Cylindrical compressor in-situ rotating device

Abstract

The utility model provides an in-situ rotating device for a cylindrical compressor. The in-situ rotating device comprises a special shell for the cylindrical compressor, a base arranged at the bottom of the special shell, and a rotating platform capable of moving between the special shell and the base, wherein the bottom of the special shell is of a plane structure; supporting seats are arranged at the bottoms of the front end and the rear end of the special machine shell respectively, the tops of the left sides and the right sides of the two supporting seats are connected with a base through jacking oil cylinders respectively, and the special machine shell can ascend and descend relative to the base through the telescopic action of the jacking oil cylinders. The rotating platform comprises a platform supporting base, a rotating table top arranged on the upper portion of the platform supporting base and a rotating mechanism which is arranged between the platform supporting base and the rotating table top and enables the rotating table top to rotate by 360 degrees in the two directions on the platform supporting base. According to the in-situ rotating device for the cylindrical compressor, it can be guaranteed that when the cylindrical compressor is overhauled, the universality is high, and the cylindrical compressor is not limited by the arrangement form and the installation position of a unit.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor maintenance, and particularly relates to a device for rotating a barrel-shaped compressor in place. Background Art

[0002] Existing barrel-shaped compressors do not have the function of horizontal rotation in place. When the compressor is restricted by the space of the two-side units, it is often impossible to perform core-pulling maintenance on the barrel-shaped compressor. Usually, the whole compressor needs to be lifted off the base for maintenance. There are generally two ways to lift the whole compressor off the base:

[0003] One is to use the overhead crane in the compressor workshop to lift the whole compressor during maintenance and place it in the designated maintenance area, and then use the overhead crane to lift the whole compressor back to the base after all maintenance operations are completed. If this method is adopted, first, a large-tonnage overhead crane needs to be selected in the compressor workshop. Second, the internal steel structure and foundation bearing capacity of the workshop need to be increased, which will lead to a significant increase in the construction cost of the compressor workshop. In addition, since a large-tonnage overhead crane is only needed during the maintenance period, the usage frequency of the overhead crane is low, which directly results in a very low cost performance of the increased part in the construction cost of the compressor workshop.

[0004] The second is to use a large-tonnage truck crane outside the workshop to perform the hoisting operation on the compressor. If this method is adopted, the ceiling of the compressor workshop needs to be removed. The removal and reinstallation of the ceiling of the compressor workshop will take valuable maintenance time and also result in additional cost expenditures. Second, during the hoisting operation, strict requirements are imposed on the hoisting space and environment, and the hoisting accuracy is low. In addition, the hourly rate of the large-tonnage truck crane is relatively expensive, and the two hoistings of the compressor during the maintenance period will incur high costs. At the same time, it will also occupy a large amount of the compressor maintenance period.

[0005] Therefore, there is an urgent need for a maintenance method for barrel-shaped compressors that is highly versatile and not restricted by the unit layout form and installation position. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a device for rotating a barrel-shaped compressor in place, which can ensure strong versatility during the maintenance of the barrel-shaped compressor and is not restricted by the unit layout form and installation position.

[0007] To solve the above technical problem, the utility model provides a device for rotating a barrel-shaped compressor in place, including

[0008] a special machine shell for the barrel-shaped compressor with a flat bottom structure,

[0009] a base arranged at the bottom of the special machine shell, and

[0010] a rotating platform that can be moved between the special machine shell and the base;

[0011] Support seats are respectively arranged at the bottom of the front and rear ends of the special casing. The top parts on the left and right sides of the two support seats are respectively connected to the base through jacking cylinders. The special casing can be raised and lowered relative to the base through the telescopic action of the jacking cylinders.

[0012] The rotating platform includes a platform support seat, a rotating tabletop arranged on the upper part of the platform support seat, and a rotating mechanism arranged between the platform support seat and the rotating tabletop, which can make the rotating tabletop rotate 360° bidirectionally on the platform support seat.

[0013] Furthermore, two guiding key grooves are symmetrically arranged on the left and right sides of the bottom of the special casing. Guiding keys matching the guiding key grooves are arranged on the rotating tabletop. When the rotating platform moves to the bottom of the special casing, the rotating platform can be positioned through the guiding key grooves and the guiding keys.

[0014] Furthermore, the rotating mechanism includes a motor reducer arranged inside the platform support seat and a slewing bearing arranged on the platform support seat;

[0015] The slewing bearing includes an outer circle and an inner circle. The outer circle is fixedly connected to the platform support seat, and the inner circle is fixedly connected to the rotating tabletop;

[0016] The motor reducer includes a motor and a small gear arranged on the motor and can rotate under the drive of the motor. The small gear meshes with the internal teeth of the inner circle.

[0017] Furthermore, spring wheels are respectively arranged at the four corner positions of the bottom of the platform support seat.

[0018] Furthermore, the fixed end of the jacking cylinder is fixedly connected to the top of the support seat, and the extending end of the jacking cylinder is connected to the base.

[0019] Furthermore, a support plate is arranged at the bottom of the support seat. A fixing plate matching the position and size of the support plate is arranged on the base. Connecting bolts are arranged on the fixing plate. Connecting holes matching the connecting bolts on the fixing plate are arranged on the support plate. The support plate and the fixing plate are fixedly connected by the connecting bolts through the connecting holes.

[0020] Furthermore, the base is formed by welding I-beams, and a cross beam is arranged in the middle. The cross beam can be arranged in a suspended manner.

[0021] Furthermore, grooves for accommodating the air inlet pipe and the air outlet pipe protruding from the bottom of the special casing are arranged on the base.

[0022] Furthermore, a tooling base with a height matching that of the base is arranged on one side of the base. The rotating platform is placed on the tooling base.

[0023] A kind of in-situ rotation device for a barrel-shaped compressor provided by the present utility model includes a base, a special casing capable of lifting relative to the base, and a rotating platform that can be moved between the base and the special casing and enables the special casing to rotate 360° bidirectionally relative to the base. If the barrel-shaped compressor cannot be subjected to core-pulling maintenance due to space limitations at both ends of the unit, and there is sufficient space on both sides or other parts of the barrel-shaped compressor to meet the requirements for core-pulling maintenance of the barrel-shaped compressor, the special casing can be lifted, the rotating platform can be moved between the base and the special casing, and then the height of the special casing can be lowered so that the special casing presses on the rotating platform. Then, the barrel-shaped compressor can be rotated in-situ to a certain angle through the rotating platform, that is, the barrel-shaped compressor can be rotated to a position where there is maintenance space at both ends, so that subsequent core-pulling maintenance operations can be carried out on the barrel-shaped compressor. In this way, through the in-situ rotation device for the barrel-shaped compressor provided by the present utility model, it is not necessary to use a large-tonnage overhead crane to lift the unit off the base for core-pulling maintenance operations, nor is it necessary to increase additional civil engineering costs. It is not restricted by the unit layout form and installation position. It can smoothly complete the core-pulling maintenance operation of the barrel-shaped compressor, not only can improve the efficiency of the core-pulling maintenance operation of the barrel-shaped compressor, but also can greatly reduce the cost of the core-pulling maintenance operation of the barrel-shaped compressor. It has strong versatility, has a broad application prospect, and is worthy of popularization and application. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural view of an in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0025] Figure 2 It is a left view of the special casing in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0026] Figure 3 It is a front view of the special casing in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0027] Figure 4 It is a top view of the special casing in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0028] Figure 5 It is a main view of the special casing in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0029] Figure 6 It is a main view of the rotating platform in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0030] Figure 7 It is a front view of the rotating platform in the in-situ rotation device for a barrel-shaped compressor provided by an embodiment of the present utility model;

[0031] Figure 8Partial cross-sectional view of the rotating platform in the in-situ rotating device of the cylindrical compressor provided by the embodiment of the present utility model;

[0032] Figure 9 Schematic structural diagram of the slewing bearing in the in-situ rotating device of the cylindrical compressor provided by the embodiment of the present utility model;

[0033] Figure 10 Schematic structural diagram of the motor reducer in the in-situ rotating device of the cylindrical compressor provided by the embodiment of the present utility model;

[0034] Figure 11 Front view of the base in the in-situ rotating device of the cylindrical compressor provided by the embodiment of the present utility model

[0035] Figure 12 Top view of the base in the in-situ rotating device of the cylindrical compressor provided by the embodiment of the present utility model.

[0036] Reference numerals: 1 - special machine shell, 2 - base, 3 - rotating platform, 4 - tooling base, 5 - air inlet cylinder. 6 - air outlet cylinder, 11 - support seat, 12 - lifting oil cylinder, 13 - guide keyway, 14 - support plate, 21 - fixing plate, 22 - groove, 31 - platform support seat, 32 - rotating table surface, 33 - guide key, 34 - motor reducer, 35 - slewing bearing, 36 - spring wheel, 341 - motor, 342 - pinion, 351 - outer circle, 352 - inner circle. Detailed implementation manners

[0037] See Figure 1 , an in-situ rotating device of a cylindrical compressor provided by an embodiment of the present utility model includes a special machine shell 1 of the cylindrical compressor, a base 2 provided at the bottom of the special machine shell 1, and a rotating platform 3 that can be moved between the special machine shell 1 and the base 2.

[0038] Among them, in order to facilitate the movement of the rotating platform 3 between the special machine shell 1 and the base 2, a tooling base 4 with a height matching that of the base 2 is provided on one side of the base 2, that is, the height of the tooling base 4 is equivalent to that of the base 2, and the rotating platform 3 is placed on the tooling base 4. When the rotating platform 3 needs to be moved between the special machine shell 1 and the base 2, a placement plate is lapped between the tooling base 4 and the base 2, which facilitates the movement of the rotating platform 3 from the tooling base 4 to the lower part of the special machine shell 1 on the base 2.

[0039] See Figure 2 , Figure 3 , Figure 4 and Figure 5, support seats 11 are respectively arranged at the bottom of the front and rear ends of the special casing 1, and the length of the support seat 11 is less than the lengths of the air inlet cylinder 5 and the air outlet cylinder 6 at the bottom of the special casing 1 of the barrel-shaped compressor. At the top of the left and right sides of the two support seats 11, they are respectively connected to the base 2 through the lifting cylinders 12. Through the telescopic action of the lifting cylinders 12, the special casing 1 can be raised and lowered relative to the base 2.

[0040] Among them, the fixed end of the lifting cylinder 12 is fixedly connected to the top of the support seat 11, and the extending end of the lifting cylinder 12 is connected to the base 2. That is, the lifting cylinder 12 is reversely installed on the top of the support seat 11 at the connection of the special casing 1 and the support seat 11 by using the fixing frame at the fixed end of the lifting cylinder 12. Because the fixed end of the lifting cylinder 12 is heavier than its extending end, reversing the lifting cylinder 12 in this way can prevent the accidental height drop of the barrel-shaped compressor during rotation, thus playing a role in protecting the barrel-shaped compressor.

[0041] Among them, the bottom of the special casing 1 is a planar structure, and two guiding key grooves 13 are symmetrically arranged on the left and right sides of the bottom of the special casing 1.

[0042] Among them, in order to increase the connection stability between the support seat 11 and the base 2, support plates 14 with an area larger than the bottom area of the support seat 11 are respectively arranged at the bottom of the support seat 11.

[0043] See Figure 6 , the rotating platform 3 includes a platform support seat 31, a rotating tabletop 32 arranged on the upper part of the platform support seat 31, and a rotating mechanism arranged between the platform support seat 31 and the rotating tabletop 32. Under the rotation of the rotating mechanism, the rotating tabletop 32 can freely rotate 360° on the platform support seat 31.

[0044] Among them, guiding keys 33 matching the guiding key grooves 13 on the left and right sides of the bottom of the special casing 1 are arranged on the rotating tabletop 32. When the rotating platform 3 is moved to the bottom of the special casing 1, the rotating platform 3 can be positioned through the guiding key grooves 13 and the guiding keys 33.

[0045] See Figure 7 and Figure 8 , the rotating mechanism includes a motor reducer 34 arranged inside the platform support seat 31 and a slewing bearing 35 arranged on the platform support seat 31.

[0046] See Figure 9 , the slewing bearing 35 includes an outer ring 351 and an inner ring 352. The inner ring 352 is arranged inside the outer ring 351 and is slidably connected to the outer ring 351. The inner ring 352 can freely rotate circumferentially inside the outer ring 351. Among them, the outer ring 351 is fixedly connected to the platform support seat 31, and the inner ring 352 is fixedly connected to the rotating tabletop 32.

[0047] As a specific implementation manner of the present utility model, connection holes are circumferentially arranged on the outer circle 351, and threaded holes matching the connection holes of the outer circle 351 are arranged on the platform support base 31. The outer circle 351 and the platform support base 31 are fixedly connected together by countersunk head screws through the connection holes and the threaded holes.

[0048] As a specific implementation manner of the present utility model, connection holes are also circumferentially arranged on the inner circle 352, and threaded holes matching the connection holes on the inner circle 352 are arranged at the bottom of the rotating table 32. The inner circle 352 and the rotating table 32 are fixedly connected together by countersunk head screws through the connection holes and the threaded holes.

[0049] See Figure 10 , the motor reducer 34 includes a motor 341 and a pinion 342 arranged on the motor 341. Among them, the motor 341 is a motor with forward and reverse rotation and start-stop functions at any time. Driven by the motor 341, the pinion 342 can rotate forward and reverse.

[0050] Moreover, the pinion 342 meshes with the internal teeth of the inner circle 352. When the pinion 342 rotates forward or reverse driven by the motor 341, the pinion 342 can drive the inner circle 352 meshing with it to rotate forward or reverse, so that the inner circle 352 can drive the rotating table 32 fixedly connected with it to rotate forward or reverse.

[0051] As a specific implementation manner of the present utility model, in order to facilitate the movement of the rotating platform 3, spring wheels 36 are respectively arranged at the four corner positions of the bottom of the platform support base 31 of the rotating platform 3.

[0052] When the special machine shell 1 and the barrel compressor inside the special machine shell 1 press on the rotating platform, the spring wheels 36 are compressed and retracted. The guide keys 33 on the rotating table 32 cooperate with the guide key grooves 13 on the bottom plane of the special machine shell 1. When the rotating table 32 rotates, the rotating table 32 can drive the special machine shell 1 and the barrel compressor inside it to rotate.

[0053] See Figure 11 , the base 2 is a square structure formed by welding I-beams, with a cross beam arranged in the middle. The cross beam is suspended, and no additional civil engineering foundation is required at the bottom of the cross beam. Among them, the cross beam adopts a special structure and welding process, and can bear the weight of the large barrel compressor unit and the rotating platform 3.

[0054] Among them, in order to enhance the stability of the connection between the base 2 and the support seat 11 of the special casing 1, a fixing plate 21 that matches the position and size of the support plate 14 at the bottom of the support seat 11 is provided on the base 2. And, connection bolts are respectively provided on the fixing plate 21, and connection holes that match the connection bolts on the fixing plate 21 are provided on the support plate 14. The support plate 14 and the fixing plate 21 can be fixedly connected together through the connection holes and the connection bolts by connection nuts screwed on the connection bolts.

[0055] Moreover, since the lengths of the air inlet cylinder 5 and the air outlet cylinder 6 at the bottom of the special casing 1 are greater than the length of the support seat 11, a groove 22 for accommodating the protruding air inlet cylinder 5 and air outlet cylinder 6 at the bottom of the special casing 1 is further provided on the base 2.

[0056] When a core-pulling overhaul of the barrel-shaped compressor is required, if the barrel-shaped compressor cannot be directly subjected to core-pulling overhaul due to space limitations at both ends of the unit, and there is sufficient space on both sides or other parts of the barrel-shaped compressor to meet the requirements for core-pulling overhaul of the barrel-shaped compressor, then the barrel-shaped compressor needs to be rotated to a position where there is sufficient core-pulling overhaul space at both ends of the barrel-shaped compressor. The specific steps for rotating the barrel-shaped compressor are as follows.

[0057] Step 1) Move the tooling base 4 to one side of the barrel-shaped compressor and place it tightly side by side with the base 2, and place a placing plate between the tooling base 4 and the base 2.

[0058] Step 2) Use the overhead crane in the factory building to lift the rotating platform 3 onto the placing plate between the tooling base 4 and the base 1.

[0059] Step 3) Remove the non-driving side end cover of the barrel-shaped compressor, and then remove all the connection nuts at the connection between the support plate 14 of the special casing 1 and the fixing plate 21 of the base 2.

[0060] Step 4) Control the start of the lifting oil cylinders 12 through the oil circuit system so that the extending ends of the four lifting oil cylinders 12 extend synchronously, and slowly lift the special casing 1 and the barrel-shaped compressor inside it until the distance between the special casing 1 and the base 2 can just accommodate the rotating platform 3.

[0061] Step 5) Push the rotating platform 3 under the special casing 1 of the barrel-shaped compressor so that the special casing 1 is in planar contact with the rotating platform 3. The rotating platform 3 is provided with a guide key 33 at the top, and the bottom of the special casing is provided with a guide key groove 13. Therefore, the rotating platform 3 can be guided and positioned in the form of key fit.

[0062] Step 6) After the rotating platform 3 is pushed to the designated position, the four jacking cylinders 12 are simultaneously depressurized, so that the barrel compressor falls smoothly onto the rotating platform 3, and the spring wheels 36 at the bottom of the rotating platform 3 are compressed back, making it impossible to push or pull out the rotating platform 3. At this time, the weight of the barrel compressor with the special casing 1 and the rotating platform 3 is borne by the I-beam in the middle of the base 2. After the barrel compressor with the special casing 1 falls smoothly onto the rotating platform, the jacking cylinders 12 stop depressurizing and perform a pressure-holding operation.

[0063] Step 7) Start the motor reducer 34 of the rotating mechanism in the rotating platform 3. When the pinion 342 of the motor reducer 34 rotates driven by the motor 341, the pinion 342 can drive the inner circle 352 of the slewing bearing 35 meshing with it to rotate. The inner circle 352 can drive the rotating tabletop 32 fixedly connected to it to rotate, and the rotating tabletop 32 can drive the special casing 1 and the barrel compressor inside it to rotate. Thus, the rotating tabletop 32 of the rotating platform 3, the special casing 1 and the barrel compressor inside it are driven to rotate integrally by 90° through the motor reducer 34 and the slewing bearing 35 inside the rotating platform. Since the motor 341 of the motor reducer 34 has the functions of forward and reverse rotation and starting and stopping at any time, the rotating platform 3 can realize the bidirectional rotation of the barrel compressor within the range of ±360°, and at the same time, the barrel compressor can be rotated to any predetermined angle.

[0064] Step 8) When the special casing 1 and the barrel compressor inside it rotate to a position with sufficient maintenance space at both ends, subsequent core-pulling maintenance operations can be carried out on the barrel compressor.

[0065] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A cylindrical compressor in-situ rotating device, characterized in that: include A special casing (1) for a cylindrical compressor having a flat bottom structure, A base (2) is arranged at the bottom of the dedicated housing (1), and A rotating platform (3) that can be moved between the dedicated housing (1) and the base (2); Support seats (11) are respectively arranged at the bottom of the front and rear ends of the special housing (1), and the tops of the left and right sides of the two support seats (11) are respectively connected to the base (2) through lifting cylinders (12), and the special housing (1) can be raised and lowered relative to the base (2) through the telescopic action of the lifting cylinders (12); The rotating platform (3) comprises a platform support seat (31), a rotating table top (32) arranged on the upper part of the platform support seat (31), and a rotating mechanism arranged between the platform support seat (31) and the rotating table top (32) and capable of enabling the rotating table top (32) to rotate bidirectionally 360° on the platform support seat (31).

2. The cylindrical compressor in-situ rotating device according to claim 1, characterized in that: Two guide key slots (13) are symmetrically arranged on the left and right sides of the bottom of the special housing (1), and a guide key (33) matching the guide key slots (13) is arranged on the rotating table (32). When the rotating platform (3) moves to the bottom of the special housing (1), the rotating platform (3) can be positioned by the guide key slots (13) and the guide keys (33).

3. The in-situ rotating device for a cylindrical compressor according to claim 1, characterized in that: The rotating mechanism comprises a motor reducer (34) arranged inside the platform support seat (31) and a slewing bearing (35) arranged on the platform support seat (31); The slewing bearing (35) comprises an outer circle (351) and an inner circle (352), wherein the outer circle (351) is fixedly connected to the platform support seat (31), and the inner circle (352) is fixedly connected to the rotating table surface (32); The motor reducer (34) comprises a motor (341) and a pinion (342) arranged on the motor (341) and rotatable under the drive of the motor (341), and the pinion (342) is meshed with the internal teeth of the inner circle (352).

4. The in-situ rotating device for a cylindrical compressor according to claim 3, characterized in that: Spring wheels (36) are respectively arranged at the four corners of the bottom of the platform support seat (31).

5. The in-situ rotating device for a cylindrical compressor according to claim 1, characterized in that: The fixed end of the lifting cylinder (12) is fixedly connected to the top of the support seat (11), and the extended end of the lifting cylinder (12) is connected to the base (2).

6. The in-situ rotating device for a cylindrical compressor according to claim 2, characterized in that: A support plate (14) is arranged at the bottom of the support seat (11); a fixing plate (21) whose position and size match those of the support plate (14) is arranged on the base (2); connecting bolts are arranged on the fixing plate (21); connecting holes matching the connecting bolts on the fixing plate (21) are arranged on the support plate (14); the support plate (14) and the fixing plate (21) are fixedly connected via the connecting holes by the connecting bolts.

7. The in-situ rotating device for a cylindrical compressor according to claim 1, characterized in that: The base (2) is welded from I-beams, with a crossbeam arranged in the middle, and the crossbeam can be suspended.

8. The in-situ rotating device for a cylindrical compressor according to claim 7, characterized in that: The base (2) is provided with a groove (22) for accommodating an air inlet tube (5) and an air outlet tube (6) protruding from the bottom of the special housing (1).

9. The in-situ rotating device for a cylindrical compressor according to claim 7, characterized in that: A tooling base (4) having a height matching that of the base (2) is arranged on one side of the base (2), and the rotating platform (3) is placed on the tooling base (4).

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