CN204241070U - Novel liquid level measuring device - Google Patents

Abstract

The utility model discloses a novel liquid level measuring device, which comprises an environmental electrode plate left on the measured liquid, a reference electrode plate used for remaining in the tested liquid and a vertical measuring electrode plate used for being vertically inserted into the tested liquid and partially remaining above the tested liquid, the measuring device also comprises a grounding capacitance sensor used for measuring the capacitance value C1 of the isolated conductor of the environmental electrode plate, the capacitance value C2 of the isolated conductor of the reference electrode plate and the capacitance value C3 of the isolated conductor of the vertical measuring electrode plate, the environment electrode plate, the reference electrode plate and the vertical measuring electrode plate are respectively and electrically connected with the detection signal input end of the grounding capacitance sensor, and the grounding capacitance sensor is also electrically connected with a controller for calculating the depth of the vertical measuring electrode plate inserted into the liquid according to the capacitance measuring result of the grounding capacitance sensor. The present case simple structure easily realizes that the suitability is good.

Description

A kind of new-type liquid level emasuring device

[technical field]

The utility model relates to a kind of new-type liquid level emasuring device.

[background technology]

At present, the level gauging mode on market is varied, has applying ultrasonic lever meter to measure mode, has radar level gauging mode, has static pressure level gauging mode, has float-ball type level measuring mode etc.

But existing liquid level emasuring device can be subject to the impact of environment or fluid to be measured usually when measuring, make testing result have deviation, and by restrictions such as principle of work, the applicability of some liquid level emasuring devices is bad, compatible little.

Therefore, be necessary to solve as above problem.

[utility model content]

The utility model overcomes the deficiency of above-mentioned technology, provides a kind of new-type liquid level emasuring device, and its structure is simple and easy to realize, and applicability is good.

For achieving the above object, the utility model have employed following technical proposal:

A kind of new-type liquid level emasuring device, include the environment battery lead plate 1 for staying on fluid to be measured, for staying the reference electrode plate 2 in fluid to be measured, and for vertically inserting in fluid to be measured and the vertical potential electrode plate 3 partly stayed on fluid to be measured, described environment battery lead plate 1, reference electrode plate 2 is all flat, it is known that the plate section of described environment battery lead plate 1 amasss S1, it is known that the plate section of described reference electrode plate 2 amasss S2, described vertical potential electrode plate 3 is in flat rectangular shape, its width L and vertical height H3 is known, described measurement mechanism also includes for measurement environment battery lead plate 1 isolated conductor capacitance C1, reference electrode plate 2 isolated conductor capacitance C2, and the direct earth capacitance sensor 4 of vertical potential electrode plate 3 isolated conductor capacitance C3, described environment battery lead plate 1, reference electrode plate 2, and vertical potential electrode plate 3 is electrically connected with the detection signal input end of described direct earth capacitance sensor 4 respectively, described direct earth capacitance sensor 4 is also electrically connected with for calculating according to the capacitance measurements of direct earth capacitance sensor 4 controller 5 that described vertical potential electrode plate 3 inserts liquid depth Hx.

The new-type liquid level emasuring device of one as above, described measurement mechanism also includes support 100, and described environment battery lead plate 1, reference electrode plate 2, vertical potential electrode plate 3, direct earth capacitance sensor 4, controller 5 are all arranged on described support 100.

The new-type liquid level emasuring device of one as above, described vertical potential electrode plate 3 lower end is inserted into the bottom of fluid to be measured.

As optimal enforcement mode, described environment battery lead plate 1, reference electrode plate 2 are all flat rectangular shape, and its width is all L and length is all H1, and the height H 3 of described vertical potential electrode plate 3 is greater than the length H1 of described environment battery lead plate 1, reference electrode plate 2;

Or environment battery lead plate 1, reference electrode plate 2 are all flattened round as above.

Compared with prior art, the beneficial effects of the utility model are:

1, structure is simple and easy to realize, have employed environment battery lead plate, reference electrode plate and vertical potential electrode plate, direct earth capacitance sensor, controller stretch into liquid depth Hx to measure vertical potential electrode plate, it is easy to detect, the kind of testing result Hx and liquid has nothing to do, applicability is good, compatible good.

2, environment battery lead plate, reference electrode plate, vertical potential electrode plate, direct earth capacitance sensor, controller are all installed on the bracket, so, make to use and implement more convenient, detect more convenient.

3, vertical potential electrode plate lower end is inserted into the bottom of fluid to be measured, and so, the Hx measured just equals the degree of depth of liquid, so that the utilization of reality.

4, environment battery lead plate, reference electrode plate are all flat rectangular shape, and its width is all L and length is all H1, and it is convenient to the calculating of Hx.

5, the height H 3 of vertical potential electrode plate is greater than the length H1 of described environment battery lead plate, reference electrode plate, and it is convenient to the bottom that described vertical potential electrode plate lower end is inserted into fluid to be measured easily, so, is convenient to the degree of depth measuring fluid to be measured.

6, environment battery lead plate, reference electrode plate are all flattened round, so, be convenient to reduce environment battery lead plate, reference electrode plate takes up room.

[accompanying drawing explanation]

Fig. 1 is structural drawing of the present utility model.

[embodiment]

The utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technician of the same trade:

As shown in Figure 1, a kind of new-type liquid level emasuring device, include the environment battery lead plate 1 for staying on fluid to be measured, for staying the reference electrode plate 2 in fluid to be measured, and for vertically inserting in fluid to be measured and the vertical potential electrode plate 3 partly stayed on fluid to be measured, described environment battery lead plate 1, reference electrode plate 2 is all flat, it is known that the plate section of described environment battery lead plate 1 amasss S1, it is known that the plate section of described reference electrode plate 2 amasss S2, described vertical potential electrode plate 3 is in flat rectangular shape, its width L and vertical height H3 is known, described measurement mechanism also includes for measurement environment battery lead plate 1 isolated conductor capacitance C1, reference electrode plate 2 isolated conductor capacitance C2, and the direct earth capacitance sensor 4 of vertical potential electrode plate 3 isolated conductor capacitance C3, described environment battery lead plate 1, reference electrode plate 2, and vertical potential electrode plate 3 is electrically connected with the detection signal input end of described direct earth capacitance sensor 4 respectively, described direct earth capacitance sensor 4 is also electrically connected with for calculating according to the capacitance measurements of direct earth capacitance sensor 4 controller 5 that described vertical potential electrode plate 3 inserts liquid depth Hx.

Principle of work and the use procedure of this case are as follows:

During measurement, reference electrode plate 2 is in fluid to be measured and vertical potential electrode plate 3 part vertically stretches in fluid to be measured, another part exposes in the environment, then, direct earth capacitance sensor 4 measures environment battery lead plate 1 isolated conductor capacitance C1, reference electrode plate 2 isolated conductor capacitance C2 and vertical potential electrode plate 3 isolated conductor capacitance C3.

As mentioned above, wherein, capacitance C3 is the algebraic sum on the capacitance C under the capacitance C of vertical potential electrode plate 3 in fluid to be measured with vertical potential electrode plate 3 on fluid to be measured, namely to have under C3=C on+C, and the measurement environment of vertical potential electrode plate 3 upper part is the same with the measurement environment of environment battery lead plate 1, namely their specific inductive capacity are identical, and, the measurement environment of vertical potential electrode plate 3 lower part is the same with the measurement environment of reference electrode plate 2, and namely their specific inductive capacity are identical.

As mentioned above, the capacitance calculation formula of isolated conductor three electrode plate and electromotive force are that the distance between the conductor of zero is identical, show that the size of capacitance is directly proportional to area, namely have:

and

Thus draw $C3=\frac{(H3-\mathrm{Hx})*L*C1}{S1}+\frac{\mathrm{Hx}*L*C2}{S2}$

As mentioned above, finally show that vertical potential electrode plate 3 stretches into liquid depth $\mathrm{Hx}=\frac{C3*S1*S2-H3*L*C1*S2}{L*C2*S1-L*C1*S2}.$

As mentioned above, vertical potential electrode plate 3 lower end is vertically inserted into the bottom of fluid to be measured, so, makes the Hx measured be the degree of depth of fluid to be measured.

As mentioned above, this case structure is simple and easy to realize, have employed environment battery lead plate 1, reference electrode plate 2 and vertical potential electrode plate 3, direct earth capacitance sensor 4, controller 5 stretch into liquid depth Hx to measure vertical potential electrode plate 3, it is easy to detect, the kind of testing result Hx and liquid has nothing to do, and applicability is good.

As mentioned above, during enforcement, described environment battery lead plate 1, reference electrode plate 2 are all flat rectangular shape, and its width is all L and length is all H1, is convenient to the calculating of Hx, draws after simplification $\mathrm{Hx}=\frac{C3*H1-C1*H3}{C2-C1}.$

As mentioned above, this measurement mechanism also includes support 100, and described environment battery lead plate 1, reference electrode plate 2, vertical potential electrode plate 3, direct earth capacitance sensor 4, controller 5 are all arranged on described support 100, so, make to use and implement more convenient, detect more convenient.

As mentioned above, as optimal enforcement mode, the height H 3 of described vertical potential electrode plate 3 is greater than the length H1 of described environment battery lead plate 1, reference electrode plate 2, so that make described vertical potential electrode plate 3 lower end be inserted into the bottom of fluid to be measured easily, so, the degree of depth measuring fluid to be measured is convenient to.

Or environment battery lead plate 1 as above, reference electrode plate 2 be all flattened round, so, be convenient to reduction environment battery lead plate 1, reference electrode plate 2 takes up room.

As mentioned above, what this case was protected is a kind of new-type liquid level emasuring device, and all technical schemes identical or close with this case structure all should be shown for falling in the protection domain of this case.

Claims (5)

1. a new-type liquid level emasuring device, it is characterized in that including the environment battery lead plate (1) for staying on fluid to be measured, for staying the reference electrode plate (2) in fluid to be measured, and for vertically inserting in fluid to be measured and the vertical potential electrode plate (3) of partly staying on fluid to be measured, described environment battery lead plate (1), reference electrode plate (2) is all flat, it is known that the plate section of described environment battery lead plate (1) amasss S1, it is known that the plate section of described reference electrode plate (2) amasss S2, described vertical potential electrode plate (3) is in flat rectangular shape, its width L and vertical height H3 is known, described measurement mechanism also includes for measurement environment battery lead plate (1) isolated conductor capacitance C1, reference electrode plate (2) isolated conductor capacitance C2, and the direct earth capacitance sensor (4) of vertical potential electrode plate (3) isolated conductor capacitance C3, described environment battery lead plate (1), reference electrode plate (2), and vertical potential electrode plate (3) is electrically connected with the detection signal input end of described direct earth capacitance sensor (4) respectively, described direct earth capacitance sensor (4) is also electrically connected with for calculating according to the capacitance measurements of direct earth capacitance sensor (4) controller (5) that described vertical potential electrode plate (3) inserts liquid depth Hx.

2. the new-type liquid level emasuring device of one according to claim 1, it is characterized in that described measurement mechanism also includes support (100), described environment battery lead plate (1), reference electrode plate (2), vertical potential electrode plate (3), direct earth capacitance sensor (4), controller (5) are all arranged on described support (100).

3. the new-type liquid level emasuring device of one according to claim 1, is characterized in that described vertical potential electrode plate (3) lower end is inserted into the bottom of fluid to be measured.

4. the new-type liquid level emasuring device of the one according to claim 1-3 any one, it is characterized in that described environment battery lead plate (1), reference electrode plate (2) is all flat rectangular shape, its width is all L and length is all H1, and the height H 3 of described vertical potential electrode plate (3) is greater than the length H1 of described environment battery lead plate (1), reference electrode plate (2).

5. the new-type liquid level emasuring device of the one according to claim 1-3 any one, is characterized in that described environment battery lead plate (1), reference electrode plate (2) is all flattened round.