CN102297163A - Water pumping device and method for U-shaped channel - Google Patents
Water pumping device and method for U-shaped channel Download PDFInfo
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- CN102297163A CN102297163A CN2010102069126A CN201010206912A CN102297163A CN 102297163 A CN102297163 A CN 102297163A CN 2010102069126 A CN2010102069126 A CN 2010102069126A CN 201010206912 A CN201010206912 A CN 201010206912A CN 102297163 A CN102297163 A CN 102297163A
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Abstract
The invention relates to a water energy collecting method and device, in particular to a water pumping method and device for a U-shaped channel. The water pumping device mainly comprises the U-shaped channel and a water flow energy pump, wherein the water flow energy pump comprises pipelines and is spanned in the U-shaped channel; furthermore, a water head difference is utilized in the U-shaped channel, i.e., a gas collecting device of the water flow energy pump is provided with an upper water outlet and a lower water outlet which are respectively located on the upper liquid level and the lower liquid level of the water heat difference in the U-shaped channel; and water pumping or water lifting is finished by using the water flow energy pump. The invention has the effects and the characteristics that water can be pumped or lifted to a higher position in the U-shaped channel, oil or power supply is not needed, equipment can run automatically, the energy conversion rate is high, and the water pumping device is wide in application range and free of maintenance.
Description
Technical field
The present invention relates to a kind of water conservancy collection of energy method and apparatus, is the method and apparatus that draws water that is used for the U-shaped canal.
Background technique
In irrigation and water conservancy, various channels are all being used, particularly in recent years in newly-built and transformation canal engineering, the U-shaped canal is widely adopted, the U-shaped canal is beneficial to the water delivery sediment transport, improved hydraulics, form best flow cross-section, and have anti-preferably soil matrix and freeze Zhang Nengli, be convenient to construction, labor and material saving, the management condition of providing convenience to management unit, this U-shaped channel is when irrigating, for the farmland that is located in higher topographical but simultaneously,, also need water lift or draw water, make the application of this channel be subjected to very big restriction.
Simultaneously, containing of existing water conservancy energy is very abundant, it is one of important way of energy development and utilization, and has cleaning, very significant advantage such as recirculation, the main mode of the utilization of water conservancy energy is a water generating at present, be to change kinetic energy that current had and potential energy wheel into mechanical energy by water turbine to obtain electric power, like this, just need a large amount of water conservancy infrastructures and the hydraulic generator unit of supporting special use, the disposable input in early stage is quite big, environment had certain harmful effect, hydraulic generator unit complex structure particularly, equipment is huge, and energy conversion rate is low, also breaks down easily and problem, thereby, also need to improve and optimize.
In addition, the utilization of U-shaped channel himself and water conservancy energy, also have restricted many, inefficient deficiency.
Summary of the invention
The object of the invention just provides a kind of simple in structure, with low cost and have the water plug and a method of the U-shaped channel of greater efficiency.
A kind of water plug of U-shaped channel and method mainly can be made up of by water pump U-shaped channel and current, and current can be made up of pipeline by water pump, and are erected in the U-shaped channel.
Further, be in the U-shaped channel, to utilize a head difference, promptly the gas collecting device of current energy water pump goes out water outlet on having, and the two outlet on top and bottom mouth lays respectively at the liquid level up and down of head difference in the U-shaped channel, is finished by current energy water pump and draws water or water lift;
Above-mentioned current can water pump be finished and are drawn water or the method and apparatus of water lift is: a pipeline is set, pipeline is made up of the pipeline more than or two at least, each pipeline is provided with aperture, this pipeline is placed in the liquid, when the aperture of pipeline is positioned at liquid level following time, in pipeline, can form one section water column, in the aperture of pipeline, feed the body of calming the anger this moment, and work as water column two ends gas pressure intensity not simultaneously, water column will be to the less end motion of pressure, and the water that moves to the precalculated position can be collected utilization.Like this, draught head can just be used as energy source fortune water and supply to utilize to eminence or predetermined part, just can be used as water pump and use in the U-shaped channel.
Further, inlet hole is to the height difference of liquid level, less than or height difference much smaller than inlet hole to lower end of duct portion.
Further, above-mentioned pipeline is higher than inlet hole and partly is straight tube, and the internal diameter of pipeline is 2-10mm.
Simultaneously, realize that another water plug of the present invention is: a pipeline is set, pipeline is made up of one or more pipeline at least, each pipeline is provided with aperture, this pipeline is placed in the liquid, pipeline one end is under liquid level, and the aperture of working as pipeline is positioned on the liquid level, and the other end is outside liquid level the time, can lead to negative-pressure container, the pressure of negative-pressure gas and the difference of atmospheric pressure are B in the negative-pressure container, on the liquid level Outer Tube section, establish the logical atmosphere of suction port, suction port is apart from the height difference of liquid level, less than or much smaller than the height that produces the water column that pressure equates with the B value, pipeline is higher than inlet hole and partly is straight tube, and waste pipe is established in the negative-pressure container bottom, and waste pipe is a hollow large diameter pipe, under the logical water container liquid level of the waste pipe the other end, the water container position is lower than negative-pressure container, and with the water column of water container liquid level to negative-pressure container distance from bottom equal altitudes, the pressure values of generation is greater than the B value.Regulate the suction port air inflow and arrive to a certain degree, gas, water are mixed into pipeline to negative-pressure container, and gas is taken away, and water supplies to utilize to water container through waste pipe again, and is same, just can be used as the water pump use in the U-shaped channel.
Further, inlet hole is apart from the height difference of liquid level, less than or much smaller than negative pressure source of the gas and difference that atmospheric pressure produces the height of corresponding liquid.
Further, it is straight tube that above-mentioned pipeline is higher than inlet hole above, and the diameter of pipeline is less than 2mm.
In addition, also have two kinds of gas generation apparatus:
A kind of positive U-shaped pipe gas-collecting device, positive U-shaped pipe has water inlet place and water outlet place, the pipe diameter of water outlet place and transverse tube is greater than the pipe diameter of water inlet place, water inlet place also is air inlet place, transverse tube top at positive U type pipe is provided with the place of giving vent to anger, the place of giving vent to anger is positioned at the end of the transverse tube of positive U type pipe near low water level, and water inlet place of this gas collecting device and water outlet place are arranged in the liquid level up and down of U-shaped channel head difference respectively.
In addition, also has a kind of reverse-U-shaped tube gas-collecting device, reverse-U-shaped tube has water inlet place and water outlet place is intake everywhere in the liquid level at a water source, and water outlet is everywhere in sluicing water channel liquid level, the pipe diameter of water outlet place is greater than the pipe diameter of water inlet place, be higher than at the transverse tube of inverted U pipe on the tube wall of water water source liquid level into air inlet place is set, water outlet place also is the place of giving vent to anger, as shown in Figure 1, air inlet place is positioned at the end of the transverse tube of inverted U pipe near low water level, and water inlet place of this gas collecting device and water outlet place are arranged in the liquid level up and down of U-shaped channel head difference respectively.
Effect of the present invention and characteristics are: in the U-shaped canal can with draw water or water lift to high position more, need not the fuel feeding power supply, equipment can turn round voluntarily, and equipment needed thereby is little, the energy conversion rate height, investment return is than little, and is applied widely, non-maintaining.
Description of drawings:
Fig. 1 is first embodiment's of a kind of water plug that is used for a U-shaped canal of the present invention schematic representation;
Fig. 2 is a kind of schematic representation that is used for the water plug of U-shaped canal of the present invention;
Fig. 3 be a kind of water plug that is used for the U-shaped canal of the present invention the liquid energy collection method and the positive U-shaped tubular construction schematic representation of device;
Fig. 4 be a kind of water plug that is used for the U-shaped canal of the present invention the liquid energy collection method and the reverse-U-shaped tube structural representation of device.
Illustrate among the figure:
1 is pipeline A; 2 is inlet hole A; 3 is pipeline B; 4 is negative-pressure container B; 41 is bleeder hole B; 5 is suction port B; 6 is waste pipe B; 7 is water container B; 8 is transverse tube C; 9 are air inlet place C; 10 are the C of place that gives vent to anger; 11 are water inlet place C; 12 are water outlet place C; 13 is transverse tube D; 14 are air inlet place D; 15 are the D of place that gives vent to anger; 16 are water outlet place D; 17 is water outlet D; 101,102 is the U-shaped canal.
Embodiment:
Based on purpose of the present invention, and the successful test data that has obtained, come principle of specification and working condition from following two embodiments.
The water plug of U-shaped channel of the present invention and method, mainly can form by water pump by U-shaped channel and current, current can be made up of pipeline by water pump, and be erected at U-shaped channel 101, in 102, as accompanying drawing 1, shown in 2, because U-shaped channel 101,102 all have drop, that is to say at U-shaped channel 101, utilize a head difference in 102, water plug (current energy water pump) can be placed on U-shaped channel 101 along water (flow) direction so, in 102, be to go out water outlet on current energy water pump has, the two outlet on top and bottom mouth lays respectively at U-shaped channel 101, the liquid level up and down of head difference in 102 can water pump be finished by current and to be drawn water or water lift.
Current of the present invention can water pump be as power with the body of calming the anger, drive that liquid flows, difference according to gas and atmospheric pressure can be divided into two big classes: malleation drives and negative pressure drives, in an embodiment of the present invention, embodiment one drives for malleation, embodiment two can select different working methods according to the difference of actual conditions for negative pressure drives, and this dual mode can reach same similar effects.
For embodiment one, this structure of cobasis as shown in Figure 1: main structure mainly is made up of pipeline A1, and pipeline A1 one end is logical atmosphere outside liquid level, and liquid is water in an embodiment of the present invention, for needs draw water or the predetermined altitude of water lift; The other end (underpart) is under liquid level, wave molding among Fig. 1 is expressed as liquid (as follows), go up most an expression liquid level, pipeline A1 establishes inlet hole A2 on subsurface one section, and be connected with the body of calming the anger, it is A that the pressure of the body of calming the anger and the difference of atmospheric pressure are arranged, be that this has the pressure of the body of calming the anger powerful than barometric pressure, and big quantitative value is A, the unit of measurement of A is the height value in the pipeline of liquid, and inlet hole A2 is to the height difference of liquid level, less than or much smaller than the height of the water column that has the body generation pressure of calming the anger to equate with the A value, just inlet hole A2 is to the height difference of liquid level, less than or much smaller than the height difference of inlet hole A2 to lower end of duct portion.If in the aperture of pipeline, feed the body of calming the anger, and work as water column two ends gas pressure intensity not simultaneously, water column will be to the less end motion of pressure, the one section extreme lower position of pipeline A1 under inlet hole A2 is apart from the height difference of inlet hole, just inlet hole A2 is apart from the height difference of the lower end mouth of pipeline A1, greater than the height of the water column that has the body generation pressure of calming the anger to equate with the A value, like this, when inlet hole A2 is connected with pressurized air source, just may normally upwards drive liquid.
In addition, pipeline A1 is higher than inlet hole A2 and partly is straight tube, be in order to reduce resistance, regulating inlet hole A2 air inflow arrives to a certain degree, gas, water are mixed in the part that pipeline A1 is higher than inlet hole A2, and under the effect that the body pressure reduction of calming the anger is arranged, an end that moves in pipe outside the liquid level of top is discharged, and repeats above drainage procedure automatically.Water just has been transported to book office for utilizing like this, reaches to draw water or the purpose of water lift.
Simultaneously,, can be manufactured in together, perhaps fixing bunchy greater than 2 pipeline A1 because the quantity of pipeline A1 can be greater than 2, and can the water yield as required accelerate.Therefore, can very easily reach required quantity of drawing water.
For embodiment two, as shown in Figure 2: pipeline B3 one end is under liquid level; The other end is outside liquid level, and logical negative-pressure container B4, negative-pressure container B4 is provided with bleeder hole B41, can connect the negative pressure source of the gas, the pressure of negative-pressure gas and the difference of atmospheric pressure are B in the negative-pressure container B4, that is to say that the pressure of negative-pressure gas is more less than atmospheric pressure, and little quantitative value is B, and the unit of measurement of B is the interior height value of pipeline of liquid.On liquid level Outer Tube B3 section, establish the logical atmosphere of suction port B5.Suction port B5 is apart from the height difference of liquid level, less than or produce the height of the water column that pressure equates with the B value much smaller than negative-pressure gas, that is to say, inlet hole B5 is apart from the height difference of liquid level, less than or much smaller than negative pressure source of the gas and difference that atmospheric pressure produces the height of corresponding liquid, pipeline B3 is higher than inlet hole and partly is straight tube, negative-pressure container B4 establishes waste pipe B6 in the bottom, and (waste pipe B6 is a hollow large diameter pipe, internal diameter arrives the holder of abutment surface tension force greatly, can not form stable water column in the pipe), under the logical water container B7 liquid level of the waste pipe B6 the other end, water container B6 is for needing the book office of water, water container B7 position is lower than negative-pressure container B4, with the water column of water container B7 liquid level to negative-pressure container B4 distance from bottom equal altitudes, the pressure values that produces is greater than the B value, regulating suction port B5 air inflow arrives to a certain degree, gas, water is mixed into pipeline B3, and under the effect of pressure reduction, in pipe, move to negative-pressure container B4, gas is taken away, water again through waste pipe B6 to water container B7 for utilizing, so just realized drawing water or the purpose of water lift.This installs once startup, repeats above drainage procedure automatically.
Equally, because the quantity of pipeline B3 also can be greater than 2, and can the water yield as required accelerate, therefore, can very easily reach required quantity of drawing water.
In all embodiments involved in the present invention, described liquid or fluid are water.
In order to cooperate above-mentioned device to finish its function, two kinds of air feeders also are provided here simultaneously, can be respectively applied for above-mentioned two embodiments, do explanation below respectively.
In above-mentioned two embodiments, embodiment one has used barotropic gas, embodiment two has used negative-pressure gas, we can say to be exactly a kind of draught head energy, and the production method of draught head energy is, one pipeline is set passes through liquid, and be provided with air inlet place that communicates with atmosphere, when liquid passes through, but overcurrent liquid entrained gas and divided gas flow in the pipeline become small bubble, setting the gravity accleration direction is the postive direction of speed, liquid velocity then is the resultant velocity at the component of the component of gravity accleration Vertical direction and substantially horizontal so, when liquid at the component of gravity accleration Vertical direction greater than zero, bubble be separated into gradually certain volume than small bubble the time, bubble will move with liquid; When liquid when the component of gravity accleration Vertical direction is not more than zero, bubble moves upward and emerges, overflow the collection of water surface place at bubble and overflow gas, to be formed with the body of calming the anger, air inlet place at pipeline also can produce negative pressure, like this, the kinetic energy of being contained in the liquid, potential energy just are collected and are converted to the draught head energy that comprises positive differential pressure or Negative Pressure Difference, and this draught head energy can drive other device as power.
Now reaching accompanying drawing in conjunction with the embodiments describes, mainly form based on the device that the method for the invention is made by pipeline, be positive U-shaped pipe or reverse-U-shaped tube, as shown in Figure 3 and Figure 4, wherein Fig. 3 is positive U-shaped pipe, and Fig. 4 is a reverse-U-shaped tube, two mouths of pipe of these two kinds of U-shaped pipes have certain height difference, the height of water intake is higher than the height of water outlet, and water intake is positioned at the high water level face, and water outlet is positioned at the low water level face.
For embodiment one, employing be that following device is finished air feed.
For embodiment one, if pipeline is positive U-shaped pipe, positive U-shaped pipe has a water inlet place C11 and water outlet place C12, the pipe diameter of water outlet place C12 and transverse tube C8 is greater than the pipe diameter of water inlet place C11, water inlet place C11 also is air inlet place C9, on the transverse tube C8 top of positive U type pipe the C10 of place that gives vent to anger is set, as shown in Figure 2, the C10 of the place of giving vent to anger is positioned at the end of the transverse tube C8 of positive U type pipe near low water level, and water inlet place of this gas collecting device and water outlet place are arranged in the liquid level up and down of U-shaped channel 101,102 head difference respectively.
When water intake C11 and water outlet C12 lay respectively at the last water level of the water surface and following water level, liquid can be crossed positive U-shaped pipe by spontaneous current, upstream and downstream liquid produces by water inlet place C11 and water outlet place C12 and flows, gas in the atmosphere also is blended in the liquid by air inlet place C9 and goes at this moment, the liquid that just has gas to enter in the pipe goes, promptly when liquid passes through, but flowing water entrained gas excessively and divided gas flow in the pipeline become small bubble, setting the gravity accleration direction is the postive direction of speed, liquid velocity then is the resultant velocity at the component of the component of gravity accleration Vertical direction and substantially horizontal so, when liquid at the component of gravity accleration Vertical direction greater than zero, bubble be separated into gradually certain volume than small bubble the time, bubble will move with liquid; When arriving transverse tube C8, because water outlet place C12, the diameter of transverse tube C8 is bigger, flow velocity reduces gradually, promptly when liquid when the component of gravity accleration Vertical direction is not more than zero, bubble moves upward and emerges, overflow the collection of water surface place at bubble and overflow gas, to be formed with the body of calming the anger, and discharge that to focus on the C10 of the place of giving vent to anger be bubble overflowing liquid place, just form the barotropic gas that significantly is higher than atmospheric pressure,, just obtain the positive differential pressure that continues if liquid in pipe continues to flow, this pressure difference value just can utilize and do work, that is to say, the C10 of the place of giving vent to anger is connected to inlet hole A2, just can allow water plug work shown in Figure 1, simultaneously, at air inlet place C9 place negative pressure appearance is arranged.
For embodiment two, adopt following device to carry out air feed (supplying negative voltage gas).
For embodiment two, if pipeline is a reverse-U-shaped tube, reverse-U-shaped tube has the liquid level that a water inlet place D16 and water outlet place D17 water inlet place 16D are in a water source, and water outlet place D17 is in sluicing water channel liquid level, the pipe diameter of water outlet place D17 is greater than the pipe diameter of water inlet place D16, be higher than at the transverse tube D13 of inverted U pipe on the tube wall of water water source liquid level into air inlet place D14 is set, water outlet place D16 also is the D15 of place that gives vent to anger, as shown in Figure 1, air inlet place D14 is positioned at the end of the transverse tube D13 of inverted U pipe near low water level, and water inlet place of this gas collecting device and water outlet place are positioned at U-shaped channel 101 respectively, the liquid level up and down of head difference in 102.
When water intake D16 and water outlet D17 lay respectively at the last water level of the water surface and following water level, make air inlet place D14 be in closed condition, in reverse-U-shaped tube, add fills with water, owing to producing by water inlet place D16 and water outlet place D17, siphonage flows between the upstream and downstream liquid, after treating liquid stabilising, suitably open air inlet place D14, the D14 of air inlet place at this moment communicates with atmosphere, when liquid passes through, but flowing water entrained gas excessively and divided gas flow in the pipeline become small bubble, setting the gravity accleration direction is the postive direction of speed, liquid velocity then is the resultant velocity at the component of the component of gravity accleration Vertical direction and substantially horizontal so, when liquid at the component of gravity accleration Vertical direction greater than zero, bubble be separated into gradually certain volume than small bubble the time, bubble will move with liquid; When arriving water outlet place D17, because the diameter of water outlet place D17 is bigger, flow rate of liquid reduces, when liquid is not more than zero at the component of gravity accleration Vertical direction, bubble moves upward and emerges, overflow the collection of water surface place at bubble and overflow gas, to be formed with the body of calming the anger, and be discharged to big automatically or collection by the D15 of the place of giving vent to anger, intraluminal fluid is known from experience and lasting flowing, and will will produce continuous tangible negative-pressure air-flow, the Negative Pressure Difference that obtains continuing this moment at air inlet place D14, this pressure difference value just can utilize and do work, that is to say, air inlet place D14 is connected to bleeder hole B41, just can allow water plug work shown in Figure 2, simultaneously, at the D15 of the place of giving vent to anger the malleation phenomenon is arranged.
In order to make the liquid stabilising in above-mentioned reverse-U-shaped tube or the positive U-shaped pipe, the port at reverse-U-shaped tube air inlet place D14 and positive U-shaped pipe air inlet place C9 is provided with intake-air quantity control apparatus, air inflow that can pilot line.
The pipeline material therefor is the most convenient with PVC in the foregoing description.But simultaneously piping material also can be nonmetallic material such as plastics, cement, pottery, and cast iron, stainless steel and other metal materials.
Adopt method and apparatus of the present invention, draught head can be collected and be converted to kinetic energy, the potential energy contained in the liquid easily can be with further utilization, especially for U-shaped channel 101,102 draw water or water lift in go, and equipment needed thereby is little, the energy conversion rate height, investment return is than little, and is applied widely, non-maintaining.
Though a preferred embodiment of the present invention only has been described here, its meaning be not limit the scope of the invention, applicability and configuration.On the contrary, the detailed description to embodiment can make those skilled in the art be implemented.Will be understood that not departing under the definite spirit and scope of the invention situation of appended claims, can make suitable change and modification some details.
Claims (10)
1. the water plug of a U-shaped channel is characterized in that: mainly can be made up of by water pump U-shaped channel and current, current energy water pump is made up of pipeline, and is erected in the U-shaped channel.
2. the water plug of a kind of U-shaped channel according to claim 1, it is characterized in that: in the U-shaped channel, utilize a head difference, be to go out water outlet on gas collecting device that current can water pump has, the two outlet on top and bottom mouth lays respectively at the liquid level up and down of head difference in the U-shaped channel, is finished by current energy water pump and draws water or water lift.
3. the pumping method of a U-shaped channel, it is characterized in that: the current that are provided with in the U-shaped canal can water pump constitutes a pipeline, pipeline is made up of the pipeline more than or two at least, each pipeline is provided with aperture, this pipeline is placed in the liquid, when the aperture of pipeline is positioned at liquid level following time, in pipeline, can form one section water column, in the aperture of pipeline, feed the body of calming the anger this moment, and work as water column two ends gas pressure intensity not simultaneously, water column will be to the less end motion of pressure, and the water that moves to the precalculated position can be collected utilization.Like this, draught head can just be used as energy source fortune water and supply to utilize to eminence or predetermined part, just can be used as water pump and use in the U-shaped channel.
4. the pumping method of a kind of U-shaped channel according to claim 3 is characterized in that: inlet hole is to the height difference of liquid level, less than or height difference much smaller than inlet hole to lower end of duct portion.
5. the pumping method of a kind of U-shaped channel according to claim 3 is characterized in that: further, above-mentioned pipeline is higher than inlet hole and partly is straight tube, and the internal diameter of pipeline is 2-10mm.
6. the pumping method of a U-shaped channel, it is characterized in that: the current that are provided with in the U-shaped canal can water pump constitutes a pipeline, pipeline is made up of one or more pipeline at least, each pipeline is provided with aperture, this pipeline is placed in the liquid, pipeline one end is under liquid level, and the aperture of working as pipeline is positioned on the liquid level, and the other end is outside liquid level the time, can lead to negative-pressure container, the pressure of negative-pressure gas and the difference of atmospheric pressure are B in the negative-pressure container, on the liquid level Outer Tube section, establish the logical atmosphere of suction port, suction port is apart from the height difference of liquid level, less than or much smaller than the height that produces the water column that pressure equates with the B value, pipeline is higher than inlet hole and partly is straight tube, and waste pipe is established in the negative-pressure container bottom, and waste pipe is a hollow large diameter pipe, under the logical water container liquid level of the waste pipe the other end, the water container position is lower than negative-pressure container, and with the water column of water container liquid level to negative-pressure container distance from bottom equal altitudes, the pressure values of generation is greater than the B value.Regulate the suction port air inflow and arrive to a certain degree, gas, water are mixed into pipeline to negative-pressure container, and gas is taken away, and water supplies to utilize to water container through waste pipe again, and is same, just can be used as the water pump use in the U-shaped channel.
7. the pumping method of a kind of U-shaped channel as claimed in claim 6 is characterized in that: inlet hole is apart from the height difference of liquid level, less than or much smaller than negative pressure source of the gas and difference that atmospheric pressure produces the height of corresponding liquid.
8. the pumping method of a kind of U-shaped channel as claimed in claim 6 is characterized in that: it is straight tube that above-mentioned pipeline is higher than inlet hole above, and the diameter of pipeline is less than 2mm.
9. gas collecting device that is used for the water plug of U-shaped channel, it is characterized in that: positive U-shaped pipe has water inlet place and water outlet place, the pipe diameter of water outlet place and transverse tube is greater than the pipe diameter of water inlet place, water inlet place also is air inlet place, transverse tube top at positive U type pipe is provided with the place of giving vent to anger, the place of giving vent to anger is positioned at the end of the transverse tube of positive U type pipe near low water level, and water inlet place of this gas collecting device and water outlet place are arranged in the liquid level up and down of U-shaped channel head difference respectively.
10. gas collecting device that is used for the water plug of U-shaped channel, it is characterized in that: a kind of reverse-U-shaped tube gas-collecting device, reverse-U-shaped tube has water inlet place and water outlet place is intake everywhere in the liquid level at a water source, and water outlet is everywhere in sluicing water channel liquid level, the pipe diameter of water outlet place is greater than the pipe diameter of water inlet place, be higher than at the transverse tube of inverted U pipe on the tube wall of water water source liquid level into air inlet place is set, water outlet place also is the place of giving vent to anger, as shown in Figure 1, air inlet place is positioned at the end of the transverse tube of inverted U pipe near low water level, and water inlet place of this gas collecting device and water outlet place are arranged in the liquid level up and down of U-shaped channel head difference respectively.
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| CN2010102069126A CN102297163A (en) | 2010-06-23 | 2010-06-23 | Water pumping device and method for U-shaped channel |
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| CN2010102069126A CN102297163A (en) | 2010-06-23 | 2010-06-23 | Water pumping device and method for U-shaped channel |
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| CN105494037A (en) * | 2016-01-28 | 2016-04-20 | 谭朝晖 | Watering device for controlling flow velocity by utilizing potential difference pressure and liquid surface tension |
| CN106332734A (en) * | 2016-10-26 | 2017-01-18 | 中国农业科学院农业资源与农业区划研究所 | Device for maintaining constant negative pressure irrigation |
| CN106416965A (en) * | 2016-10-26 | 2017-02-22 | 中国农业科学院农业资源与农业区划研究所 | Method for maintaining constant-negative-pressure irrigation |
| CN106609773A (en) * | 2015-10-27 | 2017-05-03 | 北京水创新能科技有限责任公司 | Device for pumping water under action of under-pressure gas |
| CN107524919A (en) * | 2017-08-16 | 2017-12-29 | 朱伟明 | Pipeline fluid flow velocity speed increasing method and pipeline fluid induction system |
| CN109457677A (en) * | 2019-01-03 | 2019-03-12 | 吴世雄 | Using high-speed flow as the pipeline water delivery device and its water-conveying method of water flow carrier |
| CN112931170A (en) * | 2021-02-04 | 2021-06-11 | 中国农业科学院农业资源与农业区划研究所 | Negative pressure irrigation system for forming negative pressure irrigation emitter by utilizing soil |
| CN115387296A (en) * | 2021-05-16 | 2022-11-25 | 李飞 | Dam migration channel |
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