JPS60212690A - Pumping device - Google Patents

Abstract

PURPOSE:To enable the pumping operation of water to be performed in uniform efficiency in no relation to a quantity of the river water, by utilizing a head of the dammed river water when it is released so as to rotate a motor and rotating a pump by this rotation so as to force a part of the dammed river water to be fed to a higher level of water. CONSTITUTION:The first waterway 9 provides in its inside a screw pump 1, and a turbine wheel of this pump 1 is rotated by releasing dammed river water. While, in order to pump up the dammed river water further to a feed water level 15 in a waterway in a higher water level, the second waterway 10 is provided between a level of the dammed water and the feed water level 15. A pump 2, being provided in the waterway 10, is driven by rotating energy of the pump 1, pumping up a part of the river water to the feed water level.

Description

[Detailed description of the invention]

(A) Technical field of the invention The present invention relates to a water pumping device, in particular, for example, a device for weiring river water.
In a water pumping device that sends the raised river water as water supply, industrial water, water for reservoir water, etc., the rotation shaft of the first screw pump is activated by using the energy when discharging the river water that has been dammed up. The amount of river water that can be used by rotating the weir and driving a second screw pump using the rotational energy to pump up a portion of the river water discharged from the weir to a higher water level. This invention relates to a water pumping device that can be operated at approximately uniform efficiency without being greatly affected by the size of water. (B) Background and problems of the technology Traditionally, the practice has been to take in tap water, industrial water, water for reservoirs, etc. from rivers and send water to the target location.
Water is pumped up to the water supply level when necessary. In addition, the water in the predetermined waterway, which has already been drained to 11M, will be diverted to a higher water level. In such cases, it is often necessary to pump water equivalent to a relatively small head, but this also requires a considerable amount of energy and labor costs for pumping, as well as facility maintenance costs. Often necessary. ) water pump used in normal cases

[, (The water is pumped by high-speed rotation of the impeller, but it is efficient and efficient under the low head of about 5 m at most as mentioned above.) One configuration was used in which the pump was driven by φIJ.
For example, when taking water from a river, the number is: [to take all the river water (, 1, tl<, of course, even in times of drought, the river III'I,'l river water and t7,
Focusing on the fact that each river is required to flow downstream at a prescribed flow rate, and also on the fact that in the case of screw pumps, the amount of pumped water can be adjusted steplessly, and there is little change in efficiency due to flow rate. The purpose of this invention is to enable water pumping under the above-mentioned low head to be carried out efficiently while reducing energy costs to zero. Therefore, the water pumping device of the present invention pumps water up to the weir and sends the pumped water to a higher position as service water. A first flow channel installed with a predetermined slope, the weir-raised water level and the weir-1 where the water is conveyed.
] A second flow channel installed with a predetermined slope between it and the water supply level, which is higher than the water level, and a second flow channel installed within the first flow channel and capable of forward and reverse rotation. 1 screw pump, and a second screw pump installed in the second flow channel, the dammed water is discharged into the first flow channel and the first screw pump is installed in the second flow channel. The rotating shaft of the pump is rotated by the discharged water.1! 1, the first sufflip, -
・The rotational energy of the pump drives the second suffliff, ・the pump is driven to generate 1 through the flow channel of 1 and 2.
- IN[k is defined as having an operation mode in which a part of the water at the water level at the weir is pumped up to Juki water supply 4I>. This will be explained below with reference to the drawings. (D) Embodiment of the invention FIG. 1 is an explanatory diagram for explaining one embodiment to which the present invention is applied, FIG. 2 is an embodiment of the configuration of a screw pump used in the present invention, and FIG. 3 is No. 5r. Figure 2 is a plan view of an example of equipment compatible with the use of the screw pump shown in Figure 4, Figure 3 is a sectional view taken along line A-A in Figure 5, and Figure 5 is the screw pump shown in Figure 2. Another embodiment of the screw pump that simplifies the aspect of 11'; FIG. 7 shows a sectional view taken along the line BB shown in FIG. 6. In FIG. 1, 100 is a river, 20 (1 is a weir), 300 is a pumping facility where the pumping device of the present invention is installed, and 400 is an irrigation canal for conveying water pumped by the present invention. The river water flowing from upstream is filtered by weir 200, for example, 5
The water is dammed up to a depth of about 1.5 m and is led to the water intake of the pumping facility 300. Then, as will be described in detail with reference to FIGS. 2 and subsequent figures, the dammed river water passes through the first flow channel and is discharged "downstream" as shown in FIG. 1. During this time, a first screw pump is provided in the first flow channel, and the impeller of the first screw pump is rotated by the water discharge. On the other hand, the illustrated waterway 400 has a higher water level than the dammed river water.
In order to pump up the water to the water supply level, a second flow channel is created between the dam-raised water level and the above water supply level, and a second screw pump is installed within the second flow channel. It is being The second screw pump is then driven by the rotational energy of the first screw pump, and a portion of the river water is pumped up to the water supply level.
Will be uploaded. In other words, every time the dammed water is pumped up, the energy generated by ζ (1 to 11.
A portion of the raised water is pumped up to 1 (high) and used as water for 5 [1]. Figure 2 shows one implementation of the scree and pump used in the present invention. Example (shows R configuration. No. 11 1 in the figure is the first pump, - pump that will be inserted into the first flow channel, 21; l: second return after a long time, - A pump that is connected to the second flow channel. 3 (: 1 reducer, 4 is a drive shaft, 5 is a clutch, and 6 is an auxiliary engine with a speed change mechanism. 7 is a bevel gear, 1 is a connecting means, ) (is a fully toothed 11 bow gear, 1 is a connecting means with a rotating direction switching mechanism, 1G
-7 is a surplus power utilization device, for example a generator, +7 is rotational energy D: , ii part is expressed as j7
ing. In the illustrated case, it is aligned with the one-rotation energy transmission section 17. i) The first screw pump 1 has a reduction gear a3 and a drive shaft 4
and a bevel gear 8 having an IJJQ changing mechanism in the direction of rotation. ii) the second screw pump 2 is coupled by a reducer 3, a drive shaft 4 and a bevel gear 7; iii) An auxiliary engine 6, such as a car engine with a 1-transmission, is coupled via a clutch 5. iv) A surplus power utilization device 16 such as a generator is connected to the clutch 5
Combined through. ing. And our 800 screw pump etc. It is installed in the flow channel shown in FIGS. 3 and 4. In FIGS. 3 and 4, numeral 59 indicates a first flow channel, which corresponds to the pump casing of the first screw pump 1, and numeral 10 indicates a second flow channel, which corresponds to the pump casing of the first screw pump 1. 1 corresponds to the pump casing in 2, 11 is a water intake with a gate that takes in the dammed water as shown by arrow a in the figure, and 12 is a discharge port with a gate, 1 as shown in figure 1. Opening “downstream”, 1
3 is a drought water intake with a gate, and the first
The figure shows "When taking water from a water level corresponding to downstream 1 and pumping it up to the water supply level via the first screw pump 1 and second screw pump 2 as described later" (
14 of Lily [1 to 1), 14 is a flow M adjustment [1] with a gate, which has the role of regulating the amount of water flowing into the first flow channel 9 as shown by the arrow ``[eye]'' 515 is Irrigation canal 4
00 (Fig. 1) is the mounting part, for example, about 5 m. As shown by arrow C in the figure, water is pumped up and the water supply level is provided. 18 represents the embankment facility. For example, as shown in Fig. 1. The water raised by the weir 200 is taken in from the increased water 1111 shown in FIG.
Water is discharged to the outlet 12 at m. At this time, both wheels of the first screw pump 1 shown in FIG. 2 are rotated and tightened within the first flow channel 9. The rotational energy is supplied to the rotational energy transmission section 17 via the bevel gear 8 . by this. The second screw pump 2 is driven via the bevel gear 7 shown in FIG. 2, and a portion of the water taken in from the water intake port 11 shown in FIG. Part 1
Pumped up to 5. FIG. 4 shows a cross-sectional view taken along line A-A)Jl in FIG.
It can be seen that it is installed with a slope of about 0 degrees. The rotational energy transmission section 17 shown in FIG. 2 may be considered to be installed near the irrigation canal attachment section 15 shown in FIG. 3 as indicated by the dotted line B in the drawing. In the case of the pump configuration shown in FIG. 2, it is possible to adopt a first-order operation mode, and it is possible to correspond to various conditions. That is. (r) First operation Mr. B (non-powered operation) This is carried out under conditions where a larger amount of water than usual can be used, and as mentioned above, the water taken in from the water intake 11 is
The water is discharged from the discharge port 12 through the flow channel 9, and the impeller of the first screw pump 1 is rotated to drive the second screw pump. A portion of the water taken in from the water intake 11 is transferred to the second flow channel 10.
to pump/amplify. At this time, even though the auxiliary engine is uncoupled by the Locraso f-, the surplus power Isen device 1 fi is uncoupled by the /1 rac thousand, the 1. Emit? Even if I forget υL7, no, no. Day 1] 20th) IL turn 11 yen, (daughter (power draw 1 jl +
iu! This method is used when the amount of water available for use decreases to some extent (the amount of water flowing into the first waterway is to be controlled), and the amount of water to be discharged is reduced. i, I. - power is supplemented by the 111 auxiliary engine (described above);
L. At this time, the surplus power utilization device ¥t1 (that is, 1
Generally, the clutch is disconnected by 1-. (II+) Third operating condition 41 (T) part power operation) The amount of water that can be used is 11. This is taken when the discharge to the first waterway 9 is stopped due to a relatively large decrease,
The bevel gear 8 shown in FIG. 2 is placed in a neutral state, and the first screw pump 1 is brought into a stopped state. The second screw pump 2 is rotated by the auxiliary engine 6 and pumped up. At this time, the surplus power utilization device 616 can be considered to be disconnected by the clutch. In this case, the clutch between the illustrated bevel gears 7 and 8 may be disconnected between the 2nd and 1st positions. (TV) The fourth operation mode (in-line two-stage pumping operation) is used in times of drought, and the auxiliary engine 6
The first screw pump 1 and the second screw pump 2 are driven to pump and amplify water at the drought level in two stages in series as shown in FIG. At this time, the surplus power utilization device 16 is disconnected by the clutch. When the upstream water level has not completely decreased and is between the water intake level and the drought level, the gate of the outlet 12 is closed and the water intake 13 is closed during drought.
By opening the pump and pumping water from the upstream water level, the auxiliary energy required for pumping can be saved. This is because, as a characteristic of screw pumps, when the amount of water being conveyed is the same, the energy required to pump water increases or decreases approximately in proportion to the height at which water is pumped. (V) Fifth operation mode (power extraction operation) This is used when there is no need to supply water temporarily, and the 2 bevel gears 7 and 1 (1111 of 2 shown in Figure 2) are used. With the clutch 5 disengaged, the water taken in from the water intake 111 is discharged into the first flow channel 9, and the water is discharged into the first screw pump 1.
The two impellers are rotated F and li, and the surplus power utilization device 16 is driven via the clutch. As mentioned above, it is possible to adopt various operating conditions ('1), but it is important to note that the operating efficiency of the screw pump is approximately equal regardless of the flow rate. It is extremely preferable to use the screw pump as a power generator/LIQ, or when using it as a pump device. Stepless selection of
This is because it can be adjusted freely depending on the paddy fields that can be used. It was shown that 4J. However, if the idea of the above first jl transformation mode is purely and simply
In order to achieve this by reducing the 11t cost, see Figure 5.
A simple type as shown in FIG. 7 can be adopted. 3. In FIGS. 5 to 7, the symbols in FIG. 2 correspond to those in FIGS. 2 to 4. In the case shown in Figure 5, the first
screw pump 1 and second screw pump 2
and are connected on the same axis. The twisting direction of the wings is reversed. These screw pumps 1 and 2 are attached to a first flow channel 9 and a second flow channel 10 shown in FIG. The water taken in from the water intake port 11 is delivered to the blades of the first screw pump l and the second screw pump 2 at the joint between the first flow channel 9 and the second flow channel 10. be guided. As a result, most of the introduced water causes the first screw pump to rotate, and this rotational energy drives the second screw pump 2,
A second screw pump 2 pumps up a predetermined amount of water. (E) Effects of the Invention As explained above, according to the present invention, regardless of the amount of water that can be used in low-head irrigation equipment, it is possible to utilize the energy of flowing water. becomes.

[Brief explanation of drawings]

Figure 1 & 1 The present invention is applied 4 - An explanatory diagram for explaining embodiments, Figure 2 A screw used in the ζJ tree invention.
3 is a plan view of an embodiment of equipment corresponding to the case where the screw pump shown in FIG. 2 is used; FIG. , FIG. 5 is a simplified version of the screw pump shown in FIG.
The figure is a plan view of an example of equipment corresponding to the case where the screw pump shown in Fig. 5 is used, and Fig. 7 is a plan view of an example of equipment corresponding to the case where the screw pump shown in Fig. 6 is used.
A sectional view taken along line B is shown. In the figure, 5100 is a river, and 200 is II! , 300 is a hot water facility, 400 is an irrigation canal, 1 is a first screw pump,
2 is the second screw pump, 3 is the reduction gear a54 is the drive shaft, 5 is the clutch, 6 is the auxiliary engine, 7 and 8 are the total tooth weight, 9 is the first flow path, l5 0 is the second 11 is the water intake, 12 is the outlet. 13 is a water intake during drought, 14 is a flow rate adjustment port, 15 is an installation part for an irrigation canal, 16 is a surplus power utilization device, ]7 is a rotational energy transmission part, and 18 is an embankment facility. Patent applicant Nippon Water Consultant Co., Ltd. Patent attorney Mori 1) Hiroshi (3 others) 6

Claims (1)

[Claims] In a water pumping device that pumps water and sends the pumped water to a higher position as water, there is a predetermined distance between the weir raising water level and the discharge water level, which is described in -. A first flow channel installed with a slope, with a predetermined gap between the water level of the weir and the water level higher than the water level of the weir at the place where the water supply is carried out. a second flow channel installed with a slope; a first screw pump installed in the first flow channel and capable of stopping and reversing; The pump is equipped with at least a second screw pump that discharges the discharged water into the flow channel of the first screw weir, and the rotating shaft of the first screw pump is used to discharge the discharged water into the water channel of The second screw is rotated by the flowing water, and the second screw is rotated by the rotational energy of the first screw pump.
A water pumping device characterized by having an operation mode of driving a pump to pump up a part of the water at the weir raising water level to the water supply level via the second flow channel.