CN206055597U - Self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system - Google Patents
Self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system Download PDFInfo
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- CN206055597U CN206055597U CN201620886579.0U CN201620886579U CN206055597U CN 206055597 U CN206055597 U CN 206055597U CN 201620886579 U CN201620886579 U CN 201620886579U CN 206055597 U CN206055597 U CN 206055597U
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Abstract
This utility model is related to a kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system.Coal fired power generation 600MW level above unit generally adopts direct current cooker, unit parameter Jing often with load change, to bring difficulty to dewatering capacity-enlarging system fading margin.The characteristics of this utility model is：Including valve body pedestal, valve rod pedestal, slide block pedestal and positioning pedestal, valve body pedestal runs through in the horizontal direction circular hole steam flow channel, steam flow channel two ends are connected with flash steam inlet tube, flash steam outlet respectively, valve rod pedestal encloses jointly structure with valve body pedestal upper surface and goes out valve element mobile space, sealed valve stem two ends are connected with sealed valve core and master slider respectively, master slider and auxiliary slider are disposed with slide block pedestal, both diameters and slide block pedestal minor diameter fit, pedestal closure upper end is connected with positioning pedestal.This utility model had both fully reclaimed dilation process steam and hydrophobic energy, capacity-enlarging system parameter can be adjusted according to burden requirement at any time again.
Description
Technical field
This utility model is related to a kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system, belongs to electric power
Production field.
Background technology
Thermal generation unit develops to high parameter, Large Copacity direction, and 600MW level above unit generally adopts direct current cooker.
Direct current cooker typically sends into atmospheric drainage flash tank in the body high pressure draining for starting with produce in running at present, its expansion
Hold the steam for producing and enter surrounding air, the water after dilatation is pumped into condenser by hydrophobic.The draining system major defect has three
It is individual：（1）About 100 DEG C of saturated vapor is directly discharged into environment, improves water consume and the thermal energy consumption of power plant；（2）It is hydrophobic directly to send
Enter condenser, drain temperature and condenser hotwell water temperature mismatch, both affected the vacuum safety in operation of condenser, and increased again
Thermodynamic cycle radiation loss, affects economy of power plant；（3）Flash vessel and atmosphere, easily dislike the water quality of condensate system
Change.
In order to improve the patents such as energy utilization rate, application number 201520023629.8 to the flash steam before entering environment
Heat is recycled.The patents such as application number 201510134323.4 by improving flash vessel pressure, by flash steam and
It is hydrophobic to be ultimately delivered to oxygen-eliminating device, steam working medium is reclaimed, and has improve draining system energy utilization efficiency.But station boiler by
In peak regulation demand, Jing is needed often to carry out varying duty or start stop operation, in the process, the thermal parameter such as the pressure of unit, temperature
Also change at any time, for the dewatering capacity-enlarging system of flash pressure superatmospheric, certain difficulty is brought to its parameter regulation.
Utility model content
For the problems referred to above, the utility model proposes a kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device and dredge
Water system, can fully reclaim dilation process steam and hydrophobic energy, requirement that again can at any time according to load and therrmodynamic system,
The corresponding parameter for changing capacity-enlarging system, improves energy utilization efficiency.
The technical scheme in the invention for solving the above technical problem is：The self-adaptation type direct current cooker dewatering capacity-enlarging control
The construction featuress of device processed are：
（1）Dewatering capacity-enlarging control device is used for the pressure and temperature for adjusting hydrophobic development unit, and it increases direction along height（Sit
Parameter Z-direction）Axisymmetricly arrange, successively including valve body pedestal, valve rod pedestal, slide block pedestal and positioning pedestal, in them
Heart axis and sealing surface of seat, sealed valve core, sealed valve stem, master slider, auxiliary slider, pressure regulation connecting rod, pedestal closure, pressure regulation
Top board, the central axis of positioning pedestal overlap.Wherein valve rod pedestal and slide block pedestal are axial symmetry hollow structure.
（2）Valve body pedestal is in the horizontal direction through there is circular hole steam flow channel, axially disposed to have round platform hollow
Sealing surface of seat, completely through to valve body pedestal upper surface.Sealing surface of seat lower surface（The less round table surface of area）Highly
Between steam flow channel inner surface and valve body pedestal lower surface, when coordinating sealed valve core and sealing surface of seat, can be complete
Full blocking steam flow channel.Steam flow channel two ends are connected with flash steam inlet tube, flash steam outlet respectively,
Steam non-return valve is disposed with flash steam outlet, prevents steam from flowing backwards.
（3）Valve rod pedestal encloses jointly structure with valve body pedestal upper surface and goes out valve element mobile space, is disposed with truncated cone-shaped close in which
Envelope valve element, size are engaged with sealing surface of seat.Valve rod pedestal upper surface is provided with the hole being engaged with sealed valve stem diameter, close
Envelope valve rod two ends are connected with sealed valve core and master slider respectively.
（4）Master slider and auxiliary slider are disposed with slide block pedestal, both diameters are engaged with slide block pedestal internal diameter.It is main
Spring is arranged between slide block and auxiliary slider.Pedestal sealing is covered with the hole being engaged with pressure regulation connecting rod diameter, pressure regulation connecting rod
Two ends are connected with auxiliary slider and pressure regulation top board respectively.Postive stop baffle is provided with slide block pedestal, for master slider being limited to moving down
Dynamic extreme position, when preventing sealed valve core from coordinating with sealing surface of seat, excessively collision is impaired.Under postive stop baffle height
On slide block base side wall, circular hole pressure regulation steam channel is provided with, it is connected with flash steam inlet tube.Slide block pedestal, pedestal are close
Capping and valve rod pedestal upper surface are enclosed the space that structure goes out and are divided into two parts by master slider, and bottom is divided into the pressure regulation vapor space, top
It is divided into slide block mobile space.
（5）Pedestal closure upper end is connected with positioning pedestal, and running through in positioning pedestal has concentric cylindrical hollow-core construction
Top board mobile space, pressure regulation top board can be axially moveable in top board mobile space.Positioning pedestal is on differing heights direction
Be provided with the square hollow locating slot of level parallel to each other, for placement positioning slide block, positioning sliding block be used to limiting pressure regulation top board and
The axial location of auxiliary slider.
The specific work process of the dewatering capacity-enlarging control device in this utility model is as follows：
Steam in flash steam inlet tube enters the pressure regulation vapor space from pressure regulation steam channel, in vapour pressure masterpiece
With under, master slider is promoted to move axially upward, spring is compressed.Master slider drives sealed valve core together by sealed valve stem
Move axially upward.The steam flow channel for being disconnected by sealed valve core before, as the upper shifting of sealed valve core is connect again
Logical, steam smoothly can enter flash steam outlet by steam flow channel from flash steam inlet tube.Steam
Non-return valve prevents extraneous steam from flowing backwards into flash steam inlet tube.
By positioning sliding block being adjusted in the position of each locating slot, can adjust the height of pressure regulation top board, and pass through pressure regulation
The axial location of lever regulated auxiliary slider, so as to pre-set the thrust to spring.When vapour pressure in the pressure regulation vapor space
When power is more than pressing force of the spring to the motive force of master slider, move on sealed valve core, spring is further compressed, until master slider is received
Dynamic balance, steam flow channel are gradually turned on.When steam pressure is less than pressing force of the spring to the motive force of master slider, steam
Flow channel is still disconnected by sealed valve core, and the steam in flash steam inlet tube cannot be introduced into flash steam outlet.Therefore,
The position of positioning sliding block can be preset according to the steam pressure of flash steam inlet tube, can just control steam flow channel
Whether connect.
The characteristics of self-adaptation type direct current cooker draining system described in the utility model is：
（1）The system includes hydrophobic development unit, relief valve, dewatering capacity-enlarging control device, drain tank, drainage pump, drainage pump
The capital equipment such as start stop switch and logic controller.
（2）Hydrophobic development unit steam (vapor) outlet end is connected with dewatering capacity-enlarging control device by flash steam inlet tube, is being expanded
Hold steam inlet tube and be provided with relief valve gland steam exhauster and atmosphere, relief valve gland steam exhauster is provided with relief valve.Dewatering capacity-enlarging control
The device other end processed is connected by the 6th section of extraction steam pipe of flash steam outlet and steam turbine, is provided with flash steam outlet
Steam non-return valve, prevents the steam in the 6th section of extraction steam pipe from flowing back to hydrophobic development unit.
（3）Hydrophobic development unit is connected with drain tank by hydrophobic gravity line, hydrophobic overflow pipe respectively, hydrophobic development unit absolute altitude
More than drain tank absolute altitude, the hydrophobic overflow interface tube absolute altitude on hydrophobic development unit is more than hydrophobic gravity flow interface tube absolute altitude.It is hydrophobic to overflow
The effect of flow tube is to prevent hydrophobic development unit from full water accident occurring.Drain tank is hydrophobic with #5 low-pressure heaters by hydrophobic fairlead
Pipe connects, and hydrophobic fairlead is provided with drainage pump and hydrophobic non-return valve.The signal of drain tank height of water level is sent into by holding wire
Logic controller, logic controller control drainage pump start stop switch according to drain tank height of water level signal, so as to control drainage pump
Whether run.Its control logic is：If drain tank water level is less than lowest water level, hydrophobic pump shutdown；If drain tank water level is higher than
Peak level, then hydrophobic pump startup；If drain tank water level is between lowest water level and peak level, drainage pump keeps original fortune
Row state.
The specific workflow of the direct current cooker draining system in this utility model is as follows：
The steam discharge Jing turbine discharge pipes of steam turbine enter condenser, are condensed into as condensate, then in condensate pump
Gland heater, #8 low-pressure heater, #7 low-pressure heater, #6 low-pressure heater, #5 low-pressure heater are flowed through under effect successively
Heated, the condensate after heating enters oxygen-eliminating device.The thermal source of #5 low-pressure heaters is from the 5th section of steam turbine
The steam of extraction steam pipe, be condensed into after steam heat release it is hydrophobic, pressure differential effect under flowed through #5 low-pressure heater drain pipes automatically
Enter #6 low-pressure heaters.
The like, #6 low-pressure heaters, #7 low-pressure heaters, the thermal source of #8 low-pressure heaters are respectively from the 6th section
Extraction steam pipe, the 7th section of extraction steam pipe, the steam of the 8th section of extraction steam pipe.It is under pressure differential effect, hydrophobic through #6 after steam heat release
Low-pressure heater drain pipe, #7 low-pressure heater drain pipes, #8 low-pressure heater drain pipes, separately flow into #7 low-pressure heaters, #
8 low-pressure heaters, condenser.The thermal source of gland heater be gland packing leakage, the hydrophobic and #8 low-pressure heatings condensed after its heat release
Device is hydrophobic converge after flow into condenser together.
When boiler normally runs, after the hydrophobic entrance hydrophobic development unit blood pressure lowering cooling of boiler body, Jing after flash steam elder generation
Flash steam inlet tube, dewatering capacity-enlarging control device, flash steam outlet are crossed, with the steam in the 6th section of extraction steam pipe of steam turbine
Converge, condensate is heated into #6 low-pressure heaters jointly.Relief valve gland steam exhauster on flash steam inlet tube is used for
Hydrophobic development unit pressure release under emergency situation, prevents its superpressure from running.
In hydrophobic development unit, hydrophobic after blood pressure lowering enters drain tank through hydrophobic gravity line under gravity, then passes through
Hydrophobic fairlead into drainage pump boost, finally with #5 low-pressure heater drain pipes in it is hydrophobic converge, be co-flowed into #6 low pressure
Heater.The start and stop of drainage pump are controlled according to the height of water level signal of drain tank by logic controller and drainage pump start stop switch
System.What the hydrophobic non-return valve on hydrophobic fairlead was used to preventing in #5 low-pressure heater drain pipes hydrophobic blows back into drain tank.
At the boiler startup initial stage, due to the hydrophobic pressure of boiler body it is relatively low, the now steam in flash steam inlet tube
Move on the master slider that pressure cannot promote in dewatering capacity-enlarging control device, steam flow channel remains as disconnection situation, the operating mode
Under, the hydrophobic priority of boiler body after hydrophobic development unit, drain tank, drainage pump, with #5 low-pressure heater drain pipes in dredge
Water converges, and is co-flowed into #6 low-pressure heaters.The boiler startup process intermediary and later stages, with the gradually liter of the hydrophobic pressure of boiler body
Height, the steam pressure in flash steam inlet tube also by increase, until move on the sealed valve core in making dewatering capacity-enlarging control device,
Steam flow channel is connected.If the boiler body drain water quality of initial start stage is poor, the water quality of condensate in condenser is not reached
Require, then can stop hydrophobic pump operation, open the blowoff valve of hydrophobic lower box part, hydrophobic by water quality inferiority is discharged into accident tank.
This utility model compared with prior art, with advantages below and effect：（1）By changing in dewatering capacity-enlarging device
Positioning sliding block position, the operating pressure and operating temperature of hydrophobic development unit can be adjusted, realize dewatering capacity-enlarging systematic parameter with
The matching process of Unit Commitment and load variations.（2）The hydrophobic flash steam produced in hydrophobic development unit of boiler body and dredge
The energy of water is all reclaimed, and the heat regenerative system matching of drawing gas of its thermal parameter and steam turbine, in hydrophobic development unit
The hydrophobic system for all flowing into condenser is compared, and improves energy utilization efficiency and security of system.（3）In this draining system
Working medium finally fully enters condensate system, reduces discharge of steam loss.（4）Drainage pump intermitten service, reduces hydrophobic system
The power consumption of system.
Description of the drawings
Fig. 1 is the structural representation of self-adaptation type direct current cooker dewatering capacity-enlarging control device in this utility model embodiment.
Fig. 2 is the structural representation of positioning pedestal in this utility model embodiment.
Fig. 3 is the flow chart of self-adaptation type direct current cooker draining system in this utility model embodiment.
In figure：1- hydrophobic development units, 2- relief valve gland steam exhausters, 3- relief valve, 4- dewatering capacity-enlarging control devices, the 5th section of 5-
Extraction steam pipe, 6- steam turbines, the 6th section of extraction steam pipe of 7-, the 7th section of extraction steam pipe of 8-, the 8th section of extraction steam pipe of 9-, 10-#8 low-pressure heaters,
11- turbine discharge pipes, 12- condensers, 13- condensate pumps, 14- gland heaters, 15- gland heater drain pipes, 16-#8
Low-pressure heater drain pipe, 17-#7 low-pressure heater drain pipes, 18-#7 low-pressure heaters, 19-#6 low-pressure heater drain pipes,
20-#6 low-pressure heaters, 21-#5 low-pressure heater drain pipes, 22-#5 low-pressure heaters, the hydrophobic non-return valves of 23-, 24- drainage pumps
Start stop switch, 25- drainage pumps, the hydrophobic fairleads of 26-, 27- logic controllers, 28- blowoff valves, 29- holding wires, 30- are hydrophobic certainly
Flow tube, 31- drain tanks, the hydrophobic overflow pipes of 32-, 101- positioning pedestals, 102- pressure regulation top boards, 103- pedestal closures, 104- are auxiliary
Help slide block, 105- slide block mobile spaces, 106- master sliders, 107- postive stop baffles, 108- pressure regulation steam channels, 109- valve rod bases
Seat, 110- valve element mobile spaces, 111- flash steam inlet tubes, 112- steam flow channels, 113- valve body pedestals, 114- valve seats
Sealing surface, 115- flash steam outlets, 116- steam non-return valves, 117- positioning sliding blocks, 118- pressure regulation connecting rods, 119- slide block bases
Seat, 120- springs, the 121- pressure regulation vapor spaces, 122- sealed valve stems, 123- sealed valve cores, 124- top board mobile spaces, 125-
Locating slot, A- boiler bodies are hydrophobic, the condensate after B- heating, C- gland packing leakages, D- sewers.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are right
It is of the present utility model explanation and this utility model is not limited to following examples.
Embodiment 1.
Referring to Fig. 1 to Fig. 3, the dewatering capacity-enlarging control device 4 in the present embodiment increases direction along height（Coordinate axess Z-direction）
Axisymmetricly arrange, successively including valve body pedestal 113, valve rod pedestal 109, slide block pedestal 119 and positioning pedestal 101, they
Central axis is connected with sealing surface of seat 114, sealed valve core 123, sealed valve stem 122, master slider 106, auxiliary slider 104, pressure regulation
Bar 118, pedestal closure 103, pressure regulation top board 102, the central axis of positioning pedestal 101 overlap.Wherein valve rod pedestal 109
It is axial symmetry hollow structure with slide block pedestal 119.
Valve body pedestal 113 is in the horizontal direction through there is circular hole steam flow channel 112, axially disposed to have round platform hollow
The sealing surface of seat 114 of shape, completely through to 113 upper surface of valve body pedestal.114 lower surface of sealing surface of seat（Area is less
Round table surface）Height makes sealed valve core 123 and valve between 113 lower surface of 112 inner surface of steam flow channel and valve body pedestal
When seat sealing surface 114 coordinates, steam flow channel 112 can be blocked completely.112 two ends of steam flow channel respectively with flash steam
Inlet tube 111, flash steam outlet 115 are connected, and steam non-return valve 116 is disposed with flash steam outlet 115.
Valve rod pedestal 109 encloses jointly structure with 113 upper surface of valve body pedestal and goes out valve element mobile space 110, is disposed with circle in which
Platform shape sealed valve core 123, size is engaged with sealing surface of seat 114.109 upper surface of valve rod pedestal is provided with and sealed valve stem 122
The hole that diameter is engaged, 122 two ends of sealed valve stem are connected with sealed valve core 123 and master slider 106 respectively.
Master slider 106 and auxiliary slider 104 are disposed with slide block pedestal 119, both diameters and 119 internal diameter of slide block pedestal
It is engaged.Spring 120 is arranged between master slider 106 and auxiliary slider 104.Pedestal closure 103 is provided with straight with pressure regulation connecting rod 118
The hole that footpath is engaged, 118 two ends of pressure regulation connecting rod are connected with auxiliary slider 104 and pressure regulation top board 102 respectively.Slide block pedestal 119
Postive stop baffle 107 is inside provided with, for limiting the extreme position that master slider 106 is moved down, prevents sealed valve core 123 close with valve seat
When front cover 114 coordinates, excessively collision is impaired.On the 119 side wall of slide block pedestal under 107 height of postive stop baffle, circular hole is provided with
Pressure regulation steam channel 108, it is connected with flash steam inlet tube 111.Slide block pedestal 119, pedestal closure 103 and valve rod pedestal
It is two parts that space that structure goes out is enclosed by 106 points of master slider in 109 upper surfaces, and bottom is divided into the pressure regulation vapor space 121, and top is divided into cunning
Block mobile space 105.
103 upper end of pedestal closure is connected with positioning pedestal 101, and running through in positioning pedestal 101 has concentric cylindrical hollow
The top board mobile space 124 of structure, pressure regulation top board 102 can be axially moveable in top board mobile space 124.Positioning pedestal
101 are provided with the square hollow locating slot 125 of level parallel to each other on differing heights direction, for placement positioning slide block 117, fixed
Position slide block 117 is used for the axial location for limiting pressure regulation top board 102 and auxiliary slider 104.
Draining system include hydrophobic development unit 1, relief valve 3, dewatering capacity-enlarging control device 4, drain tank 31, drainage pump 25,
The capital equipment such as drainage pump start stop switch 24 and logic controller 27.
1 steam (vapor) outlet end of hydrophobic development unit is connected with dewatering capacity-enlarging control device 4 by flash steam inlet tube 111,
Flash steam inlet tube 111 is provided with relief valve gland steam exhauster 2 and atmosphere, and relief valve gland steam exhauster 2 is provided with relief valve 3, uses
1 pressure release of hydrophobic development unit under emergency situation, prevents its superpressure from running.4 other end of dewatering capacity-enlarging control device passes through dilatation
The 6th section of extraction steam pipe 7 of steam outlet pipe 115 and steam turbine is connected, and steam non-return valve is provided with flash steam outlet 115
116, prevent the steam in the 6th section of extraction steam pipe 7 from flowing back to hydrophobic development unit 1.
Hydrophobic development unit 1 is connected with drain tank 31 by hydrophobic gravity line 30, hydrophobic overflow pipe 32 respectively, hydrophobic development unit
1 absolute altitude is more than 31 absolute altitude of drain tank, and the 32 interface absolute altitude of hydrophobic overflow pipe on hydrophobic development unit 1 is more than 31 interface of hydrophobic gravity line
Absolute altitude.The effect of hydrophobic overflow pipe 32 is to prevent hydrophobic development unit 1 from full water accident occurring.Drain tank 31 passes through hydrophobic fairlead 26
It is connected with #5 low-pressure heaters drain pipe 21, hydrophobic fairlead 26 is provided with drainage pump 25 and hydrophobic non-return valve 23.Drain tank 31
The signal of height of water level sends into logic controller 27 by holding wire 29, and logic controller 27 is believed according to 31 height of water level of drain tank
Number control drainage pump start stop switch 24, so as to control whether drainage pump 25 runs.Its control logic is：If 31 water level of drain tank is low
In lowest water level, then drainage pump 25 is stopped transport；If 31 water level of drain tank is higher than peak level, drainage pump 25 starts；If drain tank
Between lowest water level and peak level, drainage pump 25 keeps original running status to 31 water levels.
The steam discharge Jing turbine discharges pipe 11 of steam turbine 6 enters condenser 12, is condensed into as condensate, is then condensing
Water pump 13 successively flows through gland heater 14, #8 low-pressure heaters 10, #7 low-pressure heaters 18, #6 low-pressure heaters under acting on
20th, #5 low-pressure heaters 22 are heated, and the condensate B after heating enters oxygen-eliminating device.The heat of #5 low-pressure heaters 22
Source is the steam from the 5th section of extraction steam pipe 5 of steam turbine, be condensed into after steam heat release it is hydrophobic, pressure differential effect under it is low through #5
Pressure heater condensate pipe 21 automatically flows into #6 low-pressure heaters 20.
The like, #6 low-pressure heaters 20, #7 low-pressure heaters 18, #8 low-pressure heaters 10 thermal source be respectively from
6th section of extraction steam pipe 7, the 7th section of extraction steam pipe 8, the steam of the 8th section of extraction steam pipe 9.Under pressure differential effect, dredging after steam heat release
Water is flowed respectively through #6 low-pressure heaters drain pipe 19, #7 low-pressure heaters drain pipe 17, #8 low-pressure heaters drain pipe 16
Enter #7 low-pressure heaters 18, #8 low-pressure heaters 10, condenser 12.The thermal source of gland heater 14 be gland packing leakage C, its heat release
The hydrophobic and #8 low-pressure heaters 10 for condensing afterwards it is hydrophobic converge after flow into condenser 12 together.
After the hydrophobic A of boiler body enters 1 blood pressure lowering of hydrophobic development unit cooling, 111 He of flash steam Jing flash steams inlet tube
Pressure regulation steam channel 108 on dewatering capacity-enlarging control device 4 enters the pressure regulation vapor space 121, under steam pressure effect, promotes
Master slider 106 is moved axially upward, and master slider 106 drives sealed valve core 123 together axially upward by sealed valve stem 122
Motion, spring 120 are gradually compressed, and the Steam Actuation power and spring-compressed elastic force being subject to up to master slider 106 is mutually balanced.
Now due to the upper shifting of sealed valve core 123, steam flow channel 112 is switched on, and flash steam is first from flash steam inlet tube 111
Afterwards through steam flow channel 112, flash steam outlet 115, converge with the steam in the 6th section of extraction steam pipe 7 of steam turbine, altogether
It is same condensate to be heated into #6 low-pressure heaters 20.
In hydrophobic development unit 1 after blood pressure lowering it is hydrophobic under gravity through hydrophobic gravity line 30 enter drain tank 31, so
Boost into drainage pump 25 through hydrophobic fairlead 26 afterwards, finally with #5 low-pressure heaters drain pipe 21 in it is hydrophobic converge, altogether
With inflow #6 low-pressure heaters 20.The start and stop of drainage pump 25 are by logic controller 27 and drainage pump start stop switch 24 according to drain tank
31 height of water level signal is controlled.Hydrophobic non-return valve 23 on hydrophobic fairlead 26 is used to prevent #5 low-pressure heaters hydrophobic
Hydrophobic in pipe 5 blows back into drain tank 31.
With the direct current of evaporation capacity 2100t/h, superheated steam pressure 25.4MPa, 570 DEG C of superheat steam temperature under declared working condition
As a example by boiler normal operating condition, the steam parameter of the 5th section of extraction steam pipe 5 of steam turbine be respectively 0.411MPa, 247 DEG C, the 6th section
The steam parameter of extraction steam pipe 7 be respectively 0.121MPa, 169 DEG C, the drain temperature in #5 low-pressure heaters drain pipe 21 be 110
DEG C, by 117 position of positioning sliding block for adjusting dewatering capacity-enlarging control device 4, make the hydrophobic A of boiler body enter hydrophobic development unit 1
Become pressure 0.15MPa, the flash steam of 111 DEG C of temperature and hydrophobic after blood pressure lowering cooling.From the hydrophobic fairleads of 31 Jing of drain tank 26
Into the hydrophobic of drainage pump 25, its pressure boosts to 0.42MPa from 0.15MPa.
Embodiment 2
Still by taking direct current cooker and draining system in embodiment 1 as an example.At the boiler startup initial stage, dilatation in hydrophobic development unit
Steam pressure is 0.1MPa, 100 DEG C of temperature, it is impossible to promotes the master slider 106 in dewatering capacity-enlarging control device 4 to move up, steams
Vapour flow channel 112 is disconnected by sealed valve core 123.Now the water quality of the hydrophobic A of boiler body does not reach the condensation in condenser 12
Water water quality requirement, drainage pump 25 are out of service, and blowoff valve 28 is opened, and the hydrophobic gravity lines 30 of the hydrophobic A Jing of boiler body enter hydrophobic
Case 31, Jing blow-off lines are discharged into accident tank.
After the water quality of the hydrophobic A of boiler body reaches the condensate water quality requirement in condenser 12, blowoff valve 28 is closed, dredged
Water level in water tank 31 is gradually increasing more than after peak level, and logic controller 27 opens drainage pump start stop switch 24, makes hydrophobic
Pump 25 brings into operation, and is sent to #6 low-pressure heaters 20 by hydrophobic.With gradually carrying out for start-up course, when in hydrophobic development unit 1
Flash steam pressure reach 0.15MPa, the steam flow channel 112 of dewatering capacity-enlarging control device 4 is connected, a whole set of draining system
Running status switches to embodiment 1.
Embodiment 3
By taking the draining system in embodiment 1 as an example, the evaporation capacity 3030t/h under direct current cooker declared working condition, superheated steam
605 DEG C of pressure 26.3MPa, superheat steam temperature.
The steam parameter of the 5th section of extraction steam pipe 5 of steam turbine be respectively 0.636MPa, 338 DEG C, the steam of the 6th section of extraction steam pipe 7
Parameter be respectively 0.329MPa, 262 DEG C, the drain temperature in #5 low-pressure heaters drain pipe 21 be 142 DEG C, by adjust it is hydrophobic
117 position of positioning sliding block of dilatation control device 4, makes the hydrophobic A of boiler body become pressure into after 1 blood pressure lowering of hydrophobic development unit cooling
Power 0.39MPa, the flash steam of 143 DEG C of temperature and hydrophobic.Dredging for drainage pump 25 is entered from the hydrophobic fairleads 26 of 31 Jing of drain tank
Water, its pressure boost to 0.65MPa from 0.39MPa.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Claiming etc. can be with difference, and above the content described in this specification is only to this utility model structure example explanation.
Equivalence changes or simple change that construction, feature and principle described in all foundation this utility model inventional ideas is done, wrap
Include in the protection domain of this utility model patent.This utility model person of ordinary skill in the field can be to described
Specific embodiment is made various modifications or supplements or substituted using similar mode, without departing from knot of the present utility model
Structure surmounts scope defined in the claims, all should belong to protection domain of the present utility model.
Claims (5)
1. a kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device, it is characterised in that：Including valve body pedestal, valve rod pedestal,
Slide block pedestal and positioning pedestal, in the horizontal direction through the steam flow channel for having circle hole shape, valve body pedestal is along axle for valve body pedestal
To the sealing surface of seat for being provided with round platform hollow, completely through valve body pedestal upper surface；The height of sealing surface of seat lower surface
Between steam flow channel inner surface and valve body pedestal lower surface；Steam flow channel two ends respectively with flash steam entrance
Pipe is connected with flash steam outlet, and steam non-return valve is disposed with flash steam outlet；
Valve rod pedestal encloses jointly structure with valve body pedestal upper surface and goes out valve element mobile space, is disposed with truncated cone-shaped in valve element mobile space
Sealed valve core, the sealed valve core is engaged with sealing surface of seat；Valve rod pedestal upper surface is provided with and is matched with sealed valve stem diameter
The hole of conjunction, the two ends of sealed valve stem are connected with sealed valve core and master slider respectively；
Be disposed with master slider and auxiliary slider in slide block pedestal, the diameter of the diameter and auxiliary slider of master slider with slide block pedestal
Minor diameter fit；Spring is disposed between master slider and auxiliary slider；Pedestal sealing is covered with the diameter matching with pressure regulation connecting rod
The hole of conjunction, the two ends of pressure regulation connecting rod are connected with auxiliary slider and pressure regulation top board respectively；Postive stop baffle is provided with slide block pedestal；
Slide block base side wall below the height of postive stop baffle is provided with the pressure regulation steam channel of circle hole shape, the pressure regulation steam channel and expansion
Hold steam inlet tube to be connected；Space that structure goes out is enclosed jointly by master slider in slide block pedestal, pedestal closure and valve rod pedestal upper surface
It is divided into upper and lower two parts, bottom is divided into the pressure regulation vapor space, and top is divided into slide block mobile space；
The upper end of pedestal closure is connected with positioning pedestal, is moved through the top board for having concentric cylindrical hollow-core construction in positioning pedestal
Dynamic space；Positioning pedestal is provided with the square hollow locating slot of level parallel to each other on differing heights direction, fixed for placing
Position slide block, positioning sliding block are used for the axial location for limiting pressure regulation top board and auxiliary slider.
2. self-adaptation type direct current cooker dewatering capacity-enlarging control device according to claim 1, it is characterised in that：Self-adaptation type
Direct current cooker dewatering capacity-enlarging control device increases direction along height and axisymmetricly arranges.
3. self-adaptation type direct current cooker dewatering capacity-enlarging control device according to claim 1, it is characterised in that：Valve body base
Seat, the central axis and sealing surface of seat of valve rod pedestal, slide block pedestal and positioning pedestal, sealed valve core, sealed valve stem, main cunning
Block, auxiliary slider, pressure regulation connecting rod, pedestal closure, pressure regulation top board, the central axis of positioning pedestal overlap.
4. self-adaptation type direct current cooker dewatering capacity-enlarging control device according to claim 1, it is characterised in that：Valve rod pedestal
It is axial symmetry hollow structure with slide block pedestal.
5. a kind of self-adaptation type direct current cooker draining system, including hydrophobic development unit, relief valve, drain tank, drainage pump, drainage pump
Start stop switch and logic controller, it is characterised in that：Also include the dewatering capacity-enlarging described in Claims 1 to 4 any claim
Control device, the steam (vapor) outlet end of hydrophobic development unit are connected with dewatering capacity-enlarging control device by flash steam inlet tube, are being expanded
Hold steam inlet tube and be provided with relief valve gland steam exhauster and atmosphere, relief valve gland steam exhauster is provided with relief valve；Dewatering capacity-enlarging control
The other end of device processed is connected by the 6th section of extraction steam pipe of flash steam outlet and steam turbine, is set on flash steam outlet
There is steam non-return valve；Pass through hydrophobic gravity line between hydrophobic development unit and drain tank and hydrophobic overflow pipe connects, hydrophobic development unit
Absolute altitude more than drain tank absolute altitude, the absolute altitude of the hydrophobic overflow interface tube on hydrophobic development unit is more than hydrophobic gravity flow interface tube
Absolute altitude；Drain tank is connected with #5 low-pressure heater drain pipes by hydrophobic fairlead, and hydrophobic fairlead is provided with drainage pump and dredges
Water non-return valve；The signal of drain tank height of water level sends into logic controller by holding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620886579.0U CN206055597U (en) | 2016-08-16 | 2016-08-16 | Self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620886579.0U CN206055597U (en) | 2016-08-16 | 2016-08-16 | Self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system |
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| Publication Number | Publication Date |
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| CN206055597U true CN206055597U (en) | 2017-03-29 |
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| CN201620886579.0U Withdrawn - After Issue CN206055597U (en) | 2016-08-16 | 2016-08-16 | Self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system |
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| CN (1) | CN206055597U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439776A (en) * | 2016-08-16 | 2017-02-22 | 华电电力科学研究院 | Self-adaptive concurrent boiler drainage expansion control device and drainage system |
-
2016
- 2016-08-16 CN CN201620886579.0U patent/CN206055597U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439776A (en) * | 2016-08-16 | 2017-02-22 | 华电电力科学研究院 | Self-adaptive concurrent boiler drainage expansion control device and drainage system |
| CN106439776B (en) * | 2016-08-16 | 2018-12-25 | 华电电力科学研究院 | A kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20181225 |