Multi-stage centrifugal pump rotor displacement control system
A technology of displacement control and control system, applied in the field of centrifugal pumps, can solve problems such as inability of the pump room operator to distinguish, large axial displacement of the balance plate, etc., and achieve the effect of avoiding huge damage and related adverse effects
Inactive Publication Date: 2019-03-08
CHANGSHA CANON GENERAL PUMPS
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Problems solved by technology
[0004] The purpose of the present invention is to provide a multistage centrifugal pump rotor displacement control system for the defects and deficiencies of the prior art. The defect that causes a large axial displacement and cannot be identified by the pump room operator under the existing conditions
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[0018] see Figure 1-Figure 4 As shown, the technical solution adopted in this specific embodiment is: it includes a pump body, the rotor 1 is rotatably installed in the pump body, the pump body includes a suction section 2, a middle section 3 and a discharge section 6, and the suction section 2 is arranged on the discharge section The left side of section 6, the middle section 3 is arranged on the left and right sides of the discharge section 6, the suction section 2 is provided with a suction port, the discharge section 6 is provided with a discharge port, and the middle section 3 is provided with several impellers 4 , the impeller 4 is fixedly mounted on the rotor 1, the middle section 3 is provided with a guide vane 5 corresponding to the impeller 4, a shaft end nut 8 is installed on the right end of the rotor 1, and the tail end of the rotor The shaft end nut 8 is installed to solve the problem of uneven shaft end due to the shaft center process hole and the replacement o...
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The invention discloses a multi-stage centrifugal pump rotor displacement control system, and relates to the technical field of centrifugal pumps. The multi-stage centrifugal pump rotor displacement control system comprises a pump body, and a rotor is rotatably installed in the pump body; the pump body comprises a suction section, middle sections and a discharge section, the suction section is arranged on the left side of the discharge section, and the middle sections are arranged on the left side and the right side of the discharge section; the suction section is provided with a suction port;the discharge section is provided with a discharge port; each middle section is provided with a plurality of impellers, the impellers are fixedly installed on the rotor, and each middle section is provided with guide vanes corresponding to the impellers; and a shaft end nut is installed at the end of the right side of the rotor, a bearing end cover is arranged on the right side of the shaft end nut, and an electric eddy sensor system is arranged on the bearing end cover. According to the multi-stage centrifugal pump rotor displacement control system, axial clearance or instantaneous displacement changes of the rotor and a stator can be measured, the system can give an alarm to prompt that shutdown overhaul needs to be conducted to replace parts such as bearings and friction pairs when therotor displacement reaches a set prewarning value, and then the condition that huge damage and related adverse effects of a pump room system are caused when the pump rotor and the stator generate direct and acute friction under the high-speed running condition due to the too large axial displacement is avoided.
Description
technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a multistage centrifugal pump rotor displacement control system. Background technique [0002] A multistage centrifugal pump is a collection of two or more centrifugal pumps with the same function. In terms of the fluid channel structure, the medium pressure relief port of the first stage communicates with the inlet of the second stage, and the medium discharge port of the second stage communicates with the inlet of the second stage. The pressure port communicates with the inlet of the third stage, and the mechanism in series in this way forms a multistage centrifugal pump. The significance of the multistage centrifugal pump is to increase the set pressure. [0003] The axial displacement of the existing multistage centrifugal pump is a very important signal. Excessive axial displacement will cause severe friction between the rotor and the stator under high-speed opera...
Claims
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IPC IPC(8): F04D1/08F04D15/00F04D29/22
CPCF04D1/08F04D15/00F04D15/0077F04D15/0088F04D29/22
Inventor 彭胜前张幸欧启鹏徐坚陈博群龚贤辉罗瑞祥
Owner CHANGSHA CANON GENERAL PUMPS