Setting Principles of Commonly Used Valves in the Chemical Design
1. Installation being carried out strictly in accordance with the requirements for the construction process
When designing chemical pipelines, designers should pay full attention to the setting of the valve. In the modern society of similar product markets, valve types are diverse, but there is certain commonality for the installation and layout principles. Therefore, in the actual installation and setting of a valve, it must be installed in strict accordance with the construction process to ensure the quality of installation of valves; setting and installation of valves are carried out on the premise of standardized installation.
2. Giving priority to installation on horizontal pipelines
When designing chemical pipelines, it is very important to make a reasonable choice of installation locations of valves. In comparison, the most ideal installation location for valves is the horizontal pipeline of the pipeline system, because the horizontal pipeline of the pipeline system has good smoothness. Installing and arranging valves at this position can effectively avoid large-area blockage or liquid accumulation problems. Therefore, in the valve arrangement of chemical pipeline design, priority should be given to installing valves in horizontal pipelines. It should be noted that if the valve is installed on a vertical pipeline, the most reasonable distance between the valve's installation position and the ground is between 1 and 2 meters.
3. Effectively controlling installation of valves and focusing on the maintenance of valves
When carrying out specific design for chemical pipelines, designers should consider the convenience of installation and maintenance of valves in advance, because during the operation of chemical pipelines, damage of valves will inevitably occur. Maintenance or replacement of valves is required, so reasonable planning of setting of valves should be made by designers. Valves should be installed in the pipeline system where it is convenient for operation, repair and maintenance so that it can not only meet the operational requirements for the pipeline system, but also will not restrict the installation, operation, and subsequent repair and maintenance of the valve, fully realizing the reasonable design and setting of valves, ensuring the efficient and stable operation of the chemical pipeline system, and helping enterprises obtain greater benefits.
4. Fully considering the directions of setting and installation of valves
In the current valve market, many valves have directional requirements when they are installed. Therefore, in the actual design of chemical pipelines, the designer must fully consider this to ensure the correctness of the valve's direction. In the installation process, the personnel for installation and construction should also pay full attention to this. The problem of wrong installation directions of valves should not happen to ensure the reliability of the construction quality of chemical pipelines. At the same time, the quick damage of the valve caused by the valve's wrong installation direction can be effectively avoided and ensure the safety, stability and reliability of the operation of the pipeline system.
2. Giving priority to installation on horizontal pipelines
When designing chemical pipelines, it is very important to make a reasonable choice of installation locations of valves. In comparison, the most ideal installation location for valves is the horizontal pipeline of the pipeline system, because the horizontal pipeline of the pipeline system has good smoothness. Installing and arranging valves at this position can effectively avoid large-area blockage or liquid accumulation problems. Therefore, in the valve arrangement of chemical pipeline design, priority should be given to installing valves in horizontal pipelines. It should be noted that if the valve is installed on a vertical pipeline, the most reasonable distance between the valve's installation position and the ground is between 1 and 2 meters.
3. Effectively controlling installation of valves and focusing on the maintenance of valves
When carrying out specific design for chemical pipelines, designers should consider the convenience of installation and maintenance of valves in advance, because during the operation of chemical pipelines, damage of valves will inevitably occur. Maintenance or replacement of valves is required, so reasonable planning of setting of valves should be made by designers. Valves should be installed in the pipeline system where it is convenient for operation, repair and maintenance so that it can not only meet the operational requirements for the pipeline system, but also will not restrict the installation, operation, and subsequent repair and maintenance of the valve, fully realizing the reasonable design and setting of valves, ensuring the efficient and stable operation of the chemical pipeline system, and helping enterprises obtain greater benefits.
4. Fully considering the directions of setting and installation of valves
In the current valve market, many valves have directional requirements when they are installed. Therefore, in the actual design of chemical pipelines, the designer must fully consider this to ensure the correctness of the valve's direction. In the installation process, the personnel for installation and construction should also pay full attention to this. The problem of wrong installation directions of valves should not happen to ensure the reliability of the construction quality of chemical pipelines. At the same time, the quick damage of the valve caused by the valve's wrong installation direction can be effectively avoided and ensure the safety, stability and reliability of the operation of the pipeline system.
5. Setting measures of common valves in the chemical design
Installation arrangement of regulating valves
In the overall design of the chemical piping system, the setting design of installation of valves is very important. For the installation and setting of valves, in addition to strictly complying with the relevant installation and setting principles, the corresponding setting measures should also be selected according to the specific type of valves. Regulating valves are used very often in chemical companies. Regulating valves are also called control valves, which can play an important role in the automated production of enterprises. When setting and installation of regulating valves are performed, signals are mainly used to control the regulating valve, so that it can make an adjustment response according to the signal command, realize the adjustment of the flow inside the pipeline, and effectively control the pressure and temperature inside the pipeline. In the production process of chemical products, the regulating valve usually control the production equipment by controlling the pipeline to promote the realization of automation of chemical production. Before performing setting and installation of the regulating valve, the operator should read the professional installation instructions in advance and conduct a comprehensive and detailed inspection for all relevant aspects to lay the foundation for the smooth implementation of the regulating valve’s installation, and then strictly follow the installation requirements and standards to ensure the use effect of the regulating valve.
Installation and arrangement of steam traps
The specific function of the steam trap is to promote the automatic discharge of non-condensable substances like steam condensed water in the heating equipment or the the steam pipeline on the premise of preventing the leakage of steam. The first thing that needs to pay attention to is that installation in series is not allowed concerning installation and arrangement of the steam trap. Parallel installation of steam traps can be carried out to ensure the convenience of operation. In addition, it is not good for multiple equipment to share a steam trap. Because the thermal load of each production equipment is different in the process of chemical production, the steam condensate pressure of the equipment is also different. If multiple equipment share a steam trap, fluid accumulation is easy to appear in the chemical pipeline system. It has a negative impact on the safe and normal operation of the pipeline system. Therefore, it is necessary to set up and use the steam trap of various production equipment separately. Another important aspect for the installation of steam traps is to effectively control the installation height. Normally, the installation height should be designed below heights of positions of the condensate discharge, which can promote the smooth discharge of condensate, so there will be no accumulation of condensate inside of pipelines or equipment, ensuring the smooth and stable operation of the chemical pipeline system and equipment.
Installation and arrangement of safety valves
The ultimate goal of using safety valves in chemical production equipment is to provide safety guarantees for the operation of chemical production equipment and pipeline systems, and to ensure the safe and stable operation of chemical systems. Under conditions of everything being normal, the safety valve will remain closed. Once the pressure in the chemical production equipment or pipeline exceed the predetermined index, the safety valve can be opened automatically. By adjusting the fluid's flow and other measures, the pressure in the chemical equipment and pipeline can be regulated until the pressure index returns to normal. Since the internal pressure of the pipeline will have a certain effect on the pipeline near the inlet and outlet of the safety valve, in the specific design and installation process of safety valves, relevant personnel must fully consider materials of safety valves to ensure the scientific and rational selection of the safety valve and avoid problems caused by unreasonable selection of materials of pipes. In addition, when the safety valve is installed, no liquid should be left in the inlet and outlet pipes of the safety valve to avoid potential safety hazards.
6. Conclusion
In view of the importance of valves in chemical pipelines and equipment, setting of valves should be fully paid attention to in chemical design; strengthen understanding of types and setting principles of valves; ensure the correct selection of valves and the safety of chemical production; promote economic benefits of chemical enterprises.
In the overall design of the chemical piping system, the setting design of installation of valves is very important. For the installation and setting of valves, in addition to strictly complying with the relevant installation and setting principles, the corresponding setting measures should also be selected according to the specific type of valves. Regulating valves are used very often in chemical companies. Regulating valves are also called control valves, which can play an important role in the automated production of enterprises. When setting and installation of regulating valves are performed, signals are mainly used to control the regulating valve, so that it can make an adjustment response according to the signal command, realize the adjustment of the flow inside the pipeline, and effectively control the pressure and temperature inside the pipeline. In the production process of chemical products, the regulating valve usually control the production equipment by controlling the pipeline to promote the realization of automation of chemical production. Before performing setting and installation of the regulating valve, the operator should read the professional installation instructions in advance and conduct a comprehensive and detailed inspection for all relevant aspects to lay the foundation for the smooth implementation of the regulating valve’s installation, and then strictly follow the installation requirements and standards to ensure the use effect of the regulating valve.
Installation and arrangement of steam traps
The specific function of the steam trap is to promote the automatic discharge of non-condensable substances like steam condensed water in the heating equipment or the the steam pipeline on the premise of preventing the leakage of steam. The first thing that needs to pay attention to is that installation in series is not allowed concerning installation and arrangement of the steam trap. Parallel installation of steam traps can be carried out to ensure the convenience of operation. In addition, it is not good for multiple equipment to share a steam trap. Because the thermal load of each production equipment is different in the process of chemical production, the steam condensate pressure of the equipment is also different. If multiple equipment share a steam trap, fluid accumulation is easy to appear in the chemical pipeline system. It has a negative impact on the safe and normal operation of the pipeline system. Therefore, it is necessary to set up and use the steam trap of various production equipment separately. Another important aspect for the installation of steam traps is to effectively control the installation height. Normally, the installation height should be designed below heights of positions of the condensate discharge, which can promote the smooth discharge of condensate, so there will be no accumulation of condensate inside of pipelines or equipment, ensuring the smooth and stable operation of the chemical pipeline system and equipment.
Installation and arrangement of safety valves
The ultimate goal of using safety valves in chemical production equipment is to provide safety guarantees for the operation of chemical production equipment and pipeline systems, and to ensure the safe and stable operation of chemical systems. Under conditions of everything being normal, the safety valve will remain closed. Once the pressure in the chemical production equipment or pipeline exceed the predetermined index, the safety valve can be opened automatically. By adjusting the fluid's flow and other measures, the pressure in the chemical equipment and pipeline can be regulated until the pressure index returns to normal. Since the internal pressure of the pipeline will have a certain effect on the pipeline near the inlet and outlet of the safety valve, in the specific design and installation process of safety valves, relevant personnel must fully consider materials of safety valves to ensure the scientific and rational selection of the safety valve and avoid problems caused by unreasonable selection of materials of pipes. In addition, when the safety valve is installed, no liquid should be left in the inlet and outlet pipes of the safety valve to avoid potential safety hazards.
6. Conclusion
In view of the importance of valves in chemical pipelines and equipment, setting of valves should be fully paid attention to in chemical design; strengthen understanding of types and setting principles of valves; ensure the correct selection of valves and the safety of chemical production; promote economic benefits of chemical enterprises.
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