Water tank liquid level control system
By designing a water tank liquid level control system that contains liquid level sensors, electrical control valves and alarms, the problem of liquid level control caused by the corrosion of mechanical parts and stagnation is solved. The alarm discovered abnormal situation in time, reducing the management and maintenance needs of human resources.
Patent Information
- Application Number
- CN202420545427.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The existing water tank level control system has the problem of excessive water filling or no water intake in the water tank. It lacks the alarm self-test function, which requires a lot of human resources to do it. Inspection and repair.
Design a liquid level control system including the water tank body, the liquid level sensor and the controller, and use the two electronically controlled valves (normal open valves and normally closed valves) and flow sensors Alarm issued alarm under the condition of liquid level abnormalities or stuck, and the manual valve is set to design a redundant design to cope with the emergency.
The high -precision monitoring and adjustment of the water tank liquid level was achieved, and the problem of overly or not in the water level of the liquid level was avoided. Through the alarm, the alarm was discovered in a timely manner or stagnation, and the management and maintenance needs of human resources were reduced Simple and easy to maintain.
Smart Images
Figure CN222420857U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water tank liquid level control, and in particular relates to a water tank liquid level control system. Background Art
[0002] Since the water tank is connected to the water pipe network, the current water tank level control mostly uses PLC + water pipe inlet valve + multi-link + float in the water tank to control the liquid level. The mechanical parts are immersed in water for a long time or the active parts are exposed to water impurities, which causes corrosion and stagnation, and cannot be effectively moved, causing the water tank level to overflow or the water tank to not enter the water. There is no alarm self-checking function, which requires a lot of human resources to check, manage and repair. In addition, when the existing mechanical float is used for liquid level control, due to the mechanical parts being immersed in water for a long time or the active parts being exposed to water impurities, corrosion and stagnation occur, resulting in problems such as not returning to the original position. Utility Model Content
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a water tank liquid level control system which has a simple structure and can control the water level in the water tank and has a redundant design for the electric control valve.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a water tank liquid level control system, comprising a water tank body, a liquid level sensor and a controller, the water tank body having a first water inlet, two electric-controlled valves being arranged at the first water inlet, the liquid level sensor being arranged in the water tank body, the liquid level sensor and the two electric-controlled valves being electrically connected to the controller, one of the electric-controlled valves being a normally open valve, and the other electric-controlled valve being a normally closed valve.
[0005] The beneficial effect of the above technical solution is that the liquid level of the water tank body can be adjusted jointly by the liquid level sensor, the controller and the electric control valve, and two electric control valves can be set, one as a normally open valve and the other as a normally closed valve, and the normally closed valve is opened and closed as needed under the control of the controller. When the normally closed valve is stuck and cannot be completely closed, it can be closed by the normally open valve.
[0006] The above technical solution also includes a flow sensor, which is arranged at the first water inlet and is electrically connected to the controller.
[0007] The beneficial effect of the above technical solution is that: in this way, the flow sensor can be used to sense whether the normally closed valve cannot be completely closed due to sticking when in the closed state.
[0008] The above technical solution also includes an alarm, which is arranged outside the water tank body and is electrically connected to the controller.
[0009] The beneficial effect of the above technical solution is that when the liquid level in the water tank body is abnormal, or when the normally closed valve is not completely closed due to sticking, the controller can control the alarm to sound an alarm.
[0010] The alarm described in the above technical solution is an audible and visual alarm.
[0011] The beneficial effects of the above technical solution are: its structure is simple, and the alarm signal can be easily known by people.
[0012] In the above technical solution, a second water inlet is also provided on the water tank body, and a manual valve is provided at the second water inlet.
[0013] The beneficial effect of the above technical solution is that a redundant design is implemented by arranging the first water inlet and the second water inlet on the water tank body, so that in an emergency, the water level in the water tank body can be adjusted by manually opening and closing the manual valve.
[0014] In the above technical solution, the first water inlet and the second water inlet are joined by a tee.
[0015] The beneficial effect of the above technical solution is that the first water inlet and the second water inlet are connected to a common water pipe.
[0016] The liquid level sensor described in the above technical solution is a scale liquid level gauge.
[0017] The beneficial effect of the above technical solution is that it can perform high-precision water level monitoring in the water tank body.
[0018] The water tank body in the above technical solution is also provided with an overflow port.
[0019] The beneficial effect of the above technical solution is that when the water level in the water tank body rises abnormally, the excess water in the water tank body can be discharged through the overflow port.
[0020] The overflow port in the above technical solution is connected to a drain pipe.
[0021] The beneficial effect of the above technical solution is that the water overflowing from the overflow port can be drained away through the drain pipe, thus avoiding water flowing around the water tank body. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of the water tank liquid level control system according to an embodiment of the utility model;
[0023] Figure 2 This is a schematic diagram of electrical connections of a controller in an embodiment of the utility model;
[0024] Figure 3It is a schematic structural diagram of the top view of the water tank body in the embodiment of the utility model.
[0025] In the figure: 1. Water tank body; 11. First water inlet; 12. Second water inlet; 13. Overflow port; 2. Liquid level sensor; 3. Controller; 4. Electric control valve; 4a. Normally open valve; 4b. Normally closed valve; 5. Flow sensor; 6. Alarm; 7. Manual valve; 8. Tee; 9. Drain pipe. DETAILED DESCRIPTION
[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be more clearly described. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0027] like Figure 1-Figure 3 As shown, this embodiment provides a water tank liquid level control system, including a water tank body 1, a liquid level sensor 2 and a controller 3, the water tank body 1 has a first water inlet 11, two electric-controlled valves 4 are arranged at the first water inlet 11, the liquid level sensor 2 is arranged in the water tank body 1, the liquid level sensor 2 and the two electric-controlled valves 4 are electrically connected to the controller 3, one of the electric-controlled valves 4 is a normally open valve, and the other of the electric-controlled valves 4 is a normally closed valve, so that the liquid level of the water tank body can be adjusted by the liquid level sensor, the controller and the electric-controlled valves together, and the two electric-controlled valves can be set, one as a normally open valve 4a, and the other as a normally closed valve 4b, and the normally closed valve is opened and closed as needed under the control of the controller, and when the normally closed valve is stuck and cannot be completely closed, it can be closed by the normally open valve.
[0028] The above technical solution also includes a flow sensor 5, which is arranged at the first water inlet 11 and is electrically connected to the controller 3. In this way, the flow sensor can be used to sense whether the normally closed valve cannot be completely closed due to sticking when in the closed state.
[0029] The above technical solution also includes an alarm 6, which is arranged outside the water tank body 1 and is electrically connected to the controller 3. In this way, when the liquid level in the water tank body is abnormal, or the normally closed valve is not completely closed due to sticking, the controller can control the alarm to sound an alarm.
[0030] The alarm device 6 described in the above technical solution is an audible and visual alarm device, which has a simple structure and the alarm signal can be easily known by people.
[0031] In the above technical solution, the water tank body 1 is also provided with a second water inlet 12, and a manual valve 7 is provided at the second water inlet 12. A redundant design is implemented by arranging the first water inlet and the second water inlet on the water tank body. In this way, in an emergency, the water level in the water tank body can be adjusted by manually opening and closing the manual valve.
[0032] In the above technical solution, the first water inlet 11 and the second water inlet 12 are joined together through the tee 8, so that the first water inlet and the second water inlet are connected to a common water pipe.
[0033] The liquid level sensor 2 described in the above technical solution is a scale liquid level gauge, which can perform high-precision water level monitoring in the water tank body.
[0034] The water tank body 1 in the above technical solution is also provided with an overflow port 13, so that when the water level in the water tank body rises abnormally, the excess water in the water tank body can be discharged through the overflow port.
[0035] The overflow port 13 in the above technical solution is connected to the drain pipe 9 so that the water overflowing from the overflow port can be drained away through the drain pipe, thus avoiding water dripping around the water tank body.
[0036] In this embodiment, the horizontal heights of the first water inlet and the second water inlet can be set to be consistent, and the horizontal height of the overflow port can be slightly higher than the first water inlet.
[0037] The normally open valve in this embodiment is in a normally open state. It is only when the normally closed valve is in a closed state but the flow sensor still senses the flow (that is, it is assumed that the normally closed valve is stuck in the closed state and causes a loose closure), the normally open valve switches to the closed state. Of course, when the manual valve is in a normal state, it is also in a closed state. The controller in this embodiment can adopt an arm series single-chip microcomputer, wherein, Figure 1 The dotted lines in the figure represent electrical connection lines.
[0038] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.
Claims
1. A water tank liquid level control system, characterized in that: The invention comprises a water tank body (1), a liquid level sensor (2) and a controller (3); the water tank body (1) is provided with a first water inlet (11); two electric control valves (4) are arranged at the first water inlet (11); the liquid level sensor (2) is arranged in the water tank body (1); the liquid level sensor (2) and the two electric control valves (4) are electrically connected to the controller (3); one of the electric control valves (4) is a normally open valve, and the other electric control valve (4) is a normally closed valve.
2. The water tank liquid level control system according to claim 1, characterized in that: It also comprises a flow sensor (5), wherein the flow sensor (5) is arranged at the first water inlet (11), and the flow sensor (5) is electrically connected to the controller (3).
3. The water tank liquid level control system according to claim 1, characterized in that: It also includes an alarm (6), which is arranged outside the water tank body (1) and is electrically connected to the controller (3).
4. The water tank liquid level control system according to claim 3, characterized in that: The alarm (6) is an audible and visual alarm.
5. The water tank liquid level control system according to claim 1, characterized in that: The water tank body (1) is also provided with a second water inlet (12), and a manual valve (7) is provided at the second water inlet (12).
6. The water tank liquid level control system according to claim 5, characterized in that: The first water inlet (11) and the second water inlet (12) are joined via a tee (8).
7. The water tank liquid level control system according to claim 1, characterized in that: The liquid level sensor (2) is a scale liquid level gauge.
8. The water tank liquid level control system according to any one of claims 1 to 7, characterized in that: The water tank body (1) is also provided with an overflow port (13).
9. The water tank liquid level control system according to claim 8, characterized in that: The overflow port (13) is in communication with the drain pipe (9).