An automatic water level monitoring and water replenishment control system for an isostatic press

Abstract

The embodiment of the application provides a kind of isostatic press water level automatic monitoring and water replenishment control system, it is related to industrial equipment intelligent control technical field, including liquid level detector, inspection pipe, controller, relay and alarm device;Liquid level detector is set in the working cavity of isostatic press, for real-time detection working cavity water level;Working cavity side wall is connected with inspection pipe, and inspection pipe is communicated with inside working cavity;Liquid level detector is electrically connected with controller, and controller is electrically connected with relay;Alarm device is set outside working cavity, and is electrically connected with controller, and alarm device includes audible and visual alarm;When liquid level detector detects that water level is abnormal, controller triggers alarm device to issue alarm signal, the top of the working cavity is connected with water replenishment pipe, water pump is connected on water replenishment pipe, electric water replenishment valve is connected in series on water replenishment pipe, and electric water replenishment valve is electrically connected with controller.The application has improved water level measurement accuracy, safe and easy to control effect.

Description

Technical Field

[0001] This utility model relates to the field of intelligent control technology for industrial equipment, and in particular to an automatic water level monitoring and water replenishment control system for an isostatic press. Background Technology

[0002] An isostatic press is a molding equipment that operates under ultra-high pressure. Its working principle is to use fluid media such as liquids or gases to uniformly transmit pressure, so that the workpiece is subjected to equal pressure on each surface, thereby achieving the molding or densification of the material.

[0003] There are three major pain points in the current water level management of isostatic presses:

[0004] 1. Low efficiency of manual monitoring: Frequent manual inspections are required, making it impossible to monitor water level changes in real time, which affects the continuous operation efficiency of the equipment;

[0005] 2. Poor measurement accuracy: Traditional mechanical water level gauges are easily affected by pressure fluctuations, resulting in inaccurate water replenishment control;

[0006] 3. Lack of early warning mechanism: It cannot automatically alarm or intervene when there is a sudden abnormal water level, which can easily lead to safety accidents such as dry burning of equipment and failure of seals;

[0007] 4. Mechanical float valves can only achieve basic water replenishment and cannot record data. Utility Model Content

[0008] To address the aforementioned technical problems, this application provides an automatic water level monitoring and water replenishment control system for an isostatic press.

[0009] The technical solution for automatic water level monitoring of an isostatic press provided in this application is as follows:

[0010] An automatic water level monitoring and water replenishment control system for an isostatic press includes a level detector, an inspection pipe, a controller, a relay, and an alarm device. The level detector is installed inside the working chamber of the isostatic press for real-time monitoring of the water level in the working chamber. An inspection pipe is connected to the side wall of the working chamber and communicates with the interior of the working chamber. The level detector is electrically connected to the controller, and the controller is electrically connected to the relay. The alarm device is located outside the working chamber and is electrically connected to the controller. When the level detector detects an abnormal water level, the controller triggers the alarm device to issue an alarm signal. A water replenishment pipe is connected to the top of the working chamber, a water pump is connected to the water replenishment pipe, and an electric water replenishment valve is connected in series on the water replenishment pipe and electrically connected to the controller.

[0011] Furthermore, the liquid level detector is a float-type water level sensor, and the float-type water level sensor outputs a digital switch signal.

[0012] Furthermore, the inspection tube is a transparent tube, and an inspection valve is provided on the inspection tube to control the opening and closing of the connection between the inspection tube and the working chamber.

[0013] Furthermore, the liquid level detector and the controller, as well as the relay and the controller, are electrically connected via shielded wires. The controller is an embedded STM32 controller, and a preset water level threshold algorithm is included within the controller.

[0014] Furthermore, a drainage device is provided at the bottom of the working chamber. The drainage device includes a drain pipe connected to the working chamber, and an electric drain valve is installed on the drain pipe. The electric drain valve is electrically connected to the controller.

[0015] Furthermore, an RC filter circuit and an opto-isolation circuit are connected in series in the signal transmission link between the controller and the liquid level detector.

[0016] Furthermore, the controller is also connected to a remote communication module, which can remotely transmit water level data and equipment operating status to the monitoring center.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] Real-time and accurate monitoring: The liquid level detector uses a float-type water level sensor to output a digital switch signal, which can stably and accurately provide real-time feedback on the water level in the working chamber. Combined with the water level threshold algorithm in the embedded STM32 controller, it can accurately determine the water level status. Compared with traditional mechanical water level gauges, it is less affected by pressure fluctuations, which greatly improves the accuracy of water level measurement.

[0019] Automatic Alarm and Intervention: When the level detector detects an abnormal water level, the controller immediately triggers an audible and visual alarm to alert staff. Simultaneously, it automatically controls the electric water supply valve or electric drain valve based on the water level, achieving automatic water supply or drainage and effectively preventing safety accidents such as dry burning or seal failure caused by abnormal water levels.

[0020] Convenient maintenance and safety assurance: The inspection tube is transparent and equipped with an inspection valve, which allows staff to visually observe the water level. When maintaining the liquid level detector or inspection tube, closing the inspection valve can prevent leakage of the medium in the working chamber and ensure maintenance safety.

[0021] Strong anti-interference capability: Shielded wire electrical connections are used between the level detector and the controller, and between the relay and the controller. In addition, an RC filter circuit and an opto-isolation circuit are connected in series in the signal transmission link between the controller and the level detector to effectively isolate electromagnetic interference and high voltage interference in the industrial environment, ensuring the accuracy of water level detection and control command transmission.

[0022] Remote monitoring and management: The controller is connected to a remote communication module, which can remotely transmit water level data and equipment operating status to the monitoring center. This allows managers to remotely monitor the equipment status, enable remote operation and management, improve the efficiency of equipment management, and reduce the workload of manual inspections. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application.

[0024] Figure 2 This is a schematic diagram of the overall workflow of an embodiment of this application.

[0025] Explanation of reference numerals in the attached diagram: 1. Working chamber; 2. Liquid level detector; 3. Inspection pipe; 4. Inspection valve; 5. Water supply pipe; 6. Electric water supply valve; 7. Water pump; 8. Drain pipe; 9. Electric drain valve. Detailed Implementation

[0026] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0027] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0028] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0029] This application discloses an automatic water level monitoring and water replenishment control system for an isostatic press, referring to... Figure 1 and Figure 2 The system includes a level detector 22, an inspection tube 33, a controller, a relay, and an alarm device. The level detector 22 is installed inside the working chamber 11 of the isostatic press and is used to detect the water level in the working chamber 11 in real time. The inspection tube 33 is connected to the side wall of the working chamber 11 and communicates with the inside of the working chamber 11. The level detector 22 is electrically connected to the controller, and the controller is electrically connected to the relay. The alarm device is installed outside the working chamber 11 and is electrically connected to the controller. The alarm device includes an audible and visual alarm. When the level detector 22 detects an abnormal water level (below a preset low threshold or above a preset high threshold), the controller triggers the alarm device to emit an alarm signal combining a red flashing light and a buzzer. A water supply pipe 55 is connected to the top of the working chamber 11. A water pump 77 is connected to the water supply pipe 55, and an electric water supply valve 66 is connected in series on the water supply pipe 55. The electric water supply valve 66 is electrically connected to the controller.

[0030] The controller is an embedded STM32 controller with a preset water level threshold algorithm (including low water level replenishment threshold and normal water level threshold). When the level detector 22 detects that the water level is lower than the low water level replenishment threshold, the controller outputs a control signal to open the electric water replenishment valve 66 to replenish water into the working chamber 11. When the water level rises back to the normal water level threshold, the controller outputs a signal to close the electric water replenishment valve 66 and stop replenishing water.

[0031] Reference Figure 1 and Figure 2 The inspection tube 33 is a transparent tube, which can be made of acrylic or glass, etc., so that the staff can directly observe the water level in the working chamber 11. The inspection tube 33 is equipped with an inspection valve 44, which is used to control the connection between the inspection tube 33 and the working chamber 11. When maintaining the liquid level detector 22 or the inspection tube 33, closing the inspection valve 44 can cut off the connection between the two, prevent the leakage of the medium in the working chamber 11, and ensure maintenance safety.

[0032] Reference Figure 1 and Figure 2 The liquid level detector 22 is a float-type water level sensor. The float-type water level sensor can output a digital switch signal (the output signal is 1 when the water level is high and 0 when the water level is low). The high and low signal feedback is used to ensure that the detection signal is stable and recognizable within the water level range of the working chamber 11.

[0033] Reference Figure 1 and Figure 2 The level detector 22 is electrically connected to the controller, and the relay is electrically connected to the controller, all via shielded wires. These shielded wires isolate electromagnetic interference generated by motors, switching power supplies, and other equipment in the industrial environment, preventing interference signals from affecting the accuracy of level detection and the transmission of controller commands.

[0034] Reference Figure 1 and Figure 2 A drainage device is provided at the bottom of the working chamber 11. The drainage device includes a drain pipe 88 connected to the working chamber 11 and an electric drain valve 99 installed on the drain pipe 88. The electric drain valve 99 is electrically connected to the controller. The controller has a preset high water level upper limit threshold. When the liquid level detector 22 detects that the water level is higher than the high water level upper limit threshold, the controller outputs a control signal to open the electric drain valve 99 and drain the excess water in the working chamber 11. When the water level drops to the normal water level threshold, the controller outputs a signal to close the electric drain valve 99 and stop drainage.

[0035] Reference Figure 1 and Figure 2 A signal acquisition module is installed between the controller and the level detector 2. This module, arranged in the order of signal processing, includes an RC filter circuit, an opto-isolation circuit, and an ADC conversion unit. These components are electrically connected sequentially via shielded cables. The RC filter circuit filters out high-frequency electromagnetic interference (such as noise generated by motors in industrial environments) from the output signal of the level detector 2. The opto-isolation circuit uses a PC817 optocoupler to cut off electrical connections, preventing high-voltage interference from entering the controller. The ADC conversion unit converts the filtered and isolated signal into a digital signal recognizable by the controller. If the level detector 2 (float-type water level sensor) outputs an analog signal, the ADC conversion unit quantizes it into a 12-bit digital signal for continuous and accurate water level detection. If the sensor outputs a digital switch signal, the ADC conversion unit filters out level jitter by quantizing the level value to ensure signal stability. The ADC-converted digital signal is transmitted to the embedded STM32 controller, providing computational data for the water level threshold algorithm and supporting precise water replenishment and drainage control. The controller is also connected to a remote communication module, which can remotely transmit water level data and equipment operating status to a monitoring center.

[0036] The above are merely preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included within the protection scope recorded in the claims.

Claims

1. An automatic water level monitoring and water replenishment control system for an isostatic press, characterized in that: The system includes a level detector (2), an inspection tube (3), a controller, a relay, and an alarm device. The level detector (2) is installed inside the working chamber (1) of the isostatic press and is used to detect the water level in the working chamber (1) in real time. The inspection tube (3) is connected to the side wall of the working chamber (1) and is connected to the inside of the working chamber (1). The level detector (2) is electrically connected to the controller, and the controller is electrically connected to the relay. The alarm device is installed outside the working chamber (1) and is electrically connected to the controller. When the level detector (2) detects an abnormal water level, the controller triggers the alarm device to issue an alarm signal. A water supply pipe (5) is connected to the top of the working chamber (1). A water pump (7) is connected to the water supply pipe (5). An electric water supply valve (6) is connected in series on the water supply pipe (5) and is electrically connected to the controller.

2. The isostatic press water level automatic monitoring and water replenishment control system according to claim 1, characterized in that: The liquid level detector (2) is a float-type water level sensor, which outputs a digital switch signal.

3. The isostatic press water level automatic monitoring and water replenishment control system according to claim 1, characterized in that: The inspection tube (3) is a transparent tube, and an inspection valve (4) is provided on the inspection tube (3) to control the opening and closing between the inspection tube (3) and the working chamber (1).

4. The isostatic press water level automatic monitoring and water replenishment control system according to claim 1, characterized in that: The liquid level detector (2) and the controller, as well as the relay and the controller, are all electrically connected via shielded wires.

5. The isostatic press water level automatic monitoring and water replenishment control system according to claim 4, characterized in that: The controller is an embedded STM32 controller, and the controller has a preset water level threshold algorithm.

6. The isostatic press water level automatic monitoring and water replenishment control system according to claim 5, characterized in that: The bottom of the working chamber (1) is provided with a drainage device, which includes a drain pipe (8) connected to the working chamber (1) and an electric drain valve (9) installed on the drain pipe (8). The electric drain valve (9) is electrically connected to the controller.

7. The isostatic press water level automatic monitoring and water replenishment control system according to claim 6, characterized in that: An RC filter circuit and an opto-isolation circuit are connected in series in the signal transmission link between the controller and the liquid level detector (2).

8. The isostatic press water level automatic monitoring and water replenishment control system according to claim 7, characterized in that: The controller is also connected to a remote communication module, which can remotely transmit water level data and equipment operating status to the monitoring center.

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