CN206903697U - Sliding pin system of steam turbine - Google Patents
Sliding pin system of steam turbine Download PDFInfo
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- CN206903697U CN206903697U CN201720454758.1U CN201720454758U CN206903697U CN 206903697 U CN206903697 U CN 206903697U CN 201720454758 U CN201720454758 U CN 201720454758U CN 206903697 U CN206903697 U CN 206903697U
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- steam turbine
- sliding pin
- pin system
- self
- bearing housing
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Abstract
The utility model provides a kind of sliding pin system of steam turbine, belongs to steam turbine equipment technical field.It solves sliding key system bite during steam turbine operation in the prior art, impeded casing expansion, the problem of so as to influence the security of unit operation and economy.This sliding pin system of steam turbine includes bearing housing and pedestal, it is characterised in that：Guide frame is connected between bearing housing bottom and Chuck top, a self-lubricating structure set in corresponding is respectively provided with Chuck top and positioned at the both sides of guide frame, self-lubricating structure includes several horizontal storage tanks uniformly and being be arranged in parallel in being spaced, and stores the first self lubrication part being adapted with its shape, size in horizontal storage tank and the first self lubrication part protrudes from opening of horizontal storage tank etc..The advantages of this sliding pin system of steam turbine, is：Lubricating oil and its fueller are not needed, avoids negative effect of the lubricant grease to lubricating system, lubricant effect is preferable.
Description
Technical field
The utility model belongs to steam turbine apparatus field, more particularly, to a kind of sliding pin system of steam turbine.
Background technology
Its rotor, cylinder etc. can expand with heat and contract with cold Steam Turbine with the change of unit temperature in operation, its axle
To swell increment about between 0-35mm.If sliding key system bite, high intermediate pressure cylinder expansion impediment in unit operation, when abnormal, no
But unit economy is influenceed, or even jeopardizes the safe operation of unit.The problem of in order to eliminate expansion impediment, improve unit sliding pin system
Unite necessary.Generally lubricating cup is installed outside pedestal, periodically using oil groove is driven on pedestal in existing sliding pin system of steam turbine
Oiling, in unit operation, grease is pressed into lubricating cup, into oil groove, to reduce friction.The shortcomings that this method is in large area
Fuel feeding is difficult in reciprocating motion, and the time is grown, and the grease in oil groove easily hardens, and blocks oil groove, easily causes bearing housing bottom
Contact surface lubrication is bad between seat and pedestal, causes unit sliding key system bite.
In order to solve the problems, such as that prior art is present, people have carried out long-term exploration, it is proposed that miscellaneous solution
Scheme.For example, Chinese patent literature discloses a kind of sliding pin system of steam turbine [application number：201120436589.1], including axle
Box part and base frame section are held, bearing box part is arranged on base frame section, and feather key placed hole is provided with base frame section, described
Sliding pin system of steam turbine also includes two groups of pressing plates and multiple metal lubrication pieces, and metal lubrication piece is the metal of three-layer self lubricating coating
Lubrication piece, multiple metal lubrication piece levels are laid on the upper surface of base frame section, and the feather key placed hole on base frame section
Place is not laid, and two groups of pressing plates are arranged on the both sides of multiple metal lubrication pieces, and the both ends of multiple metal lubrication pieces are packed in pedestal
On part.
Above-mentioned scheme improves the subproblem of prior art to a certain extent, and still, the program is also at least present
Following defect：Metal lubrication piece is simply attached on pedestal, and connection is insecure, because bearing housing rubs with metal lubrication piece for slip
Wipe, frictional force is big, causes metal lubrication piece service life short, the problems such as supply capability difference.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of reasonable in design, the good steam turbine cunning of using effect
Pin system.
To reach above-mentioned purpose, the utility model employs following technical proposal：Steam turbine sliding pin system of the present utility model
System, including bearing housing and pedestal, it is characterised in that：Guide frame, pedestal top are connected between bearing housing bottom and Chuck top
A self-lubricating structure set in corresponding is respectively provided with end and positioned at the both sides of guide frame, if self-lubricating structure includes
Dry, in horizontal storage tank that is uniform and be arrangeding in parallel is spaced, first be adapted with its shape, size is stored in horizontal storage tank
Self lubrication part and the first self lubrication part protrude from the opening of horizontal storage tank.Horizontal storage tank and it is adapted with its shape, size
The setting of first self lubrication part makes the working strength that the first self lubrication part is difficult for drop-off when being rubbed with bearing housing, improves.
Preferably, the cross section of horizontal storage tank is less than the roundlet arc of 180 degree, the cross section of the first self lubrication part in radian
It is rounded.The circular in cross-section design of first self lubrication part makes the first self lubrication part produce rolling when being in contact with bearing housing
Rub, substantially reduce frictional force, extend the service life of the first self lubrication part, reduce operating cost.
Preferably, self-lubricating structure also includes the organic graphite film layer being covered on Chuck top face.Add lubrication
Face simultaneously further increases greasy property.
Preferably, guide frame includes longitudinal feather key being convexly equipped on bearing housing bottom face and longitudinal direction is opened in pedestal top
The guide key groove at end.Simple in construction, manufacture, installation, maintenance are convenient.
Preferably, self-lubricating structure also includes the second self lubrication part coordinated with feather key in guide key groove.It is logical
Cross stability when bearing housing operation is improved to the lubrication of feather key.
Preferably, longitudinal both sides of guide key groove connect with horizontal storage tank.Its institute when further increasing feather key operation
The supply of the lubricating oil needed, so as to enhance the guarantee of bearing housing safe operation.
Preferably, guide key groove cross section is rectangle, size, shape and the guide key groove cross section of the cross section of feather key
It is adapted.It is simple in construction, be easy to manufacture.
Preferably, feather key is provided with the middle part of bearing housing bottom face, and guide key groove is located at the middle part in Chuck top face.Improve
The stationarity of supporting to bearing housing.
Preferably, guide frame and the first self lubrication part are in vertical distribution each other.Reduce the friction with bearing housing, extend certainly
The service life of lubrication system.
Compared with prior art, it is the advantages of this sliding pin system of steam turbine：First self lubrication part is located at horizontal storage tank
Setting make the working strength that the first self lubrication part is difficult for drop-off when being rubbed with bearing housing, improves, the first self lubrication part circle
Column structure ensures bearing housing in the continuity of pedestal top offset and because for rolling friction, frictional force is reduced, extends
The service life of first self lubrication part, reduce maintenance number, so as to reduce maintenance, maintenance cost, the second self lubrication part
The supply of lubricating oil when further increasing work is set, the even running of bearing housing is further ensured, makes cylinder expansion
It is more unobstructed.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model sliding pin system of steam turbine.
Fig. 2 is the sectional view observed along Fig. 1 line A-A.
In figure, bearing housing 1, pedestal 2, guide frame 3, feather key 31, guide key groove 32, horizontal storage tank 41, first moisten certainly
Saddle 42, the second self lubrication part 43.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment, and following examples are pair
It is of the present utility model explanation and the utility model is not limited to following examples.
As shown in Fig. 1 to 2, this sliding pin system of steam turbine, including bearing housing 1 and pedestal 2, it is characterised in that：The bottom of bearing housing 1
Hold and guide frame 3 is connected between the top of pedestal 2, on the top of pedestal 2 and being respectively provided with one positioned at the both sides of guide frame 3 is in
The self-lubricating structure set is corresponded, self-lubricating structure includes several horizontal storage tanks uniformly and being be arranged in parallel in being spaced
41, the first self lubrication part 42 being adapted with its shape, size is stored in horizontal storage tank 41 and the first self lubrication part 42 protrudes
In the opening of horizontal storage tank 41, the setting of horizontal storage tank 41 and the first self lubrication part 42 being adapted with its shape, size makes
The working strength that first self lubrication part 42 is difficult for drop-off when being rubbed with bearing housing 1, improves.
Specifically, the cross section of horizontal storage tank 41 here is less than the roundlet arc of 180 degree, the first self lubrication part in radian
42 circular in cross-section, the first self lubrication part 42 circular in cross-section design make the first self lubrication part 42 with bearing housing 1
Rolling friction is produced when being in contact, substantially reduces frictional force, the service life of the first self lubrication part 42 is extended, reduces fortune
Row cost；Here self-lubricating structure also includes the organic graphite film layer being covered on the top end face of pedestal 2, adds lubrication
Face simultaneously further increases greasy property；Here guide frame 3 includes the guiding that longitudinal direction is convexly equipped on the bottom face of bearing housing 1
Key 31 and longitudinal direction are opened in the guide key groove 32 on the top of pedestal 2, simple in construction, and manufacture, installation, maintenance are convenient.
Further, self-lubricating structure here also includes coordinate with feather key 31 second in guide key groove 32
Self lubrication part 43, stability when being run by improving bearing housing 1 to the lubrication of feather key 31；Here guide key groove 32
Longitudinal both sides connect with horizontal storage tank 41, further increase feather key 31 run when its needed for lubricating oil supply, from
And enhance the guarantee of the safe operation of bearing housing 1；Here the cross section of guide key groove 32 is rectangle, the cross section of feather key 31
Size, shape are adapted with the cross section of guide key groove 32, simple in construction, be easy to manufacture；Here feather key 31 is provided with bearing housing 1
The middle part of bottom face, guide key groove 32 are located at the middle part of the top end face of pedestal 2, improve the stationarity of the supporting to bearing housing 1；Here
The self lubrication part 42 of guide frame 3 and first in vertical distribution each other, reduce the friction with bearing housing 1, extend self-lubricating structure
Service life.
Here the first self lubrication part 42 and the second self lubrication part 43 can use graphite, molybdenum disulfide, polytetrafluoro transfer to promote
Agent and other additives are made, and can also be made up of lead or kirsite, it is preferred to use coefficient of friction is less than or equal to 0.16 profit
Saddle.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although bearing housing 1, pedestal 2, guide frame 3, feather key 31, guide key groove 32, transverse direction have more been used herein
The terms such as storage tank 41, the first self lubrication part 42, the second self lubrication part 43, but it is not precluded from the possibility using other terms.Make
It is used for the purpose of more easily describing and explaining essence of the present utility model with these terms；It is construed as any attached
The limitation added is all disagreed with the utility model spirit.
Claims (9)
1. a kind of sliding pin system of steam turbine, including bearing housing（1）And pedestal（2）, it is characterised in that described bearing housing（1）Bottom
End and pedestal（2）Guide frame is connected between top（3）, described pedestal（2）On top and it is located at guide frame（3）Two
Side be respectively provided with one in correspond set self-lubricating structure, described self-lubricating structure include several in interval uniformly and
The horizontal storage tank be arrangeding in parallel（41）, described horizontal storage tank（41）Inside store first be adapted with its shape, size certainly
Lubricate part（42）And the first described self lubrication part（42）Protrude from horizontal storage tank（41）Opening.
2. sliding pin system of steam turbine according to claim 1, it is characterised in that described horizontal storage tank（41）Cross section
It is less than the roundlet arc of 180 degree, the first described self lubrication part in radian（42）Circular in cross-section.
3. sliding pin system of steam turbine according to claim 1, it is characterised in that described self-lubricating structure also includes covering
In described pedestal（2）Organic graphite film layer on top end face.
4. sliding pin system of steam turbine according to any one of claims 1 to 3, it is characterised in that described guide frame（3）Bag
Include longitudinal direction and be convexly equipped in bearing housing（1）Feather key on bottom face（31）Pedestal is opened in longitudinal direction（2）The guide key groove on top
（32）.
5. sliding pin system of steam turbine according to claim 4, it is characterised in that described self-lubricating structure also includes being located at
Described guide key groove（32）Interior and feather key（31）The second self lubrication part coordinated（43）.
6. sliding pin system of steam turbine according to claim 4, it is characterised in that described guide key groove（32）Longitudinal direction two
Side and horizontal storage tank（41）Connection.
7. sliding pin system of steam turbine according to claim 4, it is characterised in that described guide key groove（32）Cross section is
Rectangle, described feather key（31）Cross section size, shape and guide key groove（32）Cross section is adapted.
8. sliding pin system of steam turbine according to claim 4, it is characterised in that described feather key（31）Provided with bearing housing
（1）The middle part of bottom face, described guide key groove（32）Located at pedestal（2）The middle part of top end face.
9. sliding pin system of steam turbine according to claim 1, it is characterised in that described guide frame（3）With first certainly
Lubricate part（42）In vertical distribution each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720454758.1U CN206903697U (en) | 2017-04-27 | 2017-04-27 | Sliding pin system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720454758.1U CN206903697U (en) | 2017-04-27 | 2017-04-27 | Sliding pin system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903697U true CN206903697U (en) | 2018-01-19 |
Family
ID=61291457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720454758.1U Active CN206903697U (en) | 2017-04-27 | 2017-04-27 | Sliding pin system of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206903697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412593A (en) * | 2021-12-20 | 2022-04-29 | 东方电气集团东方汽轮机有限公司 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembling method |
-
2017
- 2017-04-27 CN CN201720454758.1U patent/CN206903697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412593A (en) * | 2021-12-20 | 2022-04-29 | 东方电气集团东方汽轮机有限公司 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembling method |
| CN114412593B (en) * | 2021-12-20 | 2023-07-18 | 东方电气集团东方汽轮机有限公司 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembly method |
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