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Detection device and detection method for sealing performances of expansion tanks

A technology of leak detection and expansion tank, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, can solve problems such as equipment damage and poor sealing performance, and reduce thermal cracking Tendency, no hot cracking tendency, the effect of improving the corrosion resistance of the alloy

Active Publication Date: 2014-12-10
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the sealing performance of the expansion tank is very important. If the air bag of the expansion tank leaks, that is, the sealing performance is not good, and the equipment will be damaged due to excessive pressure or unstable water pressure. performance equipment

Method used

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  • Detection device and detection method for sealing performances of expansion tanks
  • Detection device and detection method for sealing performances of expansion tanks
  • Detection device and detection method for sealing performances of expansion tanks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Batching: according to the mass percentage batching of each constituent element composition described in the frame in the expansion tank sealing test equipment of the embodiment 1 of Table 1;

[0046] Melting: Melt the above ingredients at 730°C to form molten aluminum, stir evenly and perform degassing first, then use C 2 Cl 6 The refining agent is used for refining treatment, the refining treatment temperature is 710°C, the refining time is 9 minutes, and it is left to stand for 10 minutes after refining; then the ternary or quaternary sodium salt modification agent is used for modification treatment, the modification treatment temperature is 710 °C, and the modification time is 18 minutes ;

[0047] Molding: pour the aluminum liquid after the above treatment in the mold to obtain the frame blank, the pouring temperature is 690°C, the mold temperature is 300°C, and the mold opening time is 200s;

[0048] Heat treatment: Carry out heat treatment on the poured frame b...

Embodiment 2

[0050] Batching: batching according to the mass percentage of each component element composition described in the rack in the expansion tank sealing test equipment in Example 2 of Table 1;

[0051] Melting: Melt the above ingredients at 720°C to form molten aluminum, stir evenly and perform degassing first, then use C 2 Cl 6 The refining agent is used for refining treatment, the refining treatment temperature is 720 ° C, the refining time is 8 minutes, and it is left to stand for 12 minutes after refining; then the ternary or quaternary sodium salt modification agent is used for modification treatment, the modification treatment temperature is 720 ° C, and the modification time is 15 minutes ;

[0052] Molding: pour the aluminum liquid after the above treatment in the mold to obtain the frame blank, the pouring temperature is 680°C, the mold temperature is 320°C, and the mold opening time is 220s;

[0053] Heat treatment: Carry out heat treatment on the poured frame blank. H...

Embodiment 3

[0055] Batching: according to the mass percentage batching of each constituent element composition described in the frame in the expansion tank sealing test equipment of the embodiment 3 of Table 1;

[0056] Melting: Melt the above ingredients into aluminum liquid at 740°C, stir evenly and degas first, then use C 2 Cl 6 The refining agent is used for refining treatment, the refining treatment temperature is 700°C, the refining time is 10 minutes, and it is left to stand for 8 minutes after refining; then the ternary or quaternary sodium salt modification agent is used for modification treatment, the modification treatment temperature is 700 °C, and the modification time is 20 minutes ;

[0057] Molding: pour the aluminum liquid after the above treatment in the mold to obtain the frame blank, the pouring temperature is 700°C, the mold temperature is 280°C, and the mold opening time is 180s;

[0058] Heat treatment: Carry out heat treatment on the poured frame blank. Heat trea...

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Abstract

The invention belongs to the technical field of detection machines, and particularly relates to a detection device and a detection method for the sealing performances of expansion tanks. The detection device comprises a plurality of expansion tanks to be detected, a rack, a clamp device and a water inlet device, wherein the rack is made of an aluminium alloy material, and the rack comprises the following composition elements in the following percentages by mass: 1.00-1.50% of Si, 0.50-1.00% of Mg, 0.10-0.20% of Fe, 0.05-0.08% of Cu, 0.02-0.07% of Zn, 0.08-0.12% of Mn, 0.02-0.06% of Ni, 0.05-0.10% of Sb, 0.12-0.15% of Ti, not greater than 0.025% of single impurity elements in other impurity elements, not greater than 0.1% of total impurity elements, and the balance of aluminium. The device is high in detection accuracy level and detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of detection machinery, and in particular relates to an expansion tank sealing performance detection device and a detection method thereof. Background technique [0002] Expansion water tank is an important part of hot water heating system and central air-conditioning water system. Its function is to accommodate and compensate the expansion and contraction of water in the system. It is widely used in central air-conditioning, boilers, water heaters, frequency conversion, constant pressure water supply and other equipment. Among them, it can buffer the fluctuation of the system pressure and play the role of stabilizing the pressure and unloading. When the water pressure in the system changes slightly, the automatic expansion and contraction of the airbag of the expansion tank will have a certain buffering effect on the change of the water pressure, which can ensure the stability of the system. The water press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
Inventor 陈晓平胡如夫盛汉姣彭宏达赵晶邱敏
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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