Liquid level ultrasonic detection device
By setting the emission surface of the probe of the ultrasonic level meter at a position higher than the top opening of the liquid container and introducing a dry air flow, the problem of condensation affecting measurement accuracy in high-temperature environments is solved, and maintenance is reduced.
Patent Information
- Application Number
- CN202421258985.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-04
AI Technical Summary
In high temperature environments, the water vapor in the reservoir will form condensation on the probe of the ultrasonic level gauge, affecting the accuracy of the measurement results and increasing the maintenance volume of maintenance personnel.
The emission surface of the probe of the ultrasonic level meter is set by the mounting bracket to a position higher than the top opening of the liquid container, forming an airflow channel to introduce a dry airflow and reducing the influence of steam on the probe.
Effectively reduce or eliminate the adverse impact of condensation on liquid level detection results, reduce the demand for probe cleaning by maintenance personnel, and reduce maintenance.
Smart Images
Figure CN222912854U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of detection technologies, and particularly to a liquid level ultrasonic detection device. Background Art
[0002] An ultrasonic level gauge is a non-contact level detection instrument, usually directly installed above the liquid or solid medium to be detected. Using the principle of sound waves traveling back and forth in the air, it measures and displays the height position of the object to be detected. Ultrasonic level gauges are widely used for the level measurement of various liquids and solids.
[0003] In some related technologies, to meet the need for liquid level detection in a liquid storage tank, an ultrasonic level gauge is directly installed on the manhole cover at the top of the liquid storage tank. Utility Model Content
[0004] It has been found through research that although the ultrasonic level gauge is usually above the liquid surface, when the ambient temperature is high, the air in the liquid storage tank contains more water vapor, which will cause condensation on the probe of the ultrasonic level gauge. To a certain extent, the condensation will affect the accuracy of the measurement results, and correspondingly, maintenance personnel need to clean it, increasing the maintenance workload of the maintenance personnel.
[0005] In view of this, embodiments of the present disclosure provide a liquid level ultrasonic detection device that can reduce the adverse effects of steam on the liquid level detection by the ultrasonic level gauge.
[0006] In one aspect of the present disclosure, there is provided a liquid level ultrasonic detection device for realizing the detection of the liquid level in a liquid container, including:
[0007] A mounting bracket; and
[0008] An ultrasonic level gauge having a probe and installed on the mounting bracket;
[0009] Wherein, the emitting surface of the probe is arranged at a position higher than the top opening of the liquid container.
[0010] In some embodiments, the bottom of the mounting bracket is installed on the top surface of the liquid container.
[0011] In some embodiments, the mounting bracket has a mounting portion and a plurality of support legs. The mounting portion is fixedly connected to the tops of the plurality of support legs and is used to mount the ultrasonic level gauge. At least one group of adjacent support legs among the plurality of support legs forms an air flow channel above the top surface of the liquid container.
[0012] In some embodiments, the mounting bracket has a rectangular mounting portion and four support legs. The four corners of the rectangular mounting portion are respectively fixedly connected to the tops of the four support legs, and the four support legs form two sets of mutually perpendicular and intersecting air flow channels.
[0013] In some embodiments, the liquid level ultrasonic detection device further comprises:
[0014] A blower, arranged on the side of the liquid container, configured to generate a dry air flow flowing into the air flow channel.
[0015] In some embodiments, the emitting surface of the probe is 10 - 70 cm higher than the top opening of the liquid container.
[0016] In some embodiments, the emitting surface of the probe is 40 - 60 cm higher than the top opening of the liquid container.
[0017] In some embodiments, the ultrasonic level gauge is adjustable in height in the vertical direction on the mounting rack.
[0018] In some embodiments, the liquid level ultrasonic detection device further comprises:
[0019] A height adjustment mechanism, arranged on the mounting rack and connected to the ultrasonic level gauge.
[0020] In some embodiments, the orthographic projection of the emitting surface of the probe on the top surface of the liquid container is located within the top opening of the liquid container, and the area of the orthographic projection is smaller than the cross-sectional area of the top opening.
[0021] According to the embodiments of the present disclosure, through the mounting rack, the emitting surface of the probe of the ultrasonic level gauge is arranged at a position higher than the top opening of the liquid container, so that the emitting surface of the probe is located outside the liquid container. Compared with the related art in which the emitting surface of the probe is arranged inside the liquid container, the steam amount in the area where the emitting surface of the probe is located above the top opening is less and the humidity is lower than that inside the liquid container. Therefore, condensation is not easily formed on the emitting surface of the probe, thereby effectively reducing or eliminating the adverse effect of condensation on the detection result of the ultrasonic level gauge. Moreover, the maintenance amount consumed by the maintenance personnel to clean the probe is also saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings forming a part of the specification depict embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.
[0023] Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:
[0024] Figure 1 is a schematic installation structure diagram of some embodiments of the liquid level ultrasonic detection device according to the present disclosure;
[0025] Figure 2It is a three-dimensional schematic diagram of the installation structure according to some other embodiments of the liquid level ultrasonic detection device of the present disclosure.
[0026] It should be understood that the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. Detailed implementation manners
[0027] Now, various exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.
[0028] The "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. Terms such as "including" or "comprising" mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0029] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.
[0030] All terms used in the present disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary such as should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as such here.
[0031] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the specification.
[0032] In some related technologies, to meet the requirement of liquid level detection in a liquid storage tank, an ultrasonic liquid level gauge is directly installed on the door cover at the top of the liquid storage tank.
[0033] It has been found through research that although the ultrasonic liquid level gauge is usually above the liquid surface, when the ambient temperature is high, the air in the liquid storage tank contains more water vapor, which will cause condensation on the probe of the ultrasonic liquid level gauge. To a certain extent, the condensation will affect the accuracy of the measurement results. Correspondingly, maintenance personnel need to clean it, increasing the maintenance workload of the maintenance personnel.
[0034] In view of this, the embodiments of the present disclosure provide a liquid level ultrasonic detection device, which can reduce the adverse effects of steam on the liquid level detection by the ultrasonic liquid level gauge.
[0035] Figure 1 It is a schematic installation structure diagram according to some embodiments of the liquid level ultrasonic detection device of the present disclosure. Refer to Figure 1 , the embodiments of the present disclosure provide a liquid level ultrasonic detection device for realizing the detection of the liquid level in a liquid container 10. The liquid level ultrasonic detection device includes: a mounting frame 20 and an ultrasonic liquid level gauge 30. The mounting frame 20 is used to mount the ultrasonic liquid level gauge 30 so that the ultrasonic liquid level gauge 30 is in a position suitable for measuring the liquid level in the liquid container 10. The ultrasonic liquid level gauge 30 has a probe 31 and is mounted on the mounting frame 20. The ultrasonic liquid level gauge is a non-contact liquid level measuring instrument, which realizes liquid level measurement based on the propagation characteristics and reflection principle of ultrasonic waves in air or other media. For example, an ultrasonic transmitter emits ultrasonic pulses with a predetermined frequency to the measured liquid surface, and a receiver receives the reflected wave after the ultrasonic pulses encounter the liquid surface. The distance from the liquid level to the probe is determined according to the time difference between transmission and reception and the propagation speed of ultrasonic waves.
[0036] To reduce the adverse effects of steam on the liquid level detection by the ultrasonic liquid level gauge, the emitting surface 311 of the probe 31 is set at a position higher than the top opening 11 of the liquid container 10. In this way, through the mounting frame, the emitting surface of the probe of the ultrasonic liquid level gauge is set at a position higher than the top opening of the liquid container, so that the emitting surface of the probe is located outside the liquid container. Compared with the related technology where the emitting surface of the probe is set inside the liquid container, the amount of steam in the area where the emitting surface of the probe is located above the top opening is less and the humidity is lower than that inside the liquid container. Therefore, it is not easy to form condensation on the emitting surface of the probe, effectively reducing or eliminating the adverse effects of condensation on the detection results of the ultrasonic liquid level gauge. Moreover, it also saves the maintenance workload of the maintenance personnel for cleaning the probe.
[0037] After determining the distance from the liquid level to the probe, the operator can determine the liquid level value in the liquid container according to the dimensions of the liquid container, the mounting frame, and the ultrasonic liquid level gauge.
[0038] Reference Figure 1 In some embodiments, the bottom of the mounting bracket 20 is mounted on the top surface 12 of the liquid container 10. This can facilitate the positioning and fixing of the mounting bracket 20, and also make it easy to set the emitting surface 311 of the probe 31 at a position higher than the top opening 11 of the liquid container 10.
[0039] Figure 2 is a schematic three-dimensional view of the mounting structure according to other embodiments of the ultrasonic liquid level detection device of the present disclosure. Reference Figure 1 and Figure 2 In some embodiments, the mounting bracket 20 has a mounting portion 21 and a plurality of support legs 22. The mounting portion 21 is fixedly connected to the tops of the plurality of support legs 22 and is used to mount the ultrasonic liquid level gauge 30. At least one set of adjacent support legs 22 among the plurality of support legs 22 forms an air flow channel 23 above the top surface 12 of the liquid container 10.
[0040] The air flow channel 23 formed by the adjacent support legs enables the steam floating out from the top opening 11 to disperse under the action of the nearby air flow, so that it is not easy to form condensation on the emitting surface 311 of the probe 31.
[0041] Reference Figure 2 In some embodiments, the mounting bracket 20 has a rectangular mounting portion 21 and four support legs 22. The four corners of the rectangular mounting portion 21 are respectively fixedly connected to the tops of the four support legs 22, and the four support legs 22 form two sets of mutually perpendicular and intersecting air flow channels 23.
[0042] The four support legs 22 connecting the four corners of the rectangular mounting portion 21 can form a very stable supporting effect, making it easy for the ultrasonic liquid level gauge 30 to remain stable during the detection process. Moreover, the four support legs 22 can form two sets of mutually perpendicular and intersecting air flow channels 23, so that there is sufficient air flow outside the top opening 11, making it even less likely for steam to form condensation on the emitting surface 311 of the probe 31.
[0043] In Figure 2 , the ultrasonic liquid level detection device may further include a blower 40. The blower 40 is disposed on the side of the liquid container 10 and is configured to generate a dry air flow flowing into the air flow channel 23. The blower 40 can be disposed in a direct blowing or non-direct blowing position, as long as the formed dry air flow can directly or indirectly flow into the air flow channel 23. When applied in a workshop, the blower in the workshop can be used to provide the air flow to further reduce the possibility of forming condensation on the emitting surface 311 of the probe 31.
[0044] For the ultrasonic level gauge 30, it has a certain measurement range. To ensure the detection accuracy, refer to Figure 1 , in some embodiments, the emitting surface 311 of the probe 31 is higher than the top opening 10 - 70 cm of the liquid container 10, that is, the height H from the emitting surface 311 to the top opening 11 of the liquid container 10 ranges from 10 - 70 cm.
[0045] When the height H is too small, the emitting surface 311 is adjacent to the top opening 11, increasing the risk of condensation on the emitting surface 311 under the action of steam; when the height H is too large, the emitting surface 311 is too far from the liquid surface, resulting in exceeding the allowable measurement range and making it difficult to obtain an accurate measurement value. Therefore, setting the height H to range from 10 - 70 cm can balance the effects of accurate measurement and reduced condensation risk.
[0046] Preferably, the emitting surface 311 of the probe 31 is higher than the top opening 40 - 60 cm of the liquid container 10, that is, the height H from the emitting surface 311 to the top opening 11 of the liquid container 10 ranges from 40 - 60 cm. This preferred range can further reduce the condensation risk while meeting the requirements of accurate measurement.
[0047] In the liquid level ultrasonic detection device, ultrasonic level gauges 30 with different specifications and measurement ranges can be selected. Correspondingly, in some embodiments, the ultrasonic level gauge 30 is vertically adjustable on the mounting bracket 20 to meet the detection accuracy requirements of ultrasonic level gauges 30 with different specifications and measurement ranges. The height position of the ultrasonic level gauge 30 relative to the top opening 11 can also be adjusted according to the condensation situation of the emitting surface 311 of the probe.
[0048] Refer to Figure 1 , in some embodiments, the liquid level ultrasonic detection device further includes a height adjustment mechanism 50. The height adjustment mechanism 50 is provided on the mounting bracket 20 and is connected to the ultrasonic level gauge 30. The height adjustment mechanism 50 can adopt various structural forms, such as an adjustment structure that drives the rotation of a gear provided on the mounting bracket by a motor to drive a rack connected to the ultrasonic level gauge to move vertically, or an adjustment structure that drives the ultrasonic level gauge to move vertically by the telescopic movement of a piston rod of a piston cylinder with a cylinder barrel mounted on the mounting bracket, etc.
[0049] Considering that the emitting surface 311 of the probe 31 has a certain detection angle, such as 5° - 15°, etc., to reduce or eliminate the influence of structures outside the liquid surface on the detection result, refer to Figure 1 , in some embodiments, the orthographic projection of the emitting surface 311 of the probe 31 on the top surface 12 of the liquid container 10 is located within the top opening 11 of the liquid container 10, and the orthographic projection area is smaller than the cross-sectional area of the top opening 11.
[0050] In Figure 1 Figure 1 , the detection angle of the emission surface 311 is shown by a dotted line. At this detection angle, the ultrasonic waves emitted by the emission surface 311 can sufficiently reach the liquid level in the liquid container 10, and it is not easy to act on the top surface of the liquid container 10, such as the edge portion of the top opening 11, to reduce or eliminate the interference of this part on the detection result.
[0051] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0052] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims
1. A liquid level ultrasonic detection device, used to detect the liquid level in a liquid container (10), characterized in that: include: Mounting frame (20); and An ultrasonic liquid level meter (30) having a probe (31) and mounted on the mounting frame (20); a blower (40) disposed on the side of the liquid container (10); The emitting surface (311) of the probe (31) is arranged at a position higher than the top opening (11) of the liquid container (10); the mounting frame (20) has a plurality of supporting legs (22), and an air flow channel (23) located on the upper side of the top surface (12) of the liquid container (10) is formed between at least one group of adjacent supporting legs (22) among the plurality of supporting legs (22); the blower (40) is configured to generate a dry air flow that flows into the air flow channel (23).
2. The liquid level ultrasonic detection device according to claim 1, characterized in that: The bottom of the mounting frame (20) is mounted on the top surface (12) of the liquid container (10).
3. The liquid level ultrasonic detection device according to claim 1, characterized in that: The mounting frame (20) further comprises a mounting portion (21), wherein the mounting portion (21) is fixedly connected to the top ends of the plurality of supporting legs (22) and is used for mounting the ultrasonic liquid level meter (30).
4. The liquid level ultrasonic detection device according to claim 3, characterized in that: The mounting frame (20) comprises a rectangular mounting portion (21) and four supporting legs (22); the four corners of the rectangular mounting portion (21) are respectively fixedly connected to the top ends of the four supporting legs (22); the four supporting legs (22) form two groups of mutually perpendicular intersecting airflow channels (23).
5. The liquid level ultrasonic detection device according to any one of claims 1 to 4, characterized in that: The emitting surface (311) of the probe (31) is 10-70 cm higher than the top opening (11) of the liquid container (10).
6. The liquid level ultrasonic detection device according to claim 5, characterized in that: The emitting surface (311) of the probe (31) is 40-60 cm higher than the top opening (11) of the liquid container (10).
7. The liquid level ultrasonic detection device according to any one of claims 1 to 4, characterized in that: The height of the ultrasonic liquid level meter (30) on the mounting frame (20) is adjustable in the vertical direction.
8. The liquid level ultrasonic detection device according to claim 7, characterized in that: Also includes: A height adjustment mechanism (50) is arranged on the mounting frame (20) and is connected to the ultrasonic liquid level meter (30).
9. The liquid level ultrasonic detection device according to any one of claims 1 to 4, characterized in that: The orthographic projection of the emitting surface (311) of the probe (31) on the top surface (12) of the liquid container (10) is located within the top opening (11) of the liquid container (10), and the orthographic projection area is smaller than the cross-sectional area of the top opening (11).