CN202393436U - Testing system special for coal water slurry - Google Patents
Testing system special for coal water slurry Download PDFInfo
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- CN202393436U CN202393436U CN2011205435302U CN201120543530U CN202393436U CN 202393436 U CN202393436 U CN 202393436U CN 2011205435302 U CN2011205435302 U CN 2011205435302U CN 201120543530 U CN201120543530 U CN 201120543530U CN 202393436 U CN202393436 U CN 202393436U
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- coal water
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Abstract
The utility model relates to a testing system special for coal water slurry; an electromagnetic flow unit and a target-type flow unit are arranged on a straight tube section orderly; and an average flow value in a predetermined time range output by the electromagnetic flow unit and a fluid action force output by the target-type flow unit are output to an intelligent processor and are judged by the intelligent processor so as to output a flow signal. According to the utility model adopting the above-mentioned technical proposal, the testing system not only exploits original technical advantages of a target-type flow meter, but also has measuring precision of an electromagnetic flow meter simultaneously; therefore, phenomenon of ''false zero returning'' is avoided being appeared while measuring coal water slurry medium; and stable flow output is ensured.
Description
Technical field
The utility model belongs to the liquid flow mearuement field, particularly solves a kind of special intelligent test macro of coal water mixture rate-of flow metering.
Background technology
Electromagnetic flowmeter is a flow-meter, and it is based on electromagnetic induction principle work, is usually used in measuring the flow of water or liquid-solid two-phase medium.Because its tool is with characteristics such as simple in structure, accurate height, industrial processes such as chemical industry, oil, iron and steel, metallurgy automatically in the control quilt be used widely, so the Coal Chemical Industry industry adopts electromagnetic flowmeter to detect the feed status of coal water mixture more.But owing to use reciprocating pump, flow into pulse state, the output pulsation of render electrical magnetic flowmeter is bigger; Simultaneously again because coal contains impurity such as metallic particles in mining process; When solid particle or fiber medium nuzzle up electrode surface; Induction electromotive force is changed suddenly; Thereby cause electromagnetic flowmeter can occur the short time often and export back zero phenomenon; But this moment, flow reality did not stop (we are called this phenomenon " vacation returns zero "), and then started the security alerting system of production run control and the normal operation that pressure stops a whole set of production equipment automatically, had brought unnecessary stress and bigger economic loss to enterprise.
Summary of the invention
The purpose of the utility model is to set up the special intelligent test macro of a cover to the coal water mixture medium, thereby solves the international headache of coal water mixture Medium Measurement.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The utility model sets gradually Electromagnetic Flow unit and target-type flow unit on straight length; Export in the intelligent processor fluid force value of average flow value in the setting-up time section of said Electromagnetic Flow unit output and the output of target-type flow unit to after intelligent processor judgment processing delivery rate signal.
Described intelligent processor is arranged in the explosion-proof aluminum shell body.
Adopt the utility model of technique scheme; Not only brought into play target type meter original technique advantage; The accuracy of measurement that has possessed simultaneously electromagnetic flowmeter again, " false return zero " phenomenon of having avoided when measuring the coal water mixture medium, occurring has guaranteed stable flow rate output.
Description of drawings
Fig. 1 is the theory diagram of the utility model.
Embodiment
As shown in Figure 1; On straight length 1, set gradually Electromagnetic Flow unit 2 and target-type flow unit 3; Export in the intelligent processor 4 the fluid force value of average flow value in the setting-up time section of Electromagnetic Flow unit 2 outputs and 3 outputs of target-type flow unit to after intelligent processor 4 judgment processing delivery rate signal.
Wherein, Electromagnetic Flow unit 2 is a prior art, and the measuring principle of target-type flow unit 3 is different with the Electromagnetic Flow unit, and it is in measuring tube, to lay a target plate; The acting force of target plate is confirmed fluid flow through test fluid during through measuring tube; Mainly be applicable to high viscosity, the flow measurement of low reynolds number fluid has characteristics highly sensitive, anti-interference, anti-impurity.
Above-mentioned intelligent processor 4 is arranged in the circular explosion-proof aluminum shell body, adopts direct current 12～24V power supply, liquid crystal display, and 4 buttons can carry out relevant parameters and set; 4 set of connections terminals are respectively that 1 group of power input, 2 groups of 4～20mA input signal terminals connect the output signal of Electromagnetic Flow unit and target-type flow unit, 1 group of 4～20mA output signal end respectively.Target-type flow unit and Electromagnetic Flow element output signal are inserted in the intelligent processor, after two signals are carried out logic determines and optimization process, finally obtain a stable flow rate output signal more.
The principle of work of the utility model is: the two-way simulating signal of Electromagnetic Flow unit 2 with 3 outputs of target-type flow unit inserted in the intelligent processor respectively.Under the normal condition, the mean value of trying to achieve by the setting-up time section with the output of Electromagnetic Flow unit will significantly reduce the fluctuation of delivery rate like this as the output valve of whole test system; When zero situation appears back in the Electromagnetic Flow unit, judge that with the signal of target-type flow unit whether the Electromagnetic Flow unit is " false return zero ", as not being then to continue the current mean value of output; In this way, then ignore the false zero-signal of Electromagnetic Flow unit, continue its previous mean value of output, to reach the purpose of filtering " false time zero ".
Claims (2)
1. coal water mixture special test system; It is characterized in that: on straight length (1), set gradually Electromagnetic Flow unit (2) and target-type flow unit (3); Export in the intelligent processor (4) the fluid force value of the average flow value in the setting-up time section of said Electromagnetic Flow unit (2) output and target-type flow unit (3) output to after intelligent processor (4) judgment processing delivery rate signal.
2. coal water mixture special test system according to claim 1 is characterized in that: described intelligent processor (4) is arranged in the explosion-proof aluminum shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205435302U CN202393436U (en) | 2011-12-22 | 2011-12-22 | Testing system special for coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205435302U CN202393436U (en) | 2011-12-22 | 2011-12-22 | Testing system special for coal water slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393436U true CN202393436U (en) | 2012-08-22 |
Family
ID=46668352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205435302U Expired - Fee Related CN202393436U (en) | 2011-12-22 | 2011-12-22 | Testing system special for coal water slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202393436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478280A (en) * | 2017-08-17 | 2017-12-15 | 合肥工业大学 | A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave |
-
2011
- 2011-12-22 CN CN2011205435302U patent/CN202393436U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478280A (en) * | 2017-08-17 | 2017-12-15 | 合肥工业大学 | A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave |
| CN107478280B (en) * | 2017-08-17 | 2019-07-16 | 合肥工业大学 | A kind of water-coal-slurry electromagnetic flowmeter signal processing method based on the analysis of excitation frequency higher hamonic wave |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20191222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |