CN204878978U - Hydraulic drive system of extra -large -size reservoir atmospheric valve - Google Patents

Hydraulic drive system of extra -large -size reservoir atmospheric valve Download PDF

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Publication number
CN204878978U
CN204878978U CN201520535471.2U CN201520535471U CN204878978U CN 204878978 U CN204878978 U CN 204878978U CN 201520535471 U CN201520535471 U CN 201520535471U CN 204878978 U CN204878978 U CN 204878978U
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China
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valve
hydraulic
output terminal
connects
hydraulic jack
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CN201520535471.2U
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Inventor
胡新益
刘学知
罗华
牛彬
王桥民
郭铁桥
张北宁
陈磊
吴红光
马雪峰
王国勤
刘九
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Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute
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Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute
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Abstract

The utility model discloses a hydraulic drive system of extra -large -size reservoir atmospheric valve. It including installs on the atmospheric valve valve body a plurality of hydraulic cylinder with can drive the hydraulic system that a plurality of hydraulic cylinder moved simultaneously, hydraulic system includes oil tank, motor oil pump, energy storage ware, PLC controlling means and hydraulic control return circuit, dynamo oil pumping over incoming end is connected with the oil tank, and energy storage ware input is connected to dynamo oil pumping over output, energy storage ware output connection hydraulic control return circuit input, a plurality of hydraulic cylinder are connected to hydraulic control return circuit output, a plurality of hydraulic cylinder, output connection hydraulic control return circuit are connected to PLC controlling means's input. The utility model discloses an adopt hydraulic system to control the size that hydraulic cylinder drove the unloading rivers of atmospheric valve, the atress is more stable when making the atmospheric valve open and close, can be applied to the unloading of various big -and -middle -sized reservoirs, and the range of application is more extensive.

Description

A kind of hydraulic driving system of super sized type reservoir atmospheric valve
Technical field
The utility model belongs to Hydraulic and Hydro-Power Engineering reservoir atmospheric valve field, is specifically related to a kind of hydraulic driving system of super sized type reservoir atmospheric valve.
Background technique
The reservoir of Hydraulic and Hydro-Power Engineering needs to arrange emptying device usually, and atmospheric valve is a conventional technological means, utilizes atmospheric valve can fast and safely emptying by reservoir.
The atmospheric valve of prior art uses worm and gear drive unit to drive usually.The Chinese utility model patent of " fixing taper atmospheric valve " by name that the patent No. is " CN202023986U " describes a kind of taper atmospheric valve for reservoir emptying, this structure comprises a moveable sleeve pipe, flow deflecting cone is provided with in sleeve pipe, moving forward and backward by sleeve pipe, change the pore size between flow deflecting cone, control the size of emptying current.Mobile sleeve pipe moves under the driving of drive unit.This model utility is fixed taper atmospheric valve and is had overall structure simply, lightweight, the features such as cost is low.But also there is following problem in this structure:
1, the opening and closing of atmospheric valve are realized by a set of worm and gear, no problem for middle-size and small-size fixing taper atmospheric valve application, but be applied to diameter when being greater than the large-scale atmospheric valve of 2.2m, the worm and gear of mobile sleeve pipe movement is driven only to have a set of, mobile sleeve pipe stressed extremely uneven, can produce the moment tilted in sleeve pipe moving process, worm and gear is easy to torsional deformation and damages.
2, in addition when reservoir level is darker, worm and gear driving force too little being difficult to opens mitre velve.
In sum, the worm and gear driving system structure of the atmospheric valve of prior art is only applicable to middle-size and small-size fixing taper atmospheric valve.Be applied to diameter be greater than 2.2m and hydraulic pressure be greater than the super sized type atmospheric valve of 90m time, there is worm and gear be easy to torsional deformation and damage, cause atmospheric valve can not open and close and serious accident occurs, therefore need to develop the driving system structure of the high super sized type reservoir atmospheric valve of a kind of Safety performance that can be applied to various large and middle reservoirs.
Model utility content
The purpose of this utility model is exactly the deficiency existed to solve above-mentioned background technology, provides the hydraulic driving system of the super sized type reservoir atmospheric valve that a kind of Safety performance that can be applied to various large and middle reservoirs is high.
The technical solution adopted in the utility model is: a kind of hydraulic driving system of super sized type reservoir atmospheric valve, comprise the multiple hydraulic jack be installed on atmospheric valve valve body and the hydraulic system that multiple hydraulic jack can be driven simultaneously to run, described hydraulic system comprises fuel tank, motor pump, accumulator, PLC control gear and the hydraulic control circuit that can control high pressure oil circulation, described motor pump input end is connected with fuel tank, motor pump output terminal connects accumulator input end by pipeline, described accumulator output terminal connecting fluid pressure-controlled loop input, described hydraulic control circuit output terminal connects multiple hydraulic jack, the input end of described PLC control gear connects multiple hydraulic jack, output terminal connects hydraulic control circuit.
Further, described hydraulic control circuit comprise by pipeline be connected in turn accumulator output terminal and multiple hydraulic jack without the solenoid directional control valve between bar oil outlet, the first one-way throttle valve and flow divider-combiner, having between bar oil outlet and solenoid directional control valve of multiple hydraulic jack is also connected with the second one-way throttle valve.
Further, described accumulator output terminal is connected with the filler opening of solenoid directional control valve by pipeline, the return opening of solenoid directional control valve connects fuel tank, and the A actuator port of solenoid directional control valve connects one end of the first one-way throttle valve, and the other end of the first one-way throttle valve connects the input end of flow divider-combiner; Multiple output terminals of described flow divider-combiner are connected without bar oil outlet respectively by pipeline and multiple hydraulic jack, the bar oil outlet that has of multiple hydraulic jack is all connected by pipeline one end with the second one-way throttle valve, and the other end of described second one-way throttle valve is connected with the B actuator port of solenoid directional control valve.
Further, described hydraulic jack is provided with the signal feedback device of the travel displacement for detecting hydraulic cylinder piston rod, the output terminal of described signal feedback device is electrically connected with the input end of PLC control gear, the control end of the output terminal electrical connection flow divider-combiner of described PLC control gear.
Further, described hydraulic control circuit also comprises cartridge valve, stop valve and pilot valve, described cartridge valve and stop valve be successively set on the output terminal of flow divider-combiner and hydraulic jack without between bar oil outlet, the control mouth of described cartridge valve connects the return opening of pilot valve, and the filler opening of described pilot valve connects accumulator output terminal.
Further, described hydraulic jack is provided with two, and two hydraulic jacks are symmetrically arranged on atmospheric valve valve body.
The beneficial effects of the utility model are:
The utility model by arranging the hydraulic jack of multiple symmetry on valve body, HYDRAULIC CONTROL SYSTEM hydraulic jack is adopted to drive the sleeve pipe on atmospheric valve to move forward and backward, control the size of emptying current, it is stressed more uniform and stable when atmospheric valve is opened and closed, solve traditional worm and gear drive when stressed larger hold flimsy problem, the utility model can be applicable to the emptying of various large and middle reservoirs, and application area is more extensive.
The utility model is run by the multiple hydraulic jack of HYDRAULIC CONTROL SYSTEM simultaneously, the unlatching of regulation and control atmospheric valve that can be more stable or closedown, avoids multiple oil cylinder not run causing the sleeve of atmospheric valve to get stuck problem simultaneously.
The operating oil pressure of this patent hydraulic driving system is 16MPa, all hydraulic balancing boom device all adopts industrial hydraulic valve member and the programmable controller of ripe extensive employing, structure is simple, have wide range of applications, be specially adapted to the emptying of large and middle reservoirs, not only can save the construction cost of reservoir, can also difficulty of construction be reduced, reduction of erection time and storage time, improve the Safety performance of reservoir emptying.Due to valve opening and closing adopt hydraulic driving, any opening degree can be opened in 0 ~ 100% aperture and discharge water, therefore can double as ecological discharging valve uses and can be used as the large medium-size station construction time flood control pass the flood period facility use, there is great promotional value.
Accompanying drawing explanation
Fig. 1 is hydraulic driving schematic diagram of the present utility model.
In figure: 1-fuel tank; 2-level meter; 3-oil purifier; 4-motor pump safety valve; 5-motor pump; 6-oil purifier; 7-accumulator; 8-solenoid directional control valve; 9-first one-way throttle valve; 10-flow divider-combiner; 11-cartridge valve; 12-stop valve; 13-oil cylinder; 14-signal feedback device; 15-second one-way throttle valve; 16-pilot valve; 17-PLC control gear; 18-accumulator safety valve; 19-liquid level sensor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form restriction to the utility model.
As shown in Figure 1, the hydraulic driving system of atmospheric valve of the present utility model comprises the multiple hydraulic jacks 13 be installed on atmospheric valve valve body and the hydraulic system that multiple hydraulic jack 13 can be driven simultaneously to run, described hydraulic system comprises fuel tank 1, motor pump 5, accumulator 7, PLC control gear 17 and the hydraulic control circuit that can control high pressure oil circulation, described motor pump 5 input end is connected with fuel tank 1, motor pump 5 output terminal connects accumulator 7 input end by pipeline, described accumulator 7 output terminal connecting fluid pressure-controlled loop input, described hydraulic control circuit output terminal connects multiple hydraulic jack, the input end of described PLC control gear connects multiple hydraulic jack, output terminal connects hydraulic control circuit.The input of motor pump 5, output pipeline are also respectively equipped with oil purifier 3 and oil purifier 6, and oil purifier is used for the impurity in filtration high pressure oil, ensures that hydraulic work system is more smooth and easy.The output terminal of motor pump 5 and be also respectively equipped with safety valve 4 and safety valve 18 between the output terminal of accumulator 7 and fuel tank 1.Fuel tank 1 is provided with level meter 2 and liquid level sensor 19, is convenient to staff and understands oil mass in fuel tank at any time.
HYDRAULIC CONTROL SYSTEM hydraulic jack 13 is adopted to drive the sleeve pipe on atmospheric valve to move forward and backward, control the size of emptying current, stressed more uniform and stable when atmospheric valve is opened and closed, solve traditional worm and gear drive when stressed larger hold flimsy problem.Run by the multiple hydraulic jack 13 of HYDRAULIC CONTROL SYSTEM, the unlatching of regulation and control atmospheric valve that can be more stable or closedown simultaneously simultaneously, avoid multiple oil cylinder not run causing the sleeve of atmospheric valve to get stuck problem simultaneously.Super sized type reservoir atmospheric valve hydraulic driving system adopts high oil pressure hydraulic driving, operating oil pressure is 16MPa, all hydraulic balancing boom device all adopts industrial hydraulic valve member and the programmable controller of ripe extensive employing, structure is simple, fabricating cost is low, oil hydraulic cylinder adopts industrial oil cylinder, accumulator adopts bag type accumulator, inflated with nitrogen in leather bag.After adopting bladder type hydropneumatic accumulator, even if station service disappears, still can valid function atmospheric valve.
Hydraulic control circuit comprise by pipeline be connected in turn accumulator output terminal and multiple hydraulic jack without solenoid directional control valve 8, first one-way throttle valve 9 between bar oil outlet and flow divider-combiner 10, having between bar oil outlet and solenoid directional control valve 8 of multiple hydraulic jack 13 is also connected with the second one-way throttle valve 15.By the flow regulating the throttling cross-sectional sizes of one-way throttle valve to regulate high pressure oil, thus regulate the speed of hydraulic cylinder piston rod motion, the switching speed reaching valve body is adjustable.Flow divider-combiner 10 can make the motion of multiple hydraulic jack keep synchronous.
Particularly, accumulator 7 output terminal is connected by the filler opening of pipeline with solenoid directional control valve 8, the return opening of solenoid directional control valve 8 connects fuel tank 1, the A actuator port of solenoid directional control valve 8 connects one end of the first one-way throttle valve 9, and the other end of the first one-way throttle valve 9 connects the input end of flow divider-combiner 10; Multiple output terminals of described flow divider-combiner 10 are connected without bar oil outlet 13.1 respectively by pipeline and multiple hydraulic jack 13, the bar oil outlet 13.2 that has of multiple hydraulic jack 13 is all connected by pipeline one end with the second one-way throttle valve 15, and the described the other end of the second one-way throttle valve 15 is connected with the B actuator port of solenoid directional control valve 8.
Hydraulic control circuit also comprises cartridge valve 11, stop valve 12 and pilot valve 16, described cartridge valve 11 and stop valve 12 be successively set on the output terminal of flow divider-combiner 10 and hydraulic jack 13 without between bar oil outlet, the control mouth of described cartridge valve 12 connects the return opening of pilot valve 16, and the filler opening of described pilot valve 16 connects accumulator 7 output terminal.
Hydraulic jack 13 is provided with the signal feedback device 14 of the travel displacement for detecting hydraulic cylinder piston rod, the output terminal of described signal feedback device 14 is electrically connected with the input end of PLC control gear 17, the control end of the output terminal electrical connection flow divider-combiner 10 of described PLC control gear 17.Signal feedback device 14 is Linear displacement transducer, as feedback means, the travel displacement detecting hydraulic cylinder piston rod or the displacement of guide rod be connected with piston rod, the signal of detection is converted to continuous print digital output to PLC control gear 17, the PLC control gear of acknowledge(ment) signal automatically by its difference amount and establish synchronization accuracy value to compare in it and control each rate of discharge of flow divider-combiner, thus achieves and controls the high-precise synchronization of multiple hydraulic jack at any time.Flow divider-combiner adopts high accuracy number synchronous valve, and control accuracy is higher.
Hydraulic jack 13 is provided with two, and two hydraulic jacks are symmetrically arranged on atmospheric valve valve body.During work, run by HYDRAULIC CONTROL SYSTEM two hydraulic jacks simultaneously, stressed more uniform and stable when atmospheric valve is opened and closed, avoid multiple oil cylinder not run causing the sleeve of atmospheric valve to get stuck problem simultaneously.
The working principle of the utility model hydraulic driving system is: before control atmospheric valve opens or cuts out, first by motor pump 5, the high pressure oil in fuel tank 1 is stored in accumulator 7, after the pressure of accumulator 7 mesohigh oil reaches rating value, motor pump 5 quits work; When high pressure oil underpressure in accumulator 7, motor pump 5 does work again, so repeatedly.When setting cylinder piston rod is released, atmospheric valve cuts out, during retraction, atmospheric valve is opened, when needing control atmospheric valve unlatching or close, high-pressure oil flow in accumulator 7 is to solenoid directional control valve 8, the high pressure oil flowed out when solenoid directional control valve 8 flows through the first one-way throttle valve 9 by pipeline, flow divider-combiner 10, cartridge valve 11, stop valve 12, finally flow to hydraulic jack 13 without bar oil outlet time, the piston rod of hydraulic jack 13 is released, the valve body be connected with hydraulic jack is driven to close, the complete high pressure oil that does work then is back to fuel tank 1 by the bar oil outlet that has of oil cylinder through the second one-way throttle valve 15 and solenoid directional control valve 8, otherwise the high pressure oil flowed out when solenoid directional control valve 8 flows through the second one-way throttle valve 15 by pipeline, finally flow to hydraulic jack 13 have a bar oil outlet time, the piston rod of hydraulic jack 13 is retracted, drive the valve body that is connected with oil cylinder to open, the complete high pressure oil that does work is back to fuel tank 1 without bar oil outlet through stop valve 12, cartridge valve 11, flow divider-combiner 10, first one-way throttle valve 9 and solenoid directional control valve 8 then by 13 hydraulic jacks, this completes the opening and closing campaign of whole valve body.Whole hydraulic control process can ensure that atmospheric valve is opened any opening degree and discharged water in 0 ~ 100% aperture, therefore can double as ecological discharging valve use and can be used as the large medium-size station construction time flood control pass the flood period facility use, there is great promotional value
The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.

Claims (6)

1. the hydraulic driving system of a super sized type reservoir atmospheric valve, it is characterized in that: comprise the multiple hydraulic jacks (13) be installed on atmospheric valve valve body and the hydraulic system that multiple hydraulic jack can be driven simultaneously to run, described hydraulic system comprises fuel tank (1), motor pump (5), accumulator (7), PLC control gear (17) and the hydraulic control circuit of high pressure oil circulation can be controlled, described motor pump (5) input end is connected with fuel tank (1), motor pump (5) output terminal connects accumulator (7) input end by pipeline, described accumulator (7) output terminal connecting fluid pressure-controlled loop input, described hydraulic control circuit output terminal connects multiple hydraulic jack (13), the input end of described PLC control gear (17) connects multiple hydraulic jack (13), output terminal connects hydraulic control circuit.
2. the hydraulic driving system of a kind of super sized type reservoir atmospheric valve according to claim 1, it is characterized in that: described hydraulic control circuit comprise by pipeline be connected in turn accumulator (7) output terminal and multiple hydraulic jack (13) without the solenoid directional control valve (8) between bar oil outlet, the first one-way throttle valve (9) and flow divider-combiner (10), having between bar oil outlet and solenoid directional control valve (8) of multiple hydraulic jack (13) is also connected with the second one-way throttle valve (15).
3. the hydraulic driving system of a kind of super sized type reservoir atmospheric valve according to claim 2, it is characterized in that: described accumulator (7) output terminal is connected by the filler opening of pipeline with solenoid directional control valve (8), the return opening of solenoid directional control valve (8) connects fuel tank (1), the A actuator port of solenoid directional control valve (8) connects one end of the first one-way throttle valve (9), and the other end of the first one-way throttle valve (9) connects the input end of flow divider-combiner (10); Multiple output terminals of described flow divider-combiner (1) are connected without bar oil outlet respectively by pipeline and multiple hydraulic jack (13), the bar oil outlet that has of multiple hydraulic jack (13) is all connected by pipeline one end with the second one-way throttle valve (15), and the other end of described second one-way throttle valve (15) is connected with the B actuator port of solenoid directional control valve (8).
4. the hydraulic driving system of a kind of super sized type reservoir atmospheric valve according to claim 2, it is characterized in that: described hydraulic jack (13) is provided with the signal feedback device (14) of the travel displacement for detecting hydraulic cylinder piston rod, the output terminal of described signal feedback device (14) is electrically connected with the input end of PLC control gear (17), the control end of output terminal electrical connection flow divider-combiner (10) of described PLC control gear (17).
5. the hydraulic driving system of a kind of super sized type reservoir atmospheric valve according to claim 2, it is characterized in that: described hydraulic control circuit also comprises cartridge valve (11), stop valve (12) and pilot valve (16), described cartridge valve (11) and stop valve (12) be successively set on the output terminal of flow divider-combiner (10) and hydraulic jack (13) without between bar oil outlet, the control mouth of described cartridge valve (11) connects the return opening of pilot valve (16), the filler opening of described pilot valve (16) connects accumulator (7) output terminal.
6. the hydraulic driving system of a kind of super sized type reservoir atmospheric valve according to claim 1, it is characterized in that: described hydraulic jack (13) is provided with two, two hydraulic jacks are symmetrically arranged on atmospheric valve valve body.
CN201520535471.2U 2015-07-22 2015-07-22 Hydraulic drive system of extra -large -size reservoir atmospheric valve Active CN204878978U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105952947A (en) * 2016-06-30 2016-09-21 张家港市艾罗执行器有限公司 Gear pump control type electrohydraulic linkage actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105952947A (en) * 2016-06-30 2016-09-21 张家港市艾罗执行器有限公司 Gear pump control type electrohydraulic linkage actuator

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