CN107152424A - A kind of accurate lifting hydraulic control system and hinge movable dam - Google Patents
A kind of accurate lifting hydraulic control system and hinge movable dam Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/36—Elevating mechanisms for vertical-lift gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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Abstract
本申请涉及合页活动坝驱动技术领域，尤其涉及一种精准升降液压控制系统及合页活动坝。该精准升降液压控制系统包括储液箱、液压泵、液压缸、进液管路、回液管路、第一阀门、第二阀门及流量传感器，液压泵的入口与储液箱连通，液压泵的出口通过进液管路与液压缸的入口连通，液压缸的出口通过回液管路与储液箱连通，进液管路和回液管路上分别设置有第一阀门和第二阀门，进液管路与回液管路中的至少一者设置有流量传感器，流量传感器用于检测流经进液管路或回液管路的液体量，从而推算出与该活塞杆连接的坝体的升降高度，提高对坝体升降高度的控制精度，实现河道内无电缆线布设的情况下对水体拦蓄及调节高度的精准控制。
The present application relates to the technical field of hinge movable dam driving, in particular to a precise lifting hydraulic control system and a hinge movable dam. The precision lifting hydraulic control system includes a liquid storage tank, a hydraulic pump, a hydraulic cylinder, a liquid inlet pipeline, a liquid return pipeline, a first valve, a second valve and a flow sensor. The inlet of the hydraulic pump is connected to the liquid storage tank. The outlet of the hydraulic cylinder communicates with the inlet of the hydraulic cylinder through the liquid inlet pipeline, and the outlet of the hydraulic cylinder communicates with the liquid storage tank through the liquid return pipeline. At least one of the liquid pipeline and the liquid return pipeline is provided with a flow sensor, and the flow sensor is used to detect the amount of liquid flowing through the liquid inlet pipeline or the liquid return pipeline, so as to calculate the flow rate of the dam connected to the piston rod. The lifting height improves the control accuracy of the lifting height of the dam body, and realizes the precise control of water storage and height adjustment without the laying of cables in the river channel.
Description
技术领域technical field
本申请涉及合页活动坝驱动技术领域，尤其涉及一种精准升降液压控制系统及合页活动坝。The present application relates to the technical field of hinge movable dam driving, in particular to a precise lifting hydraulic control system and a hinge movable dam.
背景技术Background technique
近年来，由于合页活动坝具有操作便捷，升降灵活，景观效果好等优点，因此被广泛应用于水利工程中，用于实现防洪、供水、灌溉、水力发电等功能。In recent years, due to the advantages of convenient operation, flexible lifting, and good landscape effects, the hinge movable dam has been widely used in water conservancy projects to realize functions such as flood control, water supply, irrigation, and hydropower generation.
目前，合页活动坝通常包括液压缸和坝体，通过控制液压缸伸缩，以驱动坝体升降。但由于河道内的水情复杂，液压缸和坝体上安装的用于检测自身行程或角度的传感装置及电气设备多位于水下，导致生产安装成本高，且后期设备维护困难，因此，目前通常做法是通过人工目测的方式来测量坝体的升降高度，但这种方式测量的高度精确度低，随机性较大，容易导致河道上的储水位出现较大偏差，水位调节工作需要反复动作，对于较长的坝，降低了升降效率，从而容易造成水体的浪费，加大能耗，且调节过程中出现的错误操作甚至会威胁下游的安全。At present, the hinge movable dam usually includes a hydraulic cylinder and a dam body, and the hydraulic cylinder is controlled to expand and contract to drive the dam body to rise and fall. However, due to the complex water conditions in the river, the sensor devices and electrical equipment installed on the hydraulic cylinders and dams to detect their own strokes or angles are mostly located underwater, resulting in high production and installation costs and difficulties in later equipment maintenance. Therefore, At present, the usual method is to measure the lifting height of the dam body by manual visual inspection, but the height measurement accuracy of this method is low, and the randomness is large, which is easy to cause large deviations in the water storage level on the river channel, and the water level adjustment needs to be repeated. Action, for a longer dam, reduces the lifting efficiency, which is easy to cause waste of water, increase energy consumption, and the wrong operation in the adjustment process may even threaten the safety of the downstream.
发明内容Contents of the invention
本申请提供了一种精准升降液压控制系统及合页活动坝，能够准确测量坝体的升降高度，且在河道内无需布设行程或角度传感器及其控制电缆线，并可与PLC电控系统联控，实现坝体的精准自动升降动作及任意开度自动驻坝等技术。另外，本系统可避免河道上的储水位出现人为误差，提高升降效率，以及降低发生上游河道的储水浪费或威胁下游的安全的概率。This application provides a precise lifting hydraulic control system and hinge movable dam, which can accurately measure the lifting height of the dam body, and there is no need to arrange travel or angle sensors and their control cables in the river channel, and can be connected with the PLC electronic control system Control, realize the precise automatic lifting action of the dam body and automatic dam parking at any opening degree. In addition, this system can avoid human errors in the water storage level on the river, improve the lifting efficiency, and reduce the probability of wasting water storage in the upstream river or threatening the safety of the downstream.
本申请第一方面提供了一种精准升降液压控制系统，用于合页活动坝，其包括：用于储存液体的储液箱、液压泵、液压缸、进液管路、回液管路、第一阀门、第二阀门及流量传感器，The first aspect of the present application provides a precision lifting hydraulic control system for a hinge movable dam, which includes: a liquid storage tank for storing liquid, a hydraulic pump, a hydraulic cylinder, a liquid inlet pipeline, a liquid return pipeline, The first valve, the second valve and the flow sensor,
所述液压泵的入口与所述储液箱连通，所述液压泵的出口通过所述进液管路与所述液压缸的入口连通，以使所述储液箱内的液体能够流入至所述液压缸，所述进液管路上设置有所述第一阀门，The inlet of the hydraulic pump communicates with the liquid storage tank, and the outlet of the hydraulic pump communicates with the inlet of the hydraulic cylinder through the liquid inlet line, so that the liquid in the liquid storage tank can flow into the The hydraulic cylinder, the first valve is arranged on the liquid inlet pipeline,
所述液压缸的出口通过所述回液管路与所述储液箱连通，以使所述液压缸内的液体能够流回至所述储液箱，所述回液管路上设置有所述第二阀门，The outlet of the hydraulic cylinder communicates with the liquid storage tank through the liquid return pipeline, so that the liquid in the hydraulic cylinder can flow back to the liquid storage tank, and the liquid return pipeline is provided with the second valve,
所述进液管路与所述回液管路中的至少一者设置有所述流量传感器，所述流量传感器用于检测流经所述进液管路或所述回液管路的液体量。At least one of the liquid inlet pipeline and the liquid return pipeline is provided with the flow sensor, and the flow sensor is used to detect the amount of liquid flowing through the liquid inlet pipeline or the liquid return pipeline .
优选地，所述第一阀门为截止阀或单向阀，所述第二阀门为液控单向阀。Preferably, the first valve is a stop valve or a one-way valve, and the second valve is a hydraulically controlled one-way valve.
优选地，还包括输送管路，所述进液管路和所述回液管路均与所述输送管路连通，并通过所述输送管路与所述液压缸连通。Preferably, a delivery pipeline is further included, the liquid inlet pipeline and the liquid return pipeline are both communicated with the delivery pipeline, and communicate with the hydraulic cylinder through the delivery pipeline.
优选地，还包括压力继电器和控制装置，所述压力继电器设置在所述输送管路上，并与所述控制装置通信连接。Preferably, it also includes a pressure relay and a control device, the pressure relay is arranged on the delivery pipeline and communicated with the control device.
优选地，还包括电磁截止阀，所述电磁截止阀设置在所述输送管路上，所述电磁截止阀具有第一工作状态及第二工作状态，Preferably, an electromagnetic shut-off valve is also included, the electromagnetic shut-off valve is arranged on the delivery pipeline, the electromagnetic shut-off valve has a first working state and a second working state,
在所述第一工作状态下，所述储液箱内的液体能够流入至所述液压缸内；In the first working state, the liquid in the liquid storage tank can flow into the hydraulic cylinder;
在所述第二工作状态下，所述液压缸内的液体能够流回至所述储液箱。In the second working state, the liquid in the hydraulic cylinder can flow back to the liquid storage tank.
优选地，还包括换向阀，所述换向阀安装在所述进液管路上。Preferably, a reversing valve is also included, and the reversing valve is installed on the liquid inlet pipeline.
优选地，还包括调速阀，所述回液管路和所述进液管路中的至少一者设置有所述调速阀。Preferably, a speed regulating valve is further included, and at least one of the liquid return pipeline and the liquid inlet pipeline is provided with the speed regulating valve.
优选地，还包括溢流阀，所述溢流阀的入口与所述进液管路连通，所述溢流阀的出口通过所述回液管路与所述储液箱连通。Preferably, an overflow valve is further included, the inlet of the overflow valve communicates with the liquid inlet pipeline, and the outlet of the overflow valve communicates with the liquid storage tank through the liquid return pipeline.
优选地，还包括应急泄压管和泄压截止阀，所述应急泄压管的一端与所述液压缸连通，所述应急泄压管的另一端与所述储液箱连通，所述泄压截止阀设置在所述应急泄压管上。Preferably, it also includes an emergency pressure relief pipe and a pressure relief cut-off valve, one end of the emergency pressure relief pipe communicates with the hydraulic cylinder, the other end of the emergency pressure relief pipe communicates with the liquid storage tank, and the emergency pressure relief pipe communicates with the hydraulic cylinder. A pressure cut-off valve is arranged on the emergency pressure relief pipe.
本申请第二方面还提供了一种合页活动坝，其包括坝体及上述任一项所述的精准升降液压控制系统，所述坝体与所述液压缸中的活塞杆连接，所述精准升降液压控制系统能够驱动所述坝体进行升降运动。The second aspect of the present application also provides a hinge movable dam, which includes a dam body and the precise lifting hydraulic control system described in any one of the above, the dam body is connected with the piston rod in the hydraulic cylinder, and the The precise lifting hydraulic control system can drive the dam body to carry out lifting movement.
本申请提供的技术方案可以达到以下有益效果：The technical solution provided by the application can achieve the following beneficial effects:
本申请所提供的精准升降液压控制系统，在进液管路与回液管路中的至少一者上设置有流量传感器，通过该流量传感器检测流经进液管路或回液管路的液体量，然后通过检测到的液体量可以推算出液压缸中的活塞杆的伸缩高度，从而可以准确得出与该活塞杆连接的坝体的升降高度，实现对液压缸行程、驻坝高度等关键参数的测量及控制。其中，该精准升降液压控制系统可与PLC(Programmable Logic Controller，可编程逻辑控制器)电气控制系统实现联合控制，实现全部坝体的精准自动化升降及任意开度自动驻坝。该精准升降液压控制系统大大提升了坝体升降高度的精度和自动化程度，并且无须在河道中布设任何传感装置及电气设备，极大地降低了对河道内设备的管理维护难度，进一步提高了坝体的升降效率，降低能耗，避免河道上的储水位出现严重误差，从而降低发生上游河道的储水浪费或威胁下游的安全的概率。The precision lifting hydraulic control system provided in this application is provided with a flow sensor on at least one of the liquid inlet pipeline and the liquid return pipeline, and the flow sensor detects the liquid flowing through the liquid inlet pipeline or the liquid return pipeline The volume, and then the telescopic height of the piston rod in the hydraulic cylinder can be calculated by the detected liquid volume, so that the lifting height of the dam body connected to the piston rod can be accurately obtained, and the key points such as the stroke of the hydraulic cylinder and the height of the dam can be realized. Parameter measurement and control. Among them, the precise lifting hydraulic control system can realize joint control with the PLC (Programmable Logic Controller, programmable logic controller) electrical control system to realize precise automatic lifting of all dam bodies and automatic dam parking at any opening. The precision lifting hydraulic control system greatly improves the accuracy and automation of the dam lifting height, and does not need to install any sensor devices and electrical equipment in the river, which greatly reduces the difficulty of management and maintenance of equipment in the river, and further improves the dam. Improve the lifting efficiency of the body, reduce energy consumption, and avoid serious errors in the water storage level on the river, thereby reducing the probability of wasting water storage in the upstream river or threatening the safety of the downstream.
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are not restrictive of the application.
附图说明Description of drawings
图1为本申请实施例所提供的精准升降液压控制系统的整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the precision lifting hydraulic control system provided by the embodiment of the present application.
附图标记：Reference signs:
10-储液箱；10 - liquid storage tank;
11-液压泵；11 - hydraulic pump;
12-进液管路；12-inlet pipeline;
13-回液管路；13 - liquid return pipeline;
14-截止阀；14-stop valve;
15-单向阀；15 - one-way valve;
16-液控单向阀；16-hydraulic control check valve;
17-流量传感器；17 - flow sensor;
18-输送管路；18 - delivery pipeline;
19-压力继电器；19 - pressure switch;
20-电磁截止阀；20-Electromagnetic stop valve;
21-换向阀；21-reversing valve;
22-双向调速阀；22-two-way speed control valve;
23-溢流阀；23 - relief valve;
24-应急泄压管；24 - emergency pressure relief pipe;
25-泄压截止阀；25-Pressure relief stop valve;
26-液压缸；26-hydraulic cylinder;
260-活塞杆。260 - piston rod.
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.
具体实施方式detailed description
下面通过具体的实施例并结合附图对本申请做进一步的详细描述。The present application will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.
如图1所示，本申请实施例提供了一种精准升降液压控制系统，其应用于合页活动坝，该精准升降液压控制系统能够驱动合页活动坝的坝体进行升降运动。As shown in Figure 1, the embodiment of the present application provides a precision lifting hydraulic control system, which is applied to a hinged movable dam. The precise lifting hydraulic control system can drive the dam body of the hinged movable dam to perform lifting movement.
此精准升降液压控制系统可包括用于储存液体的储液箱10、液压泵11、液压缸26、进液管路12、回液管路13、第一阀门及第二阀门。该储液箱10内存储的液体通常为液压油，液压泵11的入口与储液箱10连通，且液压泵11的出口通过进液管路12与液压缸26的入口连通，以使储液箱10内的液体能够流入至液压缸26。由于该液压缸26通常位于坝体下方，且该液压缸26的活塞杆260与坝体连接，因此，在液体流入至液压缸26内时能够驱使液压缸26带动坝体升起。其中，该进液管路12上设置有第一阀门，该第一阀门用于控制进液管路12的通断状态。而液压缸26的出口通过回液管路13与储液箱10连通，以使液压缸26内的液体能够流回至储液箱10，从而能够带动坝体下降。其中，该回液管路13上设置有第二阀门，该第二阀门用于控制回液管路13的通断状态。The precision lifting hydraulic control system may include a liquid storage tank 10 for storing liquid, a hydraulic pump 11 , a hydraulic cylinder 26 , a liquid inlet pipeline 12 , a liquid return pipeline 13 , a first valve and a second valve. The liquid stored in the liquid storage tank 10 is usually hydraulic oil, the inlet of the hydraulic pump 11 communicates with the liquid storage tank 10, and the outlet of the hydraulic pump 11 communicates with the inlet of the hydraulic cylinder 26 through the liquid inlet line 12, so that the liquid storage The liquid in the tank 10 can flow into the hydraulic cylinder 26 . Since the hydraulic cylinder 26 is usually located below the dam body, and the piston rod 260 of the hydraulic cylinder 26 is connected to the dam body, the hydraulic cylinder 26 can be driven to lift the dam body when the liquid flows into the hydraulic cylinder 26 . Wherein, the liquid inlet pipeline 12 is provided with a first valve, and the first valve is used to control the on-off state of the liquid inlet pipeline 12 . The outlet of the hydraulic cylinder 26 communicates with the liquid storage tank 10 through the liquid return pipeline 13, so that the liquid in the hydraulic cylinder 26 can flow back to the liquid storage tank 10, thereby driving the dam body to descend. Wherein, the liquid return line 13 is provided with a second valve, and the second valve is used to control the on-off state of the liquid return line 13 .
具体地，上述精准升降液压控制系统还可包括流量传感器17，上述进液管路12与回液管路13中的至少一者设置有此流量传感器17，此流量传感器17用于检测流经进液管路12或回液管路13的液体量，并能够将检测到的液体量传送给控制装置，该控制装置可根据该流量传感器17检测到的液体量计算出液压缸26中的活塞杆260的伸缩高度，从而可以准确得出与该活塞杆260连接的坝体的升降高度，实现对液压缸行程、驻坝高度等关键参数的测量及控制。其中，该精准升降液压控制系统可与PLC(Programmable Logic Controller，可编程逻辑控制器)电气控制系统实现联合控制，实现全部坝体的精准自动化升降及任意开度自动驻坝。该精准升降液压控制系统大大提升了坝体升降高度的精度和自动化程度，并且无须在河道中布设任何传感装置及电气设备，极大地降低了对河道内设备的管理维护难度，进一步提高了坝体的升降效率，降低能耗，避免河道上的储水位出现严重误差，从而降低发生上游河道的储水浪费或威胁下游的安全的概率。Specifically, the above-mentioned precision lifting hydraulic control system may further include a flow sensor 17, at least one of the above-mentioned liquid inlet pipeline 12 and the liquid return pipeline 13 is provided with this flow sensor 17, and this flow sensor 17 is used to detect the The amount of liquid in the liquid line 12 or return line 13, and can transmit the detected liquid amount to the control device, which can calculate the piston rod in the hydraulic cylinder 26 according to the liquid amount detected by the flow sensor 17. 260 telescopic height, so that the lifting height of the dam body connected to the piston rod 260 can be accurately obtained, and the measurement and control of key parameters such as the stroke of the hydraulic cylinder and the height of the dam can be realized. Among them, the precise lifting hydraulic control system can realize joint control with the PLC (Programmable Logic Controller, programmable logic controller) electrical control system to realize precise automatic lifting of all dam bodies and automatic dam parking at any opening. The precision lifting hydraulic control system greatly improves the accuracy and automation of the dam lifting height, and does not need to install any sensor devices and electrical equipment in the river, which greatly reduces the difficulty of management and maintenance of equipment in the river, and further improves the dam. Improve the lifting efficiency of the body, reduce energy consumption, and avoid serious errors in the water storage level on the river, thereby reducing the probability of wasting water storage in the upstream river or threatening the safety of the downstream.
优选地，进液管路12与回液管路13均设置有上述流量传感器17，以使该精准升降液压控制系统既能够检测流经进液管路12的液体量，又能检测流经回液管路13的液体量。Preferably, both the liquid inlet pipeline 12 and the liquid return pipeline 13 are provided with the above-mentioned flow sensor 17, so that the precise lifting hydraulic control system can not only detect the amount of liquid flowing through the liquid inlet pipeline 12, but also detect the amount of liquid flowing through the return fluid pipeline. The amount of liquid in the liquid pipeline 13.
值得说明的是，由于合页活动坝通常包括多个坝体，为了能够实现多个坝体的同时驱动，该精准升降液压控制系统中可包括多个并联连接的进液管路12和多个并联连接的回液管路13，以实现多个坝体同时进行升降过程。并且为了延长精准升降液压控制系统的使用寿命，该精准升降液压控制系统中的液压泵11可设计为多个，当一个液压泵11损坏时，还有其它液压泵11能够继续工作。It is worth noting that since the hinge movable dam usually includes multiple dam bodies, in order to realize the simultaneous driving of multiple dam bodies, the precision lifting hydraulic control system may include multiple parallel-connected liquid inlet pipelines 12 and multiple The liquid return pipelines 13 connected in parallel can realize simultaneous lifting process of multiple dam bodies. And in order to extend the service life of the precise lifting hydraulic control system, the hydraulic pumps 11 in the precise lifting hydraulic control system can be designed in multiples, and when one hydraulic pump 11 is damaged, other hydraulic pumps 11 can continue to work.
在本申请的一个实施例中，上述第一阀门可为截止阀14或单向阀15，具体地，当该第一阀门为截止阀14时，该截止阀14在升坝过程中处于连通状态，从而能够使液压泵11泵取的液体通过进液管路12流入至液压缸26内，继而带动坝体上升，该截止阀14在降坝过程中处于关闭状态，避免液压缸26内的液体通过进液管路12回流至液压泵11中，导致液压泵11损坏的情况；当该第一阀门为单向阀15时，由于单向阀15只允许液体在一个方向上通过，而在反向方向上则完全关闭，因此，该单向阀15只能允许液压泵11泵取的液体通过进液管路12流入至液压缸26内，并在反向方向上，阻止液压缸26内的液体通过进液管路12流回至液压泵11，从而降低液压泵11损坏的概率。其中，该第一阀门的数量可为多个。In one embodiment of the present application, the above-mentioned first valve may be a cut-off valve 14 or a one-way valve 15, specifically, when the first valve is a cut-off valve 14, the cut-off valve 14 is in a communication state during the dam raising process , so that the liquid pumped by the hydraulic pump 11 can flow into the hydraulic cylinder 26 through the liquid inlet pipeline 12, and then drive the dam body to rise. The stop valve 14 is in a closed state during the dam lowering process to prevent the liquid in the hydraulic cylinder 26 Backflow into the hydraulic pump 11 through the liquid inlet pipeline 12, resulting in damage to the hydraulic pump 11; In the upward direction, it is completely closed. Therefore, the check valve 15 can only allow the liquid pumped by the hydraulic pump 11 to flow into the hydraulic cylinder 26 through the liquid inlet line 12, and in the reverse direction, prevent the liquid in the hydraulic cylinder 26 from flowing into the hydraulic cylinder 26. The liquid flows back to the hydraulic pump 11 through the liquid inlet pipeline 12 , thereby reducing the probability of damage to the hydraulic pump 11 . Wherein, the number of the first valves may be multiple.
而第二阀门为液控单向阀16，平时该液控单向阀16处于单向截止状态，以使回液管路13处于断开状态，即：阻止液体从液压缸26返回至储液箱10。而当向液控单向阀16施加一定压力后，可以改变液控单向阀16的截止状态，从而使液压缸26内的液体能够顺利通过回液管路13流回至储液箱10内，从而实现降坝操作。The second valve is a hydraulically controlled one-way valve 16, which is usually in a one-way cut-off state, so that the liquid return line 13 is in a disconnected state, that is, to prevent the liquid from returning to the liquid storage from the hydraulic cylinder 26. box of 10. And when a certain pressure is applied to the hydraulic control check valve 16, the cut-off state of the hydraulic control check valve 16 can be changed, so that the liquid in the hydraulic cylinder 26 can smoothly flow back to the liquid storage tank 10 through the return line 13 , so as to realize the dam lowering operation.
在本申请的一个实施例中，该精准升降液压控制系统还包括输送管路18，上述进液管路12和回液管路13均与输送管路18连通，并通过输送管路18与液压缸26连通，这样设计可降低液压缸26的结构复杂难度，具体地，可减少液压缸26上开口的数量，例如，如果进液管路12和回液管路13均单独与液压缸26连通，那么该液压缸26将分别开设有一与进液管路12连通的入口以及与回液管路13连通的出口，而本实施例中进液管路12和回液管路13均与输送管路18连通，然后再由该输送管路18与液压缸26连通，这样该液压缸26可只开设与输送管路18连通的开口，该开口既能够相当于与进液管路12连通的入口，也能够相当于与回液管路13连通的出口，降低了液压缸26的结构复杂难度。In one embodiment of the present application, the precision lifting hydraulic control system further includes a delivery pipeline 18, the above-mentioned liquid inlet pipeline 12 and liquid return pipeline 13 are both connected to the delivery pipeline 18, and through the delivery pipeline 18 and the hydraulic pressure Cylinder 26 communicates, and this design can reduce the structural complexity of hydraulic cylinder 26 difficulty, specifically, can reduce the number of openings on hydraulic cylinder 26, for example, if the liquid inlet pipeline 12 and liquid return pipeline 13 all communicate with hydraulic cylinder 26 separately , then the hydraulic cylinder 26 will respectively have an inlet communicated with the liquid inlet pipeline 12 and an outlet communicated with the liquid return pipeline 13, and in this embodiment, the liquid inlet pipeline 12 and the liquid return pipeline 13 are connected Road 18 communicates, and then the delivery pipeline 18 communicates with the hydraulic cylinder 26, so that the hydraulic cylinder 26 can only open an opening that communicates with the delivery pipeline 18, and this opening can be equivalent to the inlet that communicates with the liquid inlet pipeline 12. , can also be equivalent to the outlet communicating with the liquid return pipeline 13, which reduces the complexity and difficulty of the structure of the hydraulic cylinder 26.
其中，该精准升降液压控制系统还可包括压力继电器19和控制装置(图中未示出)，该压力继电器19设置在输送管路18上，并与控制装置通信连接。当精准升降液压控制系统驱动坝体升高到指定位置时，该压力继电器19闭合，并将坝体已经升高到指定位置的信息传送至控制装置，然后该控制装置控制液压泵11停止工作，使得该坝体保持在该指定位置。Wherein, the precision lifting hydraulic control system may further include a pressure relay 19 and a control device (not shown in the figure), the pressure relay 19 is arranged on the delivery pipeline 18 and communicated with the control device. When the precision lifting hydraulic control system drives the dam body to rise to the specified position, the pressure relay 19 is closed, and the information that the dam body has been raised to the specified position is transmitted to the control device, and then the control device controls the hydraulic pump 11 to stop working, Keep the dam body at the designated position.
可选地，该精准升降液压控制系统还可包括电磁截止阀20，该电磁截止阀20设置在输送管路18上，且该电磁截止阀20具有第一工作状态及第二工作状态，在第一工作状态下，储液箱10内的液体能够流入至液压缸26内，并能够阻止液压缸26内的液体流回至储液箱10；在第二工作状态下，液压缸26内的液体能够流回至储液箱10，并能阻止储液箱10内的液体流入至液压缸26内。本实施例中，通过在输送管路18上设置该电磁截止阀20，可缓解液压缸26内泄的情况，避免自动降坝的情况发生。Optionally, the precision lifting hydraulic control system may also include an electromagnetic cut-off valve 20, which is arranged on the delivery pipeline 18, and the electromagnetic cut-off valve 20 has a first working state and a second working state, and in the second In the first working state, the liquid in the hydraulic cylinder 10 can flow into the hydraulic cylinder 26, and can prevent the liquid in the hydraulic cylinder 26 from flowing back into the liquid storage tank 10; in the second working state, the liquid in the hydraulic cylinder 26 It can flow back to the liquid storage tank 10 and prevent the liquid in the liquid storage tank 10 from flowing into the hydraulic cylinder 26 . In this embodiment, by setting the electromagnetic shut-off valve 20 on the delivery pipeline 18, the internal leakage of the hydraulic cylinder 26 can be alleviated, and the occurrence of automatic dam lowering can be avoided.
在本申请的一个实施例中，该精准升降液压控制系统还可包括换向阀21，该换向阀21安装在进液管路12上，可以用来改变液体流动的方向。优选地，该换向阀21可通过上述压力继电器19进行控制，具体地，该压力继电器19检测到坝体升高到指定位置后，并将检测到的信息传送给控制装置，该控制装置可控制换向阀21停止工作，使得进液管路12停止向液压缸26内供油。In an embodiment of the present application, the precise lifting hydraulic control system may further include a reversing valve 21, which is installed on the liquid inlet pipeline 12 and can be used to change the direction of liquid flow. Preferably, the reversing valve 21 can be controlled by the above-mentioned pressure relay 19, specifically, the pressure relay 19 detects that the dam body has risen to a specified position, and transmits the detected information to the control device, which can The reversing valve 21 is controlled to stop working, so that the liquid inlet pipeline 12 stops supplying oil to the hydraulic cylinder 26 .
优选地，该精准升降液压控制系统还包括调速阀，上述回液管路13和进液管路12中的至少一者设置有调速阀，该调速阀用于调节流经回液管路13或进液管路12中液体的流速，一方面可以缓解流速过快导致压力过高，从而损坏液压缸26情况，另一方面可以缓解流速过慢导致压力过小，从而不能保证坝体及时升降的问题。Preferably, the precision lifting hydraulic control system further includes a speed regulating valve, at least one of the above-mentioned liquid return pipeline 13 and the liquid inlet pipeline 12 is provided with a speed regulating valve, and the speed regulating valve is used to adjust the flow rate through the liquid return pipe. The flow velocity of the liquid in the pipeline 13 or the liquid inlet pipeline 12 can, on the one hand, alleviate the situation where the flow velocity is too fast and cause the pressure to be too high, thereby damaging the hydraulic cylinder 26; The problem of rising and falling in time.
进一步地，该调速阀为双向调速阀22，该双向调速阀22设置在回液管路13和进液管路12上，既能够调节流经回液管路13中液体的流速，又能调节流经进液管路12中液体的流速。Further, the speed regulating valve is a two-way speed regulating valve 22, and the two-way speed regulating valve 22 is arranged on the liquid return pipeline 13 and the liquid inlet pipeline 12, which can adjust the flow rate of the liquid flowing through the liquid return pipeline 13, The flow rate of the liquid passing through the liquid inlet pipeline 12 can also be adjusted.
其中，为了防止液压过高，该精准升降液压控制系统还可包括溢流阀23，该溢流阀23的入口与进液管路12连通，溢流阀23的出口通过回液管路13与储液箱10连通。通过设置该溢流阀23，可以使多余的液体沿溢流阀23并通过回液管路13返回到储液箱10内，以保证液压缸26内的压力在指定范围内。Wherein, in order to prevent the hydraulic pressure from being too high, the precision lifting hydraulic control system can also include a relief valve 23, the inlet of the relief valve 23 communicates with the liquid inlet pipeline 12, and the outlet of the relief valve 23 communicates with the liquid return pipeline 13. The liquid storage tank 10 communicates. By setting the overflow valve 23, excess liquid can be returned to the liquid storage tank 10 along the overflow valve 23 and through the liquid return line 13, so as to ensure that the pressure in the hydraulic cylinder 26 is within a specified range.
在本申请的一个实施例中，该精准升降液压控制系统还包括应急泄压管24和泄压截止阀25，应急泄压管24的一端与液压缸26连通，应急泄压管24的另一端与储液箱10连通，泄压截止阀25设置在应急泄压管24上，用于控制应急泄压管24的通路状态，正常情况下泄压截止阀25处于常闭状态，以使应急泄压管24处于断开状态，当洪水来临时，该泄压截止阀25处于打开状态，从而使得该应急泄压管24处于连通状态，继而能够实现降坝过程，保证河道上游安全。In one embodiment of the present application, the precision lifting hydraulic control system further includes an emergency pressure relief pipe 24 and a pressure relief cut-off valve 25, one end of the emergency pressure relief pipe 24 communicates with the hydraulic cylinder 26, and the other end of the emergency pressure relief pipe 24 Connected with the liquid storage tank 10, the pressure relief cut-off valve 25 is arranged on the emergency pressure relief pipe 24, and is used to control the passage state of the emergency pressure relief pipe 24. Under normal circumstances, the pressure relief stop valve 25 is in a normally closed state, so that the emergency pressure relief The pipe 24 is disconnected, and when the flood comes, the pressure relief shut-off valve 25 is opened, so that the emergency pressure relief pipe 24 is in a connected state, and then the dam drop process can be realized to ensure the safety of the upper reaches of the river.
另外，本申请还提供了一种合页活动坝，其包括坝体及上述任一实施例所述的精准升降液压控制系统，该坝体与液压缸26中的活塞杆260连接，精准升降液压控制系统能够驱动坝体进行升降运动。In addition, the present application also provides a hinge movable dam, which includes a dam body and the precision lifting hydraulic control system described in any one of the above-mentioned embodiments, the dam body is connected with the piston rod 260 in the hydraulic cylinder 26, and the precise lifting hydraulic pressure The control system can drive the dam body to move up and down.
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.
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| CN105626596A (en) * | 2016-02-23 | 2016-06-01 | 中国水利水电科学研究院 | Driving system for hydraulically driven movable dams |
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Application publication date: 20170912 |