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Explosion protection system of refrigerating equipment adopting combustible refrigerant and safety design method

A technology of refrigeration equipment and explosion-proof system, which is applied in refrigeration safety arrangements, refrigeration and liquefaction, refrigerators, etc.

Pending Publication Date: 2020-07-28
广州东弛自动化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors found that most of the refrigerating equipment using flammable refrigerants still adopt the traditional design method at present, and no design measures have been taken to address the hidden danger of flammable refrigerant leakage, and there is no unified safety standard to guide the design, resulting in various The equipment is uneven, good and bad are not distinguished, which has a very large safety hazard in actual use, and safety accidents occur frequently

Method used

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  • Explosion protection system of refrigerating equipment adopting combustible refrigerant and safety design method
  • Explosion protection system of refrigerating equipment adopting combustible refrigerant and safety design method
  • Explosion protection system of refrigerating equipment adopting combustible refrigerant and safety design method

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Embodiment 1

[0032] Such as Figure 1~4 As shown, this embodiment provides an explosion-proof system for refrigeration equipment using flammable refrigerants, including a negative pressure isolation exhaust system 2 connected to an electrical control system 1, a positive pressure explosion-proof system 3 for an electrical junction box, and an active detection and alarm system 4;

[0033] The negative pressure isolation exhaust system 2 includes an isolation room 21, a negative pressure exhaust assembly and a forced exhaust assembly. The refrigeration equipment body 5 containing flammable refrigerant is placed in the isolation room 21, and the negative pressure exhaust assembly controls the exhaust of the isolation room 21. The air volume is greater than the air intake volume of the isolation room 21;

[0034] The electrical junction box positive pressure explosion-proof system 3 includes an explosion-proof junction box 31 and a positive pressure explosion-proof system. The device and the...

Embodiment 2

[0051] This embodiment provides a safety design method for refrigeration equipment using flammable refrigerants. The refrigeration equipment body 5 containing flammable refrigerants is placed in the isolation room 21, and the exhaust air volume of the isolation room 21 is greater than the air intake volume of the isolation room 21; The irreplaceable non-explosion-proof electrical components on the refrigeration equipment body 5 are arranged in the explosion-proof junction box 31, and the pressure inside the explosion-proof junction box 31 is greater than the external pressure; multiple detection points are set near the possible leakage points on the refrigeration equipment body 5 , when the gas trap 41 captures the leaked flammable refrigerant gas, the flammable refrigerant gas detection and alarm device 44 starts the audible and visual alarm and starts the forced exhaust assembly.

[0052] The refrigeration equipment body 5 containing flammable refrigerant in the present inven...

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Abstract

The invention belongs to the technical field of refrigerating equipment and particularly relates to an explosion protection system of refrigerating equipment adopting a combustible refrigerant and a safety design method. The explosion protection system comprises a negative pressure isolation exhaust system, an electrical junction box positive pressure explosion protection system and an active detection alarm system connected with an electrical control system separately. The refrigerating equipment body containing the combustible refrigerant is in the negative pressure environment; in the caseof leakage, the combustible refrigerant is discharged outdoors according to the assigned flow direction and a passage to rapidly reduce the concentration of the combustible refrigerant gas near the refrigerating equipment body; a non-explosion-proof testing instrument or a sensor stayed in an anti-explosion area is arranged in the positive pressure environment to effectively prevent the leaking combustible refrigerant from being in contact with an ignition source; and a plurality of monitoring points are arranged at the pipes possibly leaking of the refrigerating equipment body to actively monitor the concentration of the combustible refrigerant gas near the refrigerating equipment body in real time, and when the concentration is abnormal, sound-light alarm is timely sent out and a forcingexhaust system is started.

Description

technical field [0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to an explosion-proof system and a safety design method of refrigeration equipment using flammable refrigerants. Background technique [0002] At present, under the background of protecting the ozone layer and curbing global warming, many research institutions in the world have begun to replace traditional refrigerants with environmentally friendly hydrocarbon refrigerants, and this trend is constantly expanding, but at present Many environmentally friendly hydrocarbon refrigerants are flammable and explosive, such as R600a, R290, R32, R1234YF, R1270, etc. In the case of leakage, the flammable and explosive characteristics are the most fatal shortcoming of hydrocarbon refrigerants . [0003] The degree of flammability of hydrocarbon refrigerants is primarily classified based on their respective flammability parameters such as burning velocity, lower expl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02A62C3/06G08B21/16E04B1/92E04H5/00
CPCF25B49/02A62C3/06G08B21/16E04B1/92E04H5/00F25B2500/22
Inventor 向涵丰
Owner 广州东弛自动化设备有限公司
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