Valve state monitoring and feedback device
By combining a main relay, motor, limit switch, current sensing switch and time relay, the valve status is monitored in real time, which solves the problem of inaccurate valve status monitoring in the existing technology and achieves faster and more reliable fault detection.
Patent Information
- Application Number
- CN202423119450.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In existing technologies, valve status monitoring mainly relies on limit switch signals, which makes it difficult to reflect complex abnormal situations in a timely manner, especially in high-pressure environments where false alarms or missed alarms are prone to occur.
The system employs a combination of main relay, motor, limit switch, current sensing switch, time relay, and alarm module. The current sensing switch detects the current status in real time, and the time relay analyzes the position of the limit switch to generate an offset signal and trigger an alarm, ensuring timely fault detection.
It effectively avoids missed or false alarms caused by monitoring a single signal source, and improves the response speed in abnormal states and the safety and stability of the device.
Smart Images
Figure CN223825742U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve control technical field especially is related to a valve state monitoring and feedback device. BACKGROUND
[0002] As the key equipment in fluid control system, valves are widely used in chemical industry, petroleum industry, metallurgy industry and other industrial fields. By opening and closing the valve, the precise control of fluid flow, pressure and direction parameters can be realized to meet the needs of production process. In recent years, with the rapid development of industrial automation, electric valves have been more and more widely used due to their convenience and reliability.
[0003] In the prior art, limit switches are usually used to detect the opening and closing position state of the valve to determine whether the valve reaches the preset position. When the valve state is abnormal, the alarm device can send a signal to remind the operator to check.
[0004] However, the prior art still has the following shortcomings: the current system mainly relies on limit switch signals to feedback the state of the valve, and this single monitoring method is difficult to reflect the complex abnormal conditions in the valve operation in time. Especially in high pressure environment, the impact of water pressure or gas pressure may cause the displacement of the limit switch, resulting in false alarm or missed alarm. INVENTION CONTENTS
[0005] The utility model provides a valve state monitoring and feedback device in view of the prior art exists the insufficient.
[0006] The utility model solves the technical scheme as follows for the above technical problem: a valve state monitoring and feedback device, characterized in that, comprising: main relay, motor and target valve, wherein, the motor includes motor driver, and the main relay is connected with the motor through the motor driver;The main relay generates the drive signal acting on the motor driver according to the input signal, so that the motor driver drives the motor to rotate according to the drive signal;The motor is connected with the target valve, and the motor is used to control the on-off state of the target valve.
[0007] Further, the monitoring and feedback device further comprises:
[0008] The limit switch is installed in the target valve, and the target valve comprises a closing piece;The limit switch and the closing piece have a triggering relationship, and when the closing piece triggers the limit switch, the limit switch generates a stop signal and sends the stop signal to the motor driver to control the motor to stop working.
[0009] Further, the monitoring and feedback device further comprises:
[0010] The current sensing switch is arranged in the control circuit and is used to detect whether current exists in the control circuit; when current exists in the control circuit, the current sensing switch generates an electric signal and continuously sends the electric signal to the time relay.
[0011] Further, the monitoring and feedback device further comprises:
[0012] The time relay is used to receive the electric signal sent by the current sensing switch and determine whether the position state of the limit switch is abnormal according to the electric signal; if the position state of the limit switch is an abnormal state, the time relay generates a deviation signal representing that the limit switch deviates and sends the deviation signal to the alarm module.
[0013] Further, the position state of the limit switch is determined by the following steps:
[0014] When the time relay first receives the electric signal sent by the current sensing switch, the time relay counts according to a preset closing time;
[0015] If the current sensing switch stops sending the electric signal to the time relay within the closing time interval set by the time relay, it is determined that the position state of the limit switch is a normal state;
[0016] If the current sensing switch does not stop sending the electric signal to the time relay outside the closing time interval set by the time relay, it is determined that the position state of the limit switch is an abnormal state.
[0017] Further, the monitoring and feedback device further comprises:
[0018] The alarm module comprises a buzzer and an alarm lamp, and is used to receive the deviation signal and control the buzzer and the alarm lamp to alarm according to the deviation signal, so as to prompt the worker to reset the limit switch.
[0019] Further, the time relay further comprises:
[0020] The control output unit is used to generate a control signal representing a state abnormality when the time relay determines that the position state of the limit switch is an abnormal state; the control signal is sent to the current sensing switch, so that the current sensing switch performs a circuit breaking operation on the control circuit according to the control signal, so that the main relay stops sending the driving signal to the motor driver.
[0021] Further, the monitoring and feedback device further comprises:
[0022] The computer is in communication connection with the time relay, and is configured to receive valve model information corresponding to the target valve, and query the standard closing time corresponding to the target valve in a pre-configured standard closing time table according to the valve model information.
[0023] Further, the computer is further configured to:
[0024] According to the standard closing time corresponding to the target valve, the pre-configured closing time corresponding to the time relay is determined, and the pre-configured closing time corresponding to the time relay is sent to the time relay.
[0025] Compared with the prior art, the utility model has the advantages that:
[0026] The current induction switch detects the current state in the control circuit in real time, and sends the electric signal to the time relay, the time relay analyzes and compares the change of the electric signal through the pre-configured closing time, so as to determine whether the limit switch deviates, the fault missing report or false report problem caused by single signal source monitoring in the prior art can be avoided, the response speed to the abnormal state is further improved, the safety and stability of the device are further enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical scheme in the specific embodiment or prior art of the utility model, the drawings needed in the specific embodiment or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the premise.
[0028] Fig. 1 It is an exemplary structural schematic diagram of a valve state monitoring and feedback device in the embodiment of the application.
[0029] Fig. 2 It is a feedback strategy diagram of a valve state monitoring and feedback device in the embodiment of the application. DETAILED DESCRIPTION
[0030] The technical scheme of the utility model will be described clearly and completely in combination with the embodiments, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] This utility model embodiment provides a valve status monitoring and feedback device, such as... Figs. 1-2 As shown, the system includes a main relay 100, a motor 200, and a target valve 300. The motor 200 includes a motor driver 210, and the main relay 100 is connected to the motor 200 via the motor driver 210. The main relay 100 generates a drive signal acting on the motor driver 210 based on an input signal. For example, an operator can send an input signal to the main relay 100 via a control panel or remote control to control the working state of the motor 200, so that the motor driver 210 drives the motor 200 to rotate according to the drive signal. The motor 200 is connected to the target valve 300 and is used to control the on / off state of the target valve 300.
[0034] Specifically, the monitoring and feedback device also includes:
[0035] Limit switch 400 is installed inside target valve 300, which includes a closing element 310. Limit switch 400 and closing element 310 are in a trigger relationship. When closing element 310 triggers limit switch 400, limit switch 400 generates a stop signal and sends the stop signal to motor driver 210 to control motor 200 to stop working.
[0036] In some embodiments, one end of the closing member 310 is connected to the motor 200 by a bolt, and on this basis, the motor 200 drives the closing member 310 to move in the horizontal direction through the rotating force, so as to realize the opening and closing operation of the target valve 300. As an example, when the closing member 310 reaches the preset position, the limit switch 400 is triggered, and after the limit switch 400 is triggered, a stop signal is sent, indicating that the closing member 310 has reached the preset position. The limit switch 400 generates a stop signal and sends it to the motor driver 210, and after the motor driver 210 receives the stop signal, the motor 200 stops working.
[0037] As shown in Fig. 2 The monitoring and feedback device further comprises:
[0038] The current sensing switch 500 is arranged in the control circuit, and the current sensing switch 500 is used to detect whether there is current in the control circuit; when there is current in the control circuit, the current sensing switch 500 generates an electric signal and continuously sends the electric signal to the time relay 600.
[0039] In some embodiments, when the motor 200 is working, there is current flowing in the control circuit. Specifically, if there is current in the control circuit, it indicates that the motor 200 is in a starting state; if no current is detected in the control circuit, it indicates that the motor 200 is in a stopped state. When the current sensing switch 500 detects that there is current in the control circuit, the current sensing switch 500 generates an electric signal and continuously sends the electric signal to the time relay 600. Wherein, the process of sending the electric signal to the time relay 600 is continuous, that is, as long as there is current in the control circuit, the current sensing switch 500 will not stop sending the electric signal to the time relay 600. The main purpose of setting the current sensing switch 500 is to determine whether the closing member 310 has reached the preset position. Specifically, the closing member 310 is driven to move by the motor 200, and the working state of the motor 200 can be judged by the current in the control circuit. Therefore, by detecting the current in the control circuit, it can be indirectly determined whether the closing member 310 has reached its preset position.
[0040] Specifically, the monitoring and feedback device further comprises:
[0041] The time relay 600 is used to receive the electric signal sent by the current sensing switch 500, and determine whether the position state of the limit switch 400 is abnormal according to the electric signal; if the position state of the limit switch 400 is an abnormal state, the time relay 600 generates a deviation signal representing that the limit switch 400 deviates, and sends the deviation signal to the alarm module 700. Specifically, the position state of the limit switch 400 is determined by the following steps:
[0042] When the time relay 600 first receives the electric signal sent by the current sensing switch 500, the time relay 600 starts timing according to the preset closing time;
[0043] If the current sensing switch 500 stops sending the electric signal to the time relay 600 within the closing time interval set by the time relay 600, it is determined that the position state of the limit switch 400 is a normal state.
[0044] If the current sensing switch 500 does not stop sending the electric signal to the time relay 600 outside the closing time interval set by the time relay 600, it is determined that the position state of the limit switch 400 is an abnormal state.
[0045] In some embodiments, when the time relay 600 first receives the electric signal sent by the current sensing switch 500, timing starts according to the preset closing time. As an example, the preset closing time can be 15 seconds. When the preset closing time is 15 seconds, the closing time interval is 0-15 seconds. If the current sensing switch 500 stops sending the electric signal to the time relay 600 within the closing time interval set by the time relay 600, it indicates that the closing member 310 has successfully triggered the limit switch 400, and the motor 200 stops working. It is determined that the position state of the limit switch 400 is a normal state. If the current sensing switch 500 does not stop sending the electric signal to the time relay 600 outside the closing time interval set by the time relay 600, it indicates that the closing member 310 fails to correctly trigger the limit switch 400, and the motor 200 does not stop working. It is determined that the position state of the limit switch 400 is an abnormal state.
[0046] Specifically, the monitoring and feedback device further comprises:
[0047] The alarm module 700 comprises a buzzer and an alarm lamp, and the alarm module 700 is configured to receive the offset signal and control the buzzer and the alarm lamp to alarm according to the offset signal, so as to prompt the worker to reset the limit switch 400.
[0048] Specifically, the time relay 600 further comprises:
[0049] The control output unit 610 is configured to generate a control signal representing a state abnormality when the time relay 600 determines that the position state of the limit switch 400 is an abnormal state, and send the control signal to the current sensing switch 500, so that the current sensing switch 500 performs a circuit breaking operation on the control circuit according to the control signal, so that the main relay 100 stops sending the driving signal to the motor driver 210.
[0050] Specifically, the monitoring and feedback device further comprises:
[0051] The computer 800 is in communication connection with the time relay 600, and the computer 800 is configured to receive the valve model information corresponding to the target valve 300, and query the standard closing time table pre-configured according to the valve model information to obtain the standard closing time corresponding to the target valve 300.
[0052] In some embodiments, the computer 800 can be various types of electronic computers, including but not limited to industrial control computers, embedded computers or servers. In practice, the computer 800 can be in communication connection with the time relay 600 through various communication modes, for example, wired communication modes (such as serial communication or Ethernet communication) or wireless communication modes (such as Wi-Fi, Bluetooth or ZigBee). On this basis, after receiving the valve model information input by the operator, the computer 800 queries the valve model information in the pre-configured standard closing time table to obtain the standard closing time corresponding to the target valve 300. The standard closing time table includes valve models and the standard closing time corresponding to the valve models. For example, the valve model of the target valve 300 is “V-200”, and the computer 800 can query the standard closing time of the valve model (V-200) in the standard closing time table to be 15 seconds.
[0053] Specifically, the computer 800 is further configured to:
[0054] determine the preset closing time corresponding to the time relay 600 according to the standard closing time corresponding to the target valve 300, and send the preset closing time corresponding to the time relay 600.
[0055] In some embodiments, for example, for the target valve 300 with the valve model “V-200”, the computer 800 determines the standard closing time of the target valve 300 to be 15 seconds after querying. However, in actual operation, in order to cope with possible slight errors or delays in the mechanical system, the computer 800 will increase 2-3 seconds as a buffer time on the basis of the standard closing time of 15 seconds. Therefore, the computer 800 sends any selected one of the adjusted 17 seconds or 18 seconds to the time relay 600 as the preset closing time, and displays the sending state and the adjusted preset closing time value on the computer 800 interface for the operator to check.
[0056] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A valve status monitoring and feedback device, characterized in that, include: The system comprises a main relay, a motor, and a target valve. The motor includes a motor driver, and the main relay is connected to the motor via the motor driver. The main relay generates a drive signal based on an input signal, which acts on the motor driver to drive the motor to rotate according to the drive signal. The motor is connected to the target valve and is used to control the on / off state of the target valve. The monitoring and feedback device also includes: A current sensing switch is disposed in a control circuit and is used to detect whether there is current in the control circuit. When there is current in the control circuit, the current sensing switch generates an electrical signal and continuously sends the electrical signal to a time relay. A limit switch is installed inside the target valve, which includes a closing element. The limit switch and the closing element are in a trigger relationship. When the closing element triggers the limit switch, the limit switch generates a stop signal and sends the stop signal to the motor driver to control the motor to stop working. A time relay is used to receive the electrical signal sent by the current sensing switch and determine whether the position state of the limit switch is abnormal based on the electrical signal; if the position state of the limit switch is abnormal, the time relay generates an offset signal indicating that the limit switch has deviated and sends the offset signal to the alarm module.
2. The valve status monitoring and feedback device according to claim 1, characterized in that, The monitoring and feedback device also includes: An alarm module, comprising a buzzer and an alarm light, is used to receive an offset signal and control the buzzer and alarm light to sound an alarm based on the offset signal, so as to prompt the staff to reset the limit switch.
3. The valve status monitoring and feedback device according to claim 1, characterized in that, The time relay also includes: A control output unit is configured to generate a control signal indicating an abnormal state when the time relay determines that the position state of the limit switch is abnormal; and send the control signal to the current sensing switch so that the current sensing switch performs a circuit breaking operation on the control circuit according to the control signal, thereby causing the main relay to stop sending drive signals to the motor driver.
4. The valve status monitoring and feedback device according to claim 1, characterized in that, The monitoring and feedback device also includes: The computer is communicatively connected to the time relay. The computer is used to receive valve model information corresponding to the target valve and query a pre-configured standard closing time table based on the valve model information to obtain the standard closing time corresponding to the target valve.
5. The valve status monitoring and feedback device according to claim 4, characterized in that, The computer is also used for: The preset closing time corresponding to the time relay is determined based on the standard closing time of the target valve, and the preset closing time is sent to the time relay.