CN110454241A - A kind of turbine steam pressure matcher and device driving function with power generation or electricity - Google Patents
A kind of turbine steam pressure matcher and device driving function with power generation or electricity Download PDFInfo
- Publication number
- CN110454241A CN110454241A CN201910671581.4A CN201910671581A CN110454241A CN 110454241 A CN110454241 A CN 110454241A CN 201910671581 A CN201910671581 A CN 201910671581A CN 110454241 A CN110454241 A CN 110454241A
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- China
- Prior art keywords
- steam
- turbine
- pressure
- power generation
- steamturbine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
Abstract
The present invention discloses a kind of turbine steam pressure matcher that function is driven with power generation or electricity, comprising: conveys the pipe-line system of steam, is provided with steamturbine and vapour compression machine in the pipe-line system；The motor of power generation and driving one, the motor, steamturbine, vapour compression machine are connected by common high speed shaft；Heat supply header, the steam come together in the heat supply header by pipe-line system, and the output end of the heat supply header feeds to heat user.The higher levels of cascade utilization that heating steam energy may be implemented, after being applied to cogeneration power plant large size pure condensate/extraction steam unit, the operating condition in face of unit depth peak regulation changes, and the efficiency of energy utilization of device all keeps best.
Description
Technical field
The invention belongs to the cogeneration of heat and power technical fields of large-scale pure condensate/steam extraction heat supply unit, more particularly to one kind to have hair
Electricity or electricity drive the turbine steam pressure matcher and device of function.
Background technique
Cogeneration of heat and power can reduce the cold source energy of unit generation process, improve thermal power plant's energy utilization rate, be effectively reduced
The consumption of standard coal for power generation of unit significantly improves the heat-economy of unit.Central heating is carried out in cogeneration of heat and power, can be cancelled in region
Disperse arcola, solves dispersion coal-burning boiler disposal of pollutants, it is final to reconcile using station boiler large capacity, efficient feature
The opposition of economic development and environmental protection.Pure condensate/steam extraction cogeneration units in actual operation, the ginseng of unit institute steam pumping
Several parameters with steam needed for user, are difficult to exactly match in unit full working scope, how to reduce section present in heat supplying process
Stream or energy loss, become one of the technical problem that thermal power plant unit generally faces.Scientific and reasonable selection pure condensate generating set steam extraction
Heat supply reforming mode becomes the heat subject of cogeneration of heat and power technology.Currently, pure condensate/extraction and condensing unit heat supply scheme: 1. subtract
2. temperature-decreased pressure reducer scheme sprays steam pressure matching device scheme, 3. the small-sized back pressure machine scheme of heating steam.
Temperature-decreased pressure reducer scheme is simplest heat-supplying mode, but steam energy is not carried out cascade utilization, that is, is existed " high
The problem of energy conversion of grade " is the energy of " low-grade " belongs to " extensive style " production method.Steam jeting pressure adaptation side
Case chooses different high pressure and low-pressure steam vapour source, accelerates high steam with nozzle, low static pressure area is generated, with injection low pressure
Steam, outer defeated after diffusion, the program utilizes the partial pressure energy of high steam, improves low-pressure steam grade, but inside device
The loss of turbulent mixing is very big, and energy-saving effect is poor.The small-sized back pressure machine scheme of heating steam, usual exhaust steam pressure are greater than atmosphere
The steam turbine of pressure is known as back pressure turbine, and the taken out high steam of the program first passes through small-sized back pressure turbine, and (exhaust steam pressure is
The pressure of heating steam), then external heat supply again, realizes the cascade utilization of steam energy.Back pressure machine is steamed using taken out high pressure
Pressure difference between vapour and heating steam generates electricity or output mechanical work, power are determined by heating demand, i.e., " electricity determining by heat ", still
When heating steam requirement is not achieved in back pressure machine exhaust temperature, the power output of back pressure machine is limited, in extreme situations,
It can not may just generate electricity.
Summary of the invention
The present invention provide it is a kind of with power generation or electricity drive function turbine steam pressure matcher, with overcome large-scale pure condensate/
The parameter mismatch problem of steam extraction heat supply unit steam needed for cogeneration of heat and power when institute's steam pumping and heat user, and have and adapt to vapour
Take turns the excellent regulation performance of unit variable working condition and the effect of optimal high steam cascaded utilization of energy.
The invention is realized in this way a kind of turbine steam pressure matcher for driving function with power generation or electricity, comprising:
The pipe-line system of steam is conveyed, is provided with steamturbine and vapour compression machine in the pipe-line system；
The motor of power generation and driving one, the motor, steamturbine, vapour compression machine are connected by common high speed shaft；
Heat supply header, the steam come together in the heat supply header by pipe-line system, and the output end of the heat supply header is fed to
Heat user.
Further, the pipe-line system includes by high voltage charge road, high pressure turbine by, low pressure main line and low pressure aerial drainage
Road is disposed with by-pass reducing valve and bypass attemperator on the high pressure turbine by.
Further, the steamturbine is arranged on the high voltage charge road, and the import of steamturbine is provided with turbine
Stop valve, the outlet of steamturbine are provided with turbine outlet attemperator.
Further, the vapour compression machine is arranged on the low pressure main line, and the import of vapour compression machine is provided with
Variable inlet guide vane, compressor inlet attemperator and the first stop check valve.
Further, the compressor inlet attemperator setting is in the variable inlet guide vane upstream, first cutout
Check-valves is arranged in compressor inlet attemperator upstream.
Further, the steamturbine steam discharge, vapour compression machine steam discharge and high pressure turbine by pressure and temperature reducing steam collect
In heat supply header.
Further, the second stop check valve is provided between the vapour compression machine outlet and the heat supply header.
Further, the low pressure aerial drainage bypasses one end setting and exports it in the second stop check valve and vapour compression machine
Between, the low pressure aerial drainage bypass other end is arranged between the first stop check valve and compressor inlet attemperator.
Further, eduction valve is provided in the low pressure aerial drainage bypass.
A kind of device has above-mentioned turbine steam pressure matcher.
Compared with prior art, the beneficial effects of the present invention are:
(1) the higher levels of cascade utilization that heating steam energy may be implemented, be applied to the pure condensate of cogeneration power plant large size/
After extraction steam unit, the operating condition in face of unit depth peak regulation changes, and the efficiency of energy utilization of device all keeps best.
(2) possess power generation and driving motor integrating, turbine stop valve can keep maximum opening, steam in any operating condition
Turbine is equivalent to back pressure turbine sliding pressure operation --- it is utmostly done work using high steam, heating steam flow is by compression
Machine can lead entry guide vane adjusting, and motor integrating is stablized using input-output power control device in working speed.It is final to solve heat
Electricity Federation produces the problem of unit heating demand is coupled with supply load.
(3) the maximum heating demand of Steam Turbine is greatly promoted, Steam Turbine safety in operation is enhanced.
Detailed description of the invention
Fig. 1 is a kind of showing for turbine steam pressure matcher that function is driven with power generation or electricity that the present invention provides embodiment
It is intended to；
Fig. 2 is a kind of applied field for turbine steam pressure matcher that function is driven with power generation or electricity that the present invention provides embodiment
Scape schematic diagram；
In figure: 1- motor；10- steamturbine；11- stop valve；19- turbine outlet attemperator；20- vapour compression machine；21- is adjustable
Entry guide vane；22- eduction valve；The first stop check valve of 24-；The second stop check valve of 25-；29- compressor inlet attemperator；
31- by-pass reducing valve；39- bypasses attemperator；81- high pressure cylinder；82- intermediate pressure cylinder；83- low pressure (LP) cylinder；84- high steam reheater；
85- intermediate pressure cylinder exhaust pressure adjusting device；100- large size pure condensate/extraction for heat supply Steam Turbine.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, in the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
Embodiment 1
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of turbine steam pressure match driving function with power generation or electricity
Device, comprising: convey the integrated motor 1 of pipe-line system, steamturbine 10, vapour compression machine 20, power generation and the driving of steam, heat supply
Header.
Pipe-line system includes high voltage charge road, high pressure turbine by, low pressure main line and the bypass of low pressure aerial drainage, on high pressure turbine by according to
It is secondary to be provided with by-pass reducing valve 31 and bypass attemperator 39；Steamturbine 10 is arranged on high voltage charge road, steamturbine 10
Import is provided with turbine stop valve 11, and the outlet of steamturbine 10 is provided with turbine outlet attemperator 19；Vapour compression machine 20 is set
It sets on low pressure main line, the import of vapour compression machine 20 is provided with variable inlet guide vane 21,29 and of compressor inlet attemperator
First stop check valve 24；Compressor inlet attemperator 29 is arranged in 21 upstream of variable inlet guide vane, the first stop check valve 24
It is arranged in 29 upstream of compressor inlet attemperator；Motor 1, steamturbine 10, vapour compression machine 20 pass through common high speed shaft phase
Even；Steam comes together in heat supply header by pipe-line system, and 10 steam discharge of steamturbine, 20 steam discharge of vapour compression machine and high pressure turbine by subtract
Warm throttled steam comes together in heat supply header, and the output end of heat supply header feeds to heat user；The outlet of vapour compression machine 20 and heat supply
The second stop check valve 25 is provided between header, low pressure aerial drainage bypasses one end and is arranged in the second stop check valve 25 and vapour pressure
Between the outlet of contracting machine 20, low pressure aerial drainage bypass other end setting the first stop check valve 24 and compressor inlet attemperator 29 it
Between, eduction valve 22 is provided in the bypass of low pressure aerial drainage.
In the present embodiment, the stretching axis connection of motor integrating 1 and turbine or compressor forms cooperative rotor, work
Make invariablenes turning speed；Stop valve 11 is arranged in turbine inlet, and variable inlet guide vane 21, turbine steam discharge port and pressure is arranged in compressor inlet
Contracting machine steam discharge port is connect with heat supply header admission end mouth, the pipe between compressor steam discharge port and heat supply header admission end mouth
The aerial drainage bypass of compressor, downstream and low pressure steam pipe of the other end of aerial drainage bypass in low-pressure steam stop check valve is arranged in road
Road connection；
Wherein, bypass high steam vapour source is connect by decompression desuperheat with heat supply header, as the benefit except turbine and compressor
Vapour source is filled, when device starts or shuts down, main vapour source external heat supply of the road as heat supply header；20 import of vapour compression machine
Attemperator is set, is connected with external desuperheat waterpipe, vapor (steam) temperature closed-loop control adjusts desuperheat aqueous jet according to steam pressure
Amount makes steam keep 20 ~ 30 DEG C of the degree of superheat；Attemperator is arranged in 10 steam discharge section of steamturbine, is connected with external desuperheat waterpipe,
Vapor (steam) temperature closed-loop control, according to the injection flow of the outer requirement adjustment desuperheating water for steam superheat；After by-pass reducing valve 31
Attemperator is designed, is connected with external desuperheat waterpipe, vapor (steam) temperature closed-loop control is adjusted according to the requirement of the heat supply header degree of superheat
The injection flow of desuperheating water.
Embodiment 2
As shown in Figure 1, a kind of turbine steam pressure matcher for driving function with power generation or electricity of the embodiment of the present invention, main portion
Part has power generation and driving motor integrating 1, steamturbine 10, vapour compression machine 20, and three is by working shaft connection, revolving speed when work
Constant, power match；
The import of steamturbine 10 is provided with stop valve 11, is used for starting turbine steam pressure matching；Vapour compression machine 20 into
Mouth is provided with variable inlet guide vane 21, adjusts the steam flow of vapour compression machine 20, increases the nargin of compressor stable operation；
The steam discharge port of steamturbine 10 and the steam discharge port of vapour compression machine 20 are all connect with heat supply header, in compressor steam discharge
Section is provided with the second stop check valve of steam 25 and aerial drainage bypasses, and eduction valve 22 is provided in aerial drainage bypass, and aerial drainage bypasses end
Between compressor inlet attemperator 29 and the first stop check valve of low-pressure steam 24；
By-pass reducing valve 31 is set between high steam vapour source and heat supply header, is stopped working in turbine steam pressure matcher
When, high steam can directly be depressurized by by-pass reducing valve 31, then again after heating steam bypasses 39 desuperheat of attemperator, into
Enter heat supply header；
In addition, being provided with the first stop check valve of steam 24 on the pipeline of low-pressure steam vapour source to 20 import of vapour compression machine
Compression is reduced with the temperature of low-pressure steam compressor inlet attemperator 29, the adjustable low-pressure steam of compressor inlet attemperator 29
The power consumption of machine.
Embodiment 3
As shown in Fig. 2, showing a kind of turbine steam pressure matcher for driving function with power generation or electricity of the embodiment of the present invention
A kind of application scenarios schematic diagram.
It is the large-scale pure condensate Steam Turbine 100 of cogeneration power plant inside rectangular wire frame, from 81 steam discharge section of unit high pressure cylinder
High steam vapour source of the steam extraction as by-pass reducing desuperheat, the overwhelming majority (more than the 95% steam flow) warp of 81 steam discharge of high pressure cylinder
Cross the heating of steam reheater 84, the high steam vapour source from steam extraction after reheater 84 as steamturbine.
Reheated steam enters 82 work done of intermediate pressure cylinder, the low pressure from the 82 steam discharge section steam extraction of unit intermediate pressure cylinder as vapour compression machine
The major part (without steam extraction than limiting at this) of steam source, 82 steam discharge of intermediate pressure cylinder enters 83 work done of low pressure (LP) cylinder through steam discharge butterfly valve 85,
It is discharged into condenser later.
Heating steam pressure is less than 81 exhaust steam pressure of high pressure cylinder, and is greater than 82 exhaust steam pressure of intermediate pressure cylinder, and high steam pushes
10 work done of steamturbine, exhaust steam pressure are set as heating steam pressure, and low-pressure steam is pressurized in vapour compression machine 20, steam discharge pressure
Power is also set to heating steam pressure, converges after the exhaust steam pressure matching of the two, motor integrating can be realized the defeated of mechanical work
Enter or exports, the difference of final equilibrium vapor turbine and vapour compression machine.
Embodiment 4
The present invention can promote separate unit compared with the direct reducing-and-cooling plant of existing high steam and steam jeting pressure adaptation
Steam Turbine maximum heating demand realizes the maximum cascade utilization of high steam energy.The present invention and pure turbine steam pressure
Power adaptation is compared, and working speed is constant, is adjusted simply, and when vapour source pressure significantlys change, heating demand and heating parameter are not
It is impacted, the contradiction of cogeneration units " electricity determining by heat " or " with the fixed heat of electricity " is solved, will realize " decoupling " of power supply and heat supply.
The present invention by a kind of design there are many adjusting method, motor integrating, turbine and compressor coaxially work it is more
Vapour source steam pressure matching device solves, and the principle of the present invention is to extract high steam driving turbine rotation, turbine exhaust steam pressure
It is set as outer for steam pressure, turbine drives vapour compression machine by working together axis, and the low-pressure steam after being pressurized desuperheat is to outer
For steam pressure, finally converge with turbine steam discharge, meets the outer parameter requirements for steam through desuperheat.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of turbine steam pressure matcher for driving function with power generation or electricity characterized by comprising
The pipe-line system of steam is conveyed, is provided with steamturbine and vapour compression machine in the pipe-line system；
The motor of power generation and driving one, the motor, steamturbine, vapour compression machine are connected by common high speed shaft；
Heat supply header, the steam come together in the heat supply header by pipe-line system, and the output end of the heat supply header is fed to
Heat user.
2. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 1, feature exist
In: the pipe-line system includes high voltage charge road, high pressure turbine by, low pressure main line and the bypass of low pressure aerial drainage, the high pressure turbine by
On be disposed with by-pass reducing valve and bypass attemperator.
3. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 2, feature exist
In: the steamturbine is arranged on the high voltage charge road, and the import of steamturbine is provided with turbine stop valve, steamturbine
Outlet be provided with turbine outlet attemperator.
4. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 3, feature exist
In: the vapour compression machine is arranged on the low pressure main line, and the import of vapour compression machine is provided with variable inlet guide vane, pressure
Contracting machine import attemperator and the first stop check valve.
5. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 4, feature exist
In: in the variable inlet guide vane upstream, first stop check valve is arranged in institute for the compressor inlet attemperator setting
State compressor inlet attemperator upstream.
6. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 5, feature exist
In: the steamturbine steam discharge, vapour compression machine steam discharge and high pressure turbine by pressure and temperature reducing steam come together in heat supply header.
7. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 6, feature exist
In: the second stop check valve is provided between the vapour compression machine outlet and the heat supply header.
8. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 7, feature exist
In: the low pressure aerial drainage bypasses one end setting between the second stop check valve and vapour compression machine outlet, the low pressure aerial drainage
The other end is bypassed to be arranged between the first stop check valve and compressor inlet attemperator.
9. a kind of turbine steam pressure matcher for driving function with power generation or electricity according to claim 8, feature exist
In: eduction valve is provided in the low pressure aerial drainage bypass.
10. a kind of device, with any turbine steam pressure matcher of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671581.4A CN110454241A (en) | 2019-07-24 | 2019-07-24 | A kind of turbine steam pressure matcher and device driving function with power generation or electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671581.4A CN110454241A (en) | 2019-07-24 | 2019-07-24 | A kind of turbine steam pressure matcher and device driving function with power generation or electricity |
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| Publication Number | Publication Date |
|---|---|
| CN110454241A true CN110454241A (en) | 2019-11-15 |
Family
ID=68483293
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910671581.4A Pending CN110454241A (en) | 2019-07-24 | 2019-07-24 | A kind of turbine steam pressure matcher and device driving function with power generation or electricity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075516A (en) * | 2019-12-06 | 2020-04-28 | 浙江浙能技术研究院有限公司 | Adaptive parameter change control system and method for steam turbocharger |
| CN112228940A (en) * | 2020-09-10 | 2021-01-15 | 北京京能科技有限公司 | Heating system combining vapor compressor and high-back-pressure heating and adjusting method |
| CN112361423A (en) * | 2020-10-30 | 2021-02-12 | 广西电网有限责任公司电力科学研究院 | Low-pressure steam source boosting and heating device of cogeneration unit |
| CN113864747A (en) * | 2021-10-20 | 2021-12-31 | 西安西热节能技术有限公司 | Industrial steam composite steam supply system |
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| US4240260A (en) * | 1977-11-29 | 1980-12-23 | Sca Development Aktiebolag | Steam treating method and system |
| CN101280695A (en) * | 2007-04-05 | 2008-10-08 | 株式会社神户制钢所 | Steam recovery apparatus |
| CN102575531A (en) * | 2009-08-24 | 2012-07-11 | 贝努瓦·詹维尔 | Method and system for generating high pressure steam |
| TW201437559A (en) * | 2013-03-29 | 2014-10-01 | Chiyoda Corp | Steam processing apparatus and steam processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240260A (en) * | 1977-11-29 | 1980-12-23 | Sca Development Aktiebolag | Steam treating method and system |
| CN101280695A (en) * | 2007-04-05 | 2008-10-08 | 株式会社神户制钢所 | Steam recovery apparatus |
| CN102575531A (en) * | 2009-08-24 | 2012-07-11 | 贝努瓦·詹维尔 | Method and system for generating high pressure steam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075516A (en) * | 2019-12-06 | 2020-04-28 | 浙江浙能技术研究院有限公司 | Adaptive parameter change control system and method for steam turbocharger |
| CN112228940A (en) * | 2020-09-10 | 2021-01-15 | 北京京能科技有限公司 | Heating system combining vapor compressor and high-back-pressure heating and adjusting method |
| CN112361423A (en) * | 2020-10-30 | 2021-02-12 | 广西电网有限责任公司电力科学研究院 | Low-pressure steam source boosting and heating device of cogeneration unit |
| CN113864747A (en) * | 2021-10-20 | 2021-12-31 | 西安西热节能技术有限公司 | Industrial steam composite steam supply system |
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Application publication date: 20191115 |
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