Refrigerating system and purification method for the same
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Solution Overview
Problem
The transportation of large-scale refrigeration equipment faces challenges with refrigerant leakage and equipment erosion due to atmospheric moisture permeation, and existing methods for separating pressure maintaining gases from refrigerants are inefficient and costly, requiring complex operational processes and higher material costs.
Innovation Solution
A refrigerating system design with a purification loop that includes a low-temperature separator, connected to the refrigerating loop from the highest position, allowing for efficient separation and discharge of pressure maintaining gases, reducing material and labor costs, and preventing equipment erosion during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure maintaining gas is charged into the refrigeration equipment before transportation, then equipment erosion is prevented, but gas separation and discharge becomes complex and costly
Solution Approach 1:
The system divides the refrigeration circuit into multiple circulation loops, each with independent expansion valves and controllable flow paths. This segmentation allows selective access to different parts of the system for gas separation operations without affecting the entire system, simplifying the gas discharge process while maintaining erosion prevention benefits.
Solution Approach 2:
A dedicated gas separation device is introduced as an intermediary component between the refrigeration circuit and the environment. This device provides a controlled interface for separating and discharging pressure maintaining gas, eliminating the need for complex manual operations and reducing costs while preserving the protective function.
2Reliability
If pressure maintaining gas is charged into the refrigeration equipment, then transportation safety is improved, but operational costs and material purchasing costs increase
Solution Approach 1:
The system enables recovery and recycling of pressure maintaining gas through the gas separation device. Instead of discarding the gas after use, it can be separated, purified, and reused in subsequent operations, significantly reducing material purchasing costs while maintaining transportation safety benefits.
Solution Approach 2:
The gas separation and discharge functionality is built into the system design from the beginning, allowing for efficient gas management during transportation. This preliminary preparation eliminates the need for costly post-transportation gas removal operations and reduces overall operational costs.
3Quantity of substance
If purification equipment is connected to the refrigerating system, then gas separation capability is improved, but system complexity and connection optimization requirements increase
Solution Approach 1:
The gas separation device is integrated with the existing refrigeration circuit components, merging its functionality with the circulation loops. This combination eliminates the need for separate complex connection arrangements and simplifies the overall system architecture while maintaining effective gas separation capability.
Solution Approach 2:
The purification equipment is designed to work with multiple types of refrigeration systems and different gas separation scenarios. Its universal design allows it to be connected to various circuit configurations without requiring complex optimization, reducing installation and operational complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents refrigerant leakage and equipment erosion during transportation, reduces operational complexity, and ensures safe and efficient startup of the refrigeration system by optimizing the connection between the refrigerating and purification loops, thereby controlling costs and ensuring reliable separation of refrigerants and pressure maintaining gases.
Implementation Method 1
a low-temperature separator, comprising an inlet, a refrigerant outlet and a pressure maintaining gas outlet
Implementation Method 2
a purification condenser
Implementation Method 3
an expansion valve
Data Source
Figure 1~2
AI summary
The present invention provides a refrigerating system, including: a refrigerating loop, including a compressor, a condenser, a throttling element, and an evaporator that are connected in sequence through a pipeline; and a purification loop, connected to the refrigerating loop and configured to separate a pressure maintaining gas in the refrigerating loop; wherein the refrigerating loop is connected into the purification loop from the top of the condenser or the top of the compressor. The present invention further provides a purification method for a refrigerating system, including: in a first time period, performing S1: charging, into the refrigerating system, a refrigerant that satisfies a designed refrigerating capacity; and S2: charging a pressure maintaining gas into the refrigerating system, so that pressure in the refrigerating system is higher than atmospheric pressure; and in a second time period, performing S3: separating and discharging the pressure maintaining gas in the refrigerating system.