Nitrogen making unit control system based on automatic switching of flow and nitrogen pressure

Abstract

The utility model discloses a nitrogen making unit control system based on automatic switching of flow and nitrogen pressure. The nitrogen making unit control system comprises a first nitrogen making line, a second nitrogen making line, a nitrogen flow sensor, a nitrogen pressure sensor, a controller and a switching execution mechanism, the nitrogen flow sensor and the nitrogen pressure sensor are both mounted on a nitrogen output pipeline of the first nitrogen production line; the switching execution mechanism is electrically connected with a starting mechanism of the second nitrogen production line, and the switching execution mechanism, the nitrogen flow sensor and the nitrogen pressure sensor are electrically connected with the controller. According to the utility model, the switching execution mechanism can be controlled to automatically start the second nitrogen production line when the first nitrogen production line cannot meet production requirements, so that the reliability and the stability of nitrogen supply are improved, the risk of production interruption caused by insufficient nitrogen supply is reduced, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen making technical field especially relates to a kind of nitrogen making unit control system based on flow and nitrogen pressure automatic switching. BACKGROUND

[0002] In many industrial production processes, such as chemical, electronic, food preservation and other fields, stable supply of nitrogen is crucial. Nitrogen making unit as a device to produce nitrogen may face the situation that nitrogen produced by one nitrogen making line cannot meet the production demand in actual production.

[0003] Traditional nitrogen making unit operation often relies on manual monitoring and manual switching. This way not only inefficient, but also easy to cause nitrogen supply interruption or shortage due to human negligence, affecting the continuity of production and product quality, increasing production cost. UTILITY MODEL CONTENT

[0004] To solve the technical problems existing in the background art, the utility model provides a kind of nitrogen making unit control system based on flow and nitrogen pressure automatic switching.

[0005] The utility model provides a kind of nitrogen making unit control system based on flow and nitrogen pressure automatic switching, comprising: first nitrogen making line, second nitrogen making line, nitrogen flow sensor, nitrogen pressure sensor, controller and switching execution mechanism;Nitrogen flow sensor and nitrogen pressure sensor are both installed on the nitrogen output pipeline of first nitrogen making line;Switching execution mechanism is electrically connected with the starting mechanism of second nitrogen making line, and switching execution mechanism, nitrogen flow sensor and nitrogen pressure sensor are electrically connected with controller respectively.

[0006] Preferably, it further includes alarm mechanism, and alarm mechanism is electrically connected with controller.

[0007] Preferably, alarm mechanism is audible and visual alarm mechanism.

[0008] Preferably, switching execution mechanism includes relay and electromagnetic valve, controller is electrically connected with relay, relay is electrically connected with electromagnetic valve, and electromagnetic valve is electrically connected with the starting mechanism of second nitrogen making line.

[0009] Preferably, nitrogen flow sensor and nitrogen pressure sensor are both high-precision sensors.

[0010] Preferably, controller uses programmable logic controller.

[0011] In specific implementation, nitrogen flow sensor monitors the flow information of nitrogen in real time, and transmits the flow information to controller;

[0012] Nitrogen pressure sensor monitors the pressure information of nitrogen in real time, and transmits the pressure information to controller;

[0013] The controller receives the flow information and the pressure information, and determines whether the first nitrogen production line can meet the production demand according to the flow information and the pressure information and preset flow threshold and pressure threshold;

[0014] When the flow value in the flow information is lower than the flow threshold and the pressure value in the pressure information is lower than the pressure threshold for a predetermined time, it is determined that the first nitrogen production line cannot meet the production demand;

[0015] If it is determined that the first nitrogen production line cannot meet the production demand, the controller sends a control signal to the switching execution mechanism; after receiving the control signal of the controller, the switching execution mechanism starts the second nitrogen production line, so that the two nitrogen production lines run simultaneously to meet the demand for nitrogen in production.

[0016] In the utility model, the nitrogen production unit control system based on flow and nitrogen pressure automatic switching can detect the flow and pressure of nitrogen of the first nitrogen production line in real time, and determine that the first nitrogen production line cannot meet the production demand according to the flow and pressure of nitrogen of the first nitrogen production line; moreover, when the first nitrogen production line cannot meet the production demand, the switching execution mechanism can automatically start the second nitrogen production line, and the two nitrogen production lines can produce nitrogen simultaneously, so that the reliability and stability of nitrogen supply are improved, the risk of production interruption caused by insufficient nitrogen supply is reduced, the production efficiency is improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure diagram of the nitrogen production unit control system based on flow and nitrogen pressure automatic switching in an embodiment of the utility model is shown.

[0018] Figure 2 The structure diagram of the nitrogen production unit control system based on flow and nitrogen pressure automatic switching in another embodiment of the utility model is shown. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0020] Referring to Figure 1 The nitrogen production unit control system based on flow and nitrogen pressure automatic switching provided by the utility model comprises a first nitrogen production line, a second nitrogen production line, a nitrogen flow sensor, a nitrogen pressure sensor, a controller and a switching execution mechanism.

[0021] The nitrogen flow sensor and the nitrogen pressure sensor are both installed on a nitrogen output pipeline of the first nitrogen production line; the switching actuator is electrically connected with a starting mechanism of the second nitrogen production line, and the switching actuator, the nitrogen flow sensor and the nitrogen pressure sensor are all electrically connected with the controller.

[0022] The nitrogen flow sensor is configured to monitor the flow information of the nitrogen in real time and transmit the flow information to the controller.

[0023] The nitrogen pressure sensor is configured to monitor the pressure information of the nitrogen in real time and transmit the pressure information to the controller.

[0024] When the flow value in the flow information is lower than the flow threshold value and the pressure value in the pressure information is lower than the pressure threshold value for a predetermined time, it is determined that the first nitrogen production line cannot meet the production demand.

[0025] If it is determined that the first nitrogen production line cannot meet the production demand, the controller is configured to send a control signal to the switching actuator.

[0026] The switching actuator is configured to start the second nitrogen production line after receiving the control signal from the controller, so that the two nitrogen production lines run simultaneously to meet the demand for nitrogen in production.

[0027] With reference to Figure 2 In this embodiment, an alarm mechanism is further included, which is electrically connected with the controller.

[0028] Specifically, when the flow value in the received flow information is lower than the flow threshold value and the pressure value in the pressure information is lower than the pressure threshold value for a predetermined time, the controller sends a signal to the alarm mechanism, and the alarm mechanism alarms to remind the staff to check whether there is a fault or other abnormal situation in the first nitrogen production line in time.

[0029] The alarm mechanism can be an audible alarm mechanism, a light alarm mechanism or an audible and light alarm mechanism.

[0030] In the embodiment, the switching execution mechanism includes a relay and a solenoid valve, the controller is electrically connected with the relay, the relay is electrically connected with the solenoid valve, the solenoid valve is electrically connected with the starting mechanism of the second nitrogen production line, and the relay is used to control the on-off of the solenoid valve, and the on-off of the solenoid valve is used to control the starting and stopping of the starting mechanism of the second nitrogen production line.

[0031] Specifically, when the controller sends a control signal to the switching execution mechanism, the relay is used to act after receiving the control signal of the controller to control the solenoid valve to open, so as to start the second nitrogen production line, realize the simultaneous operation of the two nitrogen production lines, and ensure the stable supply of nitrogen.

[0032] It should be known that the nitrogen flow sensor and the nitrogen pressure sensor in the embodiment are both high-precision sensors, so as to ensure the accuracy and reliability of the monitoring data.

[0033] The controller in the embodiment adopts a programmable logic controller (PLC), has the advantages of flexible programming, high reliability and easy maintenance, and is convenient for adjusting the flow threshold value, the pressure threshold value and the switching logic according to different production process requirements.

[0034] In the working process of one specific embodiment, the nitrogen flow sensor and the nitrogen pressure sensor monitor the flow information and the pressure information of the nitrogen output by the first nitrogen production line in real time, and transmit the flow information and the pressure information to the controller; the controller compares the received flow information with the preset flow threshold value, and compares the pressure information with the preset pressure threshold value; if the flow value is lower than the flow threshold value and the pressure value is lower than the pressure threshold value for 30 seconds, the controller determines that the nitrogen produced by the first nitrogen production line cannot meet the production requirements; at this time, the controller sends a control signal to the switching execution mechanism; the relay in the switching execution mechanism acts after receiving the signal, controls the solenoid valve to open, so as to start the second nitrogen production line, the two nitrogen production lines operate simultaneously, and the stable supply of nitrogen is ensured. At the same time, the controller sends an alarm signal to the sound-light alarm mechanism, the sound-light alarm mechanism issues a sound-light alarm, reminding the staff to pay attention to the running state of the first nitrogen production line and to check and maintain.

[0035] The above only describes the preferred specific embodiments of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A control system for a nitrogen generator unit based on automatic switching of flow rate and nitrogen pressure, characterized in that, include: The system comprises a first nitrogen production line, a second nitrogen production line, a nitrogen flow sensor, a nitrogen pressure sensor, a controller, and a switching actuator. The nitrogen flow sensor and the nitrogen pressure sensor are both installed on the nitrogen output pipe of the first nitrogen production line. The switching actuator is electrically connected to the starting mechanism of the second nitrogen production line, and the switching actuator, the nitrogen flow sensor, and the nitrogen pressure sensor are electrically connected to the controller.

2. The nitrogen generator control system based on automatic switching of flow rate and nitrogen pressure according to claim 1, characterized in that, It also includes an alarm mechanism, which is electrically connected to the controller.

3. The nitrogen generator control system based on automatic switching of flow rate and nitrogen pressure according to claim 2, characterized in that, The alarm mechanism is an audible and visual alarm mechanism.

4. The nitrogen generator control system based on automatic switching of flow rate and nitrogen pressure according to claim 1, characterized in that, The switching actuator includes a relay and a solenoid valve. The controller is electrically connected to the relay, the relay is electrically connected to the solenoid valve, and the solenoid valve is electrically connected to the starting mechanism of the second nitrogen generation line.

5. The nitrogen generator control system based on automatic switching of flow rate and nitrogen pressure according to claim 1, characterized in that, Both the nitrogen flow sensor and the nitrogen pressure sensor are high-precision sensors.

6. The nitrogen generator control system based on automatic switching of flow rate and nitrogen pressure according to claim 1, characterized in that, The controller is a programmable logic controller.

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