A liquid level sensor aging test device

Abstract

The utility model relates to a kind of liquid level sensor aging test device, and liquid level sensor aging test device includes shell, baffle is equipped in shell and forms two water tanks in up-down direction, defined as upper water tank, lower water tank, the side of upper water tank is equipped with buffer chamber, the bottom of buffer chamber is equipped with the water hole that is communicated with upper water tank, the upper portion of buffer chamber is equipped with inlet pipe, the bottom of buffer chamber is equipped with drain pipe, drain pipe is used to drain to lower water tank;The upper portion of shell is equipped with open mouth, and open mouth is supported with an installation plate, and the installation plate is equipped with several plug-in holes, for installing the liquid level sensor to be measured. By ingeniously designed and cooperated with the buffer chamber of upper water tank and lower water tank, the water surface of upper water tank is relatively stable.

Description

Technical Field

[0001] This utility model relates to the field of liquid level sensor testing technology, and specifically to a liquid level sensor aging test device. Background Technology

[0002] LNG is unique due to its extremely low temperature (-162℃), flammable and explosive nature, and the fact that storage tanks are often used for trade settlements, requiring high long-term stability. Capacitive sensors rely on the dielectric stability of the insulating material, which may fail under extreme temperature differences and long-term stress. Aging tests accelerate the simulation and expose these potential failures in advance. For example, an aging test device for a liquid level sensor disclosed in patent announcement number CN216309172U uses two water tanks and a pump-water pipeline to achieve cyclical changes in the liquid level in the tanks. During use, the water is directly discharged into the tanks during water supply, causing some fluctuations in the water level, which affects the sensor's measurement results. Utility Model Content

[0003] The purpose of this invention is to provide an aging test device for a liquid level sensor to solve the aforementioned problems in the matching of pump water pipelines and water tanks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A liquid level sensor aging test device includes a housing, within which a partition forms two water tanks in a vertical direction, defined as an upper water tank and a lower water tank. A buffer chamber is provided on one side of the upper water tank, with a water passage hole at the bottom of the buffer chamber communicating with the upper water tank. A water inlet pipe is provided at the top of the buffer chamber, and a drain pipe is provided at the bottom of the buffer chamber for draining water into the lower water tank. An opening is provided at the top of the housing, and a mounting plate is supported on the opening. The mounting plate has several insertion holes for installing the liquid level sensor to be tested.

[0005] Furthermore, the buffer chamber includes a left side plate and a right side plate. The left side plate is shared with the upper water tank, the water passage hole is located on the left side plate, and one end of the drain pipe is connected to the right side plate.

[0006] Furthermore, the water passage hole is provided in multiple locations.

[0007] Furthermore, a pipe installation chamber is provided on the right side of the buffer chamber, and a water pump is provided in the pipe installation chamber, with the water inlet pipe connected to the water pump.

[0008] Furthermore, the other end of the drain pipe is connected to the lower water tank, the drain pipe is located in the pipe installation chamber, and a solenoid valve is installed on the drain pipe.

[0009] Furthermore, casters are provided on the bottom side of the lower water tank.

[0010] Furthermore, the right side of the lower water tank is provided with a downward protruding wastewater discharge section, and the caster is located to the left of the wastewater discharge section.

[0011] Furthermore, a panel mounting port is provided on one side of the pipe installation chamber.

[0012] The beneficial effects of this utility model are: This invention features a buffer chamber on one side of the upper water tank. The bottom of the buffer chamber has a water passage hole communicating with the upper water tank, and the upper part of the buffer chamber has a water inlet pipe for replenishing water to the upper water tank. The bottom of the buffer chamber has a drain pipe for draining water into the lower water tank. When water is introduced, it first enters the buffer chamber and flows into the upper water tank through the water passage hole at the bottom. This reduces water surface fluctuations in the upper water tank, resulting in a more stable water level and more stable and accurate sensor measurements. Attached Figure Description

[0013] Figure 1 This is a perspective view of the aging test device for the liquid level sensor of this utility model; Figure 2 This is a three-dimensional view of the liquid level sensor aging test device of this utility model from another angle; Figure 3 This is a cross-sectional view of the aging test device for the liquid level sensor of this utility model; Figure 4 yes Figure 3 Partial view of point A in the middle; Figure 5 This is a schematic diagram of the buffer chamber; Figure 6 This is a cross-sectional view of the liquid level sensor aging test device of this utility model from another angle.

[0014] 1. Outer shell; 11. Panel mounting port; 2. Mounting plate; 21. Insertion hole; 3. Caster mounting base; 41. Upper water tank; 42. Lower water tank; 43. Partition plate; 44. Overflow chamber; 45. Overflow channel; 46. Wastewater outlet; 47. Profile; 48. Left side plate; 49. Water passage hole; 5. Pipe installation chamber; 51. Right side plate; 52. Water inlet pipe connection port; 53. Water supply pipe through-hole; 6. Buffer chamber. Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0015] Embodiments of this utility model: like Figures 1 to 6 As shown, the liquid level sensor aging test device includes a housing 1. The housing 1 has a partition 43 forming two water tanks in the vertical direction, defined as an upper water tank 41 and a lower water tank 42. A reinforcing profile 47, such as a rectangular tube, is provided on the lower side of the partition 43. The upper part of the housing 1 has an opening with a surrounding step for support, and a mounting plate 2 is supported on the opening. The mounting plate 2 has several insertion holes 21, allowing for the simultaneous installation of multiple liquid level sensors to be tested. The measuring section of the liquid level sensor is located in the upper water tank 41. The mounting plate 2 is movably supported on the step at the edge of the opening, making it convenient to remove and place. Furthermore, relying on its own weight, the mounting plate 2 will not move around after placement. In this embodiment, an LNG capacitive liquid level sensor is used; however, similar sensors can also be used for testing in other embodiments.

[0016] A buffer chamber 6 is provided on the right side of the upper water tank 41. The bottom of the buffer chamber 6 is provided with a water passage hole 49 that communicates with the upper water tank 41. A water inlet pipe is provided at the top of the buffer chamber 6. Figure 4 The image shows the inlet pipe connection 52. A drain pipe is provided at the bottom of the buffer chamber 6 for draining water into the lower water tank 42. The buffer chamber 6 includes a left side plate 48 and a right side plate 51. The left side plate 48 is shared with the upper water tank 41, and a water passage hole 49 is provided on the left side plate 48. One end of the drain pipe is connected to the right side plate 51.

[0017] Multiple water passage holes 49 are arranged in a row and are small holes. For example... Figure 5 As shown, when water enters, it first enters the buffer chamber 6 and flows into the upper water tank 41 through the water passage 49 at the bottom. Furthermore, the water passage 49 has a structure of multiple small holes, which can reduce the water surface fluctuation problem in the upper water tank 41. The water surface is relatively stable, and the sensor measurement data is more stable and accurate.

[0018] A pipe installation chamber 5 is located on the right side of the buffer chamber 6. A water pump (not shown) is installed in the pipe installation chamber 5. An inlet pipe is connected to the water pump, and an inlet solenoid valve is installed on the inlet pipe. The inlet pipe is also connected to the water pump's drain outlet, and the water pump's outlet is connected to a water supply pipe, which is connected to the lower water tank 42. Figure 4The diagram shows the water supply pipe inlet 53. A water pump draws water from the lower water tank 42 to the upper water tank 41, causing the water level to gradually rise. The other end of a drain pipe is connected to the lower water tank 42 and is located in the pipe installation chamber 5. A drain solenoid valve is installed on the drain pipe. When the water level in the upper water tank 41 reaches a set position (which can be defined as a high position), the water pump stops, the drain solenoid valve opens, and water from the upper water tank 41 drains into the lower water tank 42, causing the water level to gradually decrease. When the water level drops to a set low position, the drain solenoid valve closes. This continuous water circulation generates a data curve from the level sensor. The level sensor data is connected to a computer via a data cable. The specific data acquisition and display methods are existing technologies and are unrelated to the problem solved by the structural design in this application. The upper water tank 41 is equipped with a standard level sensor for data comparison, detecting the real-time water level, and also used in conjunction with the controller to control the high and low water levels in the upper water tank 41. The controller is connected to the water pump and the solenoid valve.

[0019] like Figure 6 As shown, an overflow chamber 44 is also provided on the left side of the upper water tank 41. It is made of a U-shaped plate and has an overflow channel 45 that runs through the upper and lower parts of the tank. It can connect the upper water tank 41 and the lower water tank 42. When the water level of the upper water tank 41 is higher than that of the overflow chamber 44, it can naturally overflow into the lower water tank 42.

[0020] The bottom of the lower water tank 42 is equipped with four casters, which can be equipped with brakes. These casters are existing technology and are not shown in the drawing; however, the caster mounting base 3 is shown in the figure. The casters allow for the movement of the entire device. During testing, the casters are locked to maintain stability. The lower side of the lower water tank 42 also has a reinforcing profile 47.

[0021] like Figure 2 As shown, the right side of the lower water tank 42 has a downward-protruding wastewater discharge section, and the caster is located to the left of the wastewater discharge section. The wastewater discharge section is also part of the lower water tank 42. One side of the wastewater discharge section has a wastewater discharge port 46, which is normally plugged with a plug. Existing threaded plugs can be used. The wastewater discharge port 46 is only used when the water tank is cleaned regularly to drain the water from the water tank.

[0022] A panel mounting port 11 is provided on one side of the pipe installation chamber 5 for installing a control panel. The control panel can be equipped with a switch to control the start and stop of the water pump, and a power socket is provided on one side of it. This part of the technology belongs to the prior art. In this embodiment, it is only for the purpose of illustrating that a panel mounting port 11 has been reserved.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid level sensor aging test device, characterized in that: The device includes an outer casing, within which a partition forms two water tanks in a vertical direction, defined as an upper water tank and a lower water tank. A buffer chamber is located on one side of the upper water tank, and a water passage hole communicating with the upper water tank is located at the bottom of the buffer chamber. A water inlet pipe is located at the top of the buffer chamber, and a drain pipe is located at the bottom of the buffer chamber for draining water into the lower water tank. An open opening is located at the top of the outer casing, and a mounting plate is supported on the open opening. The mounting plate has several insertion holes for installing the liquid level sensor to be measured.

2. The liquid level sensor aging test device according to claim 1, characterized in that: The buffer chamber includes a left side plate and a right side plate. The left side plate is shared with the upper water tank. The water passage hole is located on the left side plate, and one end of the drain pipe is connected to the right side plate.

3. The liquid level sensor aging test device according to claim 2, characterized in that: The water passage is provided in multiple locations.

4. The liquid level sensor aging test device according to claim 2, characterized in that: The buffer chamber has a pipe installation chamber on the right side, and a water pump is installed in the pipe installation chamber. The water inlet pipe is connected to the water pump.

5. The liquid level sensor aging test apparatus according to claim 4, characterized in that: The other end of the drain pipe is connected to the lower water tank. The drain pipe is located in the pipe installation chamber and is equipped with a solenoid valve.

6. The liquid level sensor aging test apparatus according to claim 1, characterized in that: The bottom of the water tank is equipped with casters.

7. The liquid level sensor aging test apparatus according to claim 6, characterized in that: The lower water tank has a downward-protruding wastewater discharge section on the right side, and the caster is located to the left of the wastewater discharge section.

8. The liquid level sensor aging test apparatus according to claim 4, characterized in that: A panel mounting port is provided on one side of the pipe installation chamber.

Images