CN217618844U - Thrust disc dismounting device of combined assembly type compressor - Google Patents

Abstract

The utility model discloses the technique belongs to large-scale compressor rotating equipment and overhauls technical field, especially relates to a practical novel application of combination assembled compressor thrust dish dismounting device. A thrust disk dismounting device of a combination assembled compressor, comprising: the fixed sleeve, the fixed lantern ring, the ring flange, chuck, positioning disk, shelves dish, connecting bolt, nut. The utility model discloses to narrow and small inconvenient, the interference fit firm not easy disassembly of site space position, need not be heated the area not enough inconvenient heating, screw jack and hydraulic pressure and draw the unable direct application of force of horse, and utility model designs a combination assembled compressor thrust dish dismounting device specialized tool. The tool has the characteristics of unique and novel overhauling and disassembling method, advanced combined assembly design concept, simple and effective combined assembly part structure, low manufacturing cost, health, uniform and effective thrust disc stress, simple and feasible use method, capability of conveniently and quickly finishing overhauling and disassembling of the thrust disc of the compressor, wider application range in the same type of compressor units and the like.

Description

Thrust disc dismounting device of combined assembly type compressor

Technical Field

The utility model discloses the type technique belongs to large-scale compressor rotating equipment and overhauls technical field, especially relates to a practical novel application of combination assembled compressor thrust dish dismounting device.

Background

In the prior art, the thrust disc is an important part used in various large-scale rotating unit equipment such as a screw compressor, a centrifugal compressor, a steam turbine and the like, is well applied in the imported brand compression and steam turbine units of China and countries all over the world, is assembled and connected with a rotor shaft to do integral rotation motion, realizes that the axial thrust to the rotor shaft is generated due to the change of the inlet and outlet pressure of the unit during the starting, stopping and running of the unit, and realizes the function of balancing and protecting the excessive axial displacement of the rotor shaft in the unit shell by taking the thrust disc and a thrust bearing as a matched unit friction pair structural design, thereby ensuring the safe and stable running of the large-scale unit.

When the unit fails to operate normally due to misoperation, untimely maintenance and other reasons in the operation and use process, the unit needs to be disassembled and maintained in time in order to avoid influencing the normal production order and economic benefit of enterprises. The high-efficiency high-quality maintenance technology is an important factor for completing unit maintenance as soon as possible, important links such as original data acquisition, important component disassembly, damaged component maintenance or replacement, accurate and error-free assembly, critical data gap measurement and the like are involved in the maintenance process, the maintenance is rapidly completed, the components are prevented from being damaged secondarily in the disassembly process, and the maintenance and assembly data gap is guaranteed to meet the standard requirement.

Therefore, the professional instrument that uses in the maintenance dismantlement is very important, and is both high-efficient quick safe feasible, but, the thrust disc design is mostly inside footstep bearing shell, and the thrust disc required precision is high, does not allow to carry out local application stress point at will to the work contact fitting surface, still has the narrow and small inconvenient, interference fit firm not easy removable, need not heated area not inconvenient heating, screw jack and hydraulic pressure to draw the horse and can't directly use objective problems such as application of force according to actual conditions in spatial position.

Therefore, need processing preparation specialized detaching tool to carry out normative maintenance to unit thrust plate to improve unit overhaul of equipments efficiency, ensure unit overhaul of equipments quality, guarantee production order drops into normally as early as possible, creates economic benefits for the enterprise.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a combination assembled compressor thrust dish dismounting device overhauls the difficulty that exists in dismantling to the thrust dish and has carried out research breakthrough.

For realizing the utility model discloses the purpose of type technique, the utility model discloses the type adopts following technical scheme: a thrust disk dismounting device of a combination assembled compressor, comprising: the fixed sleeve, the fixed lantern ring, the ring flange, chuck, positioning disk, shelves dish, connecting bolt, nut. The fixed sleeve is of a horizontally split two-half combined structure, is stacked and assembled at the outer side position of the thrust plate, moves towards the annular central position during assembly, is of a closed integral structure in a closed manner and is used for fixing the boss part (stressed position) of the outer side end face of the thrust plate, is simple and effective in structure, solves the technical problem of insufficient stress points of the thrust plate, simultaneously realizes uniform stress of the thrust plate, and is stable, reliable and convenient to disassemble; the fixing lantern ring is arranged on the outer ring of the fixing sleeve in a penetrating way and used for positioning the fixing sleeve and preventing the two half combined type fixing sleeve from displacement and scattering, so that the whole structure of the fixing sleeve is not deformed; the flange plate penetrates through a boss on the end face of the edge of the fixed sleeve, is stacked and assembled in the middle of the axial direction of the fixed sleeve, and provides a transitional connection effect for a special tool for disassembling the thrust plate of the combined assembly type compressor by adopting the special and ingenious advanced creative structural concept; the chuck is a horizontally split two-half combined structure, is stacked and assembled on the flange, moves towards the circumferential central position during assembly, is combined into an integral structure in an encircling manner, is embedded into the axial gap position between the fixed sleeve and the flange to form a disc type fixed chuck for clamping the axial displacement motion of connecting the fixed sleeve and the flange, and the accurate size design of the structure effectively solves the technical difficulty of axial connection of the combined device and has extremely high stress strength; the positioning disk is of a horizontal splitting two-half combined structure, is stacked and arranged on the flange plate, is embedded into the annular clearance position between the flange plate and the chuck, is used for positioning the annular target position of the chuck, prevents the two-half combined chuck from displacement and scattering, and is assembled and arranged in the direction of 90 degrees staggered with the horizontal splitting joint of the chuck, so that the annular accurate positioning and the axial stress of the chuck are effectively solved, and the effect of fixing the whole body is achieved.

Furthermore, the baffle disc and the flange disc are connected in a penetrating assembly mode through 4 double-headed connecting bolts; the flange plate and the connecting bolt are fixed at the position close to the outer side of the thrust plate through a plurality of nuts; the baffle disc and the connecting bolt are fixed at a far position outside the thrust disc through a plurality of nuts; the connecting bolt both ends all processed there is the external screw thread, and external screw thread length is 100mm.

Furthermore, a screw jack is arranged between the baffle disc and the end face of the compressor rotor shaft and used for applying pressure along the central line direction of the rotor shaft and ejecting the thrust disc which is heated and expanded out of the rotor shaft.

A specific use method of the device comprises the following operation methods:

(1) the fixed sleeve is stacked, arranged and assembled at the outer side of the thrust disc, and moves towards the annular center to form a closed integral structure in an encircling manner.

(2) And the fixed lantern ring is assembled on the outer ring of the fixed sleeve in a penetrating way.

(3) And the flange plate penetrates through the boss on the end face of the edge of the fixed sleeve, and is stacked, placed and assembled at the axial middle position of the fixed sleeve.

(4) The chucks are stacked, placed and assembled on the flange plate, and move towards the center of the ring, so that the chuck is combined into an integral structure.

(5) The positioning disc is stacked, placed and assembled on the flange disc, embedded into the annular gap between the flange disc and the chuck and assembled in the direction of 90 degrees staggered from the horizontal subdivision joint line of the chuck.

(6) The gear disc and the flange disc are connected in a penetrating and assembling mode through 4 double-head connecting bolts, and meanwhile, according to the height size of the screw jack, the gear disc, the flange disc and the double-head connecting bolts are preassembled and all connected with fixing nuts.

(7) And placing and assembling the screw jack between the baffle disc and the end face of the compressor rotor shaft, and pre-tightening and fixing.

(8) Checking and confirming whether all parts of the professional tool for placing and assembling are assembled in place or not, whether the thrust disc is stressed uniformly or not, whether the connecting bolt is firm or not, whether the stroke of the screw jack is sufficient or not, whether oxygen, acetylene gas and a gas welding gun are ready to be put in place or not, and pre-tightening the screw jack to apply pressure after all the parts are checked.

(9) Oxygen and acetylene gas combustion gas welding guns are used for rapidly heating the thrust plate by big fire, so that the temperature of the thrust plate is ensured to be uniformly raised integrally, the integral temperature of the thrust plate is controlled to be between 100 and 120 ℃, and the thermal expansion temperature difference of the metal material is formed by comparison with a rotor shaft.

Pressure is applied to the screw jack in the direction of the rotor shaft centerline until the thrust disk, which has been thermally expanded, is ejected from the rotor shaft.

The utility model discloses a technical scheme in, the theory of operation according to metal material thermal energy temperature difference method and mechanical tension method to with the effective combination application of metal material thermal energy temperature difference method and mechanical tension method, to the narrow and small inconvenient, the interference assembly of site space position firmly not easy removable, need not heated the area not enough inconvenient heating, screw jack and hydraulic pressure draw the unable direct application of force of horse, and the utility model discloses a combination assembled compressor thrust disc dismounting device specialized tool. The tool has the characteristics of unique and novel overhauling and disassembling method, advanced combined assembly design concept, simple and effective combined assembly part structure, low manufacturing cost, health, uniform and effective stress of the thrust plate, simple and feasible use method, capability of conveniently and rapidly finishing overhauling and disassembling of the thrust plate of the compressor, wider application range in the same type of compressor units and the like.

Drawings

Fig. 1 is a schematic view of a stop push plate assembly structure in the prior art.

Fig. 2 is a schematic structural diagram of a combined assembly type compressor in the prior art.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The utility model relates to a combination assembled compressor thrust dish dismounting device to the oil-free twin-screw compressor disintegration of American import equipment GE overhauls as the basis, overhauls the difficulty that exists in the dismantlement and has carried out research breakthrough to the thrust dish. The following description is made in detail with reference to fig. 1 and 2:

the thrust disc and the rotor shaft are of a 0.05mm interference fit assembly structure, the thrust disc is designed inside the thrust bearing shell, the size of an edge boss of the end face of the outer side of the thrust bearing is only 7mm, and the end face of the outer side of the thrust bearing is only provided with 2M 8 threaded holes. In the disassembly process of disassembling and overhauling the thrust plate, (1) if a hydraulic puller is used for directly bearing force on a boss at the edge of the end face, the boss is only 7mm in size, so that the thrust plate is not firmly stressed and stress points are too concentrated and uneven, and the thrust plate is easy to slip and damage; (2) if 2M 8 screw holes on the end face are used for manufacturing the pull rod to disassemble the stress points, the stress points are fewer, the strength of the M8 bolt is lower, the interference force still existing after the thrust plate is heated cannot be overcome, and meanwhile, the thrust plate is an important core component of the compressor, so that the stress point quantity cannot be increased on the end face through a field machining mode at will, and the strength of the stress points cannot be amplified. Trial tests are carried out in field maintenance by the method, and all the tests are ended by failure, and the thrust disc of the unit is extremely difficult to maintain and disassemble under an objective original design structure.

For effectively solving the above problems, the utility model adopts the following technical scheme: as shown in fig. 1, a thrust plate dismounting device of a combined assembly type compressor comprises: the fixing sleeve comprises a fixing sleeve (4), a fixing sleeve ring (5), a flange plate (6), a chuck (7), a positioning disc (8), a baffle disc (9), a connecting bolt (10) and a nut (11). The fixing sleeve (4) is of a horizontally split two-half combined structure, is stacked and assembled at the outer side position of the thrust plate (2), moves towards the annular central position during assembly, is of a closed integral structure in an encircling manner and is used for fixing the boss part (stress position) of the outer side end face of the thrust plate (2), the fixing sleeve (4) is simple and effective in structure, the technical problem that the stress point of the thrust plate (2) is insufficient is solved, meanwhile, the thrust plate (2) is uniformly stressed, and is stable, reliable and convenient to disassemble; the fixing lantern ring (5) is arranged on the outer ring of the fixing sleeve (4) in a penetrating way and used for positioning the fixing sleeve (4) and preventing the two half combined fixing sleeve (4) from displacement and dispersion, so that the whole structure of the fixing sleeve (4) is not deformed; the flange plate (6) penetrates through a boss on the edge end face of the fixed sleeve (4) and is stacked and assembled in the axial middle position of the fixed sleeve (4), and the special and ingenious advanced creative structural concept provides a transitional connection effect for a special tool for disassembling the thrust plate of the combined assembly type compressor; the chuck (7) is a horizontally split two-half combined structure, is stacked and assembled on the flange plate (6), moves towards the circumferential central position during assembly, is combined to form an integral structure, is embedded into the axial gap position between the fixed sleeve (4) and the flange plate (6) to form a disc type fixed chuck (7) and is used for clamping the axial displacement motion for connecting the fixed sleeve (4) and the flange plate (6), and the technical difficulty of axial connection of the combined device is effectively solved by the accurate size design of the structure, and the stress intensity is extremely high; positioning disk (8) for horizontal subdivision two halves integrated configuration, pile up and place and assemble in ring flange (6), the hoop clearance position between embedding ring flange (6) and chuck (7) for location chuck (7) hoop target location prevents that two halves integrated configuration chuck (7) from taking place the displacement and scattering, should stagger 90 degrees directions with chuck (7) horizontal subdivision joint line and assemble and place, the accurate location of hoop and the axial atress of so effectively having solved chuck (7) are even, have played fixed holistic effect.

Specifically, the baffle disc (9) and the flange disc (6) are connected in a penetrating assembly mode through 4 double-headed connecting bolts (10); the flange plate (6) and the connecting bolt (10) are fixed at the position close to the outer side of the thrust plate (2) through a plurality of nuts (11); the baffle disc (9) and the connecting bolt (10) are fixed at a far position outside the thrust disc through a plurality of nuts (11); and external threads are processed at the two ends of the connecting bolt (10), and the length of each external thread is 100mm.

Specifically, an assembly screw jack (12) is arranged between the baffle disc (9) and the end face of the compressor rotor shaft (1) and used for applying pressure along the central line direction of the rotor shaft (1) and ejecting the thrust disc (2) which is heated and expanded out of the rotor shaft (1).

When in use, the operation method is as follows:

(1) the fixed sleeve (4) is stacked, arranged and assembled at the outer side of the thrust disc (2), and moves towards the annular central position to form a closed integral structure in an encircling manner.

(2) And the fixed lantern ring (5) is penetrated and assembled on the outer ring of the fixed sleeve (4).

(3) And the flange (6) penetrates through the boss on the edge end face of the fixed sleeve (4), and is stacked, placed and assembled at the axial middle position of the fixed sleeve (4).

(4) The chuck (7) is stacked, placed and assembled on the flange plate (6), and meanwhile moves towards the annular center position to form an integral structure in a surrounding mode.

(5) The positioning disc (8) is stacked, placed and assembled on the flange plate (6), embedded into the annular gap between the flange plate (6) and the chuck (7), and assembled with the horizontal subdivision joint seam of the chuck (7) in a direction staggered by 90 degrees.

(6) The baffle disc (9) and the flange disc (6) are connected in a penetrating and assembling mode through 4 double-head connecting bolts (10), and meanwhile, all of the baffle disc (9), the flange disc (6) and the double-head connecting bolts (10) are connected with fixing nuts (11) in a pre-assembling mode according to the height size of a screw jack (12).

(7) And placing and assembling the screw jack (12) between the baffle disc (9) and the end face of the compressor rotor shaft (1), and pre-tightening and fixing.

(8) Checking and confirming whether all parts of the professional tool for placing and assembling are assembled in place or not, whether the stress of the thrust disc (2) is uniform or not, whether the connecting bolt (10) is firm or not, whether the stroke of the screw jack (12) is sufficient or not, whether oxygen, acetylene gas and a gas welding gun are ready to be placed in place or not, and pre-tightening the screw jack (12) to apply pressure after all the parts are checked and completed.

(9) Oxygen and acetylene gas combustion gas welding guns are used for rapidly heating the thrust plate (2) by big fire, so that the temperature of the thrust plate (2) is integrally and uniformly increased, the integral temperature of the thrust plate (2) is controlled to be between 100 and 120 ℃, and the thermal expansion temperature difference of a metal material is formed by comparing the integral temperature with the rotor shaft (1).

Pressure is applied to the screw jack (12) along the central line direction of the rotor shaft (1) until the thrust disc (2) which is expanded by heating is ejected from the rotor shaft (1).

To sum up, the utility model discloses an among the technical scheme, the theory of operation according to metal material thermal energy temperature difference method and mechanical tension method to with the effective combined application of metal material thermal energy temperature difference method and mechanical tension method, to the narrow and small inconvenient, the interference fit of site space position is firmly not easy, need not heated the inconvenient heating of area not enough, screw jack and hydraulic pressure draw the unable direct application of force of horse, and the utility model designs a combination assembly compressor thrust disc dismounting device specialized tool. The tool has the characteristics of unique and novel overhauling and disassembling method, advanced combined assembly design concept, simple and effective combined assembly part structure, low manufacturing cost, health, uniform and effective stress of the thrust plate, simple and feasible use method, capability of conveniently and rapidly finishing overhauling and disassembling of the thrust plate of the compressor, wider application range in the same type of compressor units and the like.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a thrust disc dismounting device of combination assembled compressor which characterized in that: the method comprises the following steps: the device comprises a fixed sleeve, a fixed lantern ring, a flange plate, a chuck, a positioning plate, a baffle plate, a connecting bolt and a nut; fixed cover for horizontal subdivision two halves integrated configuration, present to pile up and place the assembly in thrust dish outside position, move to hoop central point during the assembly, embrace to form and seal overall structure for fixed thrust dish outside terminal surface boss part, fixed lantern ring run through and place the assembly in fixed cover outer lane, the ring flange run through fixed cover edge terminal surface boss, present to pile up and place the assembly in fixed cover axial middle part position, the chuck be horizontal subdivision two halves integrated configuration, pile up and place the assembly in the ring flange, move to hoop central point during the assembly, embrace to constitute overall structure, imbed the axial clearance position between fixed cover and the ring flange, form the fixed chuck of disc type, the positioning disk be horizontal subdivision two halves integrated configuration, pile up and place the assembly in the ring flange, imbed the annular clearance position between ring flange and the chuck.

2. The thrust disk dismounting device of the combined assembly type compressor as claimed in claim 1, wherein: the baffle disc and the flange disc are connected in a penetrating and assembling way through 4 double-head connecting bolts; the flange plate and the connecting bolt are fixed at the position close to the outer side of the thrust plate through a plurality of nuts; the baffle disc and the connecting bolt are fixed at a position far away from the outer side of the thrust disc through a plurality of nuts.

3. The thrust disk dismounting device of the combined assembly type compressor as claimed in claim 2, wherein: the connecting bolt both ends all processed there is the external screw thread, and external screw thread length is 100mm.

4. The thrust disk dismounting device of the combined assembly type compressor as claimed in claim 2, wherein: and a screw jack is arranged between the baffle disc and the end face of the compressor rotor shaft and used for applying pressure along the central line direction of the rotor shaft and ejecting the thrust disc which is heated and expanded out of the rotor shaft.

Images