CN210599924U - Coupling for steam turbine - Google Patents
Coupling for steam turbine Download PDFInfo
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- CN210599924U CN210599924U CN201921457445.7U CN201921457445U CN210599924U CN 210599924 U CN210599924 U CN 210599924U CN 201921457445 U CN201921457445 U CN 201921457445U CN 210599924 U CN210599924 U CN 210599924U
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- coupling
- unloading
- half coupling
- processed
- end half
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Abstract
A shaft coupling for a steam turbine relates to the technical field of rotating parts and specifically comprises a left-end half coupling and a right-end half coupling, wherein the left-end half coupling and the right-end half coupling are arranged oppositely; a group of hydraulic unloading devices are respectively arranged at the left end and the right end of the left occlusion fixed block, and unloading grooves are arranged on the end surfaces of the right occlusion fixed block and the left occlusion fixed block, which correspond to each other; the utility model discloses an at left end half-coupling and right-hand member half-coupling cooperation installation, set up left interlock fixed block and right interlock fixed block in the part of butt joint simultaneously to set up hydraulic pressure on the contact terminal surface of left interlock fixed block and unload the load device, at the steam turbine during operation, with the big output of output shaft you moment of torsion uninstallation partly, guarantee the working life of shaft coupling.
Description
Technical Field
The utility model relates to a shaft connecting piece technical field especially relates to a shaft coupling for steam turbine.
Background
The coupling is a device which connects two shafts or a shaft and a rotating part, rotates together in the process of transmitting motion and power and does not separate under normal conditions; and also as a safety device to prevent the coupled machine parts from bearing excessive load, thereby playing the role of overload protection.
The output shaft of the steam turbine has large torque, if the general coupling only plays a role of connecting two shafts, the general coupling can bear too large load to cause the service life of the coupling to be short, and once the coupling is damaged, the whole steam turbine driving system is directly influenced.
Disclosure of Invention
The utility model overcomes above-mentioned prior art's is not enough, provides a shaft coupling for steam turbine. The utility model discloses a at left end half-coupling and right-hand member half-coupling cooperation installation, set up left interlock fixed block and right interlock fixed block in the part of butt joint simultaneously to set up hydraulic pressure on the contact surface of left interlock fixed block and unload the load device, at the steam turbine during operation, partly with the big output torque uninstallation of output shaft, guarantee the working life of shaft coupling.
The technical scheme of the utility model:
a shaft coupling for a steam turbine comprises a left-end half coupling and a right-end half coupling, wherein the left-end half coupling and the right-end half coupling are oppositely arranged, a first shaft mounting hole is formed in the blocking processing of the left-end half coupling, a second shaft mounting hole is formed in the right-end of the right-end half coupling, the first shaft mounting hole is respectively communicated with four groups of first positioning threaded holes, the first positioning threaded holes are circumferentially and equidistantly processed on the left-end half coupling, the second shaft mounting holes are respectively communicated with four groups of second positioning threaded holes, the second positioning threaded holes are circumferentially and equidistantly processed on the right-end half coupling, a plurality of groups of left meshing fixed blocks are circumferentially and equidistantly processed on the right end surface of the left-end half coupling, and the right meshing fixed blocks matched with the left meshing fixed blocks are circumferentially and equidistantly processed on the left end surface of the right-end half coupling, the left occlusion fixing block and the right occlusion fixing block are in cross occlusion connection; a group of hydraulic unloading devices are respectively arranged at the left end and the right end of the left occlusion fixed block, and unloading grooves are formed in the end surfaces of the right occlusion fixed block and the left occlusion fixed block, which correspond to each other;
a matching groove hole is further processed on the right end face of the left end half coupling, a matching positioning column matched with the matching groove hole is processed on the left end face of the right end half coupling, meshing teeth are circumferentially processed on the outer end face of the matching positioning column, and meshing tooth grooves matched with the meshing teeth are processed on the inner end face of the matching groove hole;
a certain gap is formed between the meshing teeth and the meshing tooth grooves; when the coupler works, the meshing teeth cannot directly apply load to the side end face of the matched tooth groove, certain buffering time is provided, and damage caused by overlarge reaction force of the meshing teeth after direct contact is avoided.
Furthermore, the hydraulic load unloading device comprises a hydraulic oil tank, the hydraulic oil tank is a Y-shaped hydraulic oil tank, unloading hydraulic oil is filled in the hydraulic oil tank, a group of unloading pistons are arranged in the vertical ends of the hydraulic oil tank, one ends of the unloading pistons are fixedly connected with a group of unloading load columns, the end parts of the unloading load columns are matched with the unloading load grooves, reset pistons are respectively arranged in two groups of inclined ends of the hydraulic oil tank, limit columns are respectively arranged at the lower ends of the reset pistons, the lower ends of the reset pistons are also fixedly connected with the bottoms of the inclined ends of the Y-shaped hydraulic oil tank through reset springs, and the reset springs are arranged at the outer ends of the limit columns;
the output shaft of the steam turbine is started, the output shaft drives the right coupler to rotate, the right coupler rotates, the right meshing fixed block is in contact with the left meshing fixed block, the load unloading column is pressed, the unloading load drives the unloading piston to move downwards, hydraulic oil is pressed inwards, the two inclined ends are driven to be provided with the downward pressing of the reset pistons respectively, and the load is output to the reset spring; and meanwhile, the limiting columns are arranged, so that the reset spring always works in the working limit, and the short service life caused by the long-time working state in the limit can be avoided.
Furthermore, two ends of the unloading piston are respectively provided with two groups of unloading sealing grooves, and unloading sealing rings are arranged in the unloading sealing grooves; two groups of sealing rings are arranged to ensure the sealing performance of the hydraulic oil, and the unloading device does not lose function due to oil leakage.
Furthermore, two groups of reset sealing grooves are respectively processed at two ends of the reset piston, and reset sealing rings are arranged in the reset sealing grooves; two groups of sealing rings are arranged to ensure the sealing performance of the hydraulic oil, and the unloading device does not lose function due to oil leakage.
Further, be provided with a set of holding ring on left end half-coupling and the right-hand member half-coupling respectively, be left holding ring and right holding ring respectively, the equidistant processing in circumference has four left fixed screw holes of group on the holding ring of a left side, and is provided with a set of fixed waist type slotted hole between per two sets of left fixed screw holes, the equidistant processing in circumference has eight right fixed screw holes of group on the holding ring of the right side, a left side holding ring with right side holding ring is through eight stud and fixation nut fixed connection of group.
The utility model discloses following beneficial effect has for prior art:
the utility model has the advantages that the left end half coupling and the right end half coupling are installed in a matching way, the butt joint part is provided with the left occlusion fixed block and the right occlusion fixed block, the contact end surface of the left occlusion fixed block is provided with the hydraulic unloading device, when the steam turbine works, a part of the large output torque of the output shaft is unloaded, and the service life of the coupling is ensured;
the utility model discloses left end half-coupling and right-hand member half-coupling cooperation installation pass through the holding ring location connection, and in the positioning process, processing has the convenient fixed connection in the fixed waist type groove of four groups on the left side holding ring, in the installation, avoids the unable completion location of clearance undersize, and through four group's complex fixed screw holes again, guarantee that the connection of shaft coupling is fixed the back and guarantee coaxially, guarantee that steam turbine output shaft output is stable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the hydraulic unloading device of the present invention;
fig. 3 is a side view of the left end coupling half of the present invention;
fig. 4 is a side view of the right end coupling half of the present invention;
FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 4;
fig. 6 is a front view of the left positioning ring of the present invention;
fig. 7 is a front view of the right positioning ring of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1-7, the coupling for a steam turbine disclosed in this embodiment includes a left-end half coupling 1 and a right-end half coupling 2, the left-end half coupling 1 and the right-end half coupling 2 are disposed oppositely, the left-end half coupling 1 is provided with a first shaft mounting hole 1-1 by blocking processing, the right-end of the right-end half coupling 2 is provided with a second shaft mounting hole 2-1 by processing, the first shaft mounting hole 1-1 is respectively communicated with four sets of first positioning threaded holes 1-2, the first positioning threaded holes 1-2 are circumferentially processed on the left-end half coupling 1 at equal intervals, the second shaft mounting hole 2-1 is also respectively communicated with four sets of second positioning threaded holes 2-2, the second positioning threaded holes 2-2 are circumferentially processed on the right-end half coupling 2 at equal intervals, a plurality of groups of left meshing fixed blocks 1-3 are processed on the right end face of the left end half coupling 1 at equal intervals in the circumferential direction, right meshing fixed blocks 2-3 matched with the left meshing fixed blocks 1-3 are processed on the left end face of the right end half coupling 2 at equal intervals in the circumferential direction, and the left meshing fixed blocks 1-3 are in cross meshing connection with the right meshing fixed blocks 2-3; the left end and the right end of the left occlusion fixing block 1-3 are respectively provided with a group of hydraulic load unloading devices 3, and the end surfaces of the right occlusion fixing block 2-3 corresponding to the left occlusion fixing block 1-3 are provided with load unloading grooves 4;
a matching slotted hole 1-4 is further processed on the right end face of the left end half coupling 1, a matching positioning column 2-4 matched with the matching slotted hole 1-4 is processed on the left end face of the right end half coupling 2, meshing teeth 2-5 are circumferentially processed on the outer end face of the matching positioning column 2-4, and meshing tooth grooves 1-5 matched with the meshing teeth 2-5 are processed on the inner end face of the matching slotted hole 1-4;
a certain gap is reserved between the meshing teeth 2-5 and the meshing tooth grooves 1-5.
Specifically, the hydraulic load unloading device 3 comprises a hydraulic oil tank 3-1, the hydraulic oil tank 3-1 is a Y-shaped hydraulic oil tank, unloading hydraulic oil is filled in the hydraulic oil tank 3-1, a group of unloading pistons 3-2 are arranged in the vertical end of the hydraulic oil tank 3-1, one end of each unloading piston 3-2 is fixedly connected with a group of unloading load columns 3-3, the end parts of the unloading load columns 3-3 are matched with the unloading groove 4, reset pistons 3-4 are respectively arranged in two groups of inclined ends of the hydraulic oil tank 3-1, the lower ends of the reset pistons 3-4 are respectively provided with limiting columns 3-5, the lower ends of the reset pistons 3-4 are also fixedly connected with the bottoms of the inclined ends of the Y-shaped hydraulic oil tank 3-1 through reset springs 3-6, the reset spring 3-6 is arranged at the outer end of the limit column 3-5.
Specifically, two ends of the unloading piston 3-2 are respectively provided with two unloading sealing grooves, and unloading sealing rings are arranged in the unloading sealing grooves.
Specifically, two groups of reset sealing grooves are respectively processed at two ends of the reset pistons 3-4, and reset sealing rings are arranged in the reset sealing grooves.
Specifically, a set of positioning rings 5 are respectively arranged on the left end half-coupling 1 and the right end half-coupling 2 and respectively comprise a left positioning ring 5-1 and a right positioning ring 5-2, four sets of left fixing threaded holes 5-1-1 are formed in the left positioning ring 5-1 in a circumferential equidistant mode, a set of fixing waist-shaped slotted holes 5-1-2 are arranged between every two sets of left fixing threaded holes 5-1-1, eight sets of right fixing threaded holes 5-2-1 are formed in the right positioning ring 5-2 in a circumferential equidistant mode, and the left positioning ring 5-1 and the right positioning ring 5-2 are fixedly connected through eight sets of stud bolts 5-3 and fixing nuts 5-4.
The above embodiments are merely illustrative of the present patent and do not limit the scope of the patent, and those skilled in the art can make modifications to the parts thereof without departing from the spirit and scope of the patent.
Claims (5)
1. A shaft coupling for a steam turbine comprises a left-end half coupling (1) and a right-end half coupling (2), and is characterized in that the left-end half coupling (1) and the right-end half coupling (2) are oppositely arranged, a first shaft mounting hole (1-1) is processed at the left end of the left-end half coupling (1), a second shaft mounting hole (2-1) is processed at the right end of the right-end half coupling (2), the first shaft mounting hole (1-1) is respectively communicated with four groups of first positioning threaded holes (1-2), the first positioning threaded holes (1-2) are processed on the left-end half coupling (1) at equal intervals in the circumferential direction, the second shaft mounting hole (2-1) is also respectively communicated with four groups of second positioning threaded holes (2-2), the second positioning threaded holes (2-2) are processed on the right-end half coupling (2) at equal intervals in the circumferential direction, a plurality of groups of left meshing fixed blocks (1-3) are processed on the right end face of the left end half coupling (1) at equal intervals in the circumferential direction, right meshing fixed blocks (2-3) matched with the left meshing fixed blocks (1-3) are processed on the left end face of the right end half coupling (2) at equal intervals in the circumferential direction, and the left meshing fixed blocks (1-3) are in cross meshing connection with the right meshing fixed blocks (2-3); the left end and the right end of the left occlusion fixing block (1-3) are respectively provided with a group of hydraulic load unloading devices (3), and the end surfaces of the right occlusion fixing block (2-3) and the left occlusion fixing block (1-3) corresponding to each other are provided with load unloading grooves (4);
a matching slotted hole (1-4) is further processed on the right end face of the left end half coupling (1), a matching positioning column (2-4) matched with the matching slotted hole (1-4) is processed on the left end face of the right end half coupling (2), meshing teeth (2-5) are circumferentially processed on the outer end face of the matching positioning column (2-4), and meshing tooth grooves (1-5) matched with the meshing teeth (2-5) are processed on the inner side end face of the matching slotted hole (1-4);
a certain gap is formed between the meshing teeth (2-5) and the meshing tooth grooves (1-5).
2. The shaft coupling for the steam turbine according to claim 1, wherein the hydraulic load unloading device (3) comprises a hydraulic oil tank (3-1), the hydraulic oil tank (3-1) is a Y-shaped hydraulic oil tank, the hydraulic oil tank (3-1) is filled with unloading hydraulic oil, a group of unloading pistons (3-2) is arranged in the vertical end of the hydraulic oil tank (3-1), one end of each unloading piston (3-2) is fixedly connected with a group of unloading load columns (3-3), the end parts of the unloading load columns (3-3) are matched with the unloading load grooves (4), reset pistons (3-4) are respectively arranged in two groups of inclined ends of the hydraulic oil tank (3-1), the lower ends of the reset pistons (3-4) are respectively provided with limit columns (3-5), the lower end of the reset piston (3-4) is fixedly connected with the bottom of the inclined end of the Y-shaped hydraulic oil tank (3-1) through a reset spring (3-6), and the reset spring (3-6) is arranged at the outer end of the limiting column (3-5).
3. The coupling for the steam turbine as claimed in claim 2, wherein two unloading seal grooves are respectively machined at two ends of the unloading piston (3-2), and unloading seal rings are arranged in the unloading seal grooves.
4. The coupling for the steam turbine as claimed in claim 2, wherein two sets of reset seal grooves are respectively machined at two ends of the reset pistons (3-4), and reset seal rings are arranged in the reset seal grooves.
5. The coupling for steam turbines according to claim 1, wherein a set of positioning rings (5) are respectively arranged on the left end half coupling (1) and the right end half coupling (2), respectively a left positioning ring (5-1) and a right positioning ring (5-2), four groups of left fixing threaded holes (5-1-1) are machined in the left positioning ring (5-1) at equal intervals in the circumferential direction, and a group of fixed waist-shaped slotted holes (5-1-2) are arranged between every two groups of left fixed threaded holes (5-1-1), eight groups of right fixing threaded holes (5-2-1) are machined in the right positioning ring (5-2) at equal intervals in the circumferential direction, the left positioning ring (5-1) and the right positioning ring (5-2) are fixedly connected through eight groups of stud bolts (5-3) and fixing nuts (5-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921457445.7U CN210599924U (en) | 2019-09-04 | 2019-09-04 | Coupling for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921457445.7U CN210599924U (en) | 2019-09-04 | 2019-09-04 | Coupling for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210599924U true CN210599924U (en) | 2020-05-22 |
Family
ID=70697121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921457445.7U Active CN210599924U (en) | 2019-09-04 | 2019-09-04 | Coupling for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210599924U (en) |
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2019
- 2019-09-04 CN CN201921457445.7U patent/CN210599924U/en active Active
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