CN207538867U - A kind of steamer pusher side tooth packing - Google Patents
A kind of steamer pusher side tooth packing Download PDFInfo
- Publication number
- CN207538867U CN207538867U CN201720944492.9U CN201720944492U CN207538867U CN 207538867 U CN207538867 U CN 207538867U CN 201720944492 U CN201720944492 U CN 201720944492U CN 207538867 U CN207538867 U CN 207538867U
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- pedestal
- packing
- short
- side tooth
- length
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Abstract
The utility model provides a kind of steamer pusher side tooth packing, inserted, short inserted including installation base, link block, pedestal, length；Steam turbine by the way that packing is fixed, it is long inserted and it is short it is inserted be installed on pedestal, link block connects installation base with pedestal.The utility model substantially increases the sealing effect of packing by the eddy current effect that side tooth generates, and more than 70% sealing effect can be improved compared with broach packing.
Description
Technical field
The utility model is related to a kind of steamer pusher side tooth packings.
Background technology
Steam Turbine in Fire Power Plant packing is taking into account the same of steam turbine economy all using traditional interdigitated electrode structure packing at present
When, the safety of steam turbine is influenced in order to ensure not occurring in steam turbine start-up course serious impact and rub, in units' installation
What labyrinth clearance cannot adjust in the process is too small, and especially high intermediate pressure cylinder gap bridge packing is located at (amount of deflection in the middle part of High inter case
Greatly), most easily mill is touched；After multiple start and stop, gland sealing gear inevitably has a degree of abrasion and makes unit simultaneously
Further increase into gap so that a large amount of steam acting abilities reduce, and decline unit operation economy.It is therefore necessary to vapour
Turbine packing undergoes technological transformation, and reduces air leakage, reduces unit heat consumption, improves the economy of unit.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of steamer pusher side tooth packing.
The utility model is achieved by the following technical programs.
A kind of steamer pusher side tooth packing provided by the utility model, it is inserted, short including installation base, link block, pedestal, length
It is inserted；Steam turbine by the way that packing is fixed, it is long inserted and it is short it is inserted be installed on pedestal, link block is by installation base and pedestal
Connection.
Section is in I-shaped after the installation base, link block, base combination.
The inserted and short inserted inside for being fixed in pedestal of the length, several length are inserted and short inserted are arranged alternately.
The length is inserted to be connected with short inserted upper end by fixed station with pedestal, and long inserted and short inserted one side is equal
It is provided with side bottom of the tooth portion and is both provided with bottom tooth.
The short inserted length is more than long inserted length, it is described it is short it is inserted on bottom number of teeth amount than it is long it is inserted on bottom
Number of teeth amount more one.
The short inserted quantity on pedestal is pedestal.
The quantity on pedestal inserted be spaced apart and divided equally by short according to the length of pedestal.
The beneficial effects of the utility model are：The eddy current effect generated by side tooth substantially increases the sealing effect of packing
Fruit can improve more than 70% sealing effect compared with broach packing.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the inserted sectional view of the utility model；
Fig. 3 is the vortex schematic diagram that side tooth packing generates；
Fig. 4 is the example structure figure of side tooth packing；
In figure：1- installation bases, 2- link blocks, 3- pedestals, 4- long is inserted, and 5- is short inserted, 41- fixed stations, 42- sides tooth,
43- bottoms tooth.
Specific embodiment
Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.
As shown in Figure 1, a kind of steamer pusher side tooth packing, including installation base 1, link block 2, pedestal 3, long inserted by 4, short edge
Tooth 5；Steam turbine is respectively mounted on the base 3 by the way that packing is fixed, long inserted 4 and short inserted 5, and link block 2 is by 1 He of installation base
Pedestal 3 connects.
Section is in I-shaped after the installation base 1, link block 2, pedestal 3 combine.
As shown in Figure 1, the length inserted 4 and short inserted 5 insides for being fixed in pedestal 3, several length inserted 4 and short inserted by 5
It is arranged alternately.
The length inserted 4 and short inserted 5 upper end are connected by fixed station 41 and pedestal 3, long inserted 4 and short inserted 5
One side is both provided with 42 bottom of side tooth and is both provided with bottom tooth 43.
Short inserted 5 length is more than long inserted 4 length, and 43 quantity of bottom tooth on described short inserted 5 is more inserted than long
43 quantity of bottom tooth more one on 4.
Short inserted 5 quantity on the base 3 is pedestal 3.
The quantity on the base 3 is spaced apart and divides equally by short inserted 5 according to the length of pedestal 3.
As shown in figure 3, steam flow increases the air pressure in packing, reduces steam flow outflow by that can generate vortex during the tooth of side.
As shown in figure 4, described 4 during arrangement, it is arranged alternately using two side teeth and three side teeth.Make each inserted
The air flow path of part is different, and between cog turbine generates better apparent.
Side tooth packing is to carry out remodeling optimization design on the basis of former broach gland seal structure, using special process in side and
If kerve processes dry side tooth and bottom tooth, the sealing effect of packing is substantially increased, sealing effect 70% can be improved compared with broach packing
More than.
Crown can be more worked into using special processing process by 0.3mm, the crown of general broach packing is 0.5mm, side tooth
Packing can accomplish that crown is thinner.Gap is installed in principle by the scope of design installation of original host factory, if unit operating mode is preferable, is being protected
Under the premise of demonstrate,proving safety, i.e., sealing effect is not improved to reduce installation gap, under the premise of keeping former gap, installation gap can be with
Design value lower limit is adjusted to, even if touching mill, unit will not be had an impact since crown is thin.
After transforming side tooth packing as, due to the eddy current effect that side tooth generates, steam loss is compared former stage teeth packing and is reduced
28.39%.
Claims (5)
1. a kind of steamer pusher side tooth packing including installation base (1), link block (2), pedestal (3), grows inserted (4), short inserted
(5), it is characterised in that：By the way that packing is fixed, long inserted (4) and short inserted (5) are installed on pedestal (3) steam turbine, even
It connects block (2) to connect installation base (1) and pedestal (3), the length inserted (4) and short inserted (5) upper end pass through fixed station
(41) it is both provided with side tooth (42) bottom with pedestal (3) connection, the one side of long inserted (4) and short inserted (5) and is both provided with bottom
Tooth (43), the length of short inserted (5) are more than the length of long inserted (4), bottom tooth (43) quantity ratio on short inserted (5)
Bottom tooth (43) quantity more one on long inserted (4).
2. steamer pusher side tooth packing as described in claim 1, it is characterised in that：The installation base (1), link block (2), bottom
Section is in I-shaped after seat (3) combination.
3. steamer pusher side tooth packing as described in claim 1, it is characterised in that：The length inserted (4) and short inserted (5) are affixed
In the inside of pedestal (3), several length inserted (4) and short inserted (5) are arranged alternately.
4. steamer pusher side tooth packing as described in claim 1, it is characterised in that：The number of short inserted (5) on pedestal (3)
It measures as pedestal (3).
5. steamer pusher side tooth packing as described in claim 1, it is characterised in that：The quantity on pedestal (3) is the bottom of according to
The length of seat (3) is spaced apart and is divided equally by short inserted (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944492.9U CN207538867U (en) | 2017-07-31 | 2017-07-31 | A kind of steamer pusher side tooth packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944492.9U CN207538867U (en) | 2017-07-31 | 2017-07-31 | A kind of steamer pusher side tooth packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207538867U true CN207538867U (en) | 2018-06-26 |
Family
ID=62607495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720944492.9U Active CN207538867U (en) | 2017-07-31 | 2017-07-31 | A kind of steamer pusher side tooth packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207538867U (en) |
-
2017
- 2017-07-31 CN CN201720944492.9U patent/CN207538867U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |