CN212665952U - TRT blade root taper pin dismounting device - Google Patents
TRT blade root taper pin dismounting device Download PDFInfo
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- CN212665952U CN212665952U CN202020887698.4U CN202020887698U CN212665952U CN 212665952 U CN212665952 U CN 212665952U CN 202020887698 U CN202020887698 U CN 202020887698U CN 212665952 U CN212665952 U CN 212665952U
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- taper pin
- bolt
- blade root
- jacking
- bolts
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Abstract
The utility model provides a TRT blade root taper pin dismounting device, including tie bolt, jack-up bolt, colored dish and backing plate. The utility model discloses a TRT blade root taper pin dismounting device, the high-efficient difficult problem of dismantling of inserting formula rotor fork movable vane of solving. Axial force borne by 1 tensioning bolt at the tail part of the taper pin is distributed to a plurality of surrounding jacking bolts, the taper pin is pulled out by means of resultant force of the jacking bolts, and the phenomenon that the bolts or the taper pins are broken due to large torsional shear stress generated by independent knobs of the tensioning bolts is avoided. The base plate is arranged between the jacking bolt and the rotor, the head of the jacking bolt is ground to be round, the rotor is prevented from being worn when the jacking bolt is twisted, and meanwhile friction torque when the jacking bolt is twisted is reduced.
Description
Technical Field
The utility model relates to a TRT technique, concretely relates to TRT blade root taper pin dismounting device.
Background
The TRT device is a device which utilizes blast furnace top gas to do work through expansion of a turbine expander, drives a generator to generate electricity or drives other equipment to recover energy. Because the blast furnace gas dust quantity is large, the erosion corrosion to the TRT moving blade is serious, and the moving blade needs to be replaced regularly. The blade root of the TRT blade is fork-shaped, each blade is fixed by 2 taper pins, the taper pins are long (the maximum length is 350mm), the taper pins deform and are jammed due to long-period operation, and the taper pins of the blade root are difficult to disassemble during TRT maintenance.
According to the inspection, the taper pin dismounting technical scheme of pin pulling device, hydraulic dismounting and the like exists at present. The pin puller has the characteristics of lightness and convenience for disassembling the small-size taper pin, but is difficult to successfully disassemble the TRT blade root taper pin. The TRT blade root taper pin dismounting can be completed by adopting a hydraulic jack dismounting scheme, but the TRT blade root taper pin dismounting is not enough in the aspects of convenience, economy and the like
Disclosure of Invention
Not enough to prior art, the utility model aims to provide a TRT blade root taper pin dismounting device solves TRT blade root taper pin and dismantles the difficulty, the not enough problem of convenience.
Therefore, the invention adopts the following technical means:
the utility model provides a TRT blade root taper pin dismounting device, which comprises a columnar faceplate structure and a threaded fastener, wherein a through hole is processed in the center of the faceplate structure, the diameter of the through hole is matched with the outer diameter of the threaded fastener, and the threaded fastener is used for inserting and connecting a taper pin; and a plurality of jacking bolts are uniformly and symmetrically arranged on the periphery of the faceplate structure.
Specifically, the threaded fastener is used for inserting and connecting the taper pin, a bottom hole and threads are machined in the tail of the taper pin, the diameter of the bottom hole is required to ensure that the wall thickness of the taper pin is not less than 2mm, and the depth of the bottom hole is 2-2.5 times of the diameter of the bottom hole.
The column body of the utility model is generally used in the field of a flower disc structure.
Further, the number of jacking bolts is between 4 and 8.
Further, the TRT blade root taper pin dismounting device further comprises a base plate, and the threaded fastener penetrates through the disc chuck structure and the base plate simultaneously.
Further, the threaded fastener adopts a tension bolt.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a TRT blade root taper pin dismounting device, the device simple structure, it is convenient to make, and it is convenient that the taper pin is dismantled, and the TRT blade is dismantled efficiently.
The utility model discloses a TRT blade root taper pin dismounting device, the high-efficient difficult problem of dismantling of inserting formula rotor movable vane of solving. Axial force borne by 1 tensioning bolt at the tail part of the taper pin is distributed to a plurality of surrounding jacking bolts, the taper pin is pulled out by means of resultant force of the jacking bolts, and the phenomenon that the bolts or the taper pins are broken due to large torsional shear stress generated by independent knobs of the tensioning bolts is avoided.
Drawings
Fig. 1 is a front view of the apparatus.
Fig. 2 is a cross-sectional view of the device.
Wherein: the structure comprises a tension bolt 1, a jacking bolt 2, a disc chuck 3, a backing plate 4, a taper pin 5 and a rotor spindle 6.
The embodiments of the present invention will be further described with reference to the drawings and examples.
Detailed Description
Example 1:
the embodiment provides a TRT blade root taper pin dismounting device, which comprises a cylindrical disc chuck structure 3, a tension bolt 1 and a base plate 4, wherein a threaded through hole is processed in the center of the disc chuck structure 3, the tension bolt 1 penetrates through the threaded through hole, and the tension bolt 1 is used for inserting and connecting a taper pin in a threaded manner; the flower disc structure 3 is evenly symmetrical all around and is processed and have a plurality of screw holes to be provided with a plurality of jacking bolts 2, set up backing plate 4 between jacking bolt 2 and rotor, 2 head rounding of jacking bolt have avoided jacking bolt 2 to twist reverse the time wearing and tearing rotor, have reduced the friction moment of torsion when jacking bolt 2 twists reverse simultaneously.
Further, according to taper pin size and the dismantlement degree of difficulty, jack-up bolt 2's quantity is between 4-8, and the even distribution can realize the utility model discloses a purpose. For the small taper pin, a certain gap is ensured between the faceplate structure and the base plate, the bolt is directly twisted and tensioned, and the taper pin can also be pulled out, but the risk that the bolt or the taper pin is broken by the composite stress of stretching and twisting exists, the diameter of the bottom hole is required to ensure that the wall thickness of the taper pin is not less than 2mm, and the depth of the bottom hole is 2-2.5 times of the diameter of the bottom hole.
The device comprises the following use steps:
1. before the taper pin is disassembled, a bottom hole and a thread are machined at the tail of the taper pin, and the size of the bottom hole and the size of the thread are designed according to the size of the taper pin. The bottom hole and the thread are too small, the diameter of the tensioning bolt is small, and the tensioning bolt is easy to break; the bottom hole and the thread are too large, the wall of the taper pin becomes thin, and the taper pin is easy to break.
2. After the bottom hole and the threads of the taper pin are processed, as shown in figures 1 and 2, a tension bolt 1 is screwed into the taper pin through the bottom hole and the threads, the tension bolt 1 is screwed up manually, a disc chuck structure 3 and a backing plate 4 are fixed on a rotor, then 6 jacking bolts 2 are screwed up manually, the heads of the 6 jacking bolts 2 are ensured to be in contact with the backing plate 4, the stress is basically uniform, and then the number 1 of the jacking bolts 2 is used*-4*-2*-5*-6*-3*The 6 jacking bolts 2 are circularly screwed down for multiple times by using an inner hexagonal wrench until the taper pin 5 is pulled out, the taper pin 5 is detached from the tensioning bolt 1, and the next taper pin 5 can be continuously detached. Such asA plurality of sets of dismounting devices are processed, so that a plurality of persons can dismount at the same time, and the dismounting efficiency is improved.
Claims (6)
1. The TRT blade root taper pin dismounting device is characterized by comprising a cylindrical body and a threaded fastener, wherein a through hole is machined in the center of the cylindrical body, the diameter of the through hole is matched with the outer diameter of the threaded fastener, and the threaded fastener is used for inserting and connecting a taper pin; a plurality of jacking bolts (2) are uniformly and symmetrically arranged on the periphery of the cylindrical body, and the setting directions of the jacking bolts (2) are parallel to the threaded through holes.
2. The apparatus according to claim 1, wherein the threaded fastener is adapted to receive and connect the taper pin, and a bottom hole and a thread are formed in the end portion of the taper pin, the diameter of the bottom hole being such that the wall thickness of the taper pin is not less than 2mm, and the depth of the bottom hole is 2 to 2.5 times the diameter of the bottom hole.
3. The TRT blade root taper pin removal apparatus according to claim 1, wherein the cylindrical body comprises a faceplate structure (3).
4. The TRT blade root taper pin removal apparatus as claimed in claim 1, wherein the number of jacking bolts (2) is between 4 and 8.
5. The TRT blade root taper pin removal device according to claim 3, further comprising a backing plate (4), wherein the threaded fastener passes through both the faceplate structure (3) and the backing plate (4).
6. The TRT blade root taper pin removal apparatus according to claim 1 or 2, wherein the threaded fastener is a tension bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020887698.4U CN212665952U (en) | 2020-05-22 | 2020-05-22 | TRT blade root taper pin dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020887698.4U CN212665952U (en) | 2020-05-22 | 2020-05-22 | TRT blade root taper pin dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212665952U true CN212665952U (en) | 2021-03-09 |
Family
ID=74812302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020887698.4U Active CN212665952U (en) | 2020-05-22 | 2020-05-22 | TRT blade root taper pin dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212665952U (en) |
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2020
- 2020-05-22 CN CN202020887698.4U patent/CN212665952U/en active Active
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