Low-temperature leakage detecting liquid used for air tightness detection of liquid propellant storage and transportation device
A technology of air tightness inspection and liquid propellant, which is applied in the direction of using liquid/vacuum to measure liquid tightness and detecting the appearance of fluid at the leak point, and can solve the problems affecting the reliability of air tightness inspection and liquid propellant Potential safety hazards, no patents or literature reports, etc., to avoid icing, improve safety factor and work efficiency, and ensure safety
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Embodiment 1
[0055] Measure or weigh: 500ml of water, 500ml of ethylene glycol, 60ml of octylphenol polyoxyethylene ether, 11g of sodium dodecylsulfonate and 6g of disodium hydrogen phosphate;
[0056] Add ethylene glycol, octanylphenol polyoxyethylene ether, sodium dodecylsulfonate, water, and disodium hydrogen phosphate in turn into the container, and stir until uniform while adding to prepare a low-temperature leak detection liquid;
[0057] When in use, stir with a brush, and after foaming, apply the foam to the parts that need leak detection; the low-temperature leak detection solution prepared in this example can be used in an environment of -30°C to -21°C, with strong foaming ability and no freezing .
Embodiment 2
[0059] Measure or weigh: 500 milliliters of water, 500 milliliters of ethylene glycol, 50 milliliters of octylphenol polyoxyethylene ether, 15 grams of sodium dodecylsulfonate and 10 grams of disodium hydrogen phosphate; the rest are the same as in Example 1.
Embodiment 3
[0061] Measure or weigh: 300ml of water, 700ml of ethanol, 70ml of phenylethylphenol polyoxyethylene ether, 8.6g of sodium dodecylsulfonate and 4.3g of disodium hydrogen phosphate;
[0062] Add ethanol, octylphenol polyoxyethylene ether, sodium dodecylsulfonate, water, and disodium hydrogen phosphate sequentially into the container, and stir until uniform while adding to prepare a low-temperature leak detection liquid; Low temperature leak detection fluid can be used in the environment of -40℃~-31℃, with strong foaming ability and no freezing.
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