Automatic liquid supplementing device
The weight of the alkali tank is detected through the PLC weighing sensor, combined with the automatic liquid replenishment device and the fixing frame, the problem of the drop in the alkali tank liquid level during the electrolytic water hydrogen production process is solved, and automated and accurate alkali replenishment is achieved, improving the sustainability and safety of the experiment.
Patent Information
- Application Number
- CN202422606580.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In the prior art, the drop in the alkali liquid tank during the electrolytic water hydrogen production process leads to continuous experiments, the manual liquid replenishment work intensity is high and inaccurate, and the liquid level sensor is susceptible to alkali erosion or misjudgment, and automatic and accurate liquid replenishment cannot be achieved.
The PLC weighing sensor is used to detect the weight of the alkali tank, and the control system is automatically replenished, combined with the liquid replenishment device and the fixing frame to avoid misjudgment of the sensor and realize automatic replenishment.
Reducing manual participation improves the accuracy and automation of lye replenishment, ensuring the sustainability of experiments, and reducing the risk of sensor damage and the possibility of artificial misoperation.
Smart Images
Figure CN223255468U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid level control, in particular to an automatic liquid replenishing device. Background Art
[0002] During the process of hydrogen production by electrolysis of water, the single-channel power module connected to the alkali liquid tank is normally maintained at a relatively high temperature, generally 80°C, and a single experiment lasts for a long time, generally 1-30 days. As the hydrogen production experiment progresses, the water in the alkali liquid tank continues to evaporate and the alkali liquid level drops, seriously affecting the continuation of the experiment.
[0003] The existing solutions are: the first is to replenish liquid by manually detecting abnormal liquid levels; the second is to install a liquid level sensor in the alkali liquid tank and connect it to the control system, which will automatically replenish water.
[0004] Artificial water replenishment is labor-intensive and requires real-time attention to whether replenishment is needed. Human negligence may lead to forgetting to replenish fluids, replenishing too much or too little fluids, which is not conducive to the progress of the experiment.
[0005] The use of liquid level sensors has the following problems:
[0006] 1. If the liquid level sensor is placed inside a lye tank, the high concentration of the lye will easily form crystals, causing the sensor to misjudge. In addition, common sensor surface materials will be corroded by lye, and customized sensors made of special materials are expensive.
[0007] 2. If the liquid level sensor is pasted on the surface of the alkali solution tank, the residual liquid inside the bottle will cause the sensor to misjudge when the alkali solution inside the bottle drops. The thickness of the bottle also has a great influence on the accuracy of the sensor.
[0008] Therefore, there is an urgent need for a device that can accurately measure and replenish fluids in a timely manner without excessive human involvement. Utility Model Content
[0009] In order to solve the deficiencies in the above-mentioned prior art, the utility model provides an automatic liquid replenishing device, including a liquid replenishing device, an alkali liquid tank, a liquid level detection device, a fixing frame and a control system, wherein the control system is electrically connected to the liquid replenishing device and the liquid level detection device; the liquid replenishing device and the liquid level detection device are arranged on the fixing frame, and the liquid replenishing device is connected to the alkali liquid tank pipeline; the liquid level detection device includes a PLC weighing sensor and a tray placed on top of the PLC weighing sensor, and the alkali liquid tank is placed in the tray for weighing.
[0010] Furthermore, the fluid replenishing device includes a fluid replenishing tank, a water replenishing pump and a silicone hose, and the fluid replenishing tank, the water replenishing pump and the alkali solution tank are connected by the silicone hose.
[0011] Furthermore, the fixing frame includes a bottom plate and side plates, and the bottom plate and the side plates are vertically connected.
[0012] Furthermore, the PLC weighing sensor is fixedly connected to the base plate by screws.
[0013] Furthermore, the screw is an M4 screw.
[0014] Furthermore, the liquid replenishment tank is placed on the surface of the bottom plate, and the water replenishment pump is fixed to the side plate.
[0015] Furthermore, the height of the water replenishment pump is higher than the height of the top of the liquid replenishment tank.
[0016] Furthermore, the liquid level detection device is also provided with a limit member, which is installed on the side of the tray. The limit member moves in a first direction to clamp the alkali liquid tank in the tray, and moves in a second direction to release the alkali liquid tank.
[0017] Furthermore, the limiting member is a rubber pad top screw.
[0018] Furthermore, a rotating handle is provided at one end of the rubber pad top screw away from the alkali solution tank, and a plurality of transverse ribs parallel to the axis of the rubber pad top screw are provided on the outer wall surface of the rotating handle.
[0019] Based on the above, compared with the existing technology, the utility model provides an automatic liquid replenishing device, in which the alkali liquid tank is connected to the liquid replenishing device, and a liquid level detection device is arranged at the bottom of the alkali liquid pipe. The liquid level detection device weighs the weight of the alkali liquid in the alkali liquid tank through a PLC weighing sensor, thereby judging whether there is more or less alkali liquid, avoiding the inaccuracy caused by the use of the liquid level sensor; in addition, the control system is electrically connected to the liquid level detection device and the liquid replenishing device. When the gravity information collected by the PLC weighing sensor meets the lower limit threshold of the alkali liquid weight, the control system will start the liquid replenishing device to replenish the alkali liquid tank, reducing manual participation to complete the supply of alkali liquid, and has good application value.
[0020] Other features and benefits of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other benefits of the present invention can be achieved and obtained through the structures specifically pointed out in the description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work. The positional relationships described in the drawings in the following description are based on the directions of the components shown in the diagrams, unless otherwise specified.
[0022] Figure 1 A schematic structural diagram of an automatic liquid replenishing device provided in one embodiment of the present utility model;
[0023] Figure 2 A schematic structural diagram of an alkali liquid tank and a liquid level detection device provided in one embodiment of the present utility model;
[0024] Figure 3 A front view of an automatic liquid replenishing device provided by an embodiment of the present utility model;
[0025] Figure 4 A schematic structural diagram of a liquid level detection device provided in one embodiment of the present utility model;
[0026] Figure 5 This is a structural schematic diagram of a rotary handle provided in one embodiment of the utility model.
[0027] Reference numerals:
[0028] 10. Fluid replenishing device; 11. Fluid replenishing tank; 12. Water replenishing pump; 13. Silicone hose; 20. Alkali liquid tank; 30. Liquid level detection device; 31. PLC weighing sensor; 32. Pallet; 33. Screw; 34. Limiting piece; 341. Rubber pad top screw; 342. Rotating handle; 343. Horizontal rib; 40. Fixing bracket; 41. Bottom plate; 42. Side plate. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0030] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and cannot be understood as limiting the present invention; it should be further understood that the terms used in the present invention should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined as such in the present invention.
[0031] The utility model provides an automatic liquid replenishing device, such as Figure 1 As shown, it includes a liquid replenishing device 10, an alkali liquid tank 20, a liquid level detection device 30, and a fixing bracket 40. The control system is electrically connected to the liquid replenishing device 10 and the liquid level detection device 30; the liquid replenishing device 10 and the liquid level detection device 30 are arranged on the fixing bracket 40, and the liquid replenishing device 10 is connected to the alkali liquid tank 20 through a pipeline.
[0032] In one embodiment, if Figure 2 As shown, the liquid level detection device 30 includes a PLC weighing sensor 31 and a tray 32 placed on top of the PLC weighing sensor 31. The alkali liquid tank 20 is placed in the tray 32 for weighing.
[0033] In one embodiment, if Figure 1 and Figure 3 As shown, the liquid replenishing device 10 includes a liquid replenishing tank 11 , a water replenishing pump 12 and a silicone hose 13 . The liquid replenishing tank 11 , the water replenishing pump 12 and the alkali solution tank 20 are connected via the silicone hose 13 .
[0034] When implementing it specifically, Figure 3 As shown, the PLC load cell 31 senses the changes in gravity applied by the alkali liquid tank 20 along direction A1. The upper and lower limits of the alkali liquid level in the alkali liquid tank 20 correspond to two thresholds. When the gravity reaches the lower threshold, it indicates that the alkali liquid level in the alkali liquid tank 20 is too low. The control system collects the signal from the PLC load cell 31 and sends a refill signal to the water replenishment device, activating the refill pump 12 to pump the alkali liquid from the refill tank 11 along direction A2. When the gravity reaches the upper threshold, the refill pump 12 stops replenishing the liquid.
[0035] It should be noted that the control system (not shown in the figure) is a conventional fluid infusion control system and will not be described in detail here.
[0036] In one embodiment, if Figure 1 As shown, the fixing frame 40 includes a bottom plate 41 and side plates 42, which are vertically connected. The bottom plate 41 and side plates 42 of the fixing frame 40 are both mounted with the liquid replenishing device 10 and the liquid level detection device 30. The fixing frame 40 combines the different devices together to ensure the integrity of the device.
[0037] In one embodiment, if Figure 4 As shown, the PLC weighing sensor 31 is fixedly connected to the base plate 41 by screws 33. Specifically, the fixing by screws 33 facilitates the fixing and removal of the PLC weighing sensor 31 and the base plate 41. Preferably, the model of the screws 33 is an M4 screw 33.
[0038] Preferably, the refill tank 11 is placed on the bottom plate 41, and the refill pump 12 is fixed to the side plate 42. Placing the refill tank 11 directly on the bottom plate 41 facilitates easy access, while the refill pump 12 is fixed to the side plate 42, facilitating experimental procedures. Preferably, the refill pump 12 is higher than the top of the refill tank 11 to reduce the electrical energy consumed by the refill pump 12. Furthermore, the refill pump 12's height above the refill tank 11 prevents the silicone hose 13 from bending, ensuring it remains intact during prolonged use.
[0039] In actual use, in order to match the flexibility of the size of the alkali liquid tank 20, there will be a gap between the alkali liquid tank 20 and the inside of the tray 32. In order to ensure the safety of the alkali liquid tank 20, the liquid level detection device 30 is also provided with a limit member 34, such as Figure 4 As shown, the limiting member 34 is installed on the side of the tray 32. The limiting member 34 moves in a first direction to clamp the alkali liquid tank 20 in the tray 32, and moves in a second direction to release the alkali liquid tank 20.
[0040] Specifically, the tray 32 has a perforation through which a retaining member 34 passes, with one end resting against the lye tank 20. When the tray 32 is rotated in a first direction, the lye tank 20 is secured within the tray 32, preventing it from being easily bumped and ensuring the safety of the lye tank 20 and the experimental environment. To remove the lye tank 20, the retaining member 34 is rotated in a second direction to release the lye tank 20. The first and second directions are indicated by A3 in the figure.
[0041] Preferably, if Figure 4 As shown, the limiting member 34 is a rubber pad top screw 341. Specifically, a rubber pad is provided on one side of the rubber pad top screw 341 close to the alkali liquid tank 20, which is pressed against the alkali liquid tank 20. The rubber pad can fit well with the alkali liquid tank 20 and will not slip.
[0042] like Figure 4 The end of the rubber pad top screw 341 away from the alkali liquid tank 20 is provided with a rotating handle 342. Figure 5 As shown, the outer wall of the rotating handle 342 is provided with a plurality of transverse ribs 343 parallel to the axis of the rubber pad top screw 341. Specifically, the rotating handle 342 is mounted on the end of the rubber pad top screw 341 away from the alkali liquid tank 20. The cross-sectional area of the rotating handle 342 is larger than that of the rubber pad top screw 341. The transverse ribs 343 can increase the friction of the finger contact portion during rotation, making it easier to rotate the rubber pad top screw 341 to tighten or loosen the alkali liquid tank 20.
[0043] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention may be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background art at the same time. Those skilled in the art should understand that the absence of any content in a claim should not be construed as a limitation on that claim.
[0044] Although this article uses more fluid replenishment devices, fluid replenishment tanks, water replenishment pumps, silicone hoses,
[0045] Terms such as alkali liquid tank, liquid level detection device, PLC weighing sensor, tray, screw, limiter, rubber pad screw, rotary handle, transverse rib, fixing frame, bottom plate and side plate are used, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An automatic fluid replenishing device, characterized in that: It includes a liquid replenishing device, an alkaline liquid tank, a liquid level detection device, a fixing frame and a control system, wherein the control system is electrically connected to the liquid replenishing device and the liquid level detection device; the liquid replenishing device and the liquid level detection device are arranged on the fixing frame, and the liquid replenishing device is connected to the alkaline liquid tank pipeline; The liquid level detection device includes a PLC weighing sensor and a tray placed on top of the PLC weighing sensor, and the alkali liquid tank is placed in the tray for weighing.
2. The automatic fluid replenishing device according to claim 1, characterized in that: The fluid replenishment device includes a fluid replenishment tank, a water replenishment pump, and a silicone hose. The fluid replenishment tank, the water replenishment pump, and the alkali solution tank are connected via the silicone hose.
3. The automatic fluid replenishing device according to claim 2, characterized in that: The fixing frame includes a bottom plate and side plates, and the bottom plate and the side plates are vertically connected.
4. The automatic fluid replenishing device according to claim 3, characterized in that: The PLC weighing sensor is fixedly connected to the base plate by screws.
5. The automatic fluid replenishing device according to claim 4, characterized in that: The screw is an M4 screw.
6. The automatic fluid replenishing device according to claim 3, characterized in that: The liquid replenishing tank is placed on the surface of the bottom plate, and the water replenishing pump is fixed to the side plate.
7. The automatic fluid replenishing device according to claim 6, characterized in that: The height of the water replenishment pump is higher than the height of the top of the liquid replenishment tank.
8. The automatic fluid replenishing device according to claim 1, characterized in that: The liquid level detection device is further provided with a limiting member, which is installed on the side of the tray. The limiting member moves in a first direction to clamp the alkali liquid tank in the tray, and moves in a second direction to release the alkali liquid tank.
9. The automatic fluid replenishing device according to claim 8, characterized in that: The limiting component is a rubber pad top screw.
10. The automatic fluid replenishing device according to claim 9, characterized in that: A rotating handle is provided at one end of the rubber pad top screw away from the alkali liquid tank, and a plurality of transverse ribs parallel to the axis of the rubber pad top screw are provided on the outer wall surface of the rotating handle.