CN207813674U - For the solidifying condensate system for taking out back of the body heat supply - Google Patents
For the solidifying condensate system for taking out back of the body heat supply Download PDFInfo
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- CN207813674U CN207813674U CN201721782769.9U CN201721782769U CN207813674U CN 207813674 U CN207813674 U CN 207813674U CN 201721782769 U CN201721782769 U CN 201721782769U CN 207813674 U CN207813674 U CN 207813674U
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Abstract
The utility model discloses a kind of for the solidifying condensate system for taking out back of the body heat supply.When in the prior art, during the cold season, there is the risk freezed in cooling tower.In the utility model, Steam Turbine Through IP Admission is connect with turbine low pressure cylinder, turbine low pressure cylinder is connect with condenser, condensate pump, which improves boiler feedwater branch pipe, directly low with No. three heater to be added to connect, the air intake of cooling steam pipe and turbine low pressure cylinder connects, the hydrophobic of heat exchangers for district heating is delivered to No. three low plus heaters, No. four low plus the hydrophobic of heater is delivered to No. three low plus heaters, No. three low plus the hydrophobic of heater is delivered to No. two low plus heaters, No. two low plus the hydrophobic of heater is delivered to that No.1 is low plus heater, No.1 is low plus the hydrophobic of heater is delivered to No. two low plus heater boiler feedwater sides, No. three low plus the hydrophobic of heater can also be fed directly to condenser.The utility model realizes the cascade utilization of residual heat of electric power plant resource, has effectively achieved the antifreeze effect of cooling tower.
Description
Technical field
The utility model belongs to cogeneration of heat and power technical field, and in particular to a kind of for the solidifying condensation water system for taking out back of the body heat supply
System, is particularly suitable for low pressure (LP) cylinder not into the steam power plant of vapour.
Background technology
Currently, China's policy gradually payes attention to the popularization of new energy, the ratio of fired power generating unit is reduced.For thermal power plant,
The steam exhaust of steam turbine is typically to be fallen by air-cooled or water-cooling pattern direct emission, this has resulted in huge cold end loss.
Such as the capacity usage ratio of the subcritical pure condensate units of 300MW is about 38%, wherein cold end loss accounts for about 45%, after extraction for heat supply
The capacity usage ratio of unit is promoted to 60%, but still has 20% condensation low temperature exhaust heat to be discharged, this partial heat is due to product
Position is low and is difficult to directly utilize.Simultaneously as power grid is consumption new energy electric power, the requirement to coal motor group thermoelectricity flexibility is not
Disconnected to reinforce, coal motor group need to realize Ultra-low load operation, could meet the peak regulation demand of power grid, this brings to coal-fired thermal power unit
Great challenge.
Application No. is 201710193938.3 Chinese patents to disclose " steam turbine extraction condensing back pressure system and its adjusting method ",
Nothing needs to change rotor in the system, you can realizes that low pressure (LP) cylinder does not put into operation, which can both increase externally to the greatest extent
Heating load, and can be generated electricity with the realization unit underload of high benefit.When low pressure (LP) cylinder is not into vapour, the low pressure backheat of low pressure (LP) cylinder part
System can then take out without steam, and shortage of heat in condenser, and when cold season, cooling tower then has the risk freezed.
Invention content
Based on the above situation, the utility model overcomes above-mentioned deficiency existing in the prior art, it is proposed that a kind of design conjunction
Reason, dependable performance, the condensate system that heat supply is carried on the back for solidifying pumping based on cascaded utilization of energy.
The technical scheme in the invention for solving the above technical problem is：A kind of condensation water system for carrying on the back heat supply for solidifying pumping
System, including Steam Turbine Through IP Admission, turbine low pressure cylinder, condenser, condensate pump, No.1 be low plus heater, drainage pump, No. two it is low
Add heater, No. three low plus heater, No. four low plus heater, temperature-decreased pressure reducer and heat exchangers for district heatings；It is characterized in that, described
The steam drain of Steam Turbine Through IP Admission is connected by the air intake of communicating pipe and turbine low pressure cylinder, and liquid is equipped on communicating pipe
Press butterfly valve；The steam inlet of cooling steam pipe and the steam drain of Steam Turbine Through IP Admission connect, and the steam of the cooling steam pipe goes out
Mouth is connect with the air intake of turbine low pressure cylinder, and moving direction along steam stream on cooling steam pipe is sequentially installed with the first cut-off
Valve, temperature-decreased pressure reducer, the first regulating valve and the second shut-off valve；The steam drain of the turbine low pressure cylinder is connect with condenser；Institute
The water side for stating condenser is connected with circulating water inlet and circulating water outlet pipe；The water inlet of boiler feed pipe connects with condenser
Connect, and boiler feed pipe upper edge dampening flow direction be sequentially installed with that condensate pump, No.1 be low plus heater, No. two it is low plus plus
Hot device, No. three low plus heaters and No. four low plus heaters；Described No. four low plus heater air intakes pass through No. four low plus pumpings
Steam pipe is connect with Steam Turbine Through IP Admission, and described No. four low plus heater hydrophobic outlets add by the way that No. four drain pipes and No. three are low
Hot device connection；Described No. three low plus the air intakes of heater are low plus extraction steam pipe is connect with Steam Turbine Through IP Admission by No. three, described
No. three low plus heater hydrophobic outlets add heater to connect by the way that No. three drain pipes are low with No. two, and pacify on No. three drain pipes
Equipped with the 4th regulating valve；Described No. two low plus heater air intakes are connected by No. two low plus extraction steam pipes with turbine low pressure cylinder
It connects, No. two low plus heater hydrophobic outlets add heater to connect by the way that No. two drain pipes are low with No.1；The No.1 is low plus adds
The air intake of hot device adds extraction steam pipe to be connect with turbine low pressure cylinder by the way that No.1 is low, and the low hydrophobic outlet for adding heater of No.1 passes through
The No.1 drain pipe feedwater outlet for adding heater low with No.1 is connect, and is equipped with drainage pump on No.1 drain pipe；The heat
The air intake of net heater is connected by heating extraction steam pipe and the steam drain of Steam Turbine Through IP Admission, the heat exchangers for district heating it is hydrophobic
Outlet is connect by the heat supply network drain pipe feed-water inlet for adding heater low with No. three, and the water side of heat exchangers for district heating is connected with heat supply network and returns
Water pipe and heat supply network feed pipe.
Preferably, described No. three low plus heater hydrophobic outlets are also connect by No. three hydrophobic branch pipes with condenser,
And the 5th regulating valve is installed on No. three hydrophobic branch pipes.
Preferably, the No.1 is low plus the feed-water inlet of heater is equipped with the 6th regulating valve, described No. two it is low plus plus
The feedwater outlet of hot device is equipped with third regulating valve, described No. two low plus extraction steam pipe on the first gate valve is installed, the No.1 is low
Add and the second gate valve is installed on extraction steam pipe.
Preferably, the water inlet of boiler feedwater branch pipe and the water outlet of condensate pump connect, boiler feedwater branch pipe goes out
The mouth of a river feed-water inlet for adding heater low with No. three is connect, and the second regulating valve is equipped on boiler feedwater branch pipe.
Preferably, the hydraulic pressure butterfly valve has the function of adjusting and end.
The utility model compared with prior art, has the following advantages and effect：（1）The utility model is designed reasonably, knot
Structure is simple, dependable performance, is based on cascaded utilization of energy principle, efficiently uses the residual heat resources of power plant.（2）In back pressure operating mode,
For low pressure (LP) cylinder not into vapour, No. four low plus heater hydrophobic low with No. three after secondary heating boiler water supply in No. three low plus heater
Add the hydrophobic of heater to be delivered to condenser together, by using the hydrophobic waste heat of heat supply network, has effectively achieved the anti-of cooling tower
Jelly acts on, and also achieves the cascade utilization of waste heat, the operational safety of cooling tower systems has been effectively ensured.（3）By to low pressure (LP) cylinder
The heat regenerative system setting bypass of connection, reduces the resistance that boiler feedwater is generated into low plus heater in back pressure operating mode.（4）It is based on
The principle of temperature counterpart is delivered to that No. three low plus heaters by the heat supply network of heat exchangers for district heating is hydrophobic, reduces directly into oxygen-eliminating device
Caused by do work capacity loss.
Description of the drawings
Fig. 1 is in the utility model embodiment for the solidifying structural schematic diagram for taking out the condensate system for carrying on the back heat supply.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Referring to Fig. 1, it includes Steam Turbine Through IP Admission 1, steam turbine to carry on the back the condensate system of heat supply for solidifying pumping in the present embodiment
Low pressure (LP) cylinder 2, condenser 3, condensate pump 4, No.1 are low plus heater 5, drainage pump 6, two are low plus heater 7, three is low plus adds
Hot device 8, four is low to add heater 9, temperature-decreased pressure reducer 10 and heat exchangers for district heating 11.
The steam drain of Steam Turbine Through IP Admission 1 is connect by communicating pipe 21 with the air intake of turbine low pressure cylinder 2, and is being connected to
Hydraulic pressure butterfly valve 12 is installed, hydraulic pressure butterfly valve 12 has the function of adjusting and end on pipe 21；The steam inlet of cooling steam pipe 22
It is connect with the steam drain of Steam Turbine Through IP Admission 1, the steam (vapor) outlet of cooling steam pipe 22 connects with the air intake of turbine low pressure cylinder 2
It connects, moving direction along steam stream on cooling steam pipe 22 is sequentially installed with the first shut-off valve 13, the tune of temperature-decreased pressure reducer 10, first
Save valve 14 and the second shut-off valve 15.
The steam drain of turbine low pressure cylinder 2 is connect with condenser 3；The water side of condenser 3 is connected with circulating water inlet 36
With circulating water outlet pipe 35；The water inlet of boiler feed pipe 27 is connect with condenser 3, and flow in 27 upper edge of boiler feed pipe
Dynamic direction is sequentially installed with that condensate pump 4, No.1 be low plus heater 5, two is low plus heater 7, three is low plus heater 8 and four
Number low plus heater 9；No. four low plus the air intakes of heater 9 are low plus extraction steam pipe 23 is connect with Steam Turbine Through IP Admission 1 by No. four,
No. four low plus heater 9 hydrophobic outlets add heater 8 to connect by the way that No. four drain pipes 28 are low with No. three；No. three low plus heaters
By the way that No. three low plus extraction steam pipe 24 connect with Steam Turbine Through IP Admission 1, No. three low hydrophobic outlets for adding heater 8 lead to 8 air intake
It crosses that No. three drain pipes 29 are low with No. two plus heater 7 is connect, and the 4th regulating valve 18 is installed on No. three drain pipes 29, No. three
Low plus heater 8 hydrophobic outlet is also connect by No. three hydrophobic branch pipes 30 with condenser 3, and is pacified on No. three hydrophobic branch pipes 30
Equipped with the 5th regulating valve 19；No. two low plus heater 7 air intakes are connected by No. two low plus extraction steam pipes 25 with turbine low pressure cylinder 2
Connect, No. two low plus extraction steam pipe 25 on the first gate valve 40 is installed, No. two low plus heater 7 hydrophobic outlets pass through No. two drain pipes
32 is low with No.1 plus heater 5 connect, and No. two low feedwater outlets for adding heater 7 are equipped with third regulating valve 17；No.1 is low to be added
By the way that No.1 is low plus extraction steam pipe 26 is connect with turbine low pressure cylinder 2, No.1 is low to be added and is installed on extraction steam pipe 26 air intake of heater 5
There is the second gate valve 41, No.1 is low to add the hydrophobic outlet of heater 5 to pass through the water supply for adding heater 5 low with No.1 of No.1 drain pipe 31
Outlet connection, and drainage pump 6 is installed on No.1 drain pipe 31, the low feed-water inlet for adding heater 5 of No.1 is equipped with the 6th
Regulating valve 20.
The air intake of heat exchangers for district heating 11 is connect by heating extraction steam pipe 33 with the steam drain of Steam Turbine Through IP Admission 1, heat supply network
The hydrophobic outlet of heater 11 is connect by the feed-water inlet for adding heater 8 low with No. three of heat supply network drain pipe 34, heat exchangers for district heating
11 water side is connected with heat supply network return pipe 37 and heat supply network feed pipe 38.
The water inlet of boiler feedwater branch pipe 39 is connect with the water outlet of condensate pump 4, the water outlet of boiler feedwater branch pipe 39
Low with No. three plus heater 8 feed-water inlet is connect, and the second regulating valve 16 is equipped on boiler feedwater branch pipe 39.
The concrete operations of the present embodiment are as follows：
In supplying thermal condition, the first shut-off valve 13 and the second shut-off valve 15, the cooling steam system of turbine low pressure cylinder 2 are closed
System does not put into operation；At this point, adjusting the aperture of hydraulic pressure butterfly valve 12, it is low that the steam discharge of a part of Steam Turbine Through IP Admission 1 enters steam turbine
Cylinder pressure 2 continues to do work, and the steam discharge of another part Steam Turbine Through IP Admission 1 enters heat exchangers for district heating 11 by heating extraction steam pipe 33 and heats
Hot net water carrys out external heat supply, and heat supply network is hydrophobic to be delivered to No. three low plus heaters 8 by heat supply network drain pipe 34；At this point, closing second
Regulating valve 16, opens third regulating valve 17 and the 6th regulating valve 20, and the boiler feedwater that condensate pump 4 exports first sequentially enters No.1
Low plus heater 5 and No. two low plus progress step heating of heater 7, are then delivered to No. three low plus heaters 8 and No. four successively
Low plus heater 9；At this point, closing the 5th regulating valve 19, the 4th regulating valve 18 is opened, No. four low plus heater 9 hydrophobic advanced
No. three low plus heater 8 exchanges heat, then with No. three it is low plus heater 8 it is hydrophobic be mixed it is low plus heater 7 changes into No. two
Then heat adds heater 5 to exchange heat, finally by drainage pump 6 with No. two low plus heater 8 hydrophobic are mixed into No.1 is low again
It is delivered to No. two low plus heater 7 boiler feedwater sides.
In back pressure operating mode, the first shut-off valve 13 and the second shut-off valve 15, the cooling steam system of turbine low pressure cylinder 2 are opened
System does not put into operation；At this point, closing hydraulic pressure butterfly valve 12,1 steam discharge of Steam Turbine Through IP Admission all enters heat by heating extraction steam pipe 33
Net heater 11 heats the external heat supply of hot net water, and heat supply network is hydrophobic to be delivered to No. three low plus heaters 8 by heat supply network drain pipe 34；
The aperture of the first regulating valve 14 is adjusted at this time, and cooling steam first enters back into turbine low pressure cylinder 2 after pressure and temperature reducing；It closes at this time
Third regulating valve 17, the 6th regulating valve 20, the first gate valve 40 and the second gate valve 41, open the second regulating valve 16, and condensate pump 4 is defeated
The boiler feedwater gone out is directly entered No. three low plus heaters 8；The 4th regulating valve 18 of closing at this time, the 5th regulating valve 19 of opening, four
Number low plus heater 9 hydrophobic advanced No. three low plus heater 8 exchanges heat, and then low with No. three plus the hydrophobic of heater 8 mixes one
It rises and is directly entered condenser 3, the temperature for improving recirculated water.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Claiming etc. can be different, described in this specification above content is only to the utility model structure example explanation.
The equivalence changes or simple change that all structure, feature and principles according to the utility model patent concept are done, are included in
In the protection domain of the utility model patent.Those skilled in the art of the present invention can be to described specific
Embodiment is done various modifications or additions or is substituted by a similar method, structure without departing from the utility model or
Person beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of for the solidifying condensate system for taking out back of the body heat supply, including Steam Turbine Through IP Admission（1）, turbine low pressure cylinder（2）, condensing
Device（3）, condensate pump（4）, No.1 is low plus heater（5）, drainage pump（6）, No. two low plus heaters（7）, No. three low plus heating
Device（8）, No. four low plus heaters（9）, temperature-decreased pressure reducer（10）And heat exchangers for district heating（11）；It is characterized in that, the steam turbine
Intermediate pressure cylinder（1）Steam drain pass through communicating pipe（21）With turbine low pressure cylinder（2）Air intake connection, the communicating pipe（21）On
Hydraulic pressure butterfly valve is installed（12）；Cooling steam pipe（22）Steam inlet and Steam Turbine Through IP Admission（1）Steam drain connection, it is described
Cooling steam pipe（22）Steam (vapor) outlet and turbine low pressure cylinder（2）Air intake connection, in cooling steam pipe（22）On along
Steam flow direction is sequentially installed with the first shut-off valve（13）, temperature-decreased pressure reducer（10）, the first regulating valve（14）With the second cut-off
Valve（15）；The turbine low pressure cylinder（2）Steam drain and condenser（3）Connection；The condenser（3）Water side be connected with and follow
Ring water water inlet pipe（36）And circulating water outlet pipe（35）；Boiler feed pipe（27）Water inlet and condenser（3）Connection, the pot
Stove feed pipe（27）Upper edge dampening flow direction is sequentially installed with condensate pump（4）, No.1 is low plus heater（5）, No. two it is low plus
Heater（7）, No. three low plus heaters（8）Plus heater low with No. four（9）；Described No. four low plus heaters（9）Air intake
Pass through No. four low plus extraction steam pipes（23）With Steam Turbine Through IP Admission（1）Connection, described No. four low plus heaters（9）Hydrophobic outlet it is logical
Cross No. four drain pipes（28）Plus heater low with No. three（8）Connection；Described No. three low plus heaters（8）Air intake pass through No. three
Low plus extraction steam pipe（24）With Steam Turbine Through IP Admission（1）Connection, described No. three low plus heaters（8）Hydrophobic outlet by No. three dredge
Water pipe（29）Plus heater low with No. two（7）Connection, No. three drain pipes（29）On the 4th regulating valve is installed（18）；It is described
No. two low plus heaters（7）Air intake pass through that No. two low plus extraction steam pipes（25）With turbine low pressure cylinder（2）Connection, described No. two
Low plus heater（7）Hydrophobic outlet pass through No. two drain pipes（32）Plus heater low with No.1（5）Connection；The No.1 is low to be added
Heater（5）Air intake by the way that No.1 is low plus extraction steam pipe（26）With turbine low pressure cylinder（2）Connection, the No.1 is low plus heats
Device（5）Hydrophobic outlet pass through No.1 drain pipe（31）Plus heater low with No.1（5）Feedwater outlet connection, the No.1 dredge
Water pipe（31）On drainage pump is installed（6）；The heat exchangers for district heating（11）Air intake pass through heating extraction steam pipe（33）With steamer
Machine intermediate pressure cylinder（1）Steam drain connection, the heat exchangers for district heating（11）Hydrophobic outlet pass through heat supply network drain pipe（34）With No. three
Low plus heater（8）Feed-water inlet connection, the heat exchangers for district heating（11）Water side be connected with heat supply network return pipe（37）And heat
Net feed pipe（38）.
2. according to claim 1 carry on the back the condensate system of heat supply for solidifying take out, which is characterized in that described No. three it is low plus plus
Hot device（8）Hydrophobic outlet also pass through No. three hydrophobic branch pipes（30）With condenser（3）Connection, No. three hydrophobic branch pipes（30）On
5th regulating valve is installed（19）.
3. according to claim 1 be used for the solidifying condensate system taken out and carry on the back heat supply, which is characterized in that the No.1 is low plus adds
Hot device（5）Feed-water inlet the 6th regulating valve is installed（20）, described No. two low plus heaters（7）Feedwater outlet be equipped with
Three regulating valves（17）, described No. two low plus extraction steam pipes（25）On the first gate valve is installed（40）, the No.1 is low to add extraction steam pipe
（26）On the second gate valve is installed（41）.
4. according to claim 1 for the solidifying condensate system for taking out back of the body heat supply, which is characterized in that boiler feedwater branch pipe
（39）Water inlet and condensate pump（4）Water outlet connection, the boiler feedwater branch pipe（39）Water outlet and No. three it is low plus
Heater（8）Feed-water inlet connection, the boiler feedwater branch pipe（39）On the second regulating valve is installed（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782769.9U CN207813674U (en) | 2017-12-19 | 2017-12-19 | For the solidifying condensate system for taking out back of the body heat supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782769.9U CN207813674U (en) | 2017-12-19 | 2017-12-19 | For the solidifying condensate system for taking out back of the body heat supply |
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| Publication Number | Publication Date |
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| CN207813674U true CN207813674U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721782769.9U Active CN207813674U (en) | 2017-12-19 | 2017-12-19 | For the solidifying condensate system for taking out back of the body heat supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
-
2017
- 2017-12-19 CN CN201721782769.9U patent/CN207813674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
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