One-key start-stop control device for nitrogen making equipment

Abstract

The utility model discloses a one-key start-stop control device for nitrogen-making equipment. The one-key start-stop control device comprises a control system, the nitrogen-making equipment and a monitoring system, the control system comprises a PLC (Programmable Logic Controller), a touch screen and an actuator; the nitrogen making equipment comprises an air compressor, a freezing dryer and a nitrogen making machine, and further comprises a gas storage tank; the monitoring system comprises a pressure sensor, a temperature sensor and a flow sensor; the pressure sensor and the temperature sensor are both mounted on a gas inlet pipeline of the nitrogen making machine, and the flow sensor is mounted on a gas outlet pipeline of the nitrogen making machine; the pressure sensor, the temperature sensor and the flow sensor are electrically connected with a PLC (Programmable Logic Controller); the PLC is electrically connected with the air compressor, the freezing dryer and the nitrogen making machine through an actuator; according to the utility model, by integrating an automatic control technology, the intelligent start-stop operation of equipment is realized, the operation process is simplified, and the safety and reliability of equipment operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generation equipment, specifically a one-button start / stop control device for nitrogen generation equipment. Background Technology

[0002] Nitrogen generators are key equipment for producing nitrogen through air separation technologies (such as PSA pressure swing adsorption or membrane separation technology), and are widely used in industries such as chemical, food, pharmaceutical, and electronics. Utility Model Content

[0003] The purpose of this invention is to provide a one-button start / stop control device for nitrogen generators to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A one-button start / stop control device for nitrogen generators includes a control system, nitrogen generators, and a monitoring system. The control system includes a PLC controller, a touch screen, and actuators. The nitrogen generator includes an air compressor, a refrigerated dryer, and a nitrogen generator, as well as a gas storage tank. The monitoring system includes a pressure sensor, a temperature sensor, and a flow sensor. The pressure and temperature sensors are installed on the inlet pipe of the nitrogen generator, while the flow sensor is installed on the exhaust pipe. The pressure, temperature, and flow sensors are electrically connected to the PLC controller, which in turn is electrically connected to the air compressor, refrigerated dryer, and nitrogen generator via actuators. A nitrogen analyzer is also included, electrically connected to the PLC controller of the control system. The nitrogen analyzer is model P8603N and is installed on the exhaust pipe of the nitrogen generator.

[0006] Furthermore, the specific model of the PLC controller is a PLC relay module, namely 6ES7288-1SR20-0AA1.

[0007] Furthermore, the touchscreen model is TPC7032Nt, WIFI version.

[0008] Furthermore, the actuator is an intermediate relay with the model number MY2N-D2-GS.

[0009] Furthermore, the model number of the audible and visual alarm device is ND2-51ZFR.

[0010] Furthermore, the pressure sensor is model QDW90A-VD.

[0011] Furthermore, the temperature sensor is model QDWR-VD.

[0012] Furthermore, the flow sensor is a LUGB intelligent vortex flow meter.

[0013] Furthermore, it also includes physical buttons that are electrically connected to the PLC controller.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Easy to operate: With the one-click start / stop function, users do not need to manually operate multiple devices, which significantly simplifies the operation process.

[0016] Safe and reliable: Multiple safety protection measures ensure that the equipment automatically shuts down in abnormal situations to avoid safety accidents.

[0017] High efficiency and energy saving: Automated control optimizes equipment operating efficiency, reduces energy consumption, and extends equipment life.

[0018] Fault diagnosis: Real-time monitoring and alarm functions help users quickly locate faults and reduce downtime. Attached Figure Description

[0019] Figure 1 A schematic diagram of a one-button start / stop control device for a nitrogen generator.

[0020] Figure 2 A control block diagram for a one-button start / stop control device for a nitrogen generator. Detailed Implementation

[0021] 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 some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. 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 the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] Please see Figure 1-2 A one-button start / stop control device for nitrogen generators, comprising a control system 100, a nitrogen generator 200, and a monitoring system 300;

[0023] The control system 100 includes a PLC controller 101, a touch screen 102, and an actuator 103;

[0024] The specific model of the PLC controller 101 is: 6ES7288-1SR20-0AA1, a PLC relay module;

[0025] The touchscreen 102 is model TPC7032Nt, WIFI version;

[0026] The actuator 103 is an intermediate relay of model MY2N-D2-GS;

[0027] The model of the audible and visual alarm device 104 is ND2-51ZFR;

[0028] The nitrogen generating equipment 200 includes an air compressor 201, a refrigerated dryer 202, and a nitrogen generator 203, and also includes a gas storage tank (not shown in the figure);

[0029] The monitoring system 300 includes a pressure sensor 301, a temperature sensor 302, and a flow sensor 303; the pressure sensor 301 and the temperature sensor 302 are both installed on the air inlet pipe of the nitrogen generator 203, while the flow sensor 303 is installed on the air outlet pipe of the nitrogen generator 203.

[0030] The temperature sensor 302 is installed at the air inlet pipe of the nitrogen generator 203. Its function is to protect the membrane module and carbon molecules, because the membrane module and carbon molecules have requirements for the air inlet temperature, which cannot be higher than 45-50 degrees.

[0031] The pressure sensor 301 is used to monitor the pressure inside the pipeline, and also serves to protect the membrane assembly and carbon molecules, as well as monitor the air pressure inside the pipeline.

[0032] The flow sensor 303 is used to monitor the outlet pressure and outlet flow rate. Its main function is to monitor whether the outlet flow rate of the equipment can meet the flow rate requirements.

[0033] The pressure sensor 301 is model QDW90A-VD;

[0034] The temperature sensor 302 is model GWD200B-B, an intrinsically safe explosion-proof temperature sensor for coal mines.

[0035] The flow sensor 303 is model LUGB;

[0036] The pressure sensor 301, temperature sensor 302, and flow sensor 303 are electrically connected to the PLC controller 101. The PLC controller 101 is then electrically connected to the air compressor 201, the refrigerated dryer 202, and the nitrogen generator 203 via the actuator 103.

[0037] In some implementations of this solution, a physical button is also included, which is electrically connected to the PLC controller 101;

[0038] When the control device of this scheme is put into use,

[0039] Users can trigger the "one-click start" command via touchscreen or physical button.

[0040] The control system automatically detects the status of each device and starts the devices in a preset sequence after ensuring there are no faults.

[0041] First, start the air compressor. After the air compressor is running stably, start the refrigerated dryer. After the refrigerated dryer is running normally, start the nitrogen generator.

[0042] The system monitors the operating parameters of each device in real time (such as pressure, temperature, flow rate, etc.) to ensure the normal operation of the equipment;

[0043] Once all devices reach the set parameters, the system enters a stable operating state, and the touchscreen displays the "Running" status.

[0044] Startup logic:

[0045] Before system startup, a self-test is performed to ensure that all devices are fault-free and their parameters are normal.

[0046] Strictly follow the equipment startup sequence to avoid equipment damage due to incorrect sequence;

[0047] If an abnormality is detected during startup, the system will automatically stop and trigger an alarm.

[0048] This solution also includes a one-click stop function;

[0049] Stop procedure:

[0050] Users can trigger the "one-click stop" command via touchscreen or physical button.

[0051] The control system stops the equipment in a preset sequence:

[0052] First, stop the nitrogen generator. After the nitrogen generator has completely stopped, stop the refrigerated dryer, and finally stop the air compressor.

[0053] After the system confirms that all devices have stopped, it enters standby mode, and the touchscreen displays the "Stopped" status.

[0054] Stop logic:

[0055] Strictly follow the equipment shutdown sequence to ensure safe equipment shutdown.

[0056] If an abnormality is detected during the shutdown process, the system will trigger an alarm and record the fault information.

[0057] This solution also includes a nitrogen analyzer 400, which is electrically connected to the PLC controller 101 of the control system 100. The model of the nitrogen analyzer 400 is P8603N. The nitrogen analyzer 400 is installed on the exhaust pipe of the nitrogen generator 203. A valve is also installed on the exhaust pipe of the nitrogen generator 202.

[0058] Control method: The nitrogen purity is monitored by the nitrogen analyzer 400 and the PLC controller 101 is used to monitor whether it is qualified. If it is not qualified, the PLC controller transmits relevant instructions to control the actuator to open the unqualified venting pipeline valve to vent the unqualified nitrogen; otherwise, it opens the qualified venting valve to vent the qualified nitrogen to the storage tank.

[0059] When the nitrogen analyzer 400 detects a nitrogen concentration below 97-99%, it will identify it as substandard nitrogen and automatically vent it out, preventing it from being discharged into the storage tank. This ensures the nitrogen concentration in the storage tank and also meets the user's nitrogen concentration requirements.

[0060] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A one-key start-stop control device for nitrogen production equipment, comprising a control system, nitrogen production equipment and a monitoring system; characterized in that, The control system comprises a PLC controller, a touch screen and an actuator; the nitrogen making equipment comprises an air compressor, a cold dryer and a nitrogen making machine, and further comprises a gas storage tank; the monitoring system comprises a pressure sensor, a temperature sensor and a flow sensor, and further comprises an audible and visual alarm device; the pressure sensor and the temperature sensor are both installed on the air inlet pipeline of the nitrogen making machine, and the flow sensor is installed on the air outlet pipeline of the nitrogen making machine; the pressure sensor, the temperature sensor and the flow sensor are electrically connected with the PLC controller, and the PLC controller is electrically connected with the air compressor, the cold dryer and the nitrogen making machine through the actuator; further comprising a nitrogen analyzer, which is electrically connected with the PLC controller of the control system, and the model of the nitrogen analyzer is P8603N; the nitrogen analyzer is installed on the air outlet pipeline of the nitrogen making machine.

2. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The specific model of the PLC controller is a PLC relay module with the model of 6ES7288-1SR20-0AA1.

3. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the touch screen is TPC7032Nt, WIFI version.

4. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the actuator is a middle relay with the model of MY2N-D2-GS.

5. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the audible and visual alarm device is ND2-51ZFR.

6. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the pressure sensor is QDW90A-VD.

7. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the temperature sensor is QDWR-VD.

8. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, The model of the flow sensor is LUGB.

9. The one-key start-stop control device of the nitrogen making equipment according to claim 1, characterized in that, Further comprising a physical button, which is electrically connected with the PLC controller.

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