CN207991303U - A kind of plate evaporating condensator applied to Direct Air-cooled Unit - Google Patents
A kind of plate evaporating condensator applied to Direct Air-cooled Unit Download PDFInfo
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- CN207991303U CN207991303U CN201820269669.4U CN201820269669U CN207991303U CN 207991303 U CN207991303 U CN 207991303U CN 201820269669 U CN201820269669 U CN 201820269669U CN 207991303 U CN207991303 U CN 207991303U
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- steam
- cylinder
- direct air
- air
- cooled unit
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Abstract
The utility model discloses a kind of plate evaporating condensators applied to Direct Air-cooled Unit, including corresponding pipeline, valve etc..After Direct Air-cooled Unit implements zero output heat supply of low pressure (LP) cylinder transformation, steam flow into air cooling tubes condenser is substantially reduced, to prevent air-cooled heat-exchanging tube bundle from freezing, for that can close Air-Cooling Island steam-distributing pipe inlet valve when hot season zero output heat supply running of Direct Air-cooled Unit low pressure (LP) cylinder, unit steam discharge is back to host therrmodynamic system after entering plate evaporating condensator condensation.The plate evaporating condensator can be used as the spike cooling system of Direct Air-cooled Unit summer high temperature high load capacity section, play reduction operation back pressure achieve the purpose that it is energy-saving.
Description
Technical field
The utility model belongs to thermal power plant's flexibility and energy-saving field, is related to a kind of applied to Direct Air-cooled Unit
Plate evaporating condensator.
Background technology
Currently, " three Norths " Area Inhabitants winter heating demand is mostly undertaken by cogeneration units, a portion is direct
Air cooling unit.In thermal power plant unit thermoelectricity decoupling technology, zero output heat supply process improvement cost of low pressure (LP) cylinder is minimum, method of operation spirit
Living, heat-economy is best, and comprehensive advantage is maximum.
Zero output heat supply process of low pressure (LP) cylinder is broken original turbine low pressure cylinder minimum cooling flow limit value theory, is being supplied
Low pressure (LP) cylinder is cut off during heat into vapour, is only kept a small amount of cooling steam (300MW grade units about 10t/h or so), is made low pressure (LP) cylinder
" zero contributes " operation in high vacuum conditions, to improve the heat capacity and peak modulation capacity of steam turbine.
" three Norths " district heating season residing for Direct Air-Cooled cogeneration units is high and cold and the duration is long, Direct Air-Cooled machine
Group low pressure (LP) cylinder zero is contributed after transformation, and the steam flow (thermic load) into air cooling tubes condenser is substantially reduced, and air cooling tubes condenser body
Product is huge, and heat-exchanging tube bundle freezeout easily occurs under the conditions of low temperature low heat loads, brings and seriously affects the safe and reliable of unit
Operation.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of applied to Direct Air-cooled Unit
Plate evaporating condensator.
In order to achieve the above objectives, the utility model is achieved using following technical scheme：
A kind of plate evaporating condensator applied to Direct Air-cooled Unit, including high intermediate pressure cylinder, low pressure (LP) cylinder, generator, sky
Cold condenser and heat exchangers for district heating；High intermediate pressure cylinder is connected with low pressure (LP) cylinder by hydraulic butterfly valve, and low pressure (LP) cylinder drives generator rotation
Power generation；The steam discharge of low pressure (LP) cylinder is connected by steam exhaust device with air cooling tubes condenser；The steam discharge of high intermediate pressure cylinder draw all the way with heat supply network
Heater is connected；Steam discharge to plate evaporating condensator, the road steam discharge all the way is drawn on steam exhaust device to be condensed by surrounding air, is generated
Condensed water boosted pump pressurization after be back to steam exhaust device.
The utility model, which further improves, to be：
The both ends of hydraulic butterfly valve are also parallel with steam by-pass, and electric control valve is provided in steam by-pass and plays throttling action
Restricting orifice.
The steam discharge extraction of high intermediate pressure cylinder is connected with the hot side import of heat exchangers for district heating all the way, for heating hot net water；Heat supply network
The hot side outlet of heater connects heat supply network drainage pump, and host therrmodynamic system is back to after the pressurization of heat supply network drainage pump after steam condensation.
Steam exhaust device includes blow-off line, and one end of blow-off line is connected with the exhaust steam end of low pressure (LP) cylinder, the other end and sky
The entrance of cold condenser is connected；Electric butterfly valve is provided in blow-off line.
The pipeline upper edge working medium of connection steam exhaust device and plate evaporating condensator flow direction is disposed with expansion joint, hand-operated valve
And motor-driven valve.
Plate evaporating condensator includes heat exchanger group, axial flow blower, circulating cooling pond and water pump；The heat of heat exchanger group
Side entrance is connected with the outlet of the fairlead of steam exhaust device, and hot side outlet is connected with the entrance of booster；Water pump will recycle cold
But the cooling water in pond is pumped into heat exchanger group, for cooling down the steam discharge distributed in steam exhaust device.
Compared with prior art, the utility model has the advantages that：
A set of plate evaporating condensator is arranged in the utility model, contributes in winter for hot season Direct Air-cooled Unit low pressure (LP) cylinder zero
During operation, air cooling tubes condenser steam-distributing pipe inlet valve is closed, unit steam discharge returns after entering plate evaporating condensator condensation
It is flow to host therrmodynamic system, reaches and effectively prevent air cooling tubes condenser heat-exchanging tube bundle frozen problem.Summer high temperature period, plate evaporation
Condenser can be used as spike cooler, shunt part turbine discharge, reach the mesh for reducing unit exhaust steam pressure and units consumption
's.Effect is apparent, significant effect.
Description of the drawings
Fig. 1 is the total system schematic diagram of the utility model.
Wherein：1- high intermediate pressure cylinders；2- low pressure (LP) cylinders；3- generators；4- hydraulic butterfly valves；5- electric control valves；6- throttle orifices
Plate；7- steam exhaust devices；8- air cooling tubes condensers；9- electric butterfly valves；10- expansion joints；11- hand-operated valves；12- motor-driven valves；13- is board-like
Evaporative condenser；14- boosters；15- heat exchangers for district heatings；16- heat supply network drainage pumps；17- heat exchangers；18- axial flow blowers；19- is followed
Ring cooling pond；20- water pumps.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, the utility model is applied to the plate evaporating condensator of Direct Air-cooled Unit, including high intermediate pressure cylinder 1, low
Cylinder pressure 2, generator 3, air cooling tubes condenser 8 and heat exchangers for district heating 15；High intermediate pressure cylinder 1 passes through 4 phase of hydraulic butterfly valve with low pressure (LP) cylinder 2
Even, low pressure (LP) cylinder 2 drives the rotation power generation of generator 3；The steam discharge of low pressure (LP) cylinder 2 is connected by steam exhaust device 7 with air cooling tubes condenser 8；
The steam discharge extraction of high intermediate pressure cylinder 1 is connected with heat exchangers for district heating 15 all the way；It is cold to plate evaporation that steam discharge all the way is drawn on steam exhaust device 7
Condenser 13, the road steam discharge are condensed by surrounding air, and steam exhaust device 7 is back to after boosted 14 pressurization of pump of condensed water of generation.Liquid
The both ends of dynamic butterfly valve 4 are also parallel with steam by-pass, and electric control valve 5 is provided in steam by-pass and plays the throttle orifice of throttling action
Plate 6.The steam discharge extraction of high intermediate pressure cylinder 1 is connected with the hot side import of heat exchangers for district heating 15 all the way, for heating hot net water；Heat supply network
The hot side outlet of heater 15 connects heat supply network drainage pump 16, and host heat is back to after the pressurization of heat supply network drainage pump 16 after steam condensation
Force system.Steam exhaust device 7 includes blow-off line, and one end of blow-off line is connected with the exhaust steam end of low pressure (LP) cylinder 2, the other end and
The entrance of air cooling tubes condenser 8 is connected；Electric butterfly valve 9 is provided in blow-off line.Steam exhaust device 7 is connected to condense with plate evaporation
The pipeline upper edge working medium flow direction of device 13 is disposed with expansion joint 10, hand-operated valve 11 and motor-driven valve 12.Plate evaporating condensator 13
Including heat exchanger group 17, axial flow blower 18, circulating cooling pond 19 and water pump 20；The hot side entrance of heat exchanger group is filled with steam discharge
Set 7 fairlead outlet be connected, hot side outlet is connected with the entrance of booster 14；Water pump will be cold in circulating cooling pond
But water is pumped into heat exchanger group, for cooling down the steam discharge distributed in steam exhaust device 7.
The principles of the present invention：
One and plate evaporating condensator system is arranged in the utility model on the blow-off line of turbine discharge to Air-Cooling Island
The pipeline that system steam exhaust entrance is connected is contributed during running for hot season Direct Air-cooled Unit low pressure (LP) cylinder zero, is closed air-cooled in winter
Condenser steam-distributing pipe inlet valve condenses Steam Turbine steam exhaust introducing plate evaporating condensator group, and condensed water returns
It flow to host therrmodynamic system.
The course of work of the utility model：
During zero output heat supply running of low pressure (LP) cylinder, the vapor liquid that is arranged on the communicating pipe between high intermediate pressure cylinder 1 and low pressure (LP) cylinder 2
Dynamic butterfly valve 4 is closed, and a small amount of cooling steam enters low pressure (LP) cylinder 2 through steam by-pass, and the electric control valve 5 in steam by-pass is opened at this time
It opens, restricting orifice 6 plays certain throttling action.Heating steam enters heat exchangers for district heating 15 and heats hot net water, after steam condensation
Heat supply network drainage pump 16 pressurize after be back to host therrmodynamic system.The electric butterfly valve 9 on the steam-distributing pipe top of air cooling tubes condenser 8 closes
It closes, the hand-operated valve 11 and motor-driven valve 12 of the steam inlet duct of plate evaporating condensator 13 are opened, and unit steam discharge fully enters plate
Formula evaporative condenser 13 is condensed by surrounding air, and the steam exhaust device 7 of host is back to after boosted 14 pressurization of pump of condensed water.
Non- for the high-temperature high-load period in hot season, the plate evaporating condensator of setting can be used as the spike cooling of air cooling system
Device shunts part turbine discharge, achievees the purpose that reduce unit exhaust steam pressure and units consumption.High intermediate pressure cylinder 1 and low pressure (LP) cylinder 2
Between communicating pipe on the steam hydraulic butterfly valve 4 that is arranged open, the electric control valve 5 in steam by-pass is closed, steam butterfly valve 9,
Hand-operated valve 11 and motor-driven valve 12 are opened simultaneously, and turbine discharge enters air cooling tubes condenser 8 and plate evaporating condensator 13 simultaneously, carries
The high cooling capacity of unit cold end system, unit exhaust steam pressure decline.
Put into operation effect
It contributes in winter for hot season Direct Air-cooled Unit low pressure (LP) cylinder zero during running, closes air cooling tubes condenser steam-distributing pipe
Inlet valve, unit steam discharge enter plate evaporating condensator condensation after is back to host therrmodynamic system, reach effectively prevent it is air-cooled
Heat exchange tube of condenser beam frozen problem.
Summer high temperature period, plate evaporating condensator can be used as spike cooler, shunt part turbine discharge, reach drop
The purpose of low unit exhaust steam pressure and units consumption.
The above content is only to illustrate the technological thought of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical solution each falls within this reality
Within protection domain with novel claims.
Claims (6)
1. a kind of plate evaporating condensator applied to Direct Air-cooled Unit, which is characterized in that including high intermediate pressure cylinder (1), low pressure
Cylinder (2), generator (3), air cooling tubes condenser (8) and heat exchangers for district heating (15)；High intermediate pressure cylinder (1) passes through liquid with low pressure (LP) cylinder (2)
Dynamic butterfly valve (4) is connected, and low pressure (LP) cylinder (2) drives generator (3) to rotate power generation；The steam discharge of low pressure (LP) cylinder (2) by steam exhaust device (7) with
Air cooling tubes condenser (8) is connected；The steam discharge extraction of high intermediate pressure cylinder (1) is connected with heat exchangers for district heating (15) all the way；Steam exhaust device (7)
Upper extraction is condensed steam discharge to plate evaporating condensator (13), the road steam discharge all the way by surrounding air, and the condensed water of generation is boosted
It is back to steam exhaust device (7) after pump (14) pressurization.
2. the plate evaporating condensator according to claim 1 applied to Direct Air-cooled Unit, which is characterized in that butterfly of surging
The both ends of valve (4) are also parallel with steam by-pass, and electric control valve (5) is provided in steam by-pass and plays the throttle orifice of throttling action
Plate (6).
3. the plate evaporating condensator according to claim 1 applied to Direct Air-cooled Unit, which is characterized in that high pressure
The steam discharge extraction of cylinder (1) is connected with the hot side import of heat exchangers for district heating (15) all the way, for heating hot net water；Heat exchangers for district heating
(15) hot side outlet connects heat supply network drainage pump (16), and host heating power is back to after heat supply network drainage pump (16) pressurization after steam condensation
System.
4. the plate evaporating condensator according to claim 1 applied to Direct Air-cooled Unit, which is characterized in that steam discharge fills
It includes blow-off line to set (7), and one end of blow-off line is connected with the exhaust steam end of low pressure (LP) cylinder (2), the other end and air cooling tubes condenser
(8) entrance is connected；Electric butterfly valve (9) is provided in blow-off line.
5. the plate evaporating condensator according to claim 1 applied to Direct Air-cooled Unit, which is characterized in that connection row
Vapour device (7) and the pipeline upper edge working medium flow direction of plate evaporating condensator (13) are disposed with expansion joint (10), hand-operated valve
(11) and motor-driven valve (12).
6. being applied to the plate evaporating condensator of Direct Air-cooled Unit according to claim 1 or 5, which is characterized in that plate
Formula evaporative condenser (13) includes heat exchanger group (17), axial flow blower (18), circulating cooling pond (19) and water pump (20)；It changes
The hot side entrance of hot device group is connected with the outlet of the fairlead of steam exhaust device (7), the entrance phase of hot side outlet and booster (14)
Connection；Cooling water in circulating cooling pond is pumped into heat exchanger group by water pump, is distributed in steam exhaust device (7) for cooling down
Steam discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820269669.4U CN207991303U (en) | 2018-02-24 | 2018-02-24 | A kind of plate evaporating condensator applied to Direct Air-cooled Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820269669.4U CN207991303U (en) | 2018-02-24 | 2018-02-24 | A kind of plate evaporating condensator applied to Direct Air-cooled Unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207991303U true CN207991303U (en) | 2018-10-19 |
Family
ID=63824763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820269669.4U Expired - Fee Related CN207991303U (en) | 2018-02-24 | 2018-02-24 | A kind of plate evaporating condensator applied to Direct Air-cooled Unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207991303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259527A (en) * | 2019-07-24 | 2019-09-20 | 哈尔滨汽轮机厂有限责任公司 | A kind of power output of super-pressure 200MW low pressure (LP) cylinder zero flexibility transformation steam turbine |
-
2018
- 2018-02-24 CN CN201820269669.4U patent/CN207991303U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259527A (en) * | 2019-07-24 | 2019-09-20 | 哈尔滨汽轮机厂有限责任公司 | A kind of power output of super-pressure 200MW low pressure (LP) cylinder zero flexibility transformation steam turbine |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20190224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |