News

Analysis and Research on the Influence of Valve Flow Channel Structure on Flui……

Analyzed the influence of valve channel structure on the fluid flow state and flow resistance coefficient of the system, discussed the optimization design, experimental detection, and practical application of valve channel and throttling internal components, and introduced the calculation of flow resistance coefficient and pressure loss of typical valves. 1. Overview Valves are the main pressure pipeline components that transport fluids. In the process of fluid transportation, the structure of valve flow channels is closely related to the medium, flow rate, flow velocity, flow resistance, and pressure loss of the operating system, such as the structure of valve flow channels […]

2023-05-02

Key points of supervision in the manufacture of low temperature valves

Ultra low temperature valves and supporting devices are widely used in industrial enterprises such as electric power, petrochemical, and LNG. They have the characteristics of large usage, long manufacturing cycles, and complex process, making them difficult to supervise the manufacture of valve products. Based on the characteristics of low-temperature valve equipment manufacturing, this article expounds the supervision and control methods from four aspects: cryogenic treatment of raw materials and parts, normal temperature pressure test, and low-temperature test, and puts forward some suggestions for ensuring the quality, safety control, and orderly inspection of low-temperature valves. In recent years, China’s petroleum refining […]

2023-04-01

Design and application of black water regulating valve

The black water regulating valve is in the severe working condition of solid-liquid-gas three-phase mixing. The causes and hazards of its extremely short service life are analyzed in terms of solid, liquid and gas, and solutions are proposed from several angles to provide reference for future designers. In the fields of coal to methanol, coal to ethylene, and coal to ammonia, coal-water slurry gasification process promotes the mass production and economy of coal chemical industry. In the coal-water slurry gasification process, in addition to the flash tank as the core device of synthetic conversion, the black water regulating valve in […]

2023-03-02

Common faults and maintenance of valves

Valves are commonly used in pipeline transportation or flow regulation, and occupy a dominant position in chemical production. Valves in daily use often have some failures, such as failure to timely investigation and maintenance, will cause serious consequences. The installation and commissioning of valves, maintenance and common troubleshooting is an important basis for ensuring safe production. 0. Introduction Valves are widely used in chemical production plays an important role, bringing many convenient aspects to chemical production, such as the transport of chemical raw materials, control the flow of transport, connecting adjacent pipelines, even in the initial construction of pipelines, later […]

2023-02-02

Discussion on design and manufacture of valves under low temperature control

In the design and manufacturing of low-temperature control valves, the implementation of good design and manufacturing strategies has an important impact on improving the manufacturing quality and service level of enterprises. Based on effective design and manufacturing strategies, it can not only improve the progressiveness of enterprise work, but also promote the industry to keep up with the trend of the times. By carrying out good design for valve bonnet structure, drip plate structure, sealing structure, valve stem structure, pressure relief structure, anti-static and fireproof structure, and implementing corresponding factory inspection and installation guidance, the design and manufacturing work can […]

2023-01-28

Probe into the methods of valve leakage detection

Compared with other industries, the chemical industry and oil industry have more serious environmental pollution, so relevant departments and personnel must pay more attention to it. At present, China has clearly stipulated the discharge standards of waste residue, waste gas and waste water and taken relevant measures to intervene, but at present there is a lack of attention to pollution sources, such as valve leakage. Valves are the most critical components used in petrochemical smelting plants. Due to the large number of valves and the large number of valves in petrochemical production, most of them use flammable, explosive, toxic and […]

2023-01-10

Countermeasures against jamming of gas regulating butterfly valve

What is a regulating butterfly valve? A regulating butterfly valve is a common flow control valve that is shaped like a butterfly wing and can be used to regulate the flow of fluid. A regulating butterfly valve usually consists of a circular butterfly plate, which rotates to regulate the flow. Regulating butterfly valves are commonly used to convey a variety of fluids such as water, gasoline, oil and gas, gases, powders, and they can be used in both high and low pressure systems. The main advantage of regulating butterfly valve is its high accuracy of flow adjustment, which can control […]

2022-12-27

What is a pilot-operated safety valve

What is a pilot-operated safety valve? Pilot-operated safety valve is a non-direct load type safety valve. It consists of a main valve and a pilot valve (also known as a “secondary valve”), which is driven by the medium discharged from the pilot valve and is also known as a “pulse safety valve” because the pressure in the system is pulsed. From a separate point of view, the pilot valve itself is also a direct-load safety valve. When the medium turn force reaches the opening pressure of the pilot valve, the pilot valve opens first and the discharged medium enters the […]

2022-12-02

What is grinding of valve sealing surface?

What is the grinding of valve sealing surface? Grinding, in the valve manufacturing process is a common finishing method for its sealing surface. Grinding can make the valve sealing surface to obtain high dimensional accuracy, geometric roughness and surface roughness, but can not improve the mutual position accuracy between the sealing surface surfaces. After grinding the valve sealing surface can usually reach the dimensional accuracy of 0.001-0.003mm; geometric shape accuracy (such as unevenness) of 0.001mm; surface roughness of 0.1-0.008. The basic principle of sealing surface grinding The basic principle of seal surface grinding includes eight aspects: cleaning and inspection process, […]

2022-11-11

Selection and installation precautions of oxygen valve

Based on the analysis of the characteristics of oxygen and the causes of combustion and explosion of oxygen pipes and oxygen valves, this paper puts forward suggestions on the selection and installation of oxygen valves. With the rapid development of industrial modernization and the continuous emergence of new processes and devices, the parameter range of oxygen valves is also constantly improving, and the requirements for oxygen valves are increasingly strict. Oxygen is a combustion promoter, especially high-temperature and high-pressure oxygen can not meet any spark, so anti-static performance is an important guarantee for stable operation of oxygen valve. The anti-static measures […]

2022-10-07

Home
Previous
1
2
3
Next
Last/End

+86-18267732328

[email protected]

Analysis and Research on the Influence of Valve Flow Channel Structure on Flui……

Key points of supervision in the manufacture of low temperature valves

Design and application of black water regulating valve

Common faults and maintenance of valves

Discussion on design and manufacture of valves under low temperature control

Probe into the methods of valve leakage detection

Countermeasures against jamming of gas regulating butterfly valve

What is a pilot-operated safety valve

What is grinding of valve sealing surface?

Selection and installation precautions of oxygen valve