A pump installation inspection method

Abstract

The invention relates to a pump mounting inspection method. The pump mounting inspection method is characterized by comprising the following steps: a, primary calibration of a pump; b, secondary calibration of the pump; and c, third calibration of the pump. The third calibration of the pump comprises the following steps: (1) in a pipeline mounting process, mounting a plurality of guide brackets (9) and an adjustable bracket; (2) arranging inspection points (21) at the circumferential edges of the surfaces of two corresponding pumping hole pipeline flange (11) and pumping hole flange (12); (3)carrying out pressure test blowing of a pipeline; (4) adjusting a pipe section bracket if the two flanges are not in compliance with specifications and requirements in a natural state; and (5) centering the first flange of the pumping hole pipeline and the pumping hole flange for acceptance check. The inspection method provided by the invention has the advantages that design is comprehensive, thesteps are rigorous, operability is high, and the distance from the pumping hole flange to the pipeline flange and the concentricity of the centers of the pipeline flange and the pump flange of the pipeline at the inlet and outlet of the pump in the natural state as well as the depth of parallelism of a pipeline flange face and a pump flange face can be controlled effectively, so that stressless pipeline connection of the pump is achieved.

Description

technical field [0001] The invention relates to a method for inspecting pumping pipelines, in particular to a method for inspecting pump installation. Background technique [0002] National Standard Fan, Compressor, Pump Installation Engineering Construction and Acceptance Code (GB50275-2010), in Chapter 4, Pump Section 1, General Regulations, it is pointed out that the suction pipe and output pipe should have their own supports, and the pump should not directly bear the pressure of the pipe. Weight; after the pipeline is connected to the pump, the original alignment accuracy of the pump should be rechecked, and the pipeline should be adjusted if deviation is found due to the pipeline connection. [0003] At present, the difficulty in pump installation is that the concentricity of the pump inlet and outlet pipes in a free state and the center of the pump flange and the parallelism between the pipe flange surface and the pump flange surface are difficult to meet the specifica...

AI Technical Summary

Problems solved by technology

In foreign countries, American standards have very strict requirements on the inlet and outlet flange nozzles of the pump, and the final calibration of the pump may show that the distance between the pump inlet flange is too far away, or the coaxiality does not meet the requirements, etc., and the acceptance is very difficult to pass.

In the construction inspection process of foreign pump and pipeline projects, the success rate of one-time calibration is extremely low, often resulting in a lot of rework, wasting manpower and material resources

Images