CN206707911U - Reaction turbine and its spindle seal system - Google Patents

Reaction turbine and its spindle seal system Download PDF

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Publication number
CN206707911U
CN206707911U CN201720538814.XU CN201720538814U CN206707911U CN 206707911 U CN206707911 U CN 206707911U CN 201720538814 U CN201720538814 U CN 201720538814U CN 206707911 U CN206707911 U CN 206707911U
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CN
China
Prior art keywords
main shaft
reaction turbine
throw rijng
leaking hole
seal system
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Active
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CN201720538814.XU
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Chinese (zh)
Inventor
王吉祥
吴国涛
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Xinjiang Jetco Construction Supervision Co Ltd
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Xinjiang Jetco Construction Supervision Co Ltd
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Priority to CN201720538814.XU priority Critical patent/CN206707911U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Abstract

The utility model is on a kind of reaction turbine and its spindle seal system, is related to reaction turbine technical field, and main purpose is to improve service life of the spindle of hydroelectric generator set seal assembly in silt basin.The spindle seal system of reaction turbine includes：Top cover, axis hole is offered on top cover；Main shaft, it passes through axis hole, the leaking hole formed with annular between main shaft and axis hole；Web, the end of main shaft is arranged on, positioned at the side of top cover；Throw rijng, it is arranged on main shaft, positioned at the opposite side of top cover, there is spacing distance between the wheel hub of web, the obstructing surface of throw rijng is towards leaking hole；Throw rijng and main shaft synchronous axial system, the obstructing surface of the throw rijng of rotation strike back the water spilt from leaking hole, and waterwall is formed at leaking hole.Throw rijng will not rub with wheel hub, and in high concentration of sediment basin, abrasion is smaller, and maintenance cost is relatively low, without often repairing, can improve the generated energy of wet season.

Description

Reaction turbine and its spindle seal system
Technical field
Reaction turbine technical field is the utility model is related to, more particularly to a kind of reaction turbine and its main shaft Sealing system.
Background technology
The runner of reaction turbine is rotated in water by the reaction force of current, the pressure of current in the course of work Can there are change, but the mainly conversion of pressure energy with kinetic energy.Reaction turbine can be divided into mixed-flow, axial-flow type, diagonal flow type With it is tubular.In Francis turbine, current axially flow out runner radially into water distributor；In axial flow hydraulic turbine, Current radially into stator, axially into outflow runner；In inclined flow turbine, current are radially into stator and to tilt Runner is flowed into the direction of a certain angle of main shaft, or stator and runner are flowed into favour the direction of main shaft；In through-flow type hydro-turbo In machine, current flow into stator and runner vertically.
At present, existing reaction turbine spindle seal system all uses comprehensive contact seal system, such as：Piston with Packing_seal, seal ring and ladder packing_seal, labyrinth ring and ladder packing_seal, pump plate lubrication with clean water and packing_seal, bar Family name's alloy tile gap and packing_seal etc., above spindle seal system seal in high concentration of sediment basin turbine-generator units spindle machine Abrasion is very fast, and maintenance cost is higher, influences the generated energy of wet season.
Utility model content
In view of this, the utility model provides a kind of reaction turbine and its spindle seal system, main purpose are Improve service life of the spindle of hydroelectric generator set seal assembly in silt basin.
To reach above-mentioned purpose, the utility model mainly provides following technical scheme：
On the one hand, embodiment of the present utility model provides a kind of spindle seal system of reaction turbine, including：
Top cover, axis hole is offered on the top cover；
Main shaft, it passes through the axis hole, the leaking hole formed with annular between the main shaft and the axis hole；
Web, the end of the main shaft is arranged on, positioned at the side of the top cover；
Throw rijng, it is arranged on the main shaft, has between the opposite side of the top cover, and the wheel hub of the web There is a spacing distance, the obstructing surface of the throw rijng is towards the leaking hole；The throw rijng and the main shaft synchronous axial system, rotation The throw rijng obstructing surface by the water spilt from the leaking hole strike back, at the leaking hole formed waterwall.
The purpose of this utility model and solve its technical problem and can also be applied to the following technical measures to achieve further.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the obstructing surface of the throw rijng with it is described Spacing distance between the wheel hub of web is between 0.5-2mm.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the obstructing surface is away from the leak The annular arcwall face of hole direction depression.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the obstructing surface is that middle part is remote described The annular inclined plane of leaking hole direction depression.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the throw rijng by surely follow closely with it is described Main shaft orientation.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the working speed of the main shaft be more than etc. In 400r/min.
Optionally, the spindle seal system of foregoing reaction turbine, wherein the working speed of the main shaft exists 1000r/min, 750r/min, 600r/min, 500r/min or 428.6r/min.
On the other hand, embodiment of the present utility model provides a kind of reaction turbine, including：
The spindle seal system of reaction turbine；
The spindle seal system of reaction turbine, including：
Top cover, axis hole is offered on the top cover；
Main shaft, it passes through the axis hole, the leaking hole formed with annular between the main shaft and the axis hole；
Web, the end of the main shaft is arranged on, positioned at the side of the top cover；
Throw rijng, it is arranged on the main shaft, has between the opposite side of the top cover, and the wheel hub of the web There is a spacing distance, the obstructing surface of the throw rijng is towards the leaking hole；The throw rijng and the main shaft synchronous axial system, rotation The throw rijng obstructing surface by the water spilt from the leaking hole strike back, at the leaking hole formed waterwall.
The purpose of this utility model and solve its technical problem and can also be applied to the following technical measures to achieve further.
Optionally, foregoing reaction turbine, wherein the throw rijng is arranged in main shaft seal collecting chamber, the master Sealing collecting chamber connects with the draft tube cone of negative pressure.
The reaction turbine and its spindle seal system provided by above-mentioned technical proposal, technical solutions of the utility model At least there are following advantages：
In the technical scheme that the utility model embodiment provides, web is located at the side of the top cover, and throw rijng is located at The opposite side of the top cover, reaction turbine are in work, throw rijng and main shaft synchronous axial system, the gear of the throw rijng of rotation The water surface can strike back the water spilt from leaking hole, and waterwall is formed at the leaking hole, realize the sealing to leaking hole.Phase For prior art, due to having spacing distance between throw rijng and the wheel hub of web, actually between the two without straight The contact connect, throw rijng will not rub with wheel hub, and in high concentration of sediment basin, abrasion is smaller, and maintenance cost is relatively low, without often repairing, The generated energy of wet season can be improved.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below Describe in detail bright as after.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to this practicality New limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is a kind of partial structurtes of the spindle seal system for reaction turbine that embodiment of the present utility model provides Schematic diagram；
Fig. 2 is that a kind of throw rijng of the spindle seal system for reaction turbine that embodiment of the present utility model provides is cut The structural representation in face；
Fig. 3 is a kind of pipeline connection of the spindle seal system for reaction turbine that embodiment of the present utility model provides Structural representation；
Fig. 4 is a kind of throw rijng of the spindle seal system for reaction turbine that embodiment of the present utility model provides Structural representation.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken, Below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes reaction turbine and its spindle seal system its Embodiment, structure, feature and its effect, describe in detail as after.In the following description, different " embodiment " or What " embodiment " referred to is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can Combined by any suitable form.
Embodiment one
As shown in figure 1, a kind of spindle seal system for reaction turbine that one embodiment of the present utility model proposes, It includes：Top cover 10, main shaft 20, web 30 and throw rijng 40.
Axis hole is offered on top cover 10；Main shaft 20 passes through the axis hole, is formed between the main shaft 20 and the axis hole There is the leaking hole 50 of annular；Web 30 is arranged on the end of the main shaft 20, and web 30 is located at the side of the top cover 10； Throw rijng 40 is arranged on the main shaft 20, and throw rijng 40 is located at the opposite side of the top cover 10, throw rijng 40 and the runner There is spacing distance, the obstructing surface 41 of the throw rijng 40 is towards the leaking hole 50 between the wheel hub 31 of body 30；The water dumping Ring 40 and the synchronous axial system of main shaft 20, the water that the obstructing surface 41 of the throw rijng 40 of rotation will be spilt from the leaking hole 50 Counterattack, waterwall is formed at the leaking hole 50.
In the technical scheme that the utility model embodiment provides, web is located at the side of the top cover, and throw rijng is located at The opposite side of the top cover, reaction turbine are in work, throw rijng and main shaft synchronous axial system, the gear of the throw rijng of rotation The water surface can strike back the water spilt from leaking hole, and waterwall is formed at the leaking hole, realize the sealing to leaking hole.Phase For prior art, due to having spacing distance between throw rijng and the wheel hub of web, actually between the two without straight The contact connect, throw rijng will not rub with wheel hub, and in high concentration of sediment basin, abrasion is smaller, and maintenance cost is relatively low, without often repairing, The generated energy of wet season can be improved.
, can also be high by transforming the reaction turbine of prior art, in the prior art in actual application Rotary speed water turbine use lubrication with clean water during start, transformed later by multiple using the sealing of main shaft piston type plus outer packing_seal Change as the quiet rotating ring clearance seal of mechanical ladder, Yin Kuitun rivers matter is larger containing quantity of sand and mud, and the wet season is per ten kilograms of cubic average Left and right.The stepped sealed abrasion of machinery is very fast, and piston type sealing adds outer packing-type sealing wear very fast and may wear to the big axle of the hydraulic turbine, Replacing machinery is stepped sealed every time must all remove drain elbow and runner, and the stepped sealed adjustment gap precision of installation machinery requires Height, it is not so stepped sealed rotating ring and stationary ring ladder friction damage, to be installed time-consuming when rotating.Nearly ten years, abundance of water The month phase 6-9 serious wear, the multiple equal unobvious of correctional effect, put into a large amount of transformation fundses, a large amount of manpower and materials, have impact on just Normal generated energy.Main shaft seal percolating water design in the past is discharged into sump, is then discharged into tail water with the well pump that catchments, both consuming electric power, The input of manpower and materials is increased again, proposes the transformation to hydraulic turbine main shaft sealing, main shaft seal drainage reconstruction.Improved after transformation Unit generation amount, maintenance personal is reduced, reduce maintenance cost, using electricity wisely, the service life of raising sump equipment.
Transformation process is：
Mechanical seal is removed and is changed to taking turns wheel contactless type throw rijng, i.e., dismounting machinery first is stepped sealed, removes clear Water lubrication pipe-line system, remove main shaft seal and be discharged into sump pipeline, transform main shaft seal, throw rijng is arranged on the main shaft On, sealed with wheel hub contactless type throw rijng.Because having removed the quiet ring seal of mechanical ladder, so not needing lubrication with clean water system System.
Using good, guide vane opening 95% after transformation, main shaft seal is good during load 2500+100kW, without water from main shaft Gap is spilt, and collecting chamber inspection is taken in operation apart after three months, throw rijng abrasion unobvious, with clearance gauge inspection, throw rijng is with taking turns Hub gap is 0.90mm, even wearing, fixed non-loosening, checks thrust bearing shoe valve temperature with, without significant change, checking snail before transformation Shell is shaken with unchanged before transformation, and operational effect is good, and each parameter meets GB/T8564-2003《Water-turbine unit skill Art specification》.
In order to form good sealing effectiveness, the wheel hub of the obstructing surface of the throw rijng and the web at leaking hole Between spacing distance (minimum separation distances) can be between 0.5-2mm.It is preferred that throw rijng ensures 0.85mm-1mm's with wheel hub Gap is preferable.
Wherein, equally there is spacing distance between throw rijng and top cover, preferably can be between 0.5-2mm.
In order to which the water spilt from leaking hole is hit back by obstructing surface, more water attack is retreated at leaking hole, and Waterwall is formed at leaking hole, as shown in Fig. 2 the obstructing surface 41a can be the annular away from leaking hole direction depression Arcwall face.During throw rijng high speed rotates, after the water attack that is spilt from leaking hole is got on obstructing surface, away from the leaking hole side The direction that water is drawn close towards the alignment of shafts can be rebounded to the annular arcwall face of depression, effectively current rebound to leaking hole Place.Specifically, the annular arcwall face of depression can use inner ring surface to be gradually depressed in the arcwall face of outer ring surface, middle ring can also be used Face is gradually depressed in the arcwall face of inner ring surface and outer ring surface.
In another embodiment provided by the utility model, the obstructing surface is that middle part is recessed away from the leaking hole direction Annular inclined plane.During throw rijng high speed rotates, after the water attack that is spilt from leaking hole is got on obstructing surface, middle part is away from institute The annular inclined plane for stating leaking hole direction depression equally can rebound water towards the direction that the alignment of shafts is drawn close, effectively by current At bounce-back to leaking hole.
Also there is main shaft seal collecting chamber in the opposite side of top cover, throw rijng can be arranged in main shaft seal collecting chamber.By Absolute sealing is difficult in waterwall, very small amount of water can be splashed by the interval between throw rijng and top cover to be collected into In main shaft seal collecting chamber.As shown in figure 3, main shaft seal collecting chamber 60 is connected with draft tube cone 70, then born using Taper Pipe Pressure suctions out, and is discharged into draft tube cone and enters tail water.
, can be by transforming the reaction turbine of prior art in actual application, transformation process is：
Main shaft seal collecting chamber is connected with draft tube cone, main shaft seal leak suctioned out using draft tube cone negative pressure, row Enter draft tube cone and enter tail water.
In the synchronous axial system of throw rijng and main shaft is realized, can by arbitrary mode, such as：Between throw rijng and main shaft By key connection, or throw rijng is by surely following closely with the main shaft orientation etc..
If throw rijng uses overall structure, it is not easy to be installed on main shaft, in specific implementation, as shown in figure 4, throw rijng can wrap The the first semi-ring 40a and the second semi-ring 40b of relative fastening are included, passes through bolt 40c between the first semi-ring 40a and the second semi-ring 40b It is fixed.
Leak-stopping annular groove is additionally provided with the axis hole periphery of top cover in addition, the inwall of leak-stopping annular groove forms the axis hole, runner Wheel hub be located in the axis hole, because wheel hub is arranged on the main shaft, in fact, leaking hole is between wheel hub and axis hole Looping pit.
In a ring, the diameter of the outer shroud of annular obstructing surface is more than annular of the leaking hole between wheel hub and axis hole to obstructing surface The external diameter in hole.Specifically, the outer shroud of the obstructing surface of annular can be in sustained height with the outer wall of top cover, or stretch into the leak-stopping In annular groove, section obtains higher dash effect.
Wherein, the working speed of main shaft is higher, and main shaft seal is higher, in order to realize substantially good sealing, the master The working speed of axle can be more than or equal to 400r/min.In specific implementation, the working speed of the main shaft can 1000r/min, 750r/min, 600r/min, 500r/min or 428.6r/min.
Embodiment two
A kind of reaction turbine that the utility model embodiment two provides, including：Spindle seal system, it includes：Top Lid, main shaft, web and throw rijng.
Axis hole is offered on top cover；Main shaft passes through the axis hole, formed with annular between the main shaft and the axis hole Leaking hole；Web is arranged on the end of the main shaft, positioned at the side of the top cover；Throw rijng is arranged on the main shaft On, positioned at the opposite side of the top cover, there is spacing distance between the wheel hub of throw rijng and the web, the throw rijng Obstructing surface is towards the leaking hole；The throw rijng and the main shaft synchronous axial system, the obstructing surface of the throw rijng of rotation will The water counterattack spilt from the leaking hole, forms waterwall at the leaking hole.
Specifically, the spindle seal system described in the present embodiment two can be directly using the described of the offer of above-described embodiment one Spindle seal system, concrete implementation structure can be found in the related content described in above-described embodiment one, and here is omitted.
Specifically, the throw rijng is arranged in main shaft seal collecting chamber, the tail of the main shaft seal collecting chamber and negative pressure Water cone pipe connects.
Specifically, it is used as using head cover drainage transformation to supply water, the technical water supply as winter.Due in the absence of machinery Sealing, tear Discharging bent-tube open when maintenance is also just not present, tear the work such as runner open, reduce labor intensity.
The throw rijng provided in the utility model embodiment is installed well, good processing and manufacturing, and the production of reaction turbine Or improvement expenses is low.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment Point, it may refer to the associated description of other embodiment.
It is understood that the correlated characteristic in said apparatus can be referred to mutually.In addition, in above-described embodiment " the One ", " second " etc. is to be used to distinguish each embodiment, and does not represent the quality of each embodiment.
In the specification that this place provides, numerous specific details are set forth.It is it is to be appreciated, however, that of the present utility model Embodiment can be put into practice in the case of these no details.In some instances, known structure is not been shown in detail And technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more in each utility model aspect Individual, in the description to exemplary embodiment of the present utility model above, each feature of the present utility model is divided together sometimes Group is into single embodiment, figure or descriptions thereof.However, the device of the disclosure should be construed to reflect following meaning Figure：The requires of the utility model features more more than the feature being expressly recited in each claim i.e. claimed. More precisely, as the following claims reflect, it is in terms of utility model single less than disclosed above All features of embodiment.Therefore, it then follows thus claims of embodiment are expressly incorporated in the specific embodiment party Formula, wherein each claim is used as separate embodiments of the present utility model in itself.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the part in the device in embodiment Change and they are arranged in one or more devices different from the embodiment.Can be the component combination in embodiment Into a part, and multiple subassemblies can be divided into addition.Except at least some in such feature are mutual Outside repulsion, any combinations can be used to the institute disclosed in this specification (including adjoint claim, summary and accompanying drawing) There are feature and all parts of so disclosed any device to be combined.Unless expressly stated otherwise, this specification (including Adjoint claim, summary and accompanying drawing) disclosed in each feature can be by providing the replacement of identical, equivalent or similar purpose Feature replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included some features rather than further feature, but the combination of the feature of different embodiments means in this practicality newly Within the scope of type and form different embodiments.For example, in the following claims, embodiment claimed One of any mode can use in any combination.All parts embodiment of the present utility model can be real with hardware It is existing, or realized with combinations thereof.
The utility model is limited it should be noted that above-described embodiment illustrates rather than to the utility model, And those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.In right In it is required that, any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" is not arranged Except part or component not listed in the claims being present.Word "a" or "an" before part or component is not excluded for Multiple such parts or component be present.The utility model can be realized by means of including the device of some different parts. In if the claim of dry part is listed, several in these parts can be come specific body by same part item It is existing.The use of word first, second, and third does not indicate that any order.These words can be construed to title.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal Limitation, any simple modification, equivalent change and modification made to above example according to the technical essence of the utility model, In the range of still falling within technical solutions of the utility model.

Claims (10)

  1. A kind of 1. spindle seal system of reaction turbine, it is characterised in that including：
    Top cover, axis hole is offered on the top cover；
    Main shaft, it passes through the axis hole, the leaking hole formed with annular between the main shaft and the axis hole；
    Web, the end of the main shaft is arranged on, positioned at the side of the top cover；
    Throw rijng, it is arranged on the main shaft, between having between the opposite side of the top cover, and the wheel hub of the web Gauge from, the throw rijng obstructing surface towards the leaking hole；The throw rijng and the main shaft synchronous axial system, the institute of rotation The obstructing surface for stating throw rijng strikes back the water spilt from the leaking hole, and waterwall is formed at the leaking hole.
  2. 2. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    Spacing distance between the wheel hub of the obstructing surface of the throw rijng and the web is between 0.5-2mm.
  3. 3. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    The obstructing surface is the annular arcwall face away from leaking hole direction depression.
  4. 4. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    The obstructing surface is the annular inclined plane that middle part is recessed away from the leaking hole direction.
  5. 5. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    The throw rijng is arranged in main shaft seal collecting chamber.
  6. 6. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    The throw rijng is by surely following closely and the main shaft orientation.
  7. 7. the spindle seal system of reaction turbine according to claim 1, it is characterised in that
    The working speed of the main shaft is more than or equal to 400r/min.
  8. 8. the spindle seal system of reaction turbine according to claim 7, it is characterised in that
    The working speed of the main shaft is in 1000r/min, 750r/min, 600r/min, 500r/min or 428.6r/min.
  9. A kind of 9. reaction turbine, it is characterised in that including：
    The spindle seal system of any described reaction turbine in the claims 1-8.
  10. 10. reaction turbine according to claim 9, it is characterised in that
    The throw rijng is arranged in main shaft seal collecting chamber, and the main shaft seal collecting chamber connects with the draft tube cone of negative pressure.
CN201720538814.XU 2017-05-16 2017-05-16 Reaction turbine and its spindle seal system Active CN206707911U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720538814.XU CN206707911U (en) 2017-05-16 2017-05-16 Reaction turbine and its spindle seal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720538814.XU CN206707911U (en) 2017-05-16 2017-05-16 Reaction turbine and its spindle seal system

Publications (1)

Publication Number Publication Date
CN206707911U true CN206707911U (en) 2017-12-05

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106979115A (en) * 2017-05-16 2017-07-25 新疆银通建设监理有限公司 Reaction turbine and its spindle seal system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106979115A (en) * 2017-05-16 2017-07-25 新疆银通建设监理有限公司 Reaction turbine and its spindle seal system

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