CN106948889B - A kind of combined fixed injector group industry steam supply adjusting method and system configuration by temperature-decreased pressure reducer synergic adjustment - Google Patents
A kind of combined fixed injector group industry steam supply adjusting method and system configuration by temperature-decreased pressure reducer synergic adjustment Download PDFInfo
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- CN106948889B CN106948889B CN201710157798.4A CN201710157798A CN106948889B CN 106948889 B CN106948889 B CN 106948889B CN 201710157798 A CN201710157798 A CN 201710157798A CN 106948889 B CN106948889 B CN 106948889B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
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Abstract
The present invention provides a kind of combined fixed injector group industry steam supply adjusting method and system configuration by temperature-decreased pressure reducer cooperative achievement continuous flow regulation, and the system configuration includes mainly the fixed steam jet ejector and a temperature-decreased pressure reducer, high-pressure steam source, low pressure vapour source, adjusting control module and the valves and fittings for connecting above equipment of branched different certain flow ratios.Give different injectors and attemperator flow design method.It is coupled by using the fixed steam jet ejector of branched different flow and the temperature-decreased pressure reducer of smaller flow, enables the system to adapt to the Study on Variable Condition Features such as unit load variations while flow-rate adjustment obtains meeting by the adjusting method.Present system is particularly suitable for the matching of high pressure force parameter steam, it can be achieved that all keeping Effec-tive Function in industrial steam supply different load stage steam injector.There is the characteristics of efficient under full working scope and high safety and reliability compared with existing adjustable steam jet ejector.
Description
Technical field
The present invention relates to the mating heating systems of thermal power generation unit industry steam supply, more particularly, to one kind by temperature-decreased pressure reducer
The combined fixed injector group industry steam supply adjusting method and system configuration of synergic adjustment
Background technology
As country is to energy-saving and environment-friendly pay attention to day by day, more and more thermal power generation corporations have carried out cogeneration of heat and power and have changed
It makes, cogeneration of heat and power is one of the important means of energy saving, raising unit economy, and promotes Sustainable Socioeconomic Development
Important measures.The southern area cogeneration of heat and power of not central heating is mainly implemented by carrying out industry for vapor reformation
's.
Industry is carried out to former pure condensate fired power generating unit, following three kinds of modes substantially can be used for vapor reformation：
One, it unit retrofit of Flow and installs rotating barrier additional, makes adjustable extraction turbine into, which is applicable in
Property it is strong, all units can be transformed in this way, but improvement cost is high, and intermediate pressure cylinder rotor and cylinder will be made again
It makes.
Two, selection is compared with high parameter vapour source, and through temperature-decreased pressure reducer steam supply, this method is simple, but the thermal efficiency is low, because of desuperheat
Decompression causes steam available energy lost, is improved seldom than not thermal power plant unit efficiency, but which improvement cost is low.
Three, steam jet ejector, steam of the matching higher than the steam suction for thermal pressure less than pressure of steam supply, after mixing are utilized
For industrial steam supply, but which is poor for unit load and industrial steam supply thermic load fluctuation adaptability, especially for senior middle school
The industrial steam supply of pressure, which all cannot be satisfied load fluctuation and reliability requirement substantially.
Application number：The Chinese utility model patent of CN201020569134.2 discloses a kind of steam jet ejector group and attaches together
Set, the utility model device be traditional steam jet ejector high pressure entry end A and outlet end B respectively from different steam storage tanks
It is connected, it can be a steam jet ejector to be connected between two steam storage tanks, can also be more steam jet ejector parallel connections
Or it is connected in series with；A bypass can also be connected between two steam storage tanks, bypass can be with regulating valve or pressure reducing valve.The practicality is new
Steam storage tank described in type can be simple storage tank, can also be phase-change type steam accumulator.The dress that the utility model proposes
Setting can make steam jet ejector in the case of larger load fluctuation, remain to stable work.But the solution that the utility model proposes
Certainly the mode of problem is arrival end and the steam storage tank of outlet end, has essential distinction with system of the present invention, also without effective
The combination configured using the different flow of steam jet ejector itself, does not describe injector Combination Design principle, sprays steam
The configuration of device combined system does not relate to, and also without the description of associated adjustment method, the device is with usual manner to when efficiency
Quality does not describe.
In the prior art, it is primarily present defect below：
1, unit retrofit of Flow and install that rotating barrier mode improvement cost is high, and intermediate pressure cylinder rotor and cylinder will weigh additional
Coming of new need to do turbine body larger transformation, and consider improvement cost and its influences the technology existing to host
It is larger using difficulty on pure condensate unit.
2, compared with high parameter steam after pressure and temperature reducing steam supply, which thermal efficiency is low, larger to steam available energy lost, answers
It is had a greatly reduced quality with rear effects of energy saving and emission reduction.
3, existing steam jet ejector technology fluctuates bad adaptability, especially needle to unit electric load and industrial steam supply thermic load
The problems such as centering high pressure industrial steam supply, adjustable steam ejector effective percentage is low, poor reliability, steam jet ejector has minimum flow
Limitation causes the system industrial steam supply flow using the technology that cannot meet full working scope adjusting.
Invention content
In order to overcome drawbacks described above in the prior art, the present invention to propose a kind of group by temperature-decreased pressure reducer synergic adjustment
Fixed injector group industry steam supply adjusting method is closed, the adjusting method is implemented by following system configuration, system configuration master
To include fixed steam jet ejector a (101), fixed steam jet ejector b (102), fixed steam jet ejector c (103) subtracts
Temperature-decreased pressure reducer (104), industrial steam supply header (105), low pressure vapour source (111), high-pressure steam source (112), desuperheating water (113), industry
Header vapor (114), low pressure vapour source is respectively to fixed steam jet ejector a (101), fixed steam jet ejector b (102), solid
The steam jet ejector electric check valve a (201) of fixed pattern steam jet ejector c (103), steam jet ejector electric check valve b (202),
Steam jet ejector electric check valve c (203), high-pressure steam source are sprayed to fixed steam jet ejector a (101), fixed steam respectively
Emitter b (102), steam jet ejector electric check valve d (204), the steam jet ejector of fixed steam jet ejector c (103) are electronic
Shut-off valve e (205), steam jet ejector electric check valve f (206), Desuperheating water regulating valve (207) are sprayed in fixed steam respectively
The steam injection of the outlet setting of emitter a (101), fixed steam jet ejector b (102), fixed steam jet ejector c (103)
Device outlet shutoff valve a (208), steam jet ejector outlet shutoff valve b (209), steam jet ejector outlet shutoff valve c (210), desuperheat
The valves and fittings of shut-off valve (211) after pressure reducer, industrial steam supply header outlet shutoff valve (212), and connection above equipment.
The steam jet ejector and temperature-decreased pressure reducer configuration constraint condition of the adjusting method are as follows：
The constraints adapts to two fixed steam jet ejectors and combines system above；
In formula：QaFor fixed steam jet ejector a design discharges；QbFor fixed steam jet ejector b design discharges；QcFor
Fixed steam jet ejector c design discharges；QdFor fixed steam jet ejector d design discharges；QjmaxIt is set for temperature-decreased pressure reducer maximum
Count flow；Q is industry for vapor reformation heat user demand maximum stream flow；QjFor temperature-decreased pressure reducer operating flux；N is system adjustment essence
Spend control parameter.
Formula (401) is the constraint formulations of the sum of whole fixed steam jet ejectors and temperature-decreased pressure reducer maximum stream flow, table
The sum of bright all unit equipment maximum stream flows are equal for vapor reformation heat user demand maximum stream flow with industry, meet design requirement；
Formula (402) shows fixed steam jet ejector a design discharges and industry for being closed between vapor reformation heat user demand maximum stream flow
System；Formula (403) shows fixed steam jet ejector b design discharges and industry between vapor reformation heat user demand maximum stream flow
Relationship；Formula (404) show fixed steam jet ejector c design discharges with industry for vapor reformation heat user demand maximum stream flow it
Between relationship；Formula (405) shows fixed steam jet ejector d design discharges with industry for vapor reformation heat user demand maximum stream flow
Between relationship；Formula (406) shows the fixed steam jet ejector a of temperature-decreased pressure reducer design maximum flow and design discharge minimum
Design discharge is equal, shows that the high-grade energy of the invention that reduces to the greatest extent consumes；Formula (407) shows that temperature-decreased pressure reducer is transported
Row flow is between design maximum flow and zero.
It can advantage is obtained that compared with the existing technology using the adjusting method of the present invention：
1, system of the present invention is cooperateed with by the fixed steam jet ejector of different flow and small flow temperature-decreased pressure reducer
It adjusts and realizes that industry for vapor reformation, is not transformed turbine body, improvement cost is relatively low.
2, using system of the present invention and adjusting method, flexibly each unit equipment of switching can to put into fixed steam
Injector is run in relative efficiency point, and as much as possible to utilize low pressure vapour source steam, the thermal efficiency is high, and effects of energy saving and emission reduction is aobvious
It writes.
3, using system of the present invention and adjusting method, can flexibly each unit equipment of switching with adapt to unit electric load and
Industrial steam supply thermic load variation, opposite adjustable steam ejector, this system is efficient, reliability is high, since this system is special
Combination can realize that industrial steam supply flow full working scope is adjusted.
4, the present invention provides ' In System Reconfiguration Method and adjusting method for the system, according to the configuration method and tune
Section method can reduce system reform cost and improve running efficiency of system.
5, the present invention is suitable for mesohigh parameter industry for vapor reformation, and when mesohigh steam supply is run for the system
Also higher thermal efficiency can be kept.
Description of the drawings
Fig. 1：The system layout of the present invention；
Fig. 2：The steam jet ejector of the present invention combines full working scope efficiency schematic graph.
Wherein reference numeral is as follows：Fixed steam jet ejector a (101), fixed steam jet ejector b (102) are fixed
Steam jet ejector c (103), temperature-decreased pressure reducer (104), industrial steam supply header (105), low pressure vapour source (111), high-pressure steam source
(112), desuperheating water (113), industrial header vapor (114), low pressure vapour source is respectively to fixed steam jet ejector a (101), fixation
Formula steam jet ejector b (102), the steam jet ejector electric check valve a (201) of fixed steam jet ejector c (103), steam spray
Emitter electric check valve b (202), steam jet ejector electric check valve c (203), high-pressure steam source are sprayed to fixed steam respectively
The steam jet ejector electric check valve d of device a (101), fixed steam jet ejector b (102), fixed steam jet ejector c (103)
(204), steam jet ejector electric check valve e (205), steam jet ejector electric check valve f (206), Desuperheating water regulating valve
(207), respectively in steam jet ejector electric check valve a (201), steam jet ejector electric check valve b (202), steam jet ejector
Steam jet ejector outlet shutoff valve a (208), the steam jet ejector outlet shutoff valve b of the outlet setting of electric check valve c (203)
(209), (210) steam jet ejector outlet shutoff valve c, shut-off valve (211) after temperature-decreased pressure reducer, industrial steam supply header outlet cut-off
Valve (212)；
Specific implementation mode
Below in conjunction with attached Fig. 1 and 2, the present invention is described in more detail, with reference to figure 1, the present invention propose it is a kind of by
The combined fixed injector group industry steam supply adjusting method of temperature-decreased pressure reducer synergic adjustment, the adjusting method is by following system
Configuration is implemented, which includes mainly fixed steam jet ejector a (101), and fixed steam jet ejector b (102) is fixed
Formula steam jet ejector c (103), temperature-decreased pressure reducer (104), industrial steam supply header (105), low pressure vapour source (111), high-pressure steam source
(112), desuperheating water (113), industrial header vapor (114), low pressure vapour source is respectively to fixed steam jet ejector a (101), fixation
Formula steam jet ejector b (102), the steam jet ejector electric check valve a (201) of fixed steam jet ejector c (103), steam spray
Emitter electric check valve b (202), steam jet ejector electric check valve c (203), high-pressure steam source are sprayed to fixed steam respectively
The steam jet ejector electric check valve d of device a (101), fixed steam jet ejector b (102), fixed steam jet ejector c (103)
(204), steam jet ejector electric check valve e (205), steam jet ejector electric check valve f (206), Desuperheating water regulating valve
(207), respectively in fixed steam jet ejector a (101), fixed steam jet ejector b (102), fixed steam jet ejector c
(103) the steam jet ejector outlet shutoff valve a (208) of outlet setting, steam jet ejector outlet shutoff valve b (209), steam spray
Emitter outlet shutoff valve c (210), shut-off valve (211) after temperature-decreased pressure reducer, industrial steam supply header outlet shutoff valve (212), and
Connect the valves and fittings of above equipment.
The steam jet ejector and temperature-decreased pressure reducer configuration constraint condition of the adjusting method are as follows：
The constraints adapts to two fixed steam jet ejector system above；
In formula：QaFor fixed steam jet ejector a design discharges；QbFor fixed steam jet ejector b design discharges；QcFor
Fixed steam jet ejector c design discharges；QdFor fixed steam jet ejector d design discharges；QjmaxIt is set for temperature-decreased pressure reducer maximum
Count flow；Q is industry for vapor reformation heat user demand maximum stream flow；QjFor temperature-decreased pressure reducer operating flux；N is system adjustment essence
Spend control parameter.
Formula (401) is the constraint formulations of the sum of whole fixed steam jet ejectors and temperature-decreased pressure reducer maximum stream flow, table
The sum of bright all unit equipment maximum stream flows are equal for vapor reformation heat user demand maximum stream flow with industry, meet design requirement；
Formula (402) shows fixed steam jet ejector a design discharges and industry for being closed between vapor reformation heat user demand maximum stream flow
System；Formula (403) shows fixed steam jet ejector b design discharges and industry between vapor reformation heat user demand maximum stream flow
Relationship；Formula (404) show fixed steam jet ejector c design discharges with industry for vapor reformation heat user demand maximum stream flow it
Between relationship；Formula (405) shows fixed steam jet ejector d design discharges with industry for vapor reformation heat user demand maximum stream flow
Between relationship；Formula (406) shows the fixed steam jet ejector a of temperature-decreased pressure reducer design maximum flow and design discharge minimum
Design discharge is equal, shows that the high-grade energy of the invention that reduces to the greatest extent consumes；Formula (407) shows that temperature-decreased pressure reducer is transported
Row flow is between design maximum flow and zero.
System control mode and typical condition flow of the present invention
System adjustment governing equation of the present invention is as follows：
The constraints adapts to two fixed steam jet ejector system above, is not limited to system described in attached drawing 1.
In formula：M is fixed steam jet ejector a switching controlled quentity controlled variables；N is fixed steam jet ejector b switching controlled quentity controlled variables；l
For fixed steam jet ejector c switching controlled quentity controlled variables；H is fixed steam jet ejector d switching controlled quentity controlled variables；Q is that industrial steam supply heat is used
Family demand quantity of steam；
Formula (501) is each fixed steam jet ejector and temperature-decreased pressure reducer switching governing equation；Formula (502) shows work
Industry steam supply heat user demand quantity of steam variation range；The fixed steam jet ejector a switchings controlled quentity controlled variable assignment of formula (503)；Formula
(504) fixed steam jet ejector b switchings controlled quentity controlled variable assignment；The fixed steam jet ejector c switching controlled quentity controlled variables of formula (505) are assigned
Value；The fixed steam jet ejector d switchings controlled quentity controlled variable assignment of formula (506)；
Seven kinds of typical condition flows of system and control mode point of the present invention or less：
1, temperature-decreased pressure reducer (104) is put into, and fixed steam injector is not put into, and Desuperheating water regulating valve (207) controls desuperheat
Water (113) input amount carrys out steam from high-pressure steam source (112) and reaches industrial steam supply heat user need after temperature-decreased pressure reducer (104)
Extremely industrial steam supply header (105) is sent out after seeking parameter；
2, temperature-decreased pressure reducer (104) put into, fixed steam injector a (101) input, high-pressure steam source (112) come steam into
Enter fixed steam injector a (101) injection draws low pressure vapour sources (111) and carry out steam, comes by desuperheat with from high-pressure steam source (112)
Pressure reducer (104) afterwards after industrial steam supply header (105) mixes send out by steam；
3, temperature-decreased pressure reducer (104) put into, fixed steam injector b (102) input, high-pressure steam source (112) come steam into
Enter fixed steam injector b (102) injection draws low pressure vapour sources (111) and carry out steam, comes by desuperheat with from high-pressure steam source (112)
Pressure reducer (104) afterwards after industrial steam supply header (105) mixes send out by steam；
4, temperature-decreased pressure reducer (104) put into, fixed steam injector c (103) input, high-pressure steam source (112) come steam into
Enter fixed steam injector c (103) injection draws low pressure vapour sources (111) and carry out steam, comes by desuperheat with from high-pressure steam source (112)
Pressure reducer (104) afterwards after industrial steam supply header (105) mixes send out by steam；
5, temperature-decreased pressure reducer (104) is put into, and fixed steam injector a (101) and fixed steam injector c (103) is simultaneously
Input, high-pressure steam source (112) carry out steam and enter fixed steam injector a (101) and fixed steam injector c (103) injection pumpings
It inhales low pressure vapour source (111) and carrys out steam, carry out after temperature-decreased pressure reducer (104) steam in industrial steam supply with from high-pressure steam source (112)
It is sent out after header (105) mixing；
6, temperature-decreased pressure reducer (104) is put into, and fixed steam injector b (102) and fixed steam injector c (103) is simultaneously
Input, high-pressure steam source (112) carry out steam and enter fixed steam injector b (102) and fixed steam injector c (103) injection pumpings
It inhales low pressure vapour source (111) and carrys out steam, carry out after temperature-decreased pressure reducer (104) steam in industrial steam supply with from high-pressure steam source (112)
It is sent out after header (105) mixing；
7, temperature-decreased pressure reducer (104) is put into, fixed steam injector a (101), fixed steam injector b (102) and fixation
Steam jet ejector c (103) is put into simultaneously, and high-pressure steam source (112) carrys out steam while entering fixed steam injector a (101), fixing
Steam jet ejector b (102) and fixed steam injector c (103) injection draws low pressure vapour source (111) carry out steam, and from high pressure vapour
Source (112) come after temperature-decreased pressure reducer (104) steam industrial steam supply header (105) mix after send out；
Industrial evaporation capacity for engine full working scope can be realized by system above and control system to adjust, each fixed steam injection
It is run in operating point for design after device input, operational efficiency is also in design peak.
Three, system performance of the present invention compares
System of the present invention and conventional adjustable steam ejector system effectiveness correlation curve are as shown in Fig. 2.This hair
The bright system steam jet device combination full working scope efficiency profile (301), general adjustable steam ejector full working scope effect
Rate profile (302) can intuitively contrast system steam jet device of the present invention from attached drawing 2 and combine full working scope average efficiency
Far above general adjustable steam ejector full working scope average efficiency.
General adjustable steam ejector efficiency descriptive equation is as follows：
In formula：η1For adjustable steam ejector efficiency；Full working scope efficiency is run for adjustable steam ejector；η1max
For adjustable steam ejector peak efficiency；Thermic load flow value is often used for industrial steam supply heat user；
Formula (601) is adjustable steam ejector efficiency defined formula；Formula (602) adjustable steam ejector is run
Full working scope efficiency integral formula；Formula (603) shows adjustable steam ejector high efficiency point design in industrial steam supply heat user
Common thermic load point.
System steam jet device combined efficiency descriptive equation of the present invention is as follows：
In formula：η2To invent the system in combination steam jet ejector efficiency；S is system configuration temperature-decreased pressure reducer operating flux
With design maximum flow-rate ratio；η2maxFor combined steam injector peak efficiency；Full working scope effect is run for combined steam injector
Rate；
Formula (701) is system in combination steam jet ejector efficiency defined formula of the present invention；Formula (702) is invention institute
State system in combination steam jet ejector real-time traffic defined formula；Formula (703) is to define combined steam injector real-time traffic
Formula substitutes into formula (701) and arranges gained formula；Formula (704) shows combined steam injector peak efficiency and adjustable steam
Injector peak efficiency is equal；Formula (705) is the present system combined steam injector operation full working scope effect that integral acquires
Rate, from formula it can be seen that system in combination steam jet ejector efficiency of the present invention will be far above equal conditions under it is adjustable
Steam jet ejector efficiency.
It is remote high that combined steam ejector efficiency under system and control mode of the present invention can be obtained by the analysis of upper two formula
Adjustable steam ejector efficiency under equal conditions.
Four, system implementation case study of the present invention
2 × 600MW of certain power plant grade supercritical units, existing parameter be 1.5MPa, 300 DEG C, 0-210t/h industry steam supplies
Transformation demand, high-pressure steam source 3.8MPa, 380 DEG C of steam turbine high-pressure cylinder steam discharge steam extractions, low pressure vapour source are 1MPa, 330 DEG C of steamers
Machine intermediate pressure cylinder steam discharge steam extraction；Industrial steam supply year hours of operation 7000 hours.
Industrial steam supply load setting is allocated as follows table：
| Industrial steam supply load setting | Load accounting | Hours of operation |
| 0~40t/h | 0.1 | 700 |
| 40~80t/h | 0.15 | 1050 |
| 80~120t/h | 0.25 | 1750 |
| 120~160t/h | 0.35 | 2450 |
| 160~210t/h | 0.15 | 1050 |
Adjustable spraying apparatus scheme：Two 105t/h adjustable spraying apparatus combine steam supply, and high-efficiency point is located at 70t/h, spray
Device suction and pumping are than 0.715.
System schema of the present invention：With a 30t/h temperature-decreased pressure reducer, a 30t/h fixed steam injector, one
60t/h fixed steam injectors, a 120t/h fixed steam injector, fixed steam jet ejector suction and pumping ratio is 0.715,
And fixed injector is that design nominal steam amount is in high-efficiency point when putting into operation.
Adjustable spraying apparatus scheme compares such as following table with system schema suction and pumping of the present invention：
Scheme of the present invention is averaged suction and pumping than raising 47.58%, system of the present invention compared with adjustable spraying apparatus full working scope
System is suitble to full working scope to run especially smaller traffic load, and Conventional tunable formula injector scheme can not be normal under the load condition point
Work.
About 78.925 ten thousand tons of year evaporation capacity for engine is calculated according to the above analysis, system of the present invention is compared with adjustable spraying apparatus scheme
Utilize about 6.928 ten thousand tons of intermediate pressure cylinder steam discharge steam extraction, and intermediate pressure cylinder steam discharge steam extraction vapour section per ton compared with high pressure cylinder steam discharge steam extraction more
About about 0.02 ton of mark coal amount, i.e. 1385.6 tons of year amount of saving coal, if mark coal single machine, by 600 yuan/ton of calculating, only technical solution is improved
About 83.14 ten thousand yuan every year of the economic well-being of workers and staff brought.
System and control mode of the present invention are not limited only to above seven kinds typical operating conditions.
System fixed steam injector combination of the present invention is not limited to shown in attached drawing 1 three, can also be two, four
Combination.
Claims (1)
1. a kind of combined fixed injector group industry steam supply adjusting method by temperature-decreased pressure reducer synergic adjustment, the adjusting side
Method is implemented by following system configuration, which includes mainly fixed steam jet ejector a (101), fixed steam injection
Device b (102), fixed steam jet ejector c (103), temperature-decreased pressure reducer (104), industrial steam supply header (105), low pressure vapour source
(111), high-pressure steam source (112), desuperheating water (113), industrial header vapor (114), fixed steam jet ejector d；
Wherein, low pressure vapour source is respectively to fixed steam jet ejector a (101), fixed steam jet ejector b (102), fixed steaming
The steam jet ejector electric check valve a (201) of vapour injector c (103), steam jet ejector electric check valve b (202), steam spray
Emitter electric check valve c (203), high-pressure steam source is respectively to fixed steam jet ejector a (101), fixed steam jet ejector b
(102), steam jet ejector electric check valve d (204), the steam jet ejector electric check valve of fixed steam jet ejector c (103)
E (205), steam jet ejector electric check valve f (206), Desuperheating water regulating valve (207), respectively in fixed steam jet ejector a
(101), the steam jet ejector outlet that the outlet of fixed steam jet ejector b (102), fixed steam jet ejector c (103) is arranged
Shut-off valve a (208), steam jet ejector outlet shutoff valve b (209), steam jet ejector outlet shutoff valve c (210), temperature-decreased pressure reducer
Shut-off valve (211) afterwards, industrial steam supply header outlet shutoff valve (212), and it is connected to above-mentioned steam jet ejector, pressure and temperature reducing
Valves and fittings between device, industrial steam supply header, low pressure vapour source, high-pressure steam source, industrial header vapor；
The steam jet ejector and temperature-decreased pressure reducer configuration constraint condition of the adjusting method are as follows：
The constraints adapts to two fixed steam jet ejectors and combines system above；
In formula：QaFor fixed steam jet ejector a design discharges；QbFor fixed steam jet ejector b design discharges；QcFor fixation
Formula steam jet ejector c design discharges；QdFor fixed steam jet ejector d design discharges；QjmaxFor temperature-decreased pressure reducer design maximum stream
Amount；Q is industry for vapor reformation heat user demand maximum stream flow；QjFor temperature-decreased pressure reducer operating flux；N is system adjustment precision control
Parameter processed.
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| CN201710157798.4A CN106948889B (en) | 2017-03-16 | 2017-03-16 | A kind of combined fixed injector group industry steam supply adjusting method and system configuration by temperature-decreased pressure reducer synergic adjustment |
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|---|---|---|---|
| CN201710157798.4A CN106948889B (en) | 2017-03-16 | 2017-03-16 | A kind of combined fixed injector group industry steam supply adjusting method and system configuration by temperature-decreased pressure reducer synergic adjustment |
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| CN108468575B (en) * | 2018-04-20 | 2024-03-08 | 中国联合工程有限公司 | System for changing extraction condensing unit into back pressure unit based on injection heat pump and operation method thereof |
| CN109372806A (en) * | 2018-10-24 | 2019-02-22 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of TVC integrated system for large-scale low-temperature multi-effect seawater desalination device |
| CN114135927B (en) * | 2021-11-05 | 2023-06-27 | 华能海南发电股份有限公司东方电厂 | Hot press steam extraction and heat supply control method and system |
| CN114718916B (en) * | 2022-04-24 | 2023-08-04 | 郭兴军 | Energy-saving gas heating system for supplying steam by using steam injector |
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| JP2007303808A (en) * | 2006-04-14 | 2007-11-22 | Miura Co Ltd | Control method for drive steam amount in steam ejector, control method for drive steam pressure in steam ejector, and control method for decompression system constituted of steam ejector |
| CN202303310U (en) * | 2011-04-18 | 2012-07-04 | 杭州术通高端仪器有限公司 | Vapor and condensed water residual heat reuse system with temperature and pressure regulation function |
| CN204062995U (en) * | 2014-07-02 | 2014-12-31 | 上海硕翼机电设备有限公司 | Reducing-and-cooling plant |
| CN105698154A (en) * | 2016-04-01 | 2016-06-22 | 浙江大学 | High-efficiency pure steam generation system with steam ejector and energy-saving synergism method thereof |
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