CN219200610U

CN219200610U - Probe structure of eddy current vibration displacement sensor and sensor thereof

Info

Publication number: CN219200610U
Application number: CN202223453728.9U
Authority: CN
Inventors: 靳军波; 谭伟森
Original assignee: Shenzhen Senther Technology Development Co ltd
Current assignee: Shenzhen Senther Technology Development Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-16
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses an eddy current vibration displacement sensor probe structure and a sensor thereof, which comprise a metal tube, a coil sheath arranged at the first end of the metal tube, a coil arranged in the coil sheath, wherein the coil is a prefabricated coil, the top of the coil is connected with the top of the inner side of the coil sheath, a gap is reserved between the coil and the metal tube, and the metal tube is connected with the coil sheath in a sealing way. According to the utility model, the prefabricated coil is directly fixed on the coil sheath by using the prefabricated coil, so that a winding framework is omitted, the structure is simplified, the installation is convenient, the installation space is saved, and the size of the probe is reduced. Meanwhile, the coil sheath is integrally convenient to realize the waterproof sealing requirement of the coil, and the matching size of the coil sheath and the metal tube is only needed to be considered in the assembly process, so that the sealing reliability is improved, the coil sheath is prevented from being crushed or broken due to the matching problem during assembly, the integrity of the coil is ensured, and the production yield of the sensor probe is ensured.

Description

Probe structure of eddy current vibration displacement sensor and sensor thereof

Technical Field

The utility model relates to the technical field of sensors, in particular to an eddy current vibration displacement sensor probe structure and a sensor thereof.

Background

The probe part of the eddy current vibration displacement sensor is usually composed of a winding framework, a coil sheath, a shell (metal tube), a coaxial line and a joint. The existing technology is to wind the coil on the framework, and a coil protection sleeve is arranged outside the framework to protect the coil from collision. The head end and the tail end of the coil are connected with the coaxial line through wires, so that the packaging and manufacturing of the probe part are realized. The installation needs the skeleton like this, and coil sheath and shell pairwise cooperation, and the too little coil sheath of clearance is difficult to assemble, and the too big waterproof sealing effect of clearance is not too good again.

The above disadvantages are to be improved.

Disclosure of Invention

The utility model provides an eddy current vibration displacement sensor probe structure and a sensor thereof, which aim to solve the problems that the existing eddy current vibration displacement sensor probe coil, a coil sheath, a framework and a shell are inconvenient to assemble and the coil is easy to damage or the tightness of the probe is easy to influence during the assembly.

The technical scheme of the utility model is as follows:

the utility model provides an electric vortex vibration displacement sensor probe structure, includes the tubular metal resonator, sets up the coil sheath at the first end of tubular metal resonator, sets up the coil in the coil sheath, the coil is prefabricated coil, the coil with the coil sheath is connected, the coil with leave the space between the tubular metal resonator, the tubular metal resonator with coil sheath sealing connection.

According to the probe structure of the eddy current vibration displacement sensor, the coil is connected with the coil sheath through glue pouring.

According to the probe structure of the eddy current vibration displacement sensor, the connecting portion is arranged at the first end of the metal tube, the inner diameter of the coil sheath is equal to the outer diameter of the connecting portion, and the coil sheath is sleeved outside the connecting portion and connected with the metal tube.

Further, glue is encapsulated between the coil sheath and the connecting part.

According to the probe structure of the eddy current vibration displacement sensor, the coils are provided with a plurality of circles from inside to outside.

Further, gaps are reserved between the coils from inside to outside.

According to the probe structure of the eddy current vibration displacement sensor, gaps are reserved among the coils from bottom to top.

In the probe structure of the eddy current vibration displacement sensor, the outer diameter of the coil is smaller than the inner diameter of the metal tube.

According to the probe structure of the eddy current vibration displacement sensor, the height of the coil is smaller than the depth of the coil sheath, and a gap is reserved between the coil and the metal tube in the axial direction.

A sensor comprises the probe structure of the eddy current vibration displacement sensor.

According to the scheme, the prefabricated coil is directly fixed on the coil sheath by using the prefabricated coil, compared with the existing sensor probe structure, the sensor probe structure has the advantages that a winding framework is omitted, materials are saved, the structure is simplified, the installation process is simplified, the installation space is saved, and the size of the probe is reduced. Meanwhile, the coil sheath is an integral requirement for conveniently realizing waterproof sealing of the coil, only the matching size of the coil sheath and the metal tube is needed to be considered in the assembly process, the sealing reliability is improved, the coil sheath is prevented from being crushed or broken due to the matching problem during assembly, the integrity of the coil is ensured, and the production yield of the sensor probe is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the probe structure of the eddy current vibration displacement sensor of the present utility model;

FIG. 2 is a schematic cross-sectional view of the probe structure of the eddy current vibration displacement sensor of the present utility model;

fig. 3 is a schematic perspective view of a sensor according to the present utility model.

Wherein, each reference sign in the figure: 1. a metal tube; 101. a connection part; 2. a coil sheath; 3. a coil; 4. a coaxial line; 5. a coaxial connector.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.

Example 1

As shown in fig. 1 and fig. 2, the probe structure of the eddy current vibration displacement sensor of the utility model comprises a metal tube 1, a coil sheath 2 arranged at a first end of the metal tube 1, a connecting part 101 arranged at the first end of the metal tube 1, the inner diameter of the coil sheath 2 corresponding to the outer diameter of the connecting part 101, a coil sheath 2 sleeved outside the connecting part 101 and connected with the metal tube 1, a glue packaging between the coil sheath 2 and the connecting part 101, a coil 3 arranged in the coil sheath 2, wherein the coil 3 is a prefabricated coil, the coil 3 is connected with the coil sheath 2, the top of the coil 3 is connected with the top of the inner side of the coil sheath 2 through glue, and a gap is reserved between the coil 3 and the metal tube 1.

In the production process, materials such as the metal tube 1, the coil 3, the coil sheath 2 and the like for production are prepared, the coil 3 is a prefabricated coil, the prefabricated coil is a formed coil 3, the coil can be directly installed without coiling in the production process, and the coil has good structural strength and is not easy to deform. And then the prefabricated coil is fixed in the coil sheath 2 by glue, and the glue is poured between the prefabricated coil and the coil sheath 2, so that the glue has the advantages of high fixing speed, high strength, good toughness and good bonding effect, and is convenient to produce. On one hand, the glue tightly connects the prefabricated coil with the coil sheath 2, on the other hand, the solidified glue can fix the prefabricated coil, stabilize the prefabricated coil structure to prevent deformation, on the other hand, the glue has good insulativity, and can insulate and protect the prefabricated coil. The two poles of the prefabricated coil are then inserted into the metal tube 1. Then, the coil sheath 2 is sleeved on the connecting part 101 of the metal tube 1, and the inner diameter of the coil sheath 2 is equal to the outer diameter of the connecting part 101, so that the coil sheath 2 is tightly connected with the connecting part 101, the coil sheath 2 is packaged and fixed on the metal tube 1 by using glue, the gap between the coil sheath 2 and the metal tube 1 is conveniently filled, the tightness of the connecting part of the coil sheath 2 and the metal tube 1 is ensured, and the glue coating is more convenient and the production is convenient. At this time, the assembly of the sensor probe is completed, the coil 3 and the metal tube 1 are not contacted all the time in the assembly process and after the assembly is completed, the coil 3 is prevented from being extruded and deformed by the metal tube 1 during the assembly, the contact abrasion with the metal tube 1 is prevented, and the structural integrity of the prefabricated coil is ensured.

According to the utility model, the prefabricated coil is directly fixed on the coil sheath 2 by using the prefabricated coil, so that compared with the existing sensor probe structure, a winding framework is omitted, materials are saved, the structure is simplified, the installation process is simplified, the installation space is saved, and the size of the probe is reduced. Meanwhile, the coil sheath 2 is an integral convenient-to-realize waterproof sealing requirement of the coil 3, only the matching size of the coil sheath 2 and the metal tube 1 needs to be considered in the assembly process, so that the sealing reliability is improved, the coil 3 is prevented from being crushed or broken due to the matching problem during the assembly of the coil sheath 2, the integrity of the coil 3 is ensured, and the production yield of the sensor probe is ensured.

In the actual production process, the coil 3 and the coil sheath 2 can also be connected by adopting the wire clamp, one end of the coil 3 passes through the accommodating part of the wire clamp, then the wire clamp is fixed on the coil 3 fixing sleeve by using the screw, and the wire clamp can be selected from R type, U type and N type. In addition, can also adopt threaded connection or buckle to connect between coil sheath 2 and the tubular metal resonator 1, increase the contact surface of both to guarantee sealed effect, guarantee the protection to coil 3, and then guarantee the accuracy that the sensor detected, coil sheath 2 and tubular metal resonator 1 junction also can improve sealed effect through winding raw material area or pad seal ring.

In a preferred embodiment, as shown in fig. 1, three coils 3 are arranged from inside to outside, the actual number of coils can be adjusted according to the design requirement of the sensor, and gaps are reserved between the coils 3 from inside to outside. Gaps are reserved among the coils 3 from bottom to top. Gaps are reserved between the coils 3 from inside to outside and from bottom to top, namely, each section of the coil 3 is not contacted with other adjacent coil sections, contact abrasion is not easy to occur during installation, and the coil 3 can work normally.

As shown in fig. 2, in a preferred example, the outer diameter of the coil 3 is smaller than the inner diameter of the metal tube 1, the height of the coil 3 is smaller than the depth of the coil sheath 2, and the coil 3 is axially spaced from the metal tube 1. Namely, the coil 3 is kept at a certain distance from the metal tube 1 in the radial direction and the axial direction, and the coil 3 and the metal tube 1 are kept relatively independent in the installation process and after the installation, so that the coil 3 is prevented from being worn by the metal tube 1, and the normal work of the coil 3 is prevented from being influenced.

Example two

As shown in fig. 3, a sensor of the present utility model includes the above-mentioned probe structure of an eddy current vibration displacement sensor, a coaxial line 4 connected to the sensor probe, and a coaxial connector 5 connected to the coaxial line 4. When installed, the two poles of the pre-formed coil extending into the metal tube 1 are connected to the two stubs of the coaxial line 4.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides an electric vortex vibration displacement sensor probe structure, includes the tubular metal resonator, sets up the coil sheath at the first end of tubular metal resonator, sets up coil in the coil sheath, its characterized in that, the coil be prefabricated coil, the coil with the coil sheath is connected, the coil with leave the space between the tubular metal resonator, the tubular metal resonator with coil sheath sealing connection.

2. An eddy current vibration displacement sensor probe structure as claimed in claim 1, wherein the coil is connected to the coil sheath by glue pouring.

3. The probe structure of an eddy current vibration displacement sensor according to claim 1, wherein the first end of the metal tube is provided with a connecting portion, the inner diameter of the coil sheath is equal to the outer diameter of the connecting portion, and the coil sheath is sleeved outside the connecting portion and connected with the metal tube.

4. A probe structure of an eddy current vibration displacement sensor according to claim 3, wherein the coil sheath is encapsulated with glue between the connection portions.

5. An eddy current vibration displacement sensor probe structure as claimed in claim 1, wherein the coil is provided with a plurality of turns from inside to outside.

6. An eddy current vibration displacement sensor probe structure as claimed in claim 5, wherein gaps are left between the coils from inside to outside.

7. An eddy current vibration displacement sensor probe structure as claimed in claim 1 wherein the coils are spaced from each other from bottom to top.

8. An eddy current vibration displacement sensor probe structure as claimed in claim 1, wherein the outer diameter of the coil is smaller than the inner diameter of the metal tube.

9. An eddy current vibration displacement sensor probe structure as claimed in claim 1 wherein the coil has a height less than the depth of the coil sheath and is axially spaced from the metal tube.

10. A sensor comprising an eddy current vibration displacement sensor probe structure as claimed in any one of claims 1 to 9.