32 of condenser 4 and No.1 entrance motor-driven valve；
7th step, the outside of No. seven 2 housing bottoms of low-pressure heater and normal drain water piping and No. seven normal hydrophobic preceding cut-offs
Valve 28, seven normal hydrophobic pneumatic control valve 29, seven normal hydrophobic rear shut-off valves 30 are welded to connect, and are then welded to connect
To the middle part of No. eight 3 shells of low-pressure heater；
8th step is ended before the outside of No. seven 2 housing bottoms of low-pressure heater and emergent drain pipeline and No. seven emergent drains
Shut-off valve 21 is welded to connect after the emergent drain of emergent drain pneumatic control valve 20, seven of valve 19, seven, is then welded to connect
To the condensing water conduit between 31, No. two entrance motor-driven valves 32 of condenser 4 and No.1 entrance motor-driven valve；
9th step, the outside of No. eight 3 housing bottoms of low-pressure heater and normal drain water piping and No. eight normal hydrophobic preceding cut-offs
Valve 25, eight normal hydrophobic pneumatic control valve 26, eight normal hydrophobic rear shut-off valves 27 are welded to connect, and are then welded to connect
To the condensing water conduit between 31, No. two entrance motor-driven valves 32 of condenser 4 and No.1 entrance motor-driven valve；
Tenth step is ended before the outside of No. eight 3 housing bottoms of low-pressure heater and emergent drain pipeline and No. eight emergent drains
Shut-off valve 24 is welded to connect after the emergent drain of emergent drain pneumatic control valve 23, eight of valve 22, eight, is then welded to connect
To the condensing water conduit between 31, No. two entrance motor-driven valves 32 of condenser 4 and No.1 entrance motor-driven valve；
11st step, No.1 condensate pump 35 and No.1 entrance motor-driven valve 31, No.1 outlet electric valve 37 and No.1 entrance are filtered
Net 33, pipeline are welded to connect；
12nd step, No. two condensate pumps 36 and 32, No. two outlet electric valves 38 of No. two entrance motor-driven valves and No. two entrance filters
Net 34, pipeline are welded to connect, and are then welded again with the pipeline after No.1 outlet electric valve 37, and a main pipe is become；
13rd step, No. five low-pressure heaters 2 of low-pressure heater 6, seven of low-pressure heater 5, six and No. eight low-pressure heaters 3
Water level it is normal hydrophobic pneumatic by the normal hydrophobic pneumatic control valve of No. five normal hydrophobic pneumatic control valves 8, six 17, seven respectively
Regulating valve 29 and No. eight normal hydrophobic pneumatic control valves 26 are controlled, when the valve on the normal drain water piping of low-pressure heater goes out
Now exception or water level can not normal control when, then pass through 14, No. six emergent drains of No. five emergent drain pneumatic control valves respectively
Control is adjusted in 11, No. seven emergent drain pneumatic control valves 20 of pneumatic control valve and No. eight emergent drain pneumatic control valves 23,
Ensure that the water level of each low-pressure heater keeps normal.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (7)
1. a kind of efficient low-pressure heater draining system, which is characterized in that including low pressure (LP) cylinder (1), No. seven low-pressure heaters
(2), No. eight low-pressure heaters (3), condenser (4), No. five low-pressure heaters (5), No. six low-pressure heaters (6), No.1 condensation
Water pump (35) and No. two condensate pumps (36)；The low pressure (LP) cylinder (1) connect with condenser (4), and No. seven low-pressure heaters (2) and
No. eight low-pressure heaters (3) are fixed on the throat of condenser (4)；No. five low-pressure heaters (5) and No. six low-pressure heaters
(6) it connects, and is equipped with five on the normal drain water piping between No. five low-pressure heaters (5) and No. six low-pressure heaters (6)
The normal hydrophobic shut-off valves (9) afterwards of number normal hydrophobic preceding shut-off valve (7), No. five normal hydrophobic pneumatic control valves (8) and No. five；It is described
No. five low-pressure heaters (5) are additionally coupled to the main condensate pipeline before No.1 condensate pump (35) and No. two condensate pumps (36)
On, and the emergent drain pipe between No. five low-pressure heaters (5) and No.1 condensate pump (35) and No. two condensate pumps (36)
It is equipped on road before No. five emergent drains after shut-off valve (13), No. five emergent drain pneumatic control valves (14) and No. five emergent drains
Shut-off valve (15)；No. six low-pressure heaters (6) connect with No. seven low-pressure heaters (2), and in No. six low-pressure heaters (6)
Be equipped on normal drain water piping between No. seven low-pressure heaters (2) No. six normal hydrophobic preceding shut-off valves (16), No. six just
Chang Shushui pneumatic control valve (17) and No. six normal hydrophobic rear shut-off valves (18)；No. six low-pressure heaters (6) are additionally coupled to
On main condensate pipeline before No.1 condensate pump (35) and No. two condensate pumps (36), and in No. six low-pressure heaters (6)
Before No. six emergent drains are installed on emergent drain pipeline between No.1 condensate pump (35) and No. two condensate pumps (36)
Shut-off valve (12) after shut-off valve (10), No. six emergent drain pneumatic control valves (11) and No. six emergent drains；No. seven low pressure
Heater (2) is connect with No. eight low-pressure heaters (3), and between No. seven low-pressure heaters (2) and No. eight low-pressure heaters (3)
Normal drain water piping on No. seven normal hydrophobic preceding shut-off valves (28), No. seven normal hydrophobic pneumatic control valves (29) and seven are installed
It is number normal it is hydrophobic after shut-off valve (30)；No. seven low-pressure heaters (2) are additionally coupled to No.1 condensate pump (35) and No. two solidifying
It bears water on the main condensate pipeline before pump (36), and in No. seven low-pressure heaters (2) and No.1 condensate pump (35) and No. two
Shut-off valve (19), No. seven emergent drain gas before No. seven emergent drains are installed on the emergent drain pipeline between condensate pump (36)
Shut-off valve (21) behind dynamic regulating valve (20) and No. seven emergent drains；No. eight low-pressure heaters (3) are connected to No.1 condensed water
On main condensate pipeline before pump (35) and No. two condensate pumps (36), and condensed in No. eight low-pressure heaters (3) and No.1
Be equipped on normal drain water piping between water pump (35) and No. two condensate pumps (36) No. eight normal hydrophobic preceding shut-off valves (25),
No. eight normal hydrophobic pneumatic control valves (26) and No. eight normal hydrophobic rear shut-off valves (27), in No. eight low-pressure heaters (3) and one
End before No. eight emergent drains are installed on emergent drain pipeline number between condensate pump (35) and No. two condensate pumps (36)
Shut-off valve (24) after valve (22), No. eight emergent drain pneumatic control valves (23) and No. eight emergent drains；The No.1 condensate pump
(35) and No. two condensate pumps (36) are connected to the hot wells of condenser (4), and in No.1 condensate pump (35) and condenser (4)
Between pipeline on No.1 inlet screen (33) and No.1 entrance motor-driven valve (31) are installed, in No. two condensate pumps (36) and solidifying
No. two inlet screens (34) and No. two entrance motor-driven valves (32) are installed, in No.1 condensate pump on the pipeline between vapour device (4)
(35) outlet of outlet and No. two condensate pumps (36) is separately installed with No.1 outlet electric valve (37) and No. two outlets are electronic
Valve (38).
2. efficient low-pressure heater draining system according to claim 1, which is characterized in that the low pressure (LP) cylinder (1)
It is welded to connect with condenser (4) by expansion joint.
3. efficient low-pressure heater draining system according to claim 1, which is characterized in that No. seven low pressure adds
Hot device (2) and No. eight low-pressure heaters (3) are cylindrical structure, and with condenser (4) through fixation.
4. efficient low-pressure heater draining system according to claim 1, which is characterized in that No. five low pressure adds
Hot device (5) and No. six low-pressure heaters (6) are cylindrical structure.
5. efficient low-pressure heater draining system according to claim 1, which is characterized in that No. seven low pressure adds
Hot device (2), No. eight low-pressure heaters (3), No. five low-pressure heaters (5), No. six low-pressure heaters (6) are provided with hydrophobic cooling
Section, for fully absorbing the hydrophobic heat of low-pressure heater, improves the temperature of main condensate, improves the efficiency of heat regenerative system.
6. a kind of application method of efficient low-pressure heater draining system according to any one of claims 1 to 5,
It is characterized in that, the application method is as follows: No. five low-pressure heaters (5), No. six low-pressure heaters (6), No. seven low-pressure heaters
(2) and the water level of No. eight low-pressure heaters (3) respectively by No. five normal hydrophobic pneumatic control valves (8), No. six it is normal hydrophobic pneumatic
Regulating valve (17), No. seven normal hydrophobic pneumatic control valves (29) and No. eight normal hydrophobic pneumatic control valves (26) are controlled, when
Valve on the normal drain water piping of low-pressure heater occur exception or water level can not normal control when, then pass through No. five danger respectively
Anxious hydrophobic pneumatic control valve (14), No. six emergent drain pneumatic control valves (11), No. seven emergent drain pneumatic control valves (20) and
Control is adjusted in No. eight emergent drain pneumatic control valves (23), it is ensured that the water level of each low-pressure heater keeps normal.
7. the application method of efficient low-pressure heater draining system according to claim 6, which is characterized in that No. five
Low-pressure heater (5), No. six low-pressure heaters (6), No. seven low-pressure heaters (2) and No. eight low-pressure heaters (3) hydrophobic side
Formula includes normal hydrophobic and emergent drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108172.3A CN109855082A (en) | 2019-02-02 | 2019-02-02 | A kind of efficient low-pressure heater draining system and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108172.3A CN109855082A (en) | 2019-02-02 | 2019-02-02 | A kind of efficient low-pressure heater draining system and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109855082A true CN109855082A (en) | 2019-06-07 |
Family
ID=66897609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910108172.3A Pending CN109855082A (en) | 2019-02-02 | 2019-02-02 | A kind of efficient low-pressure heater draining system and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109855082A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719391A (en) * | 2009-11-30 | 2010-06-02 | 中国广东核电集团有限公司 | Extraction device and condensate extraction system |
| CN203731374U (en) * | 2013-12-31 | 2014-07-23 | 华电电力科学研究院 | Drain structure of low-pressure heater regenerative system of power station |
| CN203783654U (en) * | 2013-11-13 | 2014-08-20 | 大唐洛阳首阳山发电有限责任公司 | Turbine low-pressure heater drainage system |
| CN205714703U (en) * | 2016-05-31 | 2016-11-23 | 冶金自动化研究设计院 | A kind of redundant measurement liquid-level type drainage pump full-automatic control system |
| CN108644756A (en) * | 2018-07-13 | 2018-10-12 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of low-pressure heater draining system |
| CN207989089U (en) * | 2018-01-24 | 2018-10-19 | 北京易泽动力科技有限公司 | A kind of efficient heating system of cogeneration units recycling heat release based on condensed water |
| CN210088823U (en) * | 2019-02-02 | 2020-02-18 | 华电电力科学研究院有限公司 | Efficient low pressure feed water heater drainage system |
-
2019
- 2019-02-02 CN CN201910108172.3A patent/CN109855082A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719391A (en) * | 2009-11-30 | 2010-06-02 | 中国广东核电集团有限公司 | Extraction device and condensate extraction system |
| CN203783654U (en) * | 2013-11-13 | 2014-08-20 | 大唐洛阳首阳山发电有限责任公司 | Turbine low-pressure heater drainage system |
| CN203731374U (en) * | 2013-12-31 | 2014-07-23 | 华电电力科学研究院 | Drain structure of low-pressure heater regenerative system of power station |
| CN205714703U (en) * | 2016-05-31 | 2016-11-23 | 冶金自动化研究设计院 | A kind of redundant measurement liquid-level type drainage pump full-automatic control system |
| CN207989089U (en) * | 2018-01-24 | 2018-10-19 | 北京易泽动力科技有限公司 | A kind of efficient heating system of cogeneration units recycling heat release based on condensed water |
| CN108644756A (en) * | 2018-07-13 | 2018-10-12 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of low-pressure heater draining system |
| CN210088823U (en) * | 2019-02-02 | 2020-02-18 | 华电电力科学研究院有限公司 | Efficient low pressure feed water heater drainage system |
Non-Patent Citations (2)
| Title |
|---|
| 凌峰;牛忠华;: "解决7号低压加热器疏水不畅的技术方案", 电站辅机, vol. 30, no. 03, pages 9 - 11 * |
| 李兴敏: "低压加热器危急疏水频繁动作的治理", 《华电技术》, vol. 33, no. 3, pages 52 - 54 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101389361B1 (en) | High efficiency hybrid cooling/heating and hot water supply system with absorption type | |
| CN107905897A (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system and method | |
| CN103884037A (en) | Circulating water heat exchange system of heating network | |
| CN113404563B (en) | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system | |
| CN103697524A (en) | Double-backpressure circulating water heating system | |
| CN100582605C (en) | Native sewage water heat pump air conditioning system | |
| CN205536060U (en) | Low temperature waste heat utilization system of thermal power plant | |
| CN109855082A (en) | A kind of efficient low-pressure heater draining system and its application method | |
| CN210088823U (en) | Efficient low pressure feed water heater drainage system | |
| CN201803524U (en) | Medium and high temperature heat pump device for recovering waste heat from sewage of oilfield | |
| CN218511542U (en) | Cooling water waste heat recovery energy-saving device of thermal power plant | |
| CN204962942U (en) | Carbon dioxide heat pump heating device | |
| CN208920038U (en) | A kind of thermal power plant's combined type Two-way Cycle fume afterheat effective utilization system | |
| CN207245755U (en) | A kind of equipment Multi-stage heating heating system | |
| CN103471192B (en) | Multiple Air Conditioning System with Heat and operation method thereof | |
| CN107524483B (en) | A kind of exhaust steam in steam turbine deriving structure and method | |
| CN213627791U (en) | Air inlet heating system for combined cycle power plant | |
| CN212671882U (en) | Condensate system of exhaust steam recovery heat supply supercritical unit | |
| CN105258399B (en) | Middle water reclamation system with energy regenerating structure | |
| CN209196897U (en) | A kind of water-borne steam air heater winterization system in smoke waste heat utilization system | |
| CN209801455U (en) | Low-pressure drainage optimization structure of 600MW unit | |
| CN209876889U (en) | Waste heat boiler drum continuous sewage discharge waste heat utilization system | |
| CN112815298A (en) | Condensate water recovery system | |
| CN2586827Y (en) | Terminal cooler for air compressor | |
| CN108195071A (en) | A kind of antifreeze air heater of big temperature difference low-temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |