Inert gas protection system for closed circulation system
The inert gas protection system solves the safety problem of closed-loop systems, enables real-time monitoring and replacement of inert gases, and improves the safety and ease of operation of the system.
Patent Information
- Application Number
- CN202422613989.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The safety protection of existing closed-loop systems relies solely on pressure protection and flame arresters, which can easily lead to explosions. More comprehensive safety protection devices are needed.
An inert gas protection system is adopted, which connects to the inert gas inlet pipe through the inert gas interface and the exhaust port. The mixed gas is discharged after passing through the flame arrester, and the oxygen content is monitored in real time by the exhaust oxygen content detection unit to control the opening and closing of the inert gas valve and the exhaust valve. The flow rate is monitored in real time by the gas flow meter.
It improves the safety of the closed-loop system, replaces the combustion-supporting material with inert gas to prevent explosion, and monitors the gas flow rate in real time, making it easy to operate.
Smart Images
Figure CN223453626U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of inert gas protection systems for closed circulation system, belong to chemical and pharmaceutical equipment technical field. BACKGROUND
[0002] At present, the safety protection of closed circulation system only relies on the cooperation use of pressure protection and flame arrestor. Combustion-supporting material in the closed circulation system is easy to cause explosion. With the increasing importance of system safety issues, more perfect and safe system protection devices are needed. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide an inert gas protection system for closed circulation system, to improve system safety, and to monitor inert gas flow in real time.
[0004] The utility model discloses the technical scheme adopted to solve the above problems: an inert gas protection system for closed circulation system, comprising a closed circulation system, the closed circulation system is equipped with inert gas interface and exhaust port, the inert gas interface is connected with inert gas inlet pipe, the inert gas inlet pipe is equipped with inert gas valve, the inert gas valve is opened, so that inert gas flows into closed circulation system, inert gas is mixed with combustion-supporting material in closed circulation system, to form mixed gas;The exhaust port is connected with exhaust pipeline, the exhaust pipeline is equipped with exhaust valve and flame arrester, the exhaust valve is opened, and the mixed gas is discharged after the exhaust pipeline and the flame arrester;It is also equipped with exhaust oxygen content detection unit, the exhaust oxygen content detection unit is arranged in parallel with the exhaust pipeline, the exhaust oxygen content detection unit is signal connected with inert gas valve and exhaust valve, the exhaust oxygen content detection unit detects the oxygen content in the discharged mixed gas, and then controls inert gas valve and exhaust valve to open or close.
[0005] The exhaust oxygen content detection unit comprises a detection pipeline, a fan, a filtering device and an oxygen content analyzer are sequentially arranged on the detection pipeline, and the oxygen content analyzer is arranged on the outlet side of the filtering device.
[0006] The inert gas inlet pipe is also equipped with a gas flowmeter, and the gas flowmeter is used to monitor the flow of inert gas in real time.
[0007] Two pressure relief pipelines are also provided, and the two pressure relief pipelines are connected in parallel with the exhaust pipeline, a pressure relief valve is arranged on one of the pressure relief pipelines, and a safety valve is arranged on the other pressure relief valve, a pressure detector is arranged on the exhaust port side, and the pressure detector is used to detect the pressure of the discharged mixed gas;The pressure detector is signal connected with the pressure relief valve and the safety valve.
[0008] A pressure maintaining pipeline is connected in parallel to the inert gas inlet pipe, and a pressure maintaining valve is provided on the pressure maintaining pipeline.
[0009] Compared with the existing technology, the advantages of the utility model are: a closed circulation system uses an inert gas to protect the system, which is easy to operate. The inert gas is introduced into the closed circulation system, so that the inert gas replaces the combustion-supporting materials in the closed circulation system, greatly improving the safety of the system; while protecting the system, the gas flow meter can monitor the inert gas flow in real time. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of an inert gas protection system for a closed circulation system according to an embodiment of the present utility model;
[0011] In the figure, 1 is the inert gas inlet pipe, 2 is the inert gas valve, 3 is the gas flow meter, 4 is the pressure maintaining valve, 5 is the closed circulation system, 6 is the pressure detector, 7 is the exhaust valve, 8 is the flame arrester, 9 is the filter device, 10 is the oxygen content analyzer, 11 is the pressure relief pipeline, 12 is the pressure relief valve, 13 is the safety valve, 14 is the fan, and 15 is the detection pipeline. DETAILED DESCRIPTION
[0012] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0013] like Figure 1 As shown in the figure, an inert gas protection system for a closed circulation system in this embodiment includes a closed circulation system 5, which is provided with an inert gas interface and an exhaust port. The inert gas interface is connected to an inert gas inlet pipe 1, which is provided with an inert gas valve 2 and a gas flowmeter 3. When the inert gas valve 2 is opened, inert gas flows into the closed circulation system, where it mixes with the combustion-supporting materials within the closed circulation system to form a mixed gas. The gas flowmeter 3 is used to monitor the flow rate of inert gas replenishment in real time. The exhaust port is connected to an exhaust pipeline, which is provided with an exhaust valve 7. A flame arrester 8 is provided at the outlet of the exhaust pipeline. When the exhaust valve 7 is opened, the mixed gas is discharged through the exhaust pipeline and the flame arrester 8. An exhaust oxygen content detection unit is also provided. The exhaust oxygen content detection unit is arranged in parallel with the exhaust pipeline and is signal-connected to the inert gas valve 2 and the exhaust valve 7. The exhaust oxygen content detection unit detects the oxygen content in the discharged mixed gas. When the oxygen content in the mixed gas is higher than the set value, it means that the combustion-supporting material in the closed circulation system has not been replaced, and the inert gas valve 2 and the exhaust valve 7 are opened; when the oxygen content in the mixed gas is lower than the set value, it means that the combustion-supporting material in the closed circulation system has been replaced, and the inert gas valve 2 and the exhaust valve 7 are closed.
[0014] The exhaust detection unit comprises a detection pipeline 15 which is arranged in parallel with the exhaust pipeline. The exhaust pipeline is sequentially provided with a fan 14, a filtering device 9 and an oxygen content analyzer 10. The fan 14 sucks a small amount of mixed gas into the detection pipeline 15, and the mixed gas is filtered by the filtering device 9 and then flows to the oxygen content analyzer 10. The oxygen content analyzer 10 detects the oxygen content of the filtered mixed gas, and then determines whether the combustion-supporting material in the closed circulation system is replaced clean.
[0015] Two pressure relief pipelines 11 are further arranged in parallel with the exhaust pipeline. One pressure relief pipeline 11 is provided with a pressure relief valve 12, and the other pressure relief pipeline 11 is provided with a safety valve 13. A pressure detector 6 is arranged at the exhaust port, and is used for detecting the pressure of the mixed gas discharged from the exhaust port. The pressure detector 6 is signal connected with the pressure relief valve 12 and the safety valve 13. When the pressure of the mixed gas at the exhaust port exceeds the limit, the pressure relief valve 12 or the safety valve 13 is opened, so that the pressure in the closed circulation system will not exceed the limit.
[0016] The closed circulation system can be a closed tank, a closed pipeline and a closed equipment and the like.
[0017] The filtering device is a gas washing tank.
[0018] A pressure maintaining pipeline is arranged in parallel with the inert gas inlet pipeline, and the pressure maintaining pipeline is provided with a pressure maintaining valve 4. When the replacement is completed, the inert gas inlet valve is closed, and the pressure maintaining valve is opened. The pressure in the closed circulation system will be lost to some extent. The pressure maintaining valve can introduce a small amount of inert gas, so as to supplement the pressure in the closed circulation system.
[0019] The application is convenient to operate. The inert gas is introduced into the closed circulation system, so that the inert gas replaces the combustion-supporting material in the closed circulation system, and the safety of the system is greatly improved. While the system is protected, the gas flow meter can monitor the inert gas flow in real time.
[0020] In addition to the above-mentioned embodiments, the utility model also includes other implementation manners. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the utility model claim.
Claims
1. An inert gas protection system for a closed cycle system, characterized by: The application relates to a closed circulation system provided with an inert gas interface and an exhaust port, wherein the inert gas interface is connected with an inert gas inlet pipe provided with an inert gas valve; the inert gas valve is opened to make the inert gas flow into the closed circulation system, the inert gas is mixed with the combustion-supporting material in the closed circulation system to form mixed gas; the exhaust port is connected with an exhaust pipeline provided with an exhaust valve and a flame arrester; the exhaust valve is opened to make the mixed gas flow out through the exhaust pipeline and the flame arrester; an exhaust oxygen content detection unit is further arranged in parallel with the exhaust pipeline; the exhaust oxygen content detection unit is connected with the inert gas valve and the exhaust valve; the exhaust oxygen content detection unit detects the oxygen content in the discharged mixed gas to control the opening and closing of the inert gas valve and the exhaust valve.
2. The inert gas protection system for a closed cycle system according to claim 1, characterized in that: The exhaust oxygen content detection unit comprises a detection pipeline provided with a fan, a filtering device and an oxygen content analyzer in sequence; the oxygen content analyzer is arranged on the outlet side of the filtering device.
3. The inert gas protection system for a closed loop system according to claim 1, wherein: The inert gas inlet pipe is further provided with a gas flow meter for monitoring the flow of the inert gas in real time.
4. The inert gas protection system for a closed loop system according to claim 1, wherein: Two pressure relief pipelines are further arranged in parallel with the exhaust pipeline; one of the pressure relief pipelines is provided with a pressure relief valve; the other pressure relief pipeline is provided with a safety valve; a pressure detector is arranged on the exhaust port side for detecting the pressure of the discharged mixed gas; the pressure detector is connected with the pressure relief valve and the safety valve.
5. The inert gas protection system for a closed cycle system according to claim 1, characterized in that: The inert gas inlet pipe is further provided with a pressure maintaining pipeline arranged in parallel; the pressure maintaining pipeline is provided with a pressure maintaining valve.