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What is the situation when the natural gas safety valve keeps self sucking?
What is the situation when the natural gas safety valve keeps pulling in? Check the following:1. Try changing two batteries. If the battery power is not enough, the electromagnet will attract oil and not keep, which is what you mean. Adjust the damper to make the middle fire panel burn. The natural gas valve is a quick-closing electromagnetic valve, usually connected to a gas detector. When gas leaks, it will quickly close to cut off gas supply (at this time, the reset lever will drop). Once the danger is eliminated, the valve needs to be manually lifted and pulled (manual reset, no automatic). At this time, the valve is in the open state and resumes gas supply.Types of natural gas safety valvePiston-type safety valve: The valve core is a flat plate. When the supply pressure acts on the Piston A, if the pressure exceeds the safety value determined by the spring, the piston A is pushed open, and some compressed air is discharged from the valve mouth into the atmosphere; When the supply pressure is below the safety value, the spring drives the piston to move downward and close the valve port Ball and diaphragm-type safety valve: Its working principle is the same as that of the piston-type safety valve. These three types of safety valve are all with a controlling spring, and the safety value can be changed by regulating the pre-tension of the spring. Therefore, they are also called direct-acting safety valves.Preceding-type safety valve: The small direct-acting valve provides a control pressure on the diaphragm, and the hard core is pressed against the valve seat. When the gas source pressure a is greater than the safe pressure, the valv
2. What are the professional English vocabulary for air conditioning and refrigeration?
Air conditioning and refrigeration: Air conditioning and refrigeration. (Medium) The principle of air conditioning and refrigeration is that after the air conditioner is powered on, the low-pressure vapor of the refrigerant in the refrigeration system is sucked in by the compressor and compressed into high-pressure vapor, which is then discharged to the condenser. At the same time, the outdoor air drawn in by the axial fan flows through the condenser, taking away the heat released by the refrigerant and condensing high-pressure refrigerant vapor into high-pressure liquid. The high-pressure liquid is sprayed into the evaporator after passing through the filter and throttling mechanism, and evaporates at the corresponding low pressure, absorbing the surrounding heat. At the same time, the cross flow fan continuously allows air to enter the fins of the evaporator for heat exchange, and sends the cooled air into the room after releasing heat. In this way, indoor air continuously circulates and flows, achieving the goal of reducing temperature. At the same time, the outdoor air choked by the axial flow fan flows through the condenser