CN2846492Y - Sand filling device mud and sand model test - Google Patents
Sand filling device mud and sand model test Download PDFInfo
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- CN2846492Y CN2846492Y CN 200520096584 CN200520096584U CN2846492Y CN 2846492 Y CN2846492 Y CN 2846492Y CN 200520096584 CN200520096584 CN 200520096584 CN 200520096584 U CN200520096584 U CN 200520096584U CN 2846492 Y CN2846492 Y CN 2846492Y
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- sand
- model
- gaza
- sediment
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Abstract
The utility model relates to a test sand filling device for a sand model, which has the structure that a single-screw pump which is connected with a sand conveying pipe is adopted between a sand filling working pool and an inlet reach of the sand model, and the single-screw pump is electrically connected with a variable frequency speed regulating controller. The utility model is controlled by adopting the single-screw pump in the mode of variable frequency speed regulation, and compared with a traditional sand filing device, the utility model has the advantages of electricity saving, high control precision and high automation. A sand filling device which is formed by adopting the utility model has the advantages of simple structure, flexible composing and low cost of the sand filling device. The utility model is suitable for various sand models and various model sand, and the concentration range of the model sand which can be conveyed is much greater than the concentration range of the traditional sand filing device.
Description
Technology
The utility model relates to a river sediment sediment model test model fitted Gaza
Position.
BACKGROUND
River sediment model test requires inlet flow and sediment control model, based on the separation of water and sediment
Sediment model test systems, the need to test the sediment transport rate according to the model, the model of the mold inlet section
Type model by adding a certain concentration of sand to mix with the water entering the model to achieve the test
Sediment needed.
Currently sediment model test apparatus is used in Gaza and measurement of sediment separated from the sand in the model
Delivery area is used for sand circulation mode, which uses high-powered mud to a certain concentration of mold
Type of sand transported to import the model, then the excess sand transported back to the Gaza model work pool; square in the measurement
Surface is made of artificial rate based on pre-determined combination of valve opening, adjusting the amount of sediment entering the model (Figure
1). There is also an electric valves control the flow size, electromagnetic flowmeter measurement (Figure 2). Eye
Gaza before the existing main problem is the power unit, the control is not convenient, the control accuracy is not high, easy
Blockage. The main cause of the problem is: where power consumption because the use of the loop
The way for the sand, this approach requires high-power mud run continuously, regardless of the model needs
Sediment size, in order to prevent clogging pipes, pipes must be kept high concentrations of sediment flow.
Yangtze flood control model for sediment system, for example, the Yangtze River flood control model has seven pumping stations in Gaza, using cycle
Ring craft designed for sand Gaza systems, system 1 #, 2 # Gaza pumping stations are used 4PN
Type mud pump, a single motor power 75kw, single consumption 1800 kWh / day, the system
4 # --- 7 # Gaza have adopted 3PN type pump mud pump, a single motor power 30kw,
Model tests for sand system consumes nearly 6,500 degree days, we can see that such a device energy giant
Large. Only this time sediment model test will cost a few million to several hundred thousand dollars. Control accuracy is not high in
Manually adjust the valve opening when the valve opening is due to a combination limited; in the use of electric valve control
Size of the flow, the combination of electromagnetic flowmeter electromagnetic flowmeter is due to errors in the small flow
Increase, or even undetectable. The model is due to the blockage of Gaza flows generally large amplitude,
Therefore need to adjust the valve opening range is also large. Manual control valve opening Gaza, is in the loop
Pipe diameter ranging in size directly open the aperture, in which small-diameter orifice plugging occurs frequently
Plug, while the use of electric valves control the flow, when a small flow, the valve needs to shut very small, the other
The combination of electromagnetic flowmeter to the outlet pipe from the presence of circulating a "cecal segment," while
By the electromagnetic flowmeter conditions of use (the pipeline must be filled with liquid), low flow runtime
It is prone to clogging, the event will be very difficult to clear blockage. Therefore, this combination is rarely used
Way, the use of this combination, you must put sediment concentrations low enough before being
Normal operation.
...
Currently sediment model test apparatus is used in Gaza and measurement of sediment separated from the sand in the model
Delivery area is used for sand circulation mode, which uses high-powered mud to a certain concentration of mold
Type of sand transported to import the model, then the excess sand transported back to the Gaza model work pool; square in the measurement
Surface is made of artificial rate based on pre-determined combination of valve opening, adjusting the amount of sediment entering the model (Figure
1). There is also an electric valves control the flow size, electromagnetic flowmeter measurement (Figure 2). Eye
Gaza before the existing main problem is the power unit, the control is not convenient, the control accuracy is not high, easy
Blockage. The main cause of the problem is: where power consumption because the use of the loop
The way for the sand, this approach requires high-power mud run continuously, regardless of the model needs
Sediment size, in order to prevent clogging pipes, pipes must be kept high concentrations of sediment flow.
Yangtze flood control model for sediment system, for example, the Yangtze River flood control model has seven pumping stations in Gaza, using cycle
Ring craft designed for sand Gaza systems, system 1 #, 2 # Gaza pumping stations are used 4PN
Type mud pump, a single motor power 75kw, single consumption 1800 kWh / day, the system
4 # --- 7 # Gaza have adopted 3PN type pump mud pump, a single motor power 30kw,
Model tests for sand system consumes nearly 6,500 degree days, we can see that such a device energy giant
Large. Only this time sediment model test will cost a few million to several hundred thousand dollars. Control accuracy is not high in
Manually adjust the valve opening when the valve opening is due to a combination limited; in the use of electric valve control
Size of the flow, the combination of electromagnetic flowmeter electromagnetic flowmeter is due to errors in the small flow
Increase, or even undetectable. The model is due to the blockage of Gaza flows generally large amplitude,
Therefore need to adjust the valve opening range is also large. Manual control valve opening Gaza, is in the loop
Pipe diameter ranging in size directly open the aperture, in which small-diameter orifice plugging occurs frequently
Plug, while the use of electric valves control the flow, when a small flow, the valve needs to shut very small, the other
The combination of electromagnetic flowmeter to the outlet pipe from the presence of circulating a "cecal segment," while
By the electromagnetic flowmeter conditions of use (the pipeline must be filled with liquid), low flow runtime
It is prone to clogging, the event will be very difficult to clear blockage. Therefore, this combination is rarely used
Way, the use of this combination, you must put sediment concentrations low enough before being
Normal operation.
...
The utility model aims to solve the existing river sediment loading model tests Gaza
Set inadequacies, and provide a model test sediment Gaza devices. The device uses a single screw
Rod pump frequency control, the model sediment transport and metering combined, can do quantitative transmission
Model sediment, in addition, regardless of flow rate, the apparatus constant diameter sediment, effectively preventing the
Small flow blockage occurs. Single screw pump frequency control, a good solution to the above problems.
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In the above technical solution, the single screw pump with variable speed controller electrically connected.
In the above technical solution, the single screw pipe connections are unidirectional sediment tube.
The utility model sediment model test Gaza device has the following advantages: ①, the device can
Project cost savings: the traditional sediment and measurement devices Gaza separated by mud sediment in addition to outside,
Also need to start the auxiliary pump mud. Also relatively coarse sediment diameter, measuring the need to use
Electromagnetic flow meter and electric valves and other equipment. The device measures combined with sediment, you can save
Equipment and materials. From Figure 1, Figure 2 and Figure 3 can be seen in comparison, pipe installation can be saved
Half, other equipment installed can be omitted. Because the size of the system, the amount of different sizes inconvenience than Gaza
Over, but you can give a comparative concept, a set of single-screw pump frequency control system (G20-1
Plus inverter) cost (about 8000 yuan), less than a cost of small-caliber electromagnetic flowmeter
(About 10,000 yuan).
...
②, the device can save usage charges: former Gaza devices work, regardless of the amount of Gaza
Size, mud pump must be working at full capacity, while the use of single-screw pump frequency control plus
Sand unit size of the amount in accordance with the Gaza adjust the pump output flow, effectively saving energy. With
Yangtze River flood control model for sediment system, for example, the Yangtze River flood control model has seven pumping stations in Gaza, the original use of the old
Gaza, Gaza craft designed device, 1 #, 2 # Gaza have adopted 4PN of mud pump,
A single motor power 75kw, single consumption 1800 kWh / day, 4 # --- 7 # Gaza pumping stations are
3PN of using mud, a single motor power 30kw, model test for the Gaza power
270KW, only sand system consumes nearly 6,500 degree days, using a single screw Frequency Control
Gaza device accomplish the same task, the design shared four G20-1 (4 × 0.75KW) and 5 units
G20-2 (5 × 1.1KW), Gaza maximum power of 8.5KW, plus the work pool stirring motor power
Rate, the total power of 22KW. Moreover, the model more than 80% of Gaza is a small flow, so the actual power
Consumption also decreases. Generally the device and the power consumption of the conventional apparatus Gaza ratio of about 1/8 to
About 1/15.
...
③, other features of the device: From the experimental point of view, using a single screw pump frequency control
Flow control means controls Gaza convenient control repeatability, high control precision, the new device Jane
Single, flexible, high degree of automation, it is easy to connect with the computer, and automatic control. Contrast
Former Gaza device with the use of artificial openings regulate traffic compared Gaza to overcome its low precision, control
System inconvenient problem. With the use of a combination of electromagnetic flowmeters and electric valves regulate flow compared to Gaza,
Solve the original system easy to block small flow problems, than electromagnetic flow meter and electric valve design portfolio
Prepare low-cost, easy to control. Confirmed by experiment: Gaza device because using a single screw,
Sand can be adapted to a variety of models, the model can be transported sediment concentration is much greater than the concentration of slurry pump can deliver
Degrees, coupled with a high-tech frequency control technology, processes and therefore have a very new device Gaza
Many excellent features, is expected to replace the Gaza devices.
...
③, other features of the device: From the experimental point of view, using a single screw pump frequency control
Flow control means controls Gaza convenient control repeatability, high control precision, the new device Jane
Single, flexible, high degree of automation, it is easy to connect with the computer, and automatic control. Contrast
Former Gaza device with the use of artificial openings regulate traffic compared Gaza to overcome its low precision, control
System inconvenient problem. With the use of a combination of electromagnetic flowmeters and electric valves regulate flow compared to Gaza,
Solve the original system easy to block small flow problems, than electromagnetic flow meter and electric valve design portfolio
Prepare low-cost, easy to control. Confirmed by experiment: Gaza device because using a single screw,
Sand can be adapted to a variety of models, the model can be transported sediment concentration is much greater than the concentration of slurry pump can deliver
Degrees, coupled with a high-tech frequency control technology, processes and therefore have a very new device Gaza
Many excellent features, is expected to replace the Gaza devices.
...
Figure 1 is used to manually adjust the existing degree of opening of Gaza device schematic;
Figure 2 shows the existing use of electromagnetic flow meter and electric valves regulate the flow of the Gaza device structure
Diagram;
Figure 3 is a utility using a single screw pump frequency control device structure is shown in Gaza
Intentions.
Figure 4 is a single-screw pump of the rotor and stator rotation angle change map;
Figure 5 is a schematic diagram of a single screw pump.
Figure 5 is a schematic diagram of a single screw pump....
Figure 5 is a schematic diagram of a single screw pump....
Figure 1 is a work in Gaza pool, 2 mixers, three of mud, four as a model import, 5
Is drift tube, 6 is a manual control valve, an electromagnetic flowmeter 7, 8 for the electric valve 9 is single spiral
Rod pump, 10 for the frequency converter.
Figure 1 is a work in Gaza pool, 2 mixers, three of mud, four as a model import, 5
Is drift tube, 6 is a manual control valve, an electromagnetic flowmeter 7, 8 for the electric valve 9 is single spiral
Rod pump, 10 for the frequency converter....
Figure 1 is a work in Gaza pool, 2 mixers, three of mud, four as a model import, 5
Is drift tube, 6 is a manual control valve, an electromagnetic flowmeter 7, 8 for the electric valve 9 is single spiral
Rod pump, 10 for the frequency converter....
Referring to Figure 4, Figure 5 shows: a special cavity helical surface having a large elastic stator guide
Cheng large teeth meshed high rotor in the stator cavity of a continuous sealing line the suction chamber and the pressure
Separated by a cavity, the cavity when the rotor rotates continuously in the discharge direction, so that the material is continuously drawn
Suction and being discharged.
...
Referring to Figure 4, Figure 5 shows: a special cavity helical surface having a large elastic stator guide
Cheng large teeth meshed high rotor in the stator cavity of a continuous sealing line the suction chamber and the pressure
Separated by a cavity, the cavity when the rotor rotates continuously in the discharge direction, so that the material is continuously drawn
Suction and being discharged.
...
Single screw pump features: single-screw pump is widely used in industrial sectors, it is the biggest
Feature is the adaptability of the media, the running speed can be high or low, smooth flow, pressure pulsation,
Since the absorption capacity, which is a rotary displacement pump the ring.
...
Governor common methods: Due to the speed control of single screw pump and metering, so
Comparison of the speed control method. Governor common methods are: mechanical governor, DC motor speed control,
Stepper motor, AC servo motor, AC variable speed and so on. Mechanical governor general
Fixed ratio, require manual operation, not suitable for automatic control. Small power, the use of DC speed
More convenient, but also easy to control, but the power of the motor costs, control power costs, a substantial
Degree rise. Stepper motors can be accurately quantified, especially for low-speed control quantified, but the
Control problems, high cost, there is not much power, electrical products. AC servo motor speed is
Currently, the new development of the speed control method, the main problem is the complete cost too much. AC frequency converter has
Used for many years, has been formed from tens of watts to hundreds of kilowatts of the series. With joint ventures and
Domestic production of the inverter has introduced, drive prices have dropped a lot, so from
Versatility and cost considerations, the choice of AC frequency control method is better.
...
Governor common methods: Due to the speed control of single screw pump and metering, so
Comparison of the speed control method. Governor common methods are: mechanical governor, DC motor speed control,
Stepper motor, AC servo motor, AC variable speed and so on. Mechanical governor general
Fixed ratio, require manual operation, not suitable for automatic control. Small power, the use of DC speed
More convenient, but also easy to control, but the power of the motor costs, control power costs, a substantial
Degree rise. Stepper motors can be accurately quantified, especially for low-speed control quantified, but the
Control problems, high cost, there is not much power, electrical products. AC servo motor speed is
Currently, the new development of the speed control method, the main problem is the complete cost too much. AC frequency converter has
Used for many years, has been formed from tens of watts to hundreds of kilowatts of the series. With joint ventures and
Domestic production of the inverter has introduced, drive prices have dropped a lot, so from
Versatility and cost considerations, the choice of AC frequency control method is better.
...
Test equipment and systems: selected a G20-1-type single screw and a magnetic flux vector control
AC drive system as the research object, with a single screw pump outlet and the pump outlet
Same diameter diameter length of 50 meters of piping back to work pool constitutes test system. Single
Screw and AC drives performance and features are listed below.
Test equipment and systems: selected a G20-1-type single screw and a magnetic flux vector control
AC drive system as the research object, with a single screw pump outlet and the pump outlet
Same diameter diameter length of 50 meters of piping back to work pool constitutes test system. Single
Screw and AC drives performance and features are listed below....
| Test equipment and systems: selected a G20-1-type single screw and a magnetic flux vector control AC drive system as the research object, with a single screw pump outlet and the pump outlet Same diameter diameter length of 50 meters of piping back to work pool constitutes test system. Single Screw and AC drives performance and features are listed below.... | Speed r / min ... | Speed r / min ...3/h | Pressure Mpa | Pressure Mpa... | Pressure Mpa... | Import mm | Export mm |
| G20-1 | 960 | 1.7 | 0.6 | 0.75 | 60 | 25 | 25 |
Export
mm...
| Export mm... | Control Systems | Sine wave PWM mode can be chosen
1 |
| Starting torque | Starting torque at 0.5Hz than 150% | |
| Speed control range | 1:100 (external PG 1:1000) | |
| Speed control accuracy | ± 0.5% (PG add up ± 0.02%) | |
| ± 0.5% (PG add up ± 0.02%)... | ± 0.5% (PG add up ± 0.02%)... | |
| The maximum output frequency (Hz) | 0.00-400.00 | |
| Maximum output accuracy | Digital command ± 0.005%, ± 0.5% analog instruction | |
| Frequency setting resolution | Digital instruction 0.01Hz, Analog command: maximum output frequency of 1/1000 | |
| Torque limit | Torque limit... | |
| Torque limit... | ±5％ | |
| Acceleration / deceleration time | 0.00-600.00/0.0-6000.0 seconds | |
| V / F curve | 4:00 arbitrary V / F curve & 2 power curve | |
| Frequency setting signal | +10 V, ± 10V ,4-20mA, pulse wave input | |
| +10 V, ± 10V ,4-20mA, pulse wave input... | +10 V, ± 10V ,4-20mA, pulse wave input... | |
| Insurance Protect Special Sex | Insurance Protect Special Sex... | Insurance Protect Special Sex... |
| Overcurrent protection ... | Overcurrent protection ... | |
| Ground leakage current protection | ||
| Ground leakage current protection... | Ground leakage current protection... | |
| Voltage Protection | Overvoltage level: Vdc> 400/800V, | |
| Input supply overvoltage protection | Varistor (MOV) | |
| Varistor (MOV)... | Varistor (MOV)... | |
| Instantaneous power compensation | Parameter setting of up to 5 seconds |
Test content and conclusions:
1, single screw pump speed and flow relationships verification test, the conclusion is a good linear relationship.
Can control the speed way to achieve the purpose of flow control.
2, single screw pump output flow outlet resistance change on the impact test, the conclusion is the pump
The output pressure range, the extended range of resistance has no effect on the flow changes, when the pipeline pressure exceeds
Pump output pressure, the flow rate began to become smaller.
3, changes in sediment impact on the flow test and concluded that sediment in a wide range of
Variation of the flow rate is small.
4, long sediment test, the conclusion is in a certain range, through the appropriate technical measures
Shi sediment transport over long distances.
5, different types, different specific gravities, different size model sediment impact on the flow test,
Concluded that the change of flow model sediment has no effect.
6, single screw pump suction effect change on the output flow, the conclusion is slightly affected, but
Relatively little change, if necessary, can be calculated in proportion to compensate.
The overall conclusion is: single screw through frequency control, you can control the flow, you can use
In the sediment model Gaza.
It should be noted that: For the person skilled in the art, it does not alter the utility of new
Type theory, under the premise of the utility model can also make certain changes or deformation, which is the same
On the utility model protection.
Claims (3)
1, the sediment model test Gaza, characterized in that it is the work pool and models in Gaza
Imports river sediment transport connection between the use of single screw pipe.
2, according to claim 1, wherein the Gaza sediment model test apparatus, characterized in that
Said single screw pump with variable speed controller electrically connected.
3, according to claim 1 or 2, wherein the Gaza sediment model test apparatus, characterized in that
Single screw pump connected to said one-way pipe sediment tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096584 CN2846492Y (en) | 2005-05-31 | 2005-05-31 | Sand filling device mud and sand model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096584 CN2846492Y (en) | 2005-05-31 | 2005-05-31 | Sand filling device mud and sand model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846492Y true CN2846492Y (en) | 2006-12-13 |
Family
ID=37511911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520096584 Expired - Fee Related CN2846492Y (en) | 2005-05-31 | 2005-05-31 | Sand filling device mud and sand model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846492Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493390A (en) * | 2011-12-30 | 2012-06-13 | 清华大学 | Device for adding sand to suspended load in river model test |
| CN102561252A (en) * | 2011-12-14 | 2012-07-11 | 清华大学 | Bed load sediment feeding device for river engineering model test |
-
2005
- 2005-05-31 CN CN 200520096584 patent/CN2846492Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561252A (en) * | 2011-12-14 | 2012-07-11 | 清华大学 | Bed load sediment feeding device for river engineering model test |
| CN102561252B (en) * | 2011-12-14 | 2014-01-29 | 清华大学 | Bed load sediment feeding device for river engineering model test |
| CN102493390A (en) * | 2011-12-30 | 2012-06-13 | 清华大学 | Device for adding sand to suspended load in river model test |
| CN102493390B (en) * | 2011-12-30 | 2014-03-12 | 清华大学 | Device for adding sand to suspended load in river model test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |