CN213980881U - Embedded nozzle group of steam turbine - Google Patents
Embedded nozzle group of steam turbine Download PDFInfo
- Publication number
- CN213980881U CN213980881U CN202022882416.4U CN202022882416U CN213980881U CN 213980881 U CN213980881 U CN 213980881U CN 202022882416 U CN202022882416 U CN 202022882416U CN 213980881 U CN213980881 U CN 213980881U
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- China
- Prior art keywords
- bolt
- cylinder
- steam turbine
- embedded
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 229920001973 fluoroelastomer Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000000994 depressogenic effect Effects 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses an embedded nozzle group of steam turbine, the steam cylinder comprises a cylinder, cylinder air inlet department sets up indent annular joint and installs the convex nozzle piece, convex nozzle piece overcoat has cup jointed the outer loop gland, the outer loop gland passes through the bolt fastening in the cylinder, the inboard surface in bolt hole department outer end of outer loop gland is seted up and has been had the depressed groove, the pressure spring has been placed in the depressed groove, the reverse outside extrusion bolt of pressure spring through adopting embedded assembly structure, can form the internal break and seal, improves sealing performance to behind the bolt locking, the outside extrusion bolt of built-in pressure spring can produce the effort to the bolt, and the difficult bolt sliding wire that makes is not hard up.
Description
Technical Field
The utility model relates to a steam turbine nozzle field, more specifically say, relate to an embedded nozzle group of steam turbine.
Background
The steam turbine is relatively precise heavy mechanical equipment which works under the conditions of high temperature, high pressure and high rotating speed, wherein a nozzle group is one of core components which work in a high-temperature and high-pressure environment;
the connection and the placing of the nozzle group and the cylinder are also stricter, the nozzle group of the steam turbine in the prior art is poor in sealing performance when being connected with the cylinder, air leakage is easy to occur in long-term use, the nozzle group is installed through bolts during assembly, the locking firmness is unreliable after the bolts are installed, and the phenomenon of thread slipping may occur in long-term use.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide an embedded nozzle group of steam turbine through adopting embedded assembly structure, can form the internal block sealed, improves sealing performance to behind the bolt locking, the outside extrusion bolt of built-in pressure spring can produce the effort to the bolt, and the difficult smooth silk of messenger's bolt is not hard up.
In order to solve the above problems, the utility model adopts the following technical proposal.
The utility model provides an embedded nozzle group of steam turbine, includes the cylinder, cylinder air inlet department sets up indent annular joint and installs convex nozzle piece, convex nozzle piece overcoat has cup jointed the outer loop gland, the outer loop gland passes through the bolt fastening in the cylinder, the inboard surface in bolt hole department outer end of outer loop gland is seted up and has been had the sunken groove, the pressure spring has been placed in the sunken groove, the reverse outside extrusion bolt of pressure spring through adopting embedded assembly structure, can form internal shutoff and seal, improves sealing performance to behind the bolt locking, the outside extrusion bolt of built-in pressure spring can produce the effort to the bolt, is difficult for making the bolt slide silk not hard up.
Furthermore, the bolt adopts hexagon socket head cap screw, and its embedded installation is on outer ring gland surface, and the surface is protruding, the installation of being convenient for.
Furthermore, a ring groove is formed in the convex ring of the convex nozzle block and the inner side surface of the cylinder, and a rubber ring is clamped in the ring groove, so that the sealing performance is improved.
Furthermore, the rubber ring is made of high-temperature-resistant fluororubber and has good high-temperature resistance.
Furthermore, the ring-sinking groove adopts a reducing ring groove structure, the outer side groove is wider, the assembly of a pressure spring is convenient, and the compression spring cannot be obstructed by the surface of the inner wall during compression and can freely contract.
Compared with the prior art, the utility model has the advantages of:
(1) through adopting embedded assembly structure, can form internal blocking sealed, improve sealing performance to after the bolt locking, the built-in pressure spring outwards extrudees the bolt, can produce the effort to the bolt, and difficult messenger's bolt smooth silk is not hard up.
(2) The bolt adopts the hexagon socket head cap screw, and its embedded installation is on outer loop gland surface, and the surface is protruding, the installation of being convenient for.
(3) The convex ring of the convex nozzle block and the inner side surface of the cylinder are provided with ring grooves, and rubber rings are clamped in the ring grooves, so that the sealing performance is improved.
(4) The rubber ring is made of high-temperature-resistant fluororubber and has good high-temperature resistance.
(5) The annular groove adopts a reducing annular groove structure, the outer side groove is wider, the assembly of a pressure spring is facilitated, and the annular groove cannot be obstructed by the surface of the inner wall during compression and can be freely contracted.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a side view of the partial structure of the convex nozzle block of the present invention.
The reference numbers in the figures illustrate:
the device comprises a cylinder 1, a convex nozzle block 2, an outer ring gland 3, a bolt 4, an annular groove 5, a pressure spring 6, a rubber ring 12 and an annular groove 120.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, an embedded nozzle set of a steam turbine includes a cylinder 1, an air inlet of the cylinder 1 is provided with an inner concave ring groove to clamp and mount a convex nozzle block 2, the convex nozzle block 2 is sleeved with an outer ring gland 3, the outer ring gland 3 is fixed in the cylinder 1 through a bolt 4, an inner side surface of an outer end of the bolt hole of the outer ring gland 3 is provided with a ring groove 5, a pressure spring 6 is placed in the ring groove 5, and the bolt 4 is reversely and outwardly pressed by the pressure spring 6.
Referring to fig. 1-2, the bolt 4 is a hexagon socket head cap bolt, which is embedded in the surface of the outer ring gland 3, the surface is raised, and the installation is convenient, the convex ring of the convex nozzle block 2 and the inner side surface of the cylinder 1 are provided with the ring groove 120, the rubber ring 12 is clamped in the ring groove 120, the sealing performance is improved, the rubber ring 12 is made of high temperature resistant fluororubber, the high temperature resistance is good, the ring recess groove 5 is of a reducing ring groove structure, the outer side groove is wider, the assembly of the pressure spring 6 is convenient, and the compression is free from the obstruction of the inner wall surface during the compression and can be freely contracted.
An air inlet of the cylinder 1 is provided with an inwards concave ring groove which is clamped and installed with a convex nozzle block 2, an outer ring gland 3 is sleeved outside the convex nozzle block 2, the outer ring gland 3 is fixed in the cylinder 1 through a bolt 4 and is assembled in an embedded mode to form a fracture blocking opening seal, a ring groove 120 is formed in the convex ring position of the convex nozzle block 2 and the inner side surface of the cylinder 1, a rubber ring 12 is clamped and connected in the ring groove 120, and the sealing performance is improved;
meanwhile, an annular groove 5 is formed in the inner side surface of the outer end of the bolt hole of the outer ring gland 3, a pressure spring 6 is placed in the annular groove 5, and after the bolt 4 is locked, the pressure spring 6 can be compressed, so that the bolt 4 can be extruded outwards in the reverse direction by the pressure spring 6, an acting force can be generated on the bolt 4, and the bolt 4 is not easy to rotate and slide.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022882416.4U CN213980881U (en) | 2020-12-05 | 2020-12-05 | Embedded nozzle group of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022882416.4U CN213980881U (en) | 2020-12-05 | 2020-12-05 | Embedded nozzle group of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980881U true CN213980881U (en) | 2021-08-17 |
Family
ID=77239803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022882416.4U Expired - Fee Related CN213980881U (en) | 2020-12-05 | 2020-12-05 | Embedded nozzle group of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980881U (en) |
-
2020
- 2020-12-05 CN CN202022882416.4U patent/CN213980881U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210817 |