CN207881921U - A kind of test device of tailing critical flow velocity - Google Patents
A kind of test device of tailing critical flow velocity Download PDFInfo
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- CN207881921U CN207881921U CN201721564561.XU CN201721564561U CN207881921U CN 207881921 U CN207881921 U CN 207881921U CN 201721564561 U CN201721564561 U CN 201721564561U CN 207881921 U CN207881921 U CN 207881921U
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- pulp
- flow velocity
- critical flow
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- plc controller
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Abstract
The utility model provides a kind of test device of tailing critical flow velocity, which is mainly made of stirred tank, frequency conversion Pulp pump, hopper, L-type stainless steel pipes, electromagnetic flowmeter, pulp density sensor, signal picker, PLC controller.The test method includes successively：The ore pulp of certain mass concentration is prepared in stirred tank, after stirring evenly, it is pumped into hopper by frequency conversion Pulp pump, pulp gravity flow is to L-type stainless steel pipes, the ore pulp of outflow returns to stirred tank and carries out cycle pumping, the conveying flow velocity of ore pulp is gradually increased until ore pulp is less than 0.05 and obtains critical flow velocity certain flow velocity lower density value is very poor in pulp density under three pulp density sensor tests are different in flow rate.Method provided by the utility model overcomes error caused by traditional critical flow velocity calculating method, easy to operate, precision is high, while L-type stainless steel pipes pipeline can flexible assembling, the pulp conveying critical flow velocity under different tube diameters can be tested, guidance is provided for production design.
Description
Technical field
The utility model is related to tail-mineral pipeline transportation arts, more particularly, to a kind of test device of tailing critical flow velocity.
Background technology
Currently, the processing mode of crude tailings is mainly mine filling or Tailings Dam stockpiling, ore dressing plant is generally by low concentration
Tailings transportation is concentrated or is fed directly to Tailings Dam to solid-liquid separating equipment, often the distance of pipeline farther out, if
Meter personnel need using the critical flow velocity of tailing as design considerations, it is determined that when considering ore slurry pipeline conveying after critical flow velocity
Type selecting can be carried out to delivery pump and conveyance conduit, prevent tailing from being settled in pipe conveying procedure and causing plugging.It is critical
Flow velocity is also known as economic velocity, refers to the flow velocity that solid particle keeps suspended state without generating siltation in pipe conveying procedure.
When slurry pipeline steel flow velocity is less than critical flow velocity, there is sedimentation and ultimately causes plugging in solid particle.
Critical flow velocity is one of the important parameter in Slurry Pipeline Transportation System Engineering Design, to obtain this parameter country
Outer many scholars have carried out a large number of experiments research work to critical flow velocity, it is proposed that many empirical equations are such as：Duranty, Walter formula, lattice
Not formula, Tomas Formula are drawn, but the factor considered in each formula is not comprehensive enough, error is larger.In order to obtain tailing
Critical flow velocity, at present it is most common or prepare different quality concentration Tailings Pulp carry out circulating line experiment, this side
Method has that material time length, high material consumption, experimental site take up a large area.Therefore, how to provide it is a kind of compared with
The problem of for reasonable, easy fast and accurately tailing critical flow velocity test method at those skilled in the art's urgent need to resolve.
Utility model content
Deficiency based on existing method, the utility model problem to be solved be how to provide it is a kind of relatively reasonable, simple
Just the method for critical flow velocity that is quick, can accurately testing slurry.
In order to solve the above technical problems, the utility model provides a kind of test device of critical flow velocity, the device mainly by
Stirred tank, frequency conversion Pulp pump, hopper, L-type stainless steel pipes, electromagnetic flowmeter, pulp density sensor, signal picker,
PLC controller forms.The stirring trench bottom is tapered, prevents coarse granule tailing from depositing.The ore pulp mass concentration is
10%~65%.Electromagnetic flowmeter and three pulp density sensors, three ore pulps are connected in the L-type stainless steel pipes
The depth that density sensor is inserted in L-type stainless steel pipes is different.Three pulp density sensor accuracies are
0.1%, three pulp density sensor connection signal collectors.The signal picker connects PLC controller, PLC controller
Frequency control is carried out to frequency conversion Pulp pump simultaneously.Alert program is set in the PLC controller, when being acquired in signal picker
Density value it is very poor more than 0.05 when start to alarm.
Using the test method of the critical flow velocity of the test device of the utility model critical flow velocity, include the following steps：
（1）The ore pulp that certain mass concentration is configured in stirred tank, stirs evenly；
（2）Ore pulp is pumped in hopper by frequency conversion Pulp pump；
（3）Ore pulp is pumped into hopper, flow to L-type stainless steel pipes certainly, three pulp density sensor tests not cocurrent flow
The density of the lower ore pulp of speed, and signal picker is fed back to, by being shown in PLC controller and storing data；
（4）The flow velocity of pulp conveying is read in electromagnetic flowmeter, the ore pulp of outflow returns to stirred tank and carries out cycle pumping；
（5）The gradual conveying speed for increasing ore pulp just disappears up to alarm, stablizes after five minutes, reads ore pulp at this time
Conveying speed i.e. obtain critical flow velocity.
Compared with prior art, the utility model has the beneficial effects that：
1, L-type pipeline can with flexible assembling, can be assembled into as needed internal diameter be 100~300mm pipeline, size with
Practical application is consistent so that the data of test are more accurate.
2, slurry recycles during the experiment, saves the material needed for experiment, opposite collar experiment, the experimental system
Floor space is small, easy to operate.
Description of the drawings
Fig. 1 is a kind of layout of equipment of the test device and method of tailing critical flow velocity of the utility model.
Reference numeral correspondence in Fig. 1 is：1- stirred tanks, 2- frequency conversion Pulp pumps, 3- hoppers, 4-L type stainless steel tubes
Road, 5- electromagnetic flowmeters, 6-1 pulp density sensors, 7-2 pulp density sensors, 8-3 pulp density sensors,
9- signal pickers, 10-PLC controllers.
Fig. 2 is in specific embodiment of the present invention in the case that different in flow rate, and three pulp density sensors are adopted
Denseness of set data value changes with time.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, according to a kind of test device of critical flow velocity of the utility model one embodiment, including：
1- stirred tanks, the ore pulp for preparing certain mass concentration；
2- frequency conversion Pulp pumps, for pumping ore pulp；
3- hoppers, the ore pulp to be come by the pumping of frequency conversion Pulp pump, which proceeds in hopper, to be cached；
4-L type stainless steel pipes, the pulp gravity flow in hopper proceed to the conveying of L-type stainless steel pipes；
5- electromagnetic flowmeters are located on the horizontal segment of L-type stainless steel pipes, for measuring ore pulp in L-type stainless steel pipes
Flow velocity；
6~8- pulp density sensors are located at the horizontal segment bottom right angle setting of L-type stainless steel pipes, are inserted into pipeline
Internal position is different, for measuring ore pulp in different in flow rate, the density of variant lengthwise position ore pulp；
9- signal pickers are connected with pulp density sensor, for receiving and acquiring signal；
10-PLC controllers are connected with signal picker and frequency conversion Pulp pump, for being exported to signal, show each ore pulp
The numerical value of density sensor, while frequency conversion slurry pump frequency is controlled, control the flow velocity of pulp conveying.
Particularly, have program setting in PLC controller, when the density value acquired in signal picker it is very poor more than 0.05 when
Start to alarm.
As shown in Fig. 1, the test method according to a kind of critical flow velocity of the utility model one embodiment is as follows：Experiment
The preceding ore pulp that certain mass concentration is configured in stirred tank, stirs evenly；It is pumped in hopper, then flow automatically by frequency conversion Pulp pump
To L-type stainless steel pipes, the density of three pulp density sensor tests lower ore pulp different in flow rate, and feed back to signal acquisition
Device reads the flow velocity of pulp conveying, the ore pulp of outflow returns by the way that data are shown and stored in PLC controller in electromagnetic flowmeter
It returns stirred tank and carries out cycle pumping, after whole system is stablized, the gradual conveying speed for increasing ore pulp just disappears up to alarm,
Stablize after five minutes, the conveying speed of ore pulp is to obtain critical flow velocity at this time for reading.
Specific embodiment is as follows：
（1）According to schematic diagram shown in Fig. 1, by stirred tank, frequency conversion Pulp pump, hopper, L-type stainless steel pipes, electromagnetic current
Gauge, pulp density sensor, signal picker, PLC controller assembly and connection are good, check the leakproofness of pipeline, the L of use
Type stainless steel pipes caliber is 200mm；
（2）Certain Pb-Zn tailings ore pulp that mass concentration is 28% is prepared in stirred tank, by frequency conversion Pulp pump by ore slurry pump
It send into hopper；
（3）Ore pulp is pumped into hopper, flow to L-type stainless steel pipes certainly, three pulp density sensor test ore pulps
Density, and signal picker is fed back to, by the way that data are shown and stored in PLC controller, data processed result is as shown in Figure 2；
（4）The flow velocity of pulp conveying is read from electromagnetic flowmeter, the ore pulp of outflow returns to stirred tank and carries out cycle pumping；
（5）The gradual conveying speed for increasing ore pulp just disappears up to alarm, stablizes after five minutes, reads ore pulp at this time
Conveying speed i.e. obtain critical flow velocity.
To in this example, the flow velocity for preparing ore pulp is tested since 2.512m/s, alarm starts to alarm, and is gradually increased
Pulp conveying speed, when alarm just stop alarm, after stablizing 5min, the density value acquired in signal picker is very poor
Less than 0.05, at this time flow rate of pulp be 3.122m/s, therefore can determine the ore pulp caliber be 200mm caliber in convey face
Boundary's flow velocity is 3.122m/s.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of test device of tailing critical flow velocity, mainly by stirred tank（1）, frequency conversion Pulp pump（2）, hopper（3）, L-type not
Become rusty steel conduit（4）, electromagnetic flowmeter（5）, No. 1 pulp density sensor（6）, No. 2 pulp density sensors（7）, No. 3 ore pulps it is close
Spend sensor（8）, signal picker（9）, PLC controller（10）Composition；It is connected with electromagnetic current in the L-type stainless steel pipes
Gauge（5）And three pulp density sensors；Three pulp density sensor connection signal collectors（9）；The signal
Collector（9）Connect PLC controller（10）, PLC controller（10）Frequency control is carried out to frequency conversion Pulp pump simultaneously；Described
PLC controller（10）Middle setting alert program.
2. a kind of test device of tailing critical flow velocity according to claim 1, it is characterised in that：Three pulp densities pass
Sensor is inserted into L-type stainless steel pipes（4）In depth it is different.
3. a kind of test device of tailing critical flow velocity according to claim 1 or 2, it is characterised in that：PLC controller
（10）Middle setting alert program, when connection signal collector（9）The density value of middle acquisition it is very poor more than 0.05 when start to alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721564561.XU CN207881921U (en) | 2017-11-21 | 2017-11-21 | A kind of test device of tailing critical flow velocity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721564561.XU CN207881921U (en) | 2017-11-21 | 2017-11-21 | A kind of test device of tailing critical flow velocity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207881921U true CN207881921U (en) | 2018-09-18 |
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ID=63501052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721564561.XU Expired - Fee Related CN207881921U (en) | 2017-11-21 | 2017-11-21 | A kind of test device of tailing critical flow velocity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207881921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748056A (en) * | 2017-11-21 | 2018-03-02 | 长沙湘朴科技有限公司 | A kind of test device and method of mine tailing critical flow velocity |
| CN109459345A (en) * | 2018-11-19 | 2019-03-12 | 华北科技学院 | A kind of test device of tailings paste angle of dump slope |
-
2017
- 2017-11-21 CN CN201721564561.XU patent/CN207881921U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748056A (en) * | 2017-11-21 | 2018-03-02 | 长沙湘朴科技有限公司 | A kind of test device and method of mine tailing critical flow velocity |
| CN107748056B (en) * | 2017-11-21 | 2024-03-12 | 飞翼股份有限公司 | Device and method for testing critical flow velocity of tailings |
| CN109459345A (en) * | 2018-11-19 | 2019-03-12 | 华北科技学院 | A kind of test device of tailings paste angle of dump slope |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210219 Address after: 410006 office building of Feiyi Co., Ltd., Chuangye Avenue, Ningxiang Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: FENY Corp.,Ltd. Address before: No. 1502, Chuangye building, Ningxiang Economic and Technological Development Zone, Changsha, Hunan 410600 Patentee before: CHANGSHA XIANGPU TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20211121 |