Ultrasonic liquid level meter based on 316L stainless steel packaging

Abstract

The utility model relates to the technical field of liquid level meters, in particular to an ultrasonic liquid level meter based on 316L stainless steel packaging, which comprises an outer pipe, an eccentric inner pipe is arranged on the inner side of the outer pipe, an air outlet hole is arranged on the outer side of the outer pipe, the other side of the air outlet hole is communicated with the inside of the inner pipe, and a wire connector is arranged on the inner side of the outer pipe. An ultrasonic transducer and a temperature sensor are arranged between the inner pipe and the outer pipe, a flange is fixedly connected to the outer side of the outer pipe, and a protective cap is arranged at the top end of the outer pipe. The contact part of the ultrasonic liquid level meter and the liquid to be measured is only made of one material of 316L stainless steel, so that the ultrasonic liquid level meter is corrosion-resistant and cannot pollute the liquid to be measured, the obtained liquid level data is more accurate and cannot be influenced by other factors, the lead can be pulled out and sealed through the protective cap, and the outside of the ultrasonic liquid level meter can be directly flushed; the operation is convenient and fast, and no damage is caused to the wire.

Description

Technical Field

[0001] This utility model relates to the field of liquid level gauge technology, specifically to an ultrasonic liquid level gauge based on 316L stainless steel encapsulation. Background Technology

[0002] A level gauge is a device used to measure the horizontal height of liquid in a container or pipe. Its core function is to convert the liquid level height into a readable electrical or mechanical signal to achieve real-time monitoring and control of the liquid level. An ultrasonic level gauge is one type of level gauge. Its core principle is to use the speed of ultrasonic waves in the air and the time difference to calculate the liquid level height, which can complete the liquid level measurement without contact with the liquid.

[0003] However, in the existing technology, ultrasonic level gauges use non-contact measurement, which does not require direct contact with the liquid being measured, but are easily affected by foam, dust and vapor on the liquid surface, resulting in a decrease in measurement accuracy. While traditional contact level gauges can achieve high-precision measurement, they are susceptible to corrosion by corrosive media due to direct contact with the liquid, which may contaminate the liquid being measured. In addition, extra protection is required for the wires during cleaning, making the operation process cumbersome. Therefore, we propose an ultrasonic level gauge based on 316L stainless steel encapsulation. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an ultrasonic level gauge based on 316L stainless steel encapsulation, which can effectively solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides an ultrasonic level gauge based on 316L stainless steel encapsulation, including an outer tube, an eccentrically positioned inner tube inside the outer tube, an air vent on the outer side of the outer tube, the other side of the air vent being connected to the interior of the inner tube, an ultrasonic transducer and a temperature sensor being disposed between the inner tube and the outer tube, a flange being fixedly connected to the outer side of the outer tube, and a protective cap being disposed at the top of the outer tube.

[0007] Preferably, a sealing metal sheet is welded to the bottom of the outer tube, and a water inlet hole is opened at the bottom of the sealing metal sheet. The other side of the water inlet hole is connected to the inside of the inner tube.

[0008] Preferably, a movable VCR nut is provided on the outside of the flange.

[0009] Preferably, the flange top is provided with a protective sealing ring that is compatible with the protective cap.

[0010] Preferably, a rope is fixedly connected to the outside of the protective cap, and a sealing cap is fixedly connected to the other end of the rope.

[0011] Preferably, the bottom of the outer tube is provided with a bottom block, and the top of the bottom block is fixedly connected with an eccentrically positioned blocking block.

[0012] Preferably, the outer tube, inner tube, flange, and metal seal are all made of 316L stainless steel.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0014] 1. This utility model combines an ultrasonic level gauge and a contact level gauge. During detection, it can be inserted into the liquid to be measured. The part in contact with the liquid to be measured is made of only 316L stainless steel, which is corrosion-resistant and will not contaminate the liquid to be measured. The obtained liquid level data is more accurate and will not be affected by other factors, thus having good practicality.

[0015] 2. With the protective cap, the ultrasonic level gauge can be used to remove the wires after use, seal them with the protective cap, and then directly rinse the outside of the ultrasonic level gauge. The operation is convenient and quick and will not damage the wires.

[0016] 3. This utility model, through the setting of protective cap, sealing cap and plug, seals the top of the outer tube, the air outlet and the water inlet respectively when not in use, to prevent excessive dust in the air from entering the ultrasonic level gauge, thereby improving the service life of the ultrasonic level gauge and avoiding the impact of dust and debris on the test accuracy.

[0017] 4. By setting a temperature sensor, this utility model can detect the temperature of the liquid being measured while detecting the liquid level, thereby improving the diversity of detection data of the ultrasonic level gauge and meeting different detection needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic level gauge of this utility model;

[0020] Figure 2 This is a schematic diagram of the wire connector structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the outer tube of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the protective cap of this utility model;

[0023] Figure 5 This is a schematic diagram of the partial structure of the blocking block of this utility model;

[0024] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the outer tube of this utility model.

[0025] The labels in the diagram represent:

[0026] 1. Outer tube; 2. VCR nut; 3. Protective cap; 4. Rope; 5. Sealing cap; 6. Base block; 7. Wire connector; 8. Protective sealing ring; 9. Water inlet; 10. Sealing metal plate; 11. Flange; 12. Plug; 13. Inner tube; 14. Vent. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] Example 1:

[0030] Reference Figure 1-6 This is the first embodiment of the present invention, which discloses an ultrasonic level gauge based on 316L stainless steel encapsulation, including an outer tube 1, an inner tube 13 eccentrically disposed inside the outer tube 1, an air vent 14 opened on the outer side of the outer tube 1, the other side of the air vent 14 being connected to the inside of the inner tube 13, a wire connector 7 disposed inside the outer tube 1, a flange 11 fixedly connected to the outer side of the outer tube 1, a protective cap 3 disposed at the top of the outer tube 1, and an ultrasonic transducer and a temperature sensor disposed between the inner tube 13 and the outer tube 1.

[0031] Specifically, the ultrasonic transducer is positioned above the vent 14 and perpendicular to the surface of the liquid to be tested, and is used to detect the liquid level in the liquid to be tested and obtain detection data. The temperature sensor is positioned below the vent 14 and close to the inlet 9, so that the temperature of the liquid to be tested can be accurately measured.

[0032] The vent 14 facilitates the expulsion of gas when liquid enters the inner tube 13, thereby enabling accurate detection of the liquid level and improving data accuracy. The vent 14 is designed as an oblique hole, which facilitates the discharge of liquid when the liquid level drops.

[0033] The wire connector 7 is electrically connected to the temperature sensor and the ultrasonic transducer. It can also be connected to power lines, signal output lines, and control lines for power and data transmission and acquisition of detection data.

[0034] Specifically, a sealing metal sheet 10 is welded to the bottom of the outer tube 1, a movable VCR nut 2 is provided on the outside of the flange 11, and a protective sealing ring 8 that matches the protective cap 3 is provided on the top of the flange 11. The outer tube 1, inner tube 13, flange 11 and sealing metal sheet 10 are all made of 316L stainless steel. 316L stainless steel has good corrosion resistance and avoids being corroded by liquid.

[0035] This 316L stainless steel has 2-3% molybdenum (Mo) added to enhance its resistance to pitting corrosion and chloride corrosion, making it especially suitable for corrosive environments such as marine and chemical plants.

[0036] The protective sealing ring 8 can limit the protective cap 3, thereby ensuring the sealing of the protective cap 3 and protecting the wire connector 7;

[0037] The container of the liquid to be tested is pressed and sealed to the flange 11 by VCR nut 2;

[0038] Specifically, the bottom of the sealing metal sheet 10 is provided with a water inlet hole 9, and the other side of the water inlet hole 9 is connected to the inside of the inner tube 13.

[0039] The water inlet 9 facilitates the entry of the liquid to be tested. The liquid entering the water inlet 9 enters the inner tube 13, thereby facilitating the temperature sensor and ultrasonic transducer inside the inner tube 13 to detect the liquid level.

[0040] Example 2:

[0041] Reference Figure 1-6 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0042] A rope 4 is fixedly connected to the outside of the protective cap 3, and a sealing cap 5 is fixedly connected to the other end of the rope 4. A bottom block 6 is provided at the bottom of the outer tube 1, and an eccentrically positioned blocking block 12 is fixedly connected to the top of the bottom block 6.

[0043] The outer side of the bottom block 6 is provided with anti-slip grooves to facilitate the removal of the block 12 from the water inlet hole 9 for liquid level testing;

[0044] The rope 4 connects the protective cap 3 and the sealing cap 5 for storage during use and protection of the ultrasonic level gauge when not in use. The plug 12 blocks the water inlet 9 to prevent dust from entering when not in use. Dust particles scatter and absorb ultrasonic signals, causing sound energy attenuation and weakening of the received echo signal, which may lead to misjudgment of the liquid level by the level gauge.

[0045] The remaining structure is the same as that in Example 1.

[0046] It should be noted that temperature sensors and ultrasonic transducers are both existing technologies and are well known in the field, so they will not be described in detail here.

[0047] The workflow of this utility model is as follows:

[0048] When using, remove the plug 12 in the water inlet 9 at the bottom of the outer tube 1, the sealing cap 5 in the air outlet 14, and the protective cap 3 on the top of the outer tube 1. Place the removed plug 12, sealing cap 5, and protective cap 3 into a clean container for storage.

[0049] The outer tube 1 is inserted into the container containing the liquid to be tested. The liquid to be tested enters the inner tube 13 through the water inlet 9. As the liquid enters, the gas in the inner tube 13 is discharged through the air outlet 14 until the bottom of the flange 11 contacts the top of the container containing the liquid to be tested. Then, the container containing the liquid to be tested is pressed and sealed with the flange 11 by the VCR nut 2. The liquid level and temperature are detected by the temperature sensor and the ultrasonic transducer.

[0050] After the test is completed, the ultrasonic level gauge is removed from the container containing the liquid to be tested. When the ultrasonic level gauge is removed, the liquid level drops due to the oblique hole of the vent 14, which facilitates the discharge of liquid from the inner tube 13. Then, the connecting wire is pulled out, the protective cap 3 is screwed on, and the ultrasonic level gauge is cleaned with cleaning water. After cleaning, the plug 12 and the sealing cap 5 are plugged in.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An ultrasonic level gauge based on 316L stainless steel encapsulation, characterized in that: The device includes an outer tube (1), an inner tube (13) with an eccentric arrangement on the inner side of the outer tube (1), an air outlet (14) on the outer side of the outer tube (1), the other side of the air outlet (14) being connected to the interior of the inner tube (13), a wire connector (7) on the inner side of the outer tube (1), a flange (11) fixedly connected to the outer side of the outer tube (1), a protective cap (3) on the top of the outer tube (1), and an ultrasonic transducer and a temperature sensor between the inner tube (13) and the outer tube (1).

2. The ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, The outer tube (1) has a sealing metal sheet (10) welded to its bottom. The sealing metal sheet (10) has a water inlet hole (9) at its bottom. The other side of the water inlet hole (9) is connected to the inside of the inner tube (13).

3. The ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, A movable VCR nut (2) is provided on the outside of the flange (11).

4. An ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, The flange (11) is provided with a protective sealing ring (8) that is compatible with the protective cap (3) at the top.

5. An ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, The protective cap (3) is fixedly connected to a rope (4) on the outside, and a sealing cap (5) is fixedly connected to the other end of the rope (4).

6. An ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, The bottom of the outer tube (1) is provided with a bottom block (6), and the top of the bottom block (6) is fixedly connected with an eccentrically arranged blocking block (12).

7. An ultrasonic level gauge based on 316L stainless steel encapsulation according to claim 1, characterized in that, The outer tube (1), inner tube (13), flange (11) and sealing metal sheet (10) are all made of 316L stainless steel.

Images