High-voltage radio frequency admittance sensor

Abstract

The utility model discloses a high-voltage radio-frequency admittance sensor, relates to the technical field of radio-frequency admittance sensors, and aims to solve the problems that an existing sensor lacks an outer protection structure of a detection end, an object to be detected directly exerts acting force on the detection end, the service life of the sensor is easily shortened, and the overall practicability needs to be improved. According to the technical scheme, the connecting device is characterized by comprising a connecting pipe section, a connecting pipe is fixedly connected to the end face of the connecting pipe section, one end of the connecting pipe is integrally connected with an arc-shaped structure, the arc-shaped structure is sleeved with a limiting pipe, the limiting pipe is sleeved with a protective pipe, and an extension spring is arranged on the end face of the protective pipe; the other end of the extension spring is connected to the end face of the connecting pipe section. The effects of performing external protection operation on the detection end, preventing the to-be-detected object from directly generating acting force on the detection end, prolonging the service life of the sensor and being high in practicability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to radio frequency admittance sensor technical field especially is related to a high pressure radio frequency admittance sensor. BACKGROUND

[0002] Radio frequency admittance sensor is a new type of material level measuring instrument based on capacitive material level switch technology, through high frequency electromagnetic field forms a loop between inductor and measured medium, realizes the detection of material level, radio frequency admittance sensor effectively solves the problem that medium cannot be measured due to material hanging in various working conditions, is especially suitable for the detection of various materials with strong adhesion, accurate measurement and no misoperation, and is widely applied to liquid, slurry, dust, material level and the alarm and control of two liquid level.

[0003] The existing sensor lacks the outer protection structure of the detection end, and the detected object directly generates force on the detection end, which can easily reduce the service life of the sensor, and the overall practicality needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model discloses a high pressure radio frequency admittance sensor can carry out outer protection operation to the detection end, avoids the detected object directly generating force on the detection end, improves the service life of the sensor, and has high practicality.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A high pressure radio frequency admittance sensor, including connecting pipe section, the end surface of connecting pipe section is fixedly connected with connecting pipe, one end of connecting pipe is integrally connected with arc structure, the outside of arc structure is sleeved with limit tube, the outside of limit tube is sleeved with protection pipe, and the end surface of protection pipe is provided with tension spring, and the other end of tension spring is connected on the end surface of connecting pipe section.

[0007] By adopting the above technical scheme, the detection end is provided with a protection structure, which avoids the detection end being directly impacted by the detected object, and can buffer the impact degree to a certain extent.

[0008] Further, the middle shaft position of the end surface of the connecting pipe section is fixedly connected with a probe rod, which penetrates the inside middle shaft position of the connecting pipe, the limit tube and the protection pipe.

[0009] By adopting the above technical scheme, the probe rod can be effectively protected.

[0010] Further, the end surface of the protection pipe and the end surface of the connecting pipe section are fixedly connected with a plurality of connecting ears, and the two ends of the tension spring are respectively hooked on the connecting ears of the protection pipe and the connecting pipe section.

[0011] By adopting the technical scheme, the tension spring can be conveniently installed.

[0012] Further, an arc-shaped concave is arranged on the inner wall of the limiting tube and adheres to the outer surface of the arc-shaped structure, and an engaging groove is arranged on the inner wall of the protective tube, and the limiting tube is engaged in the engaging groove.

[0013] By adopting the technical scheme, the protective tube can rotate at the connecting position of the limiting tube and the arc-shaped structure.

[0014] Further, one end of the connecting tube section is fixedly connected with a connecting end block, the end surface of the connecting end block is fixedly connected with a shell, the side surface of the shell is provided with a mounting hole, an electric connector is fixedly installed in the mounting hole, and the shell is installed with an electronic processing unit.

[0015] By adopting the technical scheme, it is ensured that the sensor can work stably.

[0016] Further, a plurality of through holes are arranged on the outer surface of the protective tube.

[0017] By adopting the technical scheme, it is ensured that the probe rod can effectively detect the position of the external object.

[0018] To sum up, the beneficial technical effects of the utility model are as follows:

[0019] The utility model discloses a protective tube is used for the external protection operation of probe rod, can effectively avoid the object of being detected direct impact probe rod, can effectively improve the structural stability and service life of probe rod, because the limiting tube is movably sleeved outside the arc-shaped structure, the protective tube is sleeved outside the limiting tube, the inner diameter size of the protective tube is greater than the diameter size of probe rod, therefore when the protective tube is impacted, can slightly deflect the position, at this time, part of the tension spring is stretched, can effectively eliminate the impact force of the external impact on the protective tube, the overall anti-collision coefficient is improved, and the working stability is further improved. DRAWINGS

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is the A place enlarged view of the utility model Figure 1 .

[0022] In the drawing: 1, shell, 2, connecting end block, 3, electric connector, 4, connecting tube section, 5, connecting tube, 6, arc-shaped structure, 7, tension spring, 8, limiting tube, 9, protective tube, 10, probe rod, 11, connecting lug. DETAILED DESCRIPTION

[0023] The utility model method will be further explained in detail below in combination with the drawings.

[0024] Referring to Figure 1 , figure 2, a high voltage radio frequency admittance sensor includes connecting pipe section 4, the end surface of connecting pipe section 4 is fixedly connected with connecting pipe 5, one end of connecting pipe 5 is integrally connected with arc structure 6, the outside of arc structure 6 is sleeved with limit tube 8, the outside of limit tube 8 is sleeved with protective tube 9, a plurality of through holes are formed in the outer surface of protective tube 9, stretch spring 7 is arranged on the end surface of protective tube 9, the other end of stretch spring 7 is connected to the end surface of connecting pipe section 4, probe rod 10 is fixedly connected to the central axis position of the end surface of connecting pipe section 4, and the inside central axis position of connecting pipe 5, limit tube 8 and protective tube 9 is penetrated, a plurality of connecting ears 11 are fixedly connected to the end surface of protective tube 9 and the end surface of connecting pipe section 4, the two ends of stretch spring 7 are respectively hooked on the connecting ears 11 of protective tube 9 and connecting pipe section 4, an arc-shaped concave surface that is attached to the outer surface of arc structure 6 is arranged on the inner wall of limit tube 8, a clamping groove is arranged on the inner wall of protective tube 9, and limit tube 8 is clamped in the inside of the clamping groove, wherein the probe rod 10 can be protected externally by protective tube 9, the structure stability and service life of probe rod 10 can be effectively improved, limit tube 8 is movably sleeved on the outside of arc structure 6, protective tube 9 is sleeved on the outside of limit tube 8, protective tube 9 is connected to the end of connecting pipe section 4 by a plurality of stretch springs 7, and the inner diameter size of protective tube 9 is greater than the diameter size of probe rod 10, so when protective tube 9 is impacted, it can be slightly deflected in position, at this time, part of stretch spring 7 is stretched, the impact force of external impact on protective tube 9 can be effectively eliminated, the overall anti-collision coefficient is improved, and the working stability is further improved.

[0025] Referring to figure 1, one end of connecting pipe section 4 is fixedly connected with connecting end block 2, the end surface of connecting end block 2 is fixedly connected with shell 1, the side surface of shell 1 is provided with mounting hole, and electric connection head 3 is fixedly installed in the inside of mounting hole, and electronic processing unit is installed in the inside of shell 1, wherein the sensor can be connected with external digital display equipment or acquisition equipment by electric connection head 3.

[0026] Working principle: when using, the sensor is installed at the designated position, then the external device is electrically connected with the electronic processing unit inside the shell 1 through the electrical connector 3, at this time, normal work can be carried out, when working, the detected object first contacts with the protective tube 9, then contacts with the probe rod 10, at this time, the impact force generated by the detected object acts on the protective tube 9, especially in the process of detecting particulate matter, the detected object can effectively avoid directly impacting the probe rod 10, which can effectively improve the structural stability and service life of the probe rod 10, since the limiting tube 8 is movably sleeved outside the arc-shaped structure 6, the protective tube 9 is sleeved outside the limiting tube 8, the protective tube 9 is connected with the end of the connecting pipe section 4 through a plurality of extension springs 7, and the inner diameter size of the protective tube 9 is greater than the diameter size of the probe rod 10, so when the protective tube 9 is impacted, it can be slightly deflected in position, at this time, part of the extension spring 7 is stretched, which can effectively eliminate the impact force of external impact on the protective tube 9.

[0027] The real-time examples of the specific embodiment are the preferred examples of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A high pressure radio frequency admittance sensor comprising a connecting tube section (4), characterized in that: The end surface of the connecting pipe section (4) is fixedly connected with a connecting pipe (5), one end of the connecting pipe (5) is integrally connected with an arc-shaped structure (6), the outer part of the arc-shaped structure (6) is sleeved with a limiting pipe (8), the outer part of the limiting pipe (8) is sleeved with a protective pipe (9), the end surface of the protective pipe (9) is provided with a tension spring (7), the other end of the tension spring (7) is connected to the end surface of the connecting pipe section (4).

2. A high pressure RF admittance sensor according to claim 1, wherein: The end surface of the connecting pipe section (4) is fixedly connected with a connecting pipe (5), one end of the connecting pipe (5) is integrally connected with an arc-shaped structure (6), the outer part of the arc-shaped structure (6) is sleeved with a limiting pipe (8), the outer part of the limiting pipe (8) is sleeved with a protective pipe (9), the end surface of the protective pipe (9) is provided with a tension spring (7), the other end of the tension spring (7) is connected to the end surface of the connecting pipe section (4).

3. A high pressure RF admittance sensor according to claim 1, wherein: The end surface of the connecting pipe section (4) is fixedly connected with a connecting pipe (5), one end of the connecting pipe (5) is integrally connected with an arc-shaped structure (6), the outer part of the arc-shaped structure (6) is sleeved with a limiting pipe (8), the outer part of the limiting pipe (8) is sleeved with a protective pipe (9), the end surface of the protective pipe (9) is provided with a tension spring (7), the other end of the tension spring (7) is connected to the end surface of the connecting pipe section (4).

4. A high pressure RF admittance sensor according to claim 1, wherein: The inner wall of the limiting pipe (8) is provided with an arc-shaped concave surface which is attached to the outer part of the arc-shaped structure (6), the inner wall of the protective pipe (9) is provided with a clamping groove, and the limiting pipe (8) is clamped in the clamping groove.

5. A high pressure RF admittance sensor according to claim 1, wherein: One end of the connecting pipe section (4) is fixedly connected with a connecting end block (2), the end surface of the connecting end block (2) is fixedly connected with a shell (1), the side surface of the shell (1) is provided with a mounting hole, the inner part of the mounting hole is fixedly installed with an electric connector (3), and the inner part of the shell (1) is installed with an electronic processing unit.

6. A high pressure RF admittance sensor according to claim 1, wherein: The outer surface of the protective pipe (9) is provided with a plurality of through holes.

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