CN113818553B - Intelligent control efficient sealing hydraulic rotary weir gate - Google Patents
Intelligent control efficient sealing hydraulic rotary weir gate Download PDFInfo
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- CN113818553B CN113818553B CN202111400184.7A CN202111400184A CN113818553B CN 113818553 B CN113818553 B CN 113818553B CN 202111400184 A CN202111400184 A CN 202111400184A CN 113818553 B CN113818553 B CN 113818553B
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- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
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Abstract
The invention relates to an intelligent control high-efficiency sealed hydraulic rotary weir gate, which comprises a hydraulic oil cylinder, a gate frame, a gate body, a base, a plurality of inflatable sealing devices and a sensor system, wherein the inflatable sealing devices are arranged between the gate frame and the gate body and comprise two pressing blocks and a sealing air bag between the two pressing blocks, the sealing air bag is fixed on the gate frame through the pressing blocks, and the sealing air bag contracts into a space between the two pressing blocks after being exhausted; the sensor system comprises a liquid level sensor arranged on the upstream side of the door body, an angle sensor arranged on a rotating shaft of the door body, a first pressure sensor for detecting the pressure of a hydraulic oil cylinder and a pressure control valve; the angle sensor is used for monitoring the rotating angle of the door body; the angle sensor, the first pressure sensor and the pressure control valve are used for controlling the door body to be opened and closed repeatedly, and foreign matters are washed away by water flow; and the liquid level sensor and the pressure control valve are used for calculating and ensuring the low-energy-consumption running of the door body according to the liquid level at the upstream side of the door body.
Description
Technical Field
The invention belongs to the technical field of water supply and drainage equipment, and particularly relates to an intelligent control efficient sealing hydraulic drive rotary weir gate.
Background
The hydraulic rotary weir gate is driven by a hydraulic oil cylinder and is divided into a side plate type rotary weir gate and a frame type rotary weir gate, and the openable weir gate is arranged at a drainage outlet of a diversion well, an interception well or a regulation pool and plays a role in intercepting or regulating liquid level or regulating water quantity or discharging sewage. The hydraulic rotary weir gate has complex use environment, is used in water environment most of the time, has more complex water body, water quality and water quantity, and has strict requirements on the strength, the sealing, the long-term use stability and the like of the hydraulic rotary weir gate.
At present, the rotatory weir gate that surges has comparatively ripe application in the drainage trade, nevertheless because domestic service environment is abominable, the pipe network condition is more complicated, and at the actual motion in-process, equipment still has following problem: (1) during the operation of the hydraulic rotary weir gate, the door plate and the sealing air bag are deformed or even the equipment is damaged due to the clamping stagnation of foreign matters; (2) the hydraulic rotary weir gate has the defects of uneven processing surface and untight sealing to generate leakage due to processing reasons; (3) the leakage is caused by the fact that the equipment is deformed due to external factors such as installation, hoisting and the like, and the sealing is not tight; (4) the existing sealing part is complex in installation form, and the sealing material is difficult to replace and maintain due to aging; (5) the water head of the door plate is higher due to the inland water level, and the leakage is generated due to the fact that the weir door plate cannot be subjected to pressure maintaining and locking for a long time; (6) the overflow flow of weir gate can't realize accurate regulation and effectual management and control.
Disclosure of Invention
In order to solve one of the problems, the invention provides an intelligent control high-efficiency sealed hydraulic drive rotary weir gate which comprises a hydraulic oil cylinder, a gate frame, a gate body, a base, a plurality of inflatable sealing devices and a sensor system, wherein the inflatable sealing devices are arranged between the gate frame and the gate body and comprise two pressing blocks and a sealing air bag between the two pressing blocks, the sealing air bag is fixed on the gate frame through the pressing blocks, and the sealing air bag contracts into a space between the two pressing blocks after exhausting;
the sensor system comprises a liquid level sensor arranged on the upstream side of the door body, an angle sensor arranged on a rotating shaft of the door body, a first pressure sensor for detecting the pressure of a hydraulic oil cylinder and a pressure control valve; the angle sensor is used for monitoring the rotating angle of the door body so as to adjust the overflow flow of the rotating weir gate; the angle sensor, the first pressure sensor and the pressure control valve are used for controlling the door body to be opened and closed repeatedly, and foreign matters are washed away by water flow; and the liquid level sensor and the pressure control valve are used for calculating according to the liquid level at the upstream side of the door body and ensuring the low-energy-consumption operation of the door body.
The hydraulic rotary weir gate provided by the invention belongs to a side plate type weir gate, is improved on the basis of the traditional hydraulic rotary weir gate, is additionally provided with a plurality of inflatable sealing devices on the basis of the existing flat plate type compression sealing, can be additionally provided with line type sealing on the basis of surface type sealing when the inflatable sealing devices are arranged in rows, and can strengthen the sealing between a door body and a door frame in real time by adjusting the inflation pressure of a sealing air bag in real time, thereby avoiding the problem that the sealing of the existing sealing strip is not adjustable. Simultaneously, the sensor system can real-time supervision the switching condition of the door body, through simple pressure, angle, mutually supporting and detecting of liquid level, can reach foretell multiple functions, makes the operation of the rotatory weir door that surges is more energy-conserving, safe and reliable.
Optionally, the inflatable sealing device is fixed on the downstream side of the door frame, the inflatable sealing device includes a pressing block and a sealing airbag, the pressing block includes a first pressing block and a second pressing block, the first pressing block and the second pressing block are both fixed on the surface of the downstream side of the door frame in an annular manner, the first pressing block is an outer ring, the second pressing block is an inner ring, and the sealing airbag is arranged between the first pressing block and the second pressing block; the sealing air bag surrounds the downstream side of the door frame for one circle.
Further optionally, the thickness of the pressing block at the lower part of the door frame protruding out of the door frame is greater than that of the pressing block at the upper part of the door frame, the thickness of the pressing block is gradually increased from top to bottom, and the thickness of the first pressing block and the second pressing block at the same horizontal height is the same, so that the downstream side surface of the pressing block is integrally a flat inclined plane; the angle formed by the inclined plane and the vertical plane is preferably 5-15 degrees.
Preferably, the downstream side surface of the pressing block is provided with a sealing gasket for contacting the door body with the downstream side surface of the pressing block after the sealing airbag is burst, so as to form an emergency sealing ring.
Optionally, the air-tight bag comprises a compacting part, a convex part and an inflating nozzle, the convex part is semicircular, and after the air-tight bag is inflated, the top of the convex part is contacted with the door body and is pressed.
Optionally, the material of the compaction portion and the material of the bulge portion are both memory rubber, the material of the inflation nozzle is 304 stainless steel, and the inflation nozzle is connected with the air pipe to realize inflation or exhaust in the sealed air bag.
Optionally, the inflation sealing device further comprises an inflation control device, the inflation control device comprises an air compressor, a second pressure sensor, an integrated controller and a vent pipe, the integrated controller is in communication connection with the air compressor and the second pressure sensor, and the air compressor is connected with the second pressure sensor and an inflation nozzle of the sealing airbag through the vent pipe and used for inflating and exhausting the sealing airbag.
Preferably, the sealed air bag comprises a plurality of third pressure sensors, is in communication connection with the integrated controller and is used for detecting the air pressure in the sealed air bag in real time; the two ends of the third pressure sensor are respectively provided with a sealing soft plate, the position of the door frame corresponding to the compaction part of the sealing air bag is provided with a corresponding accommodating hole, and the third pressure sensor can stretch in and out of the accommodating hole.
Optionally, a plurality of water spraying holes are formed in one side, facing the sealing air bag, of the pressing block, the water spraying direction of the water spraying holes is inclined, and the water spraying holes are used for flushing residual dirt on the surface of the sealing air bag which is not inflated after the door body is closed and contacts the pressing block, so that the sealing air bag is prevented from being abraded and rubbed due to the fact that the dirt is clamped between the sealing air bag and the door body after the sealing air bag is inflated and expanded.
Optionally, a circle of telescopic guard plate is arranged on the outer edge of the downstream side of the door frame, the length of the guard plate is equal to the distance between the door body and the door frame when the door body is vertically closed, namely, after the door body is vertically closed in place and sealed with the inflatable sealing airbag, the guard plate extends out of the door frame and contacts the surface of the upstream side of the door body, a circle of cavity is formed between the guard plate and the inflatable sealing device, and cooled compressed air is filled in the cavity to simulate the temperature and pressure environment of a water body and balance the use states of two sides of the sealing airbag.
The first pressure sensor is in communication connection with the pressure control valve, the hydraulic oil cylinder and the centralized controller, and the angle sensor is in communication connection with the centralized controller. In the process that the door body was closed, when the door body was blocked by the foreign matter, first pressure sensor will detect the pressure increase of the hydraulic cylinder pulling door body, angle sensor will detect the angle change rate when the door body was closed and slow down, pressure when the hydraulic cylinder pulling door body reaches predetermined pressure threshold value, when angle sensor detected the angle of the door body no longer changed simultaneously, prove that the door body was blocked by the foreign matter, centralized control ware control pressure control valve, intermittent type nature reduces, risees hydraulic cylinder's pressure for the door body is opened, the action of closing repeatedly, utilizes rivers to wash away the foreign matter, prevents the equipment jamming.
The liquid level sensor is in communication connection with the integrated controller and monitors the liquid level height of the upstream side of the door body, the integrated controller calculates the pressure head of the door body in the door closing process according to liquid level information, and therefore the pressure of the pressure control valve is controlled to output system pressure matched with the load, equipment damage can be effectively reduced, and the operation of the weir gate with relatively minimum energy consumption can be guaranteed.
When the door body is closed for a long time, the pressure maintaining pressure of the hydraulic oil cylinder can be gradually reduced or unstable, after the door body is closed in place, the pressure maintaining pressure of the hydraulic oil cylinder is monitored in real time by the first pressure sensor, when the pulling force of the hydraulic oil cylinder is smaller than a set value, the pressure control valve is automatically started by the integrated controller, the pulling force of the hydraulic oil cylinder is increased, real-time tight pressing between the door body and the sealing air bag is realized, and leakage is reduced under the long-term closing state.
Drawings
Fig. 1 is a schematic view of the overall structure of the intelligent control high-efficiency sealed hydraulic-drive rotary weir gate;
FIG. 2 is a schematic view of the sealed airbag in an inflated state;
FIG. 3 is a schematic view of the sealed bladder in a deflated state;
FIG. 4 is a schematic view of an inflation control device;
FIG. 5 is a front view of the door frame and the pressing block;
fig. 6 is a side view of the door frame and the pressing block.
In the attached drawing, 1-an installation base, 2-a hydraulic oil cylinder, 3-a sealing gasket, 4-a door frame, 5-a door body, 6-a door body base, 7-an angle sensor, 8-a first pressing block, 801-a second pressing block, 9-a sealing air bag, 901-a compacting part, 902-a convex part, 903-an inflating nozzle, 10-a pressing bolt, 11-a limit stop, 12-an air compressor, 13-an integrated controller, 14-a first pressure sensor, 15-a second pressure sensor, 16-a third pressure sensor, 17-a pressure control valve and 18-a liquid level sensor.
Detailed Description
The intelligent control high-efficiency sealed hydraulic-drive rotary weir gate provided by the embodiment comprises a hydraulic oil cylinder 2, a door frame 4, a door body 5, a door body base 6, a plurality of air-filled sealing devices and a sensor system, wherein the air-filled sealing devices are arranged between the door frame 4 and the door body 5 and comprise two pressing blocks and a sealing air bag 9 between the two pressing blocks, the sealing air bag 9 is fixed on the door frame 4 through the pressing blocks, and the sealing air bag 9 contracts into a space between the two pressing blocks after exhausting;
the sensor system comprises a liquid level sensor 18 arranged on the upstream side of the door body 5, an angle sensor 7 arranged on a rotating shaft of the door body 5, a first pressure sensor 14 for detecting the pressure of the hydraulic oil cylinder 2 and a pressure control valve 17; the angle sensor 7 is used for monitoring the rotating angle of the door body 5 so as to adjust the overflow flow of the rotating weir gate; the angle sensor 7, the first pressure sensor 14 and the pressure control valve 17 are used for controlling the door body 5 to be opened and closed repeatedly, and foreign matters are washed away by water flow; and the liquid level sensor 18 and the pressure control valve 17 are used for calculating and ensuring low-energy-consumption operation of the door body 5 according to the liquid level at the upstream side of the door body 5.
Optionally, the door frame 4 is in a flat plate form and is fixed to the upstream side of the door body 5 by chemical bolts, and the upstream side of the door frame 4 is provided with a sealing gasket 3 to prevent water from leaking.
Optionally, the hydraulic oil cylinder 2 comprises a mounting base 1, the mounting base 1 is of an integral welding structure and is fixed on a wall body on the upstream side of the door frame 4 through a chemical bolt; the hydraulic oil cylinder 2 is made of 304 stainless steel, hinge lug type structures are arranged at two ends of the hydraulic oil cylinder 2, the upper end of the hydraulic oil cylinder 2 is connected with the installation base 1, the lower end of the hydraulic oil cylinder 2 is connected with the door body 5, and power is provided for rotation of the door body 5 through extension and retraction of the hydraulic oil cylinder 2.
Optionally, the door body 5 comprises a door body frame and a rotating shaft, the door body frame is of a box-type structure, the interior of the door body frame is hollow, the weight of the door body 5 is reduced, and the energy consumption of the hydraulic oil cylinder 2 for driving the door body 5 is saved; the bottom of the door body frame is provided with a rotating shaft, the rotating shaft and the door body frame are welded and formed, a door body base 6 is arranged below the rotating shaft, and the rotating shaft comprises two groups of support rings and is respectively installed on the door body base 6 through pin shafts.
Optionally, the inflation sealing device is fixed on the downstream side of the door frame 4, the inflation sealing device includes a pressing block and a sealing airbag 9, the pressing block includes a first pressing block 8 and a second pressing block 801, both the first pressing block 8 and the second pressing block 801 are fixed on the surface of the downstream side of the door frame 4 in an annular manner, the first pressing block 8 is an outer ring, the second pressing block 801 is an inner ring, and the sealing airbag 9 is arranged between the first pressing block 8 and the second pressing block 801; the sealing air bag 9 surrounds the downstream side of the door frame 4 for a circle, and the sealing air bag 9 can be a whole or formed by connecting a plurality of air bags in an ending way.
Optionally, a first pressing groove is formed in one corner of the first pressing block 8, which is in contact with the bottom of the sealed air bag 9, a second pressing groove is formed in one corner of the second pressing block 801, which is in contact with the bottom of the sealed air bag 9, and the first pressing groove and the second pressing groove press the compacted portion 901 of the sealed air bag 9, so that stable operation of the sealed air bag 9 in the inflating and exhausting processes is realized.
Further optionally, the positions of the first pressing groove and the second pressing groove, which are in contact with the sealing air bag 9, are respectively provided with a wedge-shaped chamfer, and the angle of the wedge-shaped chamfer is matched with the expanded sealing air bag 9, so that the sharp edge of the metal pressing block is prevented from scratching the sealing air bag 9, and the service life of the sealing air bag 9 is prolonged.
Optionally, the first pressing block 8 and the second pressing block 801 are both made of 304 stainless steel, are both provided with counter bores, and are tightly compacted with the door frame 4 through the compression bolts 10.
Further optionally, the thickness of the pressing block at the lower part of the door frame 4 protruding out of the door frame 4 is greater than the thickness of the pressing block at the upper part of the door frame 4, the thickness of the pressing block is gradually increased from top to bottom, and the thickness of the first pressing block 8 and the thickness of the second pressing block 801 at the same horizontal height are the same, so that the downstream side surface of the pressing block integrally forms a flat inclined plane; the angle formed by the inclined plane and the vertical plane is preferably 5-15 degrees.
Preferably, a sealing cushion is arranged on the surface of the downstream side of the pressing block, and is used for contacting the door body 5 with the surface of the downstream side of the pressing block to form an emergency sealing ring after the sealing air bag 9 is accidentally burst.
Optionally, the sealing airbag 9 includes a compacted portion 901, a convex portion 902 and an inflating nozzle 903, the convex portion 902 is semicircular, after the sealing airbag 9 is inflated, the top of the convex portion 902 contacts and presses the door body 5, so that the sealing form can be changed from plane sealing to linear sealing, and possible leakage caused by uneven contact surface of the door body 5 or the door frame 4 due to processing reasons or long-term use is eliminated.
Optionally, the material of the compacting part 901 and the material of the protruding part 902 are both memory rubber, and the compacting part 901 and the protruding part 902 are integrally vulcanized and formed without segmentation and interfaces, so that the uniformity and consistency of the sealing airbag 9 in the expansion process are ensured, and the tight sealing between the door frame 4 and the door body 5 is realized; after the air bag 9 is inflated, the thickness of the convex portion 902 is the same, so that the door 5 is kept in a vertical state while being sealed with the door 5.
Further optionally, the material of the convex portion 902 is soft rubber, after the sealing airbag 9 is inflated, the convex portion 902 is elastically deformed greatly, so that tight pressing with the door body 5 can be realized, and the sealing effect is better when the inflation pressure is larger within the allowable range of the inflation pressure of the sealing airbag 9; the material of the compaction part 901 is a braided reinforced memory rubber;
the material of the inflating nozzle 903 is 304 stainless steel, the inflating nozzle 903 is vulcanized and molded with the compacted part 901, and the inflating nozzle 903 is connected with a vent pipeline to realize inflation or exhaust in the sealed air bag 9.
Optionally, the protection level of the angle sensor 7 is IP68, which can monitor the rotation angle of the door 5 in real time and send a corresponding in-place signal.
When the inflatable sealing device is used, the door body 5 is pulled by the hydraulic oil cylinder 2 to be in contact with the surface of the downstream side of the pressing block when being closed, when the angle sensor 7 detects that the angle of the door body 5 is the same as the inclined angle of the inclined plane, the fact that the door body 5 is in contact with the surface of the downstream side of the pressing block in place is shown, at the moment, the sealing cushion on the pressing block is in close contact with the door body 5, and the sealing effect is achieved; the sealing air bag 9 is inflated to expand, continuously protrudes outwards after filling the groove between the two pressing blocks, contacts and jacks up the door body 5, and the door body 5 is sealed; when the door body 5 is jacked up to a vertical position by the sealing air bag 9, the angle sensor 7 detects a corresponding in-place signal, the sealing air bag 9 stops inflating, and the hydraulic oil cylinder 2 maintains pressure. When the door body 5 is opened, the sealing air bag 9 exhausts air, and the convex part 902 contracts into the groove formed by the first pressing block 8 and the second pressing block 801, so that accidental damage is prevented.
Optionally, the hydraulic rotary weir gate further comprises a limit stop 11 made of 304 stainless steel, the limit stop 11 is arranged on the inner side of the first pressing block 8 and/or the inner side of the second pressing block 801, the first pressing block and the second pressing block are fixedly welded on the door frame 4, and when the door body 5 is closed in place at a vertical position, the secondary limit is performed by the limit stop 11, so that the door body 5 is prevented from excessively extruding the sealing air bag 9.
Optionally, the inflation sealing device further comprises an inflation control device, the inflation control device comprises an air compressor 12, a second pressure sensor 15, an integrated controller 13 and a vent pipe, the integrated controller 13 is in communication connection with the air compressor 12 and the second pressure sensor 15, and the air compressor 12 is connected with the second pressure sensor 15 and an inflation nozzle 903 of the sealing airbag 9 through the vent pipe, and is used for inflating and deflating the sealing airbag 9. The centralized controller 13 is a PLC controller.
During the use, when the hydraulic rotary weir gate is closed, the door body 5 rotates through the pulling of the hydraulic oil cylinder 2, when the door body 5 rotates to the position, namely the door body 5 is in contact with the downstream side surface of the pressing block, the angle sensor 7 sends a signal of the position, then the sealed air bag 9 is inflated, the air compressor 12 inflates the sealed air bag 9 through the ventilation pipeline, the inflation pressure is detected in real time by the second pressure sensor 15, the detected signal is transmitted to the integrated controller 13, when the inflation pressure reaches a set value, namely the sealed air bag 9 is completely inflated, and when the angle sensor 7 detects that the door body 5 reaches a vertical position, the integrated controller 13 controls the air compressor 12 to stop running, so that the effective closed-loop control of the hydraulic rotary weir gate sealing is realized. When the door body 5 is opened, the integrated controller 13 controls the air compressor 12 to perform air pumping and exhausting contraction on the sealing air bag 9, the sealing air bag 9 is made of memory rubber and can be completely contracted into a groove formed by the first pressing block 8 and the second pressing block 801, and therefore the sealing air bag 9 is reliably protected.
Preferably, the sealed air bag 9 comprises a plurality of third pressure sensors 16, and is in communication connection with the integrated controller 13, so as to detect the air pressure inside the sealed air bag 9 in real time; two ends of the third pressure sensor 16 are respectively provided with a sealing soft plate, the door frame 4 is provided with a corresponding accommodating hole corresponding to the compaction part 901 of the sealing air bag 9, and the third pressure sensor 16 can stretch out and draw back into the accommodating hole.
More preferably, the third pressure sensor 16 is disposed at a position corresponding to the air bag 9, and is further disposed at a position corresponding to the corner of the door frame 4 of the air bag 9.
When it is not necessary to detect the internal pressure of the sealed air bag 9, the third pressure sensor 16 is retracted into the receiving hole, and the soft sealing plate at the top thereof closes the receiving hole, preventing air leakage from the sealed air bag 9. When the door body 5 needs to be in a closed state for a long time, the sealing airbag 9 may leak due to the influence of temperature and the like, so that the pressure is reduced, the internal pressure of the sealing airbag 9 needs to be detected periodically, when the pressure in the sealing airbag 9 is lower than a set threshold value, the inflation control device is automatically started to inflate the sealing airbag 9 to realize the tight sealing of the weir gate, the third pressure sensor 16 extends out of the accommodating hole and enters the inside of the convex part 902 of the sealing airbag 9 to detect, and the sealing soft plate at the bottom end of the third pressure sensor 16 seals the accommodating hole to prevent the sealing airbag 9 from leaking air; the air leakage caused by the third pressure sensor 16 entering and exiting the accommodating hole is extremely small, and can be compensated by the supplementary inflation at the later stage. The device for driving the third pressure sensor 16 may be a mechanical expansion device pre-embedded in the inner cavity of the door frame 4 or mounted on the wall of the door frame 4, and the mechanical expansion device is in communication connection with and controlled by the centralized controller 13.
Optionally, a plurality of water spraying holes are formed in one side, facing the sealing airbag 9, of the pressing block, and the water spraying direction of the water spraying holes is inclined, so that after the door body 5 is closed and contacts the pressing block, residual dirt on the surface of the sealing airbag 9 which is not inflated is washed, and the sealing airbag 9 is prevented from being abraded and scraped due to the fact that the dirt is clamped between the sealing airbag 9 and the door body 5 after the sealing airbag 9 is inflated and expanded.
In one embodiment of the invention, the side of the first pressing block 8 arranged on the top beam of the door frame 4, which faces the sealing airbag 9, is uniformly provided with a plurality of water spray holes, the side of the first pressing block 8 and/or the second pressing block 801 arranged on the two sides of the door frame 4, which faces the sealing airbag 9, is uniformly provided with a plurality of water spray holes, and the side of the second pressing block 801 arranged on the bottom beam of the door frame 4, which faces the sealing airbag 9, is uniformly provided with a plurality of water spray holes; when the door body 5 is closed and contacts the downstream side surface of the pressing block, a sealing chamber is formed with the pressing block, the sealing air bag 9 which is not inflated and expanded at the moment is positioned in the sealing chamber, the water spraying holes spray water into the sealing chamber, and dirt is washed down by utilizing inclined water power; after the sealing air bag 9 is inflated and expanded and the door body 5 is jacked up, the sealing chamber is damaged, water with dirt flows out from the two sides of the protruding part 902, and the probability of rubbing the sealing air bag 9 by the dirt is greatly reduced.
The sealing air bag 9 is inflated to form sealing with the door body 5, so that one surface of the convex part 902 facing the inner side of the door body 5 is soaked in water, one surface of the convex part 902 facing the external environment is in the external dry environment, the sealing air bag 9 is made of rubber and is in completely different environments on two sides for a long time, and the aging of the rubber is accelerated. Optionally, a circle of telescopic guard plates are arranged on the outer edge of the downstream side of the door frame 4, the length of each guard plate is equal to the distance between the door body and the door frame when the door body is vertically closed, namely, after the door body 5 is vertically closed in place and sealed with the inflatable sealing air bag 9, the guard plates extend out of the door frame 4 and are in contact with the surface of the upstream side of the door body 5, a circle of cavity is formed between the guard plates and the inflatable sealing device, cooled compressed air is filled in the cavity, the temperature and pressure environment of a water body is simulated, and the using states of two sides of the sealing air bag 9 are balanced. Preferably, the cooled compressed air is provided by the air compressor 12 and the ventilation pipeline of the inflatable sealing device, and is input into the guard plate after being cooled and heat exchanged with the water body at the upstream of the hydraulic rotary weir gate, and no additional air supply and cooling equipment is needed.
When the door body 5 is closed, when the sealing air bag 9 is inflated to jack up the door body 5, the acting force is opposite to the pulling force direction of the hydraulic oil cylinder 2 for pulling the door body 5, and in order to save energy consumption, when the door body 5 is jacked up to generate angle change, the hydraulic oil cylinder 2 reduces the pulling force to the pressure maintaining pulling force when the door body 5 is completely and vertically closed.
The in-process is being opened to the rotatory weir door that surges, monitors the rotation angle of the door body 5 through angle sensor 7, simultaneously passes through level sensor 18 monitors the liquid level height of upper reaches side, and the regulation of realization overflow flow that can be accurate carries out effective management and control to overflow sewage.
The first pressure sensor 14 and the pressure control valve 17 are in communication connection with the hydraulic oil cylinder 2 and the centralized controller 13, and the angle sensor 7 is in communication connection with the centralized controller 13. In the process that the door body 5 is closed, when the door body 5 is blocked by the foreign matter, first pressure sensor 14 will detect the pressure increase of the 2 pulling door bodies 5 of hydraulic cylinder, angle sensor 7 will detect the angle change speed when the door body 5 is closed and slow down, when the pressure of the 2 pulling door bodies 5 of hydraulic cylinder reaches the predetermined pressure threshold value, simultaneously when angle sensor 7 detects the angle of the door body 5 and no longer changes, prove that the door body 5 is blocked by the foreign matter, centralized controller 13 controls pressure control valve 17, intermittent type nature reduces, risees hydraulic cylinder 2's pressure for the door body 5 is opened, closed action repeatedly, utilizes rivers to wash away the foreign matter, prevents the equipment jamming.
The liquid level sensor 18 is in communication connection with the integrated controller 13 and monitors the liquid level height of the upstream side of the door body 5, and the integrated controller 13 calculates the pressure head of the door body 5 in the door closing process according to the liquid level information, so that the pressure control valve 17 is controlled to output the system pressure matched with the load, the damage to equipment can be effectively reduced, and the operation of the weir gate with relatively minimum energy consumption can be guaranteed.
When the door body 5 is closed for a long time, the pressure maintaining tension of the hydraulic oil cylinder 2 may be gradually reduced or unstable, after the door body 5 is closed in place, the first pressure sensor 14 monitors the pressure maintaining tension of the hydraulic oil cylinder 2 in real time, when the tension of the hydraulic oil cylinder 2 is smaller than a set value, the integrated controller 13 automatically starts the pressure control valve 17 to increase the tension of the hydraulic oil cylinder 2, so that real-time tight pressing between the door body 5 and the sealing air bag 9 is realized, and leakage is reduced in a long-term closed state.
The hydraulic rotary weir gate has the following beneficial effects:
1. the sealing is realized to be tight: the sealing of the hydraulic rotary weir gate is changed from traditional plate type pressing sealing into inflatable sealing, the sealing air bag 9 is integrally vulcanized and formed, and a switching part is not provided with a partition and an interface and is tightly sealed; the structure of the sealing air bag 9 is formed by double-layer vulcanization, the bulge 902 is soft rubber to realize tight sealing, and the compaction 901 is woven reinforced memory rubber and is matched with two pressing blocks for use, so that the working pressure, the reliability and the service life of the sealing air bag 9 are improved;
2. reduction of damage to the sealed bladder 9: a limit stop 11 is arranged at the door frame 4 of the hydraulic rotary weir gate to prevent the door plate from being over-pressurized to cause the damage of the sealing air bag 9;
3. and (3) intelligently controlling the inflation process: under the coordination of the inflation control device and the angle sensor 7, automatic control is realized according to the position of the weir door panel and the inflation pressure;
4. and (3) accurate flow regulation: the flow can be accurately regulated by the matched monitoring of the angle sensor 7 and the liquid level sensor 18;
5. preventing foreign body clamping stagnation: in the traditional equipment, when foreign matters are blocked on a weir gate plate, the weir gate plate is stopped after alarming by setting the blocking time; according to the invention, the first pressure sensor 14, the pressure control valve 17 and the angle sensor 7 control the door body 5 and the hydraulic oil cylinder 2 to repeatedly open and close, and foreign matters are washed away by water flow;
6. protecting equipment: in the traditional equipment, the whole door closing process of the equipment is operated at the maximum pressure set by a system, and when foreign matters are stuck in the operation process, the equipment is easy to damage; in the closing process of the weir gate, the liquid level sensor 18 is matched with the pressure control valve 17, only the system pressure matched with the load is adopted, the energy consumption is low, and the equipment damage can be effectively reduced;
7. and (3) leakage prevention: according to the invention, the first pressure sensor 14 can monitor the tension of the hydraulic oil cylinder 2 after the door body 5 is in place in real time, and the tension is timely adjusted through the pressure control valve 17, so that the leakage is reduced.
Claims (10)
1. The intelligent control high-efficiency sealed hydraulic drive rotary weir gate comprises a hydraulic oil cylinder, a door frame, a door body and a base, and is characterized by further comprising a plurality of inflatable sealing devices and a sensor system, wherein the inflatable sealing devices are arranged between the door frame and the door body and comprise two pressing blocks and a sealing air bag between the two pressing blocks, the sealing air bag is fixed on the door frame through the pressing blocks, and the sealing air bag contracts into a space between the two pressing blocks after being exhausted;
the sensor system comprises a liquid level sensor arranged on the upstream side of the door body, an angle sensor arranged on a rotating shaft of the door body, a first pressure sensor for detecting the pressure of a hydraulic oil cylinder and a pressure control valve; the angle sensor is used for monitoring the rotating angle of the door body so as to adjust the overflow flow of the rotating weir gate; the angle sensor, the first pressure sensor and the pressure control valve are used for controlling the door body to be opened and closed repeatedly, and foreign matters are washed away by water flow; and the liquid level sensor and the pressure control valve are used for calculating according to the liquid level at the upstream side of the door body and ensuring the low-energy-consumption operation of the door body.
2. The hydraulically driven rotary weir gate of claim 1, wherein the inflatable sealing device is secured to the downstream side of the door frame, the inflatable sealing device comprising a pressure block and a sealing bladder, the pressure block comprising a first pressure block and a second pressure block;
the first pressing block and the second pressing block are both fixed on the surface of the downstream side of the door frame in an annular mode, the first pressing block is an outer ring, the second pressing block is an inner ring, and a sealing air bag is arranged between the first pressing block and the second pressing block; the sealing air bag surrounds the downstream side of the door frame for one circle.
3. The hydraulically driven rotary weir gate according to claim 2, wherein the thickness of the first pressing block and the second pressing block protruding out of the door frame at the lower part of the door frame is greater than the thickness of the first pressing block and the second pressing block at the upper part of the door frame, the thickness of the first pressing block and the thickness of the second pressing block are gradually increased from top to bottom, and the thickness of the first pressing block and the thickness of the second pressing block at the same horizontal height are the same, so that the downstream side surface of the pressing block integrally forms a flat inclined plane;
and sealing gaskets are arranged on the surfaces of the downstream sides of the first pressing block and the second pressing block.
4. The hydraulically operated rotary weir gate of claim 1, wherein the sealed gas cell comprises a compacting section, a convex section and an inflating nozzle, the convex section is semicircular, and when the sealed gas cell is inflated, the top of the convex section contacts and presses against the gate body;
the material of the compaction part and the material of the bulge part are both memory rubber, and the material of the charging connector is 304 stainless steel.
5. The hydraulically driven rotary weir gate of claim 4, wherein the inflatable sealing device further comprises an inflation control device, the inflation control device comprising an air compressor, a second pressure sensor, an integrated controller and a vent line, the integrated controller communicatively connecting the air compressor and the second pressure sensor, the air compressor connecting the second pressure sensor and the inflation nozzle of the sealed bladder via the vent line for inflating and deflating the sealed bladder.
6. The hydraulically driven rotary weir gate of claim 5, wherein the sealed gas bag comprises a plurality of third pressure sensors and is communicatively connected to the centralized controller for detecting the gas pressure inside the sealed gas bag in real time; the two ends of the third pressure sensor are respectively provided with a sealing soft plate, the position of the door frame corresponding to the compaction part of the sealing air bag is provided with a corresponding accommodating hole, and the third pressure sensor can stretch in and out of the accommodating hole.
7. The hydraulically driven rotary weir gate according to claim 3, wherein the first pressing block arranged on the top beam of the door frame, the first pressing block and/or the second pressing block arranged on both sides of the door frame, and the second pressing block arranged on the bottom beam of the door frame are provided with a plurality of water spraying holes on one side facing the sealing air bag, and the water spraying direction of the water spraying holes is inclined, so that the water spraying holes are used for flushing dirt remained on the surface of the sealing air bag which is not inflated after the door body is closed and contacts with the pressing blocks;
the outer edge of the downstream side of the door frame is provided with a circle of telescopic guard plate, the length of the guard plate is equal to the distance between the door body and the door frame when the door body is vertically closed, after the door body is vertically closed in place and sealed with the inflatable sealing air bag, the guard plate extends out of the door frame and is in contact with the surface of the upstream side of the door body, a circle of cavity is formed between the guard plate and the inflatable sealing device, and cooled compressed air is filled in the cavity to simulate the temperature and pressure environment of a water body and balance the use states of two sides of the sealing air bag.
8. The hydraulically driven rotary weir gate of claim 6, wherein the first pressure sensor and the pressure control valve are in communication with the hydraulic ram and the centralized controller, and the angle sensor is in communication with the centralized controller;
in the process that the door body was closed, when the door body was blocked by the foreign matter, first pressure sensor will detect the pressure increase of the hydraulic cylinder pulling door body, angle sensor will detect the angle change rate when the door body was closed and slow down, pressure when the hydraulic cylinder pulling door body reaches predetermined pressure threshold value, when angle sensor detected the angle of the door body no longer changed simultaneously, prove that the door body was blocked by the foreign matter, centralized control ware control the pressure control valve, intermittent type nature reduces, risees hydraulic cylinder's pressure for the action that the door body was opened repeatedly, was closed, utilizes rivers to wash away the foreign matter.
9. The hydraulically driven rotary weir gate according to claim 6, wherein the liquid level sensor is in communication connection with the centralized controller and monitors the liquid level height at the upstream side of the door body, and the centralized controller calculates the pressure head of the door body in the door closing process according to the liquid level information, thereby controlling the pressure control valve to output the system pressure matched with the load.
10. The hydraulic rotary weir gate according to claim 6, wherein when the door body is closed for a long time, the pressure holding pressure of the hydraulic oil cylinder may be gradually reduced or unstable, after the door body is closed in place, the first pressure sensor monitors the pressure holding pressure of the hydraulic oil cylinder in real time, and when the pulling force of the hydraulic oil cylinder is smaller than a set value, the centralized controller automatically starts the pressure control valve to increase the pulling force of the hydraulic oil cylinder, so that the real-time tight pressing between the door body and the sealing air bag is realized, and the leakage is reduced in a long-term closed state.
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