CN210889039U - Spiral-flow type broach vapor seal - Google Patents
Spiral-flow type broach vapor seal Download PDFInfo
- Publication number
- CN210889039U CN210889039U CN201921773018.XU CN201921773018U CN210889039U CN 210889039 U CN210889039 U CN 210889039U CN 201921773018 U CN201921773018 U CN 201921773018U CN 210889039 U CN210889039 U CN 210889039U
- Authority
- CN
- China
- Prior art keywords
- cavity
- tooth
- gland
- vapor seal
- seal
- 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
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a spiral-flow type broach vapor seal, a serial communication port, including the low tooth of vapor seal, be equipped with the cavity between the low tooth of vapor seal and vapor seal, the cavity is by cavity one with cavity two and cavity three-section type throttle inflation space of connecting formation, is equipped with direction throttle tooth in the cavity, direction throttle tooth and cavity all are equipped with the anti-overflow that prevents the whirl offset and protect the tooth. The utility model discloses a not changing under the prerequisite that gland tooth quantity does not increase gland occupation space, the cavity that has increased the formation of gland tooth and intertooth improves the throttle inflation effect of gland greatly, carries out abundant consumption with the energy of vapour, improves steam turbine wholeness ability. The utility model is used for the steam turbine can not change gland tooth quantity and does not increase gland occupation space, realizes improving the airtight effect of gland, safe and reliable.
Description
Technical Field
The utility model relates to a spiral-flow type broach vapor seal mainly is applied to steam turbine vapor seal system, belongs to turbine mechanical seal technical field.
Background
In turbo machinery, the traditional comb-tooth steam seal is realized by stopping steam through steam seal teeth and fully consuming the energy of the steam as much as possible by utilizing a cavity formed between the steam seal teeth through throttling expansion, so that the steam sealing effect of the steam seal is realized. The more the tooth number of the steam seal tooth, the better the steam blocking effect, the larger the cavity formed between the steam seal tooth and the tooth, the better the throttling expansion effect, and the more sufficient the energy consumption of steam. However, because the space occupied by the steam seal is limited, the increase of the number of the steam seal teeth inevitably causes the reduction of the cavities between the teeth, thereby reducing the throttling expansion effect; the increase of the cavities between the teeth necessarily reduces the number of the steam seal teeth, thereby reducing the steam blocking effect of the steam seal teeth.
Disclosure of Invention
The utility model discloses the technical problem who solves: how to solve the contradiction between the number of the steam seal teeth and the size of the cavity between the teeth in the traditional comb-tooth steam seal.
In order to solve the technical problem, the technical scheme of the utility model a spiral-flow type broach vapor seal is provided, a serial communication port, including the low tooth of vapor seal, be equipped with the cavity between the low tooth of vapor seal and vapor seal, the cavity is by cavity one with cavity two and cavity three-phase section formula throttle inflation space of being connected formation, is equipped with direction throttle tooth in the cavity, direction throttle tooth and cavity all are equipped with the anti-overflow that prevents the whirl offset and protect the tooth.
Preferably, the chamber has a smooth streamline arc structure.
The utility model discloses a not changing under the prerequisite that gland tooth quantity does not increase gland occupation space, the cavity that has increased the formation of gland tooth and intertooth improves the throttle inflation effect of gland greatly, carries out abundant consumption with the energy of vapour, improves steam turbine wholeness ability. The utility model is used for the steam turbine can not change gland tooth quantity and does not increase gland occupation space, realizes improving the airtight effect of gland, safe and reliable.
Drawings
FIG. 1 is a schematic structural view of a spiral-flow type comb gland seal;
fig. 2 is a schematic structural view of a spiral-flow type comb steam seal three-section chamber.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a spiral-flow type broach vapor seal, as shown in figure 1. The spiral-flow type comb gland seal is provided with a cavity 2 between the gland seal low teeth 1 and the gland seal low teeth 1, the cavity 2 is internally provided with a guide throttling tooth 6, and the guide throttling tooth 6 and the cavity 2 are both provided with an anti-overflow guard tooth 7.
As shown in fig. 2, the newly added chamber three 5 and the original chamber one 3 and the original chamber two 4 form a three-stage throttling expansion space.
Steam enters the first chamber 3 through the steam seal low teeth 1 to finish the first section of throttling expansion to consume partial steam energy, then forms a rotational flow through the guide throttling teeth 6 to enter the second chamber 4 to finish the second section of throttling expansion to consume partial steam energy, the steam forming the rotational flow enters the third chamber 5 through the second chamber 4 with streamline design to finish the third section of throttling expansion to consume partial steam energy, and the overflow-proof guard teeth 7 are arranged to prevent the overflow of the steam when the steam enters different chambers. The energy of the steam is fully consumed through the three-section throttling expansion of the spiral-flow type comb steam seal, so that the steam sealing effect of the steam seal is improved.
Claims (2)
1. The utility model provides a spiral-flow type broach vapor seal, its characterized in that, hangs down tooth (1) including the vapor seal, hangs down tooth (1) and vapor seal and is equipped with cavity (2) between tooth (1) at the vapor seal, and cavity (2) are the syllogic throttle inflation space that is formed by cavity (3) and cavity two (4) and cavity three (5) connection, are equipped with direction throttle tooth (6) in cavity (2), and direction throttle tooth (6) and cavity (2) all are equipped with the anti-overflow that prevents the whirl offset and protect tooth (7).
2. A spiral-flow type comb gland seal according to claim 1, characterized in that the chamber (2) has a smooth streamline arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773018.XU CN210889039U (en) | 2019-10-21 | 2019-10-21 | Spiral-flow type broach vapor seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773018.XU CN210889039U (en) | 2019-10-21 | 2019-10-21 | Spiral-flow type broach vapor seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210889039U true CN210889039U (en) | 2020-06-30 |
Family
ID=71336409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921773018.XU Active CN210889039U (en) | 2019-10-21 | 2019-10-21 | Spiral-flow type broach vapor seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210889039U (en) |
-
2019
- 2019-10-21 CN CN201921773018.XU patent/CN210889039U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214092224U (en) | Improved air inlet structure of air compressor | |
| CN210889039U (en) | Spiral-flow type broach vapor seal | |
| CN205278474U (en) | Pressurized construction of overflow valve | |
| CN204200279U (en) | A kind of turbine high-temperature heat expansion compensates stator sealing configuration | |
| CN109139334B (en) | Mixed-flow long-short blade water turbine | |
| CN103470774B (en) | A kind of stepped shaft labyrinth seal | |
| CN102979628B (en) | A kind of method realizing gas-steam combined cycle set frequency modulation function | |
| CN204739222U (en) | Gas lubrication helicla flute terminal surface mechanical seal structure tied in a bundle | |
| CN202417615U (en) | High-efficiency transverse tooth steam seal | |
| CN203783645U (en) | Steam seal ring connecting structure | |
| CN108533757A (en) | A kind of labyrinth seal structure that can increase chamber dissipation | |
| CN206449022U (en) | Processing structure is leaked between multi stage axial flow compressor level | |
| CN214464420U (en) | Flow-dividing pressure-reducing type steam seal structure of steam turbine | |
| CN202560332U (en) | Single/double-tooth double-sided lateral-tooth adjustable steam seal | |
| CN209163878U (en) | A kind of high helical teeth packing of comb teeth | |
| CN207109722U (en) | A kind of pumping plant water outlet is confluxed cell structure | |
| CN103410768A (en) | Air suction assembly for safety type electric fan | |
| CN211975071U (en) | Comb-tooth type vortex steam seal for rotor shaft of steam turbine | |
| CN109488391B (en) | Vortex steam seal of steam turbine | |
| CN205400820U (en) | Combination formula vapor seal for steam turbine | |
| CN207086877U (en) | A kind of flat recess type is vented block structure | |
| CN206673208U (en) | A kind of power outlet for being used to install at walled within doors | |
| CN216198317U (en) | Turbine vortex type steam seal structure | |
| CN103644118B (en) | Circulating pump in parallel, combination circulating pump, compound circulating pump and unit of bleeding thereof | |
| CN205714294U (en) | Throttling expansion formula intensive tooth packing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |