CN-116557308-B - Mixed flow pump set axis adjustment method

Abstract

The invention discloses an axis adjustment method of a mixed flow pump set, which relates to the technical field of water conservancy and hydropower, and comprises the following steps of S1, integrally debugging the mixed flow pump set, installing a weight-resistant plate of a thrust bearing after the pre-installation of a frame is completed, S2, sequentially installing an insulating pad, an insulating sleeve, a thrust tile and a thrust head by taking the weight-resistant plate as a reference surface, and completing the installation of the thrust head, S3, adjusting the gap of the thrust bearing by a jigger to obtain corresponding full-swing degree and net-swing degree, S4, calculating tile-holding gaps of all parts according to the full-swing degree and the net-swing degree of an adjusted shafting, and adjusting an axis according to the tile-holding gaps.

Inventors

• HUANG CHUNPING
• HE YUTING
• JIANG XIAOWU
• WU WEIWEN
• LI SHANGXIAN
• Liu Anda
• ZHU RENFEI
• LIAO CAIYAN

Assignees

• 广东省源天工程有限公司

Dates

Publication Date

20260508

Application Date

20230511

Claims (5)

1. 1. The axial line adjustment method of the mixed flow pump set is applied to the mixed flow pump set and comprises an upper frame, a stator, a thrust bearing, a motor jigger and a pump set guide bearing, and is characterized by comprising the following steps of: s1, carrying out integral debugging on the mixed flow pump set, and installing an anti-weight plate of a thrust bearing after the pre-installation of a frame is completed; S2, sequentially mounting an insulating pad, an insulating sleeve, a thrust tile and a thrust head by taking the weight-resistant plate as a reference surface, and completing the mounting of the thrust head; S3, adjusting the gap of the thrust bearing by utilizing a motor jigger to obtain corresponding full swing degree and net swing degree; and S4, calculating the tile holding gap of each part according to the full swing degree and the net swing degree of each part of the shafting after the adjustment, and adjusting the axis according to the tile holding gap.
2. 2. The method for adjusting the axis of a mixed-flow pump set according to claim 1, wherein the step S1 specifically comprises: S11, measuring the levelness value of the anti-weight plate by using a level meter, and comparing the levelness value with a preset threshold value; s12, when the levelness value is smaller than or equal to the preset threshold value, not adjusting; And S13, when the levelness value is larger than the preset threshold value, adjusting by increasing or decreasing the metal gaskets on the contact surface of the upper frame and the stator.
3. 3. The method for adjusting the axis of a mixed-flow pump set according to claim 1, wherein the step S2 specifically comprises: S21, heating the thrust head until the matched size reaches a preset range value for installation; And S22, sequentially installing the insulating pad, the insulating sleeve, the thrust tile and the thrust head during installation.
4. 4. A method for adjusting the axis of a mixed-flow pump set according to claim 3, wherein S3 specifically comprises: s31, 8-equal-division marking is carried out on the thrust head, marking points are numbered, and a dial indicator is placed on each marking point; s32, pushing the motor jigger, and recording data of the dial indicator when the motor jigger rotates for 45 degrees each time; and S33, obtaining the corresponding full swing degree and net swing degree according to the data of the dial indicator.
5. 5. The method for adjusting the axis of a mixed-flow pump set according to claim 1, wherein the step S4 specifically comprises: Axis adjustment is performed by adding shims or scraping flanges at the thrust bearing.

Description

Mixed flow pump set axis adjustment method Technical Field The invention relates to the technical field of water conservancy and hydropower, in particular to a method for adjusting the axis of a mixed flow pump set. Background At present, in the whole construction process of pump station pump set installation, the axis jigger adjustment of motor and water pump is the most important one construction process, and its construction quality directly influences the stable long-term operation of pump set under the condition of facing complicated operating mode. In the face of continuous improvement of equipment manufacturing and application technology, higher requirements are also put forward on the installation technology of our construction site. The axis adjustment is a core process for the installation of the whole unit, and the quality of the axis adjustment directly influences the safe operation of the water pump. The axis adjustment work of the machine set can be performed, the effects of prolonging the service life of the bearing, reducing the vibration swing degree of the machine set, effectively controlling the temperature rise of bearing oil and the like can be achieved, and the running working condition of the machine set is improved. However, due to manufacturing tolerances, errors in installation, accumulated errors after installation, and the like, the center line of the shaft in operation runs around a track with a certain deflection angle and radius which deviate from the theoretical center line, if the center line is not adjusted in time, the whole service life of the unit is easy to be reduced, and related adjustment processes are lacked in the prior art. Therefore, how to provide a method for adjusting the axis of a mixed-flow pump set, which can solve the above problems, is a problem that needs to be solved by those skilled in the art. Disclosure of Invention In view of the above, the invention provides a method for adjusting the axis of a mixed flow pump set, which can improve the service life of a bearing, reduce the vibration swing of a unit, effectively control the temperature rise of bearing oil and the like, and improve the running condition of the unit. In order to achieve the above purpose, the present invention adopts the following technical scheme: The axial line adjusting method of the mixed flow pump set is applied to the mixed flow pump set and comprises an upper frame, a stator, a thrust bearing, a motor jigger and a pump set guide bearing, and comprises the following steps: s1, carrying out integral debugging on the mixed flow pump set, and installing an anti-weight plate of a thrust bearing after the pre-installation of a frame is completed; S2, sequentially mounting an insulating pad, an insulating sleeve, a thrust tile and a thrust head by taking the weight-resistant plate as a reference surface, and completing the mounting of the thrust head; S3, adjusting the gap of the thrust bearing by utilizing a jigger to obtain corresponding full swing degree and net swing degree; and S4, calculating the tile holding gap of each part according to the full swing degree and the net swing degree of each part of the shafting after the adjustment, and adjusting the axis according to the tile holding gap. Preferably, the S1 specifically includes: S11, measuring the levelness value of the anti-weight plate by using a level meter, and comparing the levelness value with a preset threshold value; s12, when the levelness value is smaller than or equal to the preset threshold value, not adjusting; And S13, when the levelness value is larger than the preset threshold value, adjusting by increasing or decreasing the metal gaskets on the contact surface of the upper frame and the stator. Preferably, the S2 specifically includes: S21, heating the thrust head until the matched size reaches a preset range value for installation; And S22, sequentially installing the insulating pad, the insulating sleeve, the thrust tile and the thrust head during installation. Preferably, the step S3 specifically includes: s31, 8-equal-division marking is carried out on the thrust head, marking points are numbered, and a dial indicator is placed on each marking point; s32, pushing the jigger, and recording data of the dial indicator when the jigger rotates for 45 degrees each time; and S33, obtaining the corresponding full swing degree and net swing degree according to the data of the dial indicator. Preferably, the step S4 specifically comprises axis adjustment by adding a gasket or scraping flange at the thrust shaft. Compared with the prior art, the invention discloses a method for adjusting the axis of the mixed flow pump set, which adopts a static quality control and dynamic axis detection method to adjust the axis of the set. The dynamic jigger data analysis and calculation are used for solving the possible situations of non-vertical axis and tortuous axis, and meeting the stable operation requirement of the pump s