Tail gas rectification device for centrifugal machine room

Abstract

The utility model relates to the field of tail gas rectification, in particular to a centrifugal machine room tail gas rectification device which comprises a centrifugal machine room, a centrifugal machine is placed in the centrifugal machine room, a nitrogen protection assembly is arranged on the centrifugal machine, and a tail gas emission assembly is arranged at the side end of the centrifugal machine room. The nitrogen protection device has the advantages that the nitrogen cylinder set and the exhaust fan can be effectively interlocked, that is, when the exhaust fan is not started or breaks down and cannot smoothly conduct exhaust emission operation, the nitrogen cylinder set can be automatically cut off to fill nitrogen into the centrifugal machine, the nitrogen protection device is simple in structure and convenient to operate, and operation is convenient. And when it is detected that the oxygen concentration is lower than a set value, the nitrogen bottle set can be automatically cut off from filling nitrogen into the centrifugal machine, it is guaranteed that the nitrogen content in the centrifugal machine area cannot be continuously increased, and therefore waste of nitrogen is effectively avoided, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tail gas rectification, in particular to a tail gas rectification device for a centrifuge room. Background Art

[0002] Nitrogen protection for centrifuges is to configure a nitrogen inlet pipe and a nitrogen outlet pipe on the casing. When the centrifuge is working, nitrogen and oxygen are filled into the inner cavity. Usually, inert gas protection is selected. Nitrogen is filled into the centrifuge to replace the internal air, so that the oxygen concentration is kept within the safety limit.

[0003] Although the exhaust gas from the centrifuge room can be discharged through the exhaust fan at this stage, the nitrogen cylinder group cannot be well interlocked with the exhaust fan, resulting in nitrogen continuing to be filled into the centrifuge when the exhaust fan is not started or fails, and then discharged into the centrifuge room as exhaust gas before being discharged, resulting in nitrogen waste and increased costs, which needs further improvement.

[0004] In the prior art, therefore, how to design a centrifuge room exhaust gas rectification device has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centrifuge room tail gas rectification device, comprising a centrifuge room, a centrifuge is placed inside the centrifuge room, a nitrogen protection component is arranged on the centrifuge, a tail gas emission component is arranged at the side end of the centrifuge room, and an interlocking control mechanism is electrically connected between the nitrogen protection component and the tail gas emission component;

[0006] The interlock control mechanism includes a control component, a first detection component for detecting the oxygen concentration in the centrifuge room, a cut-off component for cutting off the nitrogen delivery, and a second detection component for detecting whether the exhaust emission component is operating normally. The exhaust emission component, the first detection component, the cut-off component and the second detection component are all electrically connected to the control component.

[0007] Preferably, the nitrogen protection component is a nitrogen bottle group, which is placed on one side of the centrifuge, and the output end of the nitrogen bottle group is fixedly connected to a nitrogen inlet pipe. An inner cavity is provided in the centrifuge, and the end of the nitrogen inlet pipe is fixedly connected to the inlet of the inner cavity of the centrifuge, and the outlet of the inner cavity of the centrifuge is fixedly connected to a nitrogen outlet pipe.

[0008] Preferably, the exhaust gas emission component is an emission hole, the emission hole is opened at the side end of the centrifuge room, an exhaust fan is fixed inside the emission hole, and dust covers are fixed at both ends of the emission hole.

[0009] Preferably, the control component is a control box, which is fixed to the inner surface of the side end of the centrifuge room, and a controller is fixed inside the control box.

[0010] Preferably, the first detection component is four oxygen sensors, and the four oxygen sensors are respectively fixedly installed at four corners of the top of the inner wall of the centrifuge room, and the four oxygen sensors are electrically connected to the controller.

[0011] Preferably, the cut-off component is a solenoid valve, the solenoid valve flange is connected to the nitrogen inlet pipe body, and the solenoid valve is electrically connected to a controller.

[0012] Preferably, the second detection component is a voltage sensor, the voltage sensor is fixed in a control box, the controller is electrically connected to the voltage sensor, and the voltage sensor is electrically connected to the exhaust fan.

[0013] Preferably, the second detection component is a support frame, the support frame is fixed to the outer surface of the side end of the centrifuge room, an anemometer is fixedly installed on the end of the support frame, the anemometer is electrically connected to the controller, and the controller is electrically connected to the exhaust fan.

[0014] The beneficial effect of the utility model is that the nitrogen bottle group and the exhaust fan can be effectively interlocked by using the centrifuge room, the centrifuge, the nitrogen protection component, the exhaust gas emission component and the interlocking control mechanism. That is, when the exhaust fan is not started or fails to smoothly perform the exhaust gas emission operation, the nitrogen bottle group can be automatically cut off from filling nitrogen into the centrifuge, and the oxygen concentration in the centrifuge room can be well detected. When the oxygen concentration is detected to be lower than the set value, the nitrogen bottle group can be automatically cut off from filling nitrogen into the centrifuge, ensuring that the nitrogen content in the centrifuge area will not continue to increase, thereby effectively avoiding the waste of nitrogen and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the structure of the first embodiment provided by the utility model;

[0017] Figure 2 A circuit connection block diagram of the first embodiment provided by the utility model;

[0018] Figure 3 A schematic diagram of the structure of the second embodiment provided by the utility model;

[0019] Figure 4 This is a circuit connection block diagram of the second embodiment provided by the utility model.

[0020] In the figure: 1. Centrifuge room; 2. Centrifuge; 3. Nitrogen bottle group; 4. Nitrogen inlet pipe; 5. Centrifuge inner cavity; 6. Nitrogen outlet pipe; 7. Discharge hole; 8. Exhaust fan; 9. Dust cover; 10. Control box; 11. Controller; 12. Oxygen sensor; 13. Solenoid valve; 14. Voltage sensor; 15. Support frame; 16. Anemometer. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] Embodiment 1:

[0023] Please refer to the attached Figure 1-2 The centrifuge room tail gas rectification device provided by the utility model comprises a centrifuge room 1, a centrifuge 2 is placed inside the centrifuge room 1, a nitrogen protection component is arranged on the centrifuge 2, a tail gas emission component is arranged at the side end of the centrifuge room 1, an interlocking control mechanism is electrically connected between the nitrogen protection component and the tail gas emission component, the interlocking control mechanism comprises a control component, a first detection component for detecting the oxygen concentration in the centrifuge room 1, a cut-off component for cutting off the nitrogen delivery, and a second detection component for detecting whether the tail gas emission component is operating normally, and the tail gas emission component, the first detection component, the cut-off component and the second detection component are all electrically connected to the control component;

[0024] The nitrogen protection component is a nitrogen bottle group 3, which is placed on one side of the centrifuge 2. The output end of the nitrogen bottle group 3 is fixedly connected with a nitrogen inlet pipe 4. An inner cavity 5 is provided in the centrifuge 2. The end of the nitrogen inlet pipe 4 is fixedly connected with the inlet of the centrifuge inner cavity 5, and the outlet of the centrifuge inner cavity 5 is fixedly connected with a nitrogen outlet pipe 6. It should be noted that the nitrogen bottle group is a well-known technology for those skilled in the art and will not be described in detail. Specifically, the nitrogen in the nitrogen bottle group 3 can be filled into the inner cavity 5 provided in the centrifuge 2 through the nitrogen inlet pipe 4, and then discharged into the centrifuge room 1 through the nitrogen outlet pipe 6, that is, nitrogen is filled into the centrifuge 2 to replace the air inside, so that the oxygen concentration is kept within the safety limit;

[0025] The exhaust gas discharge component is a discharge hole 7, which is opened at the side end of the centrifuge room 1. An exhaust fan 8 is fixed inside the discharge hole 7, and dust covers 9 are fixed at both ends of the discharge hole 7. Specifically, when the exhaust fan 8 is running, the exhaust gas containing nitrogen and other waste gases in the centrifuge room 1 can be discharged through the discharge hole 7;

[0026] The control component is a control box 10, which is fixed on the inner surface of the side end of the centrifuge room 1. A controller 11 is fixed inside the control box 10. It should be noted that the controller 11 is preferably set as a SIMATIC S7-200PLC controller, and the controller 11 is electrically connected to an external 220V power supply;

[0027] The first detection component is four oxygen sensors 12. It should be noted that the oxygen sensor is a device that can detect the concentration of oxygen in the surrounding environment and convert the measurement result into a readable output signal. The four oxygen sensors 12 are respectively fixedly installed at the four corners of the top of the inner wall of the centrifuge room 1. The four oxygen sensors 12 are electrically connected to the controller 11. Specifically, the oxygen sensor can detect the oxygen concentration at different positions in the centrifuge room 1 in real time, and then monitor the change of oxygen concentration in real time through the signal output by the sensor, and transmit the output model to the controller 11, so that the detection of oxygen concentration in the centrifuge room 1 can be well realized;

[0028] The cut-off component is a solenoid valve 13, which is flange-connected to the nitrogen inlet pipe 4, and is electrically connected to the controller 11, that is, the controller 11 has the function of controlling the switch of the solenoid valve 13. Specifically, the user can set the oxygen concentration setting value through the controller 11. When it is detected that the oxygen concentration is lower than the setting value, the controller 11 automatically cuts off the nitrogen cylinder group 3 from filling nitrogen into the centrifuge 2, ensuring that the nitrogen content in the centrifuge 2 area will not continue to increase;

[0029] The second detection component is a voltage sensor 14, which is fixed in the control box 10, and the controller 11 is electrically connected to the voltage sensor 14, which is electrically connected to the exhaust fan 8. It should be noted that the voltage sensor is a device that can convert a voltage signal in a circuit into a measurable output signal. The voltage sensor is connected to a position where the voltage needs to be monitored, and the voltage change is monitored in real time through the signal output by the sensor. Specifically, the voltage sensor 14 can detect in real time whether the exhaust fan 18 has a working voltage, thereby detecting in real time whether the exhaust fan 18 is operating normally. When the voltage sensor 14 cannot detect the voltage signal, the exhaust fan 18 is in an unstarted or faulty state, and then the controller 11 controls the solenoid valve 3 to close, that is, the device can effectively interlock the nitrogen bottle group 3 with the exhaust fan 8. When the exhaust fan 8 is not started or fails to perform the exhaust gas emission operation smoothly, the nitrogen bottle group 3 can be automatically cut off from filling the centrifuge 2 with nitrogen, thereby effectively avoiding the waste of nitrogen and reducing costs.

[0030] The working principle of the utility model is as follows: when the centrifuge 2 is running, the nitrogen bottle group 3 normally transports nitrogen into the inner cavity 5 of the centrifuge 2 through the nitrogen inlet pipe 4, and the nitrogen is discharged from the nitrogen outlet pipe 6. When the exhaust fan 18 is operating normally, the tail gas containing nitrogen and other waste gases in the centrifuge room 1 is discharged through the discharge hole 7. Then, when any oxygen sensor 12 detects that the oxygen concentration in the centrifuge room 1 is lower than the set value, the controller 11 automatically cuts off the nitrogen bottle group 3 from filling nitrogen into the centrifuge 2 to ensure that the nitrogen content in the centrifuge 2 area will not continue to increase. When the exhaust fan 8 is not started or fails to smoothly perform the tail gas discharge operation, the voltage sensor 14 cannot detect the voltage signal at this time, and then the controller 11 controls the solenoid valve 3 to close, that is, the device can effectively interlock the nitrogen bottle group 3 with the exhaust fan 8. When the exhaust fan 8 is not started or fails to smoothly perform the tail gas discharge operation, the nitrogen bottle group 3 can be automatically cut off from filling nitrogen into the centrifuge 2, thereby effectively avoiding the waste of nitrogen and reducing costs.

[0031] Embodiment 2:

[0032] Please refer to the attached Figure 3-4 The centrifuge room exhaust gas rectification device provided by the utility model, the second detection component is a support frame 15, the support frame 15 is fixed on the outer surface of the side end of the centrifuge room 1, and an anemometer 16 is fixedly installed at the end of the support frame 15, the anemometer 16 is electrically connected to the controller 11, and the controller 11 is electrically connected to the exhaust fan 8. It should be noted that the anemometer can directly measure the wind speed generated by the exhaust fan, and will provide an analog output signal, such as a voltage or current signal, which can be directly connected to the analog input channel of the controller 11. In this way, the controller 11 can receive and process real-time wind speed data from the anemometer, and perform corresponding monitoring and control. Specifically, when the exhaust fan 8 is not started or fails to smoothly perform the exhaust gas emission operation, that is, when it is no longer exhausted, the output signal transmitted by the anemometer 16 to the controller 11 changes. At this time, the controller 11 can automatically cut off the nitrogen bottle group 3 from filling the centrifuge 2 with nitrogen, thereby effectively avoiding the waste of nitrogen and reducing costs.

[0033] The working principle of the utility model is as follows: when the centrifuge 2 is running, the nitrogen bottle group 3 normally delivers nitrogen to the inner cavity 5 of the centrifuge 2 through the nitrogen inlet pipe 4, and the nitrogen is discharged from the nitrogen outlet pipe 6. When the exhaust fan 18 is operating normally, the tail gas containing nitrogen and other waste gases in the centrifuge room 1 is discharged through the discharge hole 7. Then, when any oxygen sensor 12 detects that the oxygen concentration in the centrifuge room 1 is lower than the set value, the controller 11 automatically cuts off the nitrogen bottle group 3 from filling nitrogen into the centrifuge 2 to ensure that the nitrogen content in the centrifuge 2 area will not continue to increase. When the exhaust fan 8 is not started or fails to smoothly perform the tail gas discharge operation, that is, when the exhaust fan 8 is no longer exhausted, the output signal delivered by the anemometer 16 to the controller 11 changes. At this time, the controller 11 can automatically cut off the nitrogen bottle group 3 from filling nitrogen into the centrifuge 2, thereby effectively avoiding the waste of nitrogen and reducing costs.

[0034] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. Centrifuge room tail gas rectification device, characterized in that: include: It comprises a centrifuge room (1) in which a centrifuge (2) is placed; A nitrogen protection component, which is arranged at the centrifuge (2); An exhaust gas emission component is arranged at the inner end of the centrifuge room (1) and is electrically connected to the nitrogen protection component via an interlocking control mechanism; The interlock control mechanism comprises a control component, a first detection component for detecting the oxygen concentration in the centrifuge room (1), a cut-off component for cutting off the nitrogen supply, and a second detection component for detecting whether the exhaust gas emission component is operating normally, and the exhaust gas emission component, the first detection component, the cut-off component and the second detection component are all electrically connected to the control component.

2. The centrifuge room tail gas rectification device according to claim 1, characterized in that: The nitrogen protection component is a nitrogen bottle group, which is placed on one side of the centrifuge (2); A nitrogen inlet pipe (4), the output end of the nitrogen bottle group (3) is fixedly connected to the nitrogen inlet pipe (4); The centrifuge (2) is provided with an inner cavity (5), the end of the nitrogen inlet pipe (4) is fixedly connected to the inlet of the centrifuge inner cavity (5), and the outlet of the centrifuge inner cavity (5) is fixedly connected to the nitrogen outlet pipe (6).

3. The centrifuge room tail gas rectification device according to claim 2, characterized in that: The exhaust gas emission component is an emission hole (7), which is opened at the side end of the centrifuge room (1), an exhaust fan (8) is fixed inside the emission hole (7), and dust covers (9) are fixed at both ends of the emission hole (7).

4. The centrifuge room tail gas rectification device according to claim 3 is characterized in that: The control component is a control box (10), the control box (10) is fixed on the inner surface of the side end of the centrifuge room (1), and a controller (11) is fixed inside the control box (10).

5. The centrifuge room tail gas rectification device according to claim 4, characterized in that: The first detection component is four oxygen sensors (12), and the four oxygen sensors (12) are respectively fixedly installed at four corners of the top of the inner wall of the centrifuge room (1), and the four oxygen sensors (12) are electrically connected to the controller (11).

6. The centrifuge room tail gas rectification device according to claim 5, characterized in that: The cut-off component is a solenoid valve (13), the solenoid valve (13) is flange-connected to the body of the nitrogen inlet pipe (4), and the solenoid valve (13) is electrically connected to the controller (11).

7. The centrifuge room tail gas rectification device according to claim 6, characterized in that: The second detection component is a voltage sensor (14), the voltage sensor (14) is fixed in the control box (10), the controller (11) is electrically connected to the voltage sensor (14), and the voltage sensor (14) is electrically connected to the exhaust fan (8).

8. The centrifuge room tail gas rectification device according to claim 7, characterized in that: The second detection component is a support frame (15), the support frame (15) is fixed to the outer surface of the side end of the centrifuge room (1), and an anemometer (16) is fixedly installed at the end of the support frame (15). The anemometer (16) is electrically connected to the controller (11), and the controller (11) is electrically connected to the exhaust fan (8).

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