High-temperature-resistant magnetostrictive liquid level meter

Abstract

The utility model belongs to the technical field of liquid level meters, and particularly relates to a high-temperature-resistant magnetostriction liquid level meter which comprises a liquid level meter body, a positioning clamping groove, an installation sliding block, a sliding groove, a sensor guide pipe, a clamping rod sliding cavity, a clamping rod and a clamping rod push spring. The installation sliding block is fixedly installed on the sensor guide pipe, the sensor guide pipe is installed on the liquid level meter body in a sliding mode, the positioning clamping grooves are formed in the liquid level meter body, the clamping rod sliding cavities are formed in the installation sliding block, the clamping rods are installed in the clamping rod sliding cavities in a sliding mode, and meanwhile the effect of protecting the sensor guide pipe when the liquid level meter is not used is achieved. The sensor protection guide pipe slides along the liquid level meter main body, slides out of the sensor protection guide pipe when in use and slides into the sensor protection guide pipe when not in use, so that a protection effect on the sensor protection guide pipe is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level gauges, and in particular relates to a high-temperature resistant magnetostrictive liquid level gauge. Background Art

[0002] Industrial production often requires high-precision liquid level measurement, often in environments with high temperatures. Conventional magnetostrictive level gauges are primarily used to measure liquid surfaces and interfaces. These gauges have no forced moving parts, a simple structure, and offer rapid continuous, real-time measurement, facilitating real-time monitoring of industrial sites. They are widely used for level and interface measurement in various liquid tanks, including petroleum and chemical raw material storage, industrial processes, biochemicals, pharmaceuticals, food and beverages, tank farm management, and underground storage at gas stations. However, conventional magnetostrictive products operate only at temperatures below 130°C and lack protection for the sensor's guide tube. Utility Model Content

[0003] The utility model aims to provide a high-temperature resistant magnetostrictive liquid level gauge to solve the technical problem that the guide tube of the protection sensor cannot be protected.

[0004] To achieve the above objectives, the specific technical solution of a high-temperature resistant magnetostrictive liquid level gauge of the present invention is as follows:

[0005] A high-temperature resistant magnetostrictive liquid level gauge includes a liquid level gauge body, a positioning slot, an installation slider, a slot, a sensor guide tube, a rod sliding cavity, a rod, and a rod push spring. The liquid level gauge body is provided with a slot, in which a mounting slider is slidably installed, the mounting slider is fixedly installed on the sensor guide tube, the sensor guide tube is slidably installed on the liquid level gauge body, the level gauge body is provided with a positioning slot, and multiple positioning slots are provided, the installation slider is provided with a rod sliding cavity, in which a rod is slidably installed, a rod push spring is provided between the rod and the rod sliding cavity, and the rod is cooperatively connected with the positioning slot.

[0006] Furthermore, a limit ring is fixedly installed on the sensor guide tube, a communicating hole is opened on the sensor guide tube, and a plurality of communicating holes are provided, and a float is slidably installed in the sensor guide tube.

[0007] Furthermore, a group of permanent magnetic rings are arranged in the float.

[0008] Furthermore, a plurality of the positioning slots are arranged in a linear array along the liquid level meter body.

[0009] Furthermore, a plurality of the communication holes are arranged in a linear array along the sensor guide tube.

[0010] The advantages of the present invention are:

[0011] 1. The circuit part of the sensor will excite a pulse current on the waveguide wire, and when the current propagates along the waveguide wire, it will generate a pulse current magnetic field around the waveguide wire. A float is provided in the sensor guide tube of the magnetostrictive liquid level gauge, and this float can move up and down along the sensor guide tube as the liquid level changes. When the pulse current magnetic field meets the magnetic field generated by the magnetic ring inside the float, since the two magnetic fields are in orthogonal directions, the resulting magnetic field force causes the waveguide wire made of magnetostrictive material to generate a torsional wave pulse at the position of the float. This pulse is transmitted back along the waveguide wire at a fixed speed and detected by the detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of the float, that is, the position of the liquid level, can be accurately determined. A high-temperature resistant waveguide wire is selected and firmly placed in the sensor guide tube using high-temperature resistant insulating material. The upper waveguide wire is lengthened and a special radiator is installed to keep the meter head away from high-temperature working conditions. It can be used in

[0012] It can also work stably at high temperature of 250℃;

[0013] 2. At the same time, in order to protect the sensor guide tube when not in use, the protective sensor guide tube is slid along the liquid level meter body. When in use, the protective sensor guide tube is slid out, and when not in use, the protective sensor guide tube is slid in, thereby protecting the protective sensor guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the cutting line position;

[0016] Figure 3 for Figure 2 Cross-sectional view along section AA;

[0017] Figure 4 for Figure 2 Cross-sectional view along section AA;

[0018] Figure 5 for Figure 4 A partial enlarged view of

[0019] Explanation of the markings in the figure: liquid level meter body 1; positioning slot 2; mounting slide 3; slide slot 4; sensor guide tube 5; limit ring 6; connecting hole 7; float 8; clamping rod sliding cavity 9; clamping rod 10; clamping rod push spring 11. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] Embodiment 1

[0023] As Figures 1-5As shown, a high-temperature resistant magnetostrictive liquid level gauge includes a liquid level gauge body 1, a positioning slot 2, an installation slider 3, a slot 4, a sensor guide tube 5, a rod slide cavity 9, a rod 10, and a rod push spring 11. The liquid level gauge body 1 is provided with a slot 4, in which a mounting slider 3 is slidably installed, the mounting slider 3 is fixedly installed on the sensor guide tube 5, and the sensor guide tube 5 is slidably installed on the liquid level gauge body 1. The level gauge body 1 is provided with a positioning slot 2, and a plurality of positioning slots 2 are provided. The installation slider 3 is provided with a rod slide cavity 9, in which a rod 10 is slidably installed, a rod push spring 11 is provided between the rod 10 and the rod slide cavity 9, and the rod 10 is cooperatively connected with the positioning slot 2. With such a configuration, the circuit part of the sensor will excite a pulse current on the waveguide wire, and when the current propagates along the waveguide wire, a pulse current magnetic field will be generated around the waveguide wire. The magnetostrictive liquid level gauge's sensor guide tube 5 houses a float 8, which moves up and down along the sensor guide tube 5 as the liquid level changes. When the pulse current's magnetic field meets the magnetic field generated by the magnetic ring within float 8, the two magnetic fields are orthogonal. The resulting combined force causes the waveguide wire, made of magnetostrictive material, to generate a torsional wave pulse at the location of float 8. This pulse travels back along the waveguide wire at a fixed speed and is detected by a detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of float 8, and therefore the liquid level, can be precisely determined. A high-temperature-resistant waveguide wire is selected and securely placed within the sensor guide tube 5 using high-temperature insulating material. The upper waveguide wire is lengthened and fitted with a special heat sink to protect the meter from high-temperature conditions. It can work stably even at a high temperature of 250°C; at the same time, in order to protect the sensor guide tube 5 when not in use, the protective sensor guide tube 5 is slid along the liquid level meter body 1. When in use, the protective sensor guide tube 5 is slid out, and when not in use, the protective sensor guide tube 5 is slid in, thereby protecting the protective sensor guide tube 5.

[0024] Example 2

[0025] like Figures 1-5 As shown, a limit ring 6 is fixedly installed on the sensor guide tube 5 , a communicating hole 7 is opened on the sensor guide tube 5 , and a plurality of communicating holes 7 are provided. A float 8 is slidably installed in the sensor guide tube 5 .

[0026] Wherein, a group of permanent magnetic rings are arranged in the float 8.

[0027] Wherein, the plurality of positioning slots 2 are arranged in a linear array along the liquid level meter body 1 .

[0028] The plurality of communication holes 7 are arranged in a linear array along the sensor guide tube 5 .

[0029] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A high temperature resistant magnetostrictive level gauge, characterized in that: The liquid level meter comprises a main body (1), a positioning slot (2), an installation slide block (3), a slot (4), a sensor guide tube (5), a rod slide cavity (9), a rod (10), and a rod push spring (11). The liquid level meter main body (1) is provided with a slot (4), a mounting slide block (3) is slidably installed in the slot (4), the mounting slide block (3) is fixedly installed on the sensor guide tube (5), the sensor guide tube (5) is slidably installed on the liquid level meter main body (1), the main body (1) is provided with a positioning slot (2), and a plurality of positioning slots (2) are provided, the installation slide block (3) is provided with a rod slide cavity (9), a rod (10) is slidably installed in the rod slide cavity (9), a rod push spring (11) is provided between the rod (10) and the rod slide cavity (9), and the rod (10) is connected in cooperation with the positioning slot (2).

2. A high temperature resistant magnetostrictive liquid level gauge according to claim 1, characterized in that: A limit ring (6) is fixedly installed on the sensor guide tube (5), a communicating hole (7) is opened on the sensor guide tube (5), and a plurality of communicating holes (7) are provided. A float (8) is slidably installed in the sensor guide tube (5).

3. A high temperature resistant magnetostrictive liquid level gauge according to claim 2, characterized in that: A group of permanent magnetic rings are arranged inside the float (8).

4. A high temperature resistant magnetostrictive liquid level gauge according to claim 1, characterized in that: The plurality of positioning slots (2) are arranged in a linear array along the liquid level meter body (1).

5. The high temperature resistant magnetostrictive liquid level gauge according to claim 2, characterized in that: The plurality of communication holes (7) are arranged in a linear array along the sensor guide tube (5).

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