The main feature of nuclear power valve - Wuzhong instrument

For valves in operation, all kinds of valves should be complete and defective. For example, the bolts on the flange and bracket should not be short, and the threads should be free of defects, and no loosening is allowed. The fastening nut on the handwheel, if found to be loose, should be ...

1. The safety valve should have the equipment to prevent the hammer from moving by itself and the guide frame to limit the lever from deviating, and the spring-type safety valve should have the equipment to raise the handle and prevent the adjustment screws from being twisted at will. 2. It should be installed straight in the pot merchant, the container ...

Solenoid valve is an industrial equipment controlled by solenoids, and is a basic element of automation used to control fluids, which belongs to actuators and is not limited to hydraulics and pneumatics. It is used in industrial control systems to adjust the direction, flow rate, speed and other parameters of the medium. Solenoid valves can be used with different circuits to ...

Pneumatic butterfly valve additional code: BD insulation butterfly valve, SD telescopic butterfly valve, TLD desulfurization butterfly valve, DH check butterfly valve, DKS fast butterfly valve, FDBD square louver butterfly valve; Butterfly valve code: D indicates butterfly valve Transmission code: manual ...

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)

Digital Factory Outline The use of CAD and PDM systems, ERP and other related information systems have been appropriately popularized in many production factories at present, and Wu Zhong has completed the "digital factory" skills and systems after the key link of "how to make → process planning".

Valves often present some troublesome problems in the process of use, such as the valve is not closed tightly, not tight, so what should I do? Under normal circumstances, if it is not tightly closed, first admit whether the valve is closed in place, if it has been closed in place, it still exists.

1. The valve position of the electric actuator is lost: 1) Battery power is lost When the incremental encoder is selected to measure the stroke, it is necessary for the fulfillment mechanism to have a battery as an auxiliary power supply, the AC power supply disappears, and the change of the valve position of the electric actuator can still be detected by the incremental encoder.

1. Introduction to gate valves Gate valve refers to the valve in which the opening and closing parts (rams) move in the straight direction of the medium (channel axis) to complete the opening and closing. Among the various types of valves, gate valves are the most widely used one. Gate valves are mainly used as shut-off medium in pipelines, i.e. ...

From simple shut-off valves to a wide range of valves in very complex automatic control systems, the varieties and standards are very complex. The valve can be used to control the activities of various types of fluids such as air, water, steam, various corrosive media, oil, liquid metal and other media. It is understood that from 2015 to 2018, ...

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 ...

The commonly used medium for valve pressure testing is water, oil, air, steam, nitrogen, etc., and the pressure testing methods of various valves are as follows. (1) Globe valve and throttle valve For the strength test of globe valve and throttle valve, the assembled valve is usually placed in the pressure test frame, the valve disc is opened, and the medium is injected into the ...

Stainless steel globe valve is a kind of globe valve, the specific stainless steel raw materials are CF8, CF3, CF8M, CF3M, different raw materials are selected, can be separated from water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Stainless steel globe valves are divided into manual stainless steel shut-offs.

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...

1. Why does the double-seat valve vibrate briefly during small opening operation For a single core, when the medium is a flow-open type, the valve has good stability; When the medium is a flow-closed type, the stability of the valve is poor. The double-seat valve has two spools, the lower spool is in the flow closed and the upper spool is in the flow open, so that in the small opening ...

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.

Double-seat cast ball angle valve The nominal diameter is 40-200 mm Nominal pressure ANSI 125, 150, 300, 600JIS10, 16, 20, 30, 40K PN1.6, 4.0, 6.4MPa Connection type Flange...

Valve application requirements (1) General gate valves, ball valves, and globe valves are prohibited from regulating according to their structural characteristics. However, in process design, it is widely used for mediation. Due to the conditioning application, the valve seal is in a throttling state for a long time, and the impurities in the oil wash the seal, damaging the seal.

When using stainless steel multistage pumps, it is first necessary to confirm the usefulness and functional parameters of the multistage pump and select the pump type. Criteria and basis for the selection of multistage pumps: 1. Make the type and function of the selected multistage pump fit the process parameters such as flow, head, pressure, temperature, NPSH, suction stroke, etc.

1) Casting: a kind of data molding method. The molten metal liquid is placed into the mold of the desired shape, allowed to condense, cooled and then removed from the product. 2) Forging: After heating the metal profile ...