CN214703226U - Device for detecting oil particle amount - Google Patents
Device for detecting oil particle amount Download PDFInfo
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- CN214703226U CN214703226U CN202120446208.1U CN202120446208U CN214703226U CN 214703226 U CN214703226 U CN 214703226U CN 202120446208 U CN202120446208 U CN 202120446208U CN 214703226 U CN214703226 U CN 214703226U
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Abstract
The utility model discloses a device for detecting fluid granule volume belongs to industrial sensor technical field. The utility model comprises a testing cavity, a testing cavity is arranged in the testing cavity along the length direction, the two ends of the testing cavity are sealed by a first end supporting body and a second end supporting body, an intermediate supporting body is arranged in the testing cavity, and the intermediate supporting body is provided with a fluid channel which is communicated with the front and the back; the two sides of the middle support body are respectively provided with a first columnar inner electrode and a second columnar inner electrode which are coaxial with the test cavity, the outer end of the electrode on one side is provided with a cavity extending inwards, the end support body corresponding to the cavity is provided with a corresponding opening, the columnar magnet is installed in the cavity of the electrode from the outside, and the end part of the columnar magnet is fixed through a gland. The utility model discloses to the present situation that the oil particle volume detection design is complicated, sensitivity is not high at present, adopt differential structural design, the interference killing feature is strong, and detection effect is better.
Description
Technical Field
The utility model relates to an industrial sensor technical field, more specifically say, relate to a device for detecting fluid granule volume.
Background
In industrial equipment, various lubricating oil, hydraulic oil and other oil liquids are used in a large quantity to reduce mechanical friction and transfer mechanical pressure. The oil liquid can have property change and performance degradation caused by high-temperature oxidation, water inflow or particle pollution in the using process, the early mechanical wear can be found by monitoring the property change of the oil liquid, particularly the particle quantity change, the early warning information is provided for the fault occurrence of equipment, and the method has important significance for reducing the damage and the fault shutdown of the equipment and improving the utilization efficiency of the equipment.
The capacitance sensor detects the particle amount change of the oil liquid by measuring the dielectric constant change of the oil liquid, and is widely applied to actual production. However, the currently applied capacitive particle detection technology has the following problems: 1. because the factors influencing the change of the dielectric constant of the oil are many, such as water, oil oxidation, metal particles and the like, the capacitance detection can only measure the comprehensive influence effect of a plurality of factors, and different pollution components are difficult to distinguish; 2. the measurement sensitivity of the capacitance detection particle amount is generally not high, and the application range of the technology is greatly influenced. In order to solve the problems, a plurality of published patents and published articles in the industry at present propose various probe structures and measurement methods, but the design is complex, the use is difficult, and the practical application effect still has great optimization space.
After retrieval, the method comprises the following steps: 2019112325609, title of invention: the utility model provides a capacitanc hydraulic oil grit is monitoring system in grades, this application for including metal grit collection device, detection pipeline, little mesh number filter core, big mesh number filter core, be equipped with little mesh number filter core, big mesh number filter core in the detection pipeline, metal grit collection device can all be placed to detection pipeline both sides, this application for detect based on the magnetism principle. Also as in chinese patent application No.: 2019101945078, title of invention: a magnetic capacitance ferromagnetic abrasive particle detection sensor and a manufacturing method thereof are provided, the application includes: a magnetic capacitance detection unit and an excitation unit; the magnetic capacitor detection unit comprises a copper capacitor plate and a permanent magnet capacitor plate which are arranged on a PDMS substrate, the copper capacitor plate and the permanent magnet capacitor plate are connected through an insulated wire, and the magnetic capacitor ferromagnetic abrasive particle detection sensor is connected with the excitation unit through the insulated wire.
Also as in chinese patent application No.: 2019106953634, title of invention: a capacitive hydraulic oil abrasive particle grading monitoring device, this application includes: the pipeline detection device comprises a detection pipeline, a connecting structure which is arranged on two sides of the detection pipeline and connects the monitoring device to the pipeline, and a plurality of grading detection modules which are arranged on the detection pipeline. This application is through the mode of adding the filter core in the test tube way, and the effectual metal grit with in the hydraulic oil adsorbs the filter core on, not only is favorable to realizing the detection to the metal grit, can effectually separate out the grit of unidimensional not from the hydraulic oil simultaneously, can acquire the size information of grit moreover, reduces the grit content in the hydraulic oil. Thus, there are a number of techniques related to oil performance testing, but there is still a need in the industry for new ways to be more simple and effective.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to provide a device for detecting fluid granule volume to the current situation that present fluid granule volume detection design is complicated, sensitivity is not high, adopts differential structural design, simple structure, and the interference killing feature is strong, and detection effect is better.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a device for detecting fluid granule volume, including the test cavity, set up the test cavity along length direction in the test cavity, the both ends of test cavity are sealed through first end supporter and second end supporter, install the intermediate strut body in the test cavity, and the intermediate strut body is equipped with the fluid passageway that link up around supplying; a first columnar inner electrode and a second columnar inner electrode which are coaxial with the test cavity are respectively arranged on two sides of the middle support body; the outer end of one side electrode is provided with an inwardly extending cavity, the end support body corresponding to the cavity is correspondingly provided with an opening, the columnar magnet is arranged in the cavity of the electrode from the outside, and the end part of the columnar magnet is fixed through the gland.
The utility model discloses a device for detecting fluid granule volume, including the test cavity, set up the test cavity along length direction in the test cavity, the both ends of test cavity are sealed through first end supporter and second end supporter, and the intermediate strut body is installed in the middle part of the test cavity, and is equipped with the fluid passageway that link up around supplying on the intermediate strut body; and a first columnar inner electrode and a second columnar inner electrode which are coaxial with the test cavity are respectively arranged on two sides of the intermediate support body, and a filtering membrane is arranged in an oil passage area on the intermediate support body.
The utility model discloses a device for detecting fluid granule volume, including the test cavity, set up the test cavity along length direction in the test cavity, the both ends of test cavity are sealed through first end supporter and second end supporter, and the intermediate strut body is installed in the middle part of the test cavity, and is equipped with the fluid passageway that link up around supplying on the intermediate strut body; a first columnar inner electrode and a second columnar inner electrode which are coaxial with the test cavity are respectively arranged on two sides of the middle support body; the outer end of one side electrode is provided with an inward extending cavity, the corresponding end support body is correspondingly provided with an opening, the columnar magnet is arranged in the cavity of the electrode from the outside, and the end part of the columnar magnet is fixed through a gland; meanwhile, the oil passage area on the intermediate support body is provided with a filtering membrane.
Furthermore, the test cavity is made of metal materials, and the middle support body, the first end support body and the second end support body are made of insulating materials.
Further, the inner test chamber of the test chamber has a diameter D, the first pillar-shaped inner electrode has a diameter D1 and an effective length W1, and the second pillar-shaped inner electrode has a diameter D2 and an effective length W2, and satisfies W1 ═ Ln (D/D2) ═ W2 × (D/D1).
Furthermore, an oil inlet and an oil outlet are formed in the test cavity along the length extension direction, and the horizontal height position of the oil outlet is higher than that of the oil inlet.
Furthermore, the first end support body and the second end support body are respectively provided with a through hole which is correspondingly used as an oil inlet and an oil outlet.
Furthermore, the first columnar inner electrode and the second columnar inner electrode are both equal-diameter columnar electrodes, and the diameters of the first columnar inner electrode and the second columnar inner electrode are the same.
Furthermore, the first columnar inner electrode and the second columnar inner electrode are both equal-diameter columnar electrodes, and the diameters of the first columnar inner electrode and the second columnar inner electrode are different.
Furthermore, the test cavity is provided with a wiring through hole for leading out the internal electrode connecting wire, and the middle support body is also provided with a wiring through hole corresponding to the wiring through hole.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a device for detecting fluid particle volume through set up the column magnet on one side electrode or set up filtration membrane on the intermediate support body, can effectively adsorb the granule in the filtration fluid, cause the electric capacity difference grow of first detection electric capacity and second detection electric capacity, through measuring the electric capacity change of first detection electric capacity and second detection electric capacity and the differential capacitance change of the two, can measure the ferromagnetic particle content in the fluid, measuring sensitivity is higher, and is easy and simple to handle, and structural design is simple.
(2) The utility model discloses a device for detecting fluid particle volume, be equipped with first detection electric capacity and second detection electric capacity, both capacitance values in the air are the same, and insert differential capacitance detection circuit simultaneously, both have the same material and similar structure, spatial position is very close again, consequently ambient temperature changes and other electromagnetic interference are the same to the influence effect of two capacitance values, adopt differential measurement mode can be fine the first compensation external disturbance to measuring adverse effect, moreover, the steam generator is simple in structure, the interference killing feature is strong, and measuring sensitivity is higher.
(3) The utility model discloses a device for detecting fluid particle volume adopts the outside structure of installing and removing the magnet, can be convenient for take out the column magnet and make the ferromagnetic granule that adsorbs on wash away in the practice, realizes putting of sensor zero, and whole process need not dismantle the sensor, and it is huge to meaning in the practical application.
Drawings
Fig. 1 is a schematic structural view of the device for detecting the amount of oil particles according to the present invention;
fig. 2 is the utility model discloses a device sectional structure schematic diagram for detecting fluid particle volume.
The reference numerals in the schematic drawings illustrate:
100. a test chamber; 101. an oil inlet; 102. an oil outlet; 200. an intermediate support; 300. a first end support; 400. a first columnar inner electrode; 401. a columnar magnet; 402. a gland; 500. a second columnar inner electrode; 600. a second end support; 700. and (4) filtering the membrane.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1 and fig. 2, the device for detecting the amount of oil particles in the embodiment includes a testing cavity 100, a testing cavity, specifically a testing cavity with a through hole of equal diameter, is formed in the testing cavity 100 along a length direction, two ends of the testing cavity are sealed by a first end support 300 and a second end support 600, an intermediate support 200 is installed in the testing cavity, and an oil passage for front-back communication is formed in the intermediate support 200; a first columnar inner electrode 400 and a second columnar inner electrode 500 which are coaxial with the test cavity are respectively arranged at two sides of the middle support body 200; that is, a first cylindrical inner electrode 400 is disposed between the middle supporter 200 and the first end supporter 300, a second cylindrical inner electrode 500 is disposed between the middle supporter 200 and the second end supporter 600, the first cylindrical inner electrode 400 and the test chamber 100 form a first detection capacitor, the second cylindrical inner electrode 500 and the test chamber 100 form a second detection capacitor, and the first detection capacitor and the second detection capacitor have the same capacitance value in the air and are simultaneously connected to the differential capacitance detection circuit.
In this embodiment, the testing chamber 100 is made of a metal material, and the intermediate supporting body 200, the first end supporting body 300 and the second end supporting body 600 are made of an insulating material. In this embodiment, the test chamber 100 is provided with a routing through hole for leading out an internal electrode connection line, and the intermediate support 200 is also provided with a corresponding routing through hole aligned with the through hole, specifically as shown in fig. 1, the middle of the test chamber 100 is provided with a routing through hole perpendicular to the oil flow direction, the intermediate support 200 may adopt a spoke-shaped structure with radial distribution, and the middle of the spoke-shaped structure is provided with a corresponding routing through hole; the intermediate support 200 may also be a disk-shaped structure, the diameter of the disk is the same as that of the test chamber, and a plurality of through holes for oil to flow through are arranged on the disk as oil passages. In this embodiment, the oil inlet 101 and the oil outlet 102 are disposed on the testing cavity 100 along the oil flowing direction, the horizontal height position of the oil outlet 102 is higher than the horizontal height position of the oil inlet 101, as shown in fig. 2, oil inlets and outlets are installed on two sides of the testing cavity 100, the oil inlet 101 is disposed at the bottom of the side surface of the first detection capacitor, and the oil outlet 102 is disposed at the top of the side surface of the second detection capacitor.
In this embodiment, the diameter of the internal test chamber of the test chamber 100 is D, the first pillar inner electrode 400 and the second pillar inner electrode 500 are both equal-diameter pillar electrodes, the diameter of the first pillar inner electrode 400 is D1, the effective length W1, the diameter of the second pillar inner electrode 500 is D2, and the effective length W2, the diameters of the first pillar inner electrode 400 and the second pillar inner electrode 500 may be the same or different, but both W1 × Ln (D/D2) ═ W2 × Ln (D/D1), and Ln is self-heating logarithm operation. Specifically, as shown in fig. 1, the diameter D1 of the first pillar inner electrode 400 is much larger than the diameter D2 of the second pillar inner electrode 500, while W1 is smaller than W2, keeping W1 × Ln (D/D2) ═ W2 × Ln (D/D1). When the D-D1 is small, the effect of the particles in the oil on the capacitance values of the first detection capacitor and the second detection capacitor is different. The smaller the D-D1, the greater the effect of the same size particle on the first detection capacitance, in this example D-D1 is 1 mm.
In this embodiment, the metal test cavity 100 is used as a grounding electrode of the detection capacitor, so that a strong shielding effect is provided for external interference, and since the first detection capacitor and the second detection capacitor are made of the same material and have similar structures and are very close to each other in spatial position, the influence of environmental temperature change and other electromagnetic interference on the two capacitance values is the same, and the adverse effect of the external interference on the measurement can be well compensated by adopting a differential measurement mode.
In this embodiment, the outer end of one of the electrodes is provided with an inwardly extending cavity, the corresponding end support is provided with a corresponding opening, the columnar magnet 401 is mounted in the cavity of the electrode from the outside, and the end is fixed by the gland 402. Specifically, as shown in fig. 1, a cavity is formed in the middle of the first cylindrical inner electrode 400, a hole is formed in the middle of the first end support 300, and a cylindrical magnet 401 is externally mounted in the cavity of the first cylindrical inner electrode 400. In practical application, the fluid that awaits measuring gets into the test chamber by oil inlet 101, flow from oil-out 102 behind the full test chamber, the fluid that awaits measuring is when first detection electric capacity, ferromagnetic particle in the fluid can be adsorbed to cylindrical magnet 401, make the ferromagnetic particle volume that contains in the fluid that gets into the second detection electric capacity significantly reduce, cause the electric capacity difference grow of first detection electric capacity and second detection electric capacity, the electric capacity through measuring first detection electric capacity and second detection electric capacity changes and the differential capacitance of the two changes, can measure the ferromagnetic particle content in the fluid. Due to the adoption of the structure of externally assembling and disassembling the magnet, the columnar magnet 401 can be conveniently taken out in practice, so that ferromagnetic particles adsorbed on the columnar magnet can be washed away, zero setting of the sensor is realized, the sensor does not need to be disassembled in the whole process, and the significance in practical application is huge.
Example 2
An apparatus for detecting the amount of oil particles according to this embodiment is substantially the same as that of embodiment 1, except that in this embodiment, the columnar magnet 401 and the gland 402 are not provided, but a filter membrane 700 for filtering particles in oil is installed in the oil passage area of the intermediate support 200, as shown in fig. 2, the intermediate support 200 has a spoke-type structure, that is, the filter membrane 700 is installed in the spoke gap. When the fluid that awaits measuring gets into the second through first detection electric capacity and detects electric capacity, filtration membrane 700 can adsorb ferromagnetic and non-ferromagnetic granule in the fluid that awaits measuring for the granule volume that contains in the fluid that gets into the second detection electric capacity significantly reduces, causes the electric capacity difference grow of first detection electric capacity and second detection electric capacity, and the differential capacitance who detects electric capacity through measuring the electric capacity change of first detection electric capacity and second and the two changes, can measure the granule content in the fluid.
Example 3
The device for detecting the amount of oil particles in the embodiment is basically the same as that in embodiment 2, and further, the device in this embodiment can be directly connected to an oil pipeline for application, the oil inlet 101 and the oil outlet 102 are not arranged on the test cavity 100, but through holes are respectively formed in the first end support 300 and the second end support 600, and the first end support 300 and the second end support are correspondingly used as the oil inlet 101 and the oil outlet 102, so that the application is more flexible and convenient.
Example 4
The device for detecting the amount of oil particles in the embodiment is basically the same as the above embodiment, and it should be noted that, according to different application requirements, the structural forms of the columnar magnet 401 and the filtering membrane 700 can be used in combination, in practical application, when the oil to be detected passes through the first detection capacitor, due to the adsorption of the columnar magnet 401 and the filtering action of the filtering membrane 700, the amount of particles in the oil entering the second detection capacitor is greatly reduced, the capacitance difference between the first detection capacitor and the second detection capacitor is increased, and the content of particles in the oil can be measured by measuring the capacitance change and the differential capacitance change of the first detection capacitor and the second detection capacitor.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. A device for detecting oil particle volume which characterized in that: the testing device comprises a testing cavity (100), wherein a testing cavity is formed in the testing cavity (100) along the length direction, two ends of the testing cavity are sealed through a first end supporting body (300) and a second end supporting body (600), an intermediate supporting body (200) is installed in the testing cavity, and an oil liquid channel which is communicated from front to back is formed in the intermediate supporting body (200); a first columnar inner electrode (400) and a second columnar inner electrode (500) which are coaxial with the test cavity are respectively arranged on two sides of the middle support body (200); the outer end of one side electrode is provided with an inwardly extending cavity, the corresponding end support body is correspondingly provided with an opening, a columnar magnet (401) is arranged in the cavity of the electrode from the outside, and the end part of the columnar magnet is fixed through a gland (402).
2. A device for detecting oil particle volume which characterized in that: the testing device comprises a testing cavity (100), wherein a testing cavity is formed in the testing cavity (100) along the length direction, two ends of the testing cavity are sealed through a first end supporting body (300) and a second end supporting body (600), an intermediate supporting body (200) is arranged in the middle of the testing cavity, and an oil liquid channel which is communicated from front to back is formed in the intermediate supporting body (200); and a first cylindrical inner electrode (400) and a second cylindrical inner electrode (500) which are coaxial with the test cavity are respectively arranged on two sides of the intermediate support body (200), and a filtering membrane (700) is arranged in an oil passage area on the intermediate support body (200).
3. The apparatus for detecting the amount of oil particles according to claim 2, wherein: through holes are respectively formed in the first end supporting body (300) and the second end supporting body (600) and correspondingly used as an oil inlet (101) and an oil outlet (102).
4. A device for detecting oil particle volume which characterized in that: the testing device comprises a testing cavity (100), wherein a testing cavity is formed in the testing cavity (100) along the length direction, two ends of the testing cavity are sealed through a first end supporting body (300) and a second end supporting body (600), an intermediate supporting body (200) is arranged in the middle of the testing cavity, and an oil liquid channel which is communicated from front to back is formed in the intermediate supporting body (200); a first columnar inner electrode (400) and a second columnar inner electrode (500) which are coaxial with the test cavity are respectively arranged on two sides of the middle support body (200); the outer end of one side electrode is provided with an inwardly extending cavity, the corresponding end support body is correspondingly provided with an opening, a columnar magnet (401) is arranged in the cavity of the electrode from the outside, and the end part of the columnar magnet is fixed through a gland (402); meanwhile, the oil passage area on the intermediate support body (200) is provided with a filter membrane (700).
5. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: the testing chamber (100), the first columnar inner electrode (400) and the second columnar inner electrode (500) are made of metal materials respectively, and the middle supporting body (200), the first end supporting body (300) and the second end supporting body (600) are made of insulating materials.
6. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: the diameter of the inner test cavity of the test cavity body (100) is D, the diameter of the first columnar inner electrode (400) is D1, the effective length is W1, the diameter of the second columnar inner electrode (500) is D2, the effective length is W2, and W1 Ln (D/D2) ═ W2 Ln (D/D1) is met.
7. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: an oil inlet (101) and an oil outlet (102) are arranged on the testing cavity (100) along the length extension direction, and the horizontal height position of the oil outlet (102) is higher than that of the oil inlet (101).
8. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: the first columnar inner electrode (400) and the second columnar inner electrode (500) are both equal-diameter columnar electrodes, and the diameters of the first columnar inner electrode and the second columnar inner electrode are the same.
9. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: the first columnar inner electrode (400) and the second columnar inner electrode (500) are both equal-diameter columnar electrodes, and the diameters of the first columnar inner electrode and the second columnar inner electrode are different.
10. An apparatus for detecting the amount of oil particles according to claim 1, 2 or 4, wherein: the testing cavity (100) is provided with a wiring through hole for leading out the internal electrode connecting wire, and the middle supporting body (200) is also provided with a wiring through hole corresponding to the wiring through hole.
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| CN202120446208.1U CN214703226U (en) | 2021-03-01 | 2021-03-01 | Device for detecting oil particle amount |
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| CN202120446208.1U CN214703226U (en) | 2021-03-01 | 2021-03-01 | Device for detecting oil particle amount |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030200A (en) * | 2021-03-01 | 2021-06-25 | 深圳市先波科技有限公司 | Oil liquid detection device and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030200A (en) * | 2021-03-01 | 2021-06-25 | 深圳市先波科技有限公司 | Oil liquid detection device and detection method thereof |
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