Vacuum adsorption system special for underwater anchoring

Abstract

The special vacuum adsorption system comprises a steel gas tank, a vacuum pump, a negative pressure adsorption module and a vacuum degree control module, the vacuum pump is provided with an inlet and two outlets, the inlet of the vacuum pump is connected with the negative pressure adsorption module through a suction pipe, one outlet of the vacuum pump is connected with a first drainage pipe, and the other outlet of the vacuum pump is connected with a second drainage pipe. The other outlet of the vacuum pump is connected with the inlet of the steel gas tank through a water-gas conveying pipe; the negative pressure adsorption module generates vacuum adsorption force on the underwater concrete slab through suction of a vacuum pump, and an underwater adsorption anchoring point is formed. According to the invention, the principle is scientific, the structure is simple, underwater vacuum adsorption is taken as a core, vacuum suction, water-gas separation, vacuum degree control and other technologies are utilized, two functions of vacuum adsorption and anchoring are integrated, and rapid formation and automatic maintenance of underwater non-damage anchoring points are realized; the invention provides a non-damage underwater anchoring connection point for a novel technology of non-water-cut repair construction of a deepwater channel.

Description

Technical Field

[0001] The invention belongs to the technical field of non-water-stopping emergency repair and construction for large-scale water conservancy projects, and in particular relates to a vacuum adsorption system dedicated to underwater anchoring. Background Art

[0002] At present, the construction of large-scale inter-basin water diversion projects is in full swing. At present, it is no longer possible to stop water for maintenance in the channel. The damage and repair of the channel slope lining plate is a common problem faced by the maintenance of water supply main canal projects, but there is no technology and equipment suitable for deep-water open channel repair construction without stopping water in the world. Therefore, new construction equipment and technology using underwater domes have emerged. Among them, the use of vacuum absorbers as non-destructive anchoring of domes underwater is the key technology for the stability of light underwater domes in moving water. Today, waterless vacuum adsorption devices are widely used, but the equipment and technology for realizing vacuum adsorption underwater are still blank. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a special vacuum adsorption system for underwater anchoring which has a scientific principle, is easy to operate and can achieve long-term underwater vacuum adsorption, providing a stable, reliable and damage-free anchor connection point for the "underwater dome" equipment used for non-stop water repair construction of large open channels.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: a vacuum adsorption system specially used for underwater anchoring, comprising a steel gas tank, a vacuum pump, a negative pressure adsorption module and a vacuum control module, the vacuum pump having an inlet and two outlets, the inlet of the vacuum pump being connected to the negative pressure adsorption module through a suction pipe, one outlet of the vacuum pump being connected to a first drain pipe, and the other outlet of the vacuum pump being connected to the inlet of the steel gas tank through a water gas conveying pipe; the negative pressure adsorption module generates a vacuum adsorption force on an underwater concrete slab through the suction of the vacuum pump, thereby forming an underwater adsorption anchoring point; the vacuum control module is used to monitor the vacuum degree inside the negative pressure adsorption module, and start the vacuum pump in real time to maintain the vacuum adsorption force of the negative pressure adsorption module.

[0005] The steel gas tank includes a base and a steel tank body upright on the base, a first drain pipe is provided with a first drain valve, a second drain pipe is provided at the bottom of the steel tank body, a second drain pipe is provided with a second drain valve, an exhaust pipe is provided at the top of the steel tank body, an exhaust valve is provided on the exhaust pipe, and a control valve adjacent to the steel tank body is provided on the water gas transmission pipe.

[0006] The negative pressure adsorption module includes a cover plate made of a stainless steel plate or an aluminum alloy plate. A pipe joint is fixedly provided at the center of the cover plate, the upper end of which is connected to the water vapor delivery pipe. A check valve is provided on the pipe joint. Two annular grooves are provided on the lower surface of the cover plate. An annular rubber ring is fixedly embedded in each annular groove. There is an annular gap between the two rubber rings. The bottoms of the two rubber rings protrude from the bottom surface of the cover plate to form a multi-lip vacuum adsorber.

[0007] A plurality of handles are arranged between the top surface of the cover plate and the pipe joint. The plurality of handles are evenly arranged in an array along the circumferential direction of the pipe joint, and each handle is provided with an anchor connection hole.

[0008] The power input shaft of the vacuum pump is connected with a servo motor, and the servo motor and the bottom of the vacuum pump share a support.

[0009] The vacuum control module includes a PLC controller and a pressure sensor. The pressure sensor is installed on the steel tank body to monitor the vacuum inside the steel tank body. The signal output end of the pressure sensor is connected to the signal input end of the PLC controller, and the signal output end of the PLC controller is connected to the signal input end of the servo motor.

[0010] By adopting the above technical solution, the present invention has outstanding substantive features and significant progress compared with the prior art, as follows: 1) The steel tank is used to store water and gas extracted from the negative pressure adsorption module, and is the main carrier for forming vacuum and water vapor separation; the vacuum pump is the main mechanical power facility driven by the servo motor to generate vacuum, and the negative pressure adsorption module is a special facility used to form vacuum adsorption of underwater concrete slabs, forming an underwater adsorption anchor point; the vacuum control module is used to monitor the vacuum degree inside the negative pressure adsorption module, and start the vacuum pump in real time to maintain the vacuum adsorption force inside the negative pressure adsorption module.

[0011] 2) Two annular grooves are opened on the bottom surface of the cover plate, and rubber rings are embedded in the annular grooves and bonded with waterproof super glue. The two rubber rings are set to contact the underwater concrete slab. Under the condition of internal negative pressure, the two rubber rings can greatly improve the sealing between the concrete slab and the cover plate.

[0012] 3) The handle has three functions. The first is to enhance the connection strength between the pipe joint and the cover plate; the second is to provide anchor connection holes to facilitate the connection of equipment for underwater construction or repair operations; the third is to facilitate the removal of the negative pressure adsorption module during transportation.

[0013] 4) The function of the check valve is to prevent the water sucked into the steel tank or pipeline from flowing back into the negative pressure adsorption module when the vacuum pump stops, thereby reducing or even losing the anchoring effect.

[0014] 5) The pressure sensor monitors the vacuum degree inside the steel tank in real time and transmits the pressure signal to the PLC controller. The PLC controller sets the vacuum degree range. When the vacuum degree is lower than the minimum value of the set range, the PLC controller commands the servo motor to start and make the vacuum pump work. When the vacuum degree reaches the maximum value of the set range, the PLC controller commands the servo motor to shut down and let the vacuum pump rest.

[0015] To sum up, the present invention has a scientific principle and a simple structure. It takes underwater vacuum adsorption as the core, utilizes vacuum suction, water-gas separation, vacuum degree control and other technologies, integrates the two major functions of vacuum adsorption and anchoring, and realizes the rapid formation and automatic maintenance of underwater damage-free anchoring points. The present invention provides a damage-free underwater anchoring connection point for the new technology of non-stop water repair construction of deep-water channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 The main view of the medium negative pressure adsorption module; Figure 3 yes Figure 2 A top view of Figure 4 yes Figure 3 Middle AA section view; Figure 5 It is a schematic diagram of on-site operation when the present invention is applied to a channel slope as an underwater anchoring point. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] like Figure 1-Figure 4 As shown, a vacuum adsorption system dedicated to underwater anchoring of the present invention comprises a steel gas tank 1, a vacuum pump 2, a negative pressure adsorption module 3 and a vacuum control module, the vacuum pump 2 having an inlet and two outlets, the inlet of the vacuum pump 2 being connected to the negative pressure adsorption module 3 via a suction pipe 4, one outlet of the vacuum pump 2 being connected to a first drain pipe 5, and the other outlet of the vacuum pump 2 being connected to the inlet of the steel gas tank 1 via a water gas delivery pipe 6; the negative pressure adsorption module 3 generates a vacuum adsorption force on an underwater concrete slab through the suction of the vacuum pump 2, thereby forming an underwater adsorption anchoring point; the vacuum control module is used for monitoring the vacuum degree inside the negative pressure adsorption module 3, and starting the vacuum pump 2 in real time to maintain the vacuum adsorption force of the negative pressure adsorption module 3.

[0019] The steel gas tank 1 includes a base 8 and a steel tank body 9 upright on the base 8, a first drain valve 10 is provided on the first drain pipe 5, a second drain pipe 11 is provided at the bottom of the steel tank body 9, a second drain valve 12 is provided on the second drain pipe 11, an exhaust pipe 13 is provided at the top of the steel tank body 9, an exhaust valve 14 is provided on the exhaust pipe 13, and a control valve 15 adjacent to the steel tank body 9 is provided on the water gas delivery pipe 6.

[0020] The negative pressure adsorption module 3 includes a cover plate 16 made of a stainless steel plate or an aluminum alloy plate. The cover plate 16 is rectangular (30 cm wide and 40 cm long) or circular (diameter D=35cm), a pipe joint 17 connected to the water vapor delivery pipe 6 at the upper end is fixedly provided at the center of the cover plate 16, a check valve 18 is provided on the pipe joint 17, two annular grooves are provided on the lower surface of the cover plate 16, an annular rubber ring 19 is fixedly embedded in each annular groove, an annular gap 20 is provided between the two rubber rings 19, and the bottoms of the two rubber rings 19 protrude from the bottom surface of the cover plate 16 to form a multi-lip vacuum adsorber.

[0021] A plurality of handles 21 are provided between the top surface of the cover plate 16 and the pipe joint 17 . The plurality of handles 21 are evenly arranged in an array along the circumference of the pipe joint 17 . An anchoring connection hole 22 is provided on each of the handles 21 .

[0022] The power input shaft of the vacuum pump 2 is drivingly connected to a servo motor 23 , and the servo motor 23 and the bottom of the vacuum pump 2 share a support 24 .

[0023] The vacuum control module includes a PLC controller (not shown) and a pressure sensor 25. The pressure sensor 25 is installed on the steel tank body 9 to monitor the vacuum degree inside the steel tank body 9. The signal output end of the pressure sensor 25 is connected to the signal input end of the PLC controller, and the signal output end of the PLC controller is connected to the signal input end of the servo motor 23.

[0024] by Figure 5For example, the specific working process of the present invention is as follows: a steel gas tank 1, a vacuum pump 2, and a servo motor 23 are set on the bank of the channel, and each pipeline is connected. The negative pressure adsorption module 3 is placed in the designated position under the water of the slope, the rubber ring 19 contacts the surface of the concrete slab of the slope, the control valve 15 is closed, the first drain valve 10 is opened, the servo motor 23 is started, the vacuum pump 2 starts to work, the suction pipe 4 extracts the water inside the negative pressure adsorption module 3 and discharges it through the first drain pipe 5. When the amount of water discharged from the first drain pipe 5 becomes smaller, the control valve 15 is opened, the first drain valve 10 is closed, and the vacuum pump 2 draws the gas-water mixture into the steel tank body 9. At this time, the bottom surfaces of the two rubber rings 19 are tightly adsorbed on the concrete slab of the slope, and a vacuum is formed inside. The steel tank body 9 separates gas and water, and the gas is discharged from the exhaust pipe 13 at the top, and the water is temporarily stored at the bottom of the steel tank body 9. The second drain valve 12 is opened at regular intervals to discharge the water and mud in the steel tank body 9. The pressure sensor 25 monitors the vacuum degree inside the steel tank 9 in real time and transmits the pressure signal to the PLC controller. The PLC controller sets the vacuum degree range. When the vacuum degree is lower than the minimum value of the set range, the PLC controller commands the servo motor 23 to start and make the vacuum pump 2 work. When the vacuum degree reaches the maximum value of the set range, the PLC controller commands the servo motor 23 to shut down and make the vacuum pump 2 shut down and rest. After the negative pressure adsorption module 3 is anchored to the slope, the equipment to be used for underwater construction or repair operations is connected to the anchor connection hole 22 on the handle 21, thereby providing a stable, safe and reliable anchor connection point for the equipment for underwater construction or repair operations.

[0025] The above two embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A vacuum adsorption system for underwater anchoring, characterized in that: It includes a steel gas tank, a vacuum pump, a negative pressure adsorption module and a vacuum control module. The vacuum pump has an inlet and two outlets. The inlet of the vacuum pump is connected to the negative pressure adsorption module through a suction pipe, one outlet of the vacuum pump is connected to a first drain pipe, and the other outlet of the vacuum pump is connected to the inlet of the steel gas tank through a water gas transmission pipe; the negative pressure adsorption module generates a vacuum adsorption force on the underwater concrete slab through the suction of the vacuum pump to form an underwater adsorption anchoring point; the vacuum control module is used to monitor the internal vacuum degree of the negative pressure adsorption module, and start the vacuum pump in real time to maintain the vacuum adsorption force of the negative pressure adsorption module.

2. The vacuum adsorption system for underwater anchoring according to claim 1 is characterized in that: The steel gas tank includes a base and a steel tank body upright on the base, a first drain pipe is provided with a first drain valve, a second drain pipe is provided at the bottom of the steel tank body, a second drain pipe is provided with a second drain valve, an exhaust pipe is provided at the top of the steel tank body, an exhaust valve is provided on the exhaust pipe, and a control valve adjacent to the steel tank body is provided on the water gas transmission pipe.

3. The vacuum adsorption system for underwater anchoring according to claim 1 or 2, characterized in that: The negative pressure adsorption module includes a cover plate made of a stainless steel plate or an aluminum alloy plate. A pipe joint is fixedly provided at the center of the cover plate, the upper end of which is connected to the water vapor delivery pipe. A check valve is provided on the pipe joint. Two annular grooves are provided on the lower surface of the cover plate. An annular rubber ring is fixedly embedded in each annular groove. There is an annular gap between the two rubber rings. The bottoms of the two rubber rings protrude from the bottom surface of the cover plate to form a multi-lip vacuum adsorber.

4. The vacuum adsorption system for underwater anchoring according to claim 3 is characterized in that: A plurality of handles are arranged between the top surface of the cover plate and the pipe joint. The plurality of handles are evenly arranged in an array along the circumferential direction of the pipe joint, and each handle is provided with an anchor connection hole.

5. The vacuum adsorption system for underwater anchoring according to claim 1 or 2, characterized in that: The power input shaft of the vacuum pump is connected with a servo motor, and the servo motor and the bottom of the vacuum pump share a support.

6. The vacuum adsorption system for underwater anchoring according to claim 5 is characterized in that: The vacuum control module includes a PLC controller and a pressure sensor. The pressure sensor is installed on the steel tank body to monitor the vacuum inside the steel tank body. The signal output end of the pressure sensor is connected to the signal input end of the PLC controller, and the signal output end of the PLC controller is connected to the signal input end of the servo motor.

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