CN206190339U - Two branch road heating system of cogeneration steam turbine - Google Patents
Two branch road heating system of cogeneration steam turbine Download PDFInfo
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- CN206190339U CN206190339U CN201621087466.0U CN201621087466U CN206190339U CN 206190339 U CN206190339 U CN 206190339U CN 201621087466 U CN201621087466 U CN 201621087466U CN 206190339 U CN206190339 U CN 206190339U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims description 102
- 230000001105 regulatory effect Effects 0.000 claims description 55
- 238000000605 extraction Methods 0.000 claims description 23
- 238000003303 reheating Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 239000000284 extract Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 175
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000007921 spray Substances 0.000 description 8
- 239000002918 waste heat Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model relates to a steam turbine technical field especially relates to a two branch road heating system of cogeneration steam turbine, including high, medium and low pressure jar and re -heater, the steam drain of high pressure cylinder is equipped with reheat steam admission valves through the entry intercommunication of cold reheat steam pipeline with the re -heater, the export of re -heater through the steam inlet intercommunication of hot reheat steam pipeline with the intermediate pressure cylinder on the steam inlet of intermediate pressure cylinder, be connected with first cold section parallelly connected each other branch road and the cold section of the second branch road that draws gas that draws gas on cold reheat steam pipeline, first cold section is drawn gas the branch road and is led to first heat supply network, is equipped with the cold section first quick closing valve governing valve that draws gas on a way is drawn gas to first cold section, cold section branch road that draws gas of second leads to the second heat supply network, is equipped with cold section quick closing valve governing valve that draws gas of second on a way is drawn gas to the cold section of second. Draw gas branch roads through two cold sections and can extract and obtain the steam that the parameter is different, lead to respectively and draw gas the demand parameter in rather than two heat supply networks of assorted, realized simultaneously to the heat supply respectively of two heat supply networks.
Description
Technical field
The utility model is related to steam turbine technology field, more particularly to a kind of double branch road heat supply systems of cogeneration turbine
System.
Background technology
Steam turbine is one of crucial power-equipment in power plant construction, is to convert thermal energy into mechanical energy and then be converted into electricity
The energy conversion device of energy.High temperature, the high steam produced by boiler, by steam turbine, heat energy and pressure potential are changed
Into the mechanical energy of steam turbine, the acting of turbine rotor output shaft is driven, the mechanical energy is passed to by turbine rotor output shaft
Generator, so as to convert mechanical energy into electric energy.
Gas-steam Combined Cycle meant gas turbine as preposition turbine, and gas turbine is reclaimed with waste heat boiler
Exhaust heat, some grades of initial steams of output injection steam turbines, steam expansion work and exports electric energy in steam turbine.Combustion gas-
Steam Combined Cycle is the gas turbine with average endothermic temperature higher and has the steam turbine compared with harmonic(-)mean exothermic temperature
Combine, the high-temperature tail gas of gas turbine is entered waste heat boiler and produce steam, and steam is continued acting in steam turbine
Generate electricity, reach the purpose maximized favourable factors and minimized unfavourable ones, mutually make up, make the heat energy utilization level of whole combined cycle has bright compared with simple cycle
It is aobvious to improve.The net efficiency of combined cycle generation is up to 48%~62%.
The combined cycle system conventional at present double pressures widely used just like E grades of circulating power station, without reheat system and F
Three pressures, reheat system that level circulating power station is used.The former generates electricity net efficiency 50% or so, and the latter's generating net efficiency exists
More than 58%.Additionally, the also H more than 60% grades of combined cycle system of generating efficiency.Thermoelectricity (cold) coproduction, refers in steamer
Extracting a part of steam at the through-flow suitable location within of machine out is used for factory steam, and original intention is to realize the rational gradient of the energy
Utilize.The combined cycle efficiency of cogeneration of heat and power can reach more than 70%.
The existing combined heat and power circulatory system is provided only with extraction line all the way to be used to extract steam and be sent to heat supply network heat supply, because
This is only a heat supply network and provides heat energy, and can not be simultaneously the different heat supply network heat supply of two demand parameters that draw gas.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of thermoelectricity that can distinguish heat supply for two heat supply networks simultaneously
The double branch road heating systems of alliance steam turbine, to overcome the drawbacks described above of prior art.
In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that：A kind of cogeneration turbine is double
Branch road heating system, including high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and reheater, the steam drain of high pressure cylinder is by cold reheated steam pipe
Road is connected with the entrance of reheater, and the outlet of reheater is connected by hot reheat steam line with the air intake of intermediate pressure cylinder, in
The air intake of cylinder pressure is provided with reheated steam inlet valve group；Cold section of parallel with one another first is connected with cold reheaing steam pipe
Draw gas branch road and secondary cooling zone draws gas branch road, first cold section of branch road that draws gas leads to the first heat supply network, drawn gas on branch road at first cold section
It is provided with first cold section of quick closing valve regulating valve of drawing gas；The secondary cooling zone branch road that draws gas leads to the second heat supply network, is drawn gas on branch road in secondary cooling zone
Secondary cooling zone is provided with to draw gas quick closing valve regulating valve.
Preferably, the downstream of quick closing valve regulating valve of being drawn gas at first cold section on first cold section of branch road that draws gas is provided with first cold section and subtracts
Warm decompressor.
Preferably, quick closing valve regulating valve string is passed through in first cold section of downstream of reducing-and-cooling plant on first cold section of branch road that draws gas
It is associated with subordinate's reducing-and-cooling plant.
Preferably, subordinate's reducing-and-cooling plant is provided between multiple, and the adjacent subordinate's reducing-and-cooling plant of each two
It is provided with a quick closing valve regulating valve.
Preferably, the downstream of quick closing valve regulating valve of being drawn gas at first cold section on first cold section of branch road that draws gas is provided with back pressure type steam turbine
Machine.
Preferably, the secondary cooling zone branch road that draws gas is connected with the first heat supply network.
Preferably, secondary cooling zone draws gas and be provided with secondary cooling zone and subtract in the draw gas downstream of quick closing valve regulating valve of secondary cooling zone on branch road
Warm decompressor.
Preferably, hot arc is communicated between hot reheat steam line and secondary cooling zone draw gas branch road to draw gas branch road, and heat
The section branch road that draws gas draws gas the downstream of quick closing valve regulating valve and the secondary cooling zone branch road that draws gas is connected in secondary cooling zone；Drawn gas branch road in hot arc
Hot arc is provided with to draw gas quick closing valve regulating valve.
Preferably, hot arc to draw gas and be provided with hot arc reducing-and-cooling plant in the draw gas downstream of quick closing valve regulating valve of hot arc on branch road.
Preferably, secondary cooling zone to draw gas and be provided with steam header in the draw gas downstream of quick closing valve regulating valve of secondary cooling zone on branch road,
The hot arc branch road that draws gas is connected with steam header.
Preferably, hot arc draws gas and be provided with hot arc and draw gas shut-off valve in the draw gas upstream of quick closing valve regulating valve of hot arc on branch road.
Preferably, be provided with extraction line on cold reheaing steam pipe, extraction line connect first cold section draw gas branch road and
Secondary cooling zone is drawn gas branch road, and the cold section of shut-off valve that draws gas is provided with extraction line.
Compared with prior art, the utility model has significant progressive：Using height, row draws gas, and is provided with two parallel connections
The cold section of branch road that draws gas, the steam for obtaining different parameters can be extracted by the two cold section branch road that draws gas, and leads to the need that draw gas respectively
Ask in two heat supply networks that parameter matches with it, so that it is simultaneously two heat supply network difference heat supplies to realize, different heat supply networks can be met
Heat demand, be obviously improved flexibility and the adaptability of cogeneration system, reduce the phenomenon of high-quality energy waste.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the double branch road heating systems of cogeneration turbine of the utility model embodiment.
Fig. 2 is another structural representation of the double branch road heating systems of cogeneration turbine of the utility model embodiment
Figure.
In figure：
HP, high pressure cylinder IP, intermediate pressure cylinder LP, low pressure (LP) cylinder
2nd, reheater 3, the first heat supply network 4, condenser
5th, first cold section of reducing-and-cooling plant 6, high pressure main steam inlet valve group 6a, high pressure main stop valve
6b, septum valve 7, reheated steam inlet valve group 7a, reheating main steam valve
7b, reheat control valve 8, low pressure filling valve group 8a, low pressure stop valve
8b, low pressure modulating valve 9,10, first cold section of high exhaust check valve are drawn gas quick closing valve regulating valve
11st, hot arc draws gas quick closing valve regulating valve 12, high pressure bypass valve 13, the first spray water control valve
14th, intermediate pressure by-pass valve 15, the second spray water control valve 16, low voltage bypass valve
17th, the 3rd spray water control valve 18, row's ventilation valve 19 high, the cold section of shut-off valve that draws gas
20th, hot arc draws gas shut-off valve 21, row's shut-off valve 22 high, hot arc reducing-and-cooling plant
23rd, the second heat supply network 24, secondary cooling zone draws gas quick closing valve regulating valve 25, steam header
26th, subordinate's reducing-and-cooling plant 27, quick closing valve regulating valve 28, secondary cooling zone reducing-and-cooling plant
29th, back pressure turbine
100th, 101, first cold section of cold reheaing steam pipe draws gas branch road 102, air pipeline
103rd, secondary cooling zone draws gas branch road 104, extraction line 200, hot reheat steam line
201st, hot arc draws gas branch road 202, intermediate pressure by-pass 300, High Pressure Steam Host Piping
301st, high pressure turbine by 400, low pressure gas filling pipeline 401, low voltage bypass
500th, the first water pipeline 600, the second water pipeline 700, the 3rd water pipeline
Specific embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.These implementation methods are only
For illustrating the utility model, and it is not limitation of the utility model.
In description of the present utility model, it is necessary to explanation, term " on ", D score, "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom " " interior ", " outward " be based on orientation shown in the drawings or
Position relationship, is for only for ease of description the utility model and simplifies description, rather than the device or unit that indicate or imply meaning
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
As depicted in figs. 1 and 2, a kind of embodiment of the double branch road heating systems of cogeneration turbine of the present utility model.
The double branch road heating systems of the cogeneration turbine of the present embodiment include high pressure cylinder HP, intermediate pressure cylinder IP, low pressure (LP) cylinder LP, reheater 2,
Condenser 4, cold reheaing steam pipe 100, hot reheat steam line 200, High Pressure Steam Host Piping 300 and low pressure gas filling pipeline
400.In the present embodiment, high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder LP can individually divide cylinder, intermediate pressure cylinder IP using high pressure cylinder HP
With the structure that low pressure (LP) cylinder LP closes cylinder, it would however also be possible to employ high pressure cylinder HP and intermediate pressure cylinder IP closes the structure that cylinder, low pressure (LP) cylinder LP individually divide cylinder
Or high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder LP all individually divide the structure of cylinder.The cogeneration turbine of the present embodiment is double
Especially suitable three pressure of branch road heating system, reheating combined cycle thermoelectric co-feeding system, below with three pressures, reheating combined cycle thermoelectric
As a example by co-feeding system.In three pressures, reheating combined cycle thermoelectric co-feeding system, the steam produced in waste heat boiler includes three strands：
High pressure main steam, reheat heat steam and low-pressure steam, in each leading into high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder LP.Reheater 2
Reheated for the gaseous mixture of the middle pressure steam in the cold reheated steam and waste heat boiler discharged to high pressure cylinder HP and produced
Reheat heat steam.
Specifically, in the present embodiment, the air intake of high pressure cylinder HP is connected with High Pressure Steam Host Piping 300, by high pressure master
Jet chimney 300 in high pressure cylinder HP to being passed through high pressure main steam.High pressure main steam is provided with the air intake of high pressure cylinder HP and enters vapour
Valve group 6, the throttle flow for controlling and adjusting high pressure main steam.High pressure main steam inlet valve group 6 include high pressure main stop valve 6a and
Septum valve 6b, high pressure main stop valve 6a and septum valve 6b connect.The steam drain of high pressure cylinder HP is by cold reheated steam pipe
Road 100 is connected with the entrance of reheater 2, and row's steam (i.e. cold reheated steam) high of high pressure cylinder HP steam drains discharge is steamed through cold reheating
Steam pipe road 100 is reheated in being passed through reheater 2.High exhaust check valve 9 is provided with cold reheaing steam pipe 100, for preventing
Only cold reheated steam is flow backwards into high pressure cylinder HP.
The outlet of reheater 2 is connected by hot reheat steam line 200 with the air intake of intermediate pressure cylinder IP, is produced in reheater 2
Raw reheat heat steam is passed through in intermediate pressure cylinder IP through hot reheat steam line 200.Reheating is provided with the air intake of intermediate pressure cylinder IP
Steam inlet valve group 7, the throttle flow for controlling and adjusting reheat heat steam.Reheated steam inlet valve group 7 includes the main vapour of reheating
Valve 7a and reheat control valve 7b, reheating main steam valve 7a and reheat control valve 7b connect.
Low pressure gas filling pipeline 400 is connected with the air intake of low pressure (LP) cylinder LP, from low pressure gas filling pipeline 400 in low pressure (LP) cylinder LP
It is passed through low-pressure steam.Low pressure filling valve group 8 is provided with the air intake of low pressure (LP) cylinder LP, for controlling and adjusting entering for low-pressure steam
Vapour amount.Low pressure filling valve group 8 is gone here and there including low pressure stop valve 8a and low pressure modulating valve 8b, low pressure stop valve 8a and low pressure modulating valve 8b
Connection.Preferably, the upstream of low pressure filling valve group 8 can also set low pressure filling regulation valve group on low pressure gas filling pipeline 400
(not shown), in big flow, row high draws gas under operating mode, and the regulating valve in low pressure filling regulation valve group can control low pressure to mend
The pressure in front of the door of steam valve group 8.
In the present embodiment, cold section of parallel with one another first is connected with cold reheaing steam pipe 100 and is drawn gas the He of branch road 101
Secondary cooling zone draws gas branch road 103.First cold section of branch road 101 that draws gas leads to the first heat supply network 3, for extracting cold reheaing steam pipe
In the cold reheated steam in part in 100, and cold reheated steam the first heat supply network 3 of feeding that will be extracted heat is provided with for the first heat supply network 3
Amount.First cold section of quick closing valve regulating valve 10 of drawing gas is provided with drawing gas branch road 101 at first cold section.Secondary cooling zone draw gas branch road 103 lead to
To the second heat supply network 23, for extracting the cold reheated steam in part in cold reheaing steam pipe 100, and the cold reheated steam that will be extracted
Send into the heat supply of the second heat supply network 23.Secondary cooling zone is provided with secondary cooling zone draws gas branch road 103 to draw gas quick closing valve regulating valve 24.
When the temperature parameter of the first heat supply network 3 and the demand steam of the second heat supply network 23 is suitable with height row's vapor (steam) temperature, first
In the case of the amount of drawing gas of the demand of 3 and second heat supply network of heat supply network 23 is less, first cold section is drawn gas branch road 101 and secondary cooling zone draws gas branch
Steam flow in road 103 is smaller, draws gas quick closing valve regulating valve 10 by first cold section and secondary cooling zone draws gas quick closing valve regulating valve 24
The regulation of aperture size is to be capable of achieving first cold section to draw gas branch road 101 and secondary cooling zone to draw gas and extract steam pressure in branch road 103
Regulation, so as to obtain the steam of the demand pressure match parameters with the first heat supply network 3 and the second heat supply network 23, to be respectively fed to
One heat supply network 3 and the heat supply of the second heat supply network 23.
In order to meet the first heat supply network 3 its demand steam temperature parameter and height row vapor (steam) temperature not quite or demand is taken out
Vapour amount increase when demand of drawing gas, it is preferable that as shown in figure 1, on branch road 101 can be drawn gas at first cold section first cold section draw gas
The downstream of quick closing valve regulating valve 10 sets first cold section of reducing-and-cooling plant 5, the cold reheating extracted in first cold section of branch road 101 that draws gas
Steam obtains temperature and pressure after being processed through first cold section of pressure and temperature reducing of reducing-and-cooling plant 5 joins with the demand of the first heat supply network 3
The steam that number matches, sends into the heat supply of the first heat supply network 3.The need for according to actual heat supply, in first cold section of reducing-and-cooling plant 5
Downstream can also be subtracted by one or more subordinate's reducing-and-cooling plant 26 of the series connection of quick closing valve regulating valve 27 per two neighboring subordinate
A quick closing valve regulating valve 27 is respectively connected between warm decompressor 26.Steam in first cold section of reducing-and-cooling plant 5 is through subordinate
After the further pressure and temperature reducing of reducing-and-cooling plant 26, the heat supply network heat supply that pressure demand is lower can be gone.As shown in Fig. 2 the present embodiment
First cold section of downstream of quick closing valve regulating valve 10 of drawing gas sets a back pressure turbine on branch road 101 can also be drawn gas at first cold section
29, the steam drain of back pressure turbine 29 is connected with the first heat supply network 3.The back pressure of back pressure turbine 29 can be set to the first heat supply network 3
Heat demand pressure, provide the steam matched with its demand parameter so as to be embodied as the first heat supply network 3, energy damage can be reduced
Lose, it is to avoid high-quality energy waste.Preferably, the secondary cooling zone branch road 103 that draws gas can also be connected with the first heat supply network 3, in the back of the body
When pressure type steam turbine 29 can not meet the heat demand of the first heat supply network 3, supplied to the first heat supply network 3 from the secondary cooling zone branch road 103 that draws gas
Heat.
In order to meet the second heat supply network 23 its demand steam temperature parameter and row's vapor (steam) temperature high not quite or demand
Demand of the drawing gas when amount of drawing gas increases, the present embodiment connects between hot reheat steam line 200 and secondary cooling zone draw gas branch road 103
It is connected with hot arc to draw gas branch road 201, hot arc draws gas branch road 201 positioned at the upstream of reheated steam inlet valve group 7, and hot arc draws gas branch road
201 draw gas the downstream of quick closing valve regulating valve 24 and the secondary cooling zone branch road 103 that draws gas is connected in secondary cooling zone.Drawn gas branch road in hot arc
201 are provided with hot arc draws gas quick closing valve regulating valve 11.Hot arc draws gas branch road 201 for the portion that extracts in hot reheat steam line 200
Point reheat heat steam, and the reheat heat steam of extraction and secondary cooling zone are drawn gas after the cold reheated steam that branch road 103 extracts mixes
The heat supply of the second heat supply network 23 is sent into, total extraction flow can be increased and be lifted into cold in secondary cooling zone reducing-and-cooling plant 28
The temperature of reheated steam, it is to avoid secondary cooling zone draw gas branch road 103 extraction cold reheated steam flow and temperature it is relatively low and can not
Meet the demand of actually drawing gas of the second heat supply network 23 so that the actual demand of the flow and temperature of the steam of extraction and the second heat supply network 23
Match.
Preferably, hot arc to draw gas and be provided with hot arc pressure and temperature reducing in the draw gas downstream of quick closing valve regulating valve 11 of hot arc on branch road 201
Device 22, hot arc draw gas branch road 201 extraction reheat heat steam through the pressure and temperature reducing of hot arc reducing-and-cooling plant 22 process after again with
Secondary cooling zone draw gas branch road 103 extraction cold reheated steam mixing.Further, it is possible on secondary cooling zone draws gas branch road 103
The draw gas downstream of quick closing valve regulating valve 24 of secondary cooling zone sets a steam header 25, and the hot arc branch road 201 that draws gas is connected with steam header 25,
The draws gas branch road 103 that drawn gas through the steam after the pressure and temperature reducing of hot arc reducing-and-cooling plant 22 and secondary cooling zone in branch road 201 of hot arc is taken out
The cold reheated steam for taking mixing in steam header 25, is then fed into the heat supply of the second heat supply network 23.It is highly preferred that can be cold second
Section the draw gas downstream of quick closing valve regulating valve 24 of secondary cooling zone on branch road 103 of drawing gas sets secondary cooling zone reducing-and-cooling plant 28, and the
Secondary cooling zone reducing-and-cooling plant 28 is located at the upstream of steam header 25, and the secondary cooling zone cold reheating extracted in branch road 103 of drawing gas is steamed
Vapour enters steam header 25 after being processed through the pressure and temperature reducing of secondary cooling zone reducing-and-cooling plant 28, is drawn gas with hot arc and pass through in branch road 201
Steam after the pressure and temperature reducing of hot arc reducing-and-cooling plant 22, obtain temperature and pressure with the demand parameter phase of the second heat supply network 23
The steam of matching, sends into the heat supply of the second heat supply network 23.
In the present embodiment, first cold section of quick closing valve regulating valve 10 of drawing gas is for controlling and adjusting first cold section of branch road that draws gas
Extract and send into the flow of the cold reheated steam of the first heat supply network 3 in 101, secondary cooling zone draw gas quick closing valve regulating valve 24 for control with
Adjust secondary cooling zone to draw gas the flow of the cold reheated steam that the second heat supply network 23 is extracted and sent into branch road 103, hot arc draws gas quick closing valve
Regulating valve 11 be used for control and adjust hot arc draw gas branch road 201 extraction reheat heat steam flow.Drawn gas by first cold section
Quick closing valve regulating valve 10, secondary cooling zone quick closing valve regulating valve 24, hot arc of drawing gas is drawn gas quick closing valve regulating valve 11 and reheated steam inlet valve group 7
In reheat control valve 7b cooperate, can draw gas branch road 101 to first cold section and secondary cooling zone draws gas branch road 103 and cold reheating
The heat that cold reheated steam assignment of traffic in jet chimney 100, hot arc draw gas in branch road 201 and hot reheat steam line 200 is again
Vapours assignment of traffic is adjusted and controls, and realizes adjustable steam extraction, improves the heat capacity of turbine system.It is cold by first
Section quick closing valve regulating valve 10, secondary cooling zone of drawing gas draws gas quick closing valve regulating valve 24 and hot arc draws gas the turning off or on of quick closing valve regulating valve 11
Then may be selected simultaneously to the first heat supply network 3 and the heat supply of the second heat supply network 23 or only to one of heat supply.
The present embodiment simultaneously to the first heat supply network 3 and the second 23 heat supply of heat supply network when parameter of drawing gas can be illustrated with declared working condition
It is bright as follows：It is row's steam high of 167.25t/h that first cold section of branch road 101 that draws gas extracts flow from cold reheaing steam pipe 100,
Wherein there is row's steam high of 116.5t/h flows to enter first cold section of pressure and temperature reducing through first cold section of quick closing valve regulating valve 10 of drawing gas to fill
Put in 5, it is the lower temperature steam of 120t/h, the heat of feeding first that flow is obtained after being processed through first cold section of reducing-and-cooling plant 5
The heat supply of net 3；Also row's steam high of 50.75t/h flows is adjusted through the secondary cooling zone that secondary cooling zone draws gas on branch road 103 quick closing valve that draws gas
Section valve 24 and secondary cooling zone reducing-and-cooling plant 28 enter in steam header 25.Hot arc draws gas branch road 201 from reheat heat steam pipe
It is the reheat heat steam of 9.25t/h that flow is extracted in road 200, and hot arc reducing-and-cooling plant 22 need not be opened under declared working condition, heat
The reheat heat steam that section is drawn gas in branch road 201 enters in steam header 25 through hot arc quick closing valve regulating valve 11 of drawing gas, cold with through second
Section is drawn gas row's steam high that branch road 103 enters in steam header 25, and it is the higher temperature steam of 60t/h to obtain flow, is sent
Enter the heat supply of the second heat supply network 23.When the steam consumption that the second heat supply network 23 needs is more than rated heating capacity, hot arc pressure and temperature reducing can be opened
Device 22, increases the hot arc amount of drawing gas, and mixes in steam header 25 and reaches with draw gas row's steam high of the extraction of branch road 103 of secondary cooling zone
The second heat supply network 23 is sent into after to required parameter and flow.
Preferably, the present embodiment is provided with extraction line 104 on cold reheaing steam pipe 100, the connection of extraction line 104 the
One cold section is drawn gas branch road 101 and secondary cooling zone draws gas branch road 103, and the cold section of shut-off valve 19 that draws gas is provided with extraction line 104.
Under supplying thermal condition, the cold section of shut-off valve 19 that draws gas is in normally open, and first cold section is drawn gas branch road 101 and secondary cooling zone draws gas branch road
103 normal works.If now the first heat supply network 3 or the second heat supply network 23 break down, can be cut by closing the cold section of shut-off valve 19 that draws gas
Disconnected first cold section is drawn gas branch road 101 and secondary cooling zone draws gas the circulation status of branch road 103, disconnect cold reheaing steam pipe 100 with
The connection of the first heat supply network 3 and the second heat supply network 23, so as to avoid because of the first heat supply network 3 or the fault impact turbine system of the second heat supply network 23
Run and cause compressor emergency shutdown, set grid-connection safe and stable operation is played a protective role.Under non-supplying thermal condition, due to first
Cold section is drawn gas quick closing valve regulating valve 10 and secondary cooling zone quick closing valve regulating valve 24 of drawing gas there may be and be not closed completely close problem and easy
Produce cold reheated steam to leak, now by closing the cold section of shut-off valve 19 that draws gas, ensure that first cold section of branch road 101 that draws gas
Closed tightly with the secondary cooling zone branch road 103 that draws gas, it is to avoid cold reheated steam leakage occurs and wastes.
Further, hot arc is additionally provided with hot arc draws gas branch road 201 to draw gas shut-off valve 20, the hot arc shut-off valve 20 that draws gas is located at
Hot arc draws gas the upstream of quick closing valve regulating valve 11.When hot arc draw gas branch road 201 also assist in heat supply when, with the cold section of phase of shut-off valve 19 of drawing gas
With ground, the hot arc shut-off valve 20 that draws gas is in normally open, and hot arc draws gas the normal work of branch road 201.If now the second heat supply network 23 is sent out
Raw failure, can cut off hot arc and draw gas the circulation status of branch road 201 by closing the hot arc shut-off valve 20 that draws gas, and disconnect reheat heat steam
The connection of the heat supply network 23 of pipeline 200 and second, so as to avoid causing machine because the fault impact turbine system of the second heat supply network 23 runs
Group is shut down, and set grid-connection safe and stable operation is played a protective role.Under non-supplying thermal condition, due to hot arc draw gas quick closing valve regulation
Valve 11 there may be and be not closed completely close problem and easily produce reheat heat steam to leak, and now be drawn gas shut-off by closing hot arc
Valve 20, ensure that and close tightly the hot arc branch road 201 that draws gas, it is to avoid the leakage of reheat heat steam occurs and wastes.
Further, in the present embodiment, height is communicated between High Pressure Steam Host Piping 300 and cold reheaing steam pipe 100
Pressure bypass 301, high pressure turbine by 301 is located at the upstream of high pressure main steam inlet valve group 6.It is provided with by high pressure on high pressure turbine by 301
Road valve 12, high pressure bypass valve 12 is connected with the first water pipeline 500, and the first water pipeline 500 is provided with the first spray water control valve
13。
It is provided with intermediate pressure by-pass 202 on hot reheat steam line 200, intermediate pressure by-pass 202 draws gas branch road 201 positioned at hot arc
Upstream, intermediate pressure by-pass 202 is connected with condenser 4.Be provided with intermediate pressure by-pass valve 14 on intermediate pressure by-pass 202, intermediate pressure by-pass valve 14 with
Second water pipeline 600 is connected, and the second water pipeline 600 is provided with the second spray water control valve 15.
Low voltage bypass 401 is provided with low pressure gas filling pipeline 400, and low voltage bypass 401 is located at the upper of low pressure filling valve group 8
Trip, low voltage bypass 401 is connected with condenser 4.Low voltage bypass valve 16, low voltage bypass valve 16 and are provided with low voltage bypass 401
Three water pipelines 700 are connected, and the 3rd water pipeline 700 is provided with the 3rd spray water control valve 17.
Additionally, air pipeline 102 is provided with cold reheaing steam pipe 100, and air pipeline 102 is located at high exhaust check valve
9 upstream, air pipeline 102 is connected with condenser 4, and row's ventilation valve 18 high is provided with air pipeline 102.
Thus, the double branch road heating systems of the cogeneration turbine of the present embodiment are in steam turbine failure or in the first heat supply network 3
And second heat demand of heat supply network 23 when further increasing, heat supply can be still realized, steam turbine can be cut off, realize steamer
Machine fault condition or full cut condition heat supply, so as to realize the maximization of heat capacity.Now, gas turbine is normal with waste heat boiler
Operation, the high pressure main steam inlet valve group 6, reheated steam inlet valve group 7 of turbine system, low pressure filling valve group 8 and row high
The Close All of non-return valve 9.After high pressure main steam enters High Pressure Steam Host Piping 300, can enter in high pressure turbine by 301, through height
It is passed through in cold reheaing steam pipe 100 after the spray cooling of 12 and first spray water control valve of pressure bypass valve 13 and is divided into two-way：Its
In all the way enter extraction line 104 in, and send into the first heat supply network 3 and/or the heat supply of the second heat supply network 23；Another cold reheating of Lu Zejing is steamed
Steam pipe road 100 enters in reheater 2, and is passed through in hot reheat steam line 200 from the outlet of reheater 2, subsequently into hot arc
Drawn gas branch road 201, and the heat supply of the second heat supply network 23 is sent into after steam header 25.Low-pressure steam in waste heat boiler can then be sent to be taken out
The relatively low heat supply network heat supply of vapour demand pressure parameter, it is also possible to through in the feeding condenser 4 of low voltage bypass 401.
Further, the present embodiment is additionally provided with row's shut-off valve 21 high, height row's shut-off valve 21 on cold reheaing steam pipe 100
Drawn gas in first cold section branch road 101 upstream and be located at high exhaust check valve 9 downstream.In non-faulting operating mode heat supply, Gao Paiguan
Disconnected valve 21 is shown in a fully open operation.In fault condition heat supply, row's shut-off valve 21 high is closed, can prevent from being closed because of high exhaust check valve 9
Imprecision and produce steam to leak, it is to avoid high pressure main steam leaks into height by cold reheaing steam pipe 100 through high exhaust check valve 9
In cylinder pressure HP.
In sum, the double branch road heating systems of the cogeneration turbine of the present embodiment are drawn gas using row high, and are provided with two
The individual cold section of branch road that draws gas in parallel, the steam for obtaining different parameters can be extracted by the two cold section branch road that draws gas, and lead to respectively
In two heat supply networks matched with it toward the demand parameter that draws gas, it is achieved thereby that being simultaneously two heat supply network difference heat supplies, Ke Yiman
The heat demand of foot difference heat supply network.Temperature particularly in height row's steam is only capable of one heat supply temperature parameter of heat supply network of satisfaction will
When asking, and the heat supply temperature parameter request of another heat supply network can not be met, using the double branch of the cogeneration turbine of the present embodiment
Road heating system, it is possible to achieve while meeting the heat demand of the two heat supply networks.For example：The heating parameter demand of the first heat supply network 3
For：1.8MPa, 280 DEG C, flow is 120t/h；The heating parameter demand of the second heat supply network 23 is 2.0MPa, and 350 DEG C, flow is
80t/h.The height of general F grades of Combined Cycle Unit arranges steam (cold reheated steam) parameter for 3.0MPa, 330 DEG C or so, extraction
The pressure of height row's steam can meet the heat supply pressure demand of the first heat supply network 3 and the second heat supply network 23, but the row's steam high for extracting
Temperature cannot meet the heat supply temperature demand of the second heat supply network 23.Now, using the double branch roads of cogeneration turbine of the present embodiment
Heating system, is supplemented by hot arc 201 pairs of secondary cooling zones of branch road drawing gas for branch road 103 of drawing gas of drawing gas, and it is cold to improve second
Section is drawn gas the temperature of the cold reheated steam extracted in branch road 103, the heat supply temperature need higher such that it is able to meet the second heat supply network 23
Ask (higher than row's vapor (steam) temperature high).It is thus, overall with vapour intensification without being carried out to the flow on whole cold section of extraction for heat supply pipeline,
The branch road 103 that only drawn gas to secondary cooling zone carries out matching somebody with somebody vapour on a small quantity.The double branch road heat supply systems of the cogeneration turbine of the present embodiment
System has been obviously improved flexibility and the adaptability of cogeneration system, reduces the phenomenon of high-quality energy waste.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model know-why is not departed from, some improvement and replacement can also be made, these change
Enter and replace also to should be regarded as protection domain of the present utility model.
Claims (12)
1. double branch road heating systems of a kind of cogeneration turbine, it is characterised in that including high pressure cylinder (HP), intermediate pressure cylinder (IP),
Low pressure (LP) cylinder (LP) and reheater (2), the steam drain of the high pressure cylinder (HP) is by cold reheaing steam pipe (100) and the reheating
The entrance connection of device (2), the outlet of the reheater (2) is by hot reheat steam line (200) and medium pressure cylinder (IP)
Air intake is connected, and reheated steam inlet valve group (7) is provided with the air intake of medium pressure cylinder (IP)；In the cold reheated steam
It is connected with the cold section of branch road that draws gas (101) of parallel with one another first on pipeline (100) and secondary cooling zone draws gas branch road (103), it is described
First cold section of branch road that draws gas (101) leads to the first heat supply network (3), and it is cold to be provided with first on described first cold section of branch road that draws gas (101)
Section is drawn gas quick closing valve regulating valve (10)；The secondary cooling zone branch road (103) that draws gas leads to the second heat supply network (23), in the secondary cooling zone
The branch road (103) that draws gas is provided with secondary cooling zone and draws gas quick closing valve regulating valve (24).
2. double branch road heating systems of cogeneration turbine according to claim 1, it is characterised in that described first cold section
Draw gas drawn gas at described first cold section on branch road (101) downstream of quick closing valve regulating valve (10) is provided with first cold section of reducing-and-cooling plant
(5)。
3. double branch road heating systems of cogeneration turbine according to claim 2, it is characterised in that described first cold section
Draw gas on branch road (101) in the case where the downstream of first cold section of reducing-and-cooling plant (5) is in series with by quick closing valve regulating valve (27)
Level reducing-and-cooling plant (26).
4. double branch road heating systems of cogeneration turbine according to claim 3, it is characterised in that subordinate's desuperheat
Decompressor (26) is provided between multiple, and the adjacent subordinate's reducing-and-cooling plant (26) of each two and is equipped with a quick closing valve regulation
Valve (27).
5. double branch road heating systems of cogeneration turbine according to claim 1, it is characterised in that described first cold section
Draw gas drawn gas at described first cold section on branch road (101) downstream of quick closing valve regulating valve (10) is provided with back pressure turbine (29).
6. double branch road heating systems of cogeneration turbine according to claim 5, it is characterised in that the secondary cooling zone
The branch road (103) that draws gas is connected with first heat supply network (3).
7. double branch road heating systems of cogeneration turbine according to claim 1, it is characterised in that the secondary cooling zone
Draw gas and be provided with secondary cooling zone reducing-and-cooling plant in the draw gas downstream of quick closing valve regulating valve (24) of the secondary cooling zone on branch road (103)
(28)。
8. double branch road heating systems of cogeneration turbine according to claim 1, it is characterised in that in the reheat heat
The draws gas hot arc that be communicated between branch road (103) of jet chimney (200) and the secondary cooling zone draws gas branch road (201), and the heat
The section branch road (201) that draws gas draws gas the downstream of quick closing valve regulating valve (24) and the secondary cooling zone draws gas branch road in the secondary cooling zone
(103) connect；Hot arc is provided with the hot arc draws gas branch road (201) to draw gas quick closing valve regulating valve (11).
9. double branch road heating systems of cogeneration turbine according to claim 8, it is characterised in that the hot arc draws gas
On branch road (201) hot arc reducing-and-cooling plant (22) is provided with the draw gas downstream of quick closing valve regulating valve (11) of the hot arc.
10. double branch road heating systems of cogeneration turbine according to claim 8, it is characterised in that described second is cold
Section to be drawn gas and be provided with steam header (25) in the draw gas downstream of quick closing valve regulating valve (24) of the secondary cooling zone on branch road (103), described
The hot arc branch road (201) that draws gas is connected with the steam header (25).
The double branch road heating systems of 11. cogeneration turbines according to claim 8, it is characterised in that the hot arc is taken out
It is provided with hot arc and draws gas shut-off valve (20) in the draw gas upstream of quick closing valve regulating valve (11) of the hot arc on vapour branch road (201).
The double branch road heating systems of 12. cogeneration turbines according to claim 1, it is characterised in that it is described it is cold again
Vapours pipeline (100) is provided with extraction line (104), and the extraction line (104) connects first cold section of branch road that draws gas
(101) drawn gas branch road (103) with secondary cooling zone, the cold section of shut-off valve that draws gas (19) is provided with the extraction line (104).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621087466.0U CN206190339U (en) | 2016-09-27 | 2016-09-27 | Two branch road heating system of cogeneration steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621087466.0U CN206190339U (en) | 2016-09-27 | 2016-09-27 | Two branch road heating system of cogeneration steam turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152317A (en) * | 2017-07-14 | 2017-09-12 | 上海电气电站设备有限公司 | Combination circulation steam turbine quickly starts warming-up system and method |
| CN109798157A (en) * | 2019-02-02 | 2019-05-24 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back coupling steam extraction integrated system and its operation method for thermoelectricity unit power peak regulation |
| CN112065520A (en) * | 2020-09-11 | 2020-12-11 | 国电科学技术研究院有限公司 | Cold and hot re-cooperative steam supply system and method |
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2016
- 2016-09-27 CN CN201621087466.0U patent/CN206190339U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152317A (en) * | 2017-07-14 | 2017-09-12 | 上海电气电站设备有限公司 | Combination circulation steam turbine quickly starts warming-up system and method |
| CN107152317B (en) * | 2017-07-14 | 2023-06-23 | 上海电气电站设备有限公司 | Rapid starting and warming-up system and method for combined cycle steam turbine |
| CN109798157A (en) * | 2019-02-02 | 2019-05-24 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back coupling steam extraction integrated system and its operation method for thermoelectricity unit power peak regulation |
| CN109798157B (en) * | 2019-02-02 | 2024-03-08 | 华电电力科学研究院有限公司 | Condensing and back-pumping coupled steam extraction integrated system for thermoelectric unit power peak regulation and operation method thereof |
| CN112065520A (en) * | 2020-09-11 | 2020-12-11 | 国电科学技术研究院有限公司 | Cold and hot re-cooperative steam supply system and method |
| CN112065520B (en) * | 2020-09-11 | 2021-04-27 | 国电科学技术研究院有限公司 | Cold and hot re-cooperative steam supply system and method |
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