A liquid level sensor efficient testing device

Abstract

The utility model discloses a kind of liquid level sensor high-efficiency test equipment, it is related to liquid level sensor technical field, including reciprocating movement structure and water tank structure in its one side. The reciprocating movement structure includes servo motor, ball screw driven by servo motor, ball nut with ball screw constitutes screw pair, moving platform driven by ball nut, and slider and sliding slot for guiding. Moving platform is connected with the flange ring for installing sensor by support arm, connecting arm. The water tank structure is divided into multiple independent detection chambers by multiple partitions, each detection chamber bottom is equipped with blowdown valve, and front is equipped with observation window with scale line. The utility model is positioned by multi-chamber static water level design and sensor automatic displacement, realizes the quick, continuous, high-precision batch test of liquid level sensor at different liquid level points, effectively solve the problem of low efficiency, easily disturbed by water surface fluctuation of existing single water tank dynamic water injection and drainage test mode.

Description

Technical Field

[0001] This utility model relates to the field of liquid level sensor technology, specifically to a high-efficiency testing device for liquid level sensors. Background Technology

[0002] Radar level sensors, as a non-contact measuring device, are widely used in level detection and control in industries such as petroleum, chemical, water conservancy, and environmental protection due to their advantages such as high measurement accuracy, strong adaptability, and insensitivity to media properties. This type of sensor primarily transmits and receives high-frequency electromagnetic wave signals through an antenna, accurately calculating the liquid level height based on signal propagation time or phase changes.

[0003] In existing technologies, the factory calibration or periodic sampling inspection of radar level sensors typically employs a single-point static testing method. This involves fixing the sensor's flange to an external support frame, placing a single water tank directly below it, and simulating different liquid levels by adding or removing water to the tank to verify the sensor's measurement accuracy and stability. However, this method has significant limitations: First, each change in the test water level requires adding or removing water, a cumbersome and time-consuming process that severely restricts testing efficiency. Second, the addition or removal of water inevitably causes surface fluctuations, making it difficult for the liquid level to quickly return to a stable state. This not only prolongs the waiting time for each test but also interferes with the sensor's measurement accuracy, affecting the reliability of the test results. Therefore, existing testing methods are insufficient to meet the demands of large-scale, high-efficiency, and high-precision production inspection.

[0004] Therefore, we propose a high-efficiency testing device for liquid level sensors. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a high-efficiency testing device for liquid level sensors. By presetting multiple gradient static water levels and combining them with automatic sensor displacement, it achieves efficient, batch, and high-precision testing of liquid level sensors, effectively solving the problems in the background technology.

[0006] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-efficiency testing device for a liquid level sensor, comprising a reciprocating moving structure, wherein a water tank structure is provided on one side of the reciprocating moving structure; the reciprocating moving structure includes a first fixed support column, a second fixed support column, a servo motor, a connecting plate, a slide groove, a drag chain groove, a moving stage, a ball screw, a flange ring, a support arm, a connecting arm, a ball nut, and a slider; the water tank structure includes a tank body, the interior of which is divided into multiple independent detection chambers by multiple partitions arranged at equal intervals; the front of the tank body is provided with an observation window corresponding to each detection chamber, and the observation window is provided with scale lines; a drain valve is provided at the bottom of each detection chamber.

[0007] Preferably, the connecting plate is fixed to the upper part between the first fixed support and the second fixed support, the sliding groove is formed on the upper outer surface of the connecting plate, the ball screw is located on the upper part of the connecting plate, and the cable chain groove is fixed between the upper part of the rear outer surfaces of the first fixed support and the second fixed support.

[0008] Preferably, the servo motor is fixed to the upper part of the outer wall of the first fixed support, a coupling is provided between the ball screw and the servo motor, one end of the outer surface of the ball screw is fixedly connected to one end of the outer surface of the output shaft of the servo motor through the coupling, and bearings are provided between the ball screw and the first fixed support and the second fixed support, and the ball screw is rotatably connected to the first fixed support and the second fixed support through the bearings.

[0009] Preferably, the ball nut is fixed at the middle of the outer surface of one end of the moving platform, and the ball nut extends through to the middle of the outer surface of the other end of the moving platform; the ball nut is sleeved on the outer periphery of the ball screw through its internal ball circulation channel, and forms a ball screw pair with the ball screw.

[0010] Preferably, the support arm is fixed to the front outer surface of the moving platform, the flange ring is located at the upper part of the housing, the connecting arm is fixed to the rear outer surface of the flange ring, and the connecting arm and the support arm are connected by bolts.

[0011] Preferably, the slider is fixed to the lower outer surface of the moving platform, and the slider and the slide groove are slidably connected.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a high-efficiency testing device for liquid level sensors, which has the following beneficial effects: 1. This high-efficiency liquid level sensor testing device, through the setting of a water tank structure with multiple independent detection chambers, can pre-set different and stable water levels in each detection chamber to construct a multi-gradient static liquid level testing environment; during continuous testing, there is no need to repeatedly fill or drain water for each test point. The sensor can quickly and sequentially detect different liquid levels through the reciprocating moving structure, shortening the single test cycle and realizing efficient and batch testing of liquid level sensors.

[0013] 2. This high-efficiency testing equipment for liquid level sensors completely avoids interference from water surface fluctuations caused by on-site water injection and drainage on the radar liquid level sensor measurement signal because the water level in each detection chamber is a pre-set and static water level. This ensures that the sensor faces a stable and calm liquid surface during each measurement, thereby effectively guaranteeing the accuracy and reliability of the test data. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency testing device for liquid level sensors according to this utility model.

[0015] Figure 2 This is a schematic diagram of the reciprocating moving structure in a high-efficiency liquid level sensor testing device of this utility model.

[0016] Figure 3 This is a partial structural diagram of the reciprocating moving structure in a high-efficiency liquid level sensor testing device of this utility model.

[0017] Figure 4 This is a schematic diagram of the water tank structure in a high-efficiency liquid level sensor testing device of this utility model.

[0018] In the diagram: 1. Reciprocating moving structure; 2. Water tank structure; 3. First fixed support column; 4. Second fixed support column; 5. Servo motor; 6. Connecting plate; 7. Slide groove; 8. Cable chain groove; 9. Moving stage; 10. Ball screw; 11. Flange ring; 12. Support arm; 13. Connecting arm; 14. Ball nut; 15. Slider; 16. Box body; 17. Partition plate; 18. Detection chamber; 19. Observation window; 20. Scale line; 21. Drain valve. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-4As shown, this utility model provides a high-efficiency testing device for liquid level sensors, including a reciprocating moving structure 1 and a water tank structure 2. The reciprocating moving structure 1 is located on one side of the water tank structure 2 and is used to drive the liquid level sensor to be precisely positioned sequentially above multiple detection chambers 18.

[0021] The reciprocating moving structure 1 includes a first fixed support column 3, a second fixed support column 4, a servo motor 5, a connecting plate 6, a slide groove 7, a cable chain groove 8, a moving table 9, a ball screw 10, a flange ring 11, a support arm 12, a connecting arm 13, a ball nut 14, and a slider 15. The first fixed support column 3 and the second fixed support column 4 stand parallel and stably on the base. The connecting plate 6 is fixedly installed on the upper part between the first fixed support column 3 and the second fixed support column 4, and its upper surface has a slide groove 7 along its length. The cable chain groove 8 is fixed between the upper part of the rear outer surface of the first fixed support column 3 and the second fixed support column 4, and is used to accommodate and protect flexible pipelines such as cables.

[0022] The servo motor 5 is fixed to the upper part of the outer wall of the first fixed support 3. The ball screw 10 is fixedly connected to the output shaft of the servo motor 5 through a coupling to realize power transmission. The two ends of the ball screw 10 are respectively rotatably connected to the first fixed support 3 and the second fixed support 4 through bearings to ensure smooth rotation.

[0023] The moving stage 9 is located above the connecting plate 6. A ball nut 14 is fixed to the middle of the outer surface of one end of the moving stage 9 and extends to the other end. The ball nut 14 is sleeved on the outer circumference of the ball screw 10 through its internal ball circulation channel, forming a high-precision ball screw pair with the ball screw 10. When the servo motor 5 drives the ball screw 10 to rotate, the ball nut 14 drives the moving stage 9 to perform linear reciprocating motion along the axial direction of the ball screw 10.

[0024] The slider 15 is fixed to the lower outer surface of the moving stage 9 and embedded in the groove 7 on the connecting plate 6, forming a sliding pair with the groove 7. This structure ensures the stability and linear accuracy of the moving stage 9 during movement and prevents it from deviating or twisting.

[0025] Support arm 12 is fixed to the front outer surface of the moving platform 9. Flange ring 11 is located above the water tank structure 2 and is used to mount the liquid level sensor to be measured (not shown in the figure). Connecting arm 13 is fixed to the rear outer surface of flange ring 11 and is detachably connected to support arm 12 by bolts. This connection method facilitates quick replacement of matching flange ring 11 according to different specifications of the liquid level sensor flange, enhancing the versatility of the equipment.

[0026] The water tank structure 2 includes a tank body 16. The interior of the tank body 16 is divided into multiple independent detection chambers 18 by multiple equally spaced parallel partitions 17. Each detection chamber 18 can be used to hold static water at different heights, thereby creating a multi-gradient static liquid level testing environment.

[0027] The front of the housing 16 is equipped with observation windows 19 corresponding to each testing chamber 18. The observation windows 19 are made of transparent materials (such as glass or high-strength plastic) to allow operators to visually observe the water level within the chamber. The observation windows 19 are equipped with scale lines 20 for auxiliary observation and rough calibration of the water level. Each testing chamber 18 has a drain valve 21 at its bottom for draining liquid from the chamber after testing or when water needs to be changed.

[0028] The working process of this utility model is as follows: 1. Preparation: According to the test requirements, inject water to different heights into each detection chamber 18 of the water tank structure 2 to form a series of gradient water levels. After the liquid level in all chambers is completely still, install and fix the radar level sensor to be tested onto the flange ring 11 of the reciprocating moving structure 1 using bolts through its own flange, and connect the signal line and power line. The wiring can be neatly arranged in the cable chain groove 8.

[0029] 2. Start Testing: Start the equipment. The control system drives the servo motor 5 to operate. The servo motor 5, through the cooperation of the ball screw 10 and the ball nut 14, drives the moving stage 9 and its supporting arm 12, flange ring 11, and liquid level sensor to move together. The slider 15 slides within the slide groove 7 to ensure smooth movement.

[0030] 3. Positioning and Measurement: After precisely moving the liquid level sensor to directly above the first detection chamber 18 to be measured, the servo motor 5 stops running, bringing the sensor to a standstill. Once the sensor has stabilized, the liquid level is measured and the data is recorded.

[0031] 4. Continuous testing: After completing the measurement of one detection point, the control system restarts the servo motor 5 to move the sensor directly above the next target detection chamber 18, and repeats the steps of stationary measurement.

[0032] 5. End of work: After all preset water level tests are completed, move the sensor back to its initial position. Discharge wastewater through the drain valve 21 at the bottom of each detection chamber 18. If different sensor specifications need to be tested, loosen the bolts between the connecting arm 13 and the support arm 12 and replace the corresponding flange ring 11.

[0033] Through the above methods, this utility model realizes rapid, continuous, and automated testing of liquid level sensors under different static water levels, significantly improving testing efficiency and avoiding interference from dynamic water levels on measurement accuracy.

[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-efficiency testing device for liquid level sensors, comprising a reciprocating moving structure (1), characterized in that: A water tank structure (2) is provided on one side of the reciprocating moving structure (1); the reciprocating moving structure (1) includes a first fixed support (3), a second fixed support (4), a servo motor (5), a connecting plate (6), a slide (7), a drag chain groove (8), a moving table (9), a ball screw (10), a flange ring (11), a support arm (12), a connecting arm (13), a ball nut (14), and a slider (15); the water tank structure (2) includes a box body (16), the inside of the box body (16) is divided into multiple independent detection chambers (18) by multiple partitions (17) arranged at equal intervals; the front of the box body (16) is provided with an observation window (19) corresponding to each detection chamber (18), and a scale line (20) is provided on the observation window (19); a drain valve (21) is provided at the bottom of each detection chamber (18).

2. The high-efficiency testing device for liquid level sensors according to claim 1, characterized in that: The connecting plate (6) is fixed on the upper part between the first fixed support (3) and the second fixed support (4). The slide groove (7) is opened on the upper outer surface of the connecting plate (6). The ball screw (10) is located on the upper part of the connecting plate (6). The drag chain groove (8) is fixed between the upper part of the rear outer surface of the first fixed support (3) and the second fixed support (4).

3. The high-efficiency testing device for liquid level sensors according to claim 2, characterized in that: The servo motor (5) is fixed on the upper part of the outer wall of the first fixed support (3). A coupling is provided between the ball screw (10) and the servo motor (5). The outer surface of one end of the ball screw (10) is fixedly connected to the outer surface of one end of the output shaft of the servo motor (5) through the coupling. Bearings are provided between the ball screw (10) and the first fixed support (3) and the second fixed support (4). The ball screw (10) is rotatably connected to the first fixed support (3) and the second fixed support (4) through the bearings.

4. The high-efficiency testing device for liquid level sensors according to claim 3, characterized in that: The ball nut (14) is fixed at the middle of the outer surface of one end of the moving platform (9), and the ball nut (14) extends through to the middle of the outer surface of the other end of the moving platform (9); the ball nut (14) is sleeved on the outer periphery of the ball screw (10) through its internal ball circulation channel, and together with the ball screw (10) forms a ball screw pair.

5. The high-efficiency testing device for liquid level sensors according to claim 4, characterized in that: The support arm (12) is fixed on the front outer surface of the moving platform (9), the flange ring (11) is located on the upper part of the box (16), the connecting arm (13) is fixed on the rear outer surface of the flange ring (11), and the connecting arm (13) and the support arm (12) are connected by bolts.

6. The high-efficiency testing device for liquid level sensors according to claim 5, characterized in that: The slider (15) is fixed on the lower outer surface of the moving platform (9), and the slider (15) and the slide groove (7) are slidably connected.

Images