CN208749409U - Steam turbine and power generator - Google Patents
Steam turbine and power generator Download PDFInfo
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- CN208749409U CN208749409U CN201821480715.1U CN201821480715U CN208749409U CN 208749409 U CN208749409 U CN 208749409U CN 201821480715 U CN201821480715 U CN 201821480715U CN 208749409 U CN208749409 U CN 208749409U
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Abstract
The utility model provides a kind of steam turbine and power generator, is related to field of power machinery technology, steam turbine includes cylinder, diaphragm housing ring, partition and rotor；Diaphragm housing ring is fixed on the inner wall of cylinder, and the inner wall of diaphragm housing ring is equipped with multiple partition mounting grooves, and partition is separately positioned in partition mounting groove, forms cavity between adjacent partition；Rotor includes contraction flow region, and contraction flow region is arranged in cylinder and passes through partition；Contraction flow region is equipped with multiple movable vane pieces, and multiple movable vane pieces are separately positioned in each cavity.Rotor includes contraction flow region, contraction flow region is arranged in cylinder, reduces the diameter for the rotor being located in cylinder, need to keep suitable between rotor due to stator blade at a distance from, after root diameter in cylinder reduces, the root diameter (RD) of stator blade also reduces, and declines degree of partial admission, can reduce the series of partial admission partition, quantity of steam for doing useful work will increase, the utilization rate for improving steam can improve unit efficiency well, improve turbine efficiency.
Description
Technical field
The utility model relates to field of power machinery technology, have the vapour more particularly, to a kind of steam turbine, and one kind
The power generator of turbine.
Background technique
Steam turbine is the rotary power machinery that the energy of steam is converted into mechanical work.Also known as steam turbine.Mainly
Prime mover as power generation can also directly drive various pumps, blower, compressor and propeller for vessels etc..Vapour can also be utilized
The steam discharge of turbine or intermediate extraction meet production and heat supply needs in life.
In recent years, due to various increase in fuel prices, to improve efficiency of energy utilization, user in Turbo-generator Set to imitating
The requirement of rate is continuously improved therewith, and Small Turbine starts to develop towards high steam inlet condition, efficient direction.Currently, often
Rule revolving speed associated mode unit be gradually difficult to meet user to unit efficiency, it is energy-saving the needs of.
Currently, the efficiency of domestic traditional Small Turbine product is generally lower, the development of energy green low-carbon is being pushed
Under the big situation of constructional transfer, such product needs innovation and winding level.User's transformation and new power plant construction are to energy source and power
The energy-efficient demand of equipment is very urgent, and efficient high-parameter steam turbine will become optimal solution way because of its product technology advantage
Diameter forms the theory of guidance customer consumption, to generate huge market prospects.
The problem of little volume flow back pressure unit is primarily present at present is: unit volume flow is small, partial admission in unit
The series of degree is more, big so as to cause displacement loss, and the effect of unit is lower.
Utility model content
The purpose of this utility model is to provide a kind of steam turbines, lower to solve turbine efficiency in the prior art
Technical problem.
Steam turbine provided by the utility model, including cylinder, diaphragm housing ring, partition and rotor；
The diaphragm housing ring is fixed on the inner wall of the cylinder, and the inner wall of the diaphragm housing ring is installed equipped with multiple partitions
Slot, the partition are separately positioned in the partition mounting groove, form cavity between the adjacent partition；
The rotor includes contraction flow region, and the contraction flow region is arranged in the cylinder and passes through the partition；The contraction
Portion is equipped with multiple movable vane pieces, and multiple movable vane pieces are separately positioned in each cavity.
Further, the steam turbine further includes stator blade, and the stator blade is arranged on the partition.
Further, the end of the movable vane piece and the stator blade is equipped with extension.
Further, the height of the movable vane piece is greater than or equal to 22mm, and the height of the stator blade is greater than or equal to
20mm。
Further, the root diameter (RD) of the stator blade is 760mm.
Further, the steam turbine further includes front steam seal and rear packing；
The front steam seal and the rear packing are separately positioned on the both ends of the cylinder；And the front steam seal and it is described after vapour
Spring leaf is respectively equipped between envelope and the cylinder.
Further, two regulating valves are additionally provided on the cylinder, two regulating valves are symmetrical arranged, and each described
Regulating valve is equipped with equalizing valve.
Further, nozzle box there are two setting in the cylinder, each nozzle box is connect with a nozzle sets respectively.
Further, the rotor is integral rotor.
Power generator provided by the utility model, including steam turbine described in the utility model.
Steam turbine provided by the utility model, including cylinder, diaphragm housing ring, partition and rotor；The diaphragm housing ring is fixed on institute
State on the inner wall of cylinder, the inner wall of the diaphragm housing ring is equipped with multiple partition mounting grooves, the partition be separately positioned on it is described every
In plate mounting groove, cavity is formed between the adjacent partition；The rotor includes contraction flow region, and the contraction flow region is arranged described
In cylinder and pass through the partition；The contraction flow region is equipped with multiple movable vane pieces, and multiple movable vane pieces are separately positioned on each
In cavity.Wherein, rotor includes contraction flow region, and contraction flow region is arranged in cylinder, reduces the diameter for the rotor being located in cylinder, by
At a distance from stator blade needs to keep suitable between rotor, after the root diameter in cylinder reduces, the root of stator blade is straight
Diameter also reduces, and declines degree of partial admission, can reduce the series of partial admission partition, so that partition quantity be made to reduce, is used for
The quantity of steam for doing useful work will increase, and improve the utilization rate of steam, can improve unit efficiency well, and reduce design, life
The difficulty for producing and installing can reduce entreprise cost well, shorten the production cycle, improve turbine efficiency.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of steam turbine provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the partition in steam turbine provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of the front steam seal in steam turbine provided by the embodiment of the utility model.
Icon: 1- cylinder；2- diaphragm housing ring；3- partition；4- rotor；5- movable vane piece；6- stator blade；7- front steam seal；
Packing after 8-；9- diaphragm gland；10- spring leaf.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", " left side ",
" right side ", "vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, such as there is term " first ", " second ", being used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Wherein, term " first position " and " second position " are two different positions.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
The utility model provides a kind of steam turbine and power generator, and multiple embodiments are given below and mention to the utility model
The steam turbine and power generator of confession are described in detail.
Embodiment 1
Steam turbine provided in this embodiment, as shown in Figure 1 to Figure 3, including cylinder 1, diaphragm housing ring 2, partition 3 and rotor 4；Institute
It states diaphragm housing ring 2 to be fixed on the inner wall of the cylinder 1, the inner wall of the diaphragm housing ring 2 is equipped with multiple 3 mounting grooves of partition, described
Partition 3 is separately positioned in 3 mounting groove of partition, forms cavity between the adjacent partition 3；The rotor 4 includes receiving
Contracting portion, the contraction flow region are arranged in the cylinder 1 and pass through the partition 3；The contraction flow region is equipped with multiple movable vane pieces 5,
Multiple movable vane pieces 5 are separately positioned in each cavity.
Wherein, rotor 4 includes contraction flow region, and contraction flow region is arranged in cylinder 1, subtracts the diameter for the rotor 4 being located in cylinder 1
It is small, need to keep suitable between rotor 4 due to stator blade 6 at a distance from, after 4 diameter of rotor in cylinder 1 reduces, stator blade
6 root diameter (RD) also reduces, this can be such that degree of partial admission declines, and can reduce the series of partial admission partition 3, to make partition
3 quantity are reduced, and the quantity of steam for doing useful work will increase, and are improved the utilization rate of steam, be can be improved turbine efficiency.
Also, the root diameter (RD) of rotor 4 and stator blade 6 reduces, so that 4 volume of rotor becomes smaller, can reduce turbine body
Weight 10% or so can reduce the difficulty of design, production and installation, can reduce cost, shorten the production cycle.
Also, the diameter reduction of rotor 4 can make Temperature Distribution more evenly, additionally it is possible to make steam turbine characteristics of compact layout, save
The arrangement space of steam turbine is decreased while material, is provided conveniently for the arrangement of other ancillary equipments.
Further, the steam turbine further includes stator blade 6, and the stator blade 6 is arranged on the partition 3.Also, institute
The end for stating movable vane piece 5 and the stator blade 6 is equipped with extension, thus suitably increase the height of movable vane piece 5 and stator blade 6,
End secondary flow loss is reduced to a certain extent.
In the present embodiment, the height of the movable vane piece 5 is greater than or equal to 22mm, and the height of the stator blade 6 is greater than or waits
In 20mm, the root diameter (RD) of the stator blade 6 is 760mm.
Further, the steam turbine further includes front steam seal 7 and rear packing 8；The front steam seal 7 and the rear packing 8 divide
The both ends of the cylinder 1 are not set；And spring is respectively equipped between the front steam seal 7 and the rear packing 8 and the cylinder 1
Piece 10, front steam seal 7 and rear packing 8 are respectively sleeved on rotor 4.
Since the root diameter (RD) of rotor 4 and stator blade 6 reduces, the diameter of front steam seal 7 and rear packing 8 can reduce, reduce
8 air leakage of front steam seal 7 and rear packing, improves the unit efficiency of steam turbine.
In addition, diaphragm gland 9 can also be arranged in steam turbine, and since the root diameter (RD) of rotor 4 and stator blade 6 reduces, partition
The diameter of packing 9 also accordingly reduces, and can reduce 9 air leakage of diaphragm gland, improve the unit efficiency of steam turbine.
Front steam seal 7, rear packing 8 and diaphragm gland 9 can have suitable gap between rotor 4, and pass through spring
Piece 10 protects rotor 4 and the front steam seal 7, rear packing 8 or diaphragm gland 9 to play a protective role when rubbing.
Further, two regulating valves are additionally provided on the cylinder 1, two regulating valves are symmetrical arranged, and each institute
It states regulating valve and is equipped with equalizing valve.
Initial steam is entered after stop valve by a main steam pipe is divided to steam pipe to introduce two regulating valves entrance respectively by two
Steam turbine acting, and conventional power unit is four regulating valves.The regulating valve design of steam turbine provided in this embodiment is reasonable, regulating valve
Lifting force is smaller.Each regulating valve has equalizing valve.Two equalizing valves are all turned on when starting, not only can be reduced regulating valve
Lifting force, and it is heated evenly cylinder full admission.
Further, it is set in the cylinder 1 there are two nozzle box, each nozzle box connects with a nozzle sets respectively
It connects.
Nozzle sets use heat-resisting alloy steel welding construction, and steam passage part carries out nitrogen treatment after welding processing.Nozzle
Group is divided into 2 groups, and respectively loaded in the nozzle box preceding cylinder Liang Ge, wherein one end is fixed in nozzle box nozzle sets with positioning pin, separately
One end can be with free wxpansion, and there are enough expansion clearances between each segmental arc of nozzle sets.
Further, the rotor 4 is integral rotor 4.Axis lifting force disk, steam turbine end shaft coupling are one with axis monobloc forging
Body can not take off cylinder and carry out dynamic balancing.
Steam turbine provided in this embodiment, according to steam inlet condition using cam with adjust by the way of vapour stop valve into vapour,
Then steam is set to enter acting in cylinder by nozzle sets, this is through-flow, and design uses impulse structure.Steam enters steam turbine
Convert heat into kinetic energy after grade in partition 3 first, steam flow speed increases, is then changed into its kinetic energy in movable vane piece 5
Mechanical energy rotates turbine rotor 4, to complete the acting of steam.Partition 3 is all using length leaf in design that this is through-flow
Piece, rotor 4 use the form of integral rotor 4, and partition 3 is mounted within diaphragm housing ring 2, and movable vane piece 5 is mounted on 4 body of rotor, lead to
Last years pin is crossed to fix.
Movable vane piece 5 and stator blade 6 use three dimendional blade, have preferable through-flow performance, preferably steam can be guided to do
Function.Reduce rotor 4 and 6 root diameter (RD) of stator blade, match with the flow of acting steam so that before steam turbine in what part into
The quantity of vapour partition 3 is reduced, and is made full use of into the steam in steam turbine, is improved efficiency.
Due to the reduction of 6 root diameter (RD) of rotor 4 and stator blade, so that the thrust of entire steam turbine reduces, to balance thrust,
The pitch diameter of front steam seal 7 and rear packing 8 is also reduced simultaneously, not only ensure that the balance of entire steam turbine thrust, Er Qieyou in this way
In the reduction of 8 diameter of front steam seal 7 and rear packing, so that the gas leakage area of front steam seal 7 and rear packing 8 reduces, reduce 7 He of front steam seal
The leakage vapour of packing 8 afterwards.
In design, first according to agreement and thermodynamic computing scheme, confirmation can use small steam turbine provided in this embodiment
After pitch diameter scheme, the steam admission mode of cylinder and the arrangement of high pressure nozzle are selected according to throttle flow, confirms the position of steam extraction and heat-return port
Set, have to leave behind enough through-flow gaps in the position for used in steam extraction, then according to total sum of series extraction opening location arrangements every
Sleeve-board 2 and partition 3.Through-flow gap is had to leave behind between grade to prevent partition 3 from rubbing due to the deformation of front and back pressure difference with the generation of rotor 4
It wipes, Inter-stage gap can choose different values according to the difference of pressure and series.When being designed for diaphragm gland 9 and front and back packing 8
All there are have spring leaf 10 in certain interval and steam seal ring come the then root that plays a protective role when protecting rotor 4 and steam seal ring friction
Through-flow figure is drawn according to the through-flow data of calculating, the particular/special requirement in technical protocol is fully understood and considered when drawing through-flow figure,
Such as unit exhaust mode does not take off cylinder dynamic balancing, high-speed balancing.
Finally the check of unit intensity, check the main contents include blade frequencies, 4 critical speed of rotor, 3 amounts of deflection of partition
And bearings ratio to press is checked.By strength check, this is through-flow, and design complies fully with steam turbine intensity requirement.
Steam turbine provided in this embodiment, including cylinder 1, diaphragm housing ring 2, partition 3 and rotor 4；The diaphragm housing ring 2 is fixed on
On the inner wall of the cylinder 1, the inner wall of the diaphragm housing ring 2 is equipped with multiple 3 mounting grooves of partition, and the partition 3 is separately positioned on
In 3 mounting groove of partition, cavity is formed between the adjacent partition 3；The rotor 4 includes contraction flow region, the contraction flow region
It is arranged in the cylinder 1 and passes through the partition 3；The contraction flow region is equipped with multiple movable vane pieces 5, multiple movable vane pieces 5
It is separately positioned in each cavity.Rotor 4 includes contraction flow region, and contraction flow region is arranged in cylinder 1, makes the rotor 4 being located in cylinder 1
Diameter reduce, need to keep suitable between rotor 4 due to stator blade 6 at a distance from, 4 diameter of rotor in cylinder 1 reduces
Afterwards, the root diameter (RD) of stator blade 6 also reduces, this can be such that degree of partial admission declines, and can reduce the series of partial admission partition 3,
To make 3 quantity of partition reduce, the quantity of steam for doing useful work will increase, and improve the utilization rate of steam, can be improved steamer
Engine efficiency.
Embodiment 2
Power generator provided in this embodiment, the steam turbine provided including embodiment 1.Wherein, rotor 4 includes contraction flow region,
Contraction flow region is arranged in cylinder 1, reduces the diameter for the rotor 4 being located in cylinder 1, due to needing between stator blade 6 and rotor 4
Suitable distance is kept, after 4 diameter of rotor in cylinder 1 reduces, the root diameter (RD) of stator blade 6 also reduces, and makes partial admission
Degree decline, can reduce the series of partial admission partition 3, so that 3 quantity of partition be made to reduce, the quantity of steam for doing useful work will
Increase, improves the utilization rate of steam, unit efficiency can be improved well, and reduce design, production and the difficulty of installation, it can be very
Reduction entreprise cost well shortens the production cycle, turbine efficiency is improved, to improve the efficiency of power generator.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of steam turbine, which is characterized in that including cylinder, diaphragm housing ring, partition and rotor；
The diaphragm housing ring is fixed on the inner wall of the cylinder, and the inner wall of the diaphragm housing ring is equipped with multiple partition mounting grooves, institute
It states partition to be separately positioned in the partition mounting groove, forms cavity between the adjacent partition；
The rotor includes contraction flow region, and the contraction flow region is arranged in the cylinder and passes through the partition；On the contraction flow region
Equipped with multiple movable vane pieces, multiple movable vane pieces are separately positioned in each cavity.
2. steam turbine according to claim 1, which is characterized in that the steam turbine further includes stator blade, the stator blade
It is arranged on the partition.
3. steam turbine according to claim 2, which is characterized in that the end of the movable vane piece and the stator blade is equipped with
Extension.
4. steam turbine according to claim 3, which is characterized in that the height of the movable vane piece is greater than or equal to 22mm, institute
The height for stating stator blade is greater than or equal to 20mm.
5. steam turbine according to claim 2, which is characterized in that the root diameter (RD) of the stator blade is 760mm.
6. steam turbine according to claim 1, which is characterized in that the steam turbine further includes front steam seal and rear packing；
The front steam seal and the rear packing are separately positioned on the both ends of the cylinder；And the front steam seal and it is described after packing with
Spring leaf is respectively equipped between the cylinder.
7. steam turbine according to claim 1, which is characterized in that be additionally provided with two regulating valves, two institutes on the cylinder
It states regulating valve to be symmetrical arranged, and each regulating valve is equipped with equalizing valve.
8. steam turbine according to claim 1, which is characterized in that it is set in the cylinder there are two nozzle box, it is each described
Nozzle box is connect with a nozzle sets respectively.
9. steam turbine according to claim 1, which is characterized in that the rotor is integral rotor.
10. a kind of power generator, which is characterized in that including steam turbine of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480715.1U CN208749409U (en) | 2018-09-11 | 2018-09-11 | Steam turbine and power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480715.1U CN208749409U (en) | 2018-09-11 | 2018-09-11 | Steam turbine and power generator |
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| Publication Number | Publication Date |
|---|---|
| CN208749409U true CN208749409U (en) | 2019-04-16 |
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ID=66084062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821480715.1U Active CN208749409U (en) | 2018-09-11 | 2018-09-11 | Steam turbine and power generator |
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| Country | Link |
|---|---|
| CN (1) | CN208749409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868889A (en) * | 2018-09-11 | 2018-11-23 | 中国长江动力集团有限公司 | Steam turbine and power generator |
-
2018
- 2018-09-11 CN CN201821480715.1U patent/CN208749409U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868889A (en) * | 2018-09-11 | 2018-11-23 | 中国长江动力集团有限公司 | Steam turbine and power generator |
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