CN211717553U

CN211717553U - Three-terminal probe structure of radio frequency admittance level meter

Info

Publication number: CN211717553U
Application number: CN202020663133.8U
Authority: CN
Inventors: 李富强; 孙立东; 郭佳琛
Original assignee: TIANJIN HENGLI YUANDA INSTRUMENTS CO Ltd
Current assignee: TIANJIN HENGLI YUANDA INSTRUMENTS CO Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-10-20
Anticipated expiration: 2030-04-27

Abstract

The utility model provides a three-terminal probe structure of a radio frequency admittance level meter, which comprises a signal transmission part, an outer pipe part, a central rod and a support rod, wherein the signal transmission part comprises a sealing part, a first flange plate and a central rod connector; the outer pipe part comprises an outer pipe, a connecting pipe extends out of the middle part of the outer pipe, and a second flange plate is arranged at the outer end of the connecting pipe; a central rod connector of the signal transmission part penetrates through the connecting pipe to enter the outer pipe, and the first flange plate is fixedly connected with the second flange plate; and the central rod connector is connected with a central rod, and two outer ends of the central rod are respectively fixed in the outer tube through one supporting rod. The utility model discloses a probe structure has adopted both ends to be the mounting structure of measuring terminal, makes measuring terminal length obviously increase, has increased the measurable capacitance value of probe to make measuring result more accurate, further reduce measuring error value.

Description

Three-terminal probe structure of radio frequency admittance level meter

Technical Field

The utility model belongs to the technical field of the radio frequency admittance level meter, especially, relate to a three-terminal probe structure of radio frequency admittance level meter.

Background

The radio frequency admittance level meter is a general level meter used for measuring continuous level, and the radio frequency admittance is a novel level control technology which is developed from capacitance, prevents hanging of materials, is more reliable and accurate, and has wider applicability, and is the upgrade of the capacitance level technology. By admittance, the meaning of admittance is the inverse of the impedance in the electrical system, which is a combination of resistive, capacitive and inductive components, whereas radio frequency, i.e. the high frequency radio spectrum, is understood to mean that the admittance is measured by high frequency radio waves. When the instrument works, the sensor of the instrument, the filling wall and the measured medium form an admittance value, when the material level changes, the admittance value changes correspondingly, and the circuit unit converts the measured admittance value into a material level signal to be output, so that the material level measurement is realized.

The probe structure of the existing radio frequency admittance level meter only has one measuring end, the length of the measuring end is limited, and the accuracy of the data measured by the probe is poor.

Disclosure of Invention

In view of this, the present invention is directed to a three-terminal probe structure of a radio frequency admittance level meter, so as to optimize the probe measurement data.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a three-terminal probe structure of a radio frequency admittance level meter comprises a signal transmission part, an outer pipe part, a central rod and a support rod, wherein the signal transmission part comprises a sealing part, a first flange and a central rod connector; the outer pipe part comprises an outer pipe, a connecting pipe extends out of the middle part of the outer pipe, and a second flange plate is arranged at the outer end of the connecting pipe; a central rod connector of the signal transmission part penetrates through the connecting pipe to enter the outer pipe, and the first flange plate is fixedly connected with the second flange plate; and the central rod connector is connected with a central rod, and two outer ends of the central rod are respectively fixed in the outer tube through one supporting rod.

Furthermore, two bracing pieces are respectively in threaded connection at one end of two well core rods, and the other end of two well core rods is respectively in threaded connection at both ends of well core rod connector.

Furthermore, a sealing groove is formed in the surface, in contact with the first flange plate, of the second flange plate, an O-shaped ring is arranged in the sealing groove, and the first flange plate and the second flange plate are fixed through screws.

Furthermore, flanges are arranged at two ends of the outer pipe.

Further, the center rod is located on the axis of the outer tube.

Compared with the prior art, the utility model discloses following advantage has:

the utility model discloses a probe structure has realized through well core rod that both ends are the mounting structure of measuring terminal, makes measuring terminal length obviously increase, has increased the measurable capacitance value of probe to make measuring result more accurate, further reduce measuring error value.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a sealing member according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an outer tube member according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a three-terminal probe structure of a radio frequency admittance level meter according to an embodiment of the present invention.

Description of reference numerals:

number 1: a sealing member; sequence number 2: a first flange plate; sequence No. 3: a center rod connector; number 4: a second flange plate; number 5: a connecting pipe; number 6: an outer tube; number 7: a flange; number 9: a socket head cap screw; number 10: an O-shaped ring; number 11: an outer tube member; number 12: a center pole; number 13: a support rod.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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 indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The three-terminal probe structure of the radio frequency admittance level meter of the present embodiment, as shown in fig. 1 to 3, comprises a signal transmission member, an outer tube member 11, a central rod 12 and a support rod 13,

the signal transmission part comprises a sealing part 1, a first flange 2 and a central rod connector 3, wherein the first flange 2 is arranged in the middle of the sealing part 1, and the central rod connector 3 is arranged at the bottom of the sealing part 1;

the outer pipe part 11 comprises an outer pipe 6, a connecting pipe 5 extends out of the middle part of the outer pipe 6, and a second flange plate 4 is arranged at the outer end of the connecting pipe 5;

a central rod connector 3 of the signal transmission part penetrates through a connecting pipe 5 to enter an outer pipe 6, and a first flange plate 2 is fixedly connected with a second flange plate 4; the central rod connector 3 is connected with a central rod 12, and two outer ends of the central rod 12 are respectively fixed in the outer tube 6 through one supporting rod 13.

The two support rods 13 are respectively in threaded connection with one ends of the two central rods 12, and the other ends of the two central rods 12 are respectively in threaded connection with two ends of the central rod connector 3.

The surface that second ring flange 4 and first ring flange 2 contact is equipped with the seal groove, sets up O type circle 10 in the seal groove, and first ring flange 2 passes through the fix with screw with second ring flange 4.

And flanges 7 which are convenient for connecting other components are arranged at two ends of the outer pipe 6.

The central rod 12 is located on the axis of the outer tube 6.

The mounting steps of the three-terminal probe structure of the radio frequency admittance level meter of the present embodiment are as follows:

1. welding the sealing part 1, the first flange plate 2 and the central rod connector 3 to form a signal transmission part, as shown in fig. 1;

2. welding the second flange 4, the connecting pipe 5, the outer pipe 6 and the flange 7 to form an outer pipe part 11, as shown in fig. 2;

3. installing the O-shaped ring 10 in the sealing groove of the second flange plate 4;

4. mounting the signal transmission member on the outer pipe member 11, that is, mounting the first flange 2 on the second flange 4, and pressing the O-ring 10;

5. mounting inner hexagonal socket head cap screws 9, fixing the first flange plate 2 and the second flange plate 4, and ensuring sealing;

6. the support rod 13 is arranged on the central rod 12 and fixed through threaded installation;

7. installing a central rod 12 at two ends of the central rod connector 3, and fixing the central rod by threads;

8. the support rod 13 is screwed outwards, so that the support rod 13 is pressed against the inner wall of the outer pipe 6, and the central rod 12 is fixed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-terminal probe structure of a radio frequency admittance level meter is characterized by comprising a signal transmission component, an outer tube component (11), a central rod (12) and a support rod (13),

the signal transmission component comprises a sealing component (1), a first flange plate (2) and a central rod connector (3), wherein the first flange plate (2) is arranged in the middle of the sealing component (1), and the central rod connector (3) is arranged at the bottom of the sealing component;

the outer pipe part (11) comprises an outer pipe (6), a connecting pipe (5) extends out of the middle part of the outer pipe (6), and a second flange (4) is arranged at the outer end of the connecting pipe (5);

a central rod connector (3) of the signal transmission part penetrates through a connecting pipe (5) to enter an outer pipe (6), and a first flange plate (2) is fixedly connected with a second flange plate (4); well core rod (12) are connected in well core rod connector (3), and two outer ends of well core rod (12) are respectively through one bracing piece (13) are fixed in outer tube (6).

2. The three-terminal probe structure of a radio frequency admittance level gauge of claim 1, wherein: two bracing pieces (13) are respectively in threaded connection at one end of two well core rods (12), and the other end of two well core rods (12) is respectively in threaded connection at both ends of well core rod connector (3).

3. The three-terminal probe structure of a radio frequency admittance level gauge of claim 1, wherein: the surface that second ring flange (4) and first ring flange (2) contact is equipped with the seal groove, sets up O type circle (10) in the seal groove, and first ring flange (2) pass through the fix with screw with second ring flange (4).

4. The three-terminal probe structure of a radio frequency admittance level gauge of claim 1, wherein: flanges (7) are arranged at two ends of the outer pipe (6).

5. The three-terminal probe structure of a radio frequency admittance level gauge of claim 1, wherein: the central rod (12) is located on the axis of the outer tube (6).