CN208456679U - A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation - Google Patents
A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation Download PDFInfo
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- CN208456679U CN208456679U CN201821123906.2U CN201821123906U CN208456679U CN 208456679 U CN208456679 U CN 208456679U CN 201821123906 U CN201821123906 U CN 201821123906U CN 208456679 U CN208456679 U CN 208456679U
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Abstract
The utility model discloses a kind of devices for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, to solve the problems, such as thermoelectricity air cooling unit safe production in summer, use lithium bromide/water for the absorption generating device of working medium, cooperate high-low pressure NaOH solution tank NaOH and water tank, the energy storage thought of peak regulation round the clock is introduced and thoroughly solves the problems, such as air cooling unit safe production in summer, simultaneously by peak load cutting, guarantee Peak power use on daytime load.
Description
Technical field
The utility model belongs to the air-cooled field of coal-fired thermal power generation unit, and in particular to one kind takes into account the air-cooled condensing of thermoelectricity
The device of device safe production in summer and power peak regulation is protected to solve the problems, such as air cooling unit safe production in summer, while by peak load cutting
Demonstrate,prove Peak power use on daytime load.
Background technique
Up to now, accounting is still the basic guarantee of China's power supply in 73% or more coal-fired thermal power generation.Phase
Compared with the apparent water saving advantage of wet type cooling unit, cause air cooling system to be increasingly becoming the first choice that China's richness coal lacks water area.Thermoelectricity is super
Extensive air-cooled thermic load discharge is highly prone to the influence of meteorological condition, wherein most typical feature is due to ambient air temperature
Raising, the decaying of condenser heat exchange property, very big the exhaust pressure for having raised steam turbine deteriorates generating set efficiency.Research
Show: environment temperature increases 1 DEG C, and steam-turbine unit vacuum degree declines about 2kPa, and generated energy declines about 4MW；In addition to this, environment
Air high temperature is possible to the safe operation of threat system.When environment temperature is excessively high, and turbine discharge back pressure is caused to increase, boiler
Must coal to maintain main vapour pressure, but when back pressure of condenser fluctuates and declines, due to subtracting the hysteresis quality of coal adjusting, can cause to lead
Steam pressure is excessively high, in turn results in boiler and steam turbine trip.Therefore developing one kind is able to suppress air cooling unit performance with environment temperature
The device of variation is very necessary.
Summer day high temperature will lead to generating set efficiency deep fades, lower power production.But summer day high temperature simultaneously
When but exactly when peak of power consumption.This will cause great pressure to contradiction to thermoelectricity system, therefore developing can be round the clock
Between the large-scale energy storage system of peak regulation can must increase the installed capacity built to avoid because of peak of power consumption.
For air cooling unit safe production in summer problem, currently used solution is that load down operation or dry and wet are combined and changed
Make measure.(1) load down is run, although can guarantee the safety of unit, this is carried on the back with the big status of high-temperature condition electricity consumption
Road and speed；(2) measure for carrying out dry and wet joint transformation, if Chinese patent is " using gravity-flow ventilation and the dry and wet of combined running mode
In joint cooling tower and its application " (CN201510810682.7), it is based on cooling stack, proposes a kind of dry and wet joint
The method of operation, it is indicated that circulating water temperature can be reduced using the combined running mode of series, parallel or mixture length by doing section and wet section
The cooling tower of degree.Dry and wet combines the type of cooling, and a clammy effect also has the limit (ambient wet bulb temperature), and effect is not especially to manage
Think, furthermore has violated the water-saving original intention for building air cooling unit.
For the demand of electric power peak regulation round the clock, advocate uses water-storage and compressed-air energy storage more at present.Water-storage
Though behave is generallyd use by thermoelectricity, this technology is extremely serious to the dependence of the natural conditions such as rivers.Compressed air storage
Can the deficiency of system essentially consist in: (1) conventional compressed air energy-storage system needs extra heat source to heat air, cause efficiency compared with
It is low.Such as Chinese patent " compressed-air energy-storage system " (CN200710098467.4) proposes that one kind is filled out for electric system peak clipping
The compressed-air energy-storage system of paddy, including motor, compressor, aftercooler, gas storage, regenerator, generator, high pressure are saturating
Flat, low-pressure burner, low pressure turbine.Using electric energy compressed air and it is stored in underground, puts compressed air in peak of power consumption
Out, it heats air and drives turbine power generation；(2) even if emerging insulation/isotherm compression air energy storage, such as Chinese patent " one
In kind isotherm compression air energy storage systems and method " (CN201510226671.4), due to making full use of heat regenerative system, without volume
The addition of outer fuel.But still can't resolve following problem: the energy storage density of compressed-air energy-storage system is low, needs air storage chamber mistake
Yu Chong great causes certain pressure for cost of investment；It is especially big to the dependence of geographical conditions if selecting cavern gas storage, then
Addressing is difficult.
Utility model content
For the disadvantages mentioned above and deficiency of the prior art, the utility model is intended to provide one kind and takes into account thermoelectricity air cooling tubes condenser
The device of safe production in summer and power peak regulation uses lithium bromide/water for the absorption generating device of working medium, cooperates height NaOH solution tank NaOH and storage
The energy storage thought of peak regulation round the clock is introduced and thoroughly solves the problems, such as air cooling unit safe production in summer by water pot, while by peak load cutting,
Guarantee Peak power use on daytime load.
The technical scheme adopted by the utility model for solving the technical problem is:
A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, for solving thermoelectricity air cooling unit peace
Whole step summer and system peaking problem, including the first two-way triple valve, the second two-way triple valve, thermoelectricity air cooling tubes condenser, storage round the clock
Water pot and absorption generating device, which is characterized in that
The first port of the first two-way triple valve and the steam exhaust outlet of thermal power steam turbine, second port warp described in
After the hot side of thermoelectricity air cooling tubes condenser with the inlet communication of the water tank, the of third port and the described second two-way triple valve
Single port connection,
The absorption generating device include vapor absorber, steam generator, solution pump, throttle valve, hypotonic solution tank and
High-pressure solution tank, wherein
The steam output end of the steam generator is connected to the second port of the described second two-way triple valve,
The third port of second two-way triple valve is connected to the low-pressure steam input terminal of the vapor absorber,
The low concentration solution output end of the vapor absorber is successively through the hypotonic solution tank, solution pump and the steaming
The low concentration liquid input terminal of vapour generator is connected to,
The highly concentrated solution output end of the steam generator is successively passed through after the high-pressure solution tank, throttle valve described
Vapor absorber,
Heat-exchanging component, the input end of the heat-exchanging component and the grade of thermal power steam turbine are additionally provided in the steam generator
Between bleed steam pipework be connected to.
Preferably, the working medium for absorbing generating device is to for lithium bromide water solution.
Preferably, one is also set up in the connection between the hot side of the thermoelectricity air cooling tubes condenser and the import of the water tank
Triple valve, the first port of the triple valve are connected to the hot side outlet of the thermoelectricity air cooling tubes condenser, second port and the external world
Hydrophobic pipeline connection, the inlet communication of third port and the water tank.
Further, the device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model, including
Surrounding air be high temperature work by day mode and surrounding air is the mode of working at night of low temperature.
Further, when in it is described work by day mode when, the steam exhaust of the thermal power steam turbine passes through described first pair
It is divided into two-way to triple valve, is passed through the hot side of the thermoelectricity air cooling tubes condenser all the way, another way is through the described second two-way triple valve
It is passed through the vapor absorber；Highly concentrated solution at the same time from the high-pressure solution tank is passed through described through the throttle valve
Vapor absorber；The highly concentrated solution absorbs steam in the vapor absorber, and the steam is converted to liquid storage
There are in the hypotonic solution tank, while reducing solution concentration.Compared to traditional thermoelectricity air cooling tubes condenser, it is air-cooled solidifying to flow through thermoelectricity
The thermal power steam turbine steam exhaust flow of vapour device reduces, and leads to the reduction of thermal power steam turbine exhaust pressure.
Further, when environment temperature changes, adjustment enters the vapor absorption by the throttle valve adjustment
The flow of the highly concentrated solution of device, and then change the flow by the described first two-way triple valve circulation condenser, make steam turbine
Back pressure is stablized in a certain setting value.
Further, when in it is described work at night mode when, the low concentration solution warp that flows out in the hypotonic solution tank
Enter the steam generator after solution pump pressurization, occur to flow into after some vapor out in the steam generator described in
High-pressure solution tank, it is empty that the steam occurred is successively passed through the thermoelectricity through the described second two-way triple valve, the first two-way triple valve
The hot side of cold condenser is finally passed through the water tank.Since the more traditional thermoelectricity of quantity of steam of circulation thermoelectricity air cooling tubes condenser is empty
Cold condenser increased, and when thermal power steam turbine is run at night, back pressure increased than conventional rack, generating efficiency and power generation
Amount is decayed, but positive value low power consumption at night, will not influence the power supply and demand balance in night.
Further, by adjusting the flow for the low concentration solution for flowing into steam generator, the steam generator is adjusted
Steam generating amount, stablize the thermal power steam turbine back pressure in a certain setting value.
Further, the thermal power steam turbine is in when working by day mode, and exhaust pressure is slightly below in the night
Between operating mode when back pressure.The device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model, machine
Group whole day only works under two backpressure conditions (two back pressures are relatively).Caused by avoiding ambient air temperature from increasing
Thermoelectricity air cooling tubes condenser heat exchange property deteriorates and thermal power steam turbine back pressure increases, and guarantees fired power generating unit safe production in summer.Simultaneously sufficiently
Using evening environment temperature it is lower caused by thermoelectricity air cooling tubes condenser heat exchange property is good and low power consumption the characteristics of, increase at night
Cooling capacity is made, for supplementing the underload of thermoelectricity air cooling tubes condenser on daytime to thermal motor in the load of flame enrichment electricity air cooling tubes condenser
Pressure caused by group.
Compared with the existing technology, the dress for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model
It sets, advantageous effects are as follows: (1) thermoelectricity air cooling unit safe production in summer problem is able to solve, on the basis of former condenser equipment
On, it is equipped with utility model device, when the ambient temperature changes, by adjusting the steam flow of circulation condenser, white
In the case of its (high ambient temperature), reduce the load of condenser, at night (low ambient temperature), increases the load of condenser.
The heat exchange potentiality of condenser are sufficiently excavated from time dimension, realize scheduling of the heat exchange amount between round the clock.To make steam turbine arrange
Vapour back pressure is able to maintain stabilization in whole day, guarantees fired power generating unit safe production in summer.As shown in figure 4, undulate quantity before being transformed
Back pressure is reduced 13.90kPa in value, and when running daytime similar in stablizing two by the back pressure of 24.91kPa.(2) summer is adapted to
Peak regulation demand round the clock when high temperature, in the utility model, daytime is the absorber work of relatively low pressure, and night is the hair of relatively high pressure
Raw device work to guarantee low back pressure on thermal power steam turbine steam discharge daytime, night high back pressure, and then guarantees generating efficiency on daytime and hair
Electricity is high, and night generating efficiency and generated energy are low.Peak regulation demand round the clock has been adapted to, has solved traditional power generation on condenser daytime effect
Rate, generated energy are low with the big intrinsic contradictions of electricity consumption.As shown in figure 5, the plant modification mentioned through the utility model, torsion tradition
The small status of fired power generating unit evening generated energy daytime generated energy.Resulting evening generated energy is low, generates amount electricity high effect daytime
Comply fully with the rule of changes in demand round the clock of electricity consumption.From right side, red coordinate be can be seen that engineered, the accumulation generated energy of whole day
There are few decaying.
Detailed description of the invention
Fig. 1 is the schematic device that the utility model takes into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation；
Fig. 2 is the device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model in high temperature on daytime
When workflow schematic diagram；
Fig. 3 is the device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model in Low Night Temperature
When workflow schematic diagram；
Fig. 4 is the steam turbine exhaust pressure contrast schematic diagram of transformation front and back；
Fig. 5 is the generated energy contrast schematic diagram of transformation front and back.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.
As shown in Figure 1, the device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation of the utility model, is used for
Solve thermoelectricity air cooling unit safe production in summer and system peaking problem, including the first two-way triple valve 1, the second two-way triple valve round the clock
2, thermoelectricity air cooling tubes condenser 3, water tank 4 and absorption generating device.Wherein, the first port and thermoelectricity of the first two-way triple valve 1
The steam exhaust outlet of steam turbine, inlet communication of the second port after the hot side of thermoelectricity air cooling tubes condenser 3 with water tank 4, the
Three ports are connected to the first port of the second two-way triple valve 2, the import of the hot side of thermoelectricity air cooling tubes condenser 3 and water tank 4 it
Between connection on also set up a triple valve, the first port of triple valve is connected to the hot side outlet of thermoelectricity air cooling tubes condenser 3, second
Port is connected to extraneous hydrophobic pipeline, the inlet communication of third port and water tank 4.
Absorb generating device, working medium to be lithium bromide water solution, including steam generator 5, high-pressure solution tank 6, throttle
Valve 7, vapor absorber 8, hypotonic solution tank 9, solution pump 10, wherein the steam output end of steam generator 5 and second two-way three
The second port of port valve 2 is connected to, and the third port of the second two-way triple valve 2 and the low-pressure steam input terminal of vapor absorber 8 connect
Logical, the low concentration solution output end of vapor absorber 8 is successively low with steam generator 5 through hypotonic solution tank 9, solution pump 10
The connection of concentration liquid input terminal, the highly concentrated solution output end of steam generator 5 are successively passed through after high-pressure solution tank 6, throttle valve 7
Vapor absorber 8 is additionally provided with heat-exchanging component in steam generator 5, between the input end of heat-exchanging component and the grade of thermal power steam turbine
Bleed steam pipework connection.
The device for taking into account thermoelectricity air cooling tubes condenser 3 safe production in summer and power peak regulation of the utility model, including surrounding air
For high temperature work by day mode and surrounding air is the mode of working at night of low temperature.
When in work by day mode when, the steam exhaust of thermal power steam turbine is divided by the first two-way triple valve 1 for two-way, all the way
It is passed through the hot side of thermoelectricity air cooling tubes condenser 3, another way is passed through vapor absorber 8 through the second two-way triple valve 2；It comes from the same time
The highly concentrated solution of high-pressure solution tank 6 is passed through vapor absorber 8 through throttle valve 7；Highly concentrated solution absorbs in vapor absorber 8
Steam, and steam is converted to fluid storage in hypotonic solution tank 9, while reducing solution concentration.It is empty compared to traditional thermoelectricity
Cold condenser 3, the thermal power steam turbine steam exhaust flow for flowing through thermoelectricity air cooling tubes condenser 3 reduce, and lead to thermal power steam turbine exhaust pressure
It reduces.When environment temperature changes, adjustment throttle valve 7 adjusts the flow for entering the highly concentrated solution of vapor absorber 8, into
And change the flow by the first two-way circulation of triple valve 1 condenser 3, stablize turbine back pressure in a certain setting value.
When in work at night mode when, the low concentration solution flowed out in hypotonic solution tank 9 pressurizes laggard through solution pump 10
Enter steam generator 5, flows into high-pressure solution tank 6 after some vapor out occurs in steam generator 5, the steam occurred is successively
It is passed through the hot side of thermoelectricity air cooling tubes condenser 3 through the second two-way triple valve 2, the first two-way triple valve 1, is finally passed through water tank 4.By
It increased in the more traditional thermoelectricity air cooling tubes condenser 3 of quantity of steam of circulation thermoelectricity air cooling tubes condenser 3, thermal power steam turbine is transported at night
When row, back pressure increased than conventional rack, and generating efficiency is decayed with generated energy, but positive value low power consumption at night, no
It will affect the power supply and demand balance in night.By adjusting the steam generating amount of steam generator 5, stablize thermal power steam turbine back pressure
In a certain setting value.
Thermal power steam turbine is in when working by day mode, and exhaust pressure, which is slightly below, is in back when working at night mode
Pressure.The device for taking into account thermoelectricity air cooling tubes condenser 3 safe production in summer and power peak regulation of the utility model, unit whole day are only carried on the back at two
Pressure condition works under (two back pressures are relatively).To avoid thermoelectricity air cooling tubes condenser 3 caused by ambient air temperature increases
Heat exchange property deteriorates and thermal power steam turbine back pressure increases, and guarantees fired power generating unit safe production in summer.Evening environment temperature is made full use of simultaneously
Spend it is lower caused by 3 heat exchange property of thermoelectricity air cooling tubes condenser well and the characteristics of low power consumption, increase that thermoelectricity is air-cooled to coagulate at night
Cooling capacity is made, for supplementing the underload of thermoelectricity air cooling tubes condenser on daytime 3 to caused by fired power generating unit in the load of vapour device 3
Pressure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model
Within the scope of.
Claims (9)
1. a kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, including the first two-way triple valve, second
Two-way triple valve, thermoelectricity air cooling tubes condenser, water tank and absorption generating device, which is characterized in that
The first port of the first two-way triple valve and the steam exhaust outlet of thermal power steam turbine, second port is through the thermoelectricity
After the hot side of air cooling tubes condenser with the inlet communication of the water tank, the first end of third port and the described second two-way triple valve
Mouth connection,
The absorption generating device includes vapor absorber, steam generator, solution pump, throttle valve, hypotonic solution tank and high pressure
NaOH solution tank NaOH, wherein
The steam output end of the steam generator is connected to the second port of the described second two-way triple valve,
The third port of second two-way triple valve is connected to the low-pressure steam input terminal of the vapor absorber,
The low concentration solution output end of the vapor absorber is successively sent out through the hypotonic solution tank, solution pump and the steam
The low concentration liquid input terminal connection of raw device,
The highly concentrated solution output end of the steam generator is successively passed through the steam after the high-pressure solution tank, throttle valve
Absorber,
It is additionally provided with heat-exchanging component in the steam generator, is taken out between the input end of the heat-exchanging component and the grade of thermal power steam turbine
Vapor pipeline connection.
2. the device according to claim 1 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In the working medium for absorbing generating device is to for lithium bromide water solution.
3. the device according to claim 1 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In, a triple valve is also set up in the connection between the hot side of the thermoelectricity air cooling tubes condenser and the import of the water tank, it is described
The first port of triple valve is connected to the hot side outlet of the thermoelectricity air cooling tubes condenser, and second port and extraneous hydrophobic pipeline connect
It is logical, the inlet communication of third port and the water tank.
4. the device according to claim 1 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In, described device include surrounding air be high temperature work by day mode and surrounding air is the mode of working at night of low temperature.
5. the device according to claim 4 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In, when in it is described work by day mode when, the steam exhaust of the thermal power steam turbine is divided into two by the described first two-way triple valve
Road, is passed through the hot side of the thermoelectricity air cooling tubes condenser all the way, and another way is passed through the steam through the described second two-way triple valve and inhales
Receive device；Highly concentrated solution at the same time from the high-pressure solution tank is passed through the vapor absorber through the throttle valve；Institute
It states highly concentrated solution and absorbs steam in the vapor absorber, and it is molten in the low pressure that the steam is converted to fluid storage
In flow container, while reducing solution concentration.Compared to traditional thermoelectricity air cooling tubes condenser, the thermoelectricity steamer of thermoelectricity air cooling tubes condenser is flowed through
Machine steam exhaust flow reduces, and leads to the reduction of thermal power steam turbine exhaust pressure.
6. the device according to claim 5 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In when environment temperature changes, adjustment enters the highly concentrated solution of the vapor absorber by the throttle valve adjustment
Flow, and then change and circulated the flow of condenser by the described first two-way triple valve, stablize turbine back pressure a certain
Setting value.
7. the device according to claim 4 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In, when in it is described work at night mode when, the low concentration solution flowed out in the hypotonic solution tank pressurizes through the solution pump
Enter the steam generator afterwards, flows into the high-pressure solution tank, institute after some vapor out occurs in the steam generator
The steam of generation is successively passed through the heat of the thermoelectricity air cooling tubes condenser through the described second two-way triple valve, the first two-way triple valve
Side is finally passed through the water tank.
8. the device according to claim 7 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
In, by adjusting flow into steam generator low concentration solution flow, adjust the steam generating amount of the steam generator, make
The thermal power steam turbine back pressure is stablized in a certain setting value.
9. the device according to claim 4 for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation, feature exist
When, the thermal power steam turbine is in and works by day mode, exhaust pressure be slightly below be in it is described work at night mode when
Back pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821123906.2U CN208456679U (en) | 2018-07-16 | 2018-07-16 | A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821123906.2U CN208456679U (en) | 2018-07-16 | 2018-07-16 | A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation |
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| CN208456679U true CN208456679U (en) | 2019-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678820A (en) * | 2018-07-16 | 2018-10-19 | 中国科学院工程热物理研究所 | A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation |
-
2018
- 2018-07-16 CN CN201821123906.2U patent/CN208456679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678820A (en) * | 2018-07-16 | 2018-10-19 | 中国科学院工程热物理研究所 | A kind of device for taking into account thermoelectricity air cooling tubes condenser safe production in summer and power peak regulation |
| CN108678820B (en) * | 2018-07-16 | 2024-04-16 | 中国科学院工程热物理研究所 | Device for achieving both thermal power air-cooling condenser safety and electric peak shaving |
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