CN216577417U - Vapor seal arc section fixing device - Google Patents
Vapor seal arc section fixing device Download PDFInfo
- Publication number
- CN216577417U CN216577417U CN202122525794.1U CN202122525794U CN216577417U CN 216577417 U CN216577417 U CN 216577417U CN 202122525794 U CN202122525794 U CN 202122525794U CN 216577417 U CN216577417 U CN 216577417U
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- steam seal
- positioning pin
- arc section
- partition plate
- positioning
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Abstract
The utility model discloses a steam seal arc section fixing device which comprises a steam seal partition plate, wherein a steam seal arc section body is sleeved on the inner side of the steam seal partition plate, a plurality of steam seal teeth are arranged on the inner side of the steam seal arc section body, a spring piece is arranged between the outer side of the steam seal arc section body and the steam seal partition plate, a positioning pin hole is formed in the steam seal partition plate, a through hole is formed in the steam seal arc section body and corresponds to the positioning pin hole formed in the steam seal partition plate, a positioning pin is arranged in the positioning pin hole, the head and the root of the positioning pin are provided with threads, the middle of the positioning pin is in contact fit with the through hole in the steam seal arc section body, the root of the positioning pin is in threaded connection with a positioning nut, the root of the positioning pin is in threaded connection with the position of one half of the inner side of the positioning nut, and the position of one half of the outer side of the positioning nut is in threaded connection with a positioning bolt. The utility model can solve the problem that the steam seal arc sections at the end parts of two sides fall off in the process of lifting the upper steam seal partition plate when the steam seal arc sections of the traditional Braiden type steam seal are installed.
Description
Technical Field
The utility model belongs to the technical field of industrial steam turbine equipment installation, and particularly relates to a gland sealing arc section fixing device.
Background
At present, when an industrial turbine is installed, a dead-tooth steam seal is normally adopted in an inner cylinder of the turbine, and a Braiden type steam seal is generally adopted in a steam seal partition plate (a partition plate sleeve). When the steam seal arc sections of the Braiden type steam seal are installed, four steam seal arc sections are normally installed on an upper steam seal partition plate and a lower steam seal partition plate (partition plate sleeve), and each steam seal arc section is elastically fixed with the steam seal partition plate (partition plate sleeve) through a spring piece installed on a back arc. However, in the process of lifting the upper steam seal partition plate (partition plate sleeve), the situation that the steam seal arc sections at the two side ends fall off inevitably occurs due to the gravity of the steam seal arc sections and the reason that the elasticity of the spring pieces is degraded due to long-time operation, and unnecessary troubles are brought to the installation process, so that the steam seal arc section fixing device is adopted to limit the steam seal arc sections at the two side ends of the steam seal partition plate (partition plate sleeve), and the steam seal partition plate (partition plate sleeve) is very necessary.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a steam seal arc section fixing device to solve the problem that when a steam seal arc section of an existing Brabender type steam seal is installed, steam seal arc sections at two side ends fall off in the process of lifting an upper steam seal partition plate (partition plate sleeve).
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a steam seal arc section fixing device comprises a steam seal partition plate, wherein a steam seal arc section body is sleeved on the inner side of the steam seal partition plate, a plurality of steam seal teeth are arranged on the inner side of the steam seal arc section body, a spring piece is arranged between the outer side of the steam seal arc section body and the steam seal partition plate, a positioning pin hole is formed in the steam seal partition plate, a through hole is formed in the steam seal arc section body at a position corresponding to the positioning pin hole formed in the steam seal partition plate, a positioning pin is arranged in the positioning pin hole, the head and the root of the positioning pin are provided with threads, a polished rod is arranged in the middle of the positioning pin, the positioning pin is matched with the inner head of the positioning pin hole, the root of the positioning pin is in threaded connection with the positioning pin hole, the middle of the positioning pin is in contact fit with the through hole in the steam seal arc section body, a positioning nut is in threaded connection with the root of the positioning pin, and is attached to the steam seal partition plate, the root of the positioning pin is in threaded connection with the half position on the inner side of the positioning nut, the half position on the outer side of the positioning nut is in threaded connection with the positioning bolt, and the positioning bolt abuts against the root of the positioning pin.
Preferably, the inside of gland sealing arc section body is provided with 4 gland sealing teeth.
Preferably, a plurality of gland sealing teeth arranged on the inner side of the gland sealing arc section body are equally spaced.
Preferably, the locating pin is of a hollow structure.
Preferably, the steam seal tooth is of a structure with a large upper part and a small lower part.
The utility model has at least the following advantages:
1. the steam seal arc sections at two ends of the steam seal partition plate (partition plate sleeve) of the industrial steam turbine can be limited, the steam seal arc sections are prevented from falling off in the process of lifting the partition plate (partition plate sleeve), and the efficiency and the safety of installation work are improved; 2. the steam seal arc section is fixed through the positioning pin, and the steam seal arc section is simple and convenient to install and disassemble.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic cross-sectional view of a vapor seal arc segment installation apparatus of the present invention;
FIG. 2 is a schematic structural view of a vapor seal arc segment mounting device of the present invention;
wherein: 1-a gland sealing arc section body; 2-spring leaf; 3-steam seal tooth; 4-positioning pin holes; 5-a vapor seal baffle; 6-positioning pins; 7-positioning the nut; 8-positioning bolt.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. 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.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a method for fixing a gland sealing arc section is characterized by comprising the following steps:
s1, keeping the sizes of an original steam seal partition plate and a steam seal arc section body unchanged, adding a concentric positioning pin hole on the steam seal partition plate and the steam seal arc section body, and tapping a thread on the positioning pin hole on the steam seal partition plate;
s2, manufacturing a positioning pin, and tapping threads on the head and the root of the positioning pin;
s3, mounting a positioning pin in concentric positioning pin holes in the steam seal partition plate and the steam seal arc section body;
s4, screwing a positioning nut into the root of the positioning pin until the positioning nut is attached to the steam seal partition plate, and screwing a positioning bolt into the other side of the positioning nut until the root of the positioning bolt touches the root of the positioning pin.
The positioning pin holes on the steam seal arc section in the S1 are smooth.
The middle part of the locating pin in S2 is a smooth section.
And S1, the hole wall of the positioning pin hole on the steam seal arc section body is smooth.
In the S3, the thread part of the positioning pin screw is matched with the positioning pin hole on the steam seal clapboard, and the middle polish rod part is matched with the positioning pin hole on the steam seal arc section body.
A kind of gland sealing arc section fixing device includes the gland sealing baffle 5, the inboard cover of the gland sealing baffle 5 has body 1 of the gland sealing arc section, the inboard of the body 1 of the gland sealing arc section has a plurality of gland sealing teeth 3, there are spring leaves 2 between body 5 of the gland sealing arc section and the outside of the body 1 of the gland sealing arc section, set up the locating pin hole 4 on the gland sealing baffle 5, set up the through hole in the position corresponding to locating pin hole 4 that set up on the body 1 of the gland sealing arc section, set up the locating pin 6 in the locating pin hole 4, the head and root of the locating pin 6 have whorls, the middle of the locating pin 6 is the polished rod, the locating pin 6 cooperates in the head and root and locates the pin hole 4 whorl connection in the locating pin hole 4, the middle part of the locating pin 6 cooperates with through hole on the body 1 of the gland sealing arc section, utilize the polished rod position in the middle of the locating pin 6, can realize the spacing of the body 1 of the gland sealing arc section, the root part of the positioning pin 6 is in threaded connection with a positioning nut 7, the positioning nut 7 is attached to the steam seal partition plate 5, the root part of the positioning pin 6 is in threaded connection with the half position of the inner side of the positioning nut 7, the half position of the outer side of the positioning nut 7 is in threaded connection with a positioning bolt 8, and the positioning bolt 8 abuts against the root part of the positioning pin 6 to prevent the positioning pin 6 from loosening;
the inner side of the steam seal arc section body 1 is provided with 4 steam seal teeth 3;
a plurality of gland sealing teeth 3 arranged on the inner side of the gland sealing arc section body 1 are equal in interval;
in order to facilitate screwing the positioning pin 6, the positioning pin 6 is arranged to be a hollow structure;
the steam seal teeth 3 are of a structure with a large upper part and a small lower part;
the specific installation method comprises the following steps: in the installation process, the steam seal arc section body 1 is completely installed in place, the steam seal arc section body 1 and the pin holes in the steam seal partition plate 5 are concentric, and then the positioning pins 6 on the two sides are installed. After the positioning pin 6 is installed in place, the root of the positioning pin 6 is in threaded connection with a positioning nut 7, the positioning nut 7 is attached to the steam seal partition plate 5, the root of the positioning pin 6 is in threaded connection with the half position of the inner side of the positioning nut 7, the half position of the outer side of the positioning nut 7 is in threaded connection with a positioning bolt 8, and the positioning bolt 8 abuts against the root of the positioning pin 6 to prevent air flow from being loosened and falling off due to long-time scouring.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (5)
1. A steam seal arc section fixing device is characterized by comprising a steam seal partition plate (5), wherein a steam seal arc section body (1) is sleeved on the inner side of the steam seal partition plate (5), a plurality of steam seal teeth (3) are arranged on the inner side of the steam seal arc section body (1), a spring piece (2) is arranged between the outer side of the steam seal arc section body (1) and the steam seal partition plate (5), a positioning pin hole (4) is formed in the steam seal partition plate (5), a through hole is formed in the steam seal arc section body (1) at a position corresponding to the positioning pin hole (4) formed in the steam seal partition plate (5), a positioning pin (6) is arranged in the positioning pin hole (4), the head and the root of the positioning pin (6) are provided with threads, a polish rod is arranged in the middle of the positioning pin (6), the positioning pin (6) is matched with the head in the positioning pin hole (4) and is in threaded connection with the positioning pin hole (4), the middle part of dowel (6) and the through-hole contact cooperation on the gland arc section body (1), the root threaded connection of dowel (6) has set nut (7), set nut (7) and gland baffle (5) laminate mutually, the root threaded connection of dowel (6) is in the inboard half position of set nut (7), the half position threaded connection in the outside of set nut (7) has positioning bolt (8), positioning bolt (8) top is at the root of dowel (6).
2. A gland seal arc fixing device according to claim 1, characterized in that the inside of the gland seal arc body (1) is provided with 4 gland seal teeth (3).
3. The gland sealing arc section fixing device is characterized in that a plurality of gland sealing teeth (3) arranged on the inner side of the gland sealing arc section body (1) are equally spaced.
4. A gland sealing arc segment fixing device according to claim 1, characterized in that the locating pin (6) is of hollow structure.
5. A gland seal arc segment fixing device according to claim 1, characterized in that the gland seal teeth (3) are of a structure with a big top and a small bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122525794.1U CN216577417U (en) | 2021-10-20 | 2021-10-20 | Vapor seal arc section fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122525794.1U CN216577417U (en) | 2021-10-20 | 2021-10-20 | Vapor seal arc section fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216577417U true CN216577417U (en) | 2022-05-24 |
Family
ID=81638860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122525794.1U Active CN216577417U (en) | 2021-10-20 | 2021-10-20 | Vapor seal arc section fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216577417U (en) |
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2021
- 2021-10-20 CN CN202122525794.1U patent/CN216577417U/en active Active
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