Explosion-proof air conditioners supplied to the US customers are ready for shipment

The explosion-proof air conditioners supplied by Sino Mechanical Equipment to the US oil drilling customers have completed production and commissioning, and are ready for shipment after packing.

Application of explosion-proof air conditioners of Sino Mechanical Equipment

Mainly used in flammable and explosive environments such as petrochemical, military industry, oil fields, and offshore oil drilling. Explosion-proof air conditioners are a type of explosion-proof electrical equipment. Its appearance and usage are similar to those of general air conditioners. According to different environments, explosion-proof air conditioners are divided into high temperature, low temperature, ultra-high temperature, and ultra-low temperature. Explosion-proof air conditioners have the functions of cooling, heating, and automatic defrosting. The difference is that the compressors and centrifugal fans of explosion-proof air conditioners have all passed a unique explosion-proof solution. The type of explosion-proof air conditioners is explosion-proof for the whole machine.

Detection before installation of explosion-proof air conditioners

Before installing explosion-proof air conditioners, the basic characteristics of the performance and functions of explosion-proof air conditioners should be tested first, including production certificates, models, equipment quantity, explosion-proof air conditioner accessories, etc. Problems found during the inspection should be solved in a timely manner to ensure the performance and quality of explosion-proof air conditioners.

During the installation of explosion-proof air-conditioning equipment, the indoor and outdoor equipment of the explosion-proof air-conditioning must be fixed and checked to see if all ventilation and drainage pipes of the explosion-proof air-conditioning are connected normally, whether the air-conditioning power supply uses a dedicated line, and whether the power supply grounding is normal.

As the core component of the air-conditioning explosion-proof refrigeration compressor, a comprehensive analysis of its power and power consumption must be conducted before installation. Two points should be noted during the installation of the compressor. On the one hand, the air-conditioning compressor must have a special place, and the regional space must be kept dry to ensure its safety during operation. On the other hand, the compressor should be isolated from noise.

The debugging of explosion-proof air-conditioning usually refers to the pre-debugging of air-conditioning refrigeration parameters. The debugging of explosion-proof air-conditioning usually needs to be carried out with technical personnel. The debugging of explosion-proof air-conditioning requires adjusting system parameters such as refrigeration power and temperature sensing when the air-conditioning is running.

Under the premise that the explosion-proof air-conditioning is running well, the thermal sensitivity of the explosion-proof air-conditioning is debugged, and the operating power of the air-conditioning is adjusted according to the operating temperature and humidity environment of the explosion-proof air-conditioning.

How to choose explosion-proof air conditioner?

I. Air conditioner power and cooling capacity

Generally speaking, the cooling capacity of 1HP is about 2.2kw-2.6kw, 3200-3600W is 1.5HP, and 4500-5500W is 2HP, which is suitable for rooms of about 25 square meters.

II. Cooling capacity area

Household air conditioners generally use 120-150w per square meter. If the room is exposed to the sun and the sealing is poor, it can be increased appropriately, but generally do not exceed 200w per square meter. For example, a 20-square-meter bedroom is not exposed to the sun and has good sealing and heat insulation, so 2600W can be selected. If the sealing and heat insulation are slightly poor, 3000W can be selected; if it is exposed to the sun and the sealing and heat insulation are not good, 3200, 3500W can be selected.

III. After the air conditioner power is calculated, you can choose the air conditioner and choose the appropriate explosion-proof level according to the explosion-proof area.

Structure of explosion-proof air conditioner

Explosion-proof air conditioner is an explosion-proof electrical appliance, which is mainly used for refrigeration and heating in flammable and explosive environments such as petroleum, chemical industry, military industry, oil depot, offshore oil platform, etc. The appearance and use of explosion-proof air conditioner are the same as ordinary air conditioner. Explosion-proof air conditioner can be divided into high temperature, low temperature, ultra-high temperature and ultra-low temperature according to the working environment.

Explosion-proof air conditioner has the functions of refrigeration, heating and automatic defrosting. The compressor, fan, etc. have undergone special explosion-proof treatment, and the explosion-proof type is fully explosion-proof. Explosion-proof products can be used in flammable and explosive mixed gas environments such as petroleum, chemical industry, medicine, scientific research, military, dangerous warehouses, etc. The structure adopts composite explosion-proof technology such as explosion-proof type, intrinsically safe type, and cast sealing type. The control end is all intrinsically safe control without electric sparks. It is easy and safe to use. It adopts high-efficiency multi-fin heat exchanger. When the cold coal passes through, the contact with the air is more sufficient. It greatly improves the cooling and heating effect of the air conditioner. There are two types: manual and remote control. Explosion-proof air conditioners shall not be produced or sold without a production license.

The explosion-proof air conditioner consists of connecting pipes between the indoor unit and the outdoor unit (vertical explosion-proof air conditioner):

Air inlet: Indoor air is sucked in here and dust is removed through the air filter.

Air outlet: The conditioned air is discharged from here.

Drain pipe: The moisture in the room is discharged through the drain pipe, and the condenser produces small water droplets.

Connecting pipe: The indoor unit and the outdoor unit are connected by a copper pipe, and the refrigerant flows out of the copper pipe.

Outdoor unit: The outdoor unit is composed of electrical components such as a compressor, a fan, a heat exchanger, and a capillary tube (electronic expansion valve).

Control the power switch, select cooling and heating, adjust the set temperature, and control the indoor temperature. Working principle of air conditioner (heat pump type) When the heat pump air conditioner is running under cooling conditions, the three-way valve changes direction to connect the components. At this time, the indoor heat exchanger becomes an evaporator and the outdoor heat exchanger becomes a condenser. The low-temperature, low-pressure superheated gas from the indoor heat exchanger enters the gas-liquid separator through the four-way valve and the muffler. After the liquid is separated, the hot gas is sucked in by the compressor and compressed into high-temperature and high-pressure gas. The gas enters the outdoor heat exchanger through the four-way valve for heat release and condensation, becoming a supercooled liquid. The supercooled liquid becomes a low-temperature, low-pressure two-phase fluid after the capillary resistance is reduced in pressure, enters the indoor heat exchanger to evaporate and absorb heat (the indoor air is cooled at this time), and then enters the next cycle through the four-way valve and the gas-liquid separator: the filter is mainly used to separate the refrigerant and the compressor oil to ensure the heat exchange efficiency of the heat exchanger.

When the heat pump air conditioner is running under heating conditions, the four-way valve rotates on the dotted line in the figure. At this time, the indoor heat exchanger becomes a condenser and the outdoor heat exchanger becomes an evaporator. The low-temperature, low-pressure superheated gas of the outdoor heat exchanger enters the gas-liquid separator through the four-way valve and the muffler. After the liquid is separated, the dry superheated gas is sucked into the compressor and compressed into the high-temperature, high-pressure gas, and the gas enters the indoor heat exchanger through the four-way valve to release heat and condense (the indoor air is heated at this time). After the capillary resistance is reduced, the supercooled liquid becomes a low-temperature, low-pressure two-phase fluid.

Enter the outdoor heat exchanger to evaporate and absorb heat, and then the superheated gas enters the next cycle through the four-way valve and the gas-liquid separator. In order to prevent the indoor comfort from decreasing due to thawing during heating, the hot gas bypass uninterrupted heat defrosting method is adopted. During defrosting, the working principle is basically the same as heating, but the defrost solenoid valve is opened. The high-temperature and high-pressure superheated gas of the compressor part is distributed to the inlet of the outdoor heat exchanger, and the temperature of the outdoor heat exchanger rises rapidly to above 0℃, and the frost layer of the outdoor heat exchanger melts, so that the heat exchanger maintains good heat transfer efficiency.

Explosion-proof air conditioners maintain the basis of ordinary air conditioners, and carry out explosion-proof treatment on the electrical system, including compressors, fans, and wires (such as installing explosion-proof boxes, controlling switch line conversion, etc.). The control line adopts an electrical system with an optically coupled solid-state relay as the core to prevent the entire explosion. Under the basic function of the original air conditioner, the structure is simplified, the operation is simplified, and the equipment is safely used in a sexual mixed gas environment.

Explosion-proof air conditioner suppliers

Sino Mechanical Equipment is a reliable explosion-proof air conditioner supplier in China, serving the oil drilling and petrochemical industries for a long time, providing high-quality explosion-proof air conditioners.