Safety protection system of inert gas compressor

Abstract

The utility model relates to a safety protection system of an inert gas compressor, which belongs to the technical field of safety protection and comprises a monitoring module, a processing module, an alarm module and a compressor controller, the monitoring module is used for monitoring the oxygen content of a machine room environment where the compressor is located and outputting an oxygen monitoring signal; the processing module is connected to the monitoring module, receives the oxygen monitoring signal and outputs an abnormal early warning signal based on the oxygen monitoring signal; the compressor controller is connected to the processing module, responds to the abnormal early warning signal, controls the compressor to stop and outputs an alarm signal; and the alarm module is connected to the compressor controller and responds to the alarm signal to give an alarm. The inert gas compressor has the effect of improving the running safety of the inert gas compressor.

Description

Technical Field

[0001] The present application relates to the field of safety protection technology, and in particular to a safety protection system for an inert gas compressor. Background Art

[0002] A compressor is a mechanical device used to compress a gas or a mixture of gases to a higher pressure. It is commonly used in various industrial, refrigeration, air conditioning and supply chain applications. The main function of a compressor is to reduce the volume of a gas while increasing its pressure so that it can be effectively used in various projects and applications.

[0003] At present, compressors are used to compress air and inert gases according to industrial needs. For example, in the food packaging industry, nitrogen usually needs to be injected into food packaging containers or bags at a higher pressure to ensure that oxygen is effectively removed. Nitrogen at a higher pressure is also convenient for meeting the needs of high-speed packaging. However, once the inert gas leaks, it will not only affect the compression efficiency, but also cause safety hazards if there are workers in the room where the compressor is installed, causing hypoxia to the workers. How to protect the safety of the room environment where the inert gas compressor is installed is an urgent problem to be solved. Utility Model Content

[0004] In order to facilitate the protection of the environmental safety of a machine room where an inert gas compressor is installed, the present application provides a safety protection system for an inert gas compressor.

[0005] The safety protection system of an inert gas compressor provided in this application adopts the following technical solution:

[0006] A safety protection system for an inert gas compressor includes a monitoring module, a processing module, an alarm module and a compressor controller;

[0007] The monitoring module monitors the oxygen content of the environment of the machine room where the compressor is located and outputs an oxygen monitoring signal;

[0008] The processing module is connected to the monitoring module, receives the oxygen monitoring signal, and outputs an abnormal warning signal based on the oxygen monitoring signal;

[0009] The compressor controller is connected to the processing module, and controls the compressor to stop and outputs an alarm signal in response to the abnormal warning signal;

[0010] The alarm module is connected to the compressor controller and responds to the alarm signal to generate an alarm.

[0011] By adopting the above technical solution, the monitoring module is used to monitor the oxygen content of the computer room environment in real time to output an oxygen monitoring signal. If the processing module detects that the oxygen content is lower than the preset value, it means that the inert gas has leaked, thereby reducing the oxygen content in the air. At this time, an abnormal warning signal is output to the compressor controller to control the compressor controller to stop in time to prevent further leakage of the inert gas, and then an alarm signal is output to the alarm module, so that the alarm module starts to alarm to prompt the surrounding staff to deal with it in time, thereby improving the safety of the operation of the inert gas compressor.

[0012] Optionally, the alarm module includes a switch unit, a first alarm light and a second alarm light;

[0013] The switch unit is connected to the compressor controller, the first alarm light and the second alarm light, and controls the on and off of the first alarm light and the second alarm light in response to the alarm signal;

[0014] The first alarm light is arranged in the machine room, and the second alarm light is arranged outside the machine room.

[0015] By adopting the above technical solution, the switch unit is used to control the switches of the first alarm light and the second alarm light according to the alarm signal output by the compressor controller, and the first alarm light is set in the machine room to prompt the staff in the machine room to leave in time, and the second alarm light is set outside the machine room to prompt the corresponding maintenance personnel to repair the compressor failure in time.

[0016] Optionally, the switch unit includes a single-contact relay; the common contact of the single-contact relay is connected to the negative pole of the first alarm light and the negative pole of the second alarm light, and the normally open contact of the single-contact relay is connected to the positive pole of the first alarm light and the positive pole of the second alarm light.

[0017] By adopting the above technical solution, the first warning light and the second warning light can be controlled synchronously by using a single-contact relay, and the circuit structure is simple and easy to control.

[0018] Optionally, the switch unit includes a multi-contact relay; the common contact of the multi-contact relay is connected to the negative pole of the first alarm light and the negative pole of the second alarm light, the first normally open contact of the multi-contact relay is connected to the positive pole of the first alarm light, and the second normally open contact of the multi-contact relay is connected to the positive pole of the second alarm light.

[0019] By adopting the above technical solution and using a multi-contact switch, the first normally open contact and the second normally open contact are used to respectively control the first warning light and the second warning light, so as to realize the separate control of the first warning light and the second warning light.

[0020] Optionally, the monitoring module includes an oxygen content monitor, the oxygen content monitor is connected to the processing module, and the oxygen content monitor is arranged in a machine room where the compressor is installed.

[0021] By adopting the above technical solution, when the inert gas leaks into the air, as the inert gas in the air increases, the oxygen content in the air will continue to decrease, so that the leakage of the inert gas can be easily monitored by using an oxygen content detector.

[0022] Optionally, the processing module includes a PLC controller.

[0023] By adopting the above technical solution, the PLC controller has programmability and can freely customize specific control solutions to achieve logical processing of oxygen monitoring signals.

[0024] Optionally, it also includes an air circulation device, which is connected to the processing module and responds to the abnormal warning signal to start the replacement of the air in the machine room with the external environment air.

[0025] By adopting the above technical solution, the air circulation device is used to discharge the inert gas to the external environment in time when the inert gas leaks, so as to reduce the impact on the environment of the computer room.

[0026] Optionally, the air circulation device includes an infrared emitter and an air circulation machine;

[0027] The infrared transmitter is connected to the processing module and responds to the abnormal warning signal to output an infrared control signal;

[0028] The air cycle machine is started in response to an infrared control signal.

[0029] By adopting the above technical solution, when an abnormal warning signal is detected, it means that the oxygen content in the air is low at this time. The infrared transmitter is used to control the air circulation machine to start, so that the air in the computer room circulates with the external environment, which facilitates the environment in the computer room to return to normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a block diagram of a safety protection system according to one embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of an alarm module according to one embodiment of the present application.

[0032] Figure 3 It is a block diagram of a security protection system according to another embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. Monitoring module; 2. Processing module; 3. Compressor controller; 4. Alarm module; 5. Air circulation device. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application embodiment discloses a safety protection system for an inert gas compressor. Figure 1 , a safety protection system for an inert gas compressor comprises a monitoring module 1, a processing module 2, an alarm module 4 and a compressor controller 3;

[0036] Monitoring module 1 monitors the oxygen content of the environment of the machine room where the compressor is located and outputs an oxygen monitoring signal;

[0037] It should be noted that compressors are used to compress inert gases, including nitrogen (N2), argon (Ar), helium (He), neon (Ne) and xenon (Xe). These inert gases are mainly used in various industrial and scientific applications, such as food packaging, gas shielded welding, spectral analysis and laser technology. These inert gases are usually colorless and odorless. When the inert gas in the compressor leaks, a small amount of inert gas will not cause damage to the human body because the inert gas itself is non-toxic. However, the leakage of a large amount of inert gas will cause a decrease in the oxygen content in the machine room. At this time, if there are workers in the machine room where the compressor is located, it is easy to cause hypoxia for the workers.

[0038] It should be understood that the concentration of oxygen in the air is relatively constant, and the oxygen content in the air is about 21%. Therefore, when the oxygen content in the machine room decreases, an inert gas leak may have occurred, causing the inert gas to occupy the position of oxygen. Therefore, the inert gas leak can be detected by measuring the oxygen content. When the compressor compresses different inert gases, the oxygen content can be measured by the monitoring module 1 to detect whether the inert gas leaks, without the need to install corresponding detectors for different inert gases.

[0039] The processing module 2 is connected to the monitoring module 1, receives the oxygen monitoring signal, and outputs an abnormal warning signal based on the oxygen monitoring signal;

[0040] Specifically, different abnormal warning signals are output according to the oxygen content represented by the oxygen monitoring signal; for example, when the oxygen content represented by the oxygen monitoring signal is higher than the preset value, the processing module 2 outputs a low-level abnormal warning signal, and when the oxygen content represented by the oxygen monitoring signal is lower than the preset value, the processing module 2 outputs a high-level abnormal warning signal.

[0041] The compressor controller 3 is connected to the processing module 2 and controls the compressor to stop and output an alarm signal in response to the abnormal warning signal;

[0042] The alarm module 4 is connected to the compressor controller 3 and responds to the alarm signal to generate an alarm.

[0043] In the above embodiment, the monitoring module 1 is used to monitor the oxygen content of the computer room environment in real time to output an oxygen monitoring signal. If the processing module 2 detects that the oxygen content is lower than the preset value, it means that the inert gas has leaked, thereby reducing the oxygen content in the air. At this time, an abnormal warning signal is output to the compressor controller 3 to control the compressor controller 3 to stop in time to prevent further leakage of the inert gas, and then output an alarm signal to the alarm module 4, so that the alarm module 4 starts to alarm to prompt the surrounding staff to deal with it in time, thereby improving the safety of the operation of the inert gas compressor.

[0044] As an implementation of the alarm unit, the alarm module 4 includes a switch unit, a first alarm light and a second alarm light;

[0045] A switch unit, connected to the compressor controller 3, the first alarm light and the second alarm light, responding to the alarm signal to control the on and off of the first alarm light and the second alarm light;

[0046] The first alarm light is arranged in the machine room, and the second alarm light is arranged outside the machine room.

[0047] The first alarm light can be set near the compressor to remind nearby workers to stay away from the leakage source, and the second alarm light can be set in the supervision room or guardhouse outside the machine room so that supervisors can respond in time.

[0048] In the above embodiment, the switch unit is used to control the switches of the first alarm light and the second alarm light according to the alarm signal output by the compressor controller 3, and the first alarm light is set in the machine room to prompt the staff in the machine room to leave in time, and the second alarm light is set outside the machine room to prompt the corresponding maintenance personnel to repair the compressor failure in time.

[0049] As an implementation mode of the switch unit, the switch unit includes a single-contact relay; the common contact of the single-contact relay is connected to the negative pole of the first alarm light and the negative pole of the second alarm light, and the normally open contact of the single-contact relay is connected to the positive pole of the first alarm light and the positive pole of the second alarm light.

[0050] In the above implementation, a single-contact relay is used to facilitate synchronous control of the first warning light and the second warning light, and the circuit structure is simple and easy to control.

[0051] As another embodiment of the switch unit, the switch unit includes a multi-contact relay; the common contact of the multi-contact relay is connected to the negative pole of the first alarm light and the negative pole of the second alarm light, the first normally open contact of the multi-contact relay is connected to the positive pole of the first alarm light, and the second normally open contact of the multi-contact relay is connected to the positive pole of the second alarm light.

[0052] In the above embodiment, a multi-contact switch is used, and the first normally open contact and the second normally open contact are used to control the first warning light and the second warning light respectively, so as to realize the separate control of the first warning light and the second warning light.

[0053] It should be noted that the difference between the switch unit using a single-contact relay and a multi-contact relay is that when the single-contact relay controls the first alarm light and the second alarm light, it can only achieve synchronous control of the first alarm light and the second alarm light, that is, when the first alarm light is turned on, the second alarm light is also turned on, and when the first alarm light is turned off, the second alarm light is also turned off, and vice versa, and it is impossible to achieve separate control of the first alarm light and the second alarm light. When the multi-contact relay controls the first alarm light and the second alarm light, since the first alarm light and the second alarm light are connected to different contacts of the multi-contact relay, it is convenient to control the different on and off states of the first alarm light and the second alarm light, which is more flexible.

[0054] As an implementation manner of the monitoring module 1, the monitoring module 1 includes an oxygen content monitor, the oxygen content monitor is connected to the processing module 2, and the oxygen content monitor is arranged in a machine room where the compressor is installed.

[0055] In the above embodiment, when the inert gas leaks into the air, as the inert gas in the air increases, the oxygen content in the air will continue to decrease, so that the leakage of the inert gas can be easily monitored by using an oxygen content detector.

[0056] As an implementation of the processing module 2, the processing module 2 includes a PLC controller.

[0057] Among them, PLC (Programmable Logic Controller) is a special computer device used in automation control systems.

[0058] Specifically, the PLC controller includes an input module, a central processing unit (CPU) and an output module. The PLC input module is responsible for collecting the oxygen monitoring signal from the monitoring module 1. The oxygen monitoring signal is transmitted in the form of an analog signal. The central processing unit performs logical processing on the oxygen monitoring signal. The output module determines the operation to be performed according to the logical rules of the central processing unit and generates a corresponding abnormal warning signal.

[0059] In the above implementation, the PLC controller has programmable capabilities and can freely customize specific control schemes to achieve logical processing of oxygen monitoring signals.

[0060] As a further implementation of the safety protection system of the inert gas compressor, the safety protection system of the inert gas compressor also includes an air circulation device 5, which is connected to the processing module 2 and responds to the abnormal warning signal to start the replacement of the air in the machine room with the external environment air.

[0061] Specifically, as an implementation of the air circulation device 5, the air circulation device 5 includes an infrared transmitter and an air circulation machine;

[0062] An infrared transmitter, connected to the processing module 2, responds to the abnormal warning signal to output an infrared control signal;

[0063] The air cycle machine is activated in response to the infrared control signal.

[0064] In the above implementation, when an abnormal warning signal is detected, it indicates that the oxygen content in the air is low at this time. The infrared transmitter is used to control the air circulation machine to start, so that the air in the machine room circulates with the external environment, so that the environment in the machine room can return to normal.

[0065] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any feature disclosed in this specification (including abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A safety protection system for an inert gas compressor, characterized in that: It comprises a monitoring module (1), a processing module (2), an alarm module (4) and a compressor controller (3); The monitoring module (1) monitors the oxygen content of the environment of the machine room where the compressor is located and outputs an oxygen monitoring signal; The processing module (2) is connected to the monitoring module (1), receives the oxygen monitoring signal, and outputs an abnormal warning signal based on the oxygen monitoring signal; The compressor controller (3) is connected to the processing module (2), and controls the compressor to stop and outputs an alarm signal in response to the abnormal warning signal; The alarm module (4) is connected to the compressor controller (3) and responds to the alarm signal to generate an alarm.

2. The safety protection system for an inert gas compressor according to claim 1, characterized in that: The alarm module (4) comprises a switch unit, a first alarm light and a second alarm light; The switch unit is connected to the compressor controller (3), the first alarm light and the second alarm light, and controls the on and off of the first alarm light and the second alarm light in response to the alarm signal; The first alarm light is arranged in the machine room, and the second alarm light is arranged outside the machine room.

3. The safety protection system for an inert gas compressor according to claim 2, characterized in that: The switch unit comprises a single-contact relay; a common contact of the single-contact relay is connected to the cathode of the first warning light and the cathode of the second warning light, and a normally open contact of the single-contact relay is connected to the anode of the first warning light and the anode of the second warning light.

4. The safety protection system for an inert gas compressor according to claim 2, characterized in that: The switch unit includes a multi-contact relay; the common contact of the multi-contact relay is connected to the negative pole of the first alarm light and the negative pole of the second alarm light, the first normally open contact of the multi-contact relay is connected to the positive pole of the first alarm light, and the second normally open contact of the multi-contact relay is connected to the positive pole of the second alarm light.

5. The safety protection system for an inert gas compressor according to claim 1, characterized in that: The monitoring module (1) comprises an oxygen content monitor, which is connected to the processing module (2) and is arranged in a machine room where a compressor is installed.

6. The safety protection system for an inert gas compressor according to claim 1, characterized in that: The processing module (2) comprises a PLC controller.

7. The safety protection system for an inert gas compressor according to claim 1, characterized in that: It also comprises an air circulation device (5), which is connected to the processing module (2) and responds to an abnormal warning signal to start replacing the air in the machine room with the air in the external environment.

8. The safety protection system for an inert gas compressor according to claim 7, characterized in that: The air circulation device (5) comprises an infrared emitter and an air circulation machine; The infrared transmitter is connected to the processing module (2) and responds to the abnormal warning signal to output an infrared control signal; The air cycle machine is started in response to an infrared control signal.

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