Blog

04

2018

/

06

Analysis of Noise Causes of Pressure Reducing Valve

The causes of noise can be divided into the following three categories: 1, the valve mechanical vibration noise; 2, fluid dynamics noise; 3, aerodynamic noise. 1. mechanical vibration noise pressure reducing valve parts in the fluid flow will produce mechanical vibration, mechanical vibration can be divided into two forms: ① low frequency vibration. This vibration is caused by the jet and pulsation of the medium, which is caused by the flow rate at the outlet of the valve is too fast, the pipeline arrangement is unreasonable, and the rigidity of the movable parts of the valve is insufficient. ② High frequency vibration. This vibration in the natural frequency of the valve and the medium flow caused by the excitation frequency is consistent, hydraulic

01

2018

/

06

Maintenance principles during valve operation

As follows: 1. keep the external and movable parts of the valve clean and protect the integrity of the valve paint. The surface of the valve, the trapezoidal thread on the valve stem and the valve stem nut, the sliding part of the valve stem nut and the bracket, and the gears, worm gears and other components are easy to deposit a lot of dust, oil and media residue and other dirt, causing wear and corrosion to the valve. Therefore, should always keep the valve clean. The general dust on the valve is suitable for brush sweeping and compressed air blowing, and even can be brushed with copper wire until the processing surface and mating surface show metallic luster, and the paint surface shows the natural color of the paint. 2. maintain valve lubrication, valve trapezoidal thread, stem nut and bracket

23

2018

/

05

Use and Maintenance of High Pressure Valve

In the power plant high-pressure valve is a very important equipment, the production of power plants have a great impact on the form and characteristics of high-pressure valve analysis, to better understand its working principle and types, but also in the use and maintenance of better development. In the two single-phase media of gas and water, the pipeline valve can better form a very safe and reliable use. In the thermal power plant, the steam system in the drainage system of the valve is not paid attention to, but in the regular drainage system, the valve has been widely used. In the process of continuous development of power plants, the capacity of units will continue to increase.

16

2018

/

05

How to deal with the reducer motor damp

Reducer motor damp is a big problem in many wet working environment enterprises. The air humidity is high, and many reducer motors are not sealed, so the probability of being affected with moisture is relatively large. So how to avoid the reducer motor from being affected with moisture, and how to deal with the motor after being affected with moisture, Wuhan Xiete Valve Technology Co., Ltd. will discuss the above problems with everyone. In the actual production of many enterprises, after a part of the reducer motor is placed for a period of time, it is found that the insulation resistance of the motor winding is reduced when it is enabled again, and sometimes the insulation breakdown of the motor coil occurs. This is the performance of the motor affected with moisture, which not only damages the machine, but also easily

14

2018

/

05

Self-operated electric control valve use and maintenance methods

With the rapid development of China's industry, electric control valve in metallurgy, petrochemical and other fields of application more and more widely, its stability, reliability is becoming more and more important, its working condition will directly affect the automatic control process, Wuhan Xiete Valve Technology Co., Ltd. will elaborate on the use and maintenance of electric control valve. Precautions for installation and use of the newly designed and installed control system. In order to ensure that the regulating valve can work normally when driving and make the system operate safely, before installing the new valve, first check whether the nameplate mark on the valve is consistent with the design requirements. The following items shall also be commissioned. Basic error limit;

09

2018

/

05

Maintenance method of electric two-way valve

1. that the electric two-way valve does not work after being energized, check whether the power supply wiring is defective → rewire and connect the connector to check whether the power supply voltage is in the working range → adjust the normal position range to check whether the coil is deselded → reweld the coil short circuit → replace the coil to check whether the working pressure difference of the coil is inappropriate → adjust the pressure difference → or replace the matching electric valve fluid temperature of the matching electric valve is too high → replace the matching electric valve with impurities to check valve cleaning, if the seal is damaged, replace the seal and install the filter. The liquid viscosity is too high, the frequency is too high and the service life has reached → replace the product 2.. The electric two-way valve cannot close the main valve core or iron movement

07

2018

/

05

Shipment of balanced pneumatic stop valve

Balanced pneumatic stop valve is shipped. This product is our invention patent. It has the advantages of remote control, opening and closing balance, flexible action, reliable sealing and so on, and is recognized by customers.

03

2018

/

05

What are the anti-freezing protection measures of the trap

Selection, installation of the appropriate trap as long as there is steam through, there will be no freezing problems. However, if the steam is cut off, the steam condensate will form a vacuum in the heat exchanger or the accompanying pipe. This prevents condensation from freely draining out of the system before freezing occurs. Therefore, a vacuum breaker should be installed between the discharge equipment and the trap. If gravity discharge is not used from the trap to the return pipe, the trap and discharge pipeline should be discharged manually or automatically using a discharge pipe with antifreeze measures. Also, when multiple traps are installed together in the trap station, the trap insulation can prevent freezing. Anti-

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