CN104763480A - Organic Rankine cycle power generation turbine unit with dynamic oil film sealing system and sealing control method - Google Patents
Organic Rankine cycle power generation turbine unit with dynamic oil film sealing system and sealing control method Download PDFInfo
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- CN104763480A CN104763480A CN201510139546.XA CN201510139546A CN104763480A CN 104763480 A CN104763480 A CN 104763480A CN 201510139546 A CN201510139546 A CN 201510139546A CN 104763480 A CN104763480 A CN 104763480A
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Abstract
The invention relates to an organic Rankine cycle power generation turbine unit with a dynamic oil film sealing system and a sealing control method. The turbine unit comprises an evaporator, a turbine and the dynamic oil film sealing system; the sealing system comprises a controller, an oil tank, an oil pump, a connecting pipe and an evaporator outlet pressure transmitter used for sealing control, and three pressure transmitters located on the turbine; the controller is connected with the four pressure transmitters through controller input pipes; the controller is further connected with the oil pump; the oil pump is respectively connected with the three pressure transmitters on the turbine through sealing oil pipes. The sealing control method includes that the pressure transmitters output sealing signals, the controller receives sealing signals, the controller commands the oil pump to regulate pressure, and the dynamic oil film sealing is performed. The organic Rankine cycle power generation turbine unit with the dynamic oil film sealing system and the sealing control method have advantages that the organic working medium turbine realizes zero leakage, the economic loss due to large-scale working medium leakage is avoided, and the organic Rankine cycle power generation turbine unit runs effectively, economically, safely and reliably.
Description
Technical field
The present invention relates to a kind of organic Rankine bottoming cycle electric turbine group and the sealing control method with dynamic oil film sealing system, belong to Rankine cycle electric turbine technical field.
Background technique
Organic Rankine bottoming cycle (be called for short ORC) generation technology with low-boiling-point organic compounds such as halogenated hydrocarbon (CFCs), HCFC (HCFCs), hydrogen fluorohydrocarbon (HFCs), alkane (HCs) for working medium, various types of low-grade energies such as recoverable industrial exhaust heat, solar energy, geothermal power, biomass energy, ocean thermal energy and LNG cold energy are used for generating, and it has, and structure is simple, efficiency is high, environmental friendliness and the advantage such as load performance is strong.At present, there is organic working medium Turbine seal leakage problem in this technology.
Summary of the invention
The present invention its object is to: overcome the seal leakage problem that prior art organic working medium steam turbine exists, a kind of organic Rankine bottoming cycle electric turbine group and the sealing control method with dynamic oil film sealing system are provided, realize the zero leakage of organic working medium steam turbine, prevent working medium from leaking the economic loss caused on a large scale, make that organic Rankine bottoming cycle electric turbine group is efficient, economical, safety, reliably to run.
The technological scheme with the organic Rankine bottoming cycle electric turbine group of dynamic oil film sealing system of the present invention is:
There is an organic Rankine bottoming cycle electric turbine group for dynamic oil film sealing system, comprise vaporizer, steam turbine and dynamic oil film sealing system; Described dynamic oil film sealing system comprises controller, fuel tank, oil pump and for the connecting tube that seals control and several pressure transmitters; Described pressure transmitter comprises evaporator exit pressure transmitter, be positioned at steam turbine before regulating valve rod place steam turbine first pressure transmitter, be positioned at steam turbine second pressure transmitter steam turbine axle head stationary ring being right against spiral chute groove root place and steam turbine the 3rd pressure transmitter being positioned at Turbine seal top of chamber; Controller side is connected with evaporator exit pressure transmitter and steam turbine first pressure transmitter respectively by controller supplying tube, and another is then connected with steam turbine second pressure transmitter and steam turbine the 3rd pressure transmitter respectively by controller supplying tube; Controller is also connected with oil pump by controller output tube; This oil pump by sealing oil pipe respectively with steam turbine first pressure transmitter, steam turbine second pressure transmitter and steam turbine the 3rd pressure transmitter be connected.
Further technological scheme is:
The described organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system, the model specification of its oil pump is JRDB0.55, and be selected from factory of Taizhou City Jie Rui Machinery Manufacturing Co., Ltd. and produce, working pressure is 0.5mpa ~ 2mpa.
The described organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system, the model specification of its pressure transmitter is 308F I ERI, and be selected from company of Shanghai instrument (group) factory and produce, working pressure is 0 ~ 2mpa.
The described organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system, the model specification of its controller is S314, is selected from factory of Siemens and produces.
The technological scheme of organic Rankine bottoming cycle electric turbine group sealing control method of the present invention is: it comprises the steps:
A, pressure transmitter export sealing signal: export the command signal of sealing load variation tendency by evaporator exit pressure transmitter and steam turbine first, second, third pressure transmitter to controller;
B, controller receive sealing signal: the command signal being accepted the sealing load variation tendency transmitted from the via controller supplying tube of pressure transmitter by controller;
C, controller instruction oil pump regulate pressure: controller makes it equal with the pressure in Seal cage according to the command signal of sealing load variation tendency, and instruction oil pump exports revised sealing load oil;
D, dynamic oil film seal: revised sealing load oil reaches steam turbine first, second, third pressure transmitter respectively by sealing oil pipe, thus makes sealing zero leakage, realizes the sealing of steam turbine dynamic oil film.
Working principle of the present invention is as follows
Sealing oil pipeline: the sealing oil of fuel tank by oil pump, is supplied to regulating valve rod sealing place before steam turbine, steam turbine front end bearing seal place and sealing place of steam turbine rear end bearing by sealing oil respectively.
Controller inputs: four pressure datas of evaporator exit pressure transmitter, the steam turbine first pressure transmitter pressure transmitter of regulating valve rod place (before the steam turbine), steam turbine second pressure transmitter (steam turbine axle head stationary ring being right against the pressure transmitter at spiral chute groove root place), steam turbine the 3rd pressure transmitter (pressure transmitter at Seal cage top) transfer to controller.
Controller exports: controller output signal directly reaches oil pump.
Four pressure datas inputted by controller, the trend output command signal changed according to pressure by controller, the pressure of oil pump is regulated again according to this signal, the pressure of regulating valve rod sealing place before Turbine seal place and steam turbine is affected by the change of oil pump 7 pressure, make it equal with the pressure in Seal cage, realize sealing zero leakage.
Significant beneficial effect of the present invention is mainly: the zero leakage achieving organic working medium steam turbine, prevents working medium to leak the economic loss caused on a large scale, makes that organic Rankine bottoming cycle electric turbine group is efficient, economical, safety, reliably to run.
Accompanying drawing explanation
Fig. 1 is the organic Rankine bottoming cycle electric turbine group structural representation with dynamic oil film sealing system of the present invention.
Fig. 2 is the schematic flow sheet of organic Rankine bottoming cycle electric turbine group sealing control method of the present invention.
In figure: 1-vaporizer, 2-evaporator exit pressure transmitter, the 3-steam turbine first pressure transmitter pressure transmitter of regulating valve rod place (before the steam turbine), 4-turbine governor valve, 5-controller, 5.1-controller supplying tube, 5.2-controller supplying tube, 5.3-controller output tube, 5.4-sealing oil pipe, 6-fuel tank, 7-oil pump, 8-steam turbine second pressure transmitter (steam turbine axle head stationary ring being right against the pressure transmitter at spiral chute groove root place), 9-steam turbine the 3rd pressure transmitter (pressure transmitter at Seal cage top), 10-steam turbine, 10.1-steam turbine axle head, 10.2-Turbine seal top of chamber, 11-generator.
Embodiment
To the present invention, there is the organic Rankine bottoming cycle electric turbine group of dynamic oil film sealing system in conjunction with the accompanying drawings and embodiments and sealing control method is described further as follows:
As shown in Figure 1, be an embodiment of organic Rankine bottoming cycle electric turbine group of the present invention.There is an organic Rankine bottoming cycle electric turbine group for dynamic oil film sealing system, comprise vaporizer 1, steam turbine 10 and dynamic oil film sealing system; Described dynamic oil film sealing system comprises controller 5, fuel tank 6, oil pump 7 and for the connecting tube that seals control and several pressure transmitters; Described pressure transmitter comprises evaporator exit pressure transmitter 2, be positioned at steam turbine before modulating valve 4 valve rod place steam turbine first pressure transmitter 3, be positioned at steam turbine second pressure transmitter 8 steam turbine axle head 10.1 stationary ring being right against spiral chute groove root place and steam turbine the 3rd pressure transmitter 9 being positioned at Turbine seal top of chamber 10.2; Controller 5 side is connected with evaporator exit pressure transmitter 2 and steam turbine first pressure transmitter 3 respectively by controller supplying tube 5.1, and another is then connected with steam turbine second pressure transmitter 8 and steam turbine the 3rd pressure transmitter 9 respectively by controller supplying tube 5.2; Controller 5 is also connected with oil pump 7 by controller output tube 5.3; This oil pump 7 is connected with steam turbine first pressure transmitter 3, steam turbine second pressure transmitter 8 and steam turbine the 3rd pressure transmitter 9 respectively by sealing oil pipe 5.4; Fuel tank 6 is connected with oil pump 7; Evaporator exit pressure transmitter 2, steam turbine first pressure transmitter 3, steam turbine second pressure transmitter 8 and steam turbine the 3rd pressure transmitter 9 are also connected with controller 5 by electric wire, and this controller 5 is connected with oil pump 7 by electric wire.The model specification of described oil pump 7 is JRDB0.55, and be selected from factory of Taizhou City Jie Rui Machinery Manufacturing Co., Ltd. and produce, working pressure is 0.5mpa ~ 2mpa.The model specification of described pressure transmitter 3 is 308F I ERI, and be selected from factory of Shanghai instrument (group) company and produce, working pressure is 0 ~ 2mpa.The model specification of described controller 5 is S314, is selected from factory of Siemens and produces.
As shown in Figure 2, be an embodiment of organic Rankine bottoming cycle electric turbine group sealing control method of the present invention.Organic Rankine bottoming cycle electric turbine group sealing control method of the present invention it comprise the steps:
A, pressure transmitter export sealing signal: the command signal being exported sealing load variation tendency by evaporator exit pressure transmitter 2 and steam turbine first, second, third pressure transmitter 3,8,9 to controller 5;
B, controller receive sealing signal: the command signal being accepted the sealing load variation tendency transmitted from the via controller supplying tube 5.1,5.2 of pressure transmitter by controller 5;
C, controller instruction oil pump regulate pressure: controller 5 makes it equal with the pressure in Seal cage according to the command signal of sealing load variation tendency, and instruction oil pump 7 exports revised sealing load oil;
D, dynamic oil film seal: revised sealing load oil reaches steam turbine first, second, third pressure transmitter 3,8,9 respectively by sealing oil pipe 5.4, thus makes sealing zero leakage, realizes the sealing of steam turbine 10 dynamic oil film.
The claims in the present invention protection domain is not limited to above-described embodiment.
Claims (5)
1. there is an organic Rankine bottoming cycle electric turbine group for dynamic oil film sealing system, it is characterized in that, comprise vaporizer (1), steam turbine (10) and dynamic oil film sealing system; Described dynamic oil film sealing system comprises controller (5), fuel tank (6), oil pump (7) and for the connecting tube that seals control and several pressure transmitters; Described pressure transmitter comprises evaporator exit pressure transmitter (2), be positioned at steam turbine before modulating valve (4) valve rod place steam turbine first pressure transmitter (3), be positioned at steam turbine second pressure transmitter (8) steam turbine axle head (10.1) stationary ring being right against spiral chute groove root place and the steam turbine the 3rd pressure transmitter (9) being positioned at Turbine seal top of chamber (10.2); Controller (5) side is connected with evaporator exit pressure transmitter (2) and steam turbine first pressure transmitter (3) respectively by controller supplying tube (5.1), and another is then connected with steam turbine second pressure transmitter (8) and steam turbine the 3rd pressure transmitter (9) respectively by controller supplying tube (5.2); Controller (5) is also connected with oil pump (7) by controller output tube (5.3); This oil pump (7) is connected with steam turbine first pressure transmitter (3), steam turbine second pressure transmitter (8) and steam turbine the 3rd pressure transmitter (9) respectively by sealing oil pipe (5.4).
2. the organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system according to claim 1, it is characterized in that, the model specification of described oil pump (7) is JRDB0.55, and be selected from factory of Taizhou City Jie Rui Machinery Manufacturing Co., Ltd. and produce, working pressure is 0.5mpa ~ 2mpa.
3. the organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system according to claim 1, it is characterized in that, the model specification of described pressure transmitter (3) is 308F I ERI, and be selected from company of Shanghai instrument (group) factory and produce, working pressure is 0 ~ 2mpa.
4. the organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system according to claim 1, is characterized in that, the model specification of described controller (5) is S314, is selected from factory of Siemens and produces.
5. an organic Rankine bottoming cycle electric turbine group sealing control method according to claim 1, is characterized in that, comprise the steps:
A, pressure transmitter export sealing signal: export the command signal of sealing load variation tendency by evaporator exit pressure transmitter (2) and steam turbine first, second, third pressure transmitter (3,8,9) to controller (5);
B, controller receive sealing signal: the command signal being accepted the sealing load variation tendency transmitted from the via controller supplying tube (5.1,5.2) of pressure transmitter by controller (5);
C, controller instruction oil pump regulate pressure: controller (5) makes it equal with the pressure in Seal cage according to the command signal of sealing load variation tendency, and instruction oil pump (7) exports revised sealing load oil;
D, dynamic oil film seal: revised sealing load oil reaches steam turbine first, second, third pressure transmitter (3,8,9) respectively by sealing oil pipe (5.4), thus makes sealing zero leakage, realizes the sealing of steam turbine (10) dynamic oil film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139546.XA CN104763480B (en) | 2015-03-29 | 2015-03-29 | There is organic Rankine bottoming cycle electric turbine group and the sealing control method of dynamic oil film sealing system |
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| CN201510139546.XA CN104763480B (en) | 2015-03-29 | 2015-03-29 | There is organic Rankine bottoming cycle electric turbine group and the sealing control method of dynamic oil film sealing system |
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| CN104763480A true CN104763480A (en) | 2015-07-08 |
| CN104763480B CN104763480B (en) | 2016-08-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58200004A (en) * | 1982-05-19 | 1983-11-21 | Hitachi Ltd | System for processing leaked oil at mechanical seal |
| JPS5928726B2 (en) * | 1979-04-23 | 1984-07-16 | 三井造船株式会社 | Turbine shaft seal oil separation method |
| RU2120038C1 (en) * | 1996-09-25 | 1998-10-10 | Шаргородский Виктор Семенович | System of end seals for steam turbine |
| CN1269872A (en) * | 1998-03-13 | 2000-10-11 | 株式会社日立制作所 | Centrifugal compressor and shaft seal used thereof |
| CN203547804U (en) * | 2013-11-12 | 2014-04-16 | 万逵芳 | Airtight turbine shaft seal system |
| CN204552838U (en) * | 2015-03-29 | 2015-08-12 | 武汉长海高新技术有限公司 | A kind of organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system |
-
2015
- 2015-03-29 CN CN201510139546.XA patent/CN104763480B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928726B2 (en) * | 1979-04-23 | 1984-07-16 | 三井造船株式会社 | Turbine shaft seal oil separation method |
| JPS58200004A (en) * | 1982-05-19 | 1983-11-21 | Hitachi Ltd | System for processing leaked oil at mechanical seal |
| RU2120038C1 (en) * | 1996-09-25 | 1998-10-10 | Шаргородский Виктор Семенович | System of end seals for steam turbine |
| CN1269872A (en) * | 1998-03-13 | 2000-10-11 | 株式会社日立制作所 | Centrifugal compressor and shaft seal used thereof |
| CN203547804U (en) * | 2013-11-12 | 2014-04-16 | 万逵芳 | Airtight turbine shaft seal system |
| CN204552838U (en) * | 2015-03-29 | 2015-08-12 | 武汉长海高新技术有限公司 | A kind of organic Rankine bottoming cycle electric turbine group with dynamic oil film sealing system |
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| CN104763480B (en) | 2016-08-17 |
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