1.7 E/M and Steel Structures1.7.1 Hydraulic Machinery After analysis a translation - 1.7 E/M and Steel Structures1.7.1 Hydraulic Machinery After analysis a Lao how to say

1.7 E/M and Steel Structures1.7.1 H

1.7 E/M and Steel Structures
1.7.1 Hydraulic Machinery
After analysis and calculation about kinetic energy it is to determine the installed capacity of the HPP as 15 MW. The Maximum head and the minimum head of the HPP will be 67m and 60m respectively, the head will not change significantly and the rated head will be 67m and the model of turbine applicable to such head section is Francis turbine. Through model selection calculation and comprehensive comparison it is to recommend HLA551YY and HLD85 turbine.
The installed capacity of this HPP will be 15MW but the firm energy will only be 1.05MW. since the firm energy is small the layout of the powerhouse area is relatively relaxed through joint studies and comprehensive comparisons of relevant disciplines, it is proposed to select the scheme for 4 horizontal units of 2x5000+2x2500kW.
The main parameters selected are as follows:
(1) Big units
Model of turbine: HLD485-WJ-108
Runner Diameter: 1.08m
Maximum head: 67m
Rated Head: 61m
Minimum head: 60m
Rated Discharge: 9.41m3/s
Rated output: 5.21 MW
Rated speed: 600r/min
Runaway speed: 980r/min
Efficiency at rated operating point: 92.5%
Maximum efficiency: 93%
Allowable suction height: +1.52m
Specific speed: 254m.kW
0/5000
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17 E / M ແລະ​ເຫຼັກ​ກ້າ​ໂຄງ​ສ້າງ
171 Hydraulic ເຄື່ອງ​ຈັກ
ຫຼັງ​ຈາກ​ການ​ວິ​ເຄາະ​ແລະ​ການ​ຄິດ​ໄລ່​ກ່ຽວ​ກັບ​ພະ​ລັງ​ງານ kinetic ມັນ​ແມ່ນ​ການ​ກໍາ​ນົດ​ຄວາມ​ສາ​ມາດ​ໃນ​ການ​ຕິດ​ຕັ້ງ​ຂອງ HPP ເປັນ 15 ເມ​ກາ​ວັດ​. ຫົວ​ຫນ້າ​ສູງ​ສຸດ​ແລະ​ຫົວ​ຫນ້າ​ຕໍາ​່​ສຸດ​ທີ່​ຂອງ HPP ຈະ 67m ແລະ 60 ຕາມ​ລໍາ​ດັບ​, ຫົວ​ຈະ​ບໍ່​ມີ​ການ​ປ່ຽນ​ແປງ​ຢ່າງ​ຫລວງ​ຫລາຍ​ແລະ​ຫົວ​ຫນ້າ​ຈັດ​ອັນ​ດັບ​ຈະ​ໄດ້​ຮັບ 67m ແລະ​ຮູບ​ແບບ​ຂອງ​ກັງ​ຫັນ​ສາ​ມາດ​ນໍາ​ໃຊ້​ກັບ​ສ່ວນ​ຫົວ​ດັ່ງ​ກ່າວ​ແມ່ນ​ຫັນ Francis​. ໂດຍ​ຜ່ານ​ການ​ຄິດ​ໄລ່​ການ​ຄັດ​ເລືອກ​ຮູບ​ແບບ​ແລະ​ການ​ປຽບ​ທຽບ​ສົມ​ບູນ​ມັນ​ເປັນ​ການ​ແນະ​ນໍາ​ໃຫ້ HLA551YY ແລະ turbine HLD85​.
ຄວາມ​ສາ​ມາດ​ຕິດ​ຕັ້ງ​ຂອງ HPP ນີ້​ຈະ 15mW ແຕ່​ພະ​ລັງ​ງານ​ທີ່​ບໍ​ລິ​ສັດ​ພຽງ​ແຕ່​ຈະ​ເປັນ 1.05MW​. ນັບ​ຕັ້ງ​ແຕ່​ພະ​ລັງ​ງານ​ທີ່​ບໍ​ລິ​ສັດ​ຂະ​ຫນາດ​ນ້ອຍ​ຮູບ​ແບບ​ຂອງ​ບໍ​ລິ​ເວນ​ໂຮງ​ງານ​ໄຟ​ຟ້າ​ແມ່ນ​ໄດ້​ສະ​ດວກ​ສະ​ບາຍ​ໂດຍ​ຜ່ານ​ການ​ຂ້ອນ​ຂ້າງ​ສຶກ​ສາ​ຮ່ວມ​ກັນ​ແລະ​ການ​ປຽບ​ທຽບ​ສົມ​ບູນ​ແບບ​ຂອງ​ລະ​ບຽບ​ວິ​ໄນ​ທີ່​ກ່ຽວ​ຂ້ອງ​, ມັນ​ໄດ້​ຖືກ​ສະ​ເຫນີ​ເພື່ອ​ຄັດ​ເລືອກ​ເອົາ​ໂຄງ​ການ​ສໍາ​ລັບ​ການ 4 ຫ້ອງ​ນອນ​ຂອງ 2x5000 + 2x2500kW​.
ການ​ກໍາ​ນົດ​ຕົ້ນ​ຕໍ​ຂອງ​ການ​ຄັດ​ເລືອກ​ມີ​ດັ່ງ​ນີ້​:
( 1​) ຫນ່ວຍ​ງານ​ຂະ​ຫນາດ​ໃຫຍ່
ຮູບ​ແບບ​ຂອງ turbine​: HLD485​, WJ​, 108
ເສັ້ນ​ຜ່າ​ສູນ​ກາງ Runner​: 1.08m
ຫົວ​ສູງ​ສຸດ​: 67m
ຫົວ​ຫນ້າ Rated​: 61m
ຂັ້ນ​ຕ​່​ໍາ​ຫົວ​: 60m
ຕັດ​ລວດ Rated​: 9.41m3 / s
ຜົນ​ຜະ​ລິດ Rated​: 521 ເມ​ກາ​ວັດ
ຄວາມ​ໄວ Rated​: 600R / ນາ​ທີ
ຄວາມ​ໄວ Runaway : 980r / min
ປະ​ສິດ​ທິ​ພາບ​ຢູ່​ໃນ​ຈຸດ​ປະ​ຕິ​ບັດ​ການ​ຈັດ​ອັນ​ດັບ​: 925​%
ປະ​ສິດ​ທິ​ພາບ​ສູງ​ສຸດ​: 93​%
ລະ​ດັບ​ຄວາມ​ສູງ​ດູດ​ອະ​ນຸ​ຍາດ​ໃຫ້​: + 1.52m
ຄວາມ​ໄວ​ສະ​ເພາະ​: 254m.kW
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