Regarding hydraulic couplings
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What is the impact of using a frequency regulator in a motor on the hydraulic coupling connected to it?
The hydraulic coupling should have no impact; it’s just unclear what the purpose of up-converting the frequency is once you have a hydraulic coupling in place
Does the hydraulic coupler referred to by the poster are the type that cannot adjust speed? Otherwise, if it’s a variable-speed hydraulic coupling, then there’s no need to install an inverter on the motor. Although inverters are more efficient and cost-effective than hydraulic couplings, either one of them will suffice.
There should be no impact; the hydraulic coupling serves to enable soft starting and provides overload protection to safeguard the motor and the main machine.
Yes, a hydraulic coupling can be used to adjust the speed, so there is no need to install an inverter motor. Of course, installing it will have no effect on the coupler.
A hydraulic coupler can be used to adjust the speed; I’m not sure what the purpose of using an inverter-driven motor is
Inverters are mainly used to adjust speed. In fact, it has a significant impact.
A hydraulic coupling serves to enable soft starting, as well as providing overload protection to safeguard the motor. Is it still necessary to use variable frequency speed control?
A hydraulic coupler is a speed control device. It’s not clear whether adding variable frequency control to the motor is true! ? If the motor’s speed is variable, it is crucial to know whether the control signal it receives is the pressure at the compressor outlet, the flow rate, or the rotational speed My understanding is that if it’s true that the motor has an inverter added, the motor may reduce its speed in order to save electricity; in order to meet the requirements for flow rate and pressure in the process, the opening degree of the scoop tube in the hydraulic coupler will be increased accordingly.
-----What you are referring to is a hydraulic torque converter, not a hydraulic coupler.
The poster is definitely not referring to a speed-regulating type, so there’s no need for discussions about the contradictions between variable frequency and speed regulation.
I think installing a hydraulic coupler along with an inverter motor is a bit redundant, as both can be used to adjust the speed.
During high-speed startup, the soft-start feature of the frequency converter and that of the hydraulic coupler operate simultaneously, with no significant impact. However, if low-speed operation of the inverter is used for speed control, it is necessary to analyze whether the low-speed transmission of the hydraulic coupling will be unable to handle the load torque.
It should have no impact; the hydraulic coupling you’re using isn’t for speed control, is it?
Actually, what you’re referring to is a hydraulic coupling, which cannot adjust its speed. The frequency converter has functions of soft start and speed control; when used in conjunction with a hydraulic coupling, I believe there is no impact at high speeds, but it has a significant effect at low speeds. It’s better to change it.
With a hydraulic coupler, there is no need for an inverter motor; an inverter motor requires an inverter controller in order to achieve speed control.
It depends on the power of the motor. Hydraulic couplings are less efficient in terms of energy utilization compared to variable frequency drives; however, the higher the motor power, the greater the cost associated with using variable frequency drives. Moreover, domestic technology for high-power variable frequency drives has not yet developed sufficiently. For large equipment such as blowers, both hydraulic couplings and variable frequency drives are used in China, with hydraulic couplings being the most widely used.
Everyone should actively discuss and make progress together.
What is the difference between hydraulic coupling and variable pitch? :L
If variable frequency drive technology is to be used, it must be done properly; otherwise, improper operation can lead to problems. In my opinion, a coupling is sufficient for this purpose. The technology related to couplings is well-developed in China, and many established companies have decades of experience using them.