In 2026, the liquid cooling industry is entering a critical stage of large-scale implementation.
As technologies represented by NVIDIA's new generation of high-power computing platforms continue to advance, and cloud computing manufacturers' demand for high-density computing power deployment grows, the power density of single cabinets continues to increase. Traditional air cooling faces obvious engineering bottlenecks in high power density scenarios; at the same time, large-scale data centers are newly built in China PUE ≤ 1.15 's policy requires further tightening of energy efficiency constraints, making liquid cooling technology gradually evolve from an "optional solution" for computing power infrastructure to a rigid configuration in high computing power scenarios.
However, during the advancement of a large number of projects, a reality that has been repeatedly verified is emerging: the real risk points of liquid cooling systems are often not"heat dissipation capacity", while in"Sealing Reliability"。
From prototype to mass production,
What real challenges are liquid-cooled seals encountering?
Unlike traditional air cooling, the inside of the liquid cooling system is in a long-termUnder pressure, circulation, thermal expansion and contractionUnder complicated working conditions, once the sealing problem is exposed, the consequences will be extremely destructive - coolant leakage may cause motherboard corrosion, short circuit or even the entire cabinet downtime in a short period of time. A single point of failure is a high loss.
Therefore, for liquid cooling to truly move toward scale, a core question cannot be avoided: Has an engineering-level and mass-production-level sealing testing system been established?
Part.1
Full-process sealing testing solution
At present, the difficulty of liquid cooling detection has also increased significantly. On the one hand, detection is required at 0.5-3MPa or even higher pressure; on the other hand, the allowable leakage rate has been continuously compressed to 10-5 mbar·L/s magnitude.
Focusing on the actual needs of the liquid cooling industry chain from components to system integration, Hirays has completed program docking and project implementation with a number of leading customers in the liquid cooling industry, forming a set of standardized testing solutions that can be directly delivered, covering the three levels of components, components, and systems.
1 Liquid cooling component sealing inspection
——High voltage, high precision, and support automated mass production
▲Helium inspection and sniffing testing equipment for parts
Detection objects:Core components such as quick connectors, cold plates/liquid cooling plates, distribution manifolds, and welding parts.
Core technical requirements:
Test pressure: 0.5–3MPa (Hiris technical solution can support up to 5 MPa)
Detection sensitivity: ≤10-13 Pa·m³/s
Detection rate requirement: 100%
Solution:
use The HM-400/410 helium mass spectrometry leak detection system can detect micro-leakage in vacuum brazed components and accurately locate welds and material defects. With the sniffer and sniffing modes, it can accurately find leak points, eliminate hidden dangers in a timely manner during the production stage, and ensure product sealing reliability.
▲Helium detection (collection method) test platform
Among them, the helium inspection solution can be deeply integrated with automatic loading and unloading, automatic sealing, automatic filling and exhausting, automatic judgment and data traceability, and supports seamless integration with customers' existing production lines and MES systems to meet batch consistency and rhythm requirements.
▲Automated testing equipment for parts (quick connectors)
This solution has been running stably in liquid-cooling component mass production projects, helping customers achieve standard inspection processes with high consistency and low misjudgment rates under high-pressure conditions.
2 Liquid cooling component seal detection
——The large space inside the product causes the detection cavity to become larger, but the sensitivity cannot be low!
▲Component helium inspection sniffing and testing equipment
Detection objects:For liquid cooling components assembled from multiple components, the focus is on the connection between components; in order to save costs and improve efficiency, this location is sometimes also the first inspection location for multiple components.
Solution:
use The HM-400/410 helium mass spectrometer leak detector detects micro-leakage at the connections between liquid cooling components and components, and uses its sniffing mode with a sniffer gun to accurately locate leaks, effectively ensuring the sealing reliability of liquid cooling components under harsh working conditions, significantly reducing the risk of coolant leakage, and improving the safety, stability, and operation and maintenance efficiency of data center liquid cooling systems.
▲Helium detection system for liquid cooling components
This combined solution has been put into use by many customers as a standard station for component off-line inspection, achieving a good balance between efficiency and accuracy.
3 Liquid cooling system inspection
——Guarantee the operation of the whole cabinet and the whole system
Detection objects:A complete liquid cooling system composed of multiple components, focusing on system interfaces and long-term stability.
Solution:
Precise inspection:use HM-400/410 helium mass spectrometer leak detector accurately detects micro leaks and ensures the reliability of system sealing.
Leak point location:enable The sniffing mode of HM-400/410 can be used with the sniffer gun to quickly and accurately locate leaks.This method is easy to operate and can be flexibly adapted to various on-site working conditions.
Customized system:As a key quality control link to ensure the safe, stable and efficient operation of the system, Hirays can provide a full range of customized (including tooling, fixtures) and modular helium inspection equipment solutions.
Part.2
Why customers are choosing Haris
Hiraysi has been deeply involved in the field of air tightness testing for nearly 20 years, with profound technology accumulation and significant solution advantages:
1 Already “really doing it” in the industry
Hirays has connected with leading customers in the liquid cooling industry and delivered solutions, with mature cases from prototype to mass production.
2Standardized instruments + engineering solutions
From the overall delivery of the instrument host, test platform to sealing fixture, it supports multi-channel parallel testing and can be quickly copied to different production lines.
3 Technical capabilities cover all liquid cooling scenarios
200+ core patents
3000+ mature solutions
Detection accuracy coverage 10⁻¹ to 10⁻¹³ Pa·m³/s
4Local service, close to the production line
From preliminary verification, prototype trial, to installation and debugging, training and maintenance, the whole process of localized support ensures that the solution is truly "implemented and usable".
Application cases
⬆ Helium testing platform for water-cooled die castings
⬆ Bellows helium detection test platform
Conclusion
In the era of computing power, liquid cooling is the foundation and sealing is the bottom line.
When liquid cooling moves from "usable" to "large-scale, long-term stable operation", what truly determines the reliability of the system is not just the design of the cold plate and flow channel, but whether every connection point and every sealing test can withstand the test of time and pressure.
Haris will continue to use engineering-grade sealing testing solutions to move forward side by side with partners in the liquid cooling industry to build an invisible but most critical line of defense for computing infrastructure.
