CN208184797U - A kind of solidifying pumping back heating system based on two unit black soy sauce vapour - Google Patents
A kind of solidifying pumping back heating system based on two unit black soy sauce vapour Download PDFInfo
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- CN208184797U CN208184797U CN201820287947.9U CN201820287947U CN208184797U CN 208184797 U CN208184797 U CN 208184797U CN 201820287947 U CN201820287947 U CN 201820287947U CN 208184797 U CN208184797 U CN 208184797U
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Abstract
The utility model relates to a kind of, and the solidifying pumping based on two unit black soy sauce vapour carries on the back heating system.The cascade utilization of energy is energy-efficient important measures.The utility model includes No.1 cogeneration units, No. two cogeneration units and cooling steam system, cooling steam system is provided with the first cooling steam pipe and the second cooling steam pipe, the air intake of first cooling steam pipe and the second cooling steam pipe is connect with the low pressure (LP) cylinder regenerative steam mouth of No. two cogeneration units, the venthole of first cooling steam pipe is connect with the LP steam admission of No.1 cogeneration units, and the venthole of the second cooling steam pipe is connect with the low pressure (LP) cylinder regenerative steam mouth of No.1 cogeneration units.The utility model carries out desuperheat to cooling steam using indirect heat exchange, it ensure that the quality of cooling steam, simultaneously using the turbine low pressure cylinder regenerative steam after another acting as the vapour source of cooling steam, using a variety of cooling steams into vapour, the cooling effect for improving low pressure (LP) cylinder improves the utilization rate of energy.
Description
Technical field
The utility model belongs to cogeneration of heat and power technical field, and in particular to a kind of solidifying pumping back confession based on two unit black soy sauce vapour
Hot systems are particularly suitable for the steam power plant with two units.
Background technique
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 usually 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 unit 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, just be able to satisfy the peak regulation demand of power grid, this brings to coal-fired thermal power unit
Great challenge.
Currently, application No. is the Chinese patents of 201711165679.X to disclose a kind of " cooling for cutting off low pressure (LP) cylinder heat supply
System and working method ", carries out low pressure (LP) cylinder when realizing low pressure (LP) cylinder not into vapour effectively cooling, and directly uses intermediate pressure cylinder steam discharge
First pressure and temperature reducing is needed since temperature and pressure parameter is excessively high as cooling steam, causes irreversible damage to a certain extent
It loses, the quality for reducing cooling steam in cooling steam containing water droplet is on the other hand easily caused when using spray desuperheating.Needle
To this phenomenon and domestic steam power plant is combined to be usually provided with two cogeneration units, and carry out utility model creation, mentioned
When having gone out using the low pressure (LP) cylinder regenerative steam of another cogeneration units as this TV station cogeneration units low pressure (LP) cylinder not into vapour
Cooling steam source.
Utility model content
Based on the above situation, the utility model overcomes the above deficiencies in the existing technologies, proposes a kind of design conjunction
Reason, reliable performance are advantageously implemented the solidifying pumping back heating system based on two unit black soy sauce vapour of cascaded utilization of energy.
The technical scheme in the invention for solving the above technical problem is: a kind of solidifying pumping back based on two unit black soy sauce vapour
Heating system, including No.1 cogeneration units, No. two cogeneration units and cooling steam system；It is characterized by:
The No.1 cogeneration units include: No.1 Steam Turbine Through IP Admission, No.1 turbine low pressure cylinder, No.1 condenser
Pass through No.1 communicating pipe and No.1 turbine low pressure cylinder with the steam drain of No.1 condensate pump, the No.1 Steam Turbine Through IP Admission
Air intake connection, and No.1 back pressure butterfly valve and the solidifying butterfly of No.1 pumping are sequentially installed with along steam flow direction on No.1 communicating pipe
Valve, the No.1 Steam Turbine Through IP Admission are connected with No.1 heating extraction steam pipe, the steam drain and one of the No.1 turbine low pressure cylinder
The connection of number condenser, the No.1 condenser are connect with No.1 condensate pump；The No.1 cogeneration units further include No.1
Heat regenerative system, the No.1 heat regenerative system include No.1 level-one low-pressure heater and No.1 second level low-pressure heater, the No.1
The water inlet of level-one low-pressure heater is connect with the water outlet of No.1 condensate pump, and the air intake of No.1 level-one low-pressure heater is logical
It crosses No.1 level-one extraction steam pipe to connect with the level-one extraction opening of No.1 turbine low pressure cylinder, and is equipped on No.1 level-one extraction steam pipe
The water inlet of 13rd gate valve, the No.1 second level low-pressure heater is connect with the water outlet of No.1 level-one low-pressure heater, and one
The air intake of number second level low-pressure heater is connect by No.1 second level extraction steam pipe with the second level extraction opening of No.1 turbine low pressure cylinder,
And the 14th gate valve is installed on No.1 second level extraction steam pipe；
No. two cogeneration units include No. two Steam Turbine Through IP Admissions, No. two turbine low pressure cylinders, No. two condensers
With No. two condensate pumps, the steam drains of No. two Steam Turbine Through IP Admissions passes through No. two communicating pipes and No. two turbine low pressure cylinders
Air intake connection, and be equipped with No. two on No. two communicating pipes and take out solidifying butterfly valve, No. two Steam Turbine Through IP Admissions are connected with No. two
The steam drain of heating extraction steam pipe, No. two turbine low pressure cylinders is connect with No. two condensers, No. two condensers and No. two
Condensate pump connection；No. two cogeneration units further include No. two heat regenerative systems, and No. two heat regenerative systems include No. two
Level-one low-pressure heater and No. two second level low-pressure heaters, the water inlet and No. two condensed waters of No. two level-one low-pressure heaters
The water outlet of pump connects, and the air intake of No. two level-one low-pressure heaters passes through No. two level-one extraction steam pipes and No. two turbine low pressure cylinders
The connection of level-one extraction opening, the water outlet company of the water inlet of No. two second level low-pressure heaters and No. two level-one low-pressure heaters
It connects, the air intake of No. two second level low-pressure heaters passes through the second level extraction opening of No. two second level extraction steam pipes and No. two turbine low pressure cylinders
Connection；
The cooling steam system includes the first cooling steam pipe and the second cooling steam pipe；The first cooling steam pipe
On along steam flow direction be sequentially installed with the first decompressor, the first Desuperheating device and the first steam parameter measuring device,
The air intake of the first cooling steam pipe is connect with the extraction opening of No. two turbine low pressure cylinders, the first cooling steam pipe into
Steam ports is sequentially installed with the first shut-off valve and the first regulating valve along steam flow direction, and the first cooling steam pipe goes out vapour
Mouth is connect with the air intake of No.1 turbine low pressure cylinder, is equipped with the second shut-off valve, institute in the venthole of the first cooling steam pipe
The cooling water inlet and cooling water outlet for stating the first Desuperheating device are connected separately with the first cooling water inlet pipe and the first cooling water goes out
Pipe；On the second cooling steam pipe along steam flow direction be sequentially installed with the second decompressor, the second Desuperheating device and
The extraction opening of second steam parameter measuring device, the air intake of the second cooling steam pipe and No. two turbine low pressure cylinders connects
It connects, is sequentially installed with third shut-off valve and the second regulating valve along steam flow direction in the air intake of the second cooling steam pipe,
The venthole of the second cooling steam pipe is connect with the extraction opening of No.1 turbine low pressure cylinder, in going out for the second cooling steam pipe
Steam ports is equipped with the 4th shut-off valve, and it is cold that the cooling water inlet and cooling water outlet of second Desuperheating device are connected separately with second
But water inlet pipe and the second cooling water outlet tube.
Cooling steam system includes the first cooling steam pipe and the second cooling steam pipe can be sufficiently to No.1 steam turbine low-pressure
Cylinder is cooled down, especially the final stage and second last stage blade of No.1 turbine low pressure cylinder；Realize cascaded utilization of energy while into
One step improves the utilization rate of energy.
Preferably, first decompressor is provided with the bypass of the first throttled steam, and in the steaming of the first decompressor
The first gate valve, the second gate valve and third gate valve are separately installed in vapor inlet, steam (vapor) outlet and the bypass of the first throttled steam；It is described
Second decompressor is provided with the bypass of the second throttled steam, and the steam inlet in the second decompressor, steam (vapor) outlet and second
The 7th gate valve, the 8th gate valve and the 9th gate valve are separately installed in throttled steam bypass.
Preferably, a Desuperheating device is provided with the bypass of the first desuperheated system, and in the steam of the first Desuperheating device
The 4th gate valve, the 5th gate valve and the 6th gate valve are separately installed in import, steam (vapor) outlet and the bypass of the first desuperheated system；Described
Two Desuperheating devices are provided with the bypass of the second desuperheated system, and the steam inlet in the second Desuperheating device, steam (vapor) outlet and second subtract
The tenth gate valve, the 11st gate valve and the 12nd gate valve are separately installed in warm steam by-pass.
Preferably, first Desuperheating device and the second Desuperheating device are dividing wall type vapor-water heat exchanger, the first desuperheat
The cooling water source of device and the second Desuperheating device can come from condensed water, boiler replenishing water or the low-temperature circulating water of steam power plant.
Preferably, the first steam parameter measuring device and the second steam parameter measuring device include steam flow
Measuring instrument, bourdon gauge and vapor (steam) temperature measuring instrument.
Preferably, the No.1 heat regenerative system further includes No.1 three-level low-pressure heater, the No.1 three-level low pressure adds
The water inlet of hot device is connect with the water outlet of No.1 second level low-pressure heater, and the air intake of No.1 three-level low-pressure heater passes through one
Number three-level extraction steam pipe is connect with the three-level extraction opening of No.1 turbine low pressure cylinder, and is equipped with the tenth on No.1 three-level extraction steam pipe
Five gate valves；No. two heat regenerative systems further include No. two three-level low-pressure heaters, the water inlet of No. two three-level low-pressure heaters
Mouth is connect with the water outlet of No. two second level low-pressure heaters, and the air intake of No. two three-level low-pressure heaters passes through No. two three-level steam extractions
Pipe is connect with the three-level extraction opening of No. two turbine low pressure cylinders.
Preferably, the No.1 back pressure butterfly valve is the valve without mechanical position limitation, the fluid No leakage when valve closes entirely；One
Number take out solidifying butterfly valve and No. two to take out solidifying butterfly valve be the valve for having mechanical position limitation, when valve closes entirely, fluid is still negotiable.
Preferably, the second level extraction opening of the air intake of the first cooling steam pipe and No. two turbine low pressure cylinders connects
It connects；The air intake of the second cooling steam pipe is connect with the level-one extraction opening of No. two turbine low pressure cylinders or second level extraction opening,
The venthole of the second cooling steam pipe is connect with the level-one extraction opening of No.1 turbine low pressure cylinder or second level extraction opening.
Preferably, the second level extraction opening or three of the air intake of the first cooling steam pipe and No. two turbine low pressure cylinders
Grade extraction opening connection；The level-one extraction opening of the air intake of the second cooling steam pipe and No. two turbine low pressure cylinders, second level are taken out
Steam ports or the connection of three-level extraction opening, the level-one steam extraction of the venthole and No.1 turbine low pressure cylinder of the second cooling steam pipe
Mouth, second level extraction opening or the connection of three-level extraction opening.
First cooling steam pipe and the second cooling steam pipe use a variety of cooling steams into vapour, cooling steam steam admission mode spirit
It is living, the cooling effect of low pressure (LP) cylinder is improved, while realizing making full use of for energy.
A kind of adjusting method of the solidifying pumping back heating system based on two unit black soy sauce vapour as described above, it is characterised in that:
The adjusting method is as follows:
When No.1 cogeneration units are extraction for heat supply operating condition, standard-sized sheet No.1 back pressure butterfly valve adjusts No.1 and takes out solidifying butterfly valve
Aperture, a part of steam discharge of No.1 Steam Turbine Through IP Admission continues to do by entering No.1 turbine low pressure cylinder No.1 communicating pipe
Function；Another part steam discharge of No.1 Steam Turbine Through IP Admission passes through the external heat supply of No.1 heating extraction steam pipe；At this point, closing the first cut-off
Valve, the second shut-off valve, third shut-off valve and the 4th shut-off valve, cooling steam system do not put into operation.
When No.1 cogeneration units are back pressure supplying thermal condition, full pass No.1 back pressure butterfly valve and No.1 take out and coagulate butterfly valve, and one
The steam discharge of number Steam Turbine Through IP Admission does not enter back into the acting of No.1 turbine low pressure cylinder, but the steam discharge of No.1 Steam Turbine Through IP Admission is complete
Portion passes through the external heat supply of No.1 heating extraction steam pipe；At this point, opening the first shut-off valve and the second shut-off valve, the first cooling steam pipe is first
It puts into operation, second level steam extraction or three-level steam extraction from No. two turbine low pressure cylinders enter No.1 vapour by the first cooling steam pipe
Turbine low pressure (LP) cylinder cools down No.1 turbine low pressure cylinder；It is whether abundant according to the cooling of No.1 turbine low pressure cylinder, to sentence
It is disconnected whether to open the second cooling steam pipe；When the temperature value that the temperature monitoring system of No.1 turbine low pressure cylinder is shown is more than safety
When value, especially the temperature monitoring value of the final stage of No.1 turbine low pressure cylinder and second last stage blade is more than safety value, opens third
Shut-off valve and the 4th shut-off valve, the second cooling steam pipe put into operation, level-one steam extraction, second level from No. two turbine low pressure cylinders
Steam extraction or three-level steam extraction enter No.1 turbine low pressure cylinder by the second cooling steam pipe, to the later half of No.1 turbine low pressure cylinder
Part is fully cooled；When the temperature value that the temperature monitoring system of No.1 turbine low pressure cylinder is shown is within the scope of safety value
When, it closes third shut-off valve and the 4th shut-off valve, the second cooling steam pipe is in close state；It is measured according to the first steam parameter
The measured value of device and the second steam parameter measurement dress, first is that the aperture to judge the first regulating valve and the second regulating valve, thus
Adjust the cooling steam flow in the first cooling steam pipe and the second cooling steam pipe；Second is that judge the first decompressor and
Whether two decompressors put into operation, to guarantee that all cooling steam pressure parameters are met the requirements；Third is that judge first
Whether Desuperheating device and the second Desuperheating device put into operation, to guarantee that all cooling steam temperature parameters are met the requirements.
Compared with prior art, the utility model has the advantages that: (1) the utility model design is closed
Reason, structure is simple, reliable performance, realizes through indirect heat exchange and carries out desuperheat to cooling steam, ensure that the product of cooling steam
Matter；(2) the utility model is reduced using the steam extraction of the turbine low pressure cylinder heat regenerative system after acting as the vapour source of cooling steam
Irreversible loss caused by pressure and temperature reducing in cooling steam system；(3) the utility model using a variety of cooling steams into vapour,
The cooling effect of low pressure (LP) cylinder is improved, while realizing making full use of for energy；(4) the utility model combination steam power plant is provided with
The advantage of two units ensure that the reliability of cooling gas resources, improve turbine low pressure cylinder not into the safety of automotive row.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the present embodiment.
Fig. 2 is the structural schematic diagram that No.1 turbine low pressure cylinder is two-stage regenerative steam in the present embodiment.
Fig. 3 is the structural schematic diagram that No. two turbine low pressure cylinders are two-stage regenerative steam in the present embodiment.
Fig. 4 is the structural schematic diagram that No.1 turbine low pressure cylinder is three-level regenerative steam in the present embodiment.
Fig. 5 is the structural schematic diagram that No. two turbine low pressure cylinders are three-level regenerative steam in the present embodiment.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing 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, a kind of solidifying pumping back heating system based on two unit black soy sauce vapour, including No.1 cogeneration units, two
Number cogeneration units and cooling steam system.
No.1 cogeneration units include: No.1 Steam Turbine Through IP Admission 101, No.1 turbine low pressure cylinder 102, No.1 condensing
The steam drain of device 103, No.1 condensate pump 104 and No.1 heat regenerative system 11, No.1 Steam Turbine Through IP Admission 101 is connected to by No.1
Pipe 110 is connect with the air intake of No.1 turbine low pressure cylinder 102, and on No.1 communicating pipe 110 along steam flow direction according to
Secondary to be equipped with No.1 back pressure butterfly valve 120 and the solidifying butterfly valve 121 of No.1 pumping, No.1 Steam Turbine Through IP Admission 101 is connected with No.1 heating pumping
The steam drain of steam pipe 111, No.1 turbine low pressure cylinder 102 is connect with No.1 condenser 103, and No.1 condenser 103 and No.1 are solidifying
Bear water 104 connection of pump.
No. two cogeneration units include: the condensing of turbine low pressure cylinder 202, two of No. two Steam Turbine Through IP Admissions 201, two
The steam drain of 203, No. two condensate pumps 204 of device and No. two heat regenerative systems 12, No. two Steam Turbine Through IP Admissions 201 passes through No. two connections
Pipe 210 is connect with the air intake of No. two turbine low pressure cylinders 202, and is equipped with No. two on No. two communicating pipes 210 and is taken out solidifying butterfly valve
220, No. two Steam Turbine Through IP Admissions 201 are connected with No. two heating extraction steam pipes 211, the steam drain of No. two turbine low pressure cylinders 202 with
No. two condensers 203 connect, and No. two condensers 203 are connect with No. two condensate pumps 204.
Cooling steam system includes the first cooling steam pipe 310 and the second cooling steam pipe 410.
The first decompressor 301, the first desuperheat are sequentially installed with along steam flow direction on first cooling steam pipe 310
Device 302 and the first steam parameter measuring device 303；First decompressor 301 is provided with the first throttled steam bypass 311, and
The first gate valve is separately installed in steam inlet, steam (vapor) outlet and the first throttled steam bypass 311 of the first decompressor 301
322, the second gate valve 323 and third gate valve 324；First Desuperheating device 302 is provided with the first desuperheated system bypass 312, and the
Be separately installed in the steam inlet of one Desuperheating device 302, steam (vapor) outlet and the first desuperheated system bypass 312 the 4th gate valve 325,
5th gate valve 326 and the 6th gate valve 327.The steam extraction of the air intake and No. two turbine low pressure cylinders 202 of first cooling steam pipe 310
Mouthful connection, is sequentially installed with the first shut-off valve 320 and the along steam flow direction in the air intake of the first cooling steam pipe 310
The venthole of one regulating valve 321, the first cooling steam pipe 310 is connect with the air intake of No.1 turbine low pressure cylinder 102, first
The venthole of cooling steam pipe 310 is equipped with the second shut-off valve 328, the cooling water inlet and cooling water of the first Desuperheating device 302
Outlet is connected separately with the first cooling water inlet pipe 313 and the first cooling water outlet tube 314.
The second decompressor 401, the second desuperheat are sequentially installed with along steam flow direction on second cooling steam pipe 410
Device 402 and the second steam parameter measuring device 403；Second decompressor 401 is provided with the second throttled steam bypass 411, and
The 7th gate valve is separately installed in steam inlet, steam (vapor) outlet and the second throttled steam bypass 411 of the second decompressor 401
422, the 8th gate valve 423 and the 9th gate valve 424；Second Desuperheating device 402 is provided with the second desuperheated system bypass 412, and the
Be separately installed in the steam inlets of two Desuperheating devices 402, steam (vapor) outlet and the second desuperheated system bypass 412 the tenth gate valve 425,
11st gate valve 426 and the 12nd gate valve 427.The air intake of second cooling steam pipe 410 and No. two turbine low pressure cylinders 202
Extraction opening connection, is sequentially installed with third shut-off valve 420 along steam flow direction in the air intake of the second cooling steam pipe 410
It is connect with the venthole of the second regulating valve 421, the second cooling steam pipe 410 with the extraction opening of No.1 turbine low pressure cylinder 102,
The venthole of second cooling steam pipe 410 is equipped with the 4th shut-off valve 428, the cooling water inlet of the second Desuperheating device 402 and cold
But water out is connected separately with the second cooling water inlet pipe 413 and the second cooling water outlet tube 414.
First Desuperheating device 302 and the second Desuperheating device 402 are dividing wall type vapor-water heat exchanger, the first Desuperheating device 302
It can come from the condensed water, boiler replenishing water or low-temperature circulating water of steam power plant with the cooling water source of the second Desuperheating device 402.First steams
Vapour parameter measuring apparatus 303 and the second steam parameter measuring device 403 include flow measurement of steam instrument, bourdon gauge
With vapor (steam) temperature measuring instrument.No.1 back pressure butterfly valve 120 is the valve without mechanical position limitation, the fluid No leakage when valve closes entirely；One
Number taking out solidifying butterfly valve 121, two to take out solidifying butterfly valve 220 is the valve for having mechanical position limitation, and when valve closes entirely, fluid is still negotiable.
Referring to fig. 2, No.1 heat regenerative system 11 includes: No.1 level-one low-pressure heater 105 and No.1 second level low-pressure heater
106, the water inlet of No.1 level-one low-pressure heater 105 is connect with the water outlet of No.1 condensate pump 104, and No.1 level-one low pressure adds
The air intake of hot device 105 is connect by No.1 level-one extraction steam pipe 112 with the level-one extraction opening of No.1 turbine low pressure cylinder 102, and
13rd gate valve 122, the water inlet and No.1 of No.1 second level low-pressure heater 106 are installed on No.1 level-one extraction steam pipe 112
The water outlet of level-one low-pressure heater 105 connects, and the air intake of No.1 second level low-pressure heater 106 passes through No.1 second level extraction steam pipe
113 connect with the second level extraction opening of No.1 turbine low pressure cylinder 102, and are equipped with the 14th on No.1 second level extraction steam pipe 113
Gate valve 123.
Referring to Fig. 3, No. two heat regenerative systems 12 include: No. two level-one low-pressure heaters 205 and No. two second level low-pressure heaters
206, the water inlet of No. two level-one low-pressure heaters 205 is connect with the water outlet of No. two condensate pumps 204, and No. two level-one low pressure add
The air intake of hot device 205 is connect by No. two level-one extraction steam pipes 212 with the level-one extraction opening of No. two turbine low pressure cylinders 202, and two
The water inlet of number second level low-pressure heater 206 is connect with the water outlet of No. two level-one low-pressure heaters 205, and No. two second level low pressure add
The air intake of hot device 206 is connect by No. two second level extraction steam pipes 213 with the second level extraction opening of No. two turbine low pressure cylinders 202.
Referring to fig. 4, No.1 heat regenerative system 11 further includes No.1 three-level low-pressure heater 107, No.1 three-level low-pressure heater
107 water inlet is connect with the water outlet of No.1 second level low-pressure heater 106, the air intake of No.1 three-level low-pressure heater 107
It is connect by No.1 three-level extraction steam pipe 114 with the three-level extraction opening of No.1 turbine low pressure cylinder 102, and in No.1 three-level extraction steam pipe
15th gate valve 124 is installed on 114.
Referring to Fig. 5, No. two heat regenerative systems 12 further include No. two three-level low-pressure heaters 207, No. two three-level low-pressure heaters
207 water inlet is connect with the water outlet of No. two second level low-pressure heaters 206, the air intake of No. two three-level low-pressure heaters 207
It is connect by No. two three-level extraction steam pipes 214 with the three-level extraction opening of No. two turbine low pressure cylinders 202.
Referring to figure 1, figure 2 and figure 3, when the heat regenerative system of No.1 turbine low pressure cylinder 102 and No. two turbine low pressure cylinders 202
When being two-stage backheat, the second level extraction opening of the air intake of the first cooling steam pipe 310 and No. two turbine low pressure cylinders 202 connects
It connects；The level-one extraction opening or second level extraction opening of the air intake of second cooling steam pipe 410 and No. two turbine low pressure cylinders 202 connect
It connects, the venthole of the second cooling steam pipe 410 and the level-one extraction opening of No.1 turbine low pressure cylinder 102 or second level extraction opening connect
It connects.
Referring to Fig. 1, Fig. 4 and Fig. 5, when the heat regenerative system of No.1 turbine low pressure cylinder 102 and No. two turbine low pressure cylinders 202
When being three-level backheat, the second level extraction opening or three of the air intake of the first cooling steam pipe 310 and No. two turbine low pressure cylinders 202
Grade extraction opening connection；The level-one extraction opening of the air intake of second cooling steam pipe 410 and No. two turbine low pressure cylinders 202, second level
Extraction opening or the connection of three-level extraction opening, the venthole of the second cooling steam pipe 410 and the level-one of No.1 turbine low pressure cylinder 102 are taken out
Steam ports, second level extraction opening or the connection of three-level extraction opening.
A kind of adjusting method of the solidifying pumping back heating system based on two unit black soy sauce vapour as described above, adjusting method is such as
Under:
1. when No.1 cogeneration units are extraction for heat supply operating condition:
Standard-sized sheet No.1 back pressure butterfly valve 120, the aperture of the solidifying butterfly valve 121 of adjusting No.1 pumping, the one of No.1 Steam Turbine Through IP Admission 101
Part steam discharge continues to do work by No.1 communicating pipe 110 into No.1 turbine low pressure cylinder 102；No.1 Steam Turbine Through IP Admission 101
Another part steam discharge pass through the external heat supply of No.1 heating extraction steam pipe 111；At this point, closing the first shut-off valve 320, the second shut-off valve
328, third shut-off valve 420 and the 4th shut-off valve 428, cooling steam system do not put into operation.
2. when No.1 cogeneration units are back pressure supplying thermal condition:
It is complete to close No.1 back pressure butterfly valve 120 and No.1 takes out solidifying butterfly valve 121, the steam discharge of No.1 Steam Turbine Through IP Admission 101 no longer into
Enter the acting of No.1 turbine low pressure cylinder 102, but the steam discharge of No.1 Steam Turbine Through IP Admission 101 all passes through No.1 heating extraction steam pipe
111 external heat supplies；At this point, the first shut-off valve 320 of opening and the second shut-off valve 328, the first cooling steam pipe 310 first put into fortune
Row, second level steam extraction or three-level steam extraction from No. two turbine low pressure cylinders 202 enter No.1 vapour by the first cooling steam pipe 310
Turbine low pressure (LP) cylinder 102 cools down No.1 turbine low pressure cylinder 102；According to the cooling of No.1 turbine low pressure cylinder 102 whether
Sufficiently, to determine whether opening the second cooling steam pipe 410；When the temperature monitoring system of No.1 turbine low pressure cylinder 102 is shown
Temperature value when being more than safety value, the especially temperature monitoring value of the final stage of No.1 turbine low pressure cylinder 102 and second last stage blade
When more than safety value, opens third shut-off valve 420 and the 4th shut-off valve 428, the second cooling steam pipe 410 put into operation, come from
Level-one steam extraction, second level steam extraction or the three-level steam extraction of No. two turbine low pressure cylinders 202 enter No.1 by the second cooling steam pipe 410
Turbine low pressure cylinder 102 is fully cooled the latter half of No.1 turbine low pressure cylinder 102；When No.1 steam turbine low-pressure
When the temperature value that the temperature monitoring system of cylinder 102 is shown is within the scope of safety value, third shut-off valve 420 and the 4th cut-off are closed
Valve 428, the second cooling steam pipe 410 are in close state.According to the first steam parameter measuring device 303 and the second steam parameter
The measured value of measuring device 403, first is that the aperture to judge the first regulating valve 321 and the second regulating valve 421, to adjust first
Cooling steam flow in cooling steam pipe 310 and the second cooling steam pipe 410；Second is that judge 301 He of the first decompressor
Whether the second decompressor 401 puts into operation, to guarantee that all cooling steam pressure parameters are met the requirements；Third is that judge
Whether the first Desuperheating device 302 and the second Desuperheating device 402 put into operation, to guarantee that all cooling steam temperature parameters are full
Foot requires.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
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 scope 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 in a similar manner, 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 (9)
1. a kind of solidifying pumping based on two unit black soy sauce vapour carries on the back heating system, including No.1 cogeneration units, No. two cogenerations of heat and power
Unit and cooling steam system；It is characterized by:
The No.1 cogeneration units include No.1 Steam Turbine Through IP Admission (101), No.1 turbine low pressure cylinder (102), No.1
The steam drain of condenser (103) and No.1 condensate pump (104), the No.1 Steam Turbine Through IP Admission (101) is connected to by No.1
Pipe (110) is connect with the air intake of No.1 turbine low pressure cylinder (102), and is flowed on No.1 communicating pipe (110) along steam
Direction is sequentially installed with No.1 back pressure butterfly valve (120) and No.1 takes out solidifying butterfly valve (121), the No.1 Steam Turbine Through IP Admission (101)
It is connected with No.1 heating extraction steam pipe (111), steam drain and No.1 condenser (103) of the No.1 turbine low pressure cylinder (102)
Connection, the No.1 condenser (103) connect with No.1 condensate pump (104)；The No.1 cogeneration units further include one
Number heat regenerative system (11), the No.1 heat regenerative system (11) includes No.1 level-one low-pressure heater (105) and No.1 second level low pressure
Heater (106)；The water inlet of the No.1 level-one low-pressure heater (105) and the water outlet of No.1 condensate pump (104) connect
It connects, the air intake of the No.1 level-one low-pressure heater (105) passes through No.1 level-one extraction steam pipe (112) and No.1 steam turbine low-pressure
The level-one extraction opening of cylinder (102) connects, and the 13rd gate valve (122) is equipped on No.1 level-one extraction steam pipe (112), and described one
The water inlet of number second level low-pressure heater (106) is connect with the water outlet of No.1 level-one low-pressure heater (105), the No.1 two
The air intake of grade low-pressure heater (106) passes through the second level of No.1 second level extraction steam pipe (113) and No.1 turbine low pressure cylinder (102)
Extraction opening connection, and the 14th gate valve (123) is installed on No.1 second level extraction steam pipe (113)；
No. two cogeneration units include No. two Steam Turbine Through IP Admissions (201), No. two turbine low pressure cylinders (202), No. two
The steam drain of condenser (203) and No. two condensate pumps (204), No. two Steam Turbine Through IP Admissions (201) passes through No. two connections
Pipe (210) is connect with the air intake of No. two turbine low pressure cylinders (202), and No. two pumpings are equipped on No. two communicating pipes (210)
Solidifying butterfly valve (220), No. two Steam Turbine Through IP Admissions (201) are connected with No. two heating extraction steam pipes (211), No. two steam turbines
The steam drain of low pressure (LP) cylinder (202) is connect with No. two condensers (203), No. two condensers (203) and No. two condensate pumps
(204) it connects；No. two cogeneration units further include No. two heat regenerative systems (12), and No. two heat regenerative systems (12) include
No. two level-one low-pressure heaters (205) and No. two second level low-pressure heaters (206), No. two level-one low-pressure heaters (205)
Water inlet connect with the water outlet of No. two condensate pumps (204), the air intakes of No. two level-one low-pressure heaters (205) is logical
It crosses No. two level-one extraction steam pipes (212) to connect with the level-one extraction opening of No. two turbine low pressure cylinders (202), No. two second level low pressure
The water inlet of heater (206) is connect with the water outlet of No. two level-one low-pressure heaters (205), No. two second level low-pressure heatings
The air intake of device (206) is connected by the second level extraction opening of No. two second level extraction steam pipes (213) and No. two turbine low pressure cylinders (202)
It connects；
The cooling steam system includes the first cooling steam pipe (310) and the second cooling steam pipe (410)；Described first is cooling
On steam pipe (310) along steam flow direction be sequentially installed with the first decompressor (301), the first Desuperheating device (302) and
First steam parameter measuring device (303), the air intake and No. two turbine low pressure cylinders of the first cooling steam pipe (310)
(202) extraction opening connection, is sequentially installed with first along steam flow direction in the air intake of the first cooling steam pipe (310)
Shut-off valve (320) and the first regulating valve (321), the venthole and No.1 steam turbine low-pressure of the first cooling steam pipe (310)
The air intake of cylinder (102) connects, and is equipped with the second shut-off valve (328) in the venthole of the first cooling steam pipe (310), and described the
The cooling water inlet and cooling water outlet of one Desuperheating device (302) are connected separately with the first cooling water inlet pipe (313) and first cold
But water outlet pipe (314)；The second decompressor is sequentially installed with along steam flow direction on the second cooling steam pipe (410)
(401), the second Desuperheating device (402) and the second steam parameter measuring device (403), the second cooling steam pipe (410)
Air intake is connect with the extraction opening of No. two turbine low pressure cylinders (202), the second cooling steam pipe (410) air intake along steaming
Vapour flow direction is sequentially installed with third shut-off valve (420) and the second regulating valve (421), the second cooling steam pipe (410)
Venthole connect with the extraction opening of No.1 turbine low pressure cylinder (102), the second cooling steam pipe (410) venthole install
There is the 4th shut-off valve (428), the cooling water inlet and cooling water outlet of second Desuperheating device (402) are connected separately with second
Cooling water inlet pipe (413) and the second cooling water outlet tube (414).
2. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described first
Decompressor (301) is provided with the first throttled steam bypass (311), and in the steam inlet of the first decompressor (301), steam
The first gate valve (322), the second gate valve (323) and third gate valve are separately installed in outlet and the first throttled steam bypass (311)
(324)；Second decompressor (401) is provided with the second throttled steam bypass (411), and in the second decompressor (401)
Steam inlet, steam (vapor) outlet and the second throttled steam bypass (411) on be separately installed with the 7th gate valve (422), the 8th gate valve
(423) and the 9th gate valve (424).
3. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described one subtracts
Warm device (302) is provided with the first desuperheated system bypass (312), and goes out in the steam inlet of the first Desuperheating device (302), steam
The 4th gate valve (325), the 5th gate valve (326) and the 6th gate valve are separately installed in mouth and the first desuperheated system bypass (312)
(327)；Second Desuperheating device (402) is provided with the second desuperheated system bypass (412), and in the second Desuperheating device (402)
Steam inlet, steam (vapor) outlet and the second desuperheated system bypass (412) on be separately installed with the tenth gate valve (425), the 11st lock
Valve (426) and the 12nd gate valve (427).
4. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described first
Desuperheating device (302) and the second Desuperheating device (402) are dividing wall type vapor-water heat exchanger, first Desuperheating device (302) and
Condensed water, boiler replenishing water or low-temperature circulating water of the cooling water source of second Desuperheating device (402) from steam power plant.
5. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described first
Steam parameter measuring device (303) and the second steam parameter measuring device (403) include flow measurement of steam instrument, steam pressure
Measuring instrument and vapor (steam) temperature measuring instrument.
6. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: the No.1
Heat regenerative system (11) further includes No.1 three-level low-pressure heater (107), the water inlet of the No.1 three-level low-pressure heater (107)
It is connect with the water outlet of No.1 second level low-pressure heater (106), the air intake of the No.1 three-level low-pressure heater (107) passes through
No.1 three-level extraction steam pipe (114) is connect with the three-level extraction opening of No.1 turbine low pressure cylinder (102), and in No.1 three-level extraction steam pipe
(114) the 15th gate valve (124) is installed on；No. two heat regenerative systems (12) further include No. two three-level low-pressure heaters
(207), the water inlet of No. two three-level low-pressure heaters (207) and the water outlet of No. two second level low-pressure heaters (206) connect
It connects, the air intake of No. two three-level low-pressure heaters (207) passes through No. two three-level extraction steam pipes (214) and No. two steam turbine low-pressures
The three-level extraction opening of cylinder (202) connects.
7. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: the No.1
Back pressure butterfly valve (120) is the valve without mechanical position limitation；No.1 takes out solidifying butterfly valve (121) and No. two are taken out solidifying butterfly valve (220) to there is machinery
The valve of limit.
8. the solidifying pumping according to claim 1 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described first
The air intake of cooling steam pipe (310) is connect with the second level extraction opening of No. two turbine low pressure cylinders (202)；Described second cooling steaming
The air intake of steam pipe (410) is connect with the level-one extraction opening of No. two turbine low pressure cylinders (202) or second level extraction opening, and described second
The venthole of cooling steam pipe (410) is connect with the level-one extraction opening of No.1 turbine low pressure cylinder (102) or second level extraction opening.
9. the solidifying pumping according to claim 1 or 6 based on two unit black soy sauce vapour carries on the back heating system, it is characterised in that: described
The second level extraction opening or three-level extraction opening of the air intake of first cooling steam pipe (310) and No. two turbine low pressure cylinders (202) connect
It connects；The air intake and the level-one extraction opening of No. two turbine low pressure cylinders (202), second level of the second cooling steam pipe (410) are taken out
Steam ports or the connection of three-level extraction opening, venthole and No.1 turbine low pressure cylinder (102) of the second cooling steam pipe (410)
Level-one extraction opening, second level extraction opening or the connection of three-level extraction opening.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820287947.9U CN208184797U (en) | 2018-03-01 | 2018-03-01 | A kind of solidifying pumping back heating system based on two unit black soy sauce vapour |
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| CN201820287947.9U CN208184797U (en) | 2018-03-01 | 2018-03-01 | A kind of solidifying pumping back heating system based on two unit black soy sauce vapour |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343480A (en) * | 2018-03-01 | 2018-07-31 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back of the body heating system and adjusting method based on two unit black soy sauce vapour |
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2018
- 2018-03-01 CN CN201820287947.9U patent/CN208184797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343480A (en) * | 2018-03-01 | 2018-07-31 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back of the body heating system and adjusting method based on two unit black soy sauce vapour |
| CN108343480B (en) * | 2018-03-01 | 2023-05-09 | 华电电力科学研究院有限公司 | Condensing back-pumping heat supply system based on double steam extraction of two units and adjusting method |
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