CN102168583B - Steam turbine special for saturated steam - Google Patents
Steam turbine special for saturated steam Download PDFInfo
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- CN102168583B CN102168583B CN201110102203.8A CN201110102203A CN102168583B CN 102168583 B CN102168583 B CN 102168583B CN 201110102203 A CN201110102203 A CN 201110102203A CN 102168583 B CN102168583 B CN 102168583B
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Abstract
The invention relates to a steam turbine special for saturated steam. The steam turbine comprises a base frame, wherein the base frame is provided with a front cylinder and a rear cylinder; a drainage hole is formed at the bottom of the front cylinder; water in the steam turbine flows out of the drainage hole; rotors are arranged in the front cylinder and the rear cylinder; the rotors are provided with multistage impellers; the impellers comprises impeller seats and moving blades; one end of each impeller seat is connected with the rotors; the impeller seats are connected with the moving blades; the moving blades are provided with drainage tanks; baffle plates are arranged among all the stages of impellers; and one end of each baffle plate is connected with the shell wall of the front cylinder. In the steam turbine special for the saturated steam, coagulated moisture carried by steam fluently passes through the steam turbine until being guided out of the steam turbine in the advancing process, and any impact action is not generated, so that the problem that coagulated water in the saturated steam which is gasified and cooled from converter top gas of a converter cavitates the body of the steam turbine is solved.
Description
Technical field
The present invention relates to a kind of steam turbine, particularly relate to a kind of Special turbine that can be applicable to saturated vapour.
Background technique
The work that Energy Chain extends is present in industry-by-industry, at present, domestic steel industry, originally discharge amount is large, the energy that technical finesse difficulty is low, substantially all obtained now reasonable utilization, for example: blast furnace TRT top pressure power generation, coal gas (blast furnace gas, coal gas of converter and coke-stove gas) reclaim and by gas fired boiler, to produce steam and generate electricity ... Deng, but the steam that the vaporization of converter furnace roof is cooling produced, its feature is except the fluctuation that the periodicity because of the manufacture cycle produces, maximum feature is exactly to be saturated vapour, but because of its quantity relatively little, the reason of most critical is existence-" mentality of designing based on saturated vapour specific volume feature and the solution of saturated vapour to cavitation of blade " of technical bottleneck, make it all cannot well utilize (without successful case) so far, substantially all carry out the utilization (utilization of production technology link of low value, heating, cook in dining room, have a bath ... Deng) or directly discharge, not still a kind of great waste, and atmosphere is caused to serious thermo-pollution.
And the vaporize feature of cooling saturated vapour of converter furnace roof is exactly: 1) for superheated vapor, the specific volume of saturated vapour is larger, mechanical efficiency is low, if the mentality of designing according to superheated vapor designs, and utilization is saturated vapour working medium, can cause acting not reach designing requirement, exert oneself and have larger gap with rated power; 2) it is in saturation state, after expansion acting, can produce a large amount of water of condensation is carried in steam, if utilize steam turbine to carry out the conversion of energy, a large amount of water will wash away blade and runner generation, body is caused to structural destruction, common steam turbine cannot normally be worked, thereby energy conversion cannot be realized smoothly.
Summary of the invention
The object of the present invention is to provide a kind of converter furnace roof cooling saturated vapour, the solution converter furnace roof problem of cavitation of cooling saturated vapour to turbine blade and runner of vaporizing of vaporizing that be suitable for, make the object of energy conversion be able to the saturated vapour Special turbine of realizing smoothly.
Saturated vapour Special turbine of the present invention comprises:
Pedestal, is provided with front cylinder, exhaust casing on described pedestal; Described front cylinder is hollow design, and one end of described front cylinder is communicated with steam inlet device, and described front cylinder bottom is provided with weep hole; Water in steam turbine flows out through this weep hole, and exhaust casing, is hollow design, and the other end of described front cylinder is communicated with described exhaust casing.Described saturated vapour Special turbine also comprises front steam seal and rear packing.
In described front cylinder and exhaust casing, be provided with rotor, nine grades of impellers are installed on described rotor; Described impeller comprises impeller base and moving vane, and one end of described impeller base is connected with described rotor, on described impeller base, is connected with moving vane, and described moving vane is provided with drain tank; The 6th grade, the 7th grade, the 8th grade moving vane is provided with and carries shroud, and all the other moving vanes at different levels are provided with end shroud, and one end of end shroud is provided with boss, carries shroud and moving vane is formed in one, more firm and durable.Described impeller base is provided with equalizing orifice, and this equalizing orifice is used for the pressure of a large amount of saturated vapours of balance, plays buffer function; Between every grade of described impeller, be provided with dividing plate, described dividing plate is provided with stator blade, and one end of described dividing plate is connected with the shell wall of described front cylinder; Described dividing plate is provided with diaphragm gland, and the size of diaphragm gland and dividing plate matches.
Described drain tank skew moving vane center line 0～1.5mm, described first order moving vane to the drain tank cross section of level V moving vane is Y type; The drain tank cross section of nine grades of moving vanes of described the 6th grade of moving vane to the is U-shaped, and Y type drain tank technique is simple, but carrying capacity is few, and the U-shaped drain tank water yield is large, but technique is difficult.
As a preferred embodiment of the present invention, between described stator blade, be provided with steam passage.
As a preferred embodiment of the present invention, the moving vane surface that level V to the is eight grades adopts electro discharge hardening, welds officials Tai Lie alloy slice on described afterbody moving vane, shock-resistant.
Saturated vapour Special turbine of the present invention is applicable to the operation of 0.3-0.9MPa saturated vapour parameter safety, in running, utilize building up principle, the entrained moisture that condenses of saturated vapour is got rid of to cylinder shell wall through drain tank under the effect of centrifugal force, finally by weep hole, flow out.
The present invention adds the cavitation design of setting up defences, and the current in working steam are derived in time, improves steam quality, has greatly reduced the impact of current to moving vane, thereby improves the life-span of moving vane.Moving vane surface adopts electro discharge hardening, and the water resistant brush ability of moving vane is greatly improved.The present invention can make full use of the energy, installs simple.
Accompanying drawing explanation
Fig. 1 partly cuts open schematic diagram for the electricity generating device overall structure of saturated vapour Special turbine of the present invention is installed.
Fig. 2 is saturated vapour Special turbine generalized section of the present invention.
Fig. 3 is saturated vapour Special turbine moving vane schematic diagram of the present invention.
Reference character is as follows:
1 front cylinder 2 exhaust casing 3 dividing plate 4 steam passages
5 impeller base 6 moving vane 8 weep hole 9 rotors
The rear packing of 10 steam inlet device 11 pedestal 12 front steam seal 13
14 equalizing orifice 15 end shrouds 16 carry shroud 17 stator blades
Embodiment
Below in conjunction with accompanying drawing, saturated vapour Special turbine of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, saturated vapour Special turbine of the present invention comprises pedestal 11, and front cylinder 1, exhaust casing 2 are installed on described pedestal 11; Front cylinder 1 is hollow design, and one end of front cylinder 1 is communicated with steam inlet device 10, and described front cylinder 1 bottom is provided with weep hole 8; Exhaust casing 2 is hollow design, and the other end of front cylinder 1 is communicated with exhaust casing 2; Described saturated vapour Special turbine also comprises front steam seal and rear packing.
In front cylinder 1 and exhaust casing 2, be provided with rotor 9,9 grades of impellers are installed on rotor 9; Described impeller comprises impeller base 5 and moving vane 6, and one end of impeller base 5 is connected with rotor 9, is connected with moving vane 6 on impeller base 5, and moving vane 6 is provided with drain tank; Impeller base 5 is provided with equalizing orifice 14, and this equalizing orifice 14 is used for the pressure of a large amount of saturated vapours of balance, plays buffer function; Between every grade of described impeller, be provided with dividing plate 3, described dividing plate 3 is provided with stator blade 17, between described stator blade 17, is provided with steam passage 4, and one end of dividing plate 3 is connected with the shell wall of front cylinder 1; Described dividing plate 3 is provided with diaphragm gland, and the size of diaphragm gland and dividing plate 3 matches.
As shown in Figure 3, the 6th grade, the 7th grade, the 8th grade moving vane 6(6f, 6g, 6h) be provided with and carry shroud 16, for alleviating the impact force that steam brings, all the other moving vanes at different levels 6 except the 9th grade are provided with end shroud 15, and one end of end shroud 15 is provided with boss.
Described first order moving vane to the drain tank cross section on level V moving vane (6a, 6b, 6c, 6d, 6e) is Y type; Drain tank cross section on nine grades of moving vanes of described the 6th grade of moving vane to the (6f, 6g, 6h, 6i) is U-shaped.
The surface of eight grades of moving vane 6h of level V moving vane 6e to the adopts electro discharge hardening; The 9th grade of upper welding of moving vane 6i officials Tai Lie alloy slice.Dividing plate 3 is provided with diaphragm gland, in order to the leakage vapour between reducing every grade.
During work, by steam inlet device 10, regulate the saturated vapour of porthole, through nozzle puffing, acting in moving vane 6, vapor (steam) temperature reduces humidity and increases, and the cavitation of blade problem causing greatly for solving saturated steam wetness flows under the effect of centrifugal force through drain tank water in vapor, get rid of into cylinder shell wall, finally by weep hole, flow out.
Claims (4)
1. saturated vapour Special turbine, is characterized in that, comprising:
Pedestal, is provided with front cylinder, exhaust casing on described pedestal;
Described front cylinder is hollow design, and one end of described front cylinder is communicated with steam inlet device, and described front cylinder bottom is provided with weep hole;
Exhaust casing, is hollow design, and the other end of described front cylinder is communicated with described exhaust casing;
In described front cylinder and exhaust casing, be provided with rotor, nine grades of impellers are installed on described rotor;
Described impeller comprises impeller base and moving vane, and one end of described impeller base is connected with described rotor, on described impeller base, is connected with moving vane, and described moving vane is provided with drain tank;
The 6th grade, the 7th grade, the 8th grade moving vane is provided with and carries shroud, and all the other moving vanes at different levels are provided with end shroud, and one end of end shroud is provided with boss;
Between every grade of described impeller, be provided with dividing plate, described dividing plate is provided with stator blade, and one end of described dividing plate is connected with the shell wall of described front cylinder;
Described drain tank is offset described moving vane center line 0～1.5mm;
First order moving vane to the cross section of the drain tank of level V moving vane is Y type; The cross section of the drain tank of nine grades of moving vanes of described the 6th grade of moving vane to the is U-shaped.
2. saturated vapour Special turbine according to claim 1, is characterized in that, between described stator blade, is provided with steam passage.
3. saturated vapour Special turbine according to claim 1, is characterized in that, the moving vane surface that level V to the is eight grades adopts electro discharge hardening.
4. saturated vapour Special turbine according to claim 1, is characterized in that, welds officials Tai Lie alloy slice on afterbody moving vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102203.8A CN102168583B (en) | 2011-04-22 | 2011-04-22 | Steam turbine special for saturated steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102203.8A CN102168583B (en) | 2011-04-22 | 2011-04-22 | Steam turbine special for saturated steam |
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| Publication Number | Publication Date |
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| CN102168583A CN102168583A (en) | 2011-08-31 |
| CN102168583B true CN102168583B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110102203.8A Active CN102168583B (en) | 2011-04-22 | 2011-04-22 | Steam turbine special for saturated steam |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767397A (en) * | 2012-07-09 | 2012-11-07 | 谢信芳 | Planar double-stroke gas turbine |
| US10072528B2 (en) | 2012-07-11 | 2018-09-11 | Mitsubishi Hitachi Power Systems, Ltd. | Axial-flow exhaust turbine |
| CN109611162A (en) * | 2018-10-25 | 2019-04-12 | 北京康吉森节能环保技术有限公司 | A kind of energy-saving steam turbine power generation unit to be generated electricity using low-pressure saturated steam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304056A (en) * | 1965-03-19 | 1967-02-14 | Hitachi Ltd | Turbine blades |
| US3973870A (en) * | 1974-11-04 | 1976-08-10 | Westinghouse Electric Corporation | Internal moisture removal scheme for low pressure axial flow steam turbine |
| US6474942B2 (en) * | 2000-01-03 | 2002-11-05 | General Electric Company | Airfoil configured for moisture removal from steam turbine flow path |
| CN200985806Y (en) * | 2006-11-01 | 2007-12-05 | 上海汽轮机有限公司 | Dehumidifier for nuclear power steam turbine through flow portion |
| CN201034029Y (en) * | 2006-12-12 | 2008-03-12 | 湖南湘东化工机械有限公司 | Novel low-pressure saturated steam engine |
| CN201581933U (en) * | 2009-12-21 | 2010-09-15 | 山东青能动力股份有限公司 | Saturated steam turbine |
| CN202031656U (en) * | 2011-04-22 | 2011-11-09 | 上海哈能环保节能工程有限公司 | Special turbine for saturated steam |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7318699B2 (en) * | 2005-05-31 | 2008-01-15 | General Electric Company | Moisture removal grooves on steam turbine buckets and covers and methods of manufacture |
| JP2009138540A (en) * | 2007-12-04 | 2009-06-25 | Toshiba Corp | Steam turbine and moisture removing structure for steam turbine stage |
-
2011
- 2011-04-22 CN CN201110102203.8A patent/CN102168583B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304056A (en) * | 1965-03-19 | 1967-02-14 | Hitachi Ltd | Turbine blades |
| US3973870A (en) * | 1974-11-04 | 1976-08-10 | Westinghouse Electric Corporation | Internal moisture removal scheme for low pressure axial flow steam turbine |
| US6474942B2 (en) * | 2000-01-03 | 2002-11-05 | General Electric Company | Airfoil configured for moisture removal from steam turbine flow path |
| CN200985806Y (en) * | 2006-11-01 | 2007-12-05 | 上海汽轮机有限公司 | Dehumidifier for nuclear power steam turbine through flow portion |
| CN201034029Y (en) * | 2006-12-12 | 2008-03-12 | 湖南湘东化工机械有限公司 | Novel low-pressure saturated steam engine |
| CN201581933U (en) * | 2009-12-21 | 2010-09-15 | 山东青能动力股份有限公司 | Saturated steam turbine |
| CN202031656U (en) * | 2011-04-22 | 2011-11-09 | 上海哈能环保节能工程有限公司 | Special turbine for saturated steam |
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| Publication number | Publication date |
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| CN102168583A (en) | 2011-08-31 |
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Effective date of registration: 20220624 Address after: 200433 room 601-48, No. 323, Guoding Road, Yangpu District, Shanghai Patentee after: GUOFU ENERGY-SAVING DEVELOPMENT Co.,Ltd. Address before: 201607 room 11-2, No. 3560, Yexin Road, Maogang Town, Songjiang District, Shanghai Patentee before: SHANGHAI HANENG ENVIRONMENTAL PROTECTION ENERGY-SAVING ENGINEERING Co.,Ltd. |
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