CN204532662U - A kind of water-turbine top cover, cylindrical valve layout and water turbine thereof - Google Patents
A kind of water-turbine top cover, cylindrical valve layout and water turbine thereof Download PDFInfo
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- CN204532662U CN204532662U CN201520052225.1U CN201520052225U CN204532662U CN 204532662 U CN204532662 U CN 204532662U CN 201520052225 U CN201520052225 U CN 201520052225U CN 204532662 U CN204532662 U CN 204532662U
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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
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Abstract
The utility model discloses the design of a kind of hydraulic turbine structure, particularly a kind of water-turbine top cover, cylindrical valve layout and water turbine thereof, belong to turbine technology field; Described water-turbine top cover structure comprises outer top cover and internal head cover, and described outer top cover is arranged on the seat ring of water turbine, forms the contraction chamber of cylindrical valve cylindrical shell between outer top cover and seat ring, and described internal head cover is arranged on outer top cover; Water-turbine top cover structure of the present utility model, compared to traditional integrated type design of cover, the split-type design of the outer top cover of ingenious employing and internal head cover, for the realization of cylindrical valve maintenance function provides the foundation condition, in described cylindrical valve of water turbine mounting structure, the servomotor of cylindrical valve is arranged on outer top cover, overcome the shortcoming that servomotor must be pulled down by conventional mounting design in maintenance, ensure that the running ability of cylindrical valve in unit maintenance.
Description
Technical field
The utility model relates to a kind of hydraulic turbine structure design, particularly a kind of water-turbine top cover structure and adopts the cylindrical valve layout of this cap structure, belongs to turbine technology field.
Background technique
The cylindrical valve of water turbine, between fixed guide vane and movable guide vane, has that compact structure, flexible operation, hydraulic loss are little, the advantage of good seal performance; The water that spiral case can be entered runner by cylindrical valve is separated, and can play the accident gate action of the closedown of dynamic water, emergency shutdown when accident condition; Cylindrical valve is applied to the power station of single tube diversion mode usually, also has the power station of an indivedual pipe multimachine breeches pipe diversion mode to use.
Based on the structural design of existing water turbine; when unit maintenance; need first fall aqueduct inlet gate and tail lock; tail water is discharged from draft tube; tear generator amature, top cover, runner etc. again open and carry out unit maintenance; because cylindrical valve is arranged on top cover, therefore in maintenance, cylindrical valve must be removed, and the dynamic water making to play when cylindrical valve function is only limitted to accident condition in existing unit is closed, the accident gate action of emergency shutdown.
Summary of the invention
Goal of the invention of the present utility model is: for above-mentioned Problems existing, a kind of water-turbine top cover and the design of cylindrical valve layout are provided, for cylindrical valve provides new installation foundation and mounting type, cylindrical valve also can be come into operation in maintenance process, utilize the excellent properties of cylindrical valve to ensure the Security of maintenance, and improve convenience and the Economy of unit maintenance.
The technical solution adopted in the utility model is as follows:
A kind of water-turbine top cover structure, described top cover comprises outer top cover and internal head cover, and described outer top cover is arranged on the seat ring of water turbine, forms the contraction chamber of cylindrical valve cylindrical shell between outer top cover and seat ring, and described internal head cover is arranged on outer top cover.The contraction chamber of cylindrical valve cylindrical shell is formed between described outer top cover and seat ring, for the lifting of cylindrical valve cylindrical shell, and internal head cover is used for coordinating with the installation of rotary wheel of water turbine, outer top cover like this and internal head cover structural design make only will to complete the maintenance of unit after the dismounting of rotor, internal head cover and runner in maintenance, and outer top cover need not be dismantled, for the realization of the maintenance function of cylindrical valve provides basic condition.
Water-turbine top cover structure of the present utility model, the described lower end surface of outer top cover flushes with the lower end surface of internal head cover, for the installation and operation of movable guide vane.
Further, the junction of described outer top cover lower end and internal head cover lower end is provided with the first Sealing, to prevent water by the gap between outer top cover and internal head cover, ensures the safety of unit.
a kind of cylindrical valve of water turbine layout of the present utility model, comprises above-mentioned water-turbine top cover structure, and the servomotor of described cylindrical valve is arranged on outer top cover.Servomotor is arranged on outer top cover and makes need not dismantle servomotor in maintenance, and is convenient to the normal work ensureing cylindrical valve.
Further, the valve rod of described servomotor is connected with cylindrical shell through contraction chamber, and described cylindrical shell is positioned between seat ring and outer top cover, is provided with sealing mechanism on cylindrical shell between cylindrical shell and outer top cover, makes the sealing function do not affected after internal head cover dismounting between outer top cover and cylindrical shell.
further, on described cylindrical shell, sealing mechanism comprises the sealing strip being arranged at cylindrical shell radial direction and the upper Sealing being arranged at outer top cover, the outer rim of described outer top cover lower end surface is provided with groove, described upper Sealing is arranged in groove by retaining ring, upper Sealing and retaining ring all extend outer top cover outer side wall, and described sealing strip seals with the pressing of upper Sealing phase.Can reach good sealability by this pressing Seal Design, in guarantee, sealing ring is to stressed uniformity, and improves its serviceability.
Further, described upper Sealing is provided with the sealing lip limit of inclination, and described sealing strip is sealed by the phase pressing of sealing lip limit.The sealing lip limit be obliquely installed effectively can be improved the stressed of sealing strip bonding processes and be improved sealing effect, and is conducive to the serviceability improving Sealing.
Cylindrical valve of water turbine layout of the present utility model, the described lower end surface of outer top cover flushes with the lower end surface of internal head cover, the movable guide vane of water turbine is arranged at the position, lower end surface of outer top cover and internal head cover, described movable guide vane and this lower end surface Spielpassung, be provided with wicket gate seal part between Spielpassung face.Wicket gate seal part improves the sealability between stator end face and outer top cover, internal head cover lower end surface.
Cylindrical valve of water turbine layout of the present utility model, between the runner of described internal head cover and water turbine, motive sealing coordinates.
A kind of water turbine of the present utility model, the cap structure described in employing, or the cylindrical valve cylindrical valve of water turbine layout described in adopting.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, described water-turbine top cover structure, compared to traditional integral formula design of cover, adopts the split-type design of outer top cover and internal head cover cleverly, and the maintenance function for cylindrical valve provides the foundation condition;
2, described cylindrical valve of water turbine layout, the servomotor of cylindrical valve is arranged on outer top cover, overcome the shortcoming that servomotor must be pulled down by conventional mounting design in maintenance, ensure that the running ability of cylindrical valve in unit maintenance, between the cylindrical shell of cylindrical valve and outer top cover, Seal Design can ensure the high sealing performance of cylindrical shell in addition, and the outer top seal design after improving in addition also improves the reliability of sealability and sealing.
3, based on water-turbine top cover structure and the design of cylindrical valve cylindrical valve of water turbine layout, compared to the mount scheme of traditional cylindrical valve at water turbine set, while the emergency closing function that cylindrical valve is had in unit running, also there is the ability being applied to maintenance process, cylindrical valve be applied to maintenance process and there is following huge advantage:
A () utilizes sealability and the high reliability of cylindrical valve excellence, the effect of the water blocked in aqueduct and spiral case is played in maintenance, making before overhauling need not water in emptying aqueduct and spiral case, the utilization ratio of effective raising water resources, save the water discharge time before maintenance, it further reduces the filling time in the rear aqueduct of maintenance and spiral case, thus the Maintenance and Repair greatly reducing power station are consuming time;
B () is particularly in the power station of a pipe multimachine breeches pipe diversion patten's design, cylindrical valve is as the Functional Design of service valve, make it possible to treat maintenance unit under other unit work prerequisites and carry out maintenance down operation not affecting, overcome the shortcoming that existing design maintenance other units of unit must be shut down simultaneously, greatly reduce the unit maintenance cost in power station;
C () cylindrical valve, as the Functional Design of service valve, compared to arranging valve at aqueduct for the technological scheme of overhauling, enormously simplify design, saving engineering construction cost and equipment cost.
Accompanying drawing explanation
Fig. 1 is that cross-sectional view arranged by water-turbine top cover of the present utility model and cylindrical valve;
Fig. 2 is the water-turbine top cover schematic top plan view of the utility model Fig. 1;
Fig. 3 is the A point enlarged diagram in the utility model Fig. 1;
Fig. 4 is the combination assumption diagram of upper Sealing, retaining ring and outer top cover, sealing strip in the utility model Fig. 3;
Fig. 5 is the B point enlarged diagram in the utility model Fig. 1.
Mark in figure: the outer top cover of 1-, 2-internal head cover, 21-distinguish face, 3-seat ring, 4-contraction chamber, 5-first Sealing, 6-servomotor, 7-valve rod, 8-cylindrical shell, 9-sealing strip, the upper Sealing of 10-, 101-sealing lip limit, 102-annular seal bar, 11-retaining ring, 12-base ring, 13-lower seal, 14-movable guide vane, 15-runner, 16-fixed guide vane, 17-spiral case.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Water turbine of the present utility model, comprise top cover, runner 15, seat ring 3 and base ring 12, be provided with fixed guide vane 16 between described seat ring 3, between described top cover and base ring 12, be provided with movable guide vane 14, runner 15 coordinates with motive sealing between top cover, the outside of seat ring 3 is spiral case 17, the cylindrical valve of water turbine is arranged between fixed guide vane 16 and movable guide vane 14, connects its cylindrical shell 8 carry out lifting unlatching or decline closing by servomotor 6.
water-turbine top cover structure of the present utility model, its structure is as Fig. 1, shown in Fig. 2, described top cover comprises outer top cover 1 and internal head cover 2, described outer top cover 1 is arranged on the seat ring 3 of water turbine, the contraction chamber 4 of cylindrical valve cylindrical shell is formed between outer top cover 1 and seat ring 3, described internal head cover 2 is arranged on outer top cover 1, described in the present embodiment, outer top cover 1 is a ring structure, be bolted on the seat ring 3 of water turbine, the vertical wall of outer top cover 1 and the vertical wall of seat ring 3 form the contraction chamber 4 of cylindrical valve cylindrical shell, internal head cover 2 is for coordinating with the motive sealing of runner 15, it is bolted on outer top cover 1.
In the present embodiment, the lower end surface of described outer top cover 1 flushes with the lower end surface of internal head cover 2, and the junction of described outer top cover 1 lower end and internal head cover 2 lower end is provided with the first Sealing 5, go out to overflow from the junction plane of outer top cover 1 and internal head cover 2 to prevent high pressure water, its structure as shown in Figure 3, the junction surface of outer top cover 1 and seat ring 3 is also provided with the second Sealing, in addition in the present embodiment, described internal head cover 2 is that at least two pieces of sector unit structural designs are so that the installation and removal of internal head cover 2 at circumference, each sector unit forms overall internal head cover 2 by distinguish face 21 split of internal head cover 2.
Cylindrical valve of water turbine layout of the present utility model, it possesses above-mentioned water-turbine top cover structure, the servomotor 6 of described cylindrical valve is arranged on outer top cover 1 by bolt, as depicted in figs. 1 and 2, the valve rod 7 of described servomotor 6 is connected with cylindrical shell 8 through contraction chamber 4, described cylindrical shell 8 is positioned between seat ring 3 and outer top cover 1, is provided with sealing mechanism on cylindrical shell between cylindrical shell 8 and outer top cover 1.
in the present embodiment, on cylindrical shell, sealing mechanism structure as shown in Figure 3, comprise the sealing strip 9 being arranged at cylindrical shell 8 radial direction and the upper Sealing 10 being arranged at flexibility on outer top cover 1, the outer rim of described outer top cover 1 lower end surface is provided with groove, described upper Sealing 10 is arranged in groove by retaining ring 11, the outward edge inlay card of upper Sealing 10 is in the ring of retaining ring 11, and upper Sealing 10 and retaining ring 11 all extend outer top cover 1 outer side wall, and described sealing strip 9 closes upper Sealing 10 and seals.
in the present embodiment, sealing strip 9 is horizontal edge, is to be formed by cylindrical shell 8 overall processing; Described upper Sealing 10 is provided with outside top cover 1 and rolls oblique sealing lip limit 101, as shown in Figure 4, described sealing strip 9 is sealed by sealing lip limit 101 phase pressing, being designed with like this is beneficial to improves stressed in sealing strip 9 bonding processes of upper Sealing 10, improve the reliability of serviceability and sealing, the outside top cover 1 in sealing lip limit 101 rolls and tiltedly makes under the effect of hydraulic pressure, make sealing lip limit 101 be adjacent to mutually with sealing strip 9 more closely in addition, and better sealing is convenient to higher than retaining ring 11 in the sealing lip limit 101 of described upper Sealing 10; Sealing between upper Sealing 10 and outer top cover 1 groove floor is realized by the flexibility of upper Sealing 10 itself on the one hand, annular seal bar 102 assistant reinforcements that the surface that contacts with outer top cover 1 of going up Sealing 10 is in addition provided with integrative-structure seal, two annular seal bars 102 are set in this enforcement, and lay respectively at the inside and outside ring position of the connection clamping bolt between retaining ring 11 and outer top cover 1, this connection clamping bolt designs for countersunk screw, and the even circumferential along outer top cover 1 distributes; The bottom surface of retaining ring 11 flushes with outer top cover 1 lower end surface in addition.
in the present embodiment, be realize pressing seal by being arranged on base ring 12 flexible lower seal 13 between cylindrical shell 8 lower end and base ring 12, base ring 12 surface is provided with high strength alloy layer, as shown in Figure 5.
Cylindrical valve of water turbine layout of the present utility model, the lower end surface of described outer top cover 1 flushes with the lower end surface of internal head cover 2, for ensureing the degree of flushing of two lower end surfaces, outer top cover 1 can be connected with internal head cover 2 is the processing carrying out end face after an entirety again, the movable guide vane 14 of water turbine is arranged at the position, lower end surface of outer top cover 1, internal head cover 2, described movable guide vane 14 and the lower end surface Spielpassung of outer top cover 1, internal head cover 2, be provided with wicket gate seal part between Spielpassung face.In this enforcement, the rotating shaft of described movable guide vane 14 is arranged at the position, lower end surface of internal head cover 2, the rotating shaft of movable guide vane 14 is connected with movable guide vane servomotor through internal head cover 2, described wicket gate seal part is the end face being embedded at movable guide vane 14, wicket gate seal part is arranged along the chord length direction of movable guide vane 14, the sealing of wicket gate seal part can seal for angle, the structure such as plane sealing or cylinder sealing, and the rotating shaft position of movable guide vane 14 is also provided with the rotating shaft sealing circle of ring-type in addition.
Cylindrical valve of water turbine layout of the present utility model, realizes motive sealing by comb between the runner 15 of described internal head cover 2 and water turbine and coordinates.
Water turbine of the present utility model, have employed above-mentioned cap structure and the design of cylindrical valve layout.
water-turbine top cover structure of the present utility model, compared to traditional integral formula design of cover, adopts the split-type design of outer top cover and internal head cover cleverly, and the maintenance function for cylindrical valve provides the foundation condition; Described cylindrical valve of water turbine layout, the servomotor of cylindrical valve is arranged on outer top cover, overcome the shortcoming that servomotor must be pulled down by conventional mounting design in maintenance, ensure that the running ability of cylindrical valve in unit maintenance, between the cylindrical shell of cylindrical valve and outer top cover, Seal Design can ensure the high sealing performance of cylindrical shell in addition, and the outer top seal design after improving in addition also improves the reliability of sealability and sealing.
described cylindrical valve of water turbine is used for maintenance process operation as follows: cylindrical valve and the movable guide vane of directly closing unit to be detected, then generator amature, internal head cover, runner etc. are removed carries out unit maintenance, and will water discharge in aqueduct and spiral case.Based on water-turbine top cover structure and the design of cylindrical valve cylindrical valve of water turbine layout, compared to the mount scheme of traditional cylindrical valve at water turbine set, while the emergency closing function that cylindrical valve is had in unit running, also there is the ability being applied to maintenance process, cylindrical valve be applied to maintenance process and there is following huge advantage:
(1) sealability and the high reliability of cylindrical valve excellence is utilized, the effect of the water blocked in aqueduct and spiral case is played in maintenance, making before overhauling need not water in emptying aqueduct and spiral case, the utilization ratio of effective raising water resources, save the water discharge time before maintenance, it further reduces the filling time in the rear aqueduct of maintenance and spiral case, thus the Maintenance and Repair greatly reducing power station are consuming time;
(2) particularly in the power station of a pipe multimachine breeches pipe diversion patten's design, cylindrical valve is as the Functional Design of service valve, make it possible to treat maintenance unit under other unit work prerequisites and carry out maintenance down operation not affecting, overcome the shortcoming that existing design maintenance other units of unit must be shut down simultaneously, greatly reduce the unit maintenance cost in power station;
(3) cylindrical valve is as the Functional Design of service valve, compared to arranging valve at aqueduct for the technological scheme of overhauling, enormously simplify design, saving engineering construction cost and equipment cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a water-turbine top cover structure, it is characterized in that: described top cover comprises outer top cover (1) and internal head cover (2), described outer top cover (1) is arranged on the seat ring (3) of water turbine, form the contraction chamber (4) of cylindrical valve cylindrical shell between outer top cover (1) and seat ring (3), described internal head cover (2) is arranged on outer top cover (1).
2. water-turbine top cover structure as claimed in claim 1, is characterized in that: the lower end surface of described outer top cover (1) flushes with the lower end surface of internal head cover (2).
3. water-turbine top cover structure as claimed in claim 2, is characterized in that: the junction of described outer top cover (1) lower end and internal head cover (2) lower end is provided with the first Sealing (5).
4. a cylindrical valve of water turbine layout, is characterized in that: comprise water-turbine top cover structure as claimed in claim 1, and the servomotor (6) of described cylindrical valve is arranged on outer top cover (1).
5. cylindrical valve of water turbine layout as claimed in claim 4, it is characterized in that: the valve rod (7) of described servomotor (6) is connected with cylindrical shell (8) through contraction chamber (4), described cylindrical shell (8) is positioned between seat ring (3) and outer top cover (1), is provided with sealing mechanism on cylindrical shell between cylindrical shell (8) and outer top cover (1).
6. cylindrical valve of water turbine layout as claimed in claim 5, it is characterized in that: on described cylindrical shell, sealing mechanism comprises the upper Sealing (10) being arranged at the radial sealing strip (9) of cylindrical shell (8) and being arranged at outer top cover (1), the outer rim of described outer top cover (1) lower end surface is provided with groove, described upper Sealing (10) is arranged in groove by retaining ring (11), upper Sealing (10) and retaining ring (11) all extend outer top cover (1) outer side wall, and described sealing strip (9) seals with upper Sealing (10) phase pressing.
7. cylindrical valve of water turbine layout as claimed in claim 6, is characterized in that: described upper Sealing (10) is provided with the sealing lip limit (101) of inclination, and described sealing strip (9) seals with sealing lip limit (101) phase pressing.
8. cylindrical valve of water turbine layout as claimed in claim 4, it is characterized in that: the lower end surface of described outer top cover (1) flushes with the lower end surface of internal head cover (2), the movable guide vane (14) of water turbine is arranged at the position, lower end surface of outer top cover (1) and internal head cover (2), described movable guide vane (14) and this lower end surface Spielpassung, be provided with wicket gate seal part between Spielpassung face.
9. cylindrical valve of water turbine layout as claimed in claim 4, is characterized in that: between the runner (15) of described internal head cover (2) and water turbine, motive sealing coordinates.
10. a water turbine, is characterized in that: adopt the cap structure as described in any one of claims 1 to 3, or adopts the cylindrical valve layout as described in any one of claim 4 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052225.1U CN204532662U (en) | 2015-01-26 | 2015-01-26 | A kind of water-turbine top cover, cylindrical valve layout and water turbine thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520052225.1U CN204532662U (en) | 2015-01-26 | 2015-01-26 | A kind of water-turbine top cover, cylindrical valve layout and water turbine thereof |
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| CN204532662U true CN204532662U (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612883A (en) * | 2015-01-26 | 2015-05-13 | 东方电气集团东方电机有限公司 | Water turbine head cover structure, water turbine cylindrical valve arrangement structure and water turbine |
| CN105971805A (en) * | 2016-06-21 | 2016-09-28 | 中国水利水电科学研究院 | Integrated francis type water turbine-generator unit for regulating flow through cylindrical valve |
-
2015
- 2015-01-26 CN CN201520052225.1U patent/CN204532662U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612883A (en) * | 2015-01-26 | 2015-05-13 | 东方电气集团东方电机有限公司 | Water turbine head cover structure, water turbine cylindrical valve arrangement structure and water turbine |
| CN105971805A (en) * | 2016-06-21 | 2016-09-28 | 中国水利水电科学研究院 | Integrated francis type water turbine-generator unit for regulating flow through cylindrical valve |
| CN105971805B (en) * | 2016-06-21 | 2018-05-29 | 中国水利水电科学研究院 | A kind of self-contained Francis hydroturbine generator set using tubular valve regulating flow |
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