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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- CN107152424A CN107152424A CN201710465627.8A CN201710465627A CN107152424A CN 107152424 A CN107152424 A CN 107152424A CN 201710465627 A CN201710465627 A CN 201710465627A CN 107152424 A CN107152424 A CN 107152424A
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- valve
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- control system
- hydraulic cylinder
- hydraulic control
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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
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Civil Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The application is related to hinge movable dam actuation techniques field, more particularly to a kind of accurate lifting hydraulic control system and hinge movable dam.The accurate lifting hydraulic control system includes liquid reserve tank, hydraulic pump, hydraulic cylinder, water influent pipeline, liquid back pipe road, first valve, second valve and flow sensor, the entrance of hydraulic pump is connected with liquid reserve tank, the outlet of hydraulic pump is connected by water influent pipeline with the entrance of hydraulic cylinder, the outlet of hydraulic cylinder is connected by liquid back pipe road with liquid reserve tank, the first valve and the second valve are respectively arranged with water influent pipeline and liquid back pipe road, at least one of water influent pipeline and liquid back pipe road are provided with flow sensor, flow sensor is used to detect the amount of liquid for flowing through water influent pipeline or liquid back pipe road, so as to extrapolate the adjustable height for the dam body being connected with the piston rod, improve the control accuracy to dam body adjustable height, realize that height is retained and adjusted to water body in the case of being laid in river course without cable is precisely controlled.
Description
Technical field
The application is related to hinge movable dam actuation techniques field, more particularly to a kind of accurate lifting hydraulic control system and conjunction
Page movable dam.
Background technology
In recent years, because hinge movable dam has simple operation, lifting is flexible, the advantages of landscape effect is good, therefore wide
It is general to be applied in hydraulic engineering, for realizing the functions such as flood control, water supply, irrigation, hydroelectric generation.
At present, hinge movable dam generally includes hydraulic cylinder and dam body, by controlling hydraulic cylinder extension, to drive dam body liter
Drop.But because the regimen in river course is complicated, the dress of the sensing for detecting its travel or angle installed on hydraulic cylinder and dam body
Put and electrical equipment more be located under water, cause production installation cost high, and post facility is difficult in maintenance, therefore, generally does at present
Method is to measure the adjustable height of dam body by way of manually estimating, but the degree of precision that this mode is measured is low, at random
Property it is larger, there is relatively large deviation, water level regulation need of work perseveration, for longer in the water storage that is easily caused on river course position
Dam, reduces lifting efficiency, so that the waste of water body is easily caused, the faulty operation occurred during increasing energy consumption, and regulation
The safety in downstream even can be threatened.
The content of the invention
This application provides a kind of accurate lifting hydraulic control system and hinge movable dam, the liter of dam body can be accurately measured
Drop height, and need not lay stroke or angular transducer in river course and its control cable, and can join with PLC electric-control systems
The technologies such as dam are stayed in control, the action of accurate automatic lifting and any opening degree for realizing dam body automatically.In addition, the system can be avoided on river course
Water storage position there is human error, improve lifting efficiency, and the water storage that upper river occurs for reduction wastes or threatened downstream
The probability of safety.
The application first aspect provides a kind of accurate lifting hydraulic control system, and for hinge movable dam, it includes：With
Passed in the liquid reserve tank of storage liquid, hydraulic pump, hydraulic cylinder, water influent pipeline, liquid back pipe road, the first valve, the second valve and flow
Sensor,
The entrance of the hydraulic pump is connected with the liquid reserve tank, and the outlet of the hydraulic pump passes through the water influent pipeline and institute
The entrance connection of hydraulic cylinder is stated, so that the liquid in the liquid reserve tank can be flowed into the hydraulic cylinder, the water influent pipeline
First valve is provided with,
The outlet of the hydraulic cylinder is connected by the liquid back pipe road with the liquid reserve tank, so that the liquid in the hydraulic cylinder
Body can flow back on the liquid reserve tank, the liquid back pipe road and be provided with second valve,
At least one of the water influent pipeline and the liquid back pipe road are provided with the flow sensor, and the flow is passed
Sensor is used to detect the amount of liquid for flowing through the water influent pipeline or the liquid back pipe road.
Preferably, first valve is stop valve or check valve, and second valve is hydraulic control one-way valve.
Preferably, in addition to transfer pipeline, the water influent pipeline is connected with transfer pipeline described in the liquid back pipe Lu Junyu,
And connected by the transfer pipeline with the hydraulic cylinder.
Preferably, in addition to pressure switch and control device, the pressure switch is arranged on the transfer pipeline,
And communicated to connect with the control device.
Preferably, in addition to electromagnet cut off valve, the electromagnet cut off valve is arranged on the transfer pipeline, and the electromagnetism is cut
Only valve has the first working condition and the second working condition,
Under first working condition, the liquid in the liquid reserve tank can be flowed into the hydraulic cylinder；
Under second working condition, the liquid in the hydraulic cylinder can flow back into the liquid reserve tank.
Preferably, in addition to reversal valve, the reversal valve is arranged in the water influent pipeline.
Preferably, in addition to flow speed control valve, at least one of the liquid back pipe road and the water influent pipeline are provided with described
Flow speed control valve.
Preferably, in addition to overflow valve, the entrance of the overflow valve is connected with the water influent pipeline, and the overflow valve goes out
Mouth is connected by the liquid back pipe road with the liquid reserve tank.
Preferably, in addition to emergency pressure relief pipe and pressure release stop valve, one end of the emergency pressure relief pipe and the hydraulic cylinder
Connection, the other end of the emergency pressure relief pipe is connected with the liquid reserve tank, and the pressure release stop valve is arranged on the emergency pressure relief
Guan Shang.
The application second aspect additionally provides a kind of hinge movable dam, and it includes dam body and accurate described in any of the above-described
Lifting hydraulic control system, the dam body is connected with the piston rod in the hydraulic cylinder, the accurate lifting hydraulic control system
The dam body can be driven to carry out elevating movement.
The technical scheme that the application is provided can reach following beneficial effect：
Accurate lifting hydraulic control system provided herein, at least one of water influent pipeline and liquid back pipe road
Flow sensor is provided with, the amount of liquid for flowing through water influent pipeline or liquid back pipe road is detected by the flow sensor, is then passed through
The amount of liquid detected can extrapolate the flexible height of the piston rod in hydraulic cylinder, so as to accurately draw and the piston rod
The adjustable height of the dam body of connection, realizes the measurement and control to key parameters such as hydraulic cylinder travel, degree in height of dam.Wherein, should
Accurate lifting hydraulic control system can be with PLC (Programmable Logic Controller, programmable logic controller (PLC)) electricity
Gas control system, which is realized, to be jointly controlled, and dam is stayed in the accurate automation lifting and any opening degree for realizing whole dam bodys automatically.This is accurate
Lifting hydraulic control system greatly improves the precision and automaticity of dam body adjustable height, and need not be laid in river course
Any sensing device and electrical equipment, significantly reduce the management service difficulty to equipment in river course, further increase dam
The lifting efficiency of body, reduces energy consumption, it is to avoid gross error occurs in the water storage position on river course, so as to reduce the storage for occurring upper river
Water waste or the safe probability for threatening downstream.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Application.
Brief description of the drawings
The overall structure diagram for the accurate lifting hydraulic control system that Fig. 1 is provided by the embodiment of the present application.
Reference：
10- liquid reserve tanks；
11- hydraulic pumps；
12- water influent pipelines；
13- liquid back pipes road；
14- stop valves；
15- check valves；
16- hydraulic control one-way valves；
17- flow sensors；
18- transfer pipelines；
19- pressure switches；
20- electromagnet cut off valve；
21- reversal valves；
22- bidirectional speed governing valves；
23- overflow valves；
24- emergency pressure relief pipes；
25- pressure release stop valves；
26- hydraulic cylinders；
260- piston rods.
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
Embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing.
As shown in figure 1, the embodiment of the present application provides a kind of accurate lifting hydraulic control system, it is applied to hinge activity
Dam, the accurate lifting hydraulic control system can drive the dam body of hinge movable dam to carry out elevating movement.
This accurate lifting hydraulic control system may include for the liquid reserve tank 10 for storing liquid, hydraulic pump 11, hydraulic cylinder 26,
Water influent pipeline 12, liquid back pipe road 13, the first valve and the second valve.The liquid of the memory storage of liquid reserve tank 10 is usually hydraulic oil,
The entrance of hydraulic pump 11 is connected with liquid reserve tank 10, and the outlet of hydraulic pump 11 is connected by water influent pipeline 12 and the entrance of hydraulic cylinder 26
It is logical, so that the liquid in liquid reserve tank 10 can flow into hydraulic cylinder 26.Because the hydraulic cylinder 26 is usually located at below dam body, and should
The piston rod 260 of hydraulic cylinder 26 is connected with dam body, therefore, and the band of hydraulic cylinder 26 can be driven when liquid is flowed into hydraulic cylinder 26
Dynamic dam body rises.Wherein, the first valve is provided with the water influent pipeline 12, first valve is used to control the logical of water influent pipeline 12
Disconnected state.And the outlet of hydraulic cylinder 26 is connected by liquid back pipe road 13 with liquid reserve tank 10, so that the liquid in hydraulic cylinder 26 can
Liquid reserve tank 10 is flow back into, so as to drive dam body to decline.Wherein, the second valve is provided with the liquid back pipe road 13, this second
Valve is used for the on off operating mode for controlling liquid back pipe road 13.
Specifically, above-mentioned accurate lifting hydraulic control system may also include flow sensor 17, above-mentioned water influent pipeline 12 with
At least one of liquid back pipe road 13 is provided with this flow sensor 17, and this flow sensor 17 flows through water influent pipeline for detection
12 or the amount of liquid on liquid back pipe road 13, and the amount of liquid detected can be sent to control device, the control device can basis
The fluid flowmeter that the flow sensor 17 is detected calculates the flexible height of the piston rod 260 in hydraulic cylinder 26, so as to standard
The adjustable height for the dam body being connected with the piston rod 260 is really drawn, is realized to key parameters such as hydraulic cylinder travel, degree in height of dam
Measurement and control.Wherein, the accurate lifting hydraulic control system can with PLC (Programmable Logic Controller,
Programmable logic controller (PLC)) electric control system realizes and jointly controls, and realizes the accurate automation liftings of whole dam bodys and any
Aperture stays dam automatically.The accurate lifting hydraulic control system greatly improves the precision and automaticity of dam body adjustable height,
And any sensing device and electrical equipment need not be laid in river course, significantly reduce the management service to equipment in river course
Difficulty, further increases the lifting efficiency of dam body, reduces energy consumption, it is to avoid gross error occurs in the water storage position on river course, so that
The water storage that upper river occurs for reduction wastes or threatened the safe probability in downstream.
Preferably, water influent pipeline 12 is provided with above-mentioned flow sensor 17 with liquid back pipe road 13, so that the accurate lifting
Hydraulic control system can either detect the amount of liquid for flowing through water influent pipeline 12, and can detect the amount of liquid for flowing through liquid back pipe road 13.
What deserves to be explained is, because hinge movable dam generally includes multiple dam bodys, in order to realize the same of multiple dam bodys
When drive, multiple water influent pipelines 12 being connected in parallel are may include in the accurate lifting hydraulic control system and multiple are connected in parallel
Liquid back pipe road 13, to realize multiple dam bodys while carrying out lifting process.And in order to extend accurate lifting hydraulic control system
Hydraulic pump 11 in service life, the accurate lifting hydraulic control system may be designed as it is multiple, when hydraulic pump 11 is damaged,
Also other hydraulic pumps 11 can continue to work.
In one embodiment of the application, above-mentioned first valve can be stop valve 14 or check valve 15, specifically, when this
When first valve is stop valve 14, the stop valve 14 is in connected state during Sheng Ba, so as to make the pump of hydraulic pump 11
The liquid taken is flowed into hydraulic cylinder 26 by water influent pipeline 12, then drives dam body to rise, and the stop valve 14 is in drop dam process
In be closed, it is to avoid the liquid in hydraulic cylinder 26 is back in hydraulic pump 11 by water influent pipeline 12, causes hydraulic pump
11 situations about damaging；When first valve is check valve 15, due to check valve, 15 allow liquid to pass through in one direction,
And then completely close in backward direction, therefore, the check valve 15 can only allow the liquid of the pumping of hydraulic pump 11 to pass through feed tube
Road 12 is flowed into hydraulic cylinder 26, and in backward direction, prevents the liquid in hydraulic cylinder 26 from being flow back into by water influent pipeline 12
Hydraulic pump 11, so as to reduce the probability of the damage of hydraulic pump 11.Wherein, the quantity of first valve can be multiple.
And the second valve is hydraulic control one-way valve 16, usually the hydraulic control one-way valve 16 is in unidirectional cutoff state, so as to return liquid
Pipeline 13 is off, i.e.,：Liquid is prevented to be back to liquid reserve tank 10 from hydraulic cylinder 26.And work as and apply to hydraulic control one-way valve 16
After certain pressure, thus it is possible to vary the cut-off state of hydraulic control one-way valve 16, so that the liquid in hydraulic cylinder 26 can be passed through
Liquid back pipe road 13 is flow back into liquid reserve tank 10, so as to realize the operation of drop dam.
In one embodiment of the application, the accurate lifting hydraulic control system also include transfer pipeline 18, it is above-mentioned enter
Liquid pipeline 12 and liquid back pipe road 13 are connected with transfer pipeline 18, and are connected by transfer pipeline 18 with hydraulic cylinder 26, are so set
Meter can reduce the complicated difficulty of hydraulic cylinder 26, specifically, the quantity of the upper shed of hydraulic cylinder 26 can be reduced, if for example, entered
Liquid pipeline 12 and liquid back pipe road 13 are individually connected with hydraulic cylinder 26, then the hydraulic cylinder 26 will offer one and feed tube respectively
The entrance of the connection of road 12 and the outlet connected with liquid back pipe road 13, and water influent pipeline 12 and liquid back pipe road 13 are equal in the present embodiment
Connect, then connected again by the transfer pipeline 18 with hydraulic cylinder 26 with transfer pipeline 18, so the hydraulic cylinder 26 can only open up with
The opening that transfer pipeline 18 is connected, the opening can either equivalent to the entrance connected with water influent pipeline 12, also can equivalent to
The outlet that liquid back pipe road 13 is connected, reduces the complicated difficulty of hydraulic cylinder 26.
Wherein, the accurate lifting hydraulic control system may also include pressure switch 19 and control device (does not show in figure
Go out), the pressure switch 19 is arranged on transfer pipeline 18, and is communicated to connect with control device.When the control of accurate raise-lower hydraulic
When system drive dam body is increased to specified location, the pressure switch 19 is closed, and dam body is had been raised into specified location
Information transmission to control device, then control device control hydraulic pump 11 is stopped so that the dam body is maintained at this and specified
Position.
Alternatively, the accurate lifting hydraulic control system may also include electromagnet cut off valve 20, and the electromagnet cut off valve 20 is set
On transfer pipeline 18, and the electromagnet cut off valve 20 has the first working condition and the second working condition, in the first working condition
Under, the liquid in liquid reserve tank 10 can be flowed into hydraulic cylinder 26, and the liquid in hydraulic cylinder 26 can be prevented to flow back into liquid storage
Case 10；In a second operative state, the liquid in hydraulic cylinder 26 can flow back into liquid reserve tank 10, and can prevent in liquid reserve tank 10
Liquid is flowed into hydraulic cylinder 26.In the present embodiment, by setting the electromagnet cut off valve 20 on transfer pipeline 18, liquid can be alleviated
Situation about being let out in cylinder pressure 26, it is to avoid the situation on automatic drop dam occurs.
In one embodiment of the application, the accurate lifting hydraulic control system may also include reversal valve 21, the commutation
Valve 21 is arranged in water influent pipeline 12, the direction that can be flowed for change liquid.Preferably, the reversal valve 21 can be by above-mentioned
Pressure switch 19 is controlled, specifically, and the pressure switch 19 detects dam body and is increased to after specified location, and will detection
The information transmission arrived is to control device, and the control device can control reversal valve 21 and be stopped so that water influent pipeline 12 stop to
Fuel feeding in hydraulic cylinder 26.
Preferably, the accurate lifting hydraulic control system also includes flow speed control valve, above-mentioned liquid back pipe road 13 and water influent pipeline 12
At least one of be provided with flow speed control valve, the flow speed control valve, which is used to adjust, flows through the stream of liquid in liquid back pipe road 13 or water influent pipeline 12
Speed, on the one hand can alleviate that flow velocity is too fast to cause hypertonia, so as to damage the situation of hydraulic cylinder 26, on the other hand can alleviate stream
Speed causes pressure too small slowly excessively, so that it cannot be guaranteed that the problem of dam body is lifted in time.
Further, the flow speed control valve is bidirectional speed governing valve 22, and the bidirectional speed governing valve 22 is arranged on liquid back pipe road 13 and feed liquor
On pipeline 12, the flow velocity for flowing through liquid in liquid back pipe road 13 can either be adjusted, and can adjust and flow through liquid in water influent pipeline 12
Flow velocity.
Wherein, in order to prevent hydraulic pressure too high, the accurate lifting hydraulic control system may also include overflow valve 23, the overflow valve
23 entrance is connected with water influent pipeline 12, and the outlet of overflow valve 23 is connected by liquid back pipe road 13 with liquid reserve tank 10.By setting
The overflow valve 23, can make unnecessary liquid along overflow valve 23 and be returned to by liquid back pipe road 13 in liquid reserve tank 10, to ensure
Pressure in hydraulic cylinder 26 is within the specified range.
In one embodiment of the application, the accurate lifting hydraulic control system also includes emergency pressure relief pipe 24 and pressure release
Stop valve 25, one end of emergency pressure relief pipe 24 is connected with hydraulic cylinder 26, and the other end of emergency pressure relief pipe 24 is connected with liquid reserve tank 10,
Pressure release stop valve 25 is arranged on emergency pressure relief pipe 24, the channel status for controlling emergency pressure relief pipe 24, is let out under normal circumstances
Pressure cutoff valve 25 is in normally off, so that emergency pressure relief pipe 24 is off, the pressure release stop valve interim when flood
25 are in open mode, so that the emergency pressure relief pipe 24 is in connected state, can then realize drop dam process, it is ensured that river
Road downstream security.
In addition, present invention also provides a kind of hinge movable dam, it includes dam body and the essence described in any of the above-described embodiment
Quasi- lifting hydraulic control system, the dam body is connected with the piston rod 260 in hydraulic cylinder 26, and accurate lifting hydraulic control system can
Dam body is driven to carry out elevating movement.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of accurate lifting hydraulic control system, for hinge movable dam, it is characterised in that including：For storing liquid
Liquid reserve tank, hydraulic pump, hydraulic cylinder, water influent pipeline, liquid back pipe road, the first valve, the second valve and flow sensor,
The entrance of the hydraulic pump is connected with the liquid reserve tank, and the outlet of the hydraulic pump passes through the water influent pipeline and the liquid
The entrance connection of cylinder pressure, is set so that the liquid in the liquid reserve tank can be flowed into the hydraulic cylinder, the water influent pipeline
There is first valve,
The outlet of the hydraulic cylinder is connected by the liquid back pipe road with the liquid reserve tank, so that the liquid energy in the hydraulic cylinder
Enough flow back on the liquid reserve tank, the liquid back pipe road and be provided with second valve,
At least one of the water influent pipeline and the liquid back pipe road are provided with the flow sensor, the flow sensor
The amount of liquid on the water influent pipeline or the liquid back pipe road is flowed through for detecting.
2. accurate lifting hydraulic control system according to claim 1, it is characterised in that
First valve is stop valve or check valve, and second valve is hydraulic control one-way valve.
3. accurate lifting hydraulic control system according to claim 2, it is characterised in that also including transfer pipeline,
The water influent pipeline is connected with transfer pipeline described in the liquid back pipe Lu Junyu, and passes through the transfer pipeline and the liquid
Cylinder pressure is connected.
4. accurate lifting hydraulic control system according to claim 3, it is characterised in that also including pressure switch and control
Device processed, the pressure switch is arranged on the transfer pipeline, and is communicated to connect with the control device.
5. accurate lifting hydraulic control system according to claim 3, it is characterised in that also including electromagnet cut off valve, institute
State electromagnet cut off valve to be arranged on the transfer pipeline, the electromagnet cut off valve has the first working condition and the second work shape
State,
Under first working condition, the liquid in the liquid reserve tank can be flowed into the hydraulic cylinder；
Under second working condition, the liquid in the hydraulic cylinder can flow back into the liquid reserve tank.
6. accurate lifting hydraulic control system according to claim 1, it is characterised in that described to change also including reversal valve
It is arranged on to valve in the water influent pipeline.
7. accurate lifting hydraulic control system according to claim 1, it is characterised in that also including flow speed control valve, described time
At least one of liquid pipeline and the water influent pipeline are provided with the flow speed control valve.
8. accurate lifting hydraulic control system according to claim 1, it is characterised in that also including overflow valve, described to overflow
The entrance of stream valve is connected with the water influent pipeline, and the outlet of the overflow valve is connected by the liquid back pipe road and the liquid reserve tank
It is logical.
9. accurate lifting hydraulic control system according to any one of claim 1 to 8, it is characterised in that also including answering
Anxious relief tube and pressure release stop valve, one end of the emergency pressure relief pipe are connected with the hydraulic cylinder, the emergency pressure relief pipe it is another
One end is connected with the liquid reserve tank, and the pressure release stop valve is arranged on the emergency pressure relief pipe.
10. a kind of hinge movable dam, it is characterised in that including accurate any one of dam body and the claims 1 to 9
Lifting hydraulic control system, the dam body is connected with the piston rod in the hydraulic cylinder, the accurate lifting hydraulic control system
The dam body can be driven to carry out elevating movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465627.8A CN107152424A (en) | 2017-06-19 | 2017-06-19 | A kind of accurate lifting hydraulic control system and hinge movable dam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710465627.8A CN107152424A (en) | 2017-06-19 | 2017-06-19 | A kind of accurate lifting hydraulic control system and hinge movable dam |
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| CN107152424A true CN107152424A (en) | 2017-09-12 |
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| CN201710465627.8A Pending CN107152424A (en) | 2017-06-19 | 2017-06-19 | A kind of accurate lifting hydraulic control system and hinge movable dam |
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| CN108330922A (en) * | 2018-04-18 | 2018-07-27 | 衢州市江汇翻板闸门有限公司 | A kind of gate hydraulic-pressure control apparatus |
| CN110514658A (en) * | 2019-09-09 | 2019-11-29 | 李永健 | A kind of test paper check analysis method for medical inspection |
| CN110514657A (en) * | 2019-09-09 | 2019-11-29 | 李永健 | A kind of medical treatment test paper check analysis instrument device |
| CN114594706A (en) * | 2022-02-07 | 2022-06-07 | 安徽聚源水利科技液压坝制造有限公司 | Network control hinge dam and intelligent control system |
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| CN110514658A (en) * | 2019-09-09 | 2019-11-29 | 李永健 | A kind of test paper check analysis method for medical inspection |
| CN110514657A (en) * | 2019-09-09 | 2019-11-29 | 李永健 | A kind of medical treatment test paper check analysis instrument device |
| CN110514658B (en) * | 2019-09-09 | 2021-01-15 | 张养华 | Test paper inspection and analysis method for medical inspection |
| CN114594706A (en) * | 2022-02-07 | 2022-06-07 | 安徽聚源水利科技液压坝制造有限公司 | Network control hinge dam and intelligent control system |
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Application publication date: 20170912 |
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