CN102518478A - Steam turbine for desalting seawater and controlling method for steam turbine - Google Patents
Steam turbine for desalting seawater and controlling method for steam turbine Download PDFInfo
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- CN102518478A CN102518478A CN2011104439813A CN201110443981A CN102518478A CN 102518478 A CN102518478 A CN 102518478A CN 2011104439813 A CN2011104439813 A CN 2011104439813A CN 201110443981 A CN201110443981 A CN 201110443981A CN 102518478 A CN102518478 A CN 102518478A
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- 239000013535 sea water Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 14
- 238000011033 desalting Methods 0.000 title abstract 4
- 238000000605 extraction Methods 0.000 claims description 70
- 238000001514 detection method Methods 0.000 claims description 29
- 238000010612 desalination reaction Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 8
- 230000006837 decompression Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Control Of Turbines (AREA)
Abstract
The invention discloses a steam turbine for desalting seawater. The steam turbine comprises a steam turbine rotor, a steam inlet pipe, a steam discharge pipe, a steam inlet adjusting valve positioned on the steam inlet pipe and a controller for controlling the operation of the steam inlet adjusting valve; the output of the steam discharge pipe is connected with a seawater desalting device; the steam turbine also comprises a steam discharge pressure detecting unit arranged on the steam discharge pipe and a speed detecting unit for detecting the rotating speed of the steam turbine rotor; the signals of the steam discharge pressure detecting unit and the speed detecting unit are input to the controller; the speed detecting unit, the controller and the steam inlet adjusting valve form a rotating speed closed-loop control system; the controller adjusts the steam inlet adjusting valve according to the rotating speed of the rotor; and the pressure signal of the steam discharge pressure detecting unit is compared with a given pressure signal and then used as the given signal of the rotating speed, thus the pressure control is used as cascade control and integrated in the rotating speed closed-loop control system. The steam turbine ensures stable operation of a system, realizes automatic control of the steam discharge temperature through a series of means, and can effectively meet the seawater desalting requirement.
Description
Technical field
The present invention relates to a kind of steam turbine, especially a kind of steam turbine and controlling method thereof that is used for desalination of sea water.
Background technique
Along with development of science and technology, the energy-consuming demand increases rapidly, and the freshwater resources supply has become the subject matter of 21 century.With regard to desalination of sea water, 80% is obtained and adopts the way of distillation to obtain, and the required steam world generally adopts high-quality steam pressure and temperature reducing gained, and the significant wastage that this just causes heat energy is difficult to reach purpose of energy saving.Adopt the coproduction of water power vapour, obtain the light required heat energy in sea on the one hand, obtain a large amount of additional electric energy on the one hand, also externally heat supply on the one hand reaches the maximum use of the energy.Domestic and international existing water power coproduction steam turbine or blank out still can not be realized the automatic adjusting of desalination of sea water temperature required (extra large light device is strict to the requirement restriction of temperature), more externally heat supply on this basis.
Summary of the invention
The objective of the invention is a kind of steam turbine and controlling method thereof that is used for desalination of sea water of designing for the deficiency that solves above-mentioned technology, can satisfy the requirement of desalination of sea water exhaust temperature.
The steam turbine that is used for desalination of sea water that the present invention designed; Comprise turbine rotor, steam inlet pipe, exhaust steam pipe, be positioned at admission modulating valve and the controller of control admission modulating valve work on the steam inlet pipe; Said exhaust steam pipe output connects sea water desalinating unit, also comprises exhaust steam pressure detection unit that is arranged on the exhaust steam pipe and the unit that tests the speed that detects the turbine rotor rotating speed; Described exhaust steam pressure detection unit inputs to said controller with the cell signal that tests the speed; The described unit that tests the speed, controller and admission modulating valve constitute a speed closed loop control system, and controller is regulated the admission modulating valve according to rotor speed; The pressure signal of said exhaust steam pressure detection unit and setting pressure signal contrast are handled the given signal of back as rotating speed, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.
As preferably:
Described steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve and extraction line, on extraction line, is provided with the extraction pressure detection unit, and extraction pressure detection unit signal inputs to said controller, the said low pressure modulating valve of controller output control; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Controller receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa;
Also supporting desuperheat water spray projector system and the decompression heating equipment of being provided with of described sea water desalinating unit;
Described extraction line connects sea water desalinating unit through the decompression heating equipment;
Described blow-off line is connected with a steam discharge flash chamber, and connects sea water desalinating unit through this steam discharge flash chamber; The steam discharge flash chamber rationally customizes volume size according to the turbine discharge amount, and is excessive with the steam flow rate of avoiding getting into extra large light device, and the light device in sea is caused damage, and the steam discharge flash chamber can adopt the rigidity mounting to be fixed on the basis.
Said steam turbine adopts reinforced blade and welding row cylinder; Reinforced blade can promote the ability to bear of exhaust stage blade, satisfyingly bears higher exhaust steam pressure; The steam turbine set exhaust temperature that is used for desalination of sea water is higher, and for the heat expansion of bearing high exhaust temperature and preventing to cause because of the temperature height drives unit vibration, unit preferably adopts welding row cylinder.
Said extraction line is provided with double wave expansion joint, non-return quick-closing valve and Direct spring loaded safety valve; Such pressure balance type can the compensating axial displacement, lateral displacement and press thrust in can not producing pipe-line system; Quick-closing valve, surplus vapour poured in down a chimney into steam turbine when Direct spring loaded safety valve can prevent removal of load.
The controlling method of the steam turbine that is used for desalination of sea water that the present invention designed comprises also comprising the step of controller control admission modulating valve work: the step of utilizing exhaust steam pressure detection exhaust steam pipe pressure;
The utilization unit that tests the speed detects the step of turbine rotor rotating speed;
Test the speed unit, controller and admission modulating valve constitutes a speed closed loop control system, and controller is regulated the admission modulating valve according to rotor speed; Said exhaust steam pressure detection unit signal inputs to controller, and handles the given signal of back as rotating speed with the setting pressure signal contrast, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.
As preferably:
Described steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve and extraction line, on extraction line, is provided with the extraction pressure detection unit, and extraction pressure detection unit signal inputs to said controller, the said low pressure modulating valve of controller output control; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Controller receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa;
In the time of outside exhaust temperature departs from the light temperature required scope in sea, adopt heating apparatus or desuperheat water spray projector system, extra large light temperature is controlled within the temperature required scope as auxiliary system work;
The steam turbine that is used for desalination of sea water of gained of the present invention and the beneficial effect of controlling method thereof are: when guaranteeing system stable operation; Realized the automatic control of exhaust temperature through a series of means; Can effectively satisfy the requirement of desalination of sea water, for desalination of sea water has been opened up new approaches with water power vapour coproduction steam turbine.
Description of drawings
Fig. 1 is embodiment 1 a structural representation;
Fig. 2 is embodiment 2 a structural representation;
Among the figure: turbine rotor 1, steam inlet pipe 2, exhaust steam pipe 3, admission modulating valve 4, controller 5, sea water desalinating unit 6, exhaust steam pressure detection unit 7, the unit 8 that tests the speed, low pressure modulating valve 9, extraction line 10, desuperheat water spray projector system 11, decompression heating equipment 12, electro-control converter 13, pressure transducer 14, extraction pressure detection unit signal 15.
Embodiment
Combine accompanying drawing that the present invention is done further description through embodiment below.
Embodiment 1:
As shown in Figure 1; The described steam turbine that is used for desalination of sea water of present embodiment; Comprise turbine rotor 1, steam inlet pipe 2, exhaust steam pipe 3, (the admission modulating valve is a hydrovalve to be positioned at admission modulating valve 4 and the controller 5 of control admission modulating valve 4 work on the steam inlet pipe 2; Controller is through electro-control converter 13 its work of control), said exhaust steam pipe 3 outputs connect sea water desalinating unit 6, also comprise exhaust steam pressure detection unit 7 that is arranged on the exhaust steam pipe 3 and the unit 8 that tests the speed that detects turbine rotor 1 rotating speed; Described exhaust steam pressure detection unit 7 inputs to said controller 5 with unit 8 signals that test the speed; The described unit 8 that tests the speed, controller 5 and admission modulating valve 4 constitute a speed closed loop control system, and controller 5 is regulated admission modulating valve 4 according to rotor speed; The pressure signal of said exhaust steam pressure detection unit 7 and setting pressure signal contrast are handled the given signal of back as rotating speed, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.Also supporting desuperheat water spray projector system 11 and the decompression heating equipment 12 of being provided with of described sea water desalinating unit 6; Described exhaust steam pipe 3 roads are connected with a steam discharge flash chamber, and connect sea water desalinating unit 6 through this steam discharge flash chamber; The steam discharge flash chamber rationally customizes volume size according to the turbine discharge amount, and is excessive with the steam flow rate of avoiding getting into extra large light device, and the light device in sea is caused damage, and the steam discharge flash chamber can adopt the rigidity mounting to be fixed on the basis.Said steam turbine adopts reinforced blade and welding row cylinder; Reinforced blade can promote the ability to bear of exhaust stage blade, satisfyingly bears higher exhaust steam pressure; The steam turbine set exhaust temperature that is used for desalination of sea water is higher, and for the heat expansion of bearing high exhaust temperature and preventing to cause because of the temperature height drives unit vibration, unit preferably adopts welding row cylinder.Said extraction line 10 is provided with double wave expansion joint, non-return quick-closing valve and Direct spring loaded safety valve; Such pressure balance type can the compensating axial displacement, lateral displacement and press thrust in can not producing pipe-line system; Quick-closing valve, surplus vapour poured in down a chimney into steam turbine when Direct spring loaded safety valve can prevent removal of load.
The described controlling method that is used for the steam turbine of desalination of sea water of present embodiment comprises the step that controller 5 control admission modulating valve 4 are worked, and also comprises: utilize exhaust steam pressure detection unit 7 to detect the step of exhaust steam pipes 3 pressure;
Test the speed unit 8 of utilization detects the step of turbine rotors 1 rotating speed;
Test the speed unit 8, controller 5 and admission modulating valve 4 constitutes a speed closed loop control system, and controller 5 is regulated admission modulating valve 4 according to rotor speed; Said exhaust steam pressure detection unit 7 signals input to controller 5, and handle the given signal of back as rotating speed with the setting pressure signal contrast, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.
In the time of outside exhaust temperature departs from the light temperature required scope in sea, adopt heating apparatus or desuperheat water spray projector system 11, extra large light temperature is controlled within the temperature required scope as auxiliary system work.
This steam turbine can not only provide the steam of equilibrium temperature to the light device in sea, has also extraly obtained a large amount of electric energy, has realized the maximum use of resource, reaches purpose of energy saving.For the new situation has been opened in effective combination of steam turbine and desalination of sea water.
Embodiment 2:
The described steam turbine that is used for desalination of sea water of present embodiment; Different with embodiment 1 is that steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve 9 and extraction line 10; On extraction line 10, be provided with the extraction pressure detection unit; Extraction pressure detection unit signal 15 inputs to said controller 5, the said low pressure modulating valve 9 of controller 5 output controls; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Controller receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa; Described extraction line 10 connects sea water desalinating unit 6 through decompression heating equipment 12.
The described controlling method that is used for the steam turbine of desalination of sea water of present embodiment; On embodiment 1 basis; Described steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve 9 and extraction line 10; On extraction line 10, be provided with the extraction pressure detection unit, extraction pressure detection unit signal inputs to said controller 5, the said low pressure modulating valve 9 of controller 5 output controls; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Controller receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa;
This steam turbine is principle according to designing with the fixed electric mode of vapour with the required vapour amount of afterbody seawater desalination system, accomplishes that in the steam turbine range of capacity generated energy is corresponding one by one with extra large light output, and can change thereupon.
Light high with steam turbine exhaust pressure because of the sea, with increasing than common water-cooled unit admission flow under the power, exhaust stage blade bears bigger flexure stress, so adopt the blade of variable cross-section (being reinforced blade) that reverses, carries out the calculating of runner and intensity, and carries out modelling.Can guarantee aerodynamic characteristics preferably like this, reduce the centrifugal force that root of blade bore, improve blade strength.
For guaranteeing to go the steam discharge connecting tube of extra large light device to be unlikely to equipment is caused damage at negative pressure condition lower stress and moment.Set up compound expansion joint and curved tube pressure balance type FlexbleJoint on the steam discharge connecting tube.This pressure balance type ability compensating axial displacement, lateral displacement, and press thrust in can not producing to pipe-line system.(with reference to figure four)
Unit is furnished with speed closed loop control system and two voltage-regulating systems, and speed closed loop control system and two voltage-regulating systems are formed a system and involved adjusting, and it is following specifically to control thinking:
Said admission modulating valve is connected with the signals of rotational speed sensor of two MEASUREMENT OF STEAM turbine wheel rotating speeds; This speed probe is regulated required tach signal for the admission modulating valve provides; The signal input controller of speed probe; The speed closed loop control system is formed in this controller control admission modulating valve work; The admission modulating valve also be arranged on exhaust casing on the exhaust steam pressure transducer signal be connected, the signal of this exhaust steam pressure transmitter is imported said controller and is formed the exhaust steam pressure regulating system, and control is integrated in the said speed closed loop control system as tandem.
During work; Main steam gets into the admission modulating valve; Controller receives two signals of rotational speed sensor and compares with speed setting value, and current signal is carried out in output, and this signal converts the secondary oil pressure to through the admission electro-control converter; The secondary oil pressure is handled the admission modulating valve through the admission hydraulic actuator, and this part is the speed closed loop control system.The exhaust steam pressure adjusting is controlled in the aforesaid speed closed loop control system as tandem and realizes; Controller is relatively exported the control current signal in the back with exhaust steam pressure transducer signal that receives and pressure set points, and this signal is as the aperture of the given SC sigmal control admission modulating valve of rotating speed control.When raising like exhaust steam pressure, controller receives the signal and the setting value of exhaust steam pressure rising and relatively exports the control current signal in the back, and admission modulating valve 3 turns down, and exhaust steam pressure is got back to setting value; Otherwise when exhaust steam pressure reduced, controller received the signal and the setting value of exhaust steam pressure reduction and relatively exports the control current signal in the back, and the admission modulating valve is opened greatly, and exhaust steam pressure is got back to setting value.Hydraulic circuit control techniques such as the electro-control converter that relates in the present embodiment are this field routine techniques, do not add tired stating at this.
In like manner, the unit that draws gas in the legend can be provided with the extraction pressure transmitter and controls low pressure and regulate steam valve on extraction line.The signal of this extraction pressure transmitter is imported said controller and is formed the extraction pressure regulating system; And be integrated in the speed closed loop control system of above-mentioned integrated exhaust steam pressure regulating system, the coordination that admission modulating valve and low pressure are regulated between the steam valve is realized by controller.As the quantitative change of drawing gas is big and when guaranteeing that exhaust steam pressure is constant, extraction pressure reduces, and exhaust steam pressure reduces simultaneously; Controller receives the signal of extraction pressure and exhaust steam pressure reduction; Relatively export the control current signal in the back with setting value respectively, the admission modulating valve is opened greatly, and low pressure is regulated steam valve and turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move; Vice versa.As increase displacement and when guaranteeing that extraction pressure is constant, then admission modulating valve and low pressure are regulated steam valve and are all opened greatly; Vice versa.
To the unit that draws gas, surplus vapour pours in down a chimney into steam turbine when preventing removal of load, sets up non-return quick-closing valve, Direct spring loaded safety valve on the pipeline, to guarantee the safe operation of unit.
In order to guarantee the stability of exhaust temperature, this control system also is provided with a cover heating apparatus and a cover desuperheat water spray projector system as auxiliary system, and exhaust temperature exports after judging that SC sigmal control is heated and Desuperheating device work.In the time of outside exhaust temperature departs from the light temperature required scope in sea, can drop into two covering devices accordingly, so that extra large light temperature is strict controlled within the scope of requirement.
Claims (10)
1. steam turbine that is used for desalination of sea water; Comprise turbine rotor, steam inlet pipe, exhaust steam pipe, be positioned at admission modulating valve and the controller of control admission modulating valve work on the steam inlet pipe; Said exhaust steam pipe output connects sea water desalinating unit, it is characterized in that also comprising exhaust steam pressure detection unit that is arranged on the exhaust steam pipe and the unit that tests the speed that detects the turbine rotor rotating speed; Described exhaust steam pressure detection unit inputs to said controller with the cell signal that tests the speed; The described unit that tests the speed, controller and admission modulating valve constitute a speed closed loop control system, and controller is regulated the admission modulating valve according to rotor speed; The pressure signal of said exhaust steam pressure detection unit and setting pressure signal contrast are handled the given signal of back as rotating speed, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.
2. the steam turbine that is used for desalination of sea water according to claim 1; It is characterized in that described steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve and extraction line; On extraction line, be provided with the extraction pressure detection unit; Extraction pressure detection unit signal inputs to said controller, the said low pressure modulating valve of controller output control; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Control unit receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa.
3. the steam turbine that is used for desalination of sea water according to claim 2 is characterized in that also supporting desuperheat water spray projector system and the decompression heating equipment of being provided with of described sea water desalinating unit.
4. the steam turbine that is used for desalination of sea water according to claim 3 is characterized in that described extraction line connects sea water desalinating unit through the decompression heating equipment.
5. according to claim 1 or 2 or the 3 or 4 described steam turbine that are used for desalination of sea water, it is characterized in that described blow-off line is connected with a steam discharge flash chamber, and connect sea water desalinating unit through this steam discharge flash chamber.
6. the steam turbine that is used for desalination of sea water according to claim 5 is characterized in that said steam turbine adopts reinforced blade and welding row cylinder.
7. the steam turbine that is used for desalination of sea water according to claim 5 is characterized in that said extraction line is provided with double wave expansion joint, non-return quick-closing valve and Direct spring loaded safety valve.
8. controlling method that is used for the steam turbine of desalination of sea water as claimed in claim 1 comprises it is characterized in that the step of controller control admission modulating valve work also comprising:
Utilize the step of exhaust steam pressure detection exhaust steam pipe pressure;
The utilization unit that tests the speed detects the step of turbine rotor rotating speed;
Test the speed unit, controller and admission modulating valve constitutes a speed closed loop control system, and controller is regulated the admission modulating valve according to rotor speed; Said exhaust steam pressure detection unit signal inputs to controller, and handles the given signal of back as rotating speed with the setting pressure signal contrast, and control is integrated in the said speed closed loop control system as tandem with this pressure control thus.
9. controlling method according to claim 8; It is characterized in that described steam turbine comprises that inter-stage is provided with the extraction stage group of low pressure modulating valve and extraction line; On extraction line, be provided with the extraction pressure detection unit; Extraction pressure detection unit signal inputs to said controller, the said low pressure modulating valve of controller output control; When the quantitative change of drawing gas guaranteed that exhaust steam pressure is constant greatly, extraction pressure reduced, and exhaust steam pressure reduces simultaneously; Control unit receives the signal of extraction pressure and exhaust steam pressure reduction, relatively exports the control current signal in the back with setting value respectively, and the admission modulating valve is opened greatly; Low pressure is regulated steam valve and is turned down; Get back to setting value up to extraction pressure and exhaust steam pressure, transfer valve no longer to move, vice versa; When guaranteeing that when increasing displacement extraction pressure is constant, then admission modulating valve and low pressure adjusting steam valve is all opened greatly, and vice versa.
10. controlling method according to claim 9 when it is characterized in that outside exhaust temperature departs from the light temperature required scope in sea, adopts heating apparatus or desuperheat water spray projector system as auxiliary system work, and extra large light temperature is controlled within the temperature required scope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110443981.3A CN102518478B (en) | 2011-12-27 | 2011-12-27 | For steam turbine and the controlling method thereof of desalination of sea water |
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| CN201110443981.3A CN102518478B (en) | 2011-12-27 | 2011-12-27 | For steam turbine and the controlling method thereof of desalination of sea water |
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| CN102518478B CN102518478B (en) | 2015-09-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103195503A (en) * | 2013-04-16 | 2013-07-10 | 北京首钢国际工程技术有限公司 | Steam turbine regulating system applicable to low-temperature multi-effect seawater desalination system |
| CN103195523A (en) * | 2013-04-09 | 2013-07-10 | 云南丰普科技有限公司 | Condensing steam turbine with adjustable steam discharging pressure |
| CN103573305A (en) * | 2012-07-31 | 2014-02-12 | 株式会社东芝 | Steam turbine plant and control method and control system thereof |
| CN108279713A (en) * | 2018-03-14 | 2018-07-13 | 西安交通大学 | Organic working medium geothermal power generation coordinated control system based on microprocessor and method |
| CN114635762A (en) * | 2022-02-23 | 2022-06-17 | 杭州汽轮机股份有限公司 | Emergency shutdown system of negative-pressure steam-admission condensing steam turbine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103573305A (en) * | 2012-07-31 | 2014-02-12 | 株式会社东芝 | Steam turbine plant and control method and control system thereof |
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| CN108279713A (en) * | 2018-03-14 | 2018-07-13 | 西安交通大学 | Organic working medium geothermal power generation coordinated control system based on microprocessor and method |
| CN114635762A (en) * | 2022-02-23 | 2022-06-17 | 杭州汽轮机股份有限公司 | Emergency shutdown system of negative-pressure steam-admission condensing steam turbine |
| CN114635762B (en) * | 2022-02-23 | 2024-03-29 | 杭州汽轮动力集团股份有限公司 | Emergency shutdown system of negative pressure steam inlet condensing steam turbine |
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| CN102518478B (en) | 2015-09-23 |
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Address after: 310018, No. 22, No. 18, Xiasha economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: Hangzhou Zhongneng Turbine Machinery Equipment Co.,Ltd. Country or region after: China Address before: 310018, No. 22, No. 18, Xiasha economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU CHINEN STEAM TURBINE POWER CO.,LTD. Country or region before: China |