Overview of professional refrigeration equipment for mine cooling/dust removal

Carefully designed, strictly constructed, and scientifically managed to create a world-class coal mine cooling system. Coal mine cooling and refrigeration equipment, coal mine cooling equipment, Shenzhen mine cooling equipment, Hunan coal mine cooling and refrigeration equipment, coal mine cooling and refrigeration equipment, Baise coal mine cooling and refrigeration equipment, coal mine cooling and refrigeration equipment manufacturer, Datong coal mine cooling and refrigeration equipment. After the equipment is put into use, the temperature of the excavation working face can be reduced by 3 to 5 degrees Celsius, greatly improving the working environment for employees, protecting their physical and mental health, and promoting safe production.

The main heat sources in coal mines include: heat release from surrounding rock in tunnels, heat release during coal transportation, compression heat from downward (or upward) airflow, heat generated during the operation of mechanical and electrical equipment, oxidation heat release, and other heat sources. Due to the depth of mining- The ambient temperature at 925M level exceeds 37 ℃ and is located in the second level heat hazard zone. The entire system is composed of a ground refrigeration system, an ice water system, and an underground cooling and dispersing system. In reality, the underground cooling and dispersing system is an open system, where the return water flows back to the melting ice pool. The dust prevention water in the mining area, which is a small amount of water, can be connected from the cold water supply pipeline for dust prevention and spray cooling on the working face, effectively reducing the temperature of the underground environment and improving production efficiency. Ensure safe underground operations.

Introduction to Coal Mine Cooling Methods: Coal Mine Underground Cooling Methods:

1. It is to establish a refrigeration station and a cyclone machine near the wellhead on the ground, and generate a low-temperature refrigerant of -5 ℃± 1 ℃ through refrigeration units or other pre cooling devices.

2、The -5 ℃± 1 ℃ ethylene glycol aqueous solution produced by the ground refrigeration station host is cooled to 2 ℃± 0.5 ℃ through plate heat exchanger and purified water heat exchange, and transported to the underground of the mine through pipelines. Reduce the temperature of the airflow entering the working face through an air cooler.

3、In coal mines, a -3 ℃± 2 ℃ ethylene glycol aqueous solution undergoes cold and hot exchange through high and low pressure heat exchangers, while the ethylene glycol aqueous solution releases its cooling capacity and returns to the surface for recycling. The high and low pressure heat exchanger produces low-temperature water or other refrigerant at 2 ℃± 1 ℃.

4、Low temperature water with a temperature of 2 ℃± 1 ℃ is transported by a cold water pump to an air cooler installed in the machine roadway of the mining face. Through the air cooler, the temperature of the airflow entering the working face is reduced, achieving cooling underground in the coal mine. Therefore, it has low cost, good cooling effect, and does not pollute the environment.

Our company independently develops, designs, and produces professional mine cooling and refrigeration technology equipment. Mine cooling and refrigeration equipment is widely used in industries that require low-temperature cooling and freezing, such as coal mine cooling equipment, iron mine cooling equipment, copper mine cooling equipment, gold mine cooling equipment, tin mine cooling equipment, tungsten mine cooling equipment, etc. It is also used as a low-temperature cooling source in various ultra-low temperature laboratories, which can meet the demand for process cooling sources in 24-hour continuous production in mines.

1、The refrigeration units are all imported from brands such as Bitzer from Germany and Copeland from the United States; Imported semi enclosed screw compressors or fully enclosed scroll compressors, as the main refrigeration unit, have the characteristics of stable performance, energy saving and high efficiency.

2、80% of other major refrigeration components are American ALCO Danfoss, Merck from the United States International renowned brands such as Alfa Laval; It has the characteristics of stable performance, safety and efficiency.

3、Equipped with advanced automatic control system; Adopting Siemens PLC programmable control system with LCD touch screen display, automatic power on/off, and unmanned operation management according to the predetermined work plan.

Unit design features:

1、Independent refrigeration system design, multi head units are relatively independent, with minimal moving parts and reliable operation. Imported high-efficiency economical semi enclosed twin-screw compressors are used, which have high energy efficiency, reliable operation, and long service life. Each refrigeration system compressor starts with star delta voltage reduction at the minimum load (25%), effectively reducing the starting current and impact on the power grid.

2、The flexible adjustable design enables continuous energy regulation (stepless energy regulation) of the unit between 25% and 100%, ensuring the full performance of the compressor and helping users save operating costs to the greatest extent possible

3、Adopting high-precision large screen touch screen, industrial grade intelligent controller and advanced computer control system, fully digital Han display, connected with external devices, remote users and control room through standard interfaces, it can achieve the following multiple control functions.(1) Multiple protection functions: compressor exhaust over temperature, motor over temperature, cold water anti freezing, etc. Temperature protection: overcurrent, phase loss, reverse phase, etc. Electrical protection: refrigerant system high and low voltage, oil level, water cut-off and other emergency state protection

(2) Necessary maintenance and management functions such as alarm, prompt, recording, and retrieval can be set for the above protection functions

(3) Automatic power on/off, automatically achieving unmanned operation management according to the predetermined work plan

(4) Multiple password settings ensure that the device will not shut down or be damaged due to accidental factors

(5) Realize remote data acquisition, operation inspection and control, and failure through LAN or Internet.

Diagnostic and other management functions

1、Selecting internationally renowned brands of thermal expansion valves, solenoid valves, check valves and other control components to ensure efficient and reliable operation of the unit over a wide range of operating conditions

2、Adopting a dual cycle coupled refrigeration method with an energy-saving device to improve the working capacity and energy-saving efficiency of the unit

3、After comprehensive testing and full load operation testing by the manufacturer, the product is shipped with refrigerant to ensure that the equipment can start working after water and electricity are in place

4、The compressor is equipped with a patented exhaust muffler to ensure low-noise operation of the unit

5、Fully utilize low-temperature cooling water, significantly save energy. The unit fully utilizes cooling water as low as 15 ℃, achieving significant energy-saving effects

6、The heat recovery type adopts patented heat collector technology, with a heat recovery capacity of 30% -40% of the cooling capacity in summer, and a maximum heat recovery capacity of 75% when the process chiller is used in winter.

At the same time, our company can design and produce ultra-low temperature, anti-corrosion, and explosion-proof industrial chillers according to user requirements. We can provide users with engineering design, equipment production, engineering installation, maintenance and other engineering services. The screw type low-temperature chiller unit provides one-year free maintenance and lifelong maintenance Comprehensive after-sales service has won the favor of a large number of customers

Main features of the system:

1、The application of thermoelectric ethylene glycol low-temperature cooling technology has reduced the average ambient temperature of the mining face by more than 8 ℃ after implementation.

2、The independently developed high-pressure heat exchanger is the largest working pressure cooling equipment in China (working pressure of 12MPa), filling the domestic gap.

3、This system can simultaneously supply cooling to underground working faces and ground buildings, and is currently the largest system combining underground cooling and ground central air conditioning both domestically and internationally.

4、Optimize and integrate advanced domestic evaporative absorption refrigeration technology with low-temperature compression refrigeration technology, ensuring a reliable and stable system.