CN209432019U - The dedicated bridge gauge of rotary machine rotor installation and repairing - Google Patents

Abstract

The dedicated bridge gauge of rotary machine rotor installation and repairing, symmetrical pedestal both ends are provided with vertical stabilizer blade；Blade is provided among pedestal；Electronic digital display table is provided on the blade；There is main scale to pass through blade, main scale lower end is contact；The electronic digital display table shows the elongation of main scale, and can be using main scale any position as benchmark；The pedestal be it is trapezoidal, three groups of symmetrical threaded holes are arranged at bottom；Screw thread at the top of stabilizer blade is screwed on threaded hole.The dedicated bridge gauge of rotary machine rotor installation and repairing, the contact are ellipticity.The dedicated bridge gauge of rotary machine rotor installation and repairing, including multiple groups stabilizer blade, each group length are different.The dedicated bridge gauge of rotary machine rotor installation and repairing, the stabilizer blade and pedestal connection screw thread are triangle fine thread.

Description

The dedicated bridge gauge of rotary machine rotor installation and repairing

Technical field

The utility model patent is related to the widely applied horizonally split formula rotating machinery of petroleum chemical enterprise, it can be achieved that maintenance, peace The measurement of rotor journal and body lower cylinder radial clearance during dress can especially improve repair quality, overhaul efficiency, increase peace Quan Xing.

Background technique

At present enterprise's radial clearance measurement frequently with method mainly have: internal-and external diameter mensuration, rubberized fabric method, clearance gauge method, Pressing lead wires method and bush gap mensuration etc..Internal-and external diameter mensuration be by measurement rotor seal outer diameter and seal stator internal diameter come Be roughly calculated gap width, since measurement error is larger, it is only for reference or cooperate other detection methods use；Rubberized fabric method is to comb The inner periphery of tooth sealing sticks on a piece of adhesive tape, and determines gap width by detecting the contact shade of different-thickness adhesive plaster, works as cylinder body When for cylindrical structure or bearing block being cartridge type, due to must be previously placed on comb teeth when rotor installation, adhesive plaster impression may cause, Thus this structure is not suitable for rubberized fabric method；Clearance gauge method is a kind of widely used rotor radial of enterprise and axial gap measurement side Method, though clearance gauge method has the characteristics that simple and rapid, clearance gauge itself is in uneven thickness, and transverse curvature amount when measurement is also brought along Very big influence, accuracy are lower.During actual measurement, the measurement result of different personnel can generate inconsistent situation, practical Error is very big, so it is not recommended that using；Pressing lead wires method is that three groups of both the above different-diameters are pasted on sealing ring inner periphery Galvanized wire, it is similar with rubberized fabric method.This method is troublesome in poeration, during rotor is mounted on partition, it is difficult to ensure that turning Double swerve and front and back play by a small margin do not occur for son, and when measurement inevitably will appear false gap, therefore precision is not high, seldom by Using；Bush gap mensuration mainly surveys gap and clamp force.The gap of bearing shell two sides, usually with clearance gauge in the quadrangle of bearing shell Measurement, the method measurement of top clearance pressing lead wires is poor according to galvanized wire average thickness, can determine whether out bearing shell top clearance size. But this method is the combination of clearance gauge method and pressing lead wires method, and actual measurement accuracy is lower, thus is not suitable for measurement main shaft and machine Body lower cylinder radial clearance.

Since large rotating machinery needs its installation quality of strict guarantee, especially repairing rotor to return dress in installation and repairing When have to that the radial clearance of rotor main shaft is accurately measured and adjusted, with ensure unit safety, stabilization, long period fortune Row improves Business Economic Benefit.

Summary of the invention

Goal of the invention: the purpose of the utility model is, improves the measurement error of traditional measurement method, simplifies measurement and operated Journey；Meet and radial clearance measurement demand is carried out to horizonally split formula rotating machinery difference diameter of axle rotor main shaft, provides a kind of dedicated Equipment.

Technical solution:

The dedicated bridge gauge of rotary machine rotor installation and repairing, symmetrical pedestal both ends are provided with vertical stabilizer blade；Pedestal Centre is provided with blade；Electronic digital display table is provided on the blade；There is main scale to pass through blade, main scale lower end is contact；

The electronic digital display table shows the elongation of main scale, and can be using main scale any position as benchmark；

The pedestal be it is trapezoidal, three groups of symmetrical threaded holes are arranged at bottom；Screw thread at the top of stabilizer blade is screwed on threaded hole.

The dedicated bridge gauge of rotary machine rotor installation and repairing, preferably: the contact is ellipticity.

The dedicated bridge gauge of rotary machine rotor installation and repairing, preferably: including multiple groups stabilizer blade, each group length is different.

The dedicated bridge gauge of rotary machine rotor installation and repairing, preferably: the stabilizer blade is triangle with pedestal connection screw thread Shape fine thread.

Advantage and effect:

The dedicated bridge gauge of Novel horizontal dissection type rotary machine rotor main shaft radial direction clearance measurement meets amount of deflection, stability, material The strength and stiffness requirement of material；Dedicated bridge gauge can be measured for the rotor of the different diameters of axle simultaneously, improve use scope, be realized Radial clearance it is simple and quick, accurately measure, meet required precision (up to 0.01mm)；Maintenance installation effectiveness is increased substantially, Eliminate security risk present in maintenance installation, it is ensured that unit realizes safe and stable, long-term operation target.

Detailed description of the invention:

Fig. 1 is the dedicated bridge gauge perspective view of the utility model patent；

Fig. 2-4 is the three-view diagram that radial clearance measures dedicated bridge gauge base part；

Fig. 5-7 is the three-view diagram that radial clearance measures dedicated three kinds of specification foot portions of bridge gauge；

Fig. 8-10 is the main scale part three-view diagram that radial clearance measures dedicated bridge gauge.

It is marked in figure: 1 blade；2 stabilizer blades；3 main scales；4 electronic digital display tables；5 pedestals；6 screws；7 boss；8 contacts；9 screw threads Hole.

Specific embodiment:

Radial clearance measurement error is larger during the utility model overhauls back dress for horizonally split formula Industrial Steam Turbine Rotors Aided, Measurement method is not rigorous, and the jejune problem of measuring tool, researching and designing can quick and precisely measure the dedicated bridge gauge of radial clearance, The quick and precisely measurement of rotor main shaft and body lower cylinder radial clearance during dress is overhauled back with realization, guarantees that rotor main shaft is high Quality returns dress, improves working efficiency.

Solving the problems, such as the technical idea of the use is:

Bridge gauge material selection high-carbon steel, hardness are high, and thermal deformation is small, corrosion-resistant, wear-resisting property is good so that bridge gauge more resistant to With, meet after processing high-acruracy survey requirement；Pedestal selects trapezium structure, is designed to size, self gravity is avoided to make base Seat generates large curved stress, so that biggish deflection value is generated, to meet intensity, rigidity, amount of deflection and stability requirement；It lengthens Pedestal afterwards processes the threaded hole of three groups of different distances, can be used for adjusting the horizontal distance of two stabilizer blades, and stabilizer blade processes three groups of differences Specification can be used for adjusting vertical height after coupling with threaded hole, for measuring the radial clearance of the different diameters of axle, expand measurement model It encloses；The triangle fine thread that screw thread selects helix angle lesser, two stabilizer blade bottom surfaces are in same after meeting cooperation and tightening The high-precision requirement of horizontal plane；Electronic digital display table can be returned to zero and be fixed to arbitrarily selected benchmark, and measurement show value is positive Show to be higher than a reference value when value, conversely, negative value shows that, if suitable operation, data can be accurate to 0.01mm, than general lower than a reference value Logical measurement method is more accurate, intuitive, conveniently；Main scale contact is designed to widen bottom surface, to facilitate and axle journal circumferential direction highest point phase It cuts；Uniformly closely knit to meet contact of the measurement accuracy with two junction, contact and stabilizer blade boss bottom surface are high-precision abradant surface.

Specific structure of the invention are as follows:

Bridge gauge is connected through a screw thread structure by top half blade 1 and lower half portion stabilizer blade 2 along central symmetry as shown in Figure 1: At；

Wherein, the top half blade 1 is made of measurement main scale 3, electronic digital display table 4 and pedestal 5；

The lower top half stabilizer blade 2 has three groups of different height specifications, and the upper end processes screw 6, and lower end processes boss 7.

Measurement 3 bottom of main scale is the high-precision grinding contact 8 widened, when being convenient for measuring more rapidly accurately with it is tested Diameter of axle section highest point is tangent.

The electronic digital display table 4 shows data by measuring the elongation of main scale 3, and can customize any position is base Standard, and the positive negative difference with benchmark is directly displayed, numerical value is accurate to 0.01mm.

The pedestal 5 is trapezoidal, three groups of symmetrical threaded holes 9 of bottom processing, the threaded hole 9 and the cooperation of screw 6, is used for Fixed lower half portion stabilizer blade 2.

7 bottom surface of boss be high-precision abradant surface so that bridge gauge contacted with body lower cylinder two junction it is uniform close It is real, reach stability when measurement.

The utility model patent measurement process:

1, the stabilizer blade 2 of dimension and the spacing of threaded hole 9 are selected according to measured rotor diameter of axle size before measurement, by spiral shell Nail 6 connect with threaded hole 9 and tightens fixation, completes the assembling of bridge gauge；

2,7 bottom surface of boss of dedicated bridge gauge stabilizer blade 2 is guaranteed into horizontal junction across axle journal and symmetrically placed in bearing seating face It is uniformly closely knit to close face contact, and permanent marks are carried out to the position, the correct placement before completing bridge gauge measurement；

3, main scale 3 is slided up and down, makes to widen contact 8 and just touches axle journal and when with its plane tangent, by tightening electronics 4 side nut of digital display meter fixes main scale 3, while after pressing zero-setting button, taking away bridge gauge, unscrewing main scale 3, completes bridge gauge and measures number According to benchmark zeroing；

4, Awaiting Overhaul personnel complete after overhauling and returning cartridge rotor, place bridge gauge by former mark position, carry out second and measure, Electronic digital display table 4 can directly display the positive negative difference with benchmark, and service personnel, which adjusts rotor radial gap, is shown as value When zero, illustrate that this state is consistent with a reference value, that is, reach the optimum Working of rotor, completes measurement.

The invention has the advantages that the Novel horizontal dissection type rotary machine rotor main shaft radial direction clearance measurement designed Bridge gauge meets amount of deflection, intensity, rigidity and stability requirement；Bridge gauge can be measured for the rotor of the different diameters of axle simultaneously, be improved Use scope, realize radial clearance it is simple and quick, accurately measure, meet required precision (up to 0.01mm)；It increases substantially Installation effectiveness is overhauled, eliminates security risk present in maintenance installation, it is ensured that unit is realized safe and stable, long-term operation Target.

Claims (4)

1. the dedicated bridge gauge of rotary machine rotor installation and repairing, it is characterised in that: symmetrical pedestal (5) both ends are provided with vertically Stabilizer blade (2)；Blade (1) is provided among pedestal (5)；Electronic digital display table (4) are provided on the blade (1)；There are main scale (3) Across blade (1), main scale (3) lower end is contact (8)；

The electronic digital display table (4) shows the elongation of main scale (3), and can be using main scale (3) any position as benchmark；

The pedestal (5) be it is trapezoidal, three groups of symmetrical threaded holes are arranged at bottom；Screw thread and threaded hole at the top of stabilizer blade (2) revolve It connects.

2. the dedicated bridge gauge of rotary machine rotor installation and repairing according to claim 1, it is characterised in that: the contact (8) is Ellipticity.

3. the dedicated bridge gauge of rotary machine rotor installation and repairing according to claim 1, it is characterised in that: including multiple groups stabilizer blade (2), each group length is different.

4. the dedicated bridge gauge of rotary machine rotor installation and repairing according to claim 1, it is characterised in that: the stabilizer blade (2) with Pedestal (5) connection screw thread is triangle fine thread.