阅读说明：本技术 一种涡轮发电机组轴系不对中的检测与调整方法 (Method for detecting and adjusting misalignment of shafting of turbine generator set ) 是由 李瑞芳 吉曾玉 卢平安 孟玉兰 于 2019-07-24 设计创作，主要内容包括：本发明涉及机电设备装配的涡轮发电机组轴系不对中的检测与调整方法,包括以下步骤：轴系初步定位、测量位置选定、静止轴系锁定、测量位置描述、不对中偏差调整；轴系初步定位时,利用磁力千分表调整轴系设备的轴线位移偏差,使其设定在0.15-0.35mm的范围之内；测量位置选定时,在前端轴系转子处设置A1测量面,在后端轴系转子处设置A2测量面；静止轴系锁定时,在各测量面分别设置测量面探测器,同时锁定静止轴系；测量位置描述时,用钟面角度法描述测量位置；不对中偏差调整时,校正平行不对中和角度不对中偏差值,利用各调整部件校正平行不对中和角度不对中的偏差,实现不对中偏差调整。本发明具有检测科学、调整方便、数据重复性好和过程精确可靠的优点。(The invention relates to a method for detecting and adjusting misalignment of a turbine generator set shafting assembled by electromechanical equipment, which comprises the following steps: the method comprises the following steps of shafting preliminary positioning, measurement position selection, static shafting locking, measurement position description and misalignment deviation adjustment; when the shafting is initially positioned, the magnetic dial indicator is used for adjusting the axis displacement deviation of shafting equipment to be set within the range of 0.15-0.35 mm; when the measuring position is selected, an A1 measuring surface is arranged at the front end shafting rotor, and an A2 measuring surface is arranged at the rear end shafting rotor; when the static shaft system is locked, the measuring surface detectors are respectively arranged on each measuring surface, and the static shaft system is locked; when the measuring position is described, the measuring position is described by a clock face angle method; and when the misalignment deviation is adjusted, the misalignment deviation value of the parallel misalignment angle is corrected, and the misalignment deviation adjustment is realized by correcting the misalignment deviation of the parallel misalignment angle by using each adjusting component. The invention has the advantages of scientific detection, convenient adjustment, good data repeatability and accurate and reliable process.)

1. A method for detecting and adjusting misalignment of a shaft system of a turbine generator set comprises the following steps: shafting preliminary positioning, measurement position select, static shafting locking, measurement position description, misalignment deviation adjustment, its characterized in that: when the shafting is initially positioned, the magnetic dial indicator is used for adjusting the axis displacement deviation of shafting equipment to be set within the range of 0.15-0.35 mm; when the measuring position is selected, an A1 measuring surface (9) is arranged at the front end shafting rotor (7), and an A2 measuring surface (17) is arranged at the rear end shafting rotor (15); when the static shaft system is locked, arranging an A1 measuring surface detector (8) at an A1 measuring surface (9), arranging an A2 measuring surface detector (18) at an A2 measuring surface (17), and locking the static shaft system; when the measuring position is described, the measuring position is described by a clock face angle method, namely, at the clock positions of 9 points, 12 points and 3 points on the clock surface; when misalignment deviation is adjusted, the deviation value of parallel misalignment and angle misalignment is corrected, and the misalignment deviation adjustment is realized by utilizing the components such as the front end height adjusting bolt (20), the rear end height adjusting bolt (21), the front end horizontal adjusting bolt (22), the rear end horizontal adjusting bolt (23), the front end adjusting block (24), the rear end adjusting block (25), the front end distance adjusting sheet (26), the rear end distance adjusting sheet (27) and the like.

Technical Field

The invention relates to an electromechanical device assembly technology, in particular to a method for detecting and adjusting misalignment of a turbine generator set shaft system.

Background

In the operation process of the turbine generator set, misalignment of a rotating shaft system is a main factor causing operation failure. The traditional magnetic dial gauge centering detection method can only carry out initial detection and coarse adjustment, is easy to generate deviation, influences detection precision and reduces adjustment effect.

Disclosure of Invention

The invention aims to provide a method for detecting and adjusting misalignment of a turbine generator set shafting, which can reliably improve the detection precision and effectively ensure the adjustment effect.

A method for detecting and adjusting misalignment of a turbine generator set shaft system is designed, and comprises the following steps: shafting preliminary positioning, measurement position select, static shafting locking, measurement position description, misalignment deviation adjustment, its characterized in that: when the shafting is initially positioned, the magnetic dial indicator is used for adjusting the axis displacement deviation of shafting equipment to be set within the range of 0.15-0.35 mm; when the measuring position is selected, an A1 measuring surface is arranged at the front end shafting rotor, and an A2 measuring surface is arranged at the rear end shafting rotor; when the static shaft system is locked, arranging an A1 measuring surface detector at an A1 measuring surface, arranging an A2 measuring surface detector at an A2 measuring surface, and locking the static shaft system; when the measuring position is described, the measuring position is described by a clock face angle method, namely, at the clock positions of 9 points, 12 points and 3 points on the clock surface; when the misalignment deviation is adjusted, the deviation value of the parallel misalignment deviation and the misalignment deviation of the angle is corrected, and the misalignment deviation adjustment is realized by utilizing the front end height adjusting bolt, the rear end height adjusting bolt, the front end horizontal adjusting bolt, the rear end horizontal adjusting bolt, the front end adjusting block, the rear end adjusting block, the front end distance adjusting sheet, the rear end distance adjusting sheet and other components.

The invention has the beneficial technical effects that: when the shafting is preliminarily positioned, the axis displacement deviation of the shafting to be adjusted is set within the range of 0.15-0.35mm by utilizing the magnetic dial indicator, so that the shafting misalignment detection and adjustment process can be accelerated, when the static shafting is locked, the A1 measuring surface detector is arranged at the A1 measuring surface, the A2 measuring surface detector is arranged at the A2 measuring surface, and meanwhile, the static shafting is locked, so that the moving centering adjustment can be performed by referring to the reference of the static shafting. In addition, when the position is measured, the measuring position is described by a clock face angle method, namely, the measuring position is described at the clock positions of 9 points, 12 points and 3 points on the clock surface, so that the detection and adjustment of the angle misalignment are facilitated. The invention also has the advantages of scientific detection, convenient adjustment, good data repeatability and accurate and reliable process.

Drawings

FIG. 1 is a schematic structural view;

fig. 2 is a schematic circuit diagram.

In the figure, 1, an expander unit, 2, a generator unit, 3, a base adjusting unit, 4, a measurement and control unit, 5, a turbine expander, 6, a reduction box, 7, a front end shafting rotor, 8, an A1 measuring surface detector, 9, an A1 measuring surface, 10, an A1 measuring surface support M, 11, a shaft coupling, 12, a front end flange, 13, a fastening bolt, 14, a generator, 15, a rear end shafting rotor, 16, a rear end flange, 17, an A2 measuring surface, 18, an A2 measuring surface detector, 19, an A2 measuring surface support S, 20, a front end height adjusting bolt, 21, a rear end height adjusting bolt, 22, a front end horizontal adjusting bolt, 23, a rear end horizontal adjusting bolt, 24, a front end adjusting block, 25, a rear end adjusting block, 26, a front end distance adjusting sheet, 27, a rear distance adjusting sheet, 28, a CCD detector S, 29, a CCD detector M, 30, a signal conversion circuit, 31, a touch screen, 32. drive circuit, 33, interface circuit, 34, microprocessor, 35, memory, 36, ROM memory.

Detailed Description

The invention is further illustrated in two parts by the following examples.

The first part, the structure is composed.

The embodiment comprises the following steps: the system comprises an expander unit (1), a generator unit (2), a base adjusting unit (3) and a measurement and control unit (4);

the expander unit (1) comprises; the device comprises a turbo expander (5), a reduction gearbox (6), a front end shaft system rotor (7), an A1 measuring surface detector (8), an A1 measuring surface (9), an A1 measuring surface support M (10), a coupler (11), a front end flange (12) and a fastening bolt (13);

the generator unit (2) comprises: the device comprises a generator (14), a rear end shafting rotor (15), a rear end flange (16), an A2 measuring surface (17), an A2 measuring surface detector (18) and an A2 measuring surface support S (19);

the base adjustment unit (3) comprises: a front end height adjusting bolt (20), a rear end height adjusting bolt (21), a front end horizontal adjusting bolt (22), a rear end horizontal adjusting bolt (23), a front end adjusting block (24), a rear end adjusting block (25), a front end distance adjusting sheet (26) and a rear end distance adjusting sheet (27);

the measurement and control unit (4) comprises: the device comprises a CCD detector S2(28), a CCD detector M (29), a signal conversion circuit (30), a touch screen (31), a driving circuit (32), an interface circuit (33), a microprocessor (34), a memory (35) and a ROM (36).

And (3) related parameters: the distance A (37) between the front end flange (12) and the rear end flange (16), the distance B (38) between the measuring surface (17) and the bottom angle of the generator (14) measured by A2, the distance C (39) between the left foot and the right foot of the generator (14), and the distance D (40) between the measuring surface (9) and the front end flange (12) measured by A1.

And a second part, detecting the adjustment process.

Step one, when the shafting is initially positioned, the axis displacement deviation of shafting equipment is adjusted by using a magnetic dial indicator so as to be set within the range of 0.15-0.35 mm.

The mounting hole of the generator (14) is aligned with the mounting hole of the base, and the assembly of the turbine expander (5) and the reduction gearbox (6) is initially aligned with the mounting hole of the base in position. And adjusting the distance A (37) between the front end flange (12) and the rear end flange (16), wherein the numerical value of the distance A (37) is greater than the length of the coupler (11) by about 0.5-1.5 mm.

The magnetic dial indicator is used for preliminarily adjusting the parallel misalignment amount and the angle misalignment amount, and the rear end height adjusting bolt (21), the rear end adjusting block (25), the rear end horizontal adjusting bolt (23) and the rear end distance adjusting sheet (27) are used for adjusting the misalignment amount of the generator (14). The misalignment of the turboexpander (5) is adjusted by using a front end adjusting block (24), a front end horizontal adjusting bolt (22), the front end horizontal adjusting bolt (22) and a front end distance adjusting sheet (26). And preliminarily adjusting the axial displacement deviation of the two shafting within the range of 0.15-0.35 mm. After preliminary adjustment, the rear-end shafting rotor (15) is higher than the front-end shafting rotor (7), and the central height difference is within the range of 0.15-0.25 mm.

After the initial adjustment is completed, the end of the generator (14) is determined as a static device, the positioning part of the rear end adjusting block (25) is welded with the base, and the generator (14) is tightly connected with the base assembly through a fastening screw and a spring washer.

And step two, when the measurement position is selected, an A1 measurement surface (9) is arranged at the front end shafting rotor (7), and an A2 measurement surface (17) is arranged at the rear end shafting rotor (15).

If the A1 measurement surface support M (10) and the A2 measurement surface support S (19) are connected to the front-end shafting rotor (7) and the rear-end shafting rotor (15) and cannot be installed due to space problems, the A1 measurement surface (9) and the A2 measurement surface (17) can be selected as the front-end flange (12) and the rear-end flange (16).

And thirdly, when the static shaft system is locked, arranging an A1 measuring surface detector (8) at an A1 measuring surface (9), arranging an A2 measuring surface detector (18) at an A2 measuring surface (17), and locking the static shaft system.

An A1 measuring surface bracket M (10) provided with an A1 measuring surface detector (8) and a CCD detector S (28) and connected to an A1 measuring surface (9) of a front-end shafting rotor (7); an A2 measuring surface bracket S (19) provided with an A2 measuring surface detector (18) and a CCD detector S (28) and connected to an A2 measuring surface (17) of a rear-end shafting rotor (15); the chains are hung on the anchor bolts of the A1 measuring surface bracket M (10) and the A2 measuring surface bracket S (19) from the inside respectively, and the measuring and controlling unit (4) is ensured to be tightly fixed on the corresponding measuring section. And opening two MUs (multi-user) of the A1 measuring surface detector (8) and the A2 measuring surface detector (18), adjusting the laser line of the A1 measuring surface detector (8) to aim at the central position of the A2 measuring surface detector (18), and converting and displaying the measuring result of the CCD detector S (28) on the touch screen (31) through the microprocessor (34).

And step four, when the measuring position is described, describing the measuring position by using a clock face angle method, namely, at the clock positions of 9 points, 12 points and 3 points on the clock surface.

The switch of the touch screen (31) is turned on, and the main screen is entered. Clicking the new pair, inputting the numerical values of the distance A (37), the distance B (38), the distance C (39) and the distance D (40) obtained by measuring with the tape measure, entering a measuring stage, viewing the mobile equipment at the back, and determining the 9 o ' clock direction of the first measuring position, the 12 o ' clock direction of the second measuring position and the 3 o ' clock direction of the third measuring position. Obtaining measured values from three different measuring positions, and adjusting the parallel misalignment of the turboexpander (5) by utilizing a front-end horizontal adjusting bolt (22) according to the measuring results; the front end height adjusting bolt (20) and the front end distance adjusting sheet (26) are used for adjusting the misalignment of the height and the angle. The concentric alignment quantity of the rear end shafting rotor (15) and the front end shafting rotor (7) is ensured to be within the range of 0.05-0.15 mm.

And step five, correcting the deviation value of the parallel misalignment and the misalignment of the angle during misalignment deviation adjustment, and correcting the deviation of the parallel misalignment and the misalignment angle by utilizing the components such as a front end height adjusting bolt (20), a rear end height adjusting bolt (21), a front end horizontal adjusting bolt (22), a rear end horizontal adjusting bolt (23), a front end adjusting block (24), a rear end adjusting block (25), a front end distance adjusting sheet (26), a rear end distance adjusting sheet (27) and the like to realize misalignment deviation adjustment.

If the requirement of the parameters can not be aligned, the previous step can be repeated for repeated adjustment until the alignment requirement is met. After the requirements are met, the positioning part of the front-end shafting rotor (7) is welded with the base, and the turbine expander (5) is tightly connected with the base component by fastening screws and spring washers.

After centering is finished, according to the couplings (11) with different specifications, different torque requirements are selected to adjust the fastening bolts (13), and the elastic diaphragms of the couplings (11) can be ensured to be freely stretched.