CN202810972U - Steam turbine system and pre-heating system thereof - Google Patents
Steam turbine system and pre-heating system thereof Download PDFInfo
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- CN202810972U CN202810972U CN 201220506482 CN201220506482U CN202810972U CN 202810972 U CN202810972 U CN 202810972U CN 201220506482 CN201220506482 CN 201220506482 CN 201220506482 U CN201220506482 U CN 201220506482U CN 202810972 U CN202810972 U CN 202810972U
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Abstract
The utility model discloses a pre-heating system of a steam turbine system. The pre-heating system of the steam turbine system comprises a first pre-heating steam pipeline provided with a first connecting end and a second connecting end, wherein the first connecting end is communicated with the steam turbine, and the second connecting end is communicated with an auxiliary steam header. At the same time, the utility model further discloses a steam turbine system which comprises the pre-heating system of the steam turbine system. The steam turbine system and the pre-heating system of the steam turbine system can improve the economical efficiency of a generator set.
Description
Technical field
The utility model relates to the steam turbine field, particularly relates to a kind of turbine system and pre-warming system thereof.
Background technique
The temperature of high-pressure cylinder was just divided cold start and hot starting, hot start before the Starting mode of steam turbine power generation unit started according to steam turbine.High-pressure cylinder first order cylinder temperature is lower than 150 ℃, then is cold start.
When adopting the cold start mode, before the steam turbine red switch, need high-pressure cylinder is carried out pre-warm, in order to prevent owing to cause cylinder deformation inhomogeneous owing to temperature variation is excessive in the steam turbine start-up course.The temperature that the steam turbine high-pressure cylinder preheating need to reach is 220-250 ℃, and keeps the degree of superheat more than 28 ℃.
Please referring to Fig. 1, Fig. 1 is the structural representation of a kind of steam turbine pre-warming system in the prior art.
Produce the steam satisfy the pre-warm requirement after the ignition of the boiler, this steam via be connected with hp by-pass system high other after pipeline 01, with the caliduct 02 that high other rear pipeline 01 is connected, enter at last the high-pressure cylinder of steam turbine 03, high-pressure cylinder is carried out pre-warm.
In the prior art, before steam turbine 03 red switch, boiler need to be lighted a fire, and the steam that boiler is produced satisfies the needed temperature and pressure of steam turbine 03 pre-warm, require the condition of pre-warm steam to be such as certain steam turbine: pressure is not less than 0.7MP, and enthalpy is 2700-3000kJ/kg.Then the steam that utilizes boiler to produce carries out pre-warm to high-pressure cylinder, makes high-pressure cylinder reach the red switch requirement.High-pressure cylinder is being carried out in the process of pre-warm, needing to guarantee that the steam that boiler produces maintains the required requirement of pre-warm all the time.
But because the high pressure cylinder pre-warming of steam turbine 03 is needed chronic, this is just so that boiler maintains the chronic of the needed combustion regime of pre-warm, and during this period of time boiler 03 is understood consume fuel, affects the Economy of generator set.
Therefore, how a kind of turbine system and pre-warming system thereof being set, improving the Economy of generator set, is the problem that those skilled in the art need to solve.
The model utility content
The purpose of this utility model provides a kind of turbine system and pre-warming system thereof, can improve the Economy of generator set.
A kind of steam turbine pre-warming system provided by the utility model comprises the first pre-warm steam line that is provided with the first connecting end and the second connecting end, and described the first connecting end is connected with described steam turbine, and described the second connecting end is connected with the auxiliary steam header.
Preferably, also comprise an end and high other after pipeline be connected, the other end be connected with described steam turbine the second pre-warm steam line, described the first connecting end is connected with described the second pre-warm steam line.
Preferably, described auxiliary steam header is connected with the shaft seal steam pipeline, and described the second connecting end is connected with described shaft seal steam pipeline.
Preferably, also comprise the first control valve, described the first control valve is arranged at described the first pre-warm steam line.
Preferably, also comprise check valve, described check valve is arranged at described the first pre-warm steam line.
Preferably, described the second pre-warm steam line is provided with the second control valve.
Preferably, described shaft seal steam install pipeline has the 3rd control valve.
Preferably, also comprise three-way pipe, described the first connecting end is connected with described shaft seal steam pipeline by described three-way pipe, is connected with described caliduct simultaneously.
Simultaneously, the utility model also provides a kind of turbine system, comprises the Auxiliary Steam of steam turbine, also comprises steam turbine pre-warming system as indicated above.
The utility model provides a kind of steam turbine pre-warming system, comprises the first pre-warm steam line that is provided with the first connecting end and the second connecting end, and the first connecting end is connected with steam turbine, and the second connecting end is connected with the auxiliary steam header.So arrange, by the adjusting to the auxiliary steam header, the auxiliary steam that the auxiliary steam header is provided reaches the needed condition of pre-warm, utilize the first pre-warm steam line that is connected with the auxiliary steam header, the steam that satisfies the pre-warm condition is delivered to the high-pressure cylinder of steam turbine, high-pressure cylinder is carried out pre-warm.After the condition in the high-pressure cylinder satisfies the condition of red switch, boiler direct ignition, and the requirement that the steam that boiler is carried directly reaches red switch gets final product.
Compared with prior art, do not need to utilize the steam that produces in the boiler that steam turbine is carried out pre-warm, but the steam that utilizes the auxiliary steam header to provide carries out pre-warm to steam turbine, the steam that the auxiliary steam header provides is mainly derived from via the high temperature and high pressure steam that discharges after other operational outfit utilizations, the high temperature and high pressure steam of other equipment exhaustings is fully used, and in the pre-warm process, boiler does not need igniting, therefore, can save within the needed time of pre-warm, keep the needed fuel of boiler combustion status, and then can improve the Economy of generator set.
A kind of preferred embodiment in, also comprise the second pre-warm steam line, the second pre-warm steam line one end is connected with high other rear pipeline, and the other end is connected with steam turbine, and the second connecting end of the first pre-warm steam line is connected with the second pre-warm steam line.The steam that satisfies the pre-warm condition that produces after the ignition of the boiler can be delivered to the second pre-warm steam line via high other rear pipeline, enters steam turbine via the second pre-warm steam line, and steam turbine is carried out pre-warm.So arrange, when the first pre-warm steam line stops up or overhaul, can carry the pre-warm steam that satisfies condition to steam turbine by the second pre-warm steam line.
A kind of preferred embodiment in, described auxiliary steam header is connected with the shaft seal steam pipeline, described the second connecting end is connected with described shaft seal steam pipeline.So arrange, because the shaft seal steam pipeline is connected with the gland seal system of steam turbine, the first pre-warm steam line is connected with the shaft seal steam pipeline, compare with the pipeline that the auxiliary steam header is connected with other, can shorten the length of the first pre-warm steam line, easy for installation, be convenient to safeguard.
Simultaneously, the utility model also provides a kind of turbine system, comprises steam turbine pre-warming system as indicated above.The process that the beneficial effect of the derivation of its beneficial effect and steam turbine pre-warming system is derived is similar, so just repeated no more in this article.
Description of drawings
Fig. 1 is the structural representation of a kind of steam turbine pre-warming system in the prior art.
Fig. 2 is the structural representation of the steam turbine pre-warming system in a kind of embodiment provided by the utility model;
Wherein, among Fig. 1:
High other rear pipeline 01, caliduct 02, steam turbine 03;
Among Fig. 2:
High other rear pipeline 11, the first pre-warm steam line 12, the second pre-warm steam line 13, auxiliary steam header 14, shaft seal steam pipeline 15, steam turbine 16, gland seal system 17, the first control valve 18, check valve 19, the second control valves 110.
Embodiment
Core of the present utility model provides a kind of turbine system and pre-warming system thereof, can improve the Economy of generator set.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 2 is the structural representation of the steam turbine pre-warming system in a kind of embodiment provided by the utility model.
Steam turbine pre-warming system in this embodiment, comprise the first pre-warm steam line 12 that is provided with the first connecting end (not indicating among the figure) and the second connecting end (not indicating among the figure), the first connecting end (not indicating among the figure) is connected with steam turbine 16, and the second connecting end (not indicating among the figure) is connected with auxiliary steam header 14.
The steam that auxiliary steam header 14 provides is mainly derived from the high temperature and high pressure steam that other operational outfits discharge, by the adjusting to auxiliary steam header 14, the steam that the auxiliary steam header is provided reaches the needed condition of steam turbine 16 pre-warms, utilize the first pre-warm steam line 12 that is communicated with the auxiliary steam header, the steam that satisfies the pre-warm condition is delivered to steam turbine 16, the high-pressure cylinder of steam turbine 16 is carried out pre-warm.After the condition in the high-pressure cylinder satisfies the condition of red switch, boiler direct ignition, and the steam that boiler is carried directly reaches the requirement of red switch, and then via conveyance conduit the steam that boiler produces is sent to steam turbine 16, carry out red switch.
Compared with prior art, do not need to utilize the steam that produces in the boiler that steam turbine 16 is carried out pre-warm, but the steam that utilizes auxiliary steam header 14 to provide carries out pre-warm to steam turbine, the high temperature and high pressure steam of other equipment exhaustings is fully used, and in the pre-warm process, boiler does not need igniting, therefore, can save within the needed time of pre-warm, keep the needed fuel of boiler combustion status, and then can improve the Economy of generator set.
In addition, in this embodiment, comprise that also the second pre-warm steam line 13, the second pre-warm steam lines 13 1 ends are connected with high other rear pipeline 11, the other end is connected with steam turbine 16, and the second connecting end of the first pre-warm steam line 12 is connected with the second pre-warm steam line 13.
So, the steam that satisfies the pre-warm condition that produces after the ignition of the boiler can be delivered to the second pre-warm steam line 13 via high other rear pipeline 11, enters steam turbine 16 via the second pre-warm steam line 13, and steam turbine 16 is carried out pre-warm.When the first pre-warm steam line 12 stops up or overhauls, can carry the pre-warm steam that satisfies condition to steam turbine by the second pre-warm steam line 13, guarantee that unit can normally move.
Need to prove, to the definition of the first connecting end of the first pre-warm steam line 12 and the second connecting end just for convenience of description, the end that the first pre-warm steam line 12 is connected with steam turbine 16 is the first connecting end, the other end is connected with auxiliary steam header 14, is the second connecting end.
In this embodiment, the first pre-warm steam line 12 is connected with shaft seal steam pipeline 15, and shaft seal steam pipeline 15 is connected with auxiliary steam header 14.Because shaft seal steam pipeline 15 is the shaft seal steams to steam turbine 16, second connecting end (not indicating among the figure) of the first pre-warm steam line 12 is connected with shaft seal steam pipeline 15, can shorten the length of the first pre-warm steam line 12, easy for installation, be convenient to safeguard.
Need to prove, the connection mouth position of the first pre-warm steam line 12 and shaft seal steam pipeline 15, should be unable to the normal use of shaft seal steam pipeline 15 be exerted an influence, as being arranged at vertical section of the place ahead, desuperheater position on the shaft seal steam pipeline, the place ahead refers to that steam comes flow path direction in the pipeline, certainly, also can connection mouth be arranged at according to the PRODUCTION STATUS of reality other position.
For the steam that guarantees auxiliary steam header 14 when other the working state, can not enter the first pre-warm steam line 12, can also the first control valve 18 be set the first pre-warm steam line 12.When auxiliary steam header 14 is in when providing the working state of pre-warm steam to steam turbine 16, the first control valve 18 is opened, the auxiliary steam that meets the demands in the shaft seal steam pipeline 15 enters steam turbine 16 by the first pre-warm steam line 12, and steam turbine 16 is carried out pre-warm; When auxiliary steam header 14 was in other working staties, the first control valve 18 was closed, and can avoid like this affects the normal PRODUCTION STATUS of steam turbine because other control valve faults cause having steam to enter the first pre-warm steam line 12.
In addition, can also the second control valve 110 be set at the second pre-warm steam line 13, when auxiliary steam header 14 can not provide pre-warm steam to steam turbine 16, the first control valve 18 is closed, the second control valve 110 is opened, and the steam that produces after being lighted a fire by boiler 11 carries out pre-warm via high other rear pipeline 11,13 pairs of steam turbine of the second pre-warm steam line 16.
Certainly, the hotter cold section steam of boiler flows backwards via the first pre-warm steam line 12 and enters shaft seal steam pipeline 15 in order to prevent from moving, and can also check valve 19 be set at the first pre-warm steam line 12.
Need to prove, in this embodiment, check valve 19 is arranged between the joint of the first control valve 18 and the first pre-warm steam line 12 and shaft seal steam pipeline 15, certainly, also can be as required, check valve 19 is arranged at other position, such as the back of the first control valve 18, the back refer to pipeline in steam come flow path direction.
In addition, can also the 3rd control valve (indicating among the figure) be set at shaft seal steam pipeline 15, the 3rd control valve (indicating among the figure) is arranged at the rear of the connection mouth of the first pre-warm steam line 12 and shaft seal steam pipeline 15.When being in pre-warm during the stage, the 3rd control valve (not indicating among the figure) is closed; When auxiliary steam header 14 need to be to gland seal system 17 steam supply, the 3rd control valve (indicating among the figure) was opened.
Need to prove, the first control valve 18 of above mentioning, check valve 19, the second control valve 110 and the 3rd control valve (not indicating among the figure) all are and being connected that master control system can be communicated by letter, can directly control above-mentioned valve in the control room, make it to be in the working state that needs.Certainly, do not get rid of other valve according to the PRODUCTION STATUS of reality yet and adopt manually control.
For the ease of installing, the first pre-warm steam line 12 is connected with shaft seal steam pipeline 15 by three-way pipe (not indicating among the figure).
Need to prove, in this embodiment, adopted three-way pipe (not indicating among the figure) that the first pre-warm steam line 12 is connected with shaft seal steam pipeline 15, the sealing of three-way pipe (among the figure indicate) is to satisfy the seal request of steam line, certainly, also can adopt other Placement according to practical condition, as the welding etc.
In addition, this embodiment also provides a kind of turbine system, comprises steam turbine pre-warming system as described above.Hereinbefore the steam turbine pre-warming system is described in detail, so just repeated no more in this article.
More than be described in detail provided by the utility model.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. steam turbine pre-warming system, it is characterized in that, comprise the first pre-warm steam line (12) that is provided with the first connecting end and the second connecting end, described the first connecting end is connected with described steam turbine (16), and described the second connecting end is connected with auxiliary steam header (14).
2. steam turbine pre-warming system according to claim 1, it is characterized in that, comprise that also an end is connected with high other rear pipeline (11), the other end be connected with described steam turbine (16) the second pre-warm steam line (13), described the first connecting end is connected with described the second pre-warm steam line (13).
3. steam turbine pre-warming system according to claim 1 is characterized in that, described auxiliary steam header (14) is connected with shaft seal steam pipeline (15), and described the second connecting end is connected with described shaft seal steam pipeline (15).
4. steam turbine pre-warming system according to claim 2 is characterized in that, also comprises the first control valve (18), and described the first control valve (18) is arranged at described the first pre-warm steam line (12).
5. steam turbine pre-warming system according to claim 4 is characterized in that, also comprises check valve (19), and described check valve (19) is arranged at described the first pre-warm steam line (13).
6. steam turbine pre-warming system according to claim 3 is characterized in that, described the second pre-warm steam line (12) is provided with the second control valve (110).
7. steam turbine pre-warming system according to claim 3 is characterized in that, described shaft seal steam pipeline (15) is provided with the 3rd control valve.
8. steam turbine pre-warming system according to claim 3 is characterized in that, also comprises three-way pipe, and described the first connecting end is connected with described shaft seal steam pipeline (15) by described three-way pipe.
9. a turbine system is characterized in that, comprises such as arbitrary described steam turbine pre-warming system of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506482 CN202810972U (en) | 2012-09-27 | 2012-09-27 | Steam turbine system and pre-heating system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506482 CN202810972U (en) | 2012-09-27 | 2012-09-27 | Steam turbine system and pre-heating system thereof |
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| Publication Number | Publication Date |
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| CN202810972U true CN202810972U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220506482 Expired - Lifetime CN202810972U (en) | 2012-09-27 | 2012-09-27 | Steam turbine system and pre-heating system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437835A (en) * | 2013-08-29 | 2013-12-11 | 中国神华能源股份有限公司 | Device and method for conducting high pressure cylinder warming on gas-steam combined cycle unit |
| CN105221191A (en) * | 2015-11-10 | 2016-01-06 | 四川东方电气自动控制工程有限公司 | A kind of steam turbine valve pre-warming system and controlling method thereof |
| WO2016062532A1 (en) * | 2014-10-23 | 2016-04-28 | Siemens Aktiengesellschaft | Method for shortening the start-up process of a steam turbine |
-
2012
- 2012-09-27 CN CN 201220506482 patent/CN202810972U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437835A (en) * | 2013-08-29 | 2013-12-11 | 中国神华能源股份有限公司 | Device and method for conducting high pressure cylinder warming on gas-steam combined cycle unit |
| WO2016062532A1 (en) * | 2014-10-23 | 2016-04-28 | Siemens Aktiengesellschaft | Method for shortening the start-up process of a steam turbine |
| CN105221191A (en) * | 2015-11-10 | 2016-01-06 | 四川东方电气自动控制工程有限公司 | A kind of steam turbine valve pre-warming system and controlling method thereof |
| CN105221191B (en) * | 2015-11-10 | 2017-03-15 | 四川东方电气自动控制工程有限公司 | A kind of steam turbine valve pre-warming system and its control method |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130320 |
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