CN201359589Y - Filtering factor detecting device of polymer solution - Google Patents

Abstract

A polymer solution filtration factor detection device. The invention solves the defects of poor measurement accuracy and inconvenient maintenance existing in the existing polymer filter factor measuring cylinder volumetric detection technology. The detection device of this polymer filter factor comprises electronic balance (5), controller (6), and described electronic balance (5) is connected with described controller (6) wire, is placed on the electronic balance (5) A liquid container (4), a liquid reservoir (2) is arranged above the liquid collector (4), the lower end of the liquid outlet of the liquid reservoir (2) is facing the upper opening of the liquid collector (4), and the liquid reservoir (2) ) has a filter membrane (3) at the inner bottom, and the upper end of the liquid reservoir (2) is sequentially connected with a solenoid valve (1), a pressure reducing valve (9) and a gas cylinder (8) through pipelines, and the controller (6) and the solenoid valve (1) connected. The device uses an electronic balance to weigh the quality of the polymer solution instead of measuring the volume with a measuring cylinder in the traditional technology, which improves the measurement accuracy and facilitates maintenance.

Description

A polymer solution filtration factor detection device

Technical field:

The utility model relates to a polymer solution filtration factor detection device.

Background technique:

Polymer solution filtration factor is one of the important indicators to evaluate the quality of polymer dry powder. If the filtration factor is unqualified, the formation will be blocked, which will lead to an increase in the injection pressure, and in severe cases, it will affect the normal injection of the polymer solution. The so-called filtration factor of the polymer solution means that under the action of 0.2MPa pressure, the polymer solution in the airtight container will pass through the nuclear pore filter membrane with a diameter of Ф47mm and a pore size of 3.0μm, drop into a 500ml graduated cylinder, and record the volume of the liquid in the graduated cylinder respectively. The times ΔT 100 , ΔT ₂₀₀ and ΔT 300 to reach 100ml, _200ml and _300ml , then define the filter factor N as:

$\mathrm{<span\; class="notranslate">\; N</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; \&Delta;T</span>}}_{\mathrm{<span\; class="notranslate">\; 300</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&Delta;T</span>}}_{\mathrm{<span\; class="notranslate">\; 200</span>}}}{{\mathrm{<span\; class="notranslate">\; \&Delta;T</span>}}_{\mathrm{<span\; class="notranslate">\; 200</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&Delta;T</span>}}_{\mathrm{<span\; class="notranslate">\; 100</span>}}}<span\; class="notranslate">\; .</span>$

At present, the filter factor is tested in the prior art, all adopt the graduated cylinder volumetric method, that is, use a graduated cylinder to record the volume of the solution, and then obtain the time T ₁₀₀ , T ₂₀₀ and T ₃₀₀ , and finally use a calculator to manually calculate the filter factor. The semi-automatic test is to install liquid level electrodes at the measuring cylinder volumes of 100ml, 200ml and 300ml respectively to automatically record the time when the liquid level reaches the place, and then use a calculator to manually calculate the filter factor. This volume measurement method has been found to have the following problems in practical applications: because the measuring cylinder is used to measure the volume, its test accuracy is limited by the scale accuracy of the measuring cylinder and the installation accuracy of the liquid level electrode, thus resulting in a large test error; in addition, this measurement The method brings inconvenience to the daily maintenance of the instrument, because the liquid level electrode is installed on the inner wall of the measuring cylinder, and the daily measuring cylinder cleaning and electrode maintenance are very difficult.

New content:

In order to overcome the shortcomings of poor measurement accuracy and inconvenient maintenance in the existing detection technology of polymer filtration factor measuring cylinder volumetric method, this model provides a new detection device for polymer filtration factor. The device abandons the traditional volumetric method, uses an electronic balance with high measurement accuracy, and completes the detection of the polymer filtration factor by weighing the mass of the polymer solution, thereby overcoming the defects in the prior art.

The technical solution of the present invention is: the detection device of the polymer filtration factor includes an electronic balance and a controller, the electronic balance is connected to the controller wire, a liquid collector is placed on the electronic balance, and a liquid collector is arranged above the liquid collector. There is a liquid reservoir, the lower end of the liquid outlet of the liquid reservoir is facing the upper opening of the liquid collector, the inner bottom of the liquid reservoir has a filter membrane, and the upper end of the liquid reservoir is connected with a solenoid valve, a pressure reducing valve and a gas cylinder in sequence through a pipeline , the controller is connected with the solenoid valve.

The present invention has the following beneficial effects: after adopting the above scheme, the measurement accuracy can be greatly improved by using the electronic balance weighing method instead of the measuring cylinder measuring volume method, that is, if the test accuracy of the electronic balance is 0.1g, the electronic balance can be used to replace the one with the smallest scale of 1ml. measuring cylinder, the test accuracy can be increased by 10 times. In addition, it can also effectively avoid the inconvenience of cleaning work caused by the liquid level electrode probe installed in the measuring cylinder and the problem of probe corrosion failure in the existing testing instrument.

Description of drawings:

Accompanying drawing 1 is the structural representation of the utility model.

In the figure, 1-solenoid valve, 2-liquid reservoir, 3-filter membrane, 4-liquid collector, 5-electronic balance, 6-controller, 7-printer, 8-gas cylinder, 9-pressure reducing valve.

Detailed ways:

Below in conjunction with accompanying drawing, the present invention is further described: the detecting device of this polymer filter factor comprises electronic balance 5, controller 6, and described electronic balance 5 is connected with described controller 6 leads, is placed on the electronic balance 5 A liquid container 4, a liquid reservoir 2 is arranged above the liquid collector 4, the lower end of the liquid outlet of the liquid reservoir 2 is facing the upper opening of the liquid collector 4, and the liquid flowing out of the liquid reservoir 2 is collected by the liquid collector 4 , and weighed by an electronic balance 5, there is a filter membrane 3 at the bottom of the liquid reservoir 2, and the polymer solution is filtered by the filter membrane 3, and the upper end of the liquid reservoir 2 is connected with a solenoid valve 1 and a pressure reducing valve 9 in sequence through a pipeline And the gas cylinder 8, the controller 6 is connected with the electromagnetic valve 1, the gas cylinder 8 provides constant pressure gas to enter the liquid storage 2, and the polymer solution in the liquid storage 2 flows into the liquid storage 2 through filtration.

Usually, the polymer mass concentration of the polymer solution in the mine is 0.1%, and the density of water and polymer dry powder are respectively 1.0 g/ml and 0.87 g/ml under normal temperature conditions. Taking 100g of water and polymer solution as an example, the volume of water is 100ml, and the volume of polymer solution with a mass concentration of 0.1% is calculated as follows: (1) water quality 99.9g (100g×99.9%), corresponding volume 99.9ml; (2) The mass of the polymer is 0.1g (100g×0.1%), and the corresponding volume is 0.115ml (0.1g÷0.87g/ml); (3) the volume of the polymer solution is 100.015ml (99.9ml+0.115ml). The volume of 100g polymer solution is only 0.015ml larger than the volume of the same quality water. It can be seen that the density of the polymer solution can be approximately considered to be the same as that of water. In this way, numerically, the polymer solution volume in milliliters is equal to the polymer solution mass in grams, that is, the electronic balance can be used to weigh the mass instead of the graduated cylinder to measure the volume. If the test accuracy of the electronic balance is 0.1g or 0.1ml, the test accuracy can be increased by 10 times by using the electronic balance instead of the measuring cylinder with a minimum scale of 1ml. And the inconvenience brought to the cleaning work and the corrosion failure problem of the probe. In the technical scheme described in the present model, the polymer solution to be measured is first injected into the liquid reservoir 2 with a controllable liquid outlet at the lower end; then the electronic balance 5 is vertically placed at the lower end of the liquid outlet of the liquid reservoir 2, The opening of the liquid collector 4 on the balance 5 is facing the liquid outlet of the liquid reservoir; the liquid outlet is opened successively, and the timing is started when the first drop of solution is dripped into the container on the electronic balance, and the time is set as T ₀ ; Sequentially record the time T ₁₀₀ when the quality of the solution in the container reaches 100 grams; record the time T ₂₀₀ when the quality of the solution in the container reaches 200 grams; record the time T ₃₀₀ when the quality of the solution in the container reaches 300 grams; then you can follow Calculated with the following formula:

$\mathrm{<span\; class="notranslate">\; N</span>}<span\; class="notranslate">\; =</span>\frac{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 300</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 200</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>}{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 200</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 100</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>}$

The obtained N is the polymer filter factor.

As shown in Figure 1, the specific operation process is: the bottom of the liquid reservoir 2 is equipped with a filter membrane 3, at first the liquid reservoir 2 is filled with about 400ml of polymer solution, the liquid collector 4 is placed on the electronic balance 5 and the control The device 6 is cleared to 0, and then the power supply and the gas source solenoid valve 1 switch are started, and the constant-pressure gas enters the liquid reservoir 2 from the gas cylinder 8 . When the first drop of polymer solution flows out of the outlet of the liquid reservoir 2, start the "run" switch on the controller 6, and the instrument starts weighing (volume) and timing. When the mass of liquid in the liquid collector 4 respectively reaches 100g, 200g and 300g, the controller 6 automatically records the corresponding times T ₁ , T ₂ and T ₃ . At 300 g, the controller 6 issues an instruction to close the solenoid valve 1, cut off the gas source, and calculate and save relevant parameters such as filter factors. The operator can decide whether to output the final result by the printer 7 according to actual needs.

Claims (1)

1. A polymer solution filtration factor detection device, comprising an electronic balance (5), a controller (6), is characterized in that: the electronic balance (5) is connected to the controller (6) wire, and the electronic A liquid collector (4) is placed on the balance (5), a liquid reservoir (2) is arranged above the liquid collector (4), and the lower end of the liquid outlet of the liquid reservoir (2) is facing the The upper opening has a filter membrane (3) at the inner bottom of the liquid reservoir (2), and the upper end of the liquid reservoir (2) is sequentially connected with a solenoid valve (1), a pressure reducing valve (9) and a gas cylinder (8) through a pipeline. The controller (6) is connected with the solenoid valve (1).

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