Supports and hangers for pump inlets and outlets

How could a spring bracket be installed at the pump’s inlet? Guide frames and supports are installed at the inlet, while spring frames are installed at the outlet; the springs are adjusted according to the forces acting on the pipe ends! Ensure the safety of the pump!

Since vibration is generated during pump operation, spring-mounted supports should be used, allowing for free adjustment to prevent mechanical damage!

For large pumps operating in high-temperature and high-pressure environments, the type of support to be used at the pump inlet should preferably be determined based on stress calculation results.

When considering this issue from the perspective of reducing the stress on the inlet and outlet ports of the pump, the same applies to other equipment as well: efforts should be made to prevent the ports of these devices from being subjected to excessive loads (pipeline fittings), so as not to affect their performance and service life. . .

The relevant information can be found in the \"National Training Materials for Assessing and Certifying Personnel Involved in the Design of Pressure Pipelines.\" For the horizontal suction piping of pumps, adjustable supports should be installed on the section of the pipe that is close to the pump; suspension brackets or spring suspension brackets can also be used. When the piping connected to the pump operates at normal temperatures, fixed supports or guide supports should be installed as close as possible to the pump outlet； When the pump outlet nozzle is oriented vertically upward, a support should be installed at the bend closest to the pump, outside the pump foundation; alternatively, a hanger can be placed at the bend directly above the nozzle. In my opinion, the type of pipe rack to be used should be determined based on the specific circumstances

I agree with the person above; the specifics vary, as different brackets are used and the installation requirements for those brackets also differ. :lol

““How is it possible to install a spring bracket at the pump inlet?” Please explain the rationale on the third floor, as we have seen many cases where spring brackets are used at the pump inlet. In our understanding, the type of installation should simply meet the allowable forces and torques on the pipe nozzle when the pump is in cold or hot conditions.

After reading the above introduction, I’m even more confused

Stress calculation is essentially required for pump pipelines – in order to ensure that the stresses on the pump nozzles remain within acceptable limits, adjustable rigid supports should be used at the first support structure along the pipeline, near the nozzle, during the stress analysis. Whether guides are needed depends on the results of the calculations; other adjustment methods should be employed as much as possible to keep the stresses on the pump nozzles within acceptable limits, and springs should be avoided. The reasons are as follows: 1. To prevent vibrations, spring-based supports are not suitable; some people have said the opposite, but this is incorrect. Compared to rigid supports, spring supports reduce the stiffness of the pipeline, which is detrimental to its resistance to seismic forces. Those interested can use CaesarII to calculate the natural frequency of the pipeline. 2. It’s not necessary. In the case of straight pipelines, unless the temperature is extremely high – over 300 or 400 degrees Celsius, to the extent that the pipeline layout cannot accommodate the resulting displacements – then it becomes a question of whether to use bellows. If the pipeline layout isn’t particularly poor, there’s no need to use springs to ensure that the stress on the pump nozzle remains within acceptable limits. This is based on my experience in designing pump pipelines. 3. To facilitate stress-free installation of the pump outlet, the use of springs should also be avoided. If anyone knows what stress-free installation of pipe outlets means and how to carry it out in practice, it will be easier for me to explain. Generally, the pipe outlets of moving equipment are installed in a stress-free manner. In simple terms, for other types of equipment, the flanges are installed first before the pipes are connected; whereas for moving equipment, the flanges at the pipe outlet are temporarily fixed to the frame first, and once all the pipes have been welded together, they are then connected to the equipment’s flanges. When installing the flanges, alignment is achieved by adjusting the first pipe support. For gas pipelines, such as compressor pipelines, there is no difference between using rigid adjustable supports and spring supports for adjustment and leveling; in most cases, using spring supports for this purpose is safer and more reliable. For liquid pipelines, such as pump pipelines, if springs are used in the first pipe support, it forces people to use spring-mounted supports for leveling purposes. However, liquid pipelines cannot be leveled using spring-mounted supports——because the loading requirements for the springs in these pipelines are determined based on the condition where the pipeline is filled with liquid. When installing the pipeline, it is empty; so try breaking off the fixing pins of the springs while attempting to level the flanges Make another adjustable rigid bracket under the spring? Never seen it! What was mentioned above applies to straight pipelines. For push-out pipelines, since there is no requirement for straight sections, elbow joints can be used directly in place of straight sections. If the temperature is not high and there is enough space around, it is possible to do without springs. I think it’s acceptable to use springs when no other option is available. For push-out pipelines, large pumps are generally used, and there is a requirement for straight sections in the inlet pipeline; it’s difficult to avoid using springs in such cases, so springs are usually the only option. All of the above refers to the first pipe support at the pipeline outlet. This post was last edited by spidi on 2007-12-31 at 16:54