CN110115941B - Adopt venturi to increase gas-water mixing experimental apparatus of return water power - Google Patents
Adopt venturi to increase gas-water mixing experimental apparatus of return water power Download PDFInfo
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- CN110115941B CN110115941B CN201810112752.5A CN201810112752A CN110115941B CN 110115941 B CN110115941 B CN 110115941B CN 201810112752 A CN201810112752 A CN 201810112752A CN 110115941 B CN110115941 B CN 110115941B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/29—Mixing systems, i.e. flow charts or diagrams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
- B01F25/31233—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements used successively
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2211—Amount of delivered fluid during a period
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a gas-water mixing experimental device for increasing backwater power by adopting a venturi, which comprises a water pump, a water pump water outlet pipe, a tee joint valve, an experimental circulating waterway connecting pipe, a rotameter, an experimental venturi, a white scale plate, a check valve, a split-flow circulating waterway connecting pipe, an elbow, an injection backwater venturi, a water tank water inlet pipe, a water tank water inlet, a water tank water outlet, a water tank, a water pump water inlet pipe and a guide bracket. The total running water output by the water pump is split into main running water (experimental circulating water) and split running water (split circulating water), the main running water flows along an experimental circulating waterway, and after the experiment is finished, the main running water reaches an injection backwater venturi throat injection hole; the diversion water flows through the throat of the backwater venturi tube along the diversion circulating waterway, and the venturi effect is utilized to jet the main flow water, so that the main flow water and the diversion water are converged and then flow to the water tank for the next circulation. The device reduces the useless consumption of reposition of redundant personnel water, increases experimental test scope, effectively retrieves the experiment water, ensures that the experiment is gone on safely.
Description
Technical Field
The invention relates to a gas-water mixing experimental device, in particular to a gas-water mixing experimental device for increasing backwater power by using a Venturi.
Background
In the experimental research process by adopting the venturi tube gas-water mixing experimental device, the flow of the circulating waterway needs to be changed, the injection ratio of the venturi tube under different working conditions is researched, or the flow condition of injection bubbles in the venturi tube is observed, and the cavitation share is calculated. However, for the existing experimental device, the circulating water pump usually used cannot realize variable frequency adjustment, and is a water pump with constant power and rotation speed, so the flow adjustment mode is bypass adjustment, namely, a water outlet pipe of the water pump is connected with a shunt pipe, so that part of water flows out of a total waterway, and the purpose of adjusting the water flow flowing through an experimental venturi tube is achieved. However, this method has the following drawbacks: the split water occupies part of the power of the circulating water pump, and useless power consumption in the experimental process is increased; under the condition of a longer connecting pipe structure, the output and the lift provided by the water pump are larger and limited by the backwater pressure of the water tank, the inlet and outlet pressures of the experimental venturi tube are higher, and the injection performance under the low working condition cannot be measured. Therefore, an experimental device for reducing the shunt useless power consumption, increasing the experimental test range and the backwater power becomes a need for technical innovation in the field.
Disclosure of Invention
The invention provides a gas-water mixing experimental device for increasing backwater power by adopting a venturi, which aims to solve the problems of the gas-water mixing experimental device and realize the effects of reducing useless power consumption of diversion, increasing experimental test range and backwater power.
In order to meet the standard requirements, the scheme adopted by the invention is as follows:
adopt venturi increase return water power's gas-water mixing experimental apparatus, its characterized in that: the device comprises a water pump 1, a water pump water outlet pipe 2, a tee joint 3, a three-way valve 4, an experiment circulating water channel connecting pipe A5, an experiment circulating water channel connecting pipe B6, an experiment circulating water channel connecting pipe three c7, an experiment circulating water channel connecting pipe four d8, an experiment circulating water channel connecting pipe five e9, an experiment circulating water channel connecting pipe six f10, an experiment circulating water channel connecting pipe seven g11, an experiment circulating water channel connecting pipe eight h12, an elbow A13, an elbow B14, an elbow three c15, an elbow four d16, a rotor flowmeter 17, an experiment venturi 18, a white scale plate 19, a check valve A20, a split circulating water channel connecting pipe A21, a split circulating water channel connecting pipe B22, a split circulating water channel connecting pipe three c23, an elbow five e24, an elbow six f25, an injection backwater venturi 26, a water tank inlet pipe A27, a water tank inlet pipe B28, a check valve B29, a water tank water inlet 30, a water tank outlet 31, a water tank 32, a water pump inlet 33, a guide bracket A34 and a guide bracket B35; the water pump 1 is connected to the water tank 32 through the water pump water inlet pipe 33, the water pump 1 is connected to the tee joint 3 through the water pump water outlet pipe 2, vertical port of the tee joint 3, experimental circulating water path connecting pipe a5, the rotor flowmeter 17, experimental circulating water path connecting pipe b6, elbow a13, experimental circulating water path connecting pipe tri c7, experimental venturi 18, experimental circulating water path connecting pipe d8, check valve a20, experimental circulating water path connecting pipe five e9, elbow b14, experimental circulating water path connecting pipe hexaf 10, elbow tri c15, experimental circulating water path connecting pipe seven g11, elbow d16, experimental circulating water path connecting pipe octahedral 12 are sequentially connected, the whole experimental circulating water path is formed, horizontal port of the tee joint 3, shunt circulating water path connecting pipe a21, elbow five e24, shunt circulating water path connecting pipe b22, elbow hexaf 25, shunt circulating water path connecting pipe tri c23 are sequentially connected with the end of the experimental circulating water path eight h12 and the side leading of the venturi 26, the shunt circulating water path tri c23 is connected with the end of the tapering venturi 26, the shunt circulating water path is sequentially connected with the end of the first venturi 27 b, the water tank 27 is connected with the second water tank 28, the first water tank 27 is connected with the water tank 27, and the second water tank 28 is connected with the water tank 28, and the water tank 28 is connected with the second water tank 27.
And the joint of each device and each pipeline in the experimental device adopts a flange connection structure with a flexible sealing gasket.
Each connecting pipe in the experimental device is a stainless steel water pipe with a circular cross section, and each elbow is a right-angle stainless steel elbow with a circular cross section.
The three-way valve 4 is arranged on the three-way valve 3, and the opening degree of the three-way valve is adjusted to change the water flow flowing into the experimental circulating waterway connecting pipe a5, so that experimental parameters required under different working conditions are met.
The experimental circulating waterway connecting pipe seven g11 is provided with a first guide bracket a34 and a second guide bracket b35, and the connecting pipe is supported while no displacement is ensured in other directions except the axial direction.
The experimental venturi tube 18 is projected along the observation direction, and a white scale plate 19 is arranged on the rear background of the experimental venturi tube.
The water tank 32 is provided with two ports, namely a water tank water inlet 30 and a water tank water outlet 31, wherein the water inlet is positioned at the upper part of the side surface of the water tank, and the water outlet is positioned at the lower part of the other side surface of the water tank.
The experimental device divides water, namely divides circulating water, forms a low-pressure area through the throat part of the injection backwater venturi tube, and injects main circulating water (experimental circulating water) by means of internal and external pressure difference, so that backwater power is increased.
The experimental device divides water, namely, divides circulating water, forms a low-pressure area through the throat part of the injection backwater venturi tube, and the outlet pressure of the experimental venturi tube is reduced along with the reduction of the pressure in the area, so that the adjusting range of the inlet pressure and the outlet pressure of the experimental venturi tube is enlarged.
The experimental device comprises a main flow water, namely experimental circulating water, which flows along an experimental circulating water path, namely, sequentially flows through a vertical port of a tee joint 3, an experimental circulating water path connecting pipe A5, a rotameter 17, an experimental circulating water path connecting pipe B6, an elbow A13, an experimental circulating water path connecting pipe C7, an experimental venturi 18, an experimental circulating water path connecting pipe D8, a check valve A20, an experimental circulating water path connecting pipe five e9, an elbow B14, an experimental circulating water path connecting pipe six f10, an elbow C15, an experimental circulating water path connecting pipe seven g11, an elbow D16 and an experimental circulating water path connecting pipe eight h12 until the throat of a backwater venturi 26 is injected; the diversion water flows along the diversion circulating waterway, namely, the diversion circulating waterway sequentially flows through the horizontal port of the tee joint 3, the first diversion circulating waterway connecting pipe a21, the elbow five e24, the second diversion circulating waterway connecting pipe b22, the elbow six f25 and the diversion circulating waterway connecting pipe three c23 until the throat of the backwater venturi 26 is ejected, the main flow backwater is ejected by the venturi effect, and the main flow backwater and the diversion water are converged and then flow to the water tank 32 for the next circulation.
Compared with the prior art, the invention has the following advantages:
by utilizing the method of ejecting backwater by the ejecting backwater venturi tube, backwater power is increased, and the backwater effect is improved, and meanwhile, the kinetic energy of the split backwater, namely split circulating water, is utilized; the adjustment range of the inlet and outlet pressure of the experimental venturi tube is enlarged, and the injection performance of the venturi tube under low working conditions is measured; the closed structure replaces the open structure, so that the cleaning of an experiment circulating waterway is ensured, and the experiment precision is improved; the water inlets and the water outlets of the water tanks are staggered, so that the air inlet of the water pump is prevented, and the maximum output of the water pump is ensured; the back pipelines of the diverging ends of the two venturi tubes are all provided with check valves, so that water in the back pipelines is prevented from flowing back to the throat low-pressure area, and the safe performance of experiments is ensured.
Drawings
FIG. 1 is a front view of a gas-water mixing experimental device employing a venturi to increase backwater power in accordance with the present invention;
FIG. 2 is a front cross-sectional view of an ejector backwater venturi tube in a gas-water mixing experimental device for increasing backwater power by using a venturi;
FIG. 3 is a front cross-sectional view of a tee joint in an experimental device for gas-water mixing by using venturi to increase backwater power.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention relates to a gas-water mixing experimental device for increasing backwater power by adopting a Venturi, which comprises a water pump 1, a water pump water outlet pipe 2, a tee joint 3, a tee joint valve 4, an experimental circulating waterway connecting pipe A5, an experimental circulating waterway connecting pipe B6, an experimental circulating waterway connecting pipe three c7, an experimental circulating waterway connecting pipe four d8, an experimental circulating waterway connecting pipe five e9, an experimental circulating waterway connecting pipe six f10, an experimental circulating waterway connecting pipe seven g11, an experimental circulating waterway connecting pipe eight h12, an elbow one a13, an elbow two b14, an elbow three c15, an elbow four d16, a rotameter 17, an experimental venturi 18, a white scale 19, a check valve one a20, a shunt circulating waterway connecting pipe one a21, a shunt circulating waterway connecting pipe two b22, a shunt circulating waterway connecting pipe three c23, an elbow five e24, an elbow six f25, an injection backwater venturi 26, a water inlet pipe one a27, a water inlet pipe two b28, a check valve two b29, a water inlet 30, a water outlet 31, a water tank 32, a water pump 33, a guide bracket one a34 and a guide bracket two b35. By adopting the venturi water-gas mixing experimental device for increasing backwater power, after the water pump 1 is started, the output circulating water is split into main flowing water, namely experimental circulating water, and split flowing water, namely split circulating water. The main running water flows along the first experimental circulating waterway connecting pipe a5 to the eighth experimental circulating waterway connecting pipe eighth h12, and flows to the side surface guiding port of the throat part of the injection backwater venturi 26 after the experiment is completed; the diversion water flows along the direction from the diversion circulation waterway connecting pipe a21 to the diversion circulation waterway connecting pipe three c23, and the venturi effect is utilized to jet experimental waterway backwater at the throat part of the jet backwater venturi 26, so that the main diversion water and the diversion water are converged and then flow to the water tank 32 for the next circulation.
As a preferred embodiment of the invention, the structure of the device is shown in figure 1, the water pump water outlet pipe 2 and the tee joint 3 are sequentially connected, and the tee joint 3 is provided with a tee joint valve 4. The vertical port of the tee joint 3, the first experimental circulating waterway connecting pipe a5, the rotameter 17, the second experimental circulating waterway connecting pipe b6, the elbow a13, the third experimental circulating waterway connecting pipe c7, the experimental venturi tube 18, the fourth experimental circulating waterway connecting pipe d8, the first check valve a20, the fifth experimental circulating waterway connecting pipe e9, the second elbow b14, the sixth experimental circulating waterway connecting pipe f10, the third elbow c15, the seventh experimental circulating waterway connecting pipe g11, the fourth elbow d16 and the eighth experimental circulating waterway connecting pipe h12 are sequentially connected, and flange connection structures with flexible sealing gaskets are adopted at the joints to integrally form an experimental circulating waterway; the horizontal port of the tee joint 3, the first branch circulating waterway connecting pipe a21, the fifth elbow 24, the second branch circulating waterway connecting pipe b22, the sixth elbow f25 and the third branch circulating waterway connecting pipe c23 are sequentially connected, and flange connection structures with flexible sealing gaskets are adopted at the joints, so that the whole branch circulating waterway is formed. Each connecting pipe in the experimental device is a stainless steel water pipe with a circular cross section, and each elbow is a right-angle stainless steel elbow with a circular cross section. The tail end of the experimental circulating waterway connecting pipe eight h12 is communicated with the side guiding hole of the throat part of the injection backwater venturi tube 26, the diversion circulating waterway connecting pipe three c23 is connected with the convergent end of the injection backwater venturi tube 26, the divergent port of the injection backwater venturi tube 26 is connected with the water tank water inlet pipe one a27, and the water tank water inlet pipe two b28 is communicated with the water tank 32. A check valve b29 is arranged between the first water tank inlet pipe a27 and the second water tank inlet pipe b 28; seven g11 of the experimental circulating waterway connecting pipe is provided with a first guide bracket a34 and a second guide bracket b35; a white scale 19 is arranged at the rear of the experimental venturi 18.
Referring to fig. 1, a specific working procedure is as follows, after a water pump 1 is started, output circulating water flows to a tee joint 3 through a water pump outlet pipe 2, and water pump outlet water is split to an experiment circulating waterway and a split circulating waterway from the tee joint 3. The three-way valve 4 on the three-way valve 3 can adjust the water flow of the experimental circulating water way, and the change of the experimental circulating water flow is realized by adjusting the opening of the three-way valve 4, so that the real-time adjustment is carried out according to the experimental parameter requirement; the split circulation water flow is the difference value between the total waterway flow and the experimental circulation waterway flow. The experimental water flows through the rotameter 17 along the circulating waterway, and the flow value is observed and recorded; the injection of gas or liquid is realized through the experimental venturi tube 18, the movement character of bubbles is observed, and the proportion and injection ratio of the bubbles are researched; flows to the tail end of the experiment circulating water path, and is ejected by the split-flow circulating water at the side-injection hole of the throat part of the ejection backwater venturi tube 26. The diversion water flows to the throat of the injection backwater venturi tube 26 along the flow direction of the circulating waterway, and the venturi effect is utilized to inject backwater of the experimental circulating waterway, so that backwater power is increased, and the confluence of the main diversion water and the diversion water is realized. The return water is merged and flows to the water tank 32 for the next cycle. The back of the experimental venturi tube 18 is provided with a check valve A20, and the back of the injection backwater venturi tube 26 is provided with a check valve B29, so that the backwater in the back pipeline is prevented from flowing back to the low-pressure area of the throat part of the venturi tube.
Referring to fig. 2, the converging end and the diverging end of the injection backwater venturi 26 are respectively connected with the three c23 ends of the split circulation waterway connecting pipe and the first a27 of the water tank water inlet pipe, and the injection hole on the side surface of the throat part is communicated with the eight h12 ends of the experimental circulation waterway connecting pipe. The injection principle is that when the split water flows along the circulating waterway to flow through the contraction section of the injection backwater venturi 26, the circulating water increases in speed at the throat part due to the contraction of the flow section, so that a low-pressure area is formed, and the experimental waterway backwater water is injected into the venturi through the injection hole under the combined action of the pressure difference between the inner side and the outer side of the injection hole and the continuous acting of the water pump 1, so that the two waterways are converged and flow to the water tank 32 along the water tank water inlet pipe b 28.
Referring to fig. 3, the water pump outlet pipe 2 is used as a reference, a three-way port communicated with the water pump outlet pipe 2 by a flange structure is used as a lower port, and circulating water flowing through the port through the water pump outlet pipe 2 is total flowing water; the three-way port parallel to the axis direction of the water outlet pipe 2 of the water pump is a vertical port, the port is communicated with the initial end of the first a5 connecting pipe of the experimental circulating water path through a flange structure, a part of total flowing water flows through the port to enter the first a5 connecting pipe of the experimental circulating water, and the part of circulating water is main flow water, namely experimental circulating water; the three-way port parallel to the diameter direction of the water outlet pipe 2 of the water pump is a horizontal port, the port is communicated with the initial end of the first a21 of the split-flow circulating water path connecting pipe by a flange structure, and the other part of total flowing water flows through the port to enter the first a21 of the split-flow circulating water connecting pipe, and the part of circulating water is split-flow water, namely split-flow circulating water.
In summary, compared with the conventional air-water mixing experimental device, the invention increases the backwater power by utilizing the pressure difference of the backwater ejected by the backwater ejected venturi tube, improves the backwater effect and simultaneously makes use of the kinetic energy of the split water; the low pressure formed in the throat part when the injection backwater venturi tube injects backwater is utilized to further reduce the outlet pressure of the experimental venturi tube, enlarge the adjustment range of the inlet and outlet pressure of the experimental venturi tube, and realize the measurement of the injection performance of the venturi tube under low working conditions; the closed structure replaces the open structure, so that the cleaning of an experiment waterway is ensured, and the experiment precision is improved; the water inlet and the water outlet of the water tank are staggered, and backwater with air is gathered at the upper part of the water tank, so that the air inlet of the water pump is prevented, and the maximum output of the water pump is ensured; the back pipelines of the diverging ends of the two venturi tubes are all provided with check valves, so that water in the back pipelines is prevented from flowing back to the throat low-pressure area, and the safe performance of experiments is ensured.
Claims (8)
1. Adopt venturi increase return water power's gas-water mixing experimental apparatus, its characterized in that: the device comprises a water pump (1), a water pump water outlet pipe (2), a tee joint (3), a tee joint valve (4), an experimental circulating waterway connecting pipe I (a 5), an experimental circulating waterway connecting pipe II (b 6), an experimental circulating waterway connecting pipe III (c 7), an experimental circulating waterway connecting pipe IV (d 8), an experimental circulating waterway connecting pipe V (e 9), an experimental circulating waterway connecting pipe V (f 10), an experimental circulating waterway connecting pipe V (g 11), an experimental circulating waterway connecting pipe V (h 12), an elbow I (a 13), an elbow II (b 14), an elbow III (c 15), an elbow IV (d 16), a rotor flowmeter (17), an experimental venturi tube (18), a white scale plate (19), a check valve I (a 20), a shunt circulating waterway connecting pipe I (a 21), a shunt circulating waterway connecting pipe II (b 22), a shunt circulating waterway connecting pipe III (c 23), an elbow V (e 24), an elbow V (f 25), a backwater venturi tube (26), a water tank inlet pipe I (a 27), a water tank inlet pipe II (b 28), a check valve II (b 29), a water tank inlet (30), a water tank outlet (31), a water tank (32), a water inlet pipe (33) and a guide bracket II (a 35 b; the water pump (1) is connected to the water tank (32) through the water pump water inlet pipe (33), the water pump (1) is connected to the tee joint (3) through the water pump water outlet pipe (2), the vertical port of the tee joint (3), the experimental circulating water path connecting pipe I (a 5), the rotor flowmeter (17), the experimental circulating water path connecting pipe II (b 6), the elbow I (a 13), the experimental circulating water path connecting pipe III (c 7), the experimental venturi tube (18), the experimental circulating water path connecting pipe IV (d 8), the check valve I (a 20), the experimental circulating water path connecting pipe V (e 9), the elbow II (b 14), the experimental circulating water path connecting pipe VI (f 10), the elbow III (c 15), the experimental circulating water path connecting pipe seven (g 11), the elbow IV (d 16) and the experimental circulating water path connecting pipe VIII (h 12) are sequentially connected, the horizontal port of the experimental circulating water path connecting pipe I (a 21), the elbow V (e 24), the shunt circulating water path connecting pipe II (b 22), the six (f 25) and the shunt circulating water path III (c 23) are sequentially connected, the end of the experimental circulating water path eighth (h 12) is sequentially connected with the injection port of the venturi tube (c) and the water return port (c) of the side surface of the injection pipe (26), the experimental circulating waterway and the split circulating waterway are communicated and collected at the throat part of the injection backwater venturi tube (26), the divergent port of the injection backwater venturi tube (26) is connected with a first water inlet pipe (a 27) of the water tank, a second water inlet pipe (b 28) of the water tank is communicated with the water tank (32), and a second check valve (b 29) is arranged between the first water inlet pipe (a 27) of the water tank and the second water inlet pipe (b 28) of the water tank; all equipment and pipeline joints in the experimental device adopt flange connection structures with flexible sealing gaskets; each connecting pipe in the experimental device is a stainless steel water pipe with a circular cross section, and each elbow is a right-angle stainless steel elbow with a circular cross section.
2. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the three-way valve (4) is arranged on the three-way valve (3), and the opening degree of the three-way valve is adjusted to change the water flow flowing into the experimental circulating waterway connecting pipe I (a 5), so that experimental parameters required under different working conditions are met.
3. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the experimental circulating waterway connecting pipe seven (g 11) is provided with a first guide bracket (a 34) and a second guide bracket (b 35), and the connecting pipe is supported while no displacement is ensured in other directions except the axial direction.
4. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the experimental venturi tube (18) is projected along the observation direction, and a white scale plate (19) is arranged on the background of the experimental venturi tube.
5. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the water tank (32) is provided with two ports, namely a water tank water inlet (30) and a water tank water outlet (31), wherein the water inlet is positioned at the upper part of the side surface of the water tank, and the water outlet is positioned at the lower part of the other side surface of the water tank.
6. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the experimental device divides water, namely divides circulating water, forms a low-pressure area through the throat part of the injection backwater venturi tube (26), and injects main flowing water, namely experimental circulating water, by means of internal and external pressure difference, so that backwater power is increased.
7. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the experimental device divides water, namely, divides circulating water, forms a low-pressure area through the throat part of the injection backwater venturi tube (26), and the outlet pressure of the experimental venturi tube (18) is reduced along with the reduction of the pressure in the area, so that the adjusting range of the inlet pressure and the outlet pressure of the experimental venturi tube (18) is enlarged.
8. The air-water mixing experimental device adopting venturi to increase backwater power according to claim 1, wherein the air-water mixing experimental device comprises: the experimental device comprises an experimental device, wherein main flow water, namely experimental circulating water, flows along an experimental circulating water path, namely sequentially flows through a vertical port of a tee joint (3), an experimental circulating water path connecting pipe I (a 5), a rotameter (17), an experimental circulating water path connecting pipe II (b 6), an elbow I (a 13), an experimental circulating water path connecting pipe III (c 7), an experimental venturi tube (18), an experimental circulating water path connecting pipe IV (d 8), a check valve I (a 20), an experimental circulating water path connecting pipe V (e 9), an elbow II (b 14), an experimental circulating water path connecting pipe VI (f 10), an elbow III (c 15), an experimental circulating water path connecting pipe V (g 11), an elbow IV (d 16) and an experimental circulating water path eight (h 12) until a throat part of a backwater venturi tube (26) is injected; the diversion water flows along the diversion circulating waterway, namely, flows through a horizontal port of the tee joint (3), a first diversion circulating waterway connecting pipe (a 21), a fifth elbow (e 24), a second diversion circulating waterway connecting pipe (b 22), a sixth elbow (f 25) and a third diversion circulating waterway connecting pipe (c 23) in sequence until the throat of the backwater venturi tube (26) is ejected, main backwater is ejected by utilizing the venturi effect, and the main backwater and the diversion water are converged and then flow to the water tank (32) for the next circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112752.5A CN110115941B (en) | 2018-02-05 | 2018-02-05 | Adopt venturi to increase gas-water mixing experimental apparatus of return water power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112752.5A CN110115941B (en) | 2018-02-05 | 2018-02-05 | Adopt venturi to increase gas-water mixing experimental apparatus of return water power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110115941A CN110115941A (en) | 2019-08-13 |
| CN110115941B true CN110115941B (en) | 2024-01-26 |
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