CN219933144U - Split type sealing ring for ultrahigh pressure steam vent valve - Google Patents
Split type sealing ring for ultrahigh pressure steam vent valve Download PDFInfo
- Publication number
- CN219933144U CN219933144U CN202321561486.7U CN202321561486U CN219933144U CN 219933144 U CN219933144 U CN 219933144U CN 202321561486 U CN202321561486 U CN 202321561486U CN 219933144 U CN219933144 U CN 219933144U
- Authority
- CN
- China
- Prior art keywords
- sealing
- sealing ring
- positioning
- ring
- rings
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 201
- 238000009434 installation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a split sealing ring for an ultrahigh pressure steam vent valve, which relates to the field of sealing ring structures and comprises at least two sealing rings, wherein all the sealing rings are coaxially arranged and the end surfaces are attached; the sealing ring consists of a plurality of sealing sheets, gaps exist between adjacent sealing sheets on the same sealing ring, and the gaps on the adjacent sealing rings are staggered. The utility model not only can realize quick installation and disassembly, but also can ensure that the sealing ring has a heated expansion space, so that the sealing ring cannot be influenced by expansion stress because of incapability of expanding after being heated, the sealing effect of the sealing piece is ensured, and the service life of the sealing piece is prolonged.
Description
Technical Field
The utility model relates to the field of sealing ring structures, in particular to a split sealing ring for an ultrahigh pressure steam vent valve.
Background
The steam vent valve is a valve for discharging pressurized steam in a non-working state or an emergency state, avoiding accidents and being generally used for emergency pressure relief protection during safe parking or driving. The seal ring is an annular seal member that prevents leakage of fluid or solid particles from between adjacent bonding surfaces and intrusion of foreign substances such as dust and moisture into the valve interior.
In the using process of the ultrahigh-pressure steam vent valve, the following problems of the sealing ring are found:
1. because the sealing ring of the ultrahigh-pressure steam vent valve is in a closed environment with high temperature and high pressure for a long time, the sealing ring can be heated and expanded along with the rise of the ambient temperature, but because of no expansion space, the service life of the sealing ring is shortened, frequent replacement is needed, and the production efficiency is affected; the sealing ring is cracked and damaged due to expansion stress in severe cases, so that the sealing effect is affected;
2. because of the installation position and the installation mode of the ultrahigh-pressure steam vent valve, the disassembly and the replacement of the sealing ring are time-consuming and labor-consuming, and the common integral sealing ring cannot meet the requirement of quick disassembly and assembly.
Therefore, how to reduce the influence of thermal expansion on the sealing ring and how to facilitate the disassembly and assembly of the sealing ring are technical problems to be solved in the field.
Disclosure of Invention
The utility model aims at: to the problem that exists, provide a split type sealing ring for superhigh pressure steam vent valve, not only can realize quick installation and dismantlement, can also make the sealing ring have the thermal expansion space, make it can not receive the expansion stress influence because unable inflation after being heated, guaranteed the sealed effect of sealing member, prolonged its life.
The technical scheme adopted by the utility model is as follows: the split sealing ring for the ultrahigh pressure steam vent valve comprises at least two sealing rings, wherein all the sealing rings are coaxially arranged and the end surfaces are attached; the sealing ring consists of a plurality of sealing sheets, gaps exist between adjacent sealing sheets on the same sealing ring, and the gaps on the adjacent sealing rings are staggered.
Further, the sealing ring consists of two sealing sheets.
Further, all sealing sheets making up the sealing ring have the same geometry and geometry.
Further, at least two sealing rings comprise a top sealing ring, a plurality of middle sealing rings and a bottom sealing ring.
Further, each sealing piece on the sealing ring is provided with a positioning structure for positioning connection with the adjacent sealing ring.
Further, the positioning structure is a positioning hole and a positioning protrusion for being assembled in the positioning hole.
Further, the positioning hole is a countersunk hole.
Further, a gap exists between the outer wall of the positioning protrusion and the inner wall of the positioning hole.
Further, a positioning hole or/and a positioning protrusion is/are arranged on the inner end surface of the top sealing ring; positioning holes or/and positioning protrusions are respectively formed on the inner end face and the outer end face of the middle sealing ring; and a positioning hole or/and a positioning protrusion is/are arranged on the inner end surface of the bottom sealing ring.
Further, the positioning structures are uniformly arranged along the circumferential direction of the sealing ring.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. the utility model is composed of at least two sealing rings, and each sealing ring is composed of a plurality of sealing sheets, so that the sealing rings can be quickly assembled and disassembled;
2. according to the utility model, gaps exist between adjacent sealing sheets, so that the sealing ring is expanded in a sealed space by heating and has an expandable space, thereby avoiding the self-cracking damage of the sealing ring due to expansion stress, ensuring the sealing effect of the sealing piece and prolonging the service life of the sealing piece;
3. according to the utility model, gaps are arranged between the sealing sheets on the adjacent sealing rings in a staggered manner, so that a labyrinth-like sealing structure is formed between the sealing rings, the sealing sheets on the sealing rings seal the gaps on the adjacent sealing rings, leakage at the gaps is prevented, and the stability of sealing performance is ensured.
Drawings
The utility model will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the mounting structure of the present utility model;
FIG. 2 is a schematic view of a top seal ring according to the present disclosure;
FIG. 3 is a schematic view of a middle seal ring structure according to the present disclosure;
FIG. 4 is a schematic view of a bottom seal ring according to the present utility model
The marks in the figure: 1-a top seal ring; 2-a middle sealing ring; 3-a bottom sealing ring; 4-positioning holes; 4-positioning protrusions; 6-sealing sheets.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
As shown in fig. 1-4, the split sealing ring for the ultrahigh pressure steam vent valve comprises at least two sealing rings, wherein all the sealing rings are sleeved on a valve body main shaft, the inner diameter of each sealing ring is matched with the outer diameter of the valve body main shaft, and all the sealing rings are coaxially arranged and the end surfaces are attached to each other; the sealing ring consists of a plurality of sealing sheets 6, and when the sealing sheets 6 are manufactured, the complete sealing ring can be cut along the radial direction; there is a gap between adjacent sealing sheets 6 on the same sealing ring, the gap can be generated by cutting the sealing sheets 6, in particular, material is lost when the sealing sheets 6 are manufactured, the lost material generates a gap between the adjacent sealing sheets 6, the gaps on the adjacent sealing sheets are staggered with each other, namely, along the axis direction, the adjacent sealing sheets are called a first sealing ring and a second sealing ring, and the gap between the sealing sheets 6 on the first sealing ring faces the sealing sheets 6 on the second sealing ring, namely, the gap is blocked by the sealing sheets 6.
In this embodiment, the sealing ring comprises two at least sealing rings to every sealing ring comprises a plurality of sealing pieces 6, and when the installation, the sealing piece can be installed from the side of valve body main shaft, then the sealing piece on same sealing washer makes up, can make the sealing washer install promptly and dismantle.
In this embodiment, there is a gap between adjacent sealing sheets 6, and the gap makes the sealing ring have an expandable space when being heated and expanded in the closed space, so as to avoid the self-cracking damage of the sealing ring due to expansion stress, ensure the sealing effect of the sealing member, and prolong the service life of the sealing member.
In this embodiment, gaps exist between the sealing sheets 6 on the adjacent sealing rings, so that a labyrinth-like sealing structure can be formed between the sealing rings, the sealing sheets 6 on the sealing rings seal the gaps on the adjacent sealing rings, leakage at the gaps is prevented, and stable sealing performance is ensured.
Example 2
Further embodiments are presented which can be implemented on the basis of example 1.
As shown in fig. 2-4, the sealing ring is composed of two sealing sheets 6, so that on one hand, the number of the sealing sheets 6 is reduced, the installation of a plurality of sealing sheets 6 during installation is avoided, and the installation complexity is reduced; on the other hand, the number of the sealing sheets 6 is reduced, so that the number of gaps between the sealing sheets 6 can be reduced, and the stability of sealing performance is ensured; finally, the number of sealing sheets 6 is reduced, so that the subsequent positioning complexity can be reduced.
In a practical embodiment, when the sealing sheet 6 is manufactured, the cutting lines are uniformly distributed when the sealing ring is cut, so that the sealing sheet 6 with the same geometric shape and geometric dimension forming the sealing ring is formed, when the sealing ring is expanded by heating, the unequal deformation of the sealing sheet 6 caused by the difference of the geometric dimension and the shape is reduced, specifically, the difference of the geometric dimension and the shape can cause the same material to have heat tolerance, so that the unequal deformation occurs at the same temperature, and the geometric shape and the size of the sealing sheet 6 are the same in order to ensure uniform expansion.
Example 3
Further embodiments are provided which can be implemented on the basis of any one of the embodiments 1-2.
As shown in fig. 1-3, at least two sealing rings comprise a top sealing ring 1, a plurality of middle sealing rings 2 and a bottom sealing ring 3; the middle seal ring 2 may be optional according to the seal height requirement of the seal position, and in this embodiment, the number of the middle seal rings 2 is one.
As shown in FIG. 1, each sealing piece 6 on the sealing ring is provided with a positioning structure for positioning connection with an adjacent sealing ring, the adjacent sealing rings are mutually positioned and connected through the positioning structure, the relative position stability between the sealing pieces 6 is ensured, the gap staggered position stability on the adjacent sealing rings is further ensured, the sealing rings are prevented from overlapping in the gap between the sealing pieces 6 due to relative sliding in the use process, and medium leakage is avoided.
As shown in fig. 2-4, the positioning structure is a positioning hole 4 and a positioning protrusion 5, for adjacent sealing rings, the positioning hole 4 is arranged on a sealing block on one sealing ring, the positioning protrusion 5 is arranged on a sealing block on the other sealing ring, and when the adjacent sealing rings are assembled, the positioning protrusion 5 is assembled in the positioning hole 4, so that the positioning between the adjacent sealing rings is realized.
In a possible embodiment, the positioning hole 4 is a countersunk hole, so that leakage of the medium from the positioning hole 4 in the positioning structure is avoided.
In a practical embodiment, a gap exists between the outer wall of the positioning protrusion 5 and the inner wall of the positioning hole 4, and the gap gives the thermal expansion space to the positioning protrusion 5 and the positioning hole 4, so that the outer wall of the positioning protrusion 5 and the inner wall of the positioning hole 4 are prevented from being mutually extruded due to thermal expansion, and the sealing ring is prevented from being damaged.
A possible specific embodiment is that the inner end surface of the top sealing ring 1 is provided with a positioning hole 4 and/or a positioning protrusion 5; the inner end face and the outer end face of the middle sealing ring 2 are respectively provided with a positioning hole 4 or/and a positioning protrusion 5; the inner end surface of the bottom sealing ring 3 is provided with a positioning hole 4 and/or a positioning protrusion 5.
Specifically, in this embodiment, the inner end surface refers to the end surface close to the middle seal ring 2; in the embodiment, a positioning hole 4 is formed in the inner end surface of the top sealing ring 1, and a positioning protrusion 5 is formed in the end surface, close to the top sealing ring 1, of the middle sealing ring 2; the inner end surface of the bottom sealing ring 3 is provided with a positioning protrusion 5, and the end surface of the middle sealing ring 2 close to the bottom sealing ring 3 is provided with a positioning hole 4; or the inner end surface of the top sealing ring 1 is provided with a positioning protrusion 5, and the end surface of the middle sealing ring 2, which is close to the top sealing ring 1, is provided with a positioning hole 4; the inner end surface of the bottom sealing ring 3 is provided with a positioning hole 4, and the end surface of the middle sealing ring 2, which is close to the bottom sealing ring 3, is provided with a positioning protrusion 5; or the inner end surface of the top sealing ring 1 is provided with a positioning hole 4 and a positioning protrusion 5, and the end surface of the middle sealing ring 2, which is close to the top sealing ring 1, is provided with a corresponding positioning protrusion 5 and a positioning hole 4; the inner end surface of the bottom sealing ring 3 is provided with a positioning protrusion 5 and a positioning hole 4, and the end surface of the middle sealing ring 2, which is close to the bottom sealing ring 3, is provided with the positioning hole 4 and the positioning protrusion 5. Of course, the arrangement of the positioning holes 4 and the positioning projections 5 is not limited to the above three methods, and other possible combinations may be adopted.
In a practical embodiment, the positioning structures are uniformly arranged along the circumferential direction of the sealing ring, so that uniform positioning stress distribution is ensured.
The utility model is not limited to the specific embodiments described above. The utility model extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (10)
1. A split type sealing ring for superhigh pressure steam vent valve, its characterized in that: the sealing device comprises at least two sealing rings, wherein all the sealing rings are coaxially arranged and the end surfaces are attached; the sealing ring consists of a plurality of sealing sheets (6), gaps exist between the adjacent sealing sheets (6) on the same sealing ring, and the gaps on the adjacent sealing rings are staggered.
2. The seal ring of claim 1, wherein: the sealing ring consists of two sealing sheets (6).
3. A seal ring according to any one of claims 1-2, wherein: all sealing strips (6) constituting the sealing ring have the same geometry and dimensions.
4. The seal ring of claim 1, wherein: at least two sealing rings comprise a top sealing ring (1), a plurality of middle sealing rings (2) and a bottom sealing ring (3).
5. The seal ring of claim 4, wherein: each sealing sheet (6) on the sealing ring is provided with a positioning structure for positioning connection with the adjacent sealing ring.
6. The seal ring of claim 5, wherein: the positioning structure comprises a positioning hole (4) and a positioning protrusion (5) which is used for being assembled in the positioning hole (4).
7. The seal ring of claim 6, wherein: the positioning hole (4) is a countersunk hole.
8. The seal ring of claim 6, wherein: a gap exists between the outer wall of the positioning protrusion (5) and the inner wall of the positioning hole (4).
9. The seal ring of claim 6, wherein: a positioning hole (4) or/and a positioning protrusion (5) are arranged on the inner end surface of the top sealing ring (1); positioning holes (4) or/and positioning protrusions (5) are respectively arranged on the inner end face and the outer end face of the middle sealing ring (2); the inner end surface of the bottom sealing ring (3) is provided with a positioning hole (4) or/and a positioning protrusion (5).
10. A seal ring according to any one of claims 5 to 9, wherein: the positioning structures are uniformly arranged along the circumferential direction of the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561486.7U CN219933144U (en) | 2023-06-19 | 2023-06-19 | Split type sealing ring for ultrahigh pressure steam vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561486.7U CN219933144U (en) | 2023-06-19 | 2023-06-19 | Split type sealing ring for ultrahigh pressure steam vent valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933144U true CN219933144U (en) | 2023-10-31 |
Family
ID=88500071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321561486.7U Active CN219933144U (en) | 2023-06-19 | 2023-06-19 | Split type sealing ring for ultrahigh pressure steam vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933144U (en) |
-
2023
- 2023-06-19 CN CN202321561486.7U patent/CN219933144U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2325442B1 (en) | Sealing apparatus and engines | |
| CN105736701A (en) | Arch-bound ring seal and ring seal system including an arch-bound ring seal | |
| CN107939455B (en) | Gas turbine and seal assembly thereof | |
| EP2559859B1 (en) | Seal end attachment | |
| US10578127B2 (en) | Vane ring, inner ring, and turbomachine | |
| KR20160087343A (en) | Seal ring for hydrogen cooled generator | |
| EP2813670B1 (en) | Stationary part sealing structure | |
| CN219933144U (en) | Split type sealing ring for ultrahigh pressure steam vent valve | |
| CN201606246U (en) | Floating lateral plate for high-pressure gear oil pump with annular balance tank | |
| JP5330670B2 (en) | Improved fluid actuator for application inside a turbomachine | |
| CN109707468B (en) | Be applied to high-efficient structure of obturating between static machine casket | |
| US8251371B2 (en) | Segmented sealing lips for labyrinth sealing rings | |
| US3083975A (en) | Shaft seals | |
| US3305012A (en) | Heat exchanger bundle | |
| CN103982248B (en) | There is the vane sealing device of gap control function | |
| CN104791103A (en) | Sealing structure for static-static chambers of gas turbine | |
| EP3879081A1 (en) | Turbine stator blade | |
| CN112610336B (en) | Interstage seal ring sealing structure | |
| CN211464494U (en) | Inner ring hydraulic expanding mechanism | |
| CN103407025B (en) | The Non-airhole type activating mold of bimetallic combining structure and pattern block thereof | |
| CN110681767A (en) | Inner ring hydraulic expanding mechanism | |
| JP2010285924A (en) | Steam turbine and stationary part sealing structure thereof | |
| KR102209143B1 (en) | Method for manufacturing expansion sleeve seal | |
| CN205190736U (en) | Many times way metal seal gaskets | |
| CN102235445B (en) | Dissection structural high-torque pneumatic tire friction clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |