Tool for disassembling and assembling internal bushing of compressor guide vane

Abstract

The tool comprises a sliding rod, a grip is arranged at one end of the sliding rod, the other end of the sliding rod is a connecting end, a sliding weight is arranged on the sliding rod in a sliding mode, the sliding weight can slide along the sliding rod, an extractor is arranged at the connecting end of the sliding rod and comprises an extractor body, the extractor body is hollow, and the extractor body is connected with the handle. At least two tensioning pieces distributed circumferentially are arranged at the end, away from the sliding rod, of the extractor body, the outer diameter of the extractor body and the outer diameter of the tensioning pieces are both smaller than the inner diameter of the inner lining, and protruding blocks turning outwards are arranged at the tail ends of the tensioning pieces. The sliding rod and the sliding weight are used in cooperation with the extractor, under the condition that it is ensured that the bush and a shell are safe and not damaged, bush disassembling and assembling work can be safely and rapidly completed through the impact effect of the sliding weight, and the problems that the disassembling and assembling efficiency of the bush in the compressor guide vane is low, and the forcible entry rate is high are solved.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant compressor equipment, and more particularly to a tool for disassembling and assembling the internal bushing of the compressor guide vane. Background Technology

[0002] Some existing nuclear power plants use T22S type open centrifugal compressors in their air-cooled and water-cooled refrigeration units. The compressor load is automatically adjusted by the inlet guide vanes. The main structure of the guide vane consists of seven blades evenly arranged circumferentially. The blade shaft is clamped and fixed to the guide vane shell by the shaft shoulder and the drive plate. The shaft and the guide vane shell are separated by inner and outer bushings. The Teflon bushings serve to fix the shaft circumferentially and prevent direct contact and friction between the guide vane shaft and the guide vane shell. The bushings are fixed to the guide vane shell by clamping force: when installing the inner bushing, a tool is needed to pull the inner bushing into the shell from the inside out; when removing the outer bushing, a tool is needed to pull the outer bushing out of the shell from the inside out.

[0003] Because the bushing is only 1mm thick on one side, the Teflon material has limited strength, and the bushing installation space is extremely narrow, it is impossible to complete the bushing installation and removal work safely and quickly under the current conditions. Utility Model Content

[0004] To address one of the technical problems existing in the prior art, this application provides a tool for disassembling and assembling the internal bushing of the compressor guide vane, ensuring that the bushing disassembly and assembly work can be completed safely and quickly without damaging the bushing and housing.

[0005] According to some embodiments of this application, a tool for disassembling and assembling the internal bushing of a compressor guide vane includes: a slide rod, one end of which is provided with a handle, and the other end of which is a connecting end; a sliding hammer, which is slidably disposed on the slide rod; and a puller, which is connected to the connecting end of the slide rod. The puller includes a puller body, the interior of which is hollow, and at least two circumferentially distributed tensioning plates are provided at the end of the puller body away from the slide rod. The outer diameter of the puller body and the tensioning plates are both smaller than the inner diameter of the internal bushing, and the end of the tensioning plate is provided with an outwardly flared protrusion.

[0006] In some embodiments, the connecting end has a connecting cavity, the inner wall of the connecting cavity is provided with a first internal thread for connection, the extractor is provided with a first connector, the outer diameter of the first connector is smaller than the inner diameter of the connecting cavity, and the outer side of the first connector is provided with a first external thread that matches the first internal thread; the first connector extends into the connecting cavity and is threadedly connected by the cooperation of the first external thread and the first internal thread.

[0007] In some embodiments, the sum of the lengths of the extractor body and the tensioning plate is greater than the length of the inner bushing.

[0008] In some embodiments, the extractor is provided with an adjusting nut, and the extractor body is provided with an adjuster. One end of the adjuster is provided with a second external thread adapted to the adjusting nut, and the adjuster is provided with a tapered portion. When the adjusting nut rotates, it drives the adjuster to move inside the extractor body, and the tapered portion expands the tension plate, causing the tension plate to expand outward.

[0009] In some embodiments, when the extractor body enters the inner bushing, the outer wall of the extractor body is in close contact with the inner wall of the inner bushing.

[0010] In some embodiments, the outer diameter of the extractor body is larger than the outer diameter of the tensioning plate.

[0011] In some embodiments, the extractor body and the tensioning plate are integrally formed.

[0012] In some embodiments, the length of the slide bar is greater than 20cm.

[0013] In some embodiments, the diameter of the grip is larger than the diameter of the slide bar.

[0014] In some embodiments, the outer side of the grip is covered with plastic or rubber.

[0015] The beneficial effects of this application are:

[0016] This application provides a tool for disassembling and assembling the internal bushing of a compressor guide vane. Based on the characteristics of the field equipment, it uses a sliding bar and a sliding hammer in conjunction with a extractor to ensure that the bushing disassembly and assembly can be completed safely and quickly by means of the impact of the sliding hammer without damaging the bushing and housing. This solves the problems of low efficiency and high breakage rate in disassembling and assembling the internal bushing of the compressor guide vane, and provides a reference for the design and development of similar internal bushing disassembly and assembly tools.

[0017] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this application, the following description will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this application and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a schematic diagram of the tool provided in this application for disassembling and assembling the internal bushing of the compressor guide vane;

[0020] Figure 2 This is a schematic diagram of the specific structure of the extractor;

[0021] Figure 3 This is a schematic diagram of a structure for an internal bushing mounting head.

[0022] Label Explanation:

[0023] Slide bar 10, handle 11, slide weight 20, extractor 30;

[0024] First connector 310, first external thread 311, extractor body 320, tensioning plate 321, protrusion 322, cavity 323, adjusting nut 330, adjuster 340, second external thread 341, tapered part 342;

[0025] The inner bushing mounting head 40, the second connector 410, the third external thread 411, the mounting head body 420, and the baffle 430 are all included. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] In existing technologies, an internal bearing extractor is typically used in conjunction with a two-legged puller to disassemble and install the internal side bushing. However, this method has the following drawbacks: First, before installation, the internal bearing extractor needs to be adjusted according to the outer diameter of the flange of the internal bushing, and the two-legged puller needs to be adjusted before each bushing is installed, which is time-consuming. Second, the flange of the internal bearing extractor has a chamfer, which does not match the flange position of the internal bushing well, making it easy to detach during the pulling process. After detachment, it needs to be readjusted again, and repeated detachment can easily cause wear on the internal bushing. Third, the alignment of the internal bearing extractor is not good, and it is easy to jam when disassembling and installing the internal bushing. After jamming, the internal bushing needs to be knocked out and reinstalled, which can easily cause wear or even damage to the internal bushing.

[0030] The following is in conjunction with the appendix Figures 1 to 3 The provided embodiments further illustrate the tools proposed in this application for disassembling and assembling the internal bushings of compressor guide vanes.

[0031] like Figure 1 and Figure 2As shown, in some embodiments, this application provides a tool for disassembling and assembling the internal bushing of a compressor guide vane, including a slide rod 10. One end of the slide rod 10 is provided with a handle 11, and the other end of the slide rod 10 is a connecting end. A sliding hammer 20 is slidably disposed on the slide rod 10, and the sliding hammer 20 can slide along the slide rod 10. The handle 11 is used to limit the displacement of the sliding hammer 20 and to bear the impact force of the sliding hammer 20. A puller 30 is provided on the connecting end of the slide rod 10. The puller 30 includes a puller body 320, which is hollow inside. At least two circumferentially distributed tensioning plates 321 are provided at the end of the puller body 320 away from the slide rod 10. The outer diameter of the puller body 320 and the tensioning plates 321 are both smaller than the inner diameter of the internal bushing. The end of the tensioning plate 321 is provided with an outwardly flared protrusion 322. In some embodiments of this application, the extractor 30 is detachably connected to the connecting end of the slide bar 10. The construction personnel can select an appropriate size extractor 30 to connect to the slide bar 10 according to the inner diameter of the inner bushing, ensuring that the extractor 30 and the inner bushing are fully compatible, thereby improving the success rate of the operation. The process of disassembling and assembling the internal bushing of the compressor guide vane using the tool of this application is as follows: When removing the internal bushing, connect and assemble the slide rod 10 with the extractor 30, insert the extractor 30 into the internal bushing installation position, and make the protrusion 322 of the tension plate 321 on the extractor 30 lock with the internal bushing. The slide hammer 20 slides along the slide rod 10, and the internal bushing is pulled out by the impact pulling force of the slide hammer 20. When installing the internal bushing, first assemble the internal bushing with the extractor 30, with the protrusion 322 close to the flange of the internal bushing. Then, place the assembly into the installation position of the internal bushing, insert the slide rod 10 into the installation position of the internal bushing, connect and assemble the connecting end of the slide rod 10 with the extractor 30, slide the slide hammer 20 along the slide rod 10, and pull the internal bushing into the installation position by the impact force of the slide hammer 20. Finally, remove the slide rod 10 and the extractor 30. The tool for disassembling and assembling the internal bushing of the compressor guide vane provided in this application can ensure that the disassembly and assembly of the internal bushing can be completed safely and quickly by utilizing the impact of the sliding hammer 20 without damaging the internal bushing and housing. This solves the problems of low disassembly and assembly efficiency and high breakage rate of the internal bushing of the compressor guide vane.

[0032] Furthermore, such as Figure 1 and Figure 2As shown, in some embodiments, the connecting end of the slide rod 10 has a connecting cavity, and the inner wall of the connecting cavity is provided with a first internal thread for connection; the extractor 30 is provided with a first connector 310, the outer diameter of the first connector 310 is smaller than the inner diameter of the connecting cavity, and the outer side of the first connector 310 is provided with a first external thread 311 that matches the first internal thread; the first connector 310 extends into the connecting cavity, and a threaded connection is achieved through the cooperation of the first external thread 311 and the first internal thread. The threaded connection between the extractor 30 and the slide rod 10 ensures the convenience and reliability of the connection. It is conceivable that in other embodiments of this application, the extractor 30 and the slide rod 10 can also be connected in other ways, such as by a locking structure, interference fit, etc.

[0033] Furthermore, such as Figure 2 As shown, in some embodiments, the sum of the lengths of the extractor body 320 and the tensioning plate 321 is greater than the length of the inner bushing. This design ensures that when the extractor 30 enters the inner bushing, a portion of the extractor 30 remains outside the inner bushing to allow the tensioning plate 321 to be stretched and tensioned.

[0034] Furthermore, such as Figure 2 As shown, in some embodiments, the extractor 30 is provided with an adjusting nut 330, and the extractor body 320 has a cavity 323 inside, within which an adjuster 340 is disposed. One end of the adjuster 340 is provided with a second external thread 341 adapted to the adjusting nut 330, and the adjuster 340 is threadedly connected to the adjusting nut 330 through the second external thread 341. The lower part of the adjuster 340 is provided with a tapered portion 342, and in some embodiments, the diameter of the tapered portion 342 gradually increases in the direction away from the slide rod 10. When the adjusting nut 330 is rotated, the adjusting nut 330 drives the adjuster 340 to move horizontally within the extractor body 320 via its thread. When the tapered portion 342 moves away from the slide rod 10, the tensioning plate 321 retracts inward, releasing the lock between the protrusion 322 and the inner bushing. When the tapered portion 342 moves in the opposite direction, the tensioning plate 321 expands outward, and the protrusion 322 locks onto the flange of the inner bushing. By utilizing the cooperation of the adjusting nut 330 and the adjuster 340, the locking relationship between the extractor 30 and the inner bushing can be easily controlled, thus better completing the disassembly and assembly tasks.

[0035] Furthermore, such as Figure 2 As shown, in some embodiments, when the extractor body 320 enters the inner bushing, the outer wall of the extractor body 320 is in close contact with the inner wall of the inner bushing to fit and protect the inner bushing and ensure good alignment.

[0036] Furthermore, in some embodiments, the outer diameter of the extractor body 320 is larger than the outer diameter of the tensioning plate 321. For example... Figure 2 As shown, in some embodiments, the extractor 30 is provided with two symmetrically distributed tension plates 321, and the outer diameter of the tension plates 321 is smaller than the outer diameter of the extractor body 320. This design facilitates the tension plates 321 to enter the inner bushing for locking, and can also reduce the distance between the tension plates 321 to reduce the volume and weight of the regulator 340.

[0037] Furthermore, such as Figure 2 As shown, in some embodiments, the extractor body 320 and the tensioning plate 321 are integrally formed, reducing the number of accessories. Furthermore, the extractor body 320 is generally a hollow cylinder, and multiple slits are provided on the extractor body 320 along its length, separating the tensioning plate 321. This structure facilitates processing and production, and can reduce costs.

[0038] Furthermore, such as Figure 1 As shown, in some embodiments, the length of the slide bar 10 is greater than 20cm to ensure that the slide hammer 20 has sufficient sliding distance to accumulate kinetic energy and increase the impact force.

[0039] Furthermore, such as Figure 1 As shown, in some embodiments, the diameter of the grip 11 is larger than the diameter of the slide bar 10, ensuring that the grip 11 can limit the displacement of the slide hammer 20 and absorb the impact force of the slide hammer 20.

[0040] Furthermore, such as Figure 1 As shown, in some embodiments, the handle 11 is covered with plastic or rubber on the outside to facilitate the operator's grip and application of force.

[0041] Furthermore, such as Figure 3 As shown, in some embodiments, it is also possible to utilize Figure 3The internal bushing mounting head 40 shown replaces the extractor 30 for installing the internal bushing. Specifically, the internal bushing mounting head 40 includes a mounting head body 420, one end of which is provided with a second connector 410, which has a third external thread 411 for threaded connection with the slide rod 10. The outer diameter of the mounting head body 420 matches the inner diameter of the internal bushing, so that when the mounting head body 420 enters the internal bushing, it can fit against the inner wall of the internal bushing to protect the internal bushing and ensure good alignment. The other end of the mounting head body 420 is provided with a baffle 430, the outer diameter of which is larger than the inner diameter of the internal bushing. After the mounting head body 420 enters the internal bushing, the baffle 430 can lock onto the flange of the internal bushing to provide tension to the internal bushing. When installing the inner bushing, first assemble the inner bushing mounting head 40 with the inner bushing, that is, insert the mounting head body 420 into the inner bushing, and lock the baffle 430 onto the flange of the inner bushing, while the second connector 410 extends out from the other end of the inner bushing; then place the assembly into the installation position of the inner bushing; insert the slide rod 10 into the installation position of the inner bushing, and connect the connecting end of the slide rod 10 to the second connector 410; slide the slide hammer 20 along the slide rod 10, and use the impact force of the slide hammer 20 to pull the inner bushing into the installation position; finally, remove the slide rod 10 and the inner bushing mounting head 40.

[0042] It is understood that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that, for those skilled in the art, without departing from the concept of this application, the above technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the protection scope of this application. Therefore, all equivalent transformations and modifications made within the scope of the claims of this application should fall within the coverage of the claims of this application.

Claims

1. A tool for disassembling and assembling the internal bushing of a compressor guide vane, characterized in that, include: A sliding rod, one end of which is provided with a handle, and the other end of which is a connecting end; A sliding weight, which is slidably mounted on the slide rod; The extractor is connected to the connecting end of the slide rod. The extractor includes an extractor body, which is hollow inside. At least two circumferentially distributed tension plates are provided at the end of the extractor body away from the slide rod. The outer diameter of the extractor body and the tension plates are both smaller than the inner diameter of the inner bushing. The end of the tension plate is provided with an outwardly flared protrusion.

2. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The connecting end has a connecting cavity, and the inner wall of the connecting cavity is provided with a first internal thread for connection. The extractor is provided with a first connector, the outer diameter of the first connector is smaller than the inner diameter of the connecting cavity, and the outside of the first connector is provided with a first external thread that matches the first internal thread. The first connector extends into the inner cavity of the connector and is threadedly connected through the engagement of the first external thread and the first internal thread.

3. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The sum of the lengths of the extractor body and the tensioning plate is greater than the length of the inner bushing.

4. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 3, characterized in that, The extractor is provided with an adjusting nut, and the extractor body is provided with an adjuster. One end of the adjuster is provided with a second external thread that is adapted to the adjusting nut, and the adjuster is provided with a tapered part. When the adjusting nut rotates, it drives the adjuster to move inside the extractor body, and the tapered part expands the tension plate, causing the tension plate to expand outward.

5. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1 or 3, characterized in that, When the extractor body enters the inner bushing, the outer wall of the extractor body is in close contact with the inner wall of the inner bushing.

6. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 5, characterized in that, The outer diameter of the extractor body is larger than the outer diameter of the tensioning plate.

7. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The extractor body and the tensioning plate are integrally formed.

8. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The length of the slide bar is greater than 20cm.

9. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The diameter of the grip is larger than the diameter of the slide bar.

10. The tool for disassembling and assembling the internal bushing of the compressor guide vane as described in claim 1, characterized in that, The grip is covered with plastic or rubber on the outside.

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