CN113550797A - Steam turbine steam guide pipe flange sealing device - Google Patents
Steam turbine steam guide pipe flange sealing device Download PDFInfo
- Publication number
- CN113550797A CN113550797A CN202110901138.9A CN202110901138A CN113550797A CN 113550797 A CN113550797 A CN 113550797A CN 202110901138 A CN202110901138 A CN 202110901138A CN 113550797 A CN113550797 A CN 113550797A
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- China
- Prior art keywords
- clamp body
- clamping body
- diameter adjusting
- seal assembly
- clamping
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Clamps And Clips (AREA)
Abstract
The invention belongs to the technical field of plugging devices, and particularly relates to a steam turbine steam guide pipe flange sealing device which comprises an upper clamp body and a lower clamp body, wherein the upper clamp body and the lower clamp body are semi-annular, and are respectively provided with a glue injection groove and a connecting hole communicated with the glue injection groove; the upper clamping body is connected with the lower clamping body through a fixing bolt, two ends of the upper clamping body and two ends of the lower clamping body are respectively provided with a corresponding connecting lug, a hook body is fixed on the connecting lug of the upper clamping body, and the connecting lug of the lower clamping body can be supported through the hook body; and the upper clamping body and/or the lower clamping body are/is provided with an axial compression assembly. The hook body is arranged, and the connecting lug of the lower clamp body can be supported by the hook body, so that the integral combination can be conveniently realized by only one operator in the operation process; the axial compression assembly is arranged to prevent the whole body from shifting in the axial position.
Description
Technical Field
The invention belongs to the technical field of plugging devices, and particularly relates to a steam turbine steam guide pipe flange sealing device.
Background
Steam from the boiler flows through the main steam valve and the regulating valve and flows into the turbine cylinder through four steam inlet pipes connecting the regulating valve and the high pressure cylinder. The steam inlet pipe is connected to the cylinder by two steam inlet sleeves on the upper cylinder and two steam inlet sleeves on the lower cylinder. The upper half of the steam inlet pipe has a pair of flanges to allow maintenance personnel to remove the pair of flanges and then uncover the upper half of the cylinder. Each flange is composed of concave-convex flanges and is connected by bolts. It includes a wrap gasket for sealing the flange.
The upper half of the high-medium pressure cylinder can be uncovered after the steam guide pipe flange is disassembled in the overhaul of the steam turbine, and an overhaul worker can grind the air guide pipe flange and restore the sealing performance of the air guide pipe flange after replacing the sealing pad. The unit participates in spot transaction, the load fluctuation is large, the start and stop are frequent, the leakage risk of the steam turbine steam guide pipe flange is increased, the unit shutdown time is short, and the gas guide pipe flange is difficult to overhaul.
In the prior art, a related flange leakage stopping clamp is provided, and the clamp is fixed on the outer side of a flange to be blocked through a structure of a hoop, and then a glue injection valve and a glue injection gun are connected through a glue injection port on the clamp for glue injection blocking. Such a flange leak-stopping jig is disclosed in patent application No. 201220514616.7.
However, the structure basically realizes the sealing between the two flanges by contacting with the side surface (circumferential surface) of the flange to be blocked, and belongs to a radial fixing mode. It lacks corresponding fixed in axial direction, consequently can take place the displacement in axial direction in the use, especially when being linked together injecting glue rifle and anchor clamps. Meanwhile, the upper clamp body and the lower clamp body of the clamp are of two-part structures, so that certain inconvenience exists in the process of combination; sometimes two people are also required to work in concert to complete the assembly.
Disclosure of Invention
In view of the above technical problems, the present invention provides a steam turbine steam guide pipe flange sealing device, which is convenient to assemble and can be axially fixed.
In order to solve the technical problems, the invention adopts the technical scheme that:
a steam turbine steam guide pipe flange sealing device comprises an upper clamp body and a lower clamp body, wherein the upper clamp body and the lower clamp body are semi-annular, and both the upper clamp body and the lower clamp body are provided with glue injection grooves and connecting holes communicated with the glue injection grooves; the upper clamping body is connected with the lower clamping body through a fixing bolt, two ends of the upper clamping body and two ends of the lower clamping body are respectively provided with a corresponding connecting lug, a hook body is fixed on the connecting lug of the upper clamping body, and the connecting lug of the lower clamping body can be supported through the hook body; and the upper clamping body and/or the lower clamping body are/is provided with an axial compression assembly.
The axial compression assembly comprises a connecting shaft and two pressure plates, the two pressure plates are connected with the connecting shaft in a sliding manner, nuts are connected to two ends of the connecting shaft through uniform threads, and the pressure plates can be compressed through the nuts; the upper clamp body and/or the lower clamp body are/is provided with a bulge connected with the connecting shaft.
The connecting shaft is connected with the bulges in a sliding manner, and the bulges are provided with corresponding through holes.
The lower end of the pressing plate is provided with a convex block.
The diameter adjusting device also comprises two diameter adjusting rings, wherein the two diameter adjusting rings are oppositely arranged; the upper clamp body and the lower clamp body are clamped at the outer sides of the two diameter adjusting rings; the diameter adjusting ring comprises an upper semicircular ring and a lower semicircular ring, and the upper semicircular ring and the lower semicircular ring are connected to form a finished circular ring.
The both sides of going up the card body and lower card body all are equipped with the draw-in groove of being connected with the accent footpath ring.
The clamping groove is positioned outside two sides of the upper clamping body and the lower clamping body.
And a bolt clamping groove is formed in the end part of the hook body.
Compared with the prior art, the invention has the following beneficial effects:
the hook body is arranged, and the connecting lug of the lower clamp body can be supported by the hook body, so that the integral combination can be conveniently realized by only one operator in the operation process; the axial compression assembly is arranged to prevent the whole body from shifting in the axial position.
The diameter adjusting rings can be arranged to select diameter adjusting rings with different sizes according to flanges with different diameters, so that the leakage stopping operation of the flanges with different diameters is adapted.
Drawings
FIG. 1 is an isometric view of one aspect of the invention;
FIG. 2 is an isometric view of the invention in another orientation;
FIG. 3 is a schematic view of the present invention in use;
FIG. 4 is another schematic structural view of the present invention;
FIG. 5 is a schematic view of a card slot of the present invention;
FIG. 6 is a schematic view of the diameter adjusting ring of the present invention;
wherein: 1 is the last card body, 2 is the lower card body, 3 is the injecting glue recess, 4 is the connecting hole, 5 is fixing bolt, 6 is the engaging lug, 7 is the coupler body, 70 is the bolted connection draw-in groove, 8 is the axial compresses tightly the subassembly, 80 is the connecting axle, 81 is the clamp plate, 82 is the nut, 83 is the lug, 9 is the arch, 90 is the through-hole, 10 is the accent footpath ring, 100 is last semicircle ring, 101 is lower semicircle ring, 11 is the draw-in groove, 12 is for treating the shutoff flange.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, a steam turbine steam guide pipe flange sealing device comprises an upper clamp body 1 and a lower clamp body 2, wherein the upper clamp body 1 and the lower clamp body 2 are both semi-annular, and the upper clamp body 1 and the lower clamp body 2 are both provided with a glue injection groove 3 and a connecting hole 4 communicated with the glue injection groove 3; the upper clamp body 1 is connected with the lower clamp body 2 through a fixing bolt 5, two ends of the upper clamp body 1 and the lower clamp body 2 are respectively provided with a corresponding connecting lug 6, a hook body 7 is fixed on the connecting lug 6 of the upper clamp body 1, and the connecting lug 6 of the lower clamp body 2 can be supported through the hook body 7; the upper clamp body 1 and/or the lower clamp body 2 are/is provided with an axial compression assembly 8.
During the use, earlier arrange last card body 1 in the top of treating shutoff flange 12, lower card body 2 is arranged in the below of treating shutoff flange 12, go up card body 1 and lower card body 2 and control the dislocation, then with last card body 1 and lower card body 2 along axial relative motion for the engaging lug 6 at lower card body 2 both ends is taken on the coupler body 7 at last card body 1 both ends, can support (hold) lower card body 2 through coupler body 7 promptly, thereby realize going up card body 1 and last card body 1 and lower card body 2's temporary fixation.
Then, fixing bolts 5 penetrate into the connecting lugs 6 at the two ends of the upper clamping body 1 and the lower clamping body 2 for fastening, and at the moment, the upper clamping body 1 and the lower clamping body 2 can be clamped outside the flange 12 to be plugged; and then the axial compression assembly 8 compresses the end face of the flange 12 to be blocked, so that the axial deviation of the sealing device is prevented.
And finally, connecting a glue injection valve in the prior art with the connecting hole 4, connecting the glue injection valve with a glue injection gun, and injecting glue into the glue injection groove 3 and the flange to be plugged 12 through the glue injection gun through the glue injection valve, thereby realizing plugging.
Further, the axial compresses tightly subassembly 8 and can adopt multiple structure to realize, no matter what kind of structure adopts, as long as can realize axial fixity can, the preferred following structure that adopts:
the axial pressing assembly 8 comprises a connecting shaft 80 and two pressing plates 81, the two pressing plates 81 are connected with the connecting shaft 80 in a sliding mode, nuts 82 are connected to two ends of the connecting shaft 80 through threads, and one pressing plate 81 can be pressed through one nut 82; the upper clamp body 1 and/or the lower clamp body 2 are/is provided with a bulge 9 connected with the connecting shaft 80.
When the flange is fixed, the two pressing plates 81 are respectively positioned at the two sides of the flange 12 to be blocked and the upper clamping body 1 and the lower clamping body 2; then, by screwing the two nuts 82, the two nuts 82 respectively press the pressing plate 81; the two pressing plates 81 clamp the two end faces of the flange 12 to be plugged under the action of the corresponding nuts 82, so as to realize axial fixation.
Further, the connecting shaft 80 may be fixedly connected with the protrusion 9, but preferably, the connecting shaft 80 is slidably connected with the protrusion 9, and the protrusion 9 is provided with a corresponding through hole 90.
Thus, during fixing, only one of the nuts 82 needs to be screwed to drive the two pressing plates 81 to move relatively, so as to clamp the two end faces of the flange 12 to be plugged.
Further, in order to achieve better axial fixation, the lower end of the pressing plate 81 is provided with a projection 83, and the projection 83 can contact with two end faces of the flange 12 to be plugged.
Further, the inner diameters of the upper clamping body 1 and the lower clamping body 2 are fixed, which can only be suitable for sealing flanges with the same size, but cannot be used for flanges with different specifications, so that:
as shown in fig. 4 to 6, the device further comprises two diameter adjusting rings 10, wherein the two diameter adjusting rings 10 are arranged oppositely; the upper clamp body 1 and the lower clamp body 2 are clamped outside the two diameter adjusting rings 10; the diameter-adjusting ring 10 comprises an upper semicircular ring 100 and a lower semicircular ring 101, and the upper semicircular ring 100 and the lower semicircular ring are connected to form a finished circular ring.
The inner diameters of the upper clamp body 1 and the lower clamp body 2 can be reduced through the diameter adjusting ring 10, and the diameter adjusting ring 10 surrounds the outer side of the flange 12 to be plugged; namely, the arrangement of the diameter adjusting ring 10 is equivalent to increase the outer diameter of the flange 12 to be blocked, so that the outer diameter can be matched with the inner diameters of the upper clamping body 1 and the lower clamping body 2.
When in use, the two upper semicircular rings 100 are placed at two sides of the upper clamping body 1, and the two lower semicircular rings 101 are placed at two sides of the lower clamping body 2; and then the whole assembly is carried out according to the method.
The diameter adjusting ring 10 with various specifications can be arranged, so that the plugging operation of flanges with various sizes can be met.
Further, although the above-mentioned diameter adjusting ring 10 can be adapted to different sizes of flanges, it lacks a corresponding fixation with the upper and lower clamping bodies 1 and 2, and therefore needs to be held by hand when being assembled, and is inconvenient to operate, and therefore:
Further, the position of the card slot 11 is preferably fixed to the outside of both sides of the upper and lower card bodies 1 and 2.
Further, a bolt slot 70 is fixed at the end of the hook 70, and a nut of the fixing bolt 5 can be placed in the bolt slot 70, so that only the upper part of the fixing bolt 5 needs to be screwed when fastening.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (8)
1. A steam turbine steam guide pipe flange sealing device comprises an upper clamp body (1) and a lower clamp body (2), wherein the upper clamp body (1) and the lower clamp body (2) are both semi-annular, and the upper clamp body (1) and the lower clamp body (2) are both provided with an adhesive injection groove (3) and a connecting hole (4) communicated with the adhesive injection groove (3); go up and be connected through fixing bolt (5) between the card body (1) and the lower card body (2), go up the both ends of the card body (1) and the lower card body (2) and all be equipped with corresponding engaging lug (6), its characterized in that: a hook body (7) is fixed on the connecting lug (6) of the upper clamping body (1), and the connecting lug (6) of the lower clamping body (2) can be supported through the hook body (7); and the upper clamping body (1) and/or the lower clamping body (2) are/is provided with an axial pressing assembly (8).
2. The turbine nozzle flange seal assembly of claim 1, wherein: the axial pressing assembly (8) comprises a connecting shaft (80) and two pressing plates (81), the two pressing plates (81) are connected with the connecting shaft (80) in a sliding mode, nuts (82) are connected to the two ends of the connecting shaft (80) through threads, and the pressing plates (81) can be pressed through the nuts (82); the upper clamp body (1) and/or the lower clamp body (2) are/is provided with a bulge (9) connected with the connecting shaft (80).
3. The turbine nozzle flange seal assembly of claim 2, wherein: the connecting shaft (80) is connected with the bulge (9) in a sliding mode, and the bulge (9) is provided with a corresponding through hole (90).
4. The turbine nozzle flange seal assembly of claim 2, wherein: the lower end of the pressing plate (81) is provided with a convex block (83).
5. The turbine nozzle flange seal assembly of claim 1, wherein: the diameter adjusting device is characterized by further comprising two diameter adjusting rings (10), wherein the two diameter adjusting rings (10) are arranged oppositely; the upper clamp body (1) and the lower clamp body (2) are clamped at the outer sides of the two diameter adjusting rings (10); the diameter adjusting ring (10) comprises an upper semi-circular ring (100) and a lower semi-circular ring (101), and the upper semi-circular ring (100) and the lower semi-circular ring are connected to form a finished circular ring.
6. The turbine nozzle flange seal assembly of claim 5, wherein: the two sides of the upper clamp body (1) and the lower clamp body (2) are respectively provided with a clamping groove (11) connected with the diameter adjusting ring (10).
7. The turbine nozzle flange seal assembly of claim 6, wherein: the clamping groove (11) is positioned outside two sides of the upper clamping body (1) and the lower clamping body (2).
8. The turbine nozzle flange seal assembly of claim 1, wherein: and a bolt clamping groove (70) is formed in the end part of the hook body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901138.9A CN113550797A (en) | 2021-08-06 | 2021-08-06 | Steam turbine steam guide pipe flange sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901138.9A CN113550797A (en) | 2021-08-06 | 2021-08-06 | Steam turbine steam guide pipe flange sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113550797A true CN113550797A (en) | 2021-10-26 |
Family
ID=78105445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110901138.9A Withdrawn CN113550797A (en) | 2021-08-06 | 2021-08-06 | Steam turbine steam guide pipe flange sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113550797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542195A (en) * | 2022-03-09 | 2022-05-27 | 中国船舶重工集团公司第七0三研究所 | Reversing air cylinder air inlet pipe structure of marine steam turbine |
-
2021
- 2021-08-06 CN CN202110901138.9A patent/CN113550797A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542195A (en) * | 2022-03-09 | 2022-05-27 | 中国船舶重工集团公司第七0三研究所 | Reversing air cylinder air inlet pipe structure of marine steam turbine |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211026 |