Selection and maintenance of multistage pumps——Wuzhong instrument

Nowadays, the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety risks to the installation project. Therefore, it is necessary to introduce to you the inspection of innovative valves. At present, the valve market dealers mainly exist in the valve counterfeiting ...

1. What is a chemical centrifugal pump? Answer: It is a machine that adds liquid energy by increasing the effect of centrifugal force through the impeller to increase the mechanical energy of the liquid, so as to transport the liquid. 2. What are the characteristics of chemical centrifugal pumps? Answer...

　　First, the effect of pipeline identification Why do you need to do pipeline identification? Intent: To facilitate the identification of substances in industrial pipelines, ensure safe production, and avoid misjudgment in operation and equipment maintenance. Carry out ...

In the process control system, the control valve accepts the control signal of the control instrument, directly touches with the fluid, adjusts the flow of the fluid, and controls the flow, pressure, temperature, liquid level and other elements in the system, so it understands the fundamental structure and characteristics of the control valve, and selects it correctly according to the process conditions of the system. ...

The basic structure of the centrifugal pump is composed of six parts, namely the impeller, the pump body, the pump shaft, the bearing, the sealing ring, and the stuffing box. 1. The impeller is the core part of the centrifugal pump, its speed is high and the output is large, and the blades on the impeller play a role in the ...

(1) Check whether there is loosening in the multistage pump pipeline and joint. Turn the multistage pump by hand to see if the multistage pump is sensitive. (2) Lubricate the bearing oil in the bearing body, observe the oil level at the center line of the oil standard, and replace or replenish the lubricating oil in time. (3)、 ...

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 ...

1. Units and scales (scales) The scale (scale) unit of the temperature gauge is the Celsius temperature (°C). 2. Detect (measure) the penetration length of the element The length of the penetration should be selected in such a way as to insert the detection (test) element ...

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.

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 concept of professionalism, dedication, innovation and transcendence.

Nuclear power valves are essentially the same as those used for thermal power generation, with gate valves mainly used for high-pressure large-diameter piping, butterfly valves for low-pressure large-diameter piping, and most of the auxiliary piping for small-diameter shut-off valves or angle globe valves. Check valves, safety valves and control valves etc. are also related to other collar valves.

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 float valve seat, when the valve is in two different states, full open and fully closed, the fluid is ...

　　A solution to poor sealing function 1) Use unbalanced force to add seal specific pressure method The sealing pressure of the actuator on the valve core is certain, and when the unbalanced force has a tendency to open the valve core, the sealing force of the valve core is two forces.

Valve is a device used by Gongliang to control the direction, pressure and flow of fluid in the fluid system. A valve is a device that allows the flow or suspension of the medium (liquid, gas, powder) in the piping and equipment, and can control its flow. The valve is a controlling part in the pipeline fluid delivery system, ...

1. Accounting for traffic The calculation of the flow rate can also be confirmed by referring to the capabilities of fluid handling machinery such as pumps and compressors. Sometimes, a combination of methods is used to confirm. 2. Confirmation of the differential pressure (1) Put the conditioning valve before and after ...

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.

1. The signal valve pushed by the control box does not move. Under the condition that the positioner is installed, the pneumatically adjustable butterfly valve is equipped with a solenoid valve. The weak current of the solenoid valve affects the information output of the control box, and the valve cannot withstand the data signal and cannot work normally. ...

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.

1. Because the multi-layer soft and hard stacked sealing ring is fixed on the valve plate, when the valve plate is normally open, the medium forms a frontal scouring on its sealing surface, and the soft sealing belt in the metal sheet interlayer is washed out, which directly affects the sealing performance. Second, by ...

Two-position five-way solenoid valve is a pneumatic component commonly used in gas-electric automatic control system, its main use is to control the double-acting cylinder to complete the automatic switching of the air circuit, widely used in the pneumatic equipment of various industrial parts, to complete the automatic control and long-distance operation in the production process, it has the ability to ...