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1. 发明专利

JPS5793685A FLOW-THROUGH TYPE HYDRAULIC TURBINE 失效
公开(公告)号：JPS5793685A
公开(公告)日：1982-06-10
申请号：JP16808480
申请日：1980-12-01
申请人： HITACHI LTD
发明人： OKUZAWA TSUTOMU , ITOU SHIYOUJI , YAMABE MASAHIRO
IPC分类号： F03B1/00 , F03B11/04
摘要： PURPOSE:To properly reduce noise and vibration by forming the air intake part and the air discharge part which communicates to the air intake part and is opened into the negative pressure space in a casing, on a rotary main shaft. CONSTITUTION:The air intake part 19 which communicates to the atomosphere and the air discharge part 18 which communicates to the air intake part 19 and is opened, on the rotary peripheral surface of a rotary main shaft 12, into the negative pressure space in a casing 14 are formed on the rotary main shaft 12. Therefore, if a negative pressure is formed in the casing 14, the air inhaled from the air intake part 19 is discharged from the air discharge part 18, and an air bubble layer is formed between the rotary peripheral surface of the rotary main shaft 12 and the jet stream in contact with said rotary peripheral surface, and the action of the jet stream onto the rotary main shaft 12 is softened, so noise and vibration can be reduced properly.

2. 发明专利

JPS59221469A GUIDE VANE PARTITIONING PLATE FOR FLOW-THROUGH WATER TURBINE 失效
公开(公告)号：JPS59221469A
公开(公告)日：1984-12-13
申请号：JP9561083
申请日：1983-06-01
申请人： HITACHI LTD
发明人： ITOU SHIYOUJI , YAMABE MASAHIRO
IPC分类号： F03B1/00
摘要： PURPOSE:To eliminate the deterioration of performance due to biased flow generated at the upstream side of the guide vane by a method wherein a length between the axial center of guide vane and the upstream end of the guide vane partitioning plate is determined so as to be 0.6-1.1 times of the total width of flow path in the axial direction of the water turbine. CONSTITUTION:The length (1) from the axial center of the guide vane to the upstream end of the guide vane partitioning plate 11 is determined so as to be 0.6-1.1 times of the width L of flow path for the water turbine. In case the guide vane 4A is fully closed, water stream flowing to the guide vane 4B side is biased to the upstream side of the guide vane partitioning plate 11. This biased flow, however, is rectified while it flows through the flow path between the guide vane partitioning plate 11 and the wall of an inlet pipe 1 and is changed into an auniform flow when it flows into the flow path at the mounting part of the guide vane 4B.

3. 发明专利

JPS58222982A One-trough water turbine 失效
标题翻译：一次性水轮机
公开(公告)号：JPS58222982A
公开(公告)日：1983-12-24
申请号：JP10573782
申请日：1982-06-18
申请人： Hitachi Ltd
发明人： YAMABE MASAHIRO , ITOU SHIYOUJI , TAKAGI YUUSUKE
IPC分类号： F03B15/20 , F03B15/14
CPC分类号： F03B15/14 , Y02E10/226
摘要： PURPOSE:To enable to perform a highly efficient operation conforming to an operating condition, by regulating an air valve so that a water level, detected by a water level detector, is equal to an optimum water level in a water turbine found according to predetermined control characteristic in case an operating condition is provided. CONSTITUTION:A water level in a water turbine found by a water level detector 20 is compared with a water level in a water turbine found by a means 19 for finding an optimum water level in a water turbine to regulate the degree of opening of an air valve 22 by means of an air quantity controller 21 so that the detected water level in the water turbine is equal to the optimum water level. As a result, in case an operating condition including a head, a rotative speed, the degree of opening of a guide vane, and a width of a water passage is constant, a normally constant water level in a water turbine is held. In case a change in such operating condition occurs, the detecting results of the water level detector 20 are compared with the optimum water level in the water turbine, subsequent to such change, found by the means 19 to regulate the degree of opening of the air valve 22, resulting in ability to perform a highly efficient operation conforming to an operating condition.
摘要翻译：目的：为了能够执行符合操作条件的高效率操作，通过调节空气阀，使得由水位检测器检测到的水位等于根据预定控制发现的水轮机中的最佳水位在提供操作条件的情况下的特性。构成：将由水位检测器20发现的水轮机中的水位与用于在水轮机中找到最佳水位的装置19找到的水轮机中的水位进行比较，以调节空气的开度阀22通过空气量控制器21，使得水轮机中检测到的水位等于最佳水位。结果，在包括头部，旋转速度，导向叶片的开度和水通道的宽度的操作条件是恒定的情况下，保持水轮机中的正常恒定的水位。如果发生这种操作条件的变化，则将水位检测器20的检测结果与水轮机中的最佳水位进行比较，在这种变化之后，由装置19发现调节空气的开度阀22，从而能够执行符合操作条件的高效操作。

4. 发明专利

JPS60164669A RUNNER VANE OF WATERWHEEL 失效
公开(公告)号：JPS60164669A
公开(公告)日：1985-08-27
申请号：JP1995684
申请日：1984-02-08
申请人： HITACHI LTD
发明人： TAKAGI YUUSUKE , ITOU SHIYOUJI , YAMABE MASAHIRO
IPC分类号： F03B1/00 , F03B1/02 , F03B3/12
摘要： PURPOSE:To obtain a cross-flow waterwheel having a high efficiency by setting the runner-vane inlet gap in relation to the runner outer-diameter and the number of pieces of runner vanes, on the basis of the results or experiments. CONSTITUTION:A runner vane 4 is connected close to the outer periphery of the runner of a cross-flow waterwheel. The distance closest from the front edge of other runner vane 4 contiguous to the back surface of the former runner vane 4 is a runner-vane inlet gap DELTA1. The runner vane 4 is arranged by setting, the runner outer-diameter D1 and the number Z of pieces of the runner vanes so that the following relation is established: 1.440/Z

5. 发明专利

JPS5923087A Method for controlling operation of once-through water turbine 失效
标题翻译：控制一次性水轮机运行的方法
公开(公告)号：JPS5923087A
公开(公告)日：1984-02-06
申请号：JP13224682
申请日：1982-07-30
申请人： Hitachi Ltd
发明人： YAMABE MASAHIRO , TAKAGI YUUSUKE , ITOU SHIYOUJI , TOSHIMA MASAMI
IPC分类号： F03B15/20 , F03B15/00
CPC分类号： F03B15/00 , Y02E10/226
摘要： PURPOSE:To reduce the hydraulic loss of a water turbine produced on the inside of a runner, by reducing the water flow rate by decreasing the opening of guide vanes temporarily in low-output operation of the water turbine, and thereby lowering the water surface under the runner for feeding air to the inside of the runner. CONSTITUTION:In low-outut operation of a water turbine, the water flow rate is reduced temporarily by decreasing the opening of guide vanes 6. By thus lowering the water surface 11, a hollow passage is formed on the downstream side of jet flow 12 and air is supplied to the central portion of a runner 1. In shifting the point of operation in the low-output range to a point of operation in the high-output range, the hydraulic loss produced on the inside of the runner 1 can be reduced by feeding air sufficiently to the central portion of the runner 1. With such an arrangement, it is enabled to operate the water turbine at a high output (at a high efficiency).
摘要翻译：目的：为了减少水轮机内侧产生的水轮机的液压损失，通过在水轮机的低输出运行中暂时降低导向叶片的开度来降低水流量，从而降低水流量用于将空气供给到跑步者内部的转轮。构成：在水轮机的低空作业中，通过降低导向叶片6的开度来暂时降低水流量。通过如此降低水面11，在喷射流12的下游侧形成中空通路，空气被供应到转轮1的中心部分。在将低输出范围内的操作点移动到高输出范围内的操作点时，可以减少在跑步者1内部产生的液压损失通过将空气充分地供给到流道1的中心部分。通过这样的布置，能够以高输出（高效率）操作水轮机。

6. 发明专利

JPS5896179A METHOD OF ADJUSTING OPENING OF GUIDE VANE IN FLOW- THROUGH TYPE WATER WHEEL 失效
公开(公告)号：JPS5896179A
公开(公告)日：1983-06-08
申请号：JP19285481
申请日：1981-12-02
申请人： HITACHI LTD
发明人： TAKAGI YUUSUKE , ITOU SHIYOUJI
IPC分类号： F03B15/20 , F03B11/04 , F03B13/04
摘要： PURPOSE:To prevent vibration by providing individually a plurality of guide vanes capable of opening and closing to adjust the opening of the guide vane such that the downstream side of sectional area of flow path varying with the opening and closing amount of these vanes is always smaller than the upstream side. CONSTITUTION:A normal guide vane 6 is provided intermediately between upper and lower water path walls 7, 8 and a guide vane 12 provided near the wall 8 to be respectively supported by individual rotary shafts 13, 14 while being drivably opened and closed by a drive mechanism. Also, the guide vane 12 is provided with a curved surface 15 smoothly contacting a curved surface 8' of the wall 8 and the other surface 16 contacting a wall portion 8'' at the runner 2 side so that the extensions of these both surfaces intersect with each other near the runner to form the downstream end 17. And when both guide vanes are rotated counterclockwise, the min. sectional area portion of flow path at the lower side water path 9' provides the downstream end 17 in the same way as in the full opened time so that passing water stream provides a reduced one with small head loss and cavitation hardly occurs.

7. 发明专利

JPS56135756A HYDRAULIC MACHINE HAVING SEMISPIRAL CASING 失效
公开(公告)号：JPS56135756A
公开(公告)日：1981-10-23
申请号：JP3890180
申请日：1980-03-28
申请人： HITACHI LTD
发明人： ITOU SHIYOUJI , OKUZAWA TSUTOMU
IPC分类号： F03B3/02 , F03B3/00 , F03B3/16 , F03B11/04
摘要： PURPOSE:To render the water flow through stay vanes uniform over the entire circumference, by disposing one or more water guide vanes in a casing on the upstream side of the stay vanes. CONSTITUTION:Two water guide vanes 8a, 8b having a curved camber line are disposed in a casing 1 on the upstream side of stay vanes 4. By the function of these guide vanes 8a, 8b arranged as above, water flow toward one wall surface in the semispiral section of the casing is increased, so that the amount of water flowing into the beginning portion 6 of the sprial is reduced. Resultantly, the velocity of water flow at the beginning portion 6 of the spiral is lowered while that at the end portion 7 of the spiral is increased. Therefore, it is enabled to make uniform the water flow through adjacent two stay vanes in a semispiral casing.

8. 发明专利

JPS60190676A Flow-through turbine 失效
标题翻译：流量涡轮机
公开(公告)号：JPS60190676A
公开(公告)日：1985-09-28
申请号：JP4392284
申请日：1984-03-09
申请人： Hitachi Ltd
发明人： ITOU SHIYOUJI
IPC分类号： F03B1/00
CPC分类号： F03B3/00 , F05B2240/244 , Y02E10/223
摘要： PURPOSE:To improve the performance by peeling the water flow at the lower wall side thereby preventing peeling at the guide vane side under small opening of guide vane. CONSTITUTION:A hole 15 for communicating between a flow path 13 and the interior of casing 14 is made through the lower wall of a flow-through turbine. Under small opening of a guide vane 4, air in the casing 14 is fed through said through-hole 15 by means of the negative pressure. Said air will cause peeling of water flow 12 at the lower wall 8 side. Consequently, peeling will not occur at the guide vane 4 side resulting in improvement of the performance.
摘要翻译：目的：通过剥离下壁侧的水流来改善性能，从而防止在导向叶片的小开口处的导向叶片侧的剥离。构成：用于在流路13和壳体14的内部之间连通的孔15通过流通涡轮的下壁制成。在导向叶片4的小开口下，壳体14中的空气通过负压通过所述通孔15。所述空气将导致在下壁8侧的水流12的剥离。因此，导叶4侧不会发生剥离，导致性能的提高。

9. 发明专利

JPS58192973A Flow through water wheel 失效
标题翻译：通过水轮流动
公开(公告)号：JPS58192973A
公开(公告)日：1983-11-10
申请号：JP7547682
申请日：1982-05-07
申请人： Hitachi Ltd
发明人： YAMABE MASAHIRO , TAKAGI YUUSUKE , ITOU SHIYOUJI , TOSHIMA MASAMI
IPC分类号： F03B1/00
CPC分类号： F03B3/00 , Y02E10/223
摘要： PURPOSE:To reduce hydraulic loss generated in a runner by a method wherein each of a runner side plate and a partitioning plate are provided with air holes to enable to supply the necessary amount of air to the central part of the runner at all times. CONSTITUTION:The side plate 2 and the partitioning plate 3 of the runner 1 are provided with one or a plurality of air holes 20, 21. The air, supplied from an air valve 15 into the side chamber 19 of the runner, is supplied to the central part of the runner 1 through these air holes 20, 21 and forms an air zone 13 at all times.
摘要翻译：目的：通过流道侧板和分隔板中的每一个设置有气孔以便能够始终向跑步者的中心部分供应必要量的空气，以减少流道中产生的液压损失。构成：流道1的侧板2和分隔板3设置有一个或多个气孔20,21。从空气阀15供给到流道的侧室19中的空气被供给到流道1的中心部分通过这些气孔20,21，并始终形成空气区13。

10. 发明专利

JPS5732071A Runner vane for hydraulic machine 失效
标题翻译：液压机运行范围
公开(公告)号：JPS5732071A
公开(公告)日：1982-02-20
申请号：JP10504580
申请日：1980-08-01
申请人： Hitachi Ltd
发明人： OKUZAWA TSUTOMU , ITOU SHIYOUJI , YAMABE MASAHIRO , DOI TAKAO
IPC分类号： F03B3/12
CPC分类号： Y02E10/223
摘要： PURPOSE: To prevent cavitation and corrosion in the spot in such a way that the constant rate of notches are provided near the front shroud in the runner vane of a hydraulic machine of which the front shroud is fixed at the tip, and the rear shroud fixed in the rear end.
CONSTITUTION: Notched port 22 with 30° in the swept-back angle is provided with the length corresponding to 1/4 the length l between the front shroud 4 and the rear shroud 6 which are situated on the upstream side of a runner vane 2. Thus, the flow near the front shroud in the conventional use as shown by broken lines with arrow is flowed by being pushed to the front shroud 4 as shown by actual lines with arrow, and generation of cavitation can be controlled.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了防止现场的气蚀和腐蚀，使得在前护罩固定在尖端处的液压机的流道叶片中靠近前护罩设置凹口的恒定速率，并且后护罩固定在后端。构成：带有30度的缺口22。在扫掠角度中设置有对应于位于流道叶片2的上游侧的前护罩4和后护罩6之间的长度l的1/4的长度。因此，前护罩附近的流动在用箭头的虚线所示的常规使用中，通过被箭头的实线所示的方式推动到前护罩4而流动，并且可以控制空化的产生。

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