For abnormal fan operating parameters, the oil temperature upper limit alarm, the oil level lower limit alarm and the vibration upper limit alarm signal can be respectively generated, and the corresponding alarm electric contact is actuated to quickly shut down the faulty fan. The alarm value can be preset by the keyboard. The monitor also has a password lock, remote correction of measured values, and connection with the host computer. Three-parameter combination probe In the three-parameter combination probe, the acquisition of the temperature signal is performed by the semiconductor integrated sensor; the vibration signal is completed by the electric vibration speed sensor; the oil level signal is completed by the self-heating thermal resistance sensor. The connection between the monitor and the combined probe and the analysis of the working process. The connection between the monitor and the probe is from the monitor in the control room to the fan on the cooling tower.
Since multiple probes are connected in parallel on the four serial busbars, short circuits should be prevented in the connections and wires. This problem is only occurred during installation and commissioning. It has occurred once due to negligible wiring, but it rarely occurs in routine maintenance. Therefore, it is recommended to check the resistance between the wires after wiring. Damage to the individual sensors may also cause false stacking of the bus signal, which increases the measured value of the normal sensor. This phenomenon is called a busy fault. Due to the high manufacturing level and high integration of the three-parameter combination probe, the reliability is good. This type of problem does not occur in long-cycle runs. According to the product requirements, the disassembly and assembly of the probe must be carried out after the power is cut off. Since the application, the probe has been disassembled several times due to other reasons, and since it has been carried out according to regulations, no damage to the system components has occurred.
The level measurement of the three-parameter combination probe is achieved using a very small self-heating thermal resistance wire. In the long-term use, the dirt in the lubricating oil adheres to it, and a certain measurement deviation will occur. When the deviation is too large to be corrected by the set calibration value, the inside of the probe should be cleaned as necessary. The method is to remove the probe from the reduction box, repeatedly insert it several times in the cup with clean cleaning gasoline, and slowly lift it up for the last time. After it is fully dried, reinstall it. Since the lubricant itself is relatively clean and the monitor has a function to set the calibration value, the maintenance of such problems is not large. The KR-939B monitor has reliable performance, low cost, good flexibility, and a good user interface, in line with user operating habits. Due to the disk-mounted form, the space is small, which is especially suitable for the transformation of old devices. Luoyang Petrochemical General Plant supplies 8 sets of cooling tower fans, and 3 sets of the system are used. After long-term trials, the effect is good. In the future, 8 fans will be gradually adopted to adopt the system.
Precision punching needle roller series
Our company specializes in film punching needle rollers, packaging film punching needle rollers, aluminum foil punching machines, copper foil punching machines, product quality and processing technology reliability, stability is at the domestic advanced level, and can be produced according to customer requirements A special specification of needle roller and needle ring products. Welcome customers to come and inquire.
Needle roller, also known as needle cylinder. A metal cylinder with steel needles planted on the surface. It is installed in the drafting zone for controlling and carding fibers. It is used on spun silk and wool spinning roving frame, carded wool spinning frame, spun spinning and shaft spinning frame. The main body of the needle roller is a copper cylinder with small holes drilled on the surface and steel needles are planted in the holes. Both ends of the cylinder are equipped with a flange, the surface of which is slightly higher than the needle tip to protect the needle tip from damage. The main parameters of the needle roller are: bottom diameter, outer diameter, needle width, needle height, needle density, needle angle and needle number. In order to adapt to the processing of different types of fibers, the small carding roller on the rotor spinning machine has the saw teeth replaced with needles, also called needle rollers.
Needle Roll, Cold Punching Needle Roll, Embossing Needle, Carding Machine Needle Roll, Film Punching Needle Roll, Aluminum Foil Punching Needle Roll, Non-woven Punching Needle Roll, Heated Punching Needle Roll, Heated Perforated Needle Roller
Changzhou Puyisen Machinery Technology Co., Ltd. , https://www.czsmmsmachine.com