CN215967329U - Multistage cantilever type axial compressor turbine locking frock - Google Patents
Multistage cantilever type axial compressor turbine locking frock Download PDFInfo
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- CN215967329U CN215967329U CN202122238603.3U CN202122238603U CN215967329U CN 215967329 U CN215967329 U CN 215967329U CN 202122238603 U CN202122238603 U CN 202122238603U CN 215967329 U CN215967329 U CN 215967329U
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Abstract
The utility model relates to the technical field of turbine locking devices of multistage axial flow turboexpanders, in particular to a multistage cantilever type axial flow turbine locking tool; the double-stretching double-tensioning piston assembly comprises a piston assembly, a supporting sleeve, a double-stretching sleeve and a double-pre-tightening sleeve; the support sleeve has an operating window; through on with two tensile sleeve screw in pull rods, and make two pretension sleeve covers on lock nut, readjust support sleeve lower extreme and turbine wheel hub laminating, exert rated pressure to piston assembly inside through outside hydraulic means, can make two tensile sleeves exert rated tensile force to the pull rod, rotate the pretension sleeve again and screw up lock nut, thereby accomplish the locking, and then can realize applying rated power, even pretightning force to all pull rods and lock nut, guarantee that the load is equitable and even between the turbine contact surface, furthest guarantees the due quality of turbine portion cover, and then improves the quality of turbo expander.
Description
Technical Field
The utility model relates to the technical field of turbine locking devices of multistage axial flow turboexpanders, in particular to a multistage cantilever type axial flow turbine locking tool.
Background
In cantilever type axial compressor turbine equipment, a plurality of groups of uniformly distributed pull rods and locking nuts are usually adopted for fastening a multistage turbine, the structural stability of a rotor system is directly influenced by the installation quality of the multistage turbine, so that rated and uniform pretightening force is strictly required to be applied to all the pull rods and the locking nuts in the assembling process of the multistage turbine, reasonable and uniform loading between contact surfaces of the turbine is ensured, the due quality of a turbine sleeve is ensured to the maximum extent, the whole pretightening process is usually carried out in a narrow flow channel, and in order to ensure the reliability of the assembling quality, a proper tool needs to be designed in the turbine pretightening stage so as to smoothly complete assembling, the assembling efficiency and the assembling quality are improved, and the tool for locking the multistage cantilever type axial compressor turbine does not exist at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multistage cantilever type axial flow turbine locking tool which can apply rated and uniform pretightening force to a pull rod and a locking nut on a multistage turbine and ensure that the contact surfaces of the turbine are loaded reasonably and uniformly.
In order to achieve the aim, the utility model provides a multi-stage cantilever type axial flow turbine locking tool which comprises a piston assembly, a supporting sleeve, a double-stretching sleeve and a double-pre-tightening sleeve; the supporting sleeve is fixedly connected with the piston assembly and is positioned below the piston assembly; the supporting sleeve is provided with an operating window which is positioned at the side edge of the supporting sleeve; the double-stretching sleeve is fixedly connected with the piston assembly and is positioned below the piston assembly; the double-pre-tightening sleeve and the double-stretching sleeve are rotationally connected, and the double-stretching sleeve is wrapped and located inside the supporting sleeve.
The multistage cantilever type axial flow turbine locking tool further comprises a sealing ring; the sealing ring is fixedly connected with the double-stretching sleeve and is positioned between the double-stretching sleeve and the double-pre-tightening sleeve.
Through the sealing washer can improve two tensile sleeves with the cooperation tightness of two pretightning sleeves.
The piston assembly comprises a bearing frame, a piston cylinder and a piston; the piston cylinder is fixedly connected with the bearing frame and is positioned above the bearing frame; the piston is connected with the piston cylinder in a sliding mode, is fixedly connected with the supporting sleeve and is positioned between the piston cylinder and the supporting sleeve.
The bearing frame can support the piston cylinder, rated pressure is applied to a sealing cavity between the piston and the piston cylinder through an external hydraulic device, and therefore rated tension can be applied to the pull rod by the double-stretching sleeve.
The bearing frame comprises an upper bearing plate, two movable supporting pieces, a lower bearing plate and a fine adjustment bolt; the upper bearing plate is fixedly connected with the piston cylinder and is positioned on the side edge of the piston cylinder; the two movable supporting pieces are respectively fixedly connected with the upper bearing plate and are positioned at two sides of the upper bearing plate; the lower bearing plate is respectively and fixedly connected with the two movable supporting pieces and is positioned below the two movable supporting pieces; the fine tuning bolt is in threaded connection with the lower bearing plate, is fixedly connected with the double-stretching sleeve and is positioned above the double-stretching sleeve.
The piston cylinder can be supported by the upper bearing plate, the two movable supporting pieces and the lower bearing plate; the lower bearing plate can prevent the position of the supporting sleeve from dislocation; through the fine setting bolt, can adjust the initial condition of two tensile sleeves for tensile in-process, the bearing tension is even.
Wherein the movable support comprises a ball bearing and a support plate; the ball bearing is fixedly connected with the upper bearing plate and is positioned below the upper bearing plate; the support plate is rotatably connected with the ball bearing, is fixedly connected with the lower bearing plate and is positioned between the ball bearing and the lower bearing plate.
The two support plates can have swing spaces through the two ball bearings, unbalance generated by the double-stretching sleeve can be eliminated through position adjustment of the two support plates, and the double-stretching sleeve is stressed uniformly.
Wherein the support sleeve comprises an upper gland, a hollow cylinder and a lower gland; the upper gland is fixedly connected with the piston and is positioned below the piston; the hollow cylinder is fixedly connected with the upper gland, penetrates through the lower bearing plate and is positioned below the upper gland; the lower gland is fixedly connected with the hollow cylinder and is positioned below the hollow cylinder.
Through gland can ensure that pressure load evenly applies to turbine ring week down, guarantees that turbine contact surface atress is even, through the cavity section of thick bamboo can inject the radial position of two pretension sleeves.
Wherein the double stretch sleeve comprises two stretch sleeve bodies; the two stretching sleeve bodies are respectively and fixedly connected with the fine adjustment bolt and are respectively positioned below the fine adjustment bolt.
Through two tensile sleeve bodies, can exert pulling force to two turbine pull rods simultaneously, guarantee that the turbine pull rod of two symmetrical positions receives the pretightning force identical, make the atress between the multistage turbine after the pretension even.
The double-pre-tightening sleeve comprises two pre-tightening sleeve bodies; the two pre-tightening sleeve bodies are respectively and rotationally connected with the two stretching sleeve bodies and respectively coat the two stretching sleeve bodies.
Through two the pretension sleeve body can be convenient for rotate the lock nut of two symmetric positions, raises the efficiency.
According to the multi-stage cantilever type axial flow turbine locking tool, one end, far away from a piston assembly, of a double-stretching sleeve is provided with an internal thread matched with an external thread of a pull rod, and one end, far away from the piston assembly, of the double-pre-tightening sleeve is provided with a hexagonal structure matched with a locking nut; when the double-stretching-sleeve-type locking device is used, the double-stretching sleeve is screwed into the pull rod, the double-stretching sleeve covers the locking nut, the lower end of the supporting sleeve is adjusted to be attached to the turbine hub, rated pressure is applied to the interior of the piston assembly through an external hydraulic device, rated tension is applied to the pull rod by the double-stretching sleeve, a screwing tool extends into the supporting sleeve from the operation window to rotate the pre-stretching sleeve, the pre-stretching sleeve drives the locking nut to rotate, and the locking nut can be screwed, so that locking is completed; through the mode, rated and uniform pretightening force can be applied to all the pull rods and the locking nuts in a narrow flow channel space, the contact surfaces of the turbines are loaded reasonably and uniformly, the due quality of the turbine part sleeve is guaranteed to the maximum extent, and the quality of the turbine expander is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional structural view of a multi-stage cantilever type axial flow turbine locking tool of the present invention;
FIG. 2 is a schematic structural diagram of a multistage cantilever-type axial flow turbine locking tool used in cooperation with a cantilever-type turbine according to the present invention;
fig. 3 is an enlarged view of a detail a of fig. 1.
1-piston component, 2-supporting sleeve, 3-double stretching sleeve, 4-double pre-tightening sleeve, 5-sealing ring, 6-locking nut, 7-pull rod, 8-multistage turbine, 9-expander main shaft, 11-bearing frame, 12-piston cylinder, 13-piston, 20-operating window, 21-upper gland, 22-hollow cylinder, 23-lower gland, 31-stretching sleeve body, 41-pre-tightening sleeve body, 111-upper bearing plate, 112-movable supporting piece, 113-lower bearing plate, 114-fine tuning bolt, 1121-ball bearing and 1122-supporting plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 3, the present invention provides a multi-stage cantilever type axial turbine locking tool: the multi-stage cantilever type axial flow turbine locking tool comprises a piston assembly 1, a supporting sleeve 2, a double-stretching sleeve 3 and a double-pre-tightening sleeve 4; the supporting sleeve 2 is fixedly connected with the piston assembly 1 and is positioned below the piston assembly 1; the supporting sleeve 2 is provided with an operation window 20, and the operation window 20 is positioned at the side of the supporting sleeve 2; the double-stretching sleeve 3 is fixedly connected with the piston assembly 1 and is positioned below the piston assembly 1; the double-pretightening sleeve 4 is rotationally connected with the double-stretching sleeve 3, coats the double-stretching sleeve 3 and is positioned in the supporting sleeve 2.
In the embodiment, one end of the double-stretching sleeve 3, which is far away from the piston assembly 1, is provided with an internal thread matched with an external thread of the pull rod 7, and one end of the double-pre-tightening sleeve 4, which is far away from the piston assembly 1, is provided with a hexagonal structure matched with the locking nut 6; when the double-stretching sleeve type turbine wheel hub locking device is used, the double-stretching sleeve 3 is screwed into the pull rod 7, the double-pre-stretching sleeve 4 covers the locking nut 6, the lower end of the supporting sleeve 2 is adjusted to be attached to a turbine wheel hub, rated pressure is applied to the interior of the piston assembly 1 through an external hydraulic device, at the moment, rated tension is applied to the pull rod 7 by the double-stretching sleeve 3, a tightening tool is stretched into the supporting sleeve 2 from the operation window 20 to rotate the pre-stretching sleeve, the pre-stretching sleeve drives the locking nut 6 to rotate, and the locking nut 6 can be tightened so as to complete locking; through the mode, rated and uniform pretightening force can be applied to all the pull rods 7 and the locking nuts 6 in a narrow flow channel space, the contact surfaces of the turbines are loaded reasonably and uniformly, the due quality of the turbine sleeves is guaranteed to the maximum extent, and the quality of the turbine expander is further improved.
Further, the multistage cantilever type axial flow turbine locking tool further comprises a sealing ring 5; the sealing ring 5 is fixedly connected with the double-stretching sleeve 3 and is positioned between the double-stretching sleeve 3 and the double-pre-tightening sleeve 4.
In the present embodiment, the sealing ring 5 can improve the fit tightness between the dual tensile sleeve 3 and the dual pre-tightening sleeve 4, thereby facilitating the operation.
Further, the piston assembly 1 comprises a force bearing frame 11, a piston cylinder 12 and a piston 13; the piston cylinder 12 is fixedly connected with the bearing frame 11 and is positioned above the bearing frame 11; the piston 13 is connected with the piston cylinder 12 in a sliding manner, is fixedly connected with the supporting sleeve 2 and is positioned between the piston cylinder 12 and the supporting sleeve 2.
In the present embodiment, the carrier 11 can support the piston cylinder 12, and an external hydraulic device applies a rated pressure to a sealed cavity between the piston 13 and the piston cylinder 12, so that the double-stretching sleeve 3 can apply a rated tensile force to the pull rod 7, and further can apply a rated and uniform pre-tightening force to the pull rod 7 and the lock nut 6.
Further, the carrier 11 includes an upper carrier plate 111, two movable supporting members 112, a lower carrier plate 113 and a fine tuning bolt 114; the upper bearing plate 111 is fixedly connected with the piston cylinder 12 and is positioned on the side edge of the piston cylinder 12; the two movable supporting pieces 112 are respectively and fixedly connected with the upper bearing plate 111 and are positioned at two sides of the upper bearing plate 111; the lower force bearing plate 113 is respectively and fixedly connected with the two movable supporting pieces 112 and is positioned below the two movable supporting pieces 112; the fine adjustment bolt 114 is in threaded connection with the lower bearing plate 113, is fixedly connected with the double-stretching sleeve 3, and is located above the double-stretching sleeve 3.
In the present embodiment, the piston cylinder 12 can be supported by the upper bearing plate 111, the two movable supports 112 and the lower bearing plate 113; the lower bearing plate 113 can prevent the position of the support sleeve 2 from dislocation; through the fine tuning bolt 114, the initial state of the double-stretching sleeve 3 can be adjusted, so that the tensile force is uniformly borne in the stretching process, and the assembling quality is improved.
Further, the movable support 112 includes a ball bearing 1121 and a support plate 1122; the ball bearing 1121 is fixedly connected with the upper bearing plate 111 and is positioned below the upper bearing plate 111; the support plate 1122 is rotatably connected to the ball bearing 1121, is fixedly connected to the lower force bearing plate 113, and is located between the ball bearing 1121 and the lower force bearing plate 113.
In this embodiment, the two ends of the upper bearing plate 111 are connected to the two support plates 1122 through the two rolling bearings, and the upper bearing plate 111 and the two support plates 1122 are not completely fixed by a tensile force, so that the two support plates 1122 have a swing space, and the unbalance generated by the double-stretching sleeve 3 can be eliminated by adjusting the positions of the two support plates 1122, so that the double-stretching sleeve 3 is uniformly stressed.
Further, the support sleeve 2 comprises an upper gland 21, a hollow cylinder 22 and a lower gland 23; the upper gland 21 is fixedly connected with the piston 13 and is positioned below the piston 13; the hollow cylinder 22 is fixedly connected with the upper gland 21, penetrates through the lower bearing plate 113 and is positioned below the upper gland 21; the lower gland 23 is fixedly connected with the hollow cylinder 22 and is positioned below the hollow cylinder 22.
In the present embodiment, the shape of the lower gland 23 matches with the turbine end face, so that the lower gland can be tightly attached to the turbine end face, thereby ensuring that the pressure load is uniformly applied to the periphery of the turbine, ensuring that the stress on the turbine contact surface is uniform, and the radial position of the dual pre-tightening sleeve 4 can be limited through the hollow cylinder 22.
Further, the double stretching sleeve 3 comprises two stretching sleeve bodies 31; the two stretching sleeve bodies 31 are respectively and fixedly connected with the fine adjustment bolt 114 and are respectively positioned below the fine adjustment bolt 114.
In this embodiment, two stretching sleeve bodies 31 are symmetrically distributed, and through two stretching sleeve bodies 31, pulling force can be applied to two turbine pull rods 7 simultaneously, so that the pretightening force applied to the turbine pull rods 7 at two symmetrical positions is completely the same, and the prestressed multistage turbines 8 are uniformly stressed, and the quality is reliable.
Further, the dual pre-tightening sleeve 4 comprises two pre-tightening sleeve bodies 41; the two pre-tightening sleeve bodies 41 are rotatably connected with the two stretching sleeve bodies 31 respectively and wrap the two stretching sleeve bodies 31 respectively.
In this embodiment, two the pre-tightening sleeve body 41 is symmetrically distributed, and through two the pre-tightening sleeve body 41 can be convenient for rotate the lock nut 6 at two symmetrical positions, thereby improving the efficiency.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (8)
1. A multi-stage cantilever type axial flow turbine locking tool is characterized in that,
the double-stretching double-tensioning piston assembly comprises a piston assembly, a supporting sleeve, a double-stretching sleeve and a double-pre-tightening sleeve; the supporting sleeve is fixedly connected with the piston assembly and is positioned below the piston assembly; the supporting sleeve is provided with an operating window which is positioned at the side edge of the supporting sleeve; the double-stretching sleeve is fixedly connected with the piston assembly and is positioned below the piston assembly; the double-pre-tightening sleeve and the double-stretching sleeve are rotationally connected, and the double-stretching sleeve is wrapped and located inside the supporting sleeve.
2. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 1,
the multistage cantilever type axial flow turbine locking tool further comprises a sealing ring; the sealing ring is fixedly connected with the double-stretching sleeve and is positioned between the double-stretching sleeve and the double-pre-tightening sleeve.
3. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 1,
the piston assembly comprises a bearing frame, a piston cylinder and a piston; the piston cylinder is fixedly connected with the bearing frame and is positioned above the bearing frame; the piston is connected with the piston cylinder in a sliding mode, is fixedly connected with the supporting sleeve and is positioned between the piston cylinder and the supporting sleeve.
4. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 3,
the bearing frame comprises an upper bearing plate, two movable supporting pieces, a lower bearing plate and a fine adjustment bolt; the upper bearing plate is fixedly connected with the piston cylinder and is positioned on the side edge of the piston cylinder; the two movable supporting pieces are respectively fixedly connected with the upper bearing plate and are positioned at two sides of the upper bearing plate; the lower bearing plate is respectively and fixedly connected with the two movable supporting pieces and is positioned below the two movable supporting pieces; the fine tuning bolt is in threaded connection with the lower bearing plate, is fixedly connected with the double-stretching sleeve and is positioned above the double-stretching sleeve.
5. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 4,
the movable support comprises a ball bearing and a support plate; the ball bearing is fixedly connected with the upper bearing plate and is positioned below the upper bearing plate; the support plate is rotatably connected with the ball bearing, is fixedly connected with the lower bearing plate and is positioned between the ball bearing and the lower bearing plate.
6. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 4,
the supporting sleeve comprises an upper gland, a hollow cylinder and a lower gland; the upper gland is fixedly connected with the piston and is positioned below the piston; the hollow cylinder is fixedly connected with the upper gland, penetrates through the lower bearing plate and is positioned below the upper gland; the lower gland is fixedly connected with the hollow cylinder and is positioned below the hollow cylinder.
7. The multi-stage cantilever type axial flow turbine locking tool set forth in claim 4,
the double-stretching sleeve comprises two stretching sleeve bodies; the two stretching sleeve bodies are respectively and fixedly connected with the fine adjustment bolt and are respectively positioned below the fine adjustment bolt.
8. The multi-stage cantilever type axial flow turbine locking tool according to claim 7,
the double-pre-tightening sleeve comprises two pre-tightening sleeve bodies; the two pre-tightening sleeve bodies are respectively and rotationally connected with the two stretching sleeve bodies and respectively coat the two stretching sleeve bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238603.3U CN215967329U (en) | 2021-09-15 | 2021-09-15 | Multistage cantilever type axial compressor turbine locking frock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238603.3U CN215967329U (en) | 2021-09-15 | 2021-09-15 | Multistage cantilever type axial compressor turbine locking frock |
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| CN215967329U true CN215967329U (en) | 2022-03-08 |
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| CN202122238603.3U Active CN215967329U (en) | 2021-09-15 | 2021-09-15 | Multistage cantilever type axial compressor turbine locking frock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695894A (en) * | 2021-09-15 | 2021-11-26 | 重庆江增船舶重工有限公司 | Multistage cantilever type axial compressor turbine locking frock |
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2021
- 2021-09-15 CN CN202122238603.3U patent/CN215967329U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695894A (en) * | 2021-09-15 | 2021-11-26 | 重庆江增船舶重工有限公司 | Multistage cantilever type axial compressor turbine locking frock |
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