Ultrasonic liquid level meter with protection effect

Abstract

This invention relates to an ultrasonic level gauge with protective properties, belonging to the field of level detection technology. It includes: an integrated ultrasonic probe; a detection unit connected to the opening of the mud tank's cover, the detection unit being connected to the integrated ultrasonic probe; and an auxiliary detection unit connected to the inner wall of the mud tank, the auxiliary detection unit comprising: a positioning plate connected to the tank body; an inner guide plate connected to the positioning plate; and an outer guide plate connected to the inner guide plate. The inner and outer guide plates, facing the direction of mixing of the formulated mud in the mud tank, form a gradually narrowing flow-limiting channel. A detection area is provided between the inner and outer guide plates, the width of which is greater than the minimum end of the flow-limiting channel. A drainage channel is provided at the end of the detection area away from the flow-limiting channel. This invention solves the technical problem in existing technologies where it is difficult to simultaneously operate multiple precise measuring devices at construction sites.

Description

Technical Field

[0001] This invention belongs to the field of liquid level detection technology, and specifically relates to an ultrasonic liquid level gauge with protective effect. Background Technology

[0002] During drilling operations, it is necessary to inject formulated mud into the borehole to remove rock cuttings and sand particles broken by the drill bit, which are carried from the bottom of the well to the surface for separation. The formulated mud needs to be mixed in a mud tank at the construction site and then injected in a measured quantity. In addition to using a flow meter installed in the pipeline, a level gauge is also installed in the mud tank for verification during the quantitative injection. The amount of base material and auxiliary materials added to the mud tank in the early stage is also measured. Therefore, how to ensure the accuracy of the level measurement in the mud tank is a problem that needs to be solved by those skilled in the art.

[0003] Existing application number 202511549116.5 discloses a precise measurement and early warning system and method for the liquid level height in a mud tank, including a measuring bracket and a control unit containing a main processor. The control unit is also connected to multiple sets of liquid level detection components, a temperature compensation module, a stirring component, an early warning device, a data storage unit, and a calibration component. The multiple sets of liquid level detection components include laser and ultrasonic rangefinders. After receiving the detection signals, the main processor combines temperature compensation to correct the liquid level height.

[0004] The existing technology has the following problems:

[0005] Using multiple sensors to verify the data of ultrasonic rangefinders (ultrasonic level gauges) places high demands on the installation and working environment of the sensors, and it is difficult to meet the requirement of multiple precise measuring devices working normally at the same time on the construction site. Summary of the Invention

[0006] This invention provides an ultrasonic level gauge with protective effect, which can solve the technical problem in the prior art that it is difficult to ensure that multiple accurate measuring devices can work normally at the same time on the construction site.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] This application provides a protective ultrasonic level gauge, including an integrated ultrasonic probe, and further comprising:

[0009] A detection unit is connected to the opening of the lid of the mud tank, and the detection unit is connected to the integrated ultrasonic probe;

[0010] An auxiliary detection unit is connected to the inner wall of the mud tank, and the auxiliary detection unit has:

[0011] Positioning plate, connected to the barrel body;

[0012] An inner guide vane is connected to the positioning plate;

[0013] An outer guide plate is connected to the inner guide plate. The inner and outer guide plates form a gradually narrowing flow-limiting channel at the ends facing the mixing direction of the formulated mud in the mud tank. A detection area is provided between the inner and outer guide plates. The width of the detection area is greater than the minimum end of the flow-limiting channel. A drainage channel is provided at the end of the detection area away from the flow-limiting channel.

[0014] The above technical solution utilizes the principle of reducing the flow velocity in the wider detection zone through the flow-limiting channel formed by the inner and outer guide plates. This reduces the flow velocity in the detection zone, resulting in a more stable liquid surface during stirring for detection by the integrated ultrasonic probe. This improves the liquid level detection accuracy of a single measuring device and better meets the needs of use and maintenance at the construction site.

[0015] In this invention, the detection unit further includes:

[0016] An antifoaming net is arranged in a ring within the detection area.

[0017] By employing the above technical solution, defoaming mesh is used to cut away the large number of bubbles generated after the addition of chemical treatment agents and the air bubbles formed by stirring, thereby reducing the probability of bubbles entering the detection area and further improving the detection accuracy.

[0018] In this invention, the detection unit further includes:

[0019] An anti-deposition plate is disposed in the upper part of the flow-limiting channel. The anti-deposition plate is connected between the inner guide plate and the outer guide plate. The anti-deposition plate is inclined in a direction away from the detection area.

[0020] Through the above technical solution, the outwardly inclined anti-settling plate guides the upper formula mud downward to prevent the high-density raw materials from settling on the straight wall. At the same time, it can also prevent the air bubble layer from directly entering the detection area during the early stirring process, which greatly reduces the impact of air bubbles on liquid level detection during the early stirring process.

[0021] In this invention, the detection unit further includes:

[0022] A mesh plate is disposed within the drainage channel, and the mesh plate is connected between the inner guide plate and the outer guide plate.

[0023] By employing the above technical solutions, the probability of air bubbles being drawn back into the slurry during discharge is reduced, thereby improving the accuracy of liquid level detection during the injection of the slurry.

[0024] In this invention, the detection unit further includes:

[0025] A mounting plate is attached to the cover. The mounting plate is detachably connected to the integrated ultrasonic probe. The mounting plate has a waist-shaped hole.

[0026] The above technical solution, using an adjustable mounting plate, improves the installation adjustability of the integrated ultrasonic probe, making it easier for initial use and installation.

[0027] In this invention, the detection unit further includes:

[0028] The mounting base abuts against the cover and the mounting plate;

[0029] A cover plate abuts against the side of the mounting plate opposite to the mounting base, and the cover plate is connected to the cover body by screws;

[0030] The mounting base and the cover plate are made of damping aluminum-based composite material.

[0031] By employing the above technical solution, damping aluminum-based composite material is used to isolate the mounting plate and the cover, reducing the interference of vibration generated by stirring on the integrated ultrasonic probe and further improving the detection accuracy. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 An isometric view of an ultrasonic level gauge with protective effect installed in a mud tank, as provided in an embodiment of the present invention;

[0034] Figure 2 An isometric view of the auxiliary detection unit provided in an embodiment of the present invention;

[0035] Figure 3 A top view of the auxiliary detection unit provided in an embodiment of the present invention;

[0036] Figure 4 for Figure 3 A partial (middle) schematic diagram of the cross-sectional view at point AA;

[0037] Figure 5 An isometric view of the detection unit provided in an embodiment of the present invention;

[0038] Figure 6 A top view of the detection unit provided in an embodiment of the present invention;

[0039] Figure 7 for Figure 6 Sectional view at point BB.

[0040] Icons: 1-Lid; 2-Bucket; 3-Auxiliary detection unit; 301-Positioning plate; 302-Outer guide plate; 303-Inner guide plate; 304-Defoaming net; 305-Anti-settling plate; 306-Mesh plate; 307-Detection area; 4-Detection unit; 401-Integrated ultrasonic probe; 402-Mounting plate; 4021-Oval hole; 403-Mounting base; 404-Lid plate; 405-Screw. Detailed Implementation

[0041] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0042] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0043] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] Example:

[0046] Please refer to Figures 1 to 7 , Figures 1 to 7 The image shown is an embodiment of this application.

[0047] This embodiment provides an ultrasonic level gauge with protective effects, such as... Figure 1 and Figure 5 As shown, it includes an integrated ultrasonic probe 401, wherein those skilled in the art can adapt the integrated ultrasonic probe 401 to commercially available finished products and mounting plate 402 for compatibility connection. It also includes:

[0048] The detection unit 4 is connected to the opening of the cover 1 of the mud tank, and the detection unit 4 is connected to the integrated ultrasonic probe 401.

[0049] Auxiliary detection unit 3 is connected to the inner wall of the mud tank body 2, such as... Figure 2 and Figure 3 As shown, the auxiliary detection unit 3 has:

[0050] Positioning plate 301 is welded to barrel body 2, using the following method: Figure 3 The welding method shown is to connect the left side with full welding and the right side with spot welding to avoid detachment due to erosion by the formula mud. When replacing, use an air gouging gun to separate them.

[0051] The inner guide plate 303 is connected to the positioning plate 301;

[0052] like Figure 3 As shown, the outer guide plate 302 is connected to the inner guide plate 303. The inner guide plate 303 and the outer guide plate 302 form a gradually narrowing figure-eight flow-limiting channel at the end facing the stirring direction of the formula mud in the mud tank. A detection zone 307 is provided between the inner guide plate 303 and the outer guide plate 302. The detection zone 307 is circular and its width is greater than the minimum end of the flow-limiting channel. A drainage channel is provided at the end of the detection zone 307 away from the flow-limiting channel. The width of the drainage channel is equal to the minimum width of the flow-limiting channel. That is, after the formula mud or base liquid forms a rotating fluid under the action of the stirring shaft, it enters the wider detection zone 307 through the narrow opening of the flow-limiting channel and then decelerates significantly to keep the flow rate in the detection zone 307 low and the liquid surface relatively stable.

[0053] It should be noted that the bottom of the testing zone 307 is open. If heavy materials in the slurry settle after the flow rate slows down, they will return to the area covered by the mixing shaft and be remixed. Figure 1 As shown, the guide plate is only installed to the top of the lower slope and does not extend to the final discharge port. The formulated mud is not completely discharged after a single mixing, but a certain amount is reserved. If the reserve is insufficient in case of an accident, base liquid and raw materials can be added for mixing. Therefore, it is only necessary to detect the liquid level change of the straight wall part of the mud tank. Compared with the existing technology of using floats or other intermediates to measure the liquid level of the formulated mud, a more accurate liquid level position can be obtained based on the self-leveling of the liquid. This avoids the liquid level measurement error caused by the sinking of intermediates such as floats due to mud deposition, or the measurement deviation caused by the weight change of intermediates such as floats in open working conditions such as rainfall or cultivation environment.

[0054] Through the above technical solution, the flow velocity in the detection zone 307, which is wider, is reduced by using the flow-limiting channel formed by the inner and outer guide plates 302. This reduces the flow velocity in the detection zone 307, thereby obtaining a more stable liquid surface during the stirring process for detection by the integrated ultrasonic probe 401. This improves the liquid level detection accuracy of a single measuring device and better meets the needs of use and maintenance at the construction site.

[0055] In a preferred embodiment, the detection unit 4 further includes:

[0056] The defoaming net is made of 304 stainless steel and is placed in a ring within the testing area 307.

[0057] like Figure 4 As shown, the defoaming net 304 uses a honeycomb metal sidewall to obtain a large passage space with minimal resistance area, while effectively cutting air bubbles. When in use, it can be directly inserted or removed for replacement through interference fit, or a limit plate can be installed to prevent it from falling.

[0058] By employing the above technical solution, defoaming mesh 304 is used to cut the bubbles generated by the addition of chemical treatment agents and the air introduced by stirring, thereby reducing the probability of bubbles entering the detection area 307 and further improving the detection accuracy.

[0059] As a preferred implementation method, such as Figure 3 and Figure 4 As shown, the detection unit 4 further includes:

[0060] Anti-deposition plate 305 is set in the upper part of the flow restriction channel. Anti-deposition plate 305 is connected between inner guide plate 303 and outer guide plate 302. Anti-deposition plate 305 is inclined in the direction away from detection area 307.

[0061] The anti-settling plate 305 serves to connect the inner and outer guide plates and prevents air bubbles from the upper formulation mud and liquid surface from entering the detection zone 307. The formulation mud needs to enter the detection zone 307 from below the anti-settling plate 305 through the flow restriction channel and achieve internal and external liquid surface balance under atmospheric pressure.

[0062] Through the above technical solution, the outwardly inclined anti-settling plate 305 guides the upper formula mud downward to prevent the high specific gravity raw materials in it from depositing on the straight wall. At the same time, it can also prevent the bubble layer from directly entering the detection area 307 during the early stirring process, which greatly reduces the impact of bubbles on liquid level detection during the early stirring process.

[0063] In a preferred embodiment, the detection unit 4 further includes:

[0064] Mesh plate 306 is installed in the drainage channel and is connected between inner guide plate 303 and outer guide plate 302.

[0065] The mesh plate 306 also serves to connect the inner and outer guide plates. If the surface optimization of the outer guide plate 302 is poor, reinforcing ribs can be welded to the inner side of the anti-deposition plate 305 for reinforcement. It should be noted that because some components in the formula mud have a large specific gravity, they will inevitably cause erosion of the auxiliary detection unit 3 after stirring. Therefore, the staff needs to regularly check and replace the auxiliary detection unit 3 to ensure that it is used in good working condition.

[0066] The above technical solution reduces the probability of air bubbles being drawn in during the discharge of the formulated mud by using a 306 mesh plate, thereby improving the accuracy of liquid level detection during the injection of the formulated mud.

[0067] In a preferred embodiment, the detection unit 4 further includes:

[0068] Mounting plate 402 is connected to cover 1. Mounting plate 402 is detachably connected to integrated ultrasonic probe 401. Mounting plate 402 has a waist-shaped hole 4021.

[0069] The above technical solution, using an adjustable mounting plate 402, improves the installation adjustability of the integrated ultrasonic probe 401, making it easier for initial use and installation.

[0070] In a preferred embodiment, the detection unit 4 further includes:

[0071] Mounting base 403 abuts between cover 1 and mounting plate 402;

[0072] The cover plate 404 abuts against the side of the mounting plate 402 opposite to the mounting base 403, and the cover plate 404 is connected to the cover body 1 by screws 405;

[0073] Mounting base 403 and cover plate 404 are made of damping aluminum-based composite material.

[0074] By using the above technical solution, damping aluminum-based composite material is used to isolate the mounting plate 402 and the cover 1, reducing the interference of vibration generated by stirring on the integrated ultrasonic probe 401, and further improving the detection accuracy.

[0075] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ultrasonic level gauge with protective effect, comprising an integrated ultrasonic probe (401), characterized in that, Also includes: The detection unit (4) is connected to the opening of the cover (1) of the mud tank, and the detection unit (4) is connected to the integrated ultrasonic probe (401); An auxiliary detection unit (3) is connected to the inner wall of the mud tank body (2), and the auxiliary detection unit (3) has: Positioning plate (301) is connected to barrel body (2); The inner guide plate (303) is connected to the positioning plate (301); An outer guide plate (302) is connected to the inner guide plate (303). The inner guide plate (303) and the outer guide plate (302) form a gradually narrowing flow-limiting channel at the end facing the direction of stirring of the formula mud in the mud tank. A detection area (307) is provided between the inner guide plate (303) and the outer guide plate (302). The width of the detection area (307) is greater than the minimum end of the flow-limiting channel. A drainage channel is provided at the end of the detection area (307) away from the flow-limiting channel.

2. The ultrasonic level gauge with protective effect according to claim 1, characterized in that, The detection unit (4) further includes: An antifoaming net (304) is arranged in a ring within the detection area (307).

3. The ultrasonic level gauge with protective effect according to claim 2, characterized in that, The detection unit (4) further includes: An anti-deposition plate (305) is disposed in the upper part of the flow restriction channel. The anti-deposition plate (305) is connected between the inner guide plate (303) and the outer guide plate (302). The anti-deposition plate (305) is inclined in the direction away from the detection area (307).

4. The ultrasonic level gauge with protective effect according to claim 3, characterized in that, The detection unit (4) further includes: A mesh plate (306) is disposed in the drainage channel, and the mesh plate (306) is connected between the inner guide plate (303) and the outer guide plate (302).

5. The ultrasonic level gauge with protective effect according to claim 4, characterized in that, The detection unit (4) further includes: Mounting plate (402) is connected to cover (1). Mounting plate (402) is detachably connected to the integrated ultrasonic probe (401). Mounting plate (402) has a waist-shaped hole (4021).

6. The ultrasonic level gauge with protective effect according to claim 5, characterized in that, The detection unit (4) further includes: Mounting base (403) abuts between cover (1) and mounting plate (402); A cover plate (404) abuts against the side of the mounting plate (402) away from the mounting base (403), and the cover plate (404) is connected to the cover body (1) by screws (405). The mounting base (403) and the cover plate (404) are made of damping aluminum-based composite material.

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