Focus on Like coal mine project

          Energy is an important material basis for the survival and development of human society. Throughout the history of human social development, every major progress of human civilization is accompanied by the improvement and replacement of energy. The development and utilization of energy has greatly promoted the development of world economy and human society.

       Coal is China’s basic energy. Increasing supply capacity, optimizing energy structure, ensuring coal mine safety, reducing environmental pollution, improving resource utilization efficiency and building a new coal industry system are the urgent needs to ensure the development of national economy. China has stepped up the exploration of coal resources, supported the general survey of resources and detailed geological survey of large coal bases, standardized commercial exploration, improved the degree of resource guarantee, and steadily promoted the construction of large coal bases.

          Since 2019, Like valve has undertaken various coal mine projects, mainly including Lingxin project, Dongtan project and Jinjitan project, which has contributed to the development of coal mine!

 图片2On site supply picture (1)

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On site supply picture (2)

          In the coal mine project, the underground environment of the coal mine is humid and bad, and attention should be paid to explosion-proof and other matters. Pneumatic butterfly valve and electric butterfly valve are mainly used in this project, and Like valve products can meet this condition.

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Electric soft seal butterfly valve

Connection method of electric butterfly valve

Mainly: flange type and wafer type; The sealing situation of electric butterfly valve mainly includes rubber seal and metal seal. The power signal light displays during the opening and closing of the electric butterfly valve. The product can be used as stop valve and regulating valve of pipeline system. With manual opening and closing device, once the power supply is cut off, it can be operated manually without affecting the application.

Working principle of electric butterfly valve

The working power supply usually includes: AC220V, AC380V, etc. Input signal: 4 ~ 20mA, 0 ~ 10V and other weak current signals. After the adjustable electric actuator and valve rod are connected and debugged; Use electric energy as the driving force to drive the butterfly valve plate for 0 ~ 90 ° partial reverse rotation. Receive the 4 ~ 20mA signal from the industrial automation control system to accurately control the valve switching degree, so as to achieve the regulation and control of different demand parameters such as flow, temperature and pressure.

Overview of pneumatic butterfly valve

Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve plays the role of opening and closing by rotating the round butterfly plate through the valve stem. Pneumatic valve mainly plays the role of cut-off and can also be used as a regulating valve. At present, butterfly valve is more and more used in high-pressure large and medium-sized pipelines. Classification of pneumatic butterfly valve: stainless steel pneumatic butterfly valve, hard seal pneumatic butterfly valve, soft seal pneumatic butterfly valve, carbon steel pneumatic butterfly valve.

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Pneumatic soft seal butterfly valve

Working principle of pneumatic butterfly valve

It is composed of a pneumatic actuator and a butterfly valve. The pneumatic butterfly valve enters the pneumatic actuator through compressed air to drive the actuator to drive the circular butterfly plate to make a 90 ° rotation movement, which is used as a pipe switch and regulating the flow.

The pneumatic butterfly valve works through the opening and closing of 0-90 degrees. That is, 0 degrees is fully closed and 90 degrees is fully opened. Add a positioner on the pneumatic actuator and input the corresponding signal to adjust the butterfly valve disc at any angle of 0-90 degrees.

Comparison of pneumatic wafer butterfly valve actuator: the actuator is a device in the automation technology tool to receive control information and exert control effect on the controlled object. Actuators are divided into pneumatic, electric and hydraulic actuators according to the driving energy used. Electric actuators and pneumatic actuators are the mainstream actuators at present.

Like automatic electric valves are widely used in coal mining industry. It is mainly used in raw material preparation system, pressurized conveying system, reaction furnace inlet and outlet control system, combustion supporting isolation system, separation and recovery system in various coal chemical processes. As a part of these systems, the pneumatic / electric valves of Like automation play a key role through control and switching sequence action to ensure the realization of the whole process flow.


Post time: Aug-30-2021

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