CN210892993U

CN210892993U - Nonmetal pipeline dirt thickness detection device based on electric capacity method

Info

Publication number: CN210892993U
Application number: CN201922319955.4U
Authority: CN
Inventors: 刘鹏; 邢会爽
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-06-30
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a non-metallic pipeline dirt thickness detection device based on electric capacity method, detection device includes PLA fixed shell, the set screw, the electrode shield cover, metal plate electrode and rubber protection shielding lead wire, PLA fixed shell is circular staple bolt column structure and locks through the set screw, PLA fixed shell's outer edge is equipped with fixture block and draw-in groove respectively, metal plate electrode and electrode shield cover are respectively through fixture block and draw-in groove from inside to outside symmetry fixed mounting on PLA fixed shell, rubber protection shielding lead wire prolongs metal plate electrode center and draws forth from the mouth of drawing forth of locating PLA fixed shell side, the utility model discloses can install on non-metallic pipeline's outer wall to a dirt thickness of survey non-metallic pipeline.

Description

Nonmetal pipeline dirt thickness detection device based on electric capacity method

Technical Field

The utility model relates to a non-metallic pipe dirt detects technical field, especially a non-metallic pipe dirt thickness detection device based on electric capacity method.

Background

At present, pipelines made of materials such as various non-metal PPR, PVC, glass fiber and PE are widely used in life and industry, along with the rapid development of industrial production and living standard, the harm caused by pipeline dirt is more and more prominent, the pipeline overflowing area is reduced, the conveying energy consumption is increased, the phenomena of pipe blockage, deformation, burst and the like are caused in serious cases, huge hidden dangers are brought to the safe operation of a circulating water system, and huge losses are brought to economic production.

The current research on the detection of the thickness of the dirt of the non-metal pipeline has the following problems: aiming at a non-contact detection method, more detection parameters are adopted, and introduced errors are increased; aiming at a contact detection method, a detection probe is easy to be polluted, the detection result is inaccurate, and the probe is greatly damaged; secondly, part of the detection devices have large power consumption and serious economic loss.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a non-metallic pipe dirt thickness detection device and method based on electric capacity method to solve the problem that above-mentioned technical background proposed.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a non-metallic pipeline dirt thickness detection device based on electric capacity method, includes PLA fixed shell, fixed screw, electrode shield cover, metal plate electrode and rubber protection shielding lead wire, PLA fixed shell is circular staple bolt column structure, and both ends are equipped with the screw respectively about the PLA fixed shell, the fixed screw passes through the screw is with PLA fixed shell locking, and PLA fixed shell's outer edge is equipped with fixture block and draw-in groove respectively, metal plate electrode and electrode shield cover pass through respectively fixture block and draw-in groove from inside to outside symmetry fixed mounting are on PLA fixed shell, rubber protection shielding lead wire prolongs metal plate electrode center and draws forth from locating the drawing-out mouth of PLA fixed shell side.

Furthermore, a notch for leading out the rubber protective shielding lead is arranged on the side surface of the electrode shielding cover.

Furthermore, a metal electrode lead connector is arranged on the leading-out opening and electrically connected with the rubber protective shielding lead.

Furthermore, the rubber protective shielding lead is respectively provided with a rubber protective layer, a latticed metal shielding layer and a metal electrode lead from outside to inside.

Further, the inner diameter of the PLA fixing shell is the same as the outer diameter of the nonmetal pipeline to be measured.

The utility model has the advantages that: the utility model discloses can install on non-metallic pipeline's outer wall to with the help of LCR digital bridge measuring apparatu and capacitive sensor detector, realize the accurate measurement of non-contact of non-metallic pipeline dirt thickness indirectly, simultaneously the utility model discloses still have simple, the convenient operation of installation, measure characteristics accurate, that response speed is fast, but wide application in multiple places circulating water system non-metallic water system dirt such as industrial production, domestic water, chemical industry experiments detects.

Drawings

FIG. 1 is an exploded view of the detecting device of the present invention;

fig. 2 is a schematic structural view of the PLA fixing case of the present invention;

FIG. 3 is an installation diagram of the detection device of the present invention and a non-metal pipeline;

FIG. 4 is a schematic structural view of a rubber protective shielding lead of the present invention;

fig. 5 is a front view of the detecting device of the present invention;

FIG. 6 is a schematic side view of the present invention;

FIG. 7 is a graph of the fit of the measured capacitance to the dirt thickness of the present invention;

FIG. 8 is a graph showing the relationship between the length of the metal electrode plate and the detected value of the capacitance according to the present invention;

fig. 9 is a relationship diagram of the opening angle of the metal electrode plate and the capacitance detection value according to the present invention.

In the figure, 1-PLA fixed shell, 2-fixing screw, 3-electrode shielding cover, 4-metal electrode plate, 5-rubber protective shielding lead, 6-metal electrode lead connector, 7-notch, 8-rubber protective layer, 9-grid metal shielding layer, 10-metal electrode lead, 11-screw, 12-outlet, 13-fixture block, 14-clamp groove and 15-nonmetal pipeline.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example (b):

a non-metal pipeline dirt thickness detection device based on a capacitance method is shown in attached figures 1-3 and comprises a PLA fixed shell 1, a fixed screw 2, an electrode shielding case 3, a metal electrode plate 4 and a rubber protection shielding lead 5; PLA fixed casing 1 is circular staple bolt column structure, both ends are equipped with screw 11 respectively about PLA fixed casing 1, set screw 2 is through screw 11 with PLA fixed casing 1 locking, PLA fixed casing 1's outer edge is equipped with fixture block 13 and draw-in groove 14 respectively, metal plate electrode 4 and electrode shield cover 3 are respectively through fixture block 13 and draw-in groove 14 from inside to outside symmetry fixed mounting on PLA fixed casing 1, rubber protection shielding lead 5 prolongs metal plate electrode 4 center and draws forth from locating the outlet 12 that PLA fixed casing 1 side.

Further, referring to fig. 2, the side of the electrode shield 3 is provided with a notch 7 for the rubber protective shield lead 5 to be led out.

Further, referring to fig. 1, a metal electrode lead tab 6 is disposed on the lead-out opening 12, and the metal electrode lead tab 6 is electrically connected to the rubber protective shielding lead 5.

Further, as shown in fig. 4, the rubber protective shielding lead 5 is provided with a rubber protective layer 8, a grid-shaped metal shielding layer 9 and a metal electrode lead 10 from outside to inside, and the grid-shaped metal shielding layer 9 and the electrode shielding cover 3 can effectively reduce interference of the outside on signals transmitted by the metal electrode lead 10, thereby enhancing the accuracy of detection.

Further, as shown in fig. 3, the inner diameter of the PLA fixing housing 1 is the same as the outer diameter of the non-metal pipeline 15 to be measured, and specifically, in implementation, the inner diameter of the PLA fixing housing 1 is designed according to the outer diameter of the non-metal pipeline 15, so that the PLA fixing housing 1 is completely attached to the outer wall of the non-metal pipeline 15.

The utility model discloses specifically when using: through the fixed screw with detection device fixed mounting on the outer wall of the nonmetal pipeline 15 that awaits measuring, be connected capacitance sensor detector and metal electrode lead connector 6, be connected LCR digital bridge detector and capacitance sensor detector again, detect upper computer and LCR digital bridge at last and be connected, when detecting the beginning, gather and acquire the electric capacity data information between the metal plate electrode through capacitance sensor detector and LCR digital bridge detector. And finally, quantitatively analyzing the capacitance data information through an upper computer and drawing a fitting curve graph between the non-metal pipeline dirt deposition thickness and the capacitance data information.

It should be noted that, in the above embodiment, based on a mechanism of detecting a change in a thickness of a non-metal pipe dirt by a capacitance method, the influence of a dielectric constant between metal electrode plates 4 on a detection result is analyzed, capacitance data information between the metal electrode plates 4 collected by a capacitance sensor is obtained by using an LCR digital bridge measuring instrument, a plurality of sets of capacitance data information are quantitatively analyzed by using an upper computer, a fitting curve graph of capacitance data and a dirt deposition result is drawn, and the obtained fitting curve graph is shown in fig. 7, which shows that a capacitance value between the metal electrode plates 4 has a linear correlation with the dirt thickness.

It needs to be further explained to the above embodiments that the non-metal pipe dirt may contain multiple and multi-type complex media, and the dielectric constant is different for different types of dirt, and the utility model can be used to detect according to the above method again, and obtain the corresponding fitting curve diagram of the corresponding dirt media, in the above embodiments, the detection result of fig. 7 is only the example of the detection of the PPR non-metal pipe with the outer diameter of 24.5mm and the inner diameter of 18.5 mm.

Referring to the attached drawings-5 and-6, main parameters influencing the detection sensitivity and the detection accuracy of the capacitive sensor comprise the axial length d of the metal electrode plate 4 and the opening angle α of the metal electrode plate 4, the main parameters of the sensor, namely the electric field steady state, are researched and analyzed by using finite element simulation analysis software COMSOL, and simulation data results show that the larger the axial length of the metal electrode plate 4 is, the more obvious the change of the corresponding pipe dirt deposition thickness and the capacitance value is, but the longer the capacitor plate causes the 'spatial filter effect' to make the detection of the capacitance change unresponsive, the too short the capacitor plate causes the capacitance value fluctuation to be too small to be easily captured, the detection difficulty is increased, as shown in the attached drawing-8, the relation that the capacitance values corresponding to different electrode plate axial lengths are along with the dirt deposition, the larger the opening angle of the electrode plate is, the relative area is also increased, the larger the capacitance value fluctuation is caused by the increase of the pipe dirt thickness, as shown in the attached drawing-9, the relation that the capacitance values corresponding to the metal electrode plates 4 with the dirt deposition of different opening angles are along with the dirt deposition.

To sum up, the utility model provides a pair of non-metallic pipeline dirt thickness detection device based on electric capacity method, its device have the installation simple, convenient operation's characteristics, simultaneously, the utility model discloses can acquire the electric capacity data information that capacitance sensor detector gathered with the help of LCR digital bridge measuring apparatu, carry out quantitative analysis to the result through a large amount of experiments, acquire the fitting corresponding relation of electric capacity data and dirt deposit result, realize the indirect measurement of non-metallic pipeline dirt thickness, the device measures accurately, response speed is fast, but wide application in multiple places circulating water system non-metallic pipeline dirt such as industrial production, domestic water, chemical industry experiment detects.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A non-metal pipeline dirt thickness detection device based on a capacitance method comprises a PLA fixed shell (1), a fixed screw (2), an electrode shielding case (3), a metal electrode plate (4) and a rubber protection shielding lead (5), it is characterized in that the PLA fixed shell (1) is in a circular hoop-shaped structure, the upper end and the lower end of the PLA fixed shell (1) are respectively provided with a screw hole (11), the fixing screw (2) locks the PLA fixing shell (1) through the screw hole (11), the outer edge of the PLA fixing shell (1) is respectively provided with a clamping block (13) and a clamping groove (14), the metal electrode plate (4) and the electrode shielding case (3) are symmetrically and fixedly arranged on the PLA fixed shell (1) from inside to outside through the clamping block (13) and the clamping groove (14) respectively, the rubber protective shielding lead (5) extends to the center of the metal electrode plate (4) and is led out from a leading-out opening (12) arranged on the side surface of the PLA fixed shell (1).

2. The device for detecting the thickness of the dirt on the non-metal pipeline based on the capacitance method is characterized in that a notch (7) for leading out a rubber protective shielding lead (5) is formed in the side surface of the electrode shielding cover (3).

3. The device for detecting the thickness of the dirt on the non-metal pipeline based on the capacitance method according to claim 1, wherein a metal electrode lead connector (6) is arranged on the leading-out opening (12), and the metal electrode lead connector (6) is electrically connected with the rubber protection shielding lead (5).

4. The device for detecting the thickness of the dirt on the non-metal pipeline based on the capacitance method according to claim 1, wherein the rubber protective shielding lead (5) is provided with a rubber protective layer (8), a latticed metal shielding layer (9) and a metal electrode lead (10) from outside to inside respectively.

5. The non-metal pipeline dirt thickness detection device based on the capacitance method is characterized in that the inner diameter of the PLA fixed shell (1) is the same as the outer diameter of the non-metal pipeline (15) to be detected.