一种基于耦合LNG冷能回收的二氧化碳储能模块
By coupling LNG cold energy recovery with carbon dioxide energy storage and using the central control cabinet to control the storage tank parameters, the high energy consumption and safety issues of the carbon dioxide energy storage system are solved, realizing the resource utilization of cold energy and natural gas and improving system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing carbon dioxide energy storage systems have high cooling energy consumption, and the independent operation of LNG cold energy recovery results in low cold energy utilization. The system has poor coupling and lacks linkage safety protection for storage tank pressure and temperature control, which affects operational stability and safety.
By coupling LNG cold energy recovery with carbon dioxide energy storage, carbon dioxide liquefaction is achieved using LNG cold energy. Combined with the linkage and control of the main control cabinet and temperature sensors, pressure sensors, pressure regulating valves, solenoid valves and safety valves, a closed-loop carbon dioxide circulation is constructed to improve the safety and stability of the system.
Reduce cooling energy consumption, realize the dual resource utilization of cold energy and natural gas, improve system safety and stability, avoid failures caused by parameter fluctuations, and improve energy utilization efficiency.
Smart Images
Figure CN224517163U_ABST
Abstract
Claims
1. A carbon dioxide energy storage module based on coupled LNG cold energy recovery, characterized in that, Comprising: A gaseous carbon dioxide storage tank (1), on one side of the gaseous carbon dioxide storage tank (1) there is a main control cabinet (12), the outer wall of the gaseous carbon dioxide storage tank (1) is connected with a check valve (2) through a pipeline, and the outer wall of the check valve (2) is fixedly connected with a compressor unit (3) through a pipeline; The outer wall of the outlet end of the compressor unit (3) is fixedly connected with a pressure stabilizing valve (4) through a pipeline, the outer wall of the pressure stabilizing valve (4) is fixedly connected with a two-way solenoid valve (5) through a pipeline, and there is a heat exchange device (6) on the outer wall of the two-way solenoid valve (5); on one side of the heat exchange device (6) there is an LNG storage tank (7).
2. The carbon dioxide energy storage module based on coupled LNG cold energy recovery according to claim 1, characterized in that: The heat exchange device (6) includes a circulation cylinder (60), the outer wall of the circulation cylinder (60) is fixedly connected with a circulation pipe (61), and the inner wall of the circulation cylinder (60) is fixedly connected with a heat exchange pipe (62).
3. The carbon dioxide energy storage module based on coupled LNG cold energy recovery of claim 2, wherein: The circulation cylinder (60) is filled with a heat exchange medium, the outer wall of the circulation pipe (61) is connected with an external circulation system for circulating the heat exchange medium, the outer walls of the heat exchange pipes (62) are respectively fixedly connected with the outer wall of the two-way solenoid valve (5) and the outer wall of the LNG storage tank (7) through pipelines, and the outer wall of the end of the heat exchange pipe (62) far from the LNG storage tank (7) is connected with a natural gas using device through a pipeline.
4. The carbon dioxide energy storage module based on coupled LNG cold energy recovery of claim 3, characterized in that: The outer wall of the end of the heat exchange pipe (62) far from the two-way solenoid valve (5) is fixedly connected with a high-pressure liquid carbon dioxide storage tank (8), and the outer wall of the high-pressure liquid carbon dioxide storage tank (8) is fixedly connected with the heat exchange pipe (62) through a pipeline.
5. The carbon dioxide energy storage module based on coupled LNG cold energy recovery of claim 4, wherein: The outer wall of the outlet end of the heat exchange pipe (62) is fixedly connected with an expansion generator (9), the outer wall of the outlet end of the expansion generator (9) is fixedly connected with the heat exchange pipe (62), and the outer wall of the heat exchange pipe (62) is fixedly connected with a low-pressure liquid carbon dioxide storage tank (10) through a pipeline.
6. The carbon dioxide energy storage module based on coupled LNG cold energy recovery of claim 5, wherein: The outer wall of the low-pressure liquid carbon dioxide storage tank (10) is fixedly connected with the heat exchange pipe (62), the outer wall of the outlet end of the heat exchange pipe (62) is fixedly connected with a booster pump (11), and the outer wall of the outlet end of the booster pump (11) is fixedly connected with the gaseous carbon dioxide storage tank (1) through a pipeline.
7. The carbon dioxide energy storage module based on coupled LNG cold energy recovery of claim 1, wherein: The outer wall of the main control cabinet (12) is line-connected with the outer walls of the gaseous carbon dioxide storage tank (1), the compressor unit (3), the pressure stabilizing valve (4), the two-way solenoid valve (5), the LNG storage tank (7), the high-pressure liquid carbon dioxide storage tank (8), the expansion generator (9), the low-pressure liquid carbon dioxide storage tank (10) and the booster pump (11).