Wuzhong is a leading enterprise in China's process industry automatic control valve industry, founded in 1959, a national third-line construction enterprise. The company has always adhered to the development concept of professionalism, focus, innovation and transcendence, under the leadership of Ma Yushan, chairman of the skill leader company, through product innovation and management innovation, the competitiveness has reached the international first-class enterprise level, and is the only control valve manufacturer in China that can compete with the top brands of United States and Germany.
The company has a national enterprise skills center, a national engineering research center and a research and development innovation team of Ningxia serious equipment critical control valve development and innovation channels. In recent years, the company has developed more than 60 new products for controlled development, of which 24 have been rated as national key new products, and have successively won eight national, provincial and ministerial science and technology progress awards, and 300 invention and application of new patents.
Through independent innovation, the key core skills have been autonomous, and the deep-sea 1500-meter control valve has reached the international leading level. The high-pressure valve of the ultra-low temperature LNG receiving station and the anti-surge valve of the compressor broke the exclusive monopoly of foreign countries, the key control valves of the coal chemical industry all replaced the imports, and the ultra-high temperature and high-pressure valves were localized. Large low difference, low noise control valve into the field of military industry and nuclear power.
Guided by Made in China 2025 and aiming at Industry 4.0, the company has fully completed intelligent production by focusing on quality, cost, efficiency and effectiveness, and has been assessed as a pilot demonstration enterprise of intelligent production by the Ministry of Industry and Information Technology. The labor productivity of all employees has increased from 200,000 yuan to 1.5 million yuan, and the development cycle has been shortened by 50%. Digital production comprehensively improves product quality, customers monitor the whole process of product raw materials, casting, processing, testing and other processes online in real time, complete long-distance supervision, and are the first in the domestic discrete production industry to complete the minute-level scheduling and execution of workshop operations. Human, machine, and data are interconnected to form a real-time interaction between virtual and real production.
With the support of the outstanding innovation development environment and talent policy of the Party Committee and the government of Wuzhong City in the autonomous region, the company has strengthened the construction of the talent team, cultivated and introduced various skills and management talents through the implementation of innovation channels and talent innovation projects, created a talent pyramid from three levels, and formed a talent team that supports the endogenous power of the enterprise.
The R&D center established in Los Angeles, United States, hires United States experienced technical experts, introduces international advanced valve design concepts, and develops cutting-edge valve products. Wuzhong's appearance is rooted in the northwest, and after continuous innovation, it has successfully completed the transformation and upgrading, and the products continue to develop to the high-end. The industry is transforming to production services together, so that the factory is full of intelligence and the production is full of intelligence. Today, with the innovative energy of meticulous carving, Wuzhong Appearance continues to surpass itself, achieves classic international brands, and creates a world-class intelligent enterprise.
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Turbine fixed ball valve standard execution suppression - Wuzhong instrument
The process of shell experiments and seal experiments done by turbine fixed ball valves in some artificial environments is as follows.
Double blocking and discharge function of turbine fixed ball valve: the turbine ball valve is fixed by using tension spring preload floating valve seat, when the valve is in two different states, fully open and fully closed, the fluid is ...
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Causes and solutions of internal leakage of safety valve jumping
First, there is a leak in the safety valve. The industry said that when there is a small leakage in the safety valve, it is generally not easy to find, but even a small leakage point will expand in the erosion.
The test method is to test ...
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The core components and technical requirements of the safety valve - Wuzhong instrument
A safety valve is an automatic valve that uses the medium's own force to expel an additional amount of fluid without any external force to avoid the pressure exceeding the additional safety value. When the pressure has recovered to normal, the valve closes again and prevents the continuous flow of the medium. (TSG ZF001-2006)
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The working principle of valve limit switch box detection - Wuzhong instrument
The angular displacement of the valve position detected by the valve limit switch box changes the transmission shaft through the coaxial adjacency or the reaction rod, so that the cam touches the miniature switch, so that the contact of the switch assembly is closed or disconnected, and the switching signal is transmitted to the outside through the terminal, and the passer is displayed on the spot.
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Valve pressure test method - Wuzhong instrument
The commonly used medium for valve pressure test is water, oil, air, steam, nitrogen, etc., and the pressure test methods of various valves are as follows.
(1) Globe valve and throttle valve The strength test of globe valve and throttle valve, usually the assembled valve is placed in the pressure test frame, the valve disc is turned over, and the medium is injected to...
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The main basis for the primary selection of valve type of Wuzhong instrument
Generally, the selection of control valve is mainly based on the nature of the medium, process parameters, use requirements, etc.
1. The properties of the medium should be clearly attributed to which of the following:
(1) General fluids
(2) High viscosity, fluids containing suspended solids, fibrous and other fluids
(3) Toxic or high...
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Wuzhong instrument high pressure differential control valve selection
1. Confirm the working conditions: P1, △P, Q, T1, fluid characteristics, allowable noise, etc.; Select the appropriate ANSI pressure class for the body and trim requirements
2. Calculate the required initial Cv value, check the noise and cavitation levels
3. Select the type of trim of the control valve: if there is no noise ...
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Indicates the classification of instruments and their advantages and disadvantages
The mechanical deflection angle of the movable part of the surface can be measured and converted, and the size to be measured is directly indicated by the indicator, so it is also called the direct-reading appearance.
According to the working principle, the indication surface can be divided into magnetoelectric system appearance, electromagnetic system appearance, electric system appearance and ...
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Features of pneumatic regulating stainless steel butterfly valve - Wuzhong instrument
Product features of pneumatic conditioning stainless steel butterfly valves:
1. Simple, small size, light weight, small flow resistance, large flow coefficient and good sealing performance. Large conditioning range. It is the fulfillment unit of the instrument in the automatic control system.
2、 ...
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Characteristics of elastic seat seal gate valve - Wuzhong instrument
Features of Gate Valve:
Light weight: The body is made of high-grade ductile iron, and the weight is about 20%-30% less than that of the traditional gate valve, and the device is easy to repair.
Flat-bottomed gate seat: The traditional gate valve is often washed by water and the pipe is due to foreign objects such as stone, wood, cement, iron filings, etc.
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The working principle of the adjustable pressure reducing valve - Wuzhong instrument
The structure of the adjustable pressure reducing valve is composed of a main valve, a pressure feedback system, and a control pipeline. The main valve is composed of main parts such as valve body, diaphragm seat, valve cover, diaphragm, valve stem, valve plate, etc. The adjustable pressure reducing valve is installed on the one-way water supply pipeline in the city, which can reduce the upstream (inlet) pressure of the higher valve.
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Solenoid valve installation precautions
1. Before the equipment, you should carefully read the operation manual of the product, check whether the product can fully meet the application needs, understand the key to the equipment, and prepare for the operation.
2. Check whether the parameters marked on the nameplate can be the parameters of the selected product and whether they can be consistent with the instructions.
3. Acceptance ...
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Valve failure prevention measures - Wuzhong instrument
1. Leakage of stuffing box This is the primary aspect of running, running, dripping and leaking, which is often seen in the factory. There are several reasons why stuffing box leaks occur:
(1) The corrosiveness, temperature and pressure of the filler and the working medium are not suitable; (2) The filling method is wrong, especially the whole filler ...
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Precautions for valve installation - Wuzhong instrument
1. Before the device, check whether the valve has notched parts, whether the type is correct, whether there are debris in the valve body, and whether the muffler is blocked.
2. Close the valve and cylinder.
3. Device the cylinder on the valve, the direction of the equipment is parallel or straightened with the valve body, and check whether the screw holes are aligned.
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Pneumatic control valve failure and its causes - Wuzhong instrument
(1) The conditioning valve does not operate. The symptoms and causes are as follows:
1. No signal, no air source. (1) The air source is not opened, (2) because the water contained in the air source freezes in winter, resulting in the blockage of the air duct or the blockage of the filter and pressure reducing valve, (3) the compressor is faulty; (4) Leakage of air source main pipe.
2． ...
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Structural requirements for thermocouples in Wuzhong instruments
The structure of the thermocouple is to ensure the stable operation of the thermocouple, and the requirements are as follows:
The two thermoelectrodes that make up the thermocouple must be strong on the weld to maintain good quality.
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Classification of Indicating Instruments and Their Advantages and Disadvantages – Wuzhong Instrument
The mechanical deflection angle of the movable part of the surface can be measured and converted, and the size to be measured is directly indicated by the indicator, so it is also called the direct-reading appearance.
According to the working principle, the indication appearance can be divided into magnetoelectric ...
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Valve corrosion and how to fix it
1. The corrosion of the valve is usually understood as the damage to the metal material of the valve under the chemical or electrochemical environmental effect. Because the corrosion phenomenon is presented in the spontaneous interaction between the metal and the surrounding environment, therefore, how to isolate the metal from the surrounding environment or more use non-...
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Wuzhong instrument G1610 slag lock valve introduction
The slag lock valve (bucket valve) is specially designed for the complex working conditions of coal gasification, and is a special hard seal ball valve that can adapt to high temperature, high pressure and high wear resistance working conditions. The slag locking valve is mainly used to solve the problem of coal slurry feeding in the gasification unit and the common problem of medium scaling in the valves used in the black water process pipeline.
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Sealing performance requirements for cryogenic disc valves - Wuzhong instrument
There are two main reasons for the leakage of cryogenic valves, one is internal leakage; The second is leakage.
1) Internal leakage of the valve
The main reason is the deformation of the sealing pair at low temperature.
When the temperature of the medium drops to the point where the data undergoes a phase change, the volume changes ...
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