CN204805019U - Multistage hydropower device of single canal - Google Patents
Multistage hydropower device of single canal Download PDFInfo
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- CN204805019U CN204805019U CN201520371446.5U CN201520371446U CN204805019U CN 204805019 U CN204805019 U CN 204805019U CN 201520371446 U CN201520371446 U CN 201520371446U CN 204805019 U CN204805019 U CN 204805019U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 141
- 230000005611 electricity Effects 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The utility model provides a multistage hydropower device of single canal. It is in a plurality of hydraulic turbines (2) of single water -drawing channel (1) installation more than 2 and 2, cross -sectional area that the tail water turbine corresponds the water -drawing channel be (img file='dest_path_DSB0000143876510000011. TIF'wi='104'he='60' /) times that the one -level hydraulic turbine corresponds water -drawing channel cross -sectional area, the tail water turbine is installed in the position foremost that corresponds the water -drawing channel, it is flaring section (3) that a cross -sectional area enlarges gradually with the changeover portion that the tail water turbine corresponds between the water -drawing channel to go up the corresponding water -drawing channel of the one -level hydraulic turbine. This technological implementation expectancy can improve hydropower efficiency for 90 -99%, reduce the hydropower cost and be 50 -60%, change hydropower in the energy resource structure the proportion and play outstanding effect.
Description
Technical field
The utility model belongs to water generating technology, relate to a kind of at the multiple water turbine of single water-drawing channel along head flow direction order installation more than 2 and 2, front and back water turbine at different levels is series connection or series parallel connection layout, every grade of water turbine is connected by rotating shaft with generator set, and multistage turbine-generator units expection can improve the utilization ratio of water energy.
Background technique
At present, the single water-drawing channel of existing water generating is provided with a water turbine, and water turbine is connected by rotating shaft with generator set, and (distributing canal can be punished by single canal) be i.e. single canal one-level water generating.In water generating process, because the potential energy of water-head water-drawing channel head, potential energy and kinetic energy drive water turbine to rotate by water energy E
water(flowing into the energy before water turbine) is converted into the mechanical energy E of water turbine
machine, the rotation of water turbine rotating shaft drives the rotor turns of generator set and cutting magnetic line produces induced electromotive force and externally transmits electricity, be i.e. electric energy E
electricity, simultaneously the coil of generator set can produce the contrary opposition in equal and opposite in direction direction and the i.e. E that oppositely does work due to the electromotive force at two ends in magnetic field
resistance, this opposition passes to by generator set rotating shaft the head motion that water turbine hinders water-drawing channel again.If
then
such water-drawing channel head can promote hydroelectric generating set rotor further and rotates and finally make electric generating set rotor faster rotational speed generated energy E
electricityincrease, work as E
electricityincrease to
time reach balance, hydroelectric generating set rotor rotating speed is to peaking and settle out; In like manner, when
time, water turbine and electric generating set rotor rotate deceleration generated energy E
electricityreduce, work as E
electricitybe reduced to
in time, reaches and balances and settle out, so
if the energy of water-drawing channel head after turbine-generator units generating is E
end, obtain E
end=E
water-E
resistance, again by
existing water generating, when not considering head and turbine-generator units energy loss, the utilization ratio of water energy is 50%.
Summary of the invention
In order to overcome the low deficiency of existing water generating waterpower utilization rate, the utility model provides a kind of single canal multi-stage hydraulic electricity generating device, and this model utility can improve the utilization ratio of water energy.
The utility model will solve the technological scheme that its technical problem adopts: 1. scheme one, along head flow direction order, multiple water turbine of more than 2 and 2 are installed at single water-drawing channel, front and back water turbine at different levels is tandem arrangement, every grade of water turbine is connected by rotating shaft with generator set, the cross-section area of the water-drawing channel that upstream and downstream water turbine at different levels is corresponding is equal, cross-section area equal determines head, and to flow through the flow velocity of upstream and downstream water turbine at different levels equal with flow, the rotating speed that flow velocity and flow equal determines water turbine at different levels is equal, the generated energy that rotating speed equal determines turbine-generator units at different levels is equal.Suppose that single canal water-drawing channel installs n water turbine altogether, and set the water energy of inflow the 1st grade of water turbine as E
water, the water flowing into n-th grade of water turbine can be E
n1 water, the water flowing out n-th grade of water turbine can be E
n2 water, the generated energy of n-th grade of turbine-generator units is E
n electricity, n-th grade of turbine-generator units is E because induced electromotive force does work to the obstruction of head
n hinders, then
again
n level turbine-generator units generating total amount
above formula illustrate when n more flood can utilization ratio higher.
2. scheme two, scheme two is identical with scheme one, and install multiple water turbine of more than 2 and 2 at single water-drawing channel along head flow direction order, front and back water turbine at different levels is tandem arrangement, and every grade of water turbine is connected by rotating shaft with generator set; The cross-section area of what scheme two was different from scheme one the is corresponding water-drawing channel of next stage water turbine is the corresponding water-drawing channel cross-section area of upper level water turbine
doubly, the value of k is
downstream water turbine is arranged on the foremost position of corresponding water-drawing channel, changeover portion between the corresponding water-drawing channel of upper level water turbine water-drawing channel corresponding to next stage water turbine is the gradually expanding section that a cross-section area expands gradually, gradually expanding section makes water-drawing channel head have one by anxious to slow buffer space, the cross-section area of the next stage water-drawing channel of the technical program makes it through reasonably designing the flow and the flow velocity that do not affect upper level water-drawing channel head, and then does not affect rotating speed and the generated energy of upper level hydroelectric generating set rotor.If namely the water after water-drawing channel head flows through the 1st grade of water turbine (can flow into the water energy of the 2nd grade of water turbine) is E
1 water, head quality is M
1, flow velocity is V
1, flow is Q
1, the 1st grade of corresponding water-drawing channel cross-section area of water turbine is A
1; It can be E that head flows through the water after the 2nd grade of water turbine
2 water, head quality is M
2, flow velocity is V
2, flow is Q
2, the 2nd grade of corresponding water-drawing channel cross-section area of water turbine is A
2.The rotating speed of upper level turbine-generator units is not affected and generated energy learns that every one-level turbine-generator units is relatively independent operation by next stage turbine-generator units, so
water after in like manner head flows through 3rd level water turbine can for flow through the water after the 2nd grade of water turbine can
namely
by that analogy,
again by
m again
2=M
1?
Again by the flow Q flowing through the 2nd grade
2with the flow Q flowing through the 1st grade
1equal V
2a
2=V
1a
1, namely
in formula
calculated value and optimum value.The cross-section area of the corresponding water-drawing channel of described next stage water turbine is the corresponding water-drawing channel cross-section area of upper level water turbine
k value doubly fully takes into account error in practice of construction and the control to certain one-level or multistage water head energy, so the cross-section area of next stage water-drawing channel sets a larger valued space.
3. scheme three, scheme three principle is with scheme two, and install multiple water turbine of more than 2 and 2 at single water-drawing channel along head flow direction order, every grade of water turbine is connected by rotating shaft with generator set; What be different from scheme two is that water turbine is arranged on water-drawing channel distributing canal, and front and back water turbine at different levels is that series parallel connection is arranged, the cross-section area sum of the corresponding water-drawing channel of next stage water turbine is upper level water turbine corresponding water-drawing channel cross-section area sum
doubly, the value of k is
the cross-section area of the corresponding distributing canal water-drawing channel of water turbine is main canal water-drawing channel downstream latter end cross-section area
doubly,
doubly or 1 times, 1st grade of water turbine front and continued water-drawing channel is the gradually expanding section that a cross-section area expands gradually with the changeover portion between the 1st grade of corresponding water-drawing channel of water turbine, and the cross-section area of the 1st grade of water turbine front and continued water-drawing channel is the 1st grade of water turbine corresponding water-drawing channel cross-section area
doubly and the cross-section area of main canal water-drawing channel downstream latter end be the 1st grade of water turbine corresponding water-drawing channel cross-section area sum
doubly, the reduction of the 1st grade of water turbine front and continued water-drawing channel or main canal cross-section area is conducive to the expenditure of construction reducing water-drawing channel, the relatively fixing construction being more conducive to water-drawing channel of distributing canal water-drawing channel cross-section area, the reasonable Arrangement of distributing canal can reduce the occupy-place of water-drawing channel or horizontal space vertical to the dam foundation, and avoids downstream water-drawing channel because of the excessive increase difficulty of construction of cross-section area.
The beneficial effects of the utility model have following aspect:
1. single canal multi-stage hydraulic electricity generating device of the utility model employing, more fully water can be converted into electric energy, take water-head as the water power plant of 100 meters, by existing single canal one-level generation technology, and do not consider the energy loss of head and water-energy generating electricity unit in power generation process, by above
the utilization ratio obtaining water energy is 50%, the formula released by scheme two
the waterpower utilization rate of n level turbine-generator units can be adopted to be
more existing single canal one-level water generating improves
if implement employing 6 grades of turbine-generator units by scheme two or scheme three to peel off layer by layer water-drawing channel water head energy, generating efficiency is
more existing single canal one-level water generating improves 96.875%.
2. single canal multi-stage hydraulic electricity generating device of the utility model employing, water-drawing channel water head energy is made to be utilized more fully and decay, the negative effect that the head of degradation of energy brings downstream impact is almost nil, therefore significantly can shorten the length of water-drawing channel and cancel installation devices for dissipation of energy at water outlet, by existing single canal one-level water generating, the water-drawing channel expenditure of construction of large medium-size station is 45%, and the shortening of water-drawing channel length and the cancellation expection of water outlet devices for dissipation of energy can reduce the expenditure of construction 10%-30% in water power plant.
3. the enforcement of technical solutions of the utility model makes the impact force of water-drawing channel water outlet head significantly be weakened, impact force weaken the interference that can reduce largely surrounding area noise.
4. significantly weakening of water-drawing channel water outlet head impact force can avoid the supersaturation of downstream water oxygen and reduce the interference of water body sound wave to fish, so just can provide the space of a safety for the existence of fish, ensure the ecological balance of downstream water system, the exploitation that can be again small hydropower station provides technical support.
5. the raising of waterpower utilization rate and the exploitation of small hydropower station, the generated energy of water generating is expected and will be improved 100%-150% on existing basis, annual increase generating 19780-35000 hundred million degree of electricity, so just can improve the ratio of water generating in whole energy resource structure, reduce the ratio of thermal power generation in energy resource structure, save coal resources, reduce thermal power generation to the pollution of air and greenhouse effect, reduce labour force and security incident is reduced to the exploitation of coal, enhance productivity.
6. the raising of waterpower utilization rate and the reduction expection of water power plant expenditure of construction can reduce water generating cost 50%-60%.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the sectional arrangement drawing of the utility model first embodiment.
Fig. 2 is the sectional arrangement drawing of second embodiment.
Fig. 3 is the sectional arrangement drawing of the 3rd embodiment.
1. water-drawing channels, 2. water turbine, 3. gradually expanding section in figure.
Embodiment
In the embodiment shown in fig. 1, multiple water turbine (2) order is arranged on the equal water-drawing channel of upstream and downstream cross-section area (1), front and back water turbine at different levels (2) are tandem arrangement, and every grade of water turbine is connected by rotating shaft with generator set.
In another embodiment shown in Fig. 2, multiple water turbine (2) order is arranged on water-drawing channel (1), front and back water turbine at different levels (2) are tandem arrangement, downstream water turbine is arranged on the foremost position of corresponding water-drawing channel (1), and the cross-section area of the corresponding water-drawing channel of next stage water turbine is the corresponding water-drawing channel cross-section area of upper level water turbine
doubly, the corresponding water-drawing channel of upper level water turbine is the gradually expanding section (3) that a cross-section area expands gradually with the changeover portion between the corresponding water-drawing channel of lower second hydraulic turbine.
The 3rd embodiment's principle shown in Fig. 3 is with embodiment illustrated in fig. 2, be arranged on water-drawing channel distributing canal (1) unlike water turbine (2), front and back water turbine at different levels (2) are that series parallel connection is arranged, the 1st grade of water turbine front and continued water-drawing channel is the gradually expanding section (3) that a cross-section area expands gradually with the changeover portion between the 1st grade of corresponding water-drawing channel of water turbine.
Existing built water power plant, can carry out upgrading in batches and increase installing turbine-generator units or newly-built water power plant use single canal multi-stage hydraulic electricity generating device near the upstream and downstream of existing water power plant to one or several water-drawing channel in the dry season.
The utility model is applicable to the water generating of rivers and creeks, lake, reservoir, tide etc., and water-drawing channel described in the utility model contains the aqueduct of formula behind the dam formula of water generating and dam, diversion tunnel, water-drawing channel, open channel, closed conduit and pipeline etc.
Claims (7)
1. a single canal multi-stage hydraulic electricity generating device, water-drawing channel is provided with water turbine, water turbine is connected by rotating shaft with generator set, it is characterized in that, along head flow direction order, multiple water turbine (2) of more than 2 and 2 are installed at single water-drawing channel, front and back water turbine at different levels (2) are series connection or series parallel connection layout, and every grade of water turbine is connected by rotating shaft with generator set.
2. single canal multi-stage hydraulic electricity generating device according to claim 1, is characterized in that, the cross-section area of the corresponding water-drawing channel (1) of upstream and downstream water turbine at different levels is equal.
3. single canal multi-stage hydraulic electricity generating device according to claim 1, is characterized in that, the cross-section area sum of the corresponding water-drawing channel of next stage water turbine is upper level water turbine corresponding water-drawing channel cross-section area sum
doubly, the value of k is
4. single canal multi-stage hydraulic electricity generating device according to claim 1, it is characterized in that, downstream water turbine is arranged on the foremost position of corresponding water-drawing channel (1).
5. single canal multi-stage hydraulic electricity generating device according to claim 1, it is characterized in that, the corresponding water-drawing channel water-drawing channel corresponding to next stage water turbine of upper level water turbine and the 1st grade of water turbine front and continued water-drawing channel are the gradually expanding section (3) that a cross-section area expands gradually with the changeover portion between the 1st grade of corresponding water-drawing channel of water turbine.
6. single canal multi-stage hydraulic electricity generating device according to claim 1, is characterized in that, the cross-section area of the corresponding distributing canal water-drawing channel of water turbine is main canal water-drawing channel downstream latter end cross-section area
doubly,
doubly or 1 times.
7. single canal multi-stage hydraulic electricity generating device according to claim 1, is characterized in that, the cross-section area of the 1st grade of water turbine front and continued water-drawing channel is the 1st grade of water turbine corresponding water-drawing channel cross-section area
doubly and the cross-section area of main canal water-drawing channel downstream latter end be the 1st grade of water turbine corresponding water-drawing channel cross-section area sum
doubly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520371446.5U CN204805019U (en) | 2015-05-27 | 2015-05-27 | Multistage hydropower device of single canal |
| PCT/CN2016/000178 WO2016188119A2 (en) | 2015-05-27 | 2016-03-31 | Single-tunnel multi-level hydroelectric power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520371446.5U CN204805019U (en) | 2015-05-27 | 2015-05-27 | Multistage hydropower device of single canal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805019U true CN204805019U (en) | 2015-11-25 |
Family
ID=54589855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520371446.5U Expired - Fee Related CN204805019U (en) | 2015-05-27 | 2015-05-27 | Multistage hydropower device of single canal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188119A2 (en) * | 2015-05-27 | 2016-12-01 | 张发林 | Single-tunnel multi-level hydroelectric power generation device |
| CN108412681A (en) * | 2017-09-25 | 2018-08-17 | 李晓亮 | Formula of healing up water wave generator |
-
2015
- 2015-05-27 CN CN201520371446.5U patent/CN204805019U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188119A2 (en) * | 2015-05-27 | 2016-12-01 | 张发林 | Single-tunnel multi-level hydroelectric power generation device |
| WO2016188119A3 (en) * | 2015-05-27 | 2017-02-09 | 张发林 | Single-tunnel multi-level hydroelectric power generation device |
| CN108412681A (en) * | 2017-09-25 | 2018-08-17 | 李晓亮 | Formula of healing up water wave generator |
| CN108571417A (en) * | 2017-09-25 | 2018-09-25 | 李晓亮 | The formula water wave generator that heals up with safety door |
| CN108590933A (en) * | 2017-09-25 | 2018-09-28 | 李晓亮 | The simple formula water wave generator that heals up |
| CN108590931A (en) * | 2017-09-25 | 2018-09-28 | 李晓亮 | The formula water wave generator that heals up with blocked sewage structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |