CN203176383U - Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system - Google Patents

Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system Download PDF

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Publication number
CN203176383U
CN203176383U CN2012204127667U CN201220412766U CN203176383U CN 203176383 U CN203176383 U CN 203176383U CN 2012204127667 U CN2012204127667 U CN 2012204127667U CN 201220412766 U CN201220412766 U CN 201220412766U CN 203176383 U CN203176383 U CN 203176383U
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CN
China
Prior art keywords
sealing
valve
double
maintenance
drive
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Expired - Fee Related
Application number
CN2012204127667U
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Chinese (zh)
Inventor
袁邦
张璇
柳孝清
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CHINA VALVE TECHNOLOGY (CHANGSHA) VALVE CO LTD
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CHINA VALVE TECHNOLOGY (CHANGSHA) VALVE CO LTD
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Priority to CN2012204127667U priority Critical patent/CN203176383U/en
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Publication of CN203176383U publication Critical patent/CN203176383U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The utility model discloses a double-seal turbine water inlet butterfly valve and a double-seal turbine water inlet valve system. The double-seal turbine water inlet butterfly valve is composed of the following components: a valve body, a valve shaft, a valve plate, an operating mechanism, a working sealing pair and a maintenance sealing pair. The operating mechanism is equipped outside the valve body and is connected with the valve plate through the valve shaft. The maintenance sealing pair comprises a movable sealing base and an oil cylinder which are connected. The oil cylinder can drive the movable sealing base to move along the axis of the pipeline for realizing maintenance sealing input and release. The maintenance sealing pair has the following advantages: simple machining, excellent sealing performance and more reliable driving mode. State indication for input and release of the maintenance sealing pair is definite. The maintenance sealing pair is also provided with a mechanical locking member and a hydraulic lock for preventing leakage caused by accident in sealing pair maintenance, thereby improving double-seal operation reliability. The utility model further discloses a turbine water inlet valve system.

Description

A kind of double-sealing water turbine inlet butterfly valve and double-sealing hydroturbine water intake valve system
Technical field
The utility model relates to butterfly valve, relates in particular to a kind of double-sealing water turbine inlet butterfly valve, also relates to a kind of hydroturbine water intake valve system.
Background technique
Along with socioeconomic continuous development, the demand of electric energy is increased day by day, hydroelectric power plant is just being brought into play more and more important effect.Water turbine can be with the mechanical energy of transformation of energy for rotating of current, output torque, thus drive generator for electricity generation, be the visual plant of hydroelectric power plant.Inlet valve blocks the valve of current as inlet, is the critical component in the water turbine, and the performance of water turbine is had material impact.
In the prior art, the double-sealing water turbine inlet butterfly valve is installed on the penstock before water power plant or the pumped storage power station spiral case inlet.When water turbine need overhaul, close inlet valve, block hydroturbine water intake; When water wheels unit speed control system breaks down, generating unit speed is elevated under the situation of setting valve, and active water promptly closes valve, prevents that water turbine from flying ease, and the deduction and exemption water hammer guarantees unit safety, and the accident that prevents enlarges.When the water turbine group leader phase stops using, block upland water, to reduce the gap cavitation erosion damage that stator leaks and causes because leaking.The double-sealing water turbine inlet butterfly valve can be under the situation of press water before the exhaust-valve not, maintenance shaft end seal and working seal, and do not influence the normal operation of other units.
The maintenance sealing pair of existing double-sealing water turbine inlet butterfly valve generally adopts hydraulic pressure system to drive, it is to the requirement height at water source, used press water is generally provided by a high-pressure service pump and water system control cabinet, the general interior water of upstream pressure steel pipe that adopts is handled the good cleaning water source of water quality, back after filtration, in case the water quality at the water source of process filtration treatment does not reach requirement, will in the maintenance sealing system, produce incrustation scale.After producing incrustation scale, the maintenance sealing pair is in running, and the O type rubber seal on its piston ring causes leakage with regard to easy damage, brings the consequence that can't drive the maintenance sealing pair.
Therefore, provide that a kind of to overhaul the double-sealing water turbine inlet butterfly valve that sealing pair can drive by mode more reliably be the problem that those skilled in the art need solution badly.
The model utility content
The purpose of this utility model provides a kind of double-sealing water turbine inlet butterfly valve, and its maintenance sealing pair can drive by reliable more mode, thereby increases operational reliability.On the basis that above-mentioned double-sealing water turbine inlet butterfly valve is provided, another purpose of the present utility model is that a kind of hydroturbine water intake valve system also is provided.
In order to realize above-mentioned first purpose, the utility model provides a kind of double-sealing water turbine inlet butterfly valve, formed by valve body, valve shaft, valve plate, operating device, working seal pair, maintenance sealing pair, operating device is arranged on the outside of valve body and is connected with valve plate by valve shaft, and described maintenance sealing pair comprises hydrodynamic reciprocating sealing seat, oil cylinder; Described hydrodynamic reciprocating sealing seat is connected with oil cylinder, and oil cylinder can drive the hydrodynamic reciprocating sealing seat and move along conduit axis, realizes input and the releasing of maintenance sealing.
Preferably, described maintenance sealing pair also comprises connecting rod, synchronizing ring, and described hydrodynamic reciprocating sealing seat is fixed together by connecting rod and synchronizing ring, and described oil cylinder is connected with synchronizing ring; Oil cylinder drives the hydrodynamic reciprocating sealing seat and moves along conduit axis by synchronizing ring, connecting rod, realizes input and the releasing of maintenance sealing.
Preferably, also comprise, can be used for connecting the connecting rod of described synchronizing ring; Described connecting rod is provided with sealing cover, and described sealing cover is fixed on the Flange Plane of upstream short tube by screw; The gap is left between its connecting rod and the hole in the described hole of passing the correspondence on the short tube flange of upstream.
Preferably, comprise also that locking screw one end is fixed on the short tube flange of upstream, the other end passes synchronizing ring, by the nut check synchronizing ring, guarantees that the maintenance sealing pair can unexpected decompression not cause leaking.
In order to realize above-mentioned second purpose, the utility model also provides a kind of hydroturbine water intake valve system, comprise hydraulic driving system, maintenance sealing drive system, electric control equipment, described electric control equipment is by being electrically connected the control system operation, also comprise above-mentioned double-sealing water turbine inlet butterfly valve, the operating device action of the described double-sealing hydroturbine water intake of described drive systems valve, the maintenance sealing pair action of the described double-sealing water turbine inlet butterfly valve of described maintenance sealing drive systems.
Preferably, described drive system is hydraulic driving system, the operating device action that described hydraulic driving system provides high pressure oil to drive described double-sealing hydroturbine water intake valve, described hydraulic driving system provides high pressure oil for described maintenance sealing drive system, described maintenance sealing drive system comprises at least one fuel cylinder driving mechanism, and described fuel cylinder driving mechanism drives the maintenance sealing pair action of described double-sealing water turbine inlet butterfly valve.
Preferably, the required pressure oil of described maintenance sealing drive system, except adopting by the used oil sources of described hydraulic driving system, also can other supporting electric oil pump or hand oil pump pressure oil is provided.
Preferably, described maintenance sealing drives pair and comprises fuel cylinder driving mechanism, in the described fuel cylinder driving mechanism oil cylinder synchronously can by synchronous distributing valve and/volume realizes synchronously.
Preferably, when described fuel cylinder driving mechanism was in parallel, oil cylinder can realize by synchronous distributing valve synchronously in the described fuel cylinder driving mechanism; When described fuel cylinder driving mechanism was connected, oil cylinder can realize synchronously by volume synchronously in the described fuel cylinder driving mechanism.
Preferably, described maintenance sealing drive system is provided with manually operated valve and synchronous distributing valve, or described maintenance sealing drive system is provided with solenoid valve, hydraulic lock and synchronous distributing valve; Described manually operated valve or electromagnetic valve maintenance sealing drop into or remove.
Compared with prior art, double-sealing water turbine inlet butterfly valve provided by the utility model, its maintenance sealing pair comprises hydrodynamic reciprocating sealing seat, oil cylinder, described hydrodynamic reciprocating sealing seat and oil cylinder link together.By in the maintenance sealing pair, the hydrodynamic reciprocating sealing seat being set, and hydrodynamic reciprocating sealing seat and oil cylinder linked together, therefore, can be by drive described hydrodynamic reciprocating sealing seat by the hydraulic jack mode, thereby can not re-use hydraulic pressure system drives, can cancel the pressure water system control section, save the cost of product.
In mode of execution further preferably, also comprise connecting rod, synchronizing ring, described hydrodynamic reciprocating sealing seat is fixed together by connecting rod and synchronizing ring; Oil cylinder drives the hydrodynamic reciprocating sealing seat and moves along conduit axis by synchronizing ring, connecting rod, realize input and the releasing of maintenance sealing, therefore, thereby can drive described synchronizing ring motion by the hydraulic jack mode and drive described hydrodynamic reciprocating sealing seat, make that input, the disengaging of maintenance sealing pair are safe and reliable, improve the operational reliability of maintenance sealing pair.
In mode of execution further preferably, also comprise, can be used for the screw rod of fixing described synchronizing ring; Described connecting rod is provided with sealing cover, and described sealing cover is fixed on the flange of upstream short tube by screw.By screw rod described synchronizing ring is locked, can prevent the unexpected pressure release of hydraulic system, the safety when guaranteeing maintenance.Between the flange of sealing cover that connecting rod arranges and upstream short tube, can adopt the plane sealing mode, fix by screw, the through hole that the flange of connecting rod and upstream short tube can be mated arranges the gap, thereby can compensate machining error, simultaneously, by screw rod screw and the locking of hydraulic lock twice, guarantee the reliability of the input of maintenance sealing pair.
On the basis that above-mentioned double-sealing water turbine inlet butterfly valve is provided, hydroturbine water intake valve system provided by the utility model compared with prior art, comprise above-mentioned double-sealing water turbine inlet butterfly valve, also comprise at least one fuel cylinder driving mechanism, thereby realize the control to the maintenance sealing pair of described double-sealing water turbine inlet butterfly valve.
In mode of execution further preferably, comprise two described fuel cylinder driving mechanisms, and be connected in parallel that described fuel cylinder driving mechanism comprises at least two double piston-rod two-way cylinders, described double piston-rod two-way cylinder is connected in series.Like this, can improve the conformity of oil cylinder stroke.
In mode of execution further preferably, described fuel cylinder driving mechanism high-pressure oil duct inlet is provided with synchronous distributing valve, can improve the hydraulic control ability, further improves the conformity of oil cylinder stroke.
In mode of execution further preferably, comprise two described fuel cylinder driving mechanisms, and be connected in parallel that described fuel cylinder driving mechanism comprises at least two single-piston rod two-way cylinders, described single-piston rod two-way cylinder is connected in parallel, and can improve the conformity of oil cylinder stroke.
In mode of execution further preferably, described maintenance sealing drive system high pressure oil is to be disposed with manually operated valve, distributing valve synchronously to the ingress, or is disposed with solenoid valve, hydraulic lock, distributing valve synchronously, realizes input and releasing that maintenance seals.
Description of drawings
Fig. 1 is the plan view of a kind of double-sealing water turbine inlet butterfly valve that the utility model proposes;
Fig. 2 is that the maintenance sealing pair of a kind of double-sealing water turbine inlet butterfly valve that the utility model proposes drops into structure graph;
Fig. 3 is the maintenance sealing pair relieving state structural drawing of a kind of double-sealing water turbine inlet butterfly valve that the utility model proposes;
Fig. 4 is the maintenance sealing pair screw rod lock state structural drawing of a kind of double-sealing water turbine inlet butterfly valve that the utility model proposes;
Fig. 5 is a kind of hydroturbine water intake valve system first embodiment's that the utility model proposes hydraulic schematic diagram;
Fig. 6 is a kind of hydroturbine water intake valve system second embodiment's that the utility model proposes hydraulic schematic diagram.
Embodiment
The purpose of this utility model provides a kind of double-sealing water turbine inlet butterfly valve, and its maintenance sealing pair can drive by reliable more mode, thereby increases operational reliability.On the basis that above-mentioned double-sealing water turbine inlet butterfly valve is provided, another purpose of the present utility model is that a kind of hydroturbine water intake valve system also is provided.
In order to make those skilled in the art understand the technical solution of the utility model better; below in conjunction with accompanying drawing the utility model is described in detail; the description of this part only is exemplary and explanatory, should any restriction not arranged to protection domain of the present utility model.
Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of be among the embodiment, a kind of double-sealing water turbine inlet butterfly valve provided by the utility model, by valve body 3, valve shaft 4, valve plate 2, operating device 5, the working seal pair, maintenance sealing pair 6 is formed, operating device 5 is arranged on the outside of valve body 3 and is connected with valve plate 2 by valve shaft 4, it is characterized in that, described maintenance sealing pair 6 comprises hydrodynamic reciprocating sealing seat 7, connecting rod 9, synchronizing ring 8, sealing cover 11, the screw rod 16 that can be used for fixing described synchronizing ring 8, nut 17, described hydrodynamic reciprocating sealing seat 7 is fixed together by connecting rod 9 and synchronizing ring 8, described sealing cover 11 is arranged on the described connecting rod 9, and described sealing cover 11 is fixed on the flange of upstream short tube by screw.By in maintenance sealing pair 6, hydrodynamic reciprocating sealing seat 7 being set, and hydrodynamic reciprocating sealing seat 7 is fixed together by connecting rod 9 and synchronizing ring 8, therefore, thereby can drive described synchronizing ring 8 motions by hydraulic jack 12 modes and drive described hydrodynamic reciprocating sealing seat 7, make that input, the disengaging of maintenance sealing pair 6 are safe and reliable, improve the operational reliability of maintenance sealing pair 6.And, do not drive owing to do not re-use hydraulic pressure system, can cancel the pressure water system control section, saved the cost of product.
Further, lock by 16 pairs of described synchronizing ring 8 of screw rod, can prevent the unexpected pressure release of hydraulic system, the safety when guaranteeing maintenance.Between the flange of sealing cover 11 that connecting rod 9 arranges and upstream short tube, can adopt the plane sealing mode, fixing by nut 17, the through hole that the flange of connecting rod 9 and upstream short tube can be mated arranges the gap, thereby can compensate machining error, simultaneously, by screw rod 16 and the locking of hydraulic lock twice, guarantee the reliability of the input of maintenance sealing pair 6.
Need to prove that the utility model does not limit sealing material, can be macromolecular materials such as rubber, also can be other metallic material, sealing material all should be within protection domain of the present utility model arbitrarily.
On the basis that above-mentioned double-sealing water turbine inlet butterfly valve is provided, the utility model also provides a kind of hydroturbine water intake valve system.
Please refer to Fig. 5 and Fig. 6.Be example with the hydraulic driving, a kind of hydroturbine water intake valve system provided by the utility model comprises hydraulic driving system, maintenance sealing drive system, control gear and above-mentioned double-sealing water turbine inlet butterfly valve, and described maintenance sealing drive system comprises two fuel cylinder driving mechanisms, control valve, solenoid valve 14 and hydraulic lock; Operating device 5 actions that described hydraulic driving system provides high pressure oil to drive described double-sealing hydroturbine water intake valve, described hydraulic driving system provides high pressure oil for described maintenance sealing drive system, maintenance sealing pair 6 actions of the described double-sealing water turbine inlet butterfly valve of described maintenance sealing drive systems, thus realization is to the control of the maintenance sealing pair 6 of described double-sealing water turbine inlet butterfly valve; Described fuel cylinder driving mechanism is connected in parallel.Among first embodiment, described fuel cylinder driving mechanism comprises two double piston-rod two-way cylinders 13, and described double piston-rod two-way cylinder 13 is connected in series, and improves the conformity of oil cylinder stroke; Among second embodiment, comprise two single-piston rod two-way cylinders 15, described single-piston rod two-way cylinder 15 is connected in parallel, and is same, can improve the conformity of oil cylinder stroke.
Need to prove that the utility model also limits the type of driving mechanism, can be hydraulic driving, also can drive for other modes; The utility model does not limit quantity and the oil cylinder quantity of fuel cylinder driving mechanism; the quantity of fuel cylinder driving mechanism and oil cylinder quantity can not be two; therefore; use other modes to drive; or, the quantity of fuel cylinder driving mechanism and oil cylinder quantity be one or more all should be within the utility model protection domain.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation and another entity or operation are made a distinction, and not necessarily require or hint these entities or the operation between exist any this reality relation or the order, and, term " comprises ", " comprise " or its any other variant is intended to contain comprising of nonexcludability, thereby make the process that comprises a series of key elements, method, which key element article or equipment not only comprise, but also comprise other key elements of clearly not listing, or also be included as this process, method, the key element that article or equipment are intrinsic.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises key element and also have other identical element.
Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.The above only is preferred implementation of the present utility model, should be understood that, because the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvement, retouching or variation, also above-mentioned technical characteristics can be made up by rights; These improve retouching, change or combination, or without improving the design of model utility and technological scheme are directly applied to other occasion, all should be considered as protection domain of the present utility model.

Claims (10)

1. double-sealing water turbine inlet butterfly valve, formed by valve body (3), valve shaft (4), valve plate (2), operating device (5), working seal pair, maintenance sealing pair (6), operating device (5) is arranged on the outside of valve body (3) and is connected with valve plate (2) by valve shaft (4), it is characterized in that, described maintenance sealing pair (6) comprises hydrodynamic reciprocating sealing seat (7), described hydrodynamic reciprocating sealing seat (7) is connected with oil cylinder (12), oil cylinder (12) can drive hydrodynamic reciprocating sealing seat (7) and move along conduit axis, realizes input and the releasing of maintenance sealing.
2. double-sealing water turbine inlet butterfly valve according to claim 1 is characterized in that, described maintenance sealing pair (6) also comprises connecting rod (9), synchronizing ring (8), and described hydrodynamic reciprocating sealing seat (7) is fixed together by connecting rod (9) and synchronizing ring (8); Oil cylinder (12) drives hydrodynamic reciprocating sealing seat (7) and moves along conduit axis by synchronizing ring (8), connecting rod (9), realizes input and the releasing of maintenance sealing.
3. double-sealing water turbine inlet butterfly valve according to claim 2 is characterized in that, also comprises, can be used for connecting the connecting rod (9) of described synchronizing ring (8); Described connecting rod (9) is provided with sealing cover (11), and described sealing cover (11) is fixed on the Flange Plane of upstream short tube by screw; The gap is left between its connecting rod (9) and the hole in the described hole of passing the correspondence on the upstream short tube flange (10).
4. double-sealing water turbine inlet butterfly valve according to claim 2, it is characterized in that, also comprise, locking screw (16) one ends are fixed on the upstream short tube flange (10), the other end passes synchronizing ring (8), by nut (17) locking synchronizing ring (8), guarantee that maintenance sealing pair (6) can unexpected decompression not cause leaking.
5. double-sealing hydroturbine water intake valve system, comprise hydraulic driving system, maintenance sealing drive system, electric control equipment, described electric control equipment is by being electrically connected the operation of control hydraulic driving system, it is characterized in that, also comprise each described double-sealing water turbine inlet butterfly valve as claim 1-2, operating device (5) action of the described double-sealing hydroturbine water intake of described hydraulic drive system drives valve, maintenance sealing pair (6) action of the described double-sealing water turbine inlet butterfly valve of described maintenance sealing drive systems.
6. double-sealing hydroturbine water intake valve system according to claim 5, it is characterized in that, described hydraulic driving system is hydraulic operation, operating device (5) action that described hydraulic driving system provides high pressure oil to drive described double-sealing hydroturbine water intake valve, described hydraulic driving system provides high pressure oil for described maintenance sealing drive system, described maintenance sealing drive system comprises at least one fuel cylinder driving mechanism, and described fuel cylinder driving mechanism drives maintenance sealing pair (6) action of described double-sealing water turbine inlet butterfly valve.
7. double-sealing hydroturbine water intake valve system according to claim 6, it is characterized in that, the required pressure oil of described maintenance sealing drive system, except adopting by the used oil sources of described hydraulic driving system, also can other supporting electric oil pump or hand oil pump pressure oil is provided.
8. double-sealing hydroturbine water intake valve system according to claim 6 is characterized in that, described maintenance sealing pair comprises fuel cylinder driving mechanism, and oil cylinder can realize synchronously by synchronous distributing valve and/or volume synchronously in the described fuel cylinder driving mechanism.
9. double-sealing hydroturbine water intake valve system according to claim 7 is characterized in that, when described fuel cylinder driving mechanism was in parallel, oil cylinder can realize by synchronous distributing valve synchronously in the described fuel cylinder driving mechanism; When described fuel cylinder driving mechanism was connected, oil cylinder can realize synchronously by volume synchronously in the described fuel cylinder driving mechanism.
10. double-sealing hydroturbine water intake valve system according to claim 5, it is characterized in that, described maintenance sealing drive system is provided with manually operated valve and synchronous distributing valve, or described maintenance sealing drive system is provided with solenoid valve (14), hydraulic lock and synchronous distributing valve; Described manually operated valve or solenoid valve (14) control maintenance sealing drops into or removes.
CN2012204127667U 2012-08-20 2012-08-20 Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system Expired - Fee Related CN203176383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012204127667U CN203176383U (en) 2012-08-20 2012-08-20 Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012204127667U CN203176383U (en) 2012-08-20 2012-08-20 Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system

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Publication Number Publication Date
CN203176383U true CN203176383U (en) 2013-09-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104864106A (en) * 2015-05-26 2015-08-26 柳州钢铁股份有限公司 Metal hard sealing butterfly valve with moving valve seat
CN106594304A (en) * 2016-12-30 2017-04-26 能发伟业铁岭阀门股份有限公司 Dual-sealing butterfly valve with overhaul sealing ring driven by servo motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104864106A (en) * 2015-05-26 2015-08-26 柳州钢铁股份有限公司 Metal hard sealing butterfly valve with moving valve seat
CN106594304A (en) * 2016-12-30 2017-04-26 能发伟业铁岭阀门股份有限公司 Dual-sealing butterfly valve with overhaul sealing ring driven by servo motor

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Granted publication date: 20130904

Termination date: 20150820