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The relationship between motor operating temperature and temperature rise

Temperature and temperature rise are two parameters that are difficult to circumvent for any motor product. The reliability and safety of the motor can be judged by the operation temperature and winding temperature rise of various parts of the motor. How to measure the temperature and temperature rise of the motor?

2021

05-06

What are the factors that affect the service life of stepper motors?

1. Its own quality There are internal factors and external factors that affect the service life of the stepping motor, and its own quality is the internal factor. If the motor manufacturer adopts good production materials, exquisite production technology and strict inspection links, the quality of the stepping motor can be well guaranteed. , so that it can have a longer-term application in practical applications.

2021

03-25

How to lubricate the gear reducer of the motor?

When the peripheral speed of the gear of the reducer is greater than 12m/S, oil injection lubrication should be used, that is, the oil pump oil supply station supplies oil with a certain pressure, and the lubricating oil is sprayed onto the meshing surface of the gear teeth by the nozzle. When v≤25m/s, the nozzle can be located on the side where the gear teeth are engaged or on the whistle side; when v>25m/s, the nozzle should be located on the side where the gear teeth whistle out, so that the newly meshed gear can be cooled in time by lubricating oil. The gear teeth are also lubricated.

2021

03-25

What is the cause of valve motor failure

Valve motor failure analysis Low protection level: DENSO's special valve motor is a fully enclosed squirrel-cage structure with short-term intermittent duty (10 min) self-cooling. A low protection level will cause the motor cavity to be wet or dust and other foreign objects intrude, and the motor insulation resistance will drop and cause damage. Improper packaging, transportation and storage: The valve electrical packaging should be protected from rain, moisture and dust, and the packaging should be firm and reliable. Rainproof measures should be taken during transportation, and the products should be stored in a ventilated and dry place after arriving at the site, and should not be stored in the open air.

2021

03-25

Common faults and maintenance methods of valve motors

Low protection level: The valve motor provided by DENSO is a fully enclosed squirrel-cage structure and self-cooling with short-term intermittent duty (10min). According to the requirements of GB4942.1-85, the protection level is IP44 and the protection level is IP68. Different valve operating conditions and environments require different protection levels. A low protection level will cause the motor cavity to be wet or dust and other foreign objects intrude, and the motor insulation resistance will drop and cause damage.

2021

03-25

The reason for the failure of the valve motor

Improper control of valve motor selection and stroke position adjustment: There are two important parameters in the valve electrical installation. ① The opening and closing torque value should include the actual working torque value of the valve plus the torque value of the valve itself. The opening and closing torque value affects the use of the valve. Large force is easy to break, and small force is easy to leak. There should be enough margin in the selection and matching (generally, it is required to be 1.1~1.3 times larger than the actual operating torque value of the valve).

2021

03-25

Introduction and characteristics of ball valve

The main features of the ball valve are as follows: 1 The ball valve has low fluid resistance and has a flow resistance (actually zero) Ball valves generally have two structures of reduced diameter and non-reduced diameter channels. Regardless of the structure, the flow resistance coefficient of the ball valve is relatively small. Especially the so-called full-flow type, that is, the ball valve without reducing the diameter, because its channel diameter is equal to the inner diameter of the pipeline, the local resistance loss is only the frictional resistance of the pipeline of the same length, that is, among all the valves, this kind of ball valve has the smallest flow resistance. In the rocket launch and its test system, the resistance of the transmission pipeline is required to be as small as possible. There are two ways to reduce the resistance of the pipeline system: one is to reduce the fluid flow rate, for which it is necessary to increase the diameter of the pipe and the valve, which often has an adverse effect on the economy of the pipeline system, especially for low-temperature delivery system fluids. Hydrogen is unfavorable; one is to reduce the local resistance of the valve, so the ball valve naturally becomes the choice.

2021

03-25

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