CN215927476U - Active vapor seal structure - Google Patents
Active vapor seal structure Download PDFInfo
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- CN215927476U CN215927476U CN202122583550.9U CN202122583550U CN215927476U CN 215927476 U CN215927476 U CN 215927476U CN 202122583550 U CN202122583550 U CN 202122583550U CN 215927476 U CN215927476 U CN 215927476U
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Abstract
An active steam seal structure. The seal structure of prior art reaches sealed effect through the step-down of working medium self, needs the vapor seal number of teeth many, and the span is long between the axle, and the cylinder size is long, is unfavorable for the reduce cost of enterprise, along with the wearing and tearing of vapor seal tooth, seals vapour effect variation, and unit efficiency reduces. The method comprises the following steps: active gland (5), active gland include stator (7), have gland recess (8) in the stator, install active gland leaf (9) in the gland recess, active gland leaf is installed in the axle head department of rotor (6), active gland leaf is inlayed the rotor external diameter on or direct processing, the stator is installed on gland body B (3), gland body B top is connected with the right side of cylinder bearing seal structure (1), the left side and the gland body A (2) of cylinder bearing seal structure are connected, active gland leaf quantity is a set of, evenly arranges on the circumference along the rotor. The utility model is used for the active steam seal structure.
Description
Technical Field
The utility model relates to the technical field of turbine machinery of turbine and compressor isometric end sealing systems, in particular to an active steam seal structure.
Background
When turbomachinery with gas as working medium, such as a steam turbine, a compressor and the like, operates, the working medium is required to be sealed inside the turbomachinery and cannot be communicated with air, because the turbomachinery mainly comprises a stator, a rotor and the like, when in operation, the rotor part rotates at high speed in the stator part, in order to avoid collision and abrasion between the stator and the rotor to influence the motion of the rotor, a certain gap must be kept between the stator and the rotor, and high-pressure gas working medium of the turbomachinery can leak into the air through the gap between the stator and the rotor, so that the working efficiency and the energy consumption of the turbomachinery can be seriously influenced;
in the prior art, the sealing structure mainly comprises a labyrinth gland seal, a honeycomb gland seal, a floating gland seal, a contact gland seal and the like, gland seal teeth of the gland seals are uniformly arranged on a stator, the main principle is that when a working medium passes through the gland seal structure, a throttling effect is generated, the working medium is expanded, depressurized and accelerated, the pressure of the working medium is reduced through multi-stage gland seal teeth, and the purpose of reducing air leakage is achieved.
These kinds of vapor seal are passive form and seal the vapor seal, reach sealed effect through the step-down of working medium self, consequently the vapor seal number of teeth that needs is many, the bearing seal section length for turbomachinery's span is long between the axle, and the cylinder size is longer, is unfavorable for enterprise's reduce cost, because the bearing seal section size is limited, the outer hourglass of passive form vapor seal can not seal the gas completely, and along with the wearing and tearing of vapor seal tooth, its vapor seal effect will deteriorate, unit efficiency reduces, increase energy consumption.
Disclosure of Invention
The utility model aims to provide an active steam seal structure, which improves the steam leakage condition of the shaft end of a turbine machine and effectively increases the sealing effect of the shaft end.
The above purpose is realized by the following technical scheme:
an active gland sealing structure, comprising: the active gland seal comprises a stator, a gland seal groove is formed in the stator, active gland seal blades are installed in the gland seal groove, the active gland seal blades are installed at the shaft end of a rotor and are embedded in the outer diameter of the rotor or are directly machined, the stator is installed on a gland seal body B, the upper portion of the gland seal body B is connected with the right side of a cylinder shaft seal structure, the left side of the cylinder shaft seal structure is connected with the gland seal body A, and the number of the active gland seal blades is one group and is uniformly distributed along the circumference of the rotor.
The active steam seal structure, 2 passive steam seals are installed to gland A's bottom, gland B bottom install 3 passive steam seals, 2 active steam seals between install one passive steam seal.
Has the advantages that:
1. the utility model relates to an active steam seal structure, which is characterized in that a group of active steam seal blades are arranged at the shaft end of a rotor of a turbine machine, the active steam seal blades can be directly processed or embedded on the rotor, a steam seal groove is correspondingly arranged at the shaft end of a stator, when the turbine machine runs, the active steam seal blades rotate in the steam seal groove along with the rotor to form an active steam seal, and working media are effectively prevented from leaking outside through the shaft end.
2. The active steam seal blade rotates at high speed along with the rotor, and the leaked working medium is blown to the interior of the turbomachine by the steam seal blade, so that a high-pressure area is formed on one side, facing the leaked working medium, of the steam seal blade, and low-pressure are formed on the other side of the steam seal blade, and high-pressure steam seal is formed to achieve a sealing effect.
3. The active steam seal blade has a simple structure, can be combined with the traditional passive steam seal for use, can effectively improve the working efficiency of the turbine machinery and reduce the energy consumption, has a simple structure, can shorten the length of the shaft end of the turbine machinery, and shortens the whole size of the turbine machinery, thereby reducing the cost.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is one of the schematic views of the active gland vane shown in fig. 1.
Fig. 3 is a second schematic view of the active gland vane structure shown in fig. 1.
Wherein: 1. the steam cylinder shaft seal structure comprises a steam seal body A, a steam seal body B, a steam seal body 4, a passive steam seal body 5, an active steam seal body 6, a rotor 7, a stator 8, a steam seal groove 9 and an active steam seal blade.
The specific implementation mode is as follows:
example 1:
an active gland sealing structure, comprising: the active gland seal comprises an active gland seal 5, wherein the active gland seal comprises a stator 7, a gland seal groove is formed in the stator, active gland seal blades 9 are installed in the gland seal groove, the active gland seal blades are installed at the shaft end of a rotor, the active gland seal blades are embedded on the outer diameter of the rotor or are directly machined, the stator is installed on a gland seal body B3, the upper portion of the gland seal body B is connected with the right side of a cylinder shaft seal structure 1, the left side of the cylinder shaft seal structure is connected with a gland seal body A2, the number of the active gland seal blades is one group, and the active gland seal blades are evenly arranged along the circumference of the rotor. .
Example 2:
according to the active steam seal structure in embodiment 1, 2 passive steam seals 4 are installed at the bottom of the steam seal body a, 3 passive steam seals are installed at the bottom of the steam seal body B, and one passive steam seal is installed between 2 active steam seals;
when the turbomachinery operates, the internal high-pressure working medium leaks outwards along the clearance between the stator and the rotor, the active steam seal blade rotates at a high speed in the steam seal groove under the driving of the rotor, at the moment, a high-pressure area is formed on one side of the active steam seal blade facing the outwards-leaking working medium, and a low-pressure area is formed on the other side of the active steam seal blade, so that the high-pressure steam seal effect is formed, and the sealing purpose is achieved.
Claims (2)
1. An active gland sealing structure, comprising: active gland sealing, characterized by: the active gland seal comprises a stator, a gland seal groove is formed in the stator, active gland seal blades are installed in the gland seal groove, the active gland seal blades are installed at the shaft end of a rotor and are embedded on the outer diameter of the rotor or are directly processed, the stator is installed on a gland seal body B, the upper portion of the gland seal body B is connected with the right side of a cylinder shaft seal structure, the left side of the cylinder shaft seal structure is connected with the gland seal body A, the number of the active gland seal blades is one group, and the active gland seal blades are evenly arranged on the circumference of the rotor.
2. The active gland seal structure of claim 1, wherein: the bottom of gland casing A install 2 passive gland sealings, gland casing B bottom install 3 passive gland sealings, 2 active gland sealings between install one passive gland seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122583550.9U CN215927476U (en) | 2021-10-26 | 2021-10-26 | Active vapor seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122583550.9U CN215927476U (en) | 2021-10-26 | 2021-10-26 | Active vapor seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215927476U true CN215927476U (en) | 2022-03-01 |
Family
ID=80404171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122583550.9U Active CN215927476U (en) | 2021-10-26 | 2021-10-26 | Active vapor seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215927476U (en) |
-
2021
- 2021-10-26 CN CN202122583550.9U patent/CN215927476U/en active Active
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