Over and under pressure acousto-optic alarm protection device for heat exchange station

Abstract

The utility model discloses a kind of overvoltage and undervoltage acousto-optic alarm protection devices of heat exchange station, including monitoring device, overvoltage and undervoltage protection system, power supply system, alarm system and test system, the monitoring device includes voltmeter installed in input, the overvoltage and undervoltage protection system includes overvoltage and undervoltage protector, overvoltage and undervoltage protector compares with rated power supply to the power supply voltage of detection input, if input side voltage is higher than rated voltage, protection system action disconnects circuit and plays a protective role, if input side voltage is lower than rated voltage, protection system action disconnects circuit and plays a protective role, the power supply system includes 12V direct current power supply, lithium battery group provides power supply for alarm system, the alarm system includes sound-light alarm, the test system includes test switch to test whether alarm system is normal work, the utility model relates to heat exchange station control system power protection technical field.The device plays overvoltage protection, undervoltage protection, power flash protection for heat exchange station control system power, reduces the failure frequency of control system electrical equipment, saves cost, guarantees the stable and safe operation of heat exchange station control system.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange station technology, specifically to a heat exchange station over / under voltage audible and visual alarm protection device. Background Technology

[0002] The power supply of the heat exchange station control system needs to be stable. The power supply of the existing heat exchange station control system comes from the power distribution system, which is powered by the mains power supply. The mains power supply often experiences power outages. When the power distribution system fails, the voltage may be too high or too low, which will cause the electrical equipment of the heat exchange station control system to malfunction or damage the electrical components. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an over / under voltage audible and visual alarm protection device for heat exchange stations. This device solves the problem that existing heat exchange station control systems cannot function properly due to over / under voltage caused by mains power outages or power distribution system failures, thus preventing the electrical equipment of the heat exchange station control system from operating normally.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A heat exchange station over / under voltage audible and visual alarm protection device includes: a monitoring device, an over / under voltage protection system, a power supply system, an alarm system, and a testing system. The monitoring device includes a voltmeter installed at the input terminal to detect the input voltage. The over / under voltage protection system includes an over / under voltage protector that compares the detected input voltage with the rated voltage. If the input voltage is higher than the rated voltage, the protection system trips the circuit to provide protection; if the input voltage is lower than the rated voltage, the protection system trips the circuit to provide protection. The power supply system includes a 12V DC power supply and a lithium battery pack to provide power to the alarm system. The alarm system includes an audible and visual alarm. The testing system includes a test switch to test whether the alarm system is working properly.

[0006] Preferably, the alarm system includes an audible and visual alarm installed inside the heat exchange station, which emits an audible and visual alarm when the protector is powered off.

[0007] Preferably, the monitoring device detects the power supply voltage of the heat exchange station control system in real time.

[0008] Preferably, the overvoltage and undervoltage protection system can be set with overvoltage and undervoltage values ​​to ensure that the protection values ​​are within a specified range.

[0009] Preferably, the power supply system provides power assurance for the alarm system when the protector operates and there is no voltage output.

[0010] Preferably, the testing system tests whether the audible and visual alarm functions properly under normal system operation. Attached Figure Description

[0011] Figure 1 This is a structural block diagram of the present utility model; Figure 2 The circuit diagram of this utility model is shown below; 1. Voltmeter; 2. Over / under voltage protector; 3. Intermediate relay; 4. 12V DC power supply; 5. Lithium battery pack; 6. Normally closed contact of intermediate relay; 7. Test switch; 8. Audible and visual alarm. Detailed Implementation

[0012] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0013] This utility model provides a heat exchange station over / under voltage audible and visual alarm protection device, including a monitoring device, an over / under voltage protection system, a power supply system, an alarm system, and a testing system. The monitoring device includes a voltmeter 1 installed at the input end to detect the input voltage. The over / under voltage protection system includes an over / under voltage protector 2. The power supply system includes a 12V DC power supply 4 and a lithium battery pack 5. The alarm system includes an audible and visual alarm 8 and an intermediate relay 3. The testing system includes a test switch 7.

[0014] The detection device transmits the collected signals to the control system through a signal concentrator. After receiving abnormal data, the signal concentrator sends an audible and visual alarm signal to the control system. When the signal concentrator continuously receives abnormal data for a period of time, it automatically controls the electric regulating valve and the electric valve to close. This eliminates the need for manual operation of the heat exchange station, saving manpower and avoiding the problem of on-duty personnel not being able to detect heat exchange station failures in a timely manner.

[0015] Monitoring system: Voltmeter 1, which is connected to the mains power input side.

[0016] Over / under voltage protection system: Over / under voltage protector 2 is connected to the mains power supply side and can be set with over / under voltage protection values.

[0017] Alarm system: The audible and visual alarm 8 is connected in series with the normally closed contact 6 of the intermediate relay and in parallel with the lithium battery pack 5.

[0018] Power system: 12V DC power supply 4 is connected to the lithium battery pack 5.

[0019] Test system: Test switch 7 is connected in series with audible and visual alarm 8.

[0020] During operation, voltmeter 1 collects the input voltage value, and over / under voltage protector 2 monitors the input voltage to determine if it is within the rated voltage value. If the monitored voltage is not within the set value, the over / under voltage protector activates to cut off the power supply and protect the load. Intermediate relay 3 is de-energized, and the normally closed contact 6 of the intermediate relay closes, causing the audible and visual alarm 8 to sound an alarm. If the voltage returns to the rated voltage, over / under voltage protector 2 automatically restores power supply, ensuring normal operation of the equipment.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange station over / under voltage audible and visual alarm protection device, comprising a monitoring device, an over / under voltage protection system, a power supply system, an alarm system, and a testing system, characterized in that: The monitoring device includes a voltmeter installed at the input terminal to detect the input voltage. The over / under voltage protection system includes an over / under voltage protector that compares the detected input voltage with the rated voltage. If the input voltage is higher than the rated voltage, the protection system trips and disconnects the circuit for protection. If the input voltage is lower than the rated voltage, the voltage protection system trips and disconnects the circuit for protection. The power supply system includes a 12V DC power supply and a lithium battery pack to provide power to the alarm system. The alarm system includes an audible and visual alarm that sounds when the protector trips. The testing system includes a test switch to test whether the alarm system is working properly.

2. The over / under voltage audible and visual alarm protection device for a heat exchange station according to claim 1, characterized in that: The alarm system includes an audible and visual alarm installed inside the heat exchange station, which emits an audible and visual alarm when the protector is powered off.

3. The over / under voltage audible and visual alarm protection device for a heat exchange station according to claim 1, characterized in that: The monitoring device detects the power supply voltage of the heat exchange station control system in real time.

4. The over / under voltage audible and visual alarm protection device for a heat exchange station according to claim 1, characterized in that: The overvoltage and undervoltage protection system can be set with overvoltage and undervoltage values ​​to keep the protection values ​​within a specified range.

5. The over / under voltage audible and visual alarm protection device for a heat exchange station according to claim 1, characterized in that: The power supply system provides power assurance for the alarm system when the over / under voltage protector trips and there is no voltage output.

6. The over / under voltage audible and visual alarm protection device for a heat exchange station according to claim 1, characterized in that: The test system is used to test whether the audible and visual alarm works properly under normal operating conditions.

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