Ultrasonic liquid level meter

Abstract

The utility model discloses an ultrasonic level gauge, which relates to the technical field of ultrasonic level gauges, and comprises a display seat, a connecting seat arranged below the display seat, a controller arranged below the connecting seat, a connecting cover arranged below the controller, an outer protective tube arranged inside the connecting cover, and an inner protective tube arranged inside the outer protective tube. A probe is arranged in the outer protective tube, the probe is connected with the interior of the outer protective tube in an inserted mode, limiting grooves are formed in the inner walls of the two sides of the outer protective tube, limiting rods are arranged on the end faces of the two sides of the top of the probe, the limiting rods are connected with the interiors of the limiting grooves in an inserted mode, and a detection head is installed in the bottom end of the probe. According to the scheme, the problem that in the prior art, in the ultrasonic pulse transmission process of an ultrasonic liquid level meter, a small-area area near an ultrasonic transducer cannot receive sound waves usually, a blind area is formed, and the use environment of the ultrasonic liquid level meter is limited is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic liquid level meter technical field, specifically is an ultrasonic liquid level meter. BACKGROUND

[0002] Ultrasonic liquid level meter is the digital liquid level instrument controlled by microprocessor, in the measurement ultrasonic pulse is sent by sensor, and the sound wave is received by the same sensor after being reflected by liquid surface, and the electric signal is converted through piezoelectric crystal, and the distance from sensor to the surface of measured liquid is calculated by the time between the emission and reception of sound wave, because the non-contact measurement is adopted, the measured medium is almost not limited, and it can be widely used in the measurement of various liquid and solid material height,

[0003] For example, the Chinese authorized patent (ultrasonic liquid level meter) with the announcement number CN215491964U: including shell and liquid level probe, the liquid level probe includes probe body and installation part and detection part arranged at both ends of the probe body, the end of the installation part away from the probe body is connected with the shell, the end of the detection part away from the probe body is provided with a slope, and the slope is inwardly recessed to form a plurality of flow guide grooves, the plurality of flow guide grooves are arranged at intervals, when the ultrasonic liquid level meter is measured, the included angle between the slope and the horizontal plane is 10 degrees to 30 degrees, the opening direction of the flow guide groove is perpendicular to the inclination direction of the slope, when the liquid level of the liquid with hot water vapor is measured, the ultrasonic liquid level meter is first placed vertically above the liquid, so that the slope of the liquid level probe is arranged at an included angle with the horizontal plane, the hot water vapor reaches the slope, and is drained by the flow guide groove due to gravity, so that the detection surface of the liquid level probe is not easy to condense steam, so that accurate measurement data can be obtained.

[0004] However, the ultrasonic liquid level meter in the prior art has the problem that the small area near the ultrasonic transducer usually cannot receive sound waves during ultrasonic pulse transmission, forming a blind area, which limits the use environment of the ultrasonic liquid level meter; therefore, the existing demand is not met, and for this purpose, an ultrasonic liquid level meter is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an ultrasonic liquid level meter to solve the problem of the ultrasonic liquid level meter in the prior art that the small area near the ultrasonic transducer usually cannot receive sound waves during ultrasonic pulse transmission, forming a blind area, which limits the use environment of the ultrasonic liquid level meter.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: an ultrasonic liquid level meter, including display seat, the lower portion of display seat is provided with connecting seat, the lower portion of connecting seat is provided with controller, the lower portion of controller is provided with connecting cover, the inside of connecting cover is provided with outer protective tube, the inside of outer protective tube is provided with probe, probe is connected with the inside of outer protective tube, the both sides inner wall of outer protective tube is provided with limit slot, the both sides end surface of probe top is provided with limit rod, limit rod is connected with the inside of limit slot, the inside of probe bottom is equipped with detection head.

[0007] Preferably, the display seat is provided with a protective cover, the protective cover is threadedly connected with the display seat, and an observation port is arranged on the upper surface of the protective cover.

[0008] Preferably, the front end surface of the connecting seat is provided with a connecting head, and the connecting head is provided with two.

[0009] Preferably, a sealing cover is arranged on the connecting head, the sealing cover is insertedly connected with the inside of the connecting head, and a fixing screw is arranged on the front end surface of the controller.

[0010] Preferably, a moving slot is arranged on the front end surface of the connecting cover, and a moving rod is arranged in the moving slot.

[0011] Preferably, a fixing plate is arranged on the both sides of the bottom of the connecting cover, a fixing hole is arranged around the surface of the fixing plate, and the fixing hole is provided with four.

[0012] Preferably, a threaded pipe is arranged on the bottom of the fixing plate, and a threaded connection slot is arranged on the surface of the threaded pipe.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1), the utility model discloses a probe is arranged in the inside of outer protective tube, and the limit rod of probe top both sides is connected with the limit slot on the both sides inner wall of outer protective tube, and when detecting, the length of the probe that can extend is between 0.35m to 0.5m, and the smooth inner wall can ensure that the ultrasonic wave propagation is not affected and can also reduce the blind area of detection, solve the problem that the small area area near ultrasonic transducer usually does not receive sound wave in the ultrasonic pulse transmission process of the ultrasonic liquid level meter in the prior art, form blind area, which limits the use environment of ultrasonic liquid level meter.

[0015] (2), by setting fixed plate on both sides of the connecting cover bottom, when installing liquid level meter, the threaded pipe at the bottom of the fixed plate is connected with the installed object by the thread on the surface of the threaded pipe, then screws are installed in the fixed holes around the fixed plate to reinforce, ensuring the stability of the installation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic diagram of the ultrasonic liquid level meter of the utility model;

[0017] Figure 2 It is an enlarged schematic diagram of the internal partial structure of the probe of the utility model;

[0018] Figure 3 It is an enlarged schematic diagram of the structure at A of the ultrasonic liquid level meter of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the bottom structure of the fixed plate of the utility model;

[0020] In the figure: 1, display seat; 2, protective cover; 3, observation port; 4, connecting seat; 5, controller; 6, connecting cover; 7, fixed plate; 8, outer protective tube; 9, probe; 10, moving groove; 11, moving rod; 12, detection head; 13, limiting groove; 14, limiting rod; 15, connecting head; 16, sealing cover; 17, fixed screw; 18, fixed hole; 19, threaded pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Please refer to Figures 1-4The utility model provides an embodiment: an ultrasonic liquid level meter, the lower portion of display seat 1 is provided with connecting seat 4, the lower portion of connecting seat 4 is provided with controller 5, the lower portion of controller 5 is provided with connecting cover 6, the inside of connecting cover 6 is provided with outer protective tube 8, the inside of outer protective tube 8 is provided with probe 9, probe 9 is connected with the inside insertion of outer protective tube 8, the both sides inner wall of outer protective tube 8 is provided with limit slot 13, the both sides end surface of probe 9 top is provided with limit rod 14, limit rod 14 is connected with the inside insertion of limit slot 13, the inside of probe 9 bottom end is installed with detection head 12, probe 9 is arranged in the inside of outer protective tube 8, the limit rod 14 of probe 9 top both sides is connected with the insertion of limit slot 13 on the both sides inner wall of outer protective tube 8, can be according to the demand of detection with the movement of moving rod 11 in the inside of moving groove 10, to determine the length of probe 9 in the bottom of outer protective tube 8 and extend, the length of extension is between 0.35m to 0.5m, the inner wall is smooth, to ensure that the propagation of ultrasonic wave is not affected while also reducing its detection blind area, solve the ultrasonic liquid level meter in the prior art in the ultrasonic pulse transmission process, the small area area near the ultrasonic transducer usually does not receive the sound wave, forms blind area, this limits the use environment problem of ultrasonic liquid level meter. Through the both sides of connecting cover 6 bottom are provided with fixed plate 7, when installing liquid level meter, the threaded tube 19 of fixed plate 7 bottom is connected with the object to be installed with the thread connection groove on its surface, then the screw is installed in the fixed hole 18 around fixed plate 7 and is reinforced, guarantee its installation stability, when detecting, the ultrasonic liquid level meter determines the liquid level height by measuring the time of ultrasonic wave propagation in liquid, the ultrasonic wave is emitted by the transducer, is received by the same sensor after reflecting through the liquid surface, the liquid level height is calculated by calculating the time difference of sound wave emission and reception and the propagation speed of sound wave.

[0023] Please refer to Figures 1-4 The protective cover 2 is screwed to the display seat 1, and the upper surface of the protective cover 2 is provided with an observation port 3.

[0024] Please refer to Figures 1-4 The front end surface of the connecting seat 4 is provided with a connecting head 15, and the connecting head 15 is provided with two.

[0025] Please refer to Figures 1-4 The connecting head 15 is provided with a sealing cover 16, and the sealing cover 16 is connected with the inside insertion of the connecting head 15.

[0026] Please refer to Figures 1-4 The front end surface of the connecting cover 6 is provided with a moving groove 10, the moving groove 10 is provided with a moving rod 11, the both sides of the bottom of the connecting cover 6 are provided with a fixed plate 7, the periphery of the surface of the fixed plate 7 is provided with a fixed hole 18, and the fixed hole 18 is provided with four.

[0027] Referring to Figures 1-4 The bottom of the fixing plate 7 is provided with a threaded pipe 19, and the surface of the threaded pipe 19 is provided with a threaded connection groove; when the liquid level meter is installed, the threaded pipe 19 at the bottom of the fixing plate 7 is screwed with the installed object through the threaded connection groove on the surface of the threaded pipe 19, and then a screw is installed in the fixing hole 18 around the fixing plate 7 to reinforce and ensure the stability of the installation; when detecting, the ultrasonic liquid level meter determines the liquid level height by measuring the time of ultrasonic wave propagation in the liquid; the ultrasonic wave is emitted by a transducer, reflected by the liquid surface, and received by the same sensor; the liquid level height is calculated by calculating the time difference between the emission and reception of the sound wave and the propagation speed of the sound wave.

[0028] It is apparent for a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. An ultrasonic liquid level meter comprising a display housing (1), characterized in that: The lower part of the display seat (1) is provided with a connecting seat (4), the lower part of the connecting seat (4) is provided with a controller (5), the lower part of the controller (5) is provided with a connecting cover (6), the inside of the connecting cover (6) is provided with an outer protective tube (8), the inside of the outer protective tube (8) is provided with a probe (9), the probe (9) is connected with the outer protective tube (8) inside plug, the both sides of the outer protective tube (8) inner wall are provided with a limiting slot (13), the both sides end surface of the probe (9) top are provided with a limiting rod (14), the limiting rod (14) is connected with the limiting slot (13) inside plug, the inside of the probe (9) bottom end is provided with a detection head (12).

2. An ultrasonic liquid level meter according to claim 1, characterized in that: The display seat (1) is provided with a protective cover (2), the protective cover (2) is connected with the display seat (1) screw, the upper surface of the protective cover (2) is provided with an observation port (3).

3. An ultrasonic liquid level meter according to claim 1, characterized in that: The front end surface of the connecting seat (4) is provided with a connecting head (15), the connecting head (15) is provided with two.

4. An ultrasonic liquid level meter according to claim 3, characterized in that: The connecting head (15) is provided with a sealing cover (16), the sealing cover (16) is connected with the connecting head (15) inside plug, the front end surface of the controller (5) is provided with a fixed screw (17).

5. An ultrasonic liquid level meter according to claim 1, characterized in that: The front end surface of the connecting cover (6) is provided with a moving slot (10), the inside of the moving slot (10) is provided with a moving rod (11).

6. An ultrasonic liquid level meter according to claim 1, characterized in that: The both sides of the connecting cover (6) bottom are provided with a fixed plate (7), the surface of the fixed plate (7) is provided with a fixed hole (18), the fixed hole (18) is provided with four.

7. An ultrasonic liquid level meter according to claim 6, characterized in that: The bottom of the fixed plate (7) is provided with a threaded tube (19), the surface of the threaded tube (19) is provided with a threaded connection slot.

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