Underwater drainage port blocking structure

Abstract

The present invention provides an underwater drainage port plugging device and a plugging structure. Through the cooperation relationship between the lower clamping plate and the lower positioning pin, the upper clamping plate and the upper positioning pin, and the upper clamping plate and the hydraulic cylinder, the underwater drainage port plugging device can be limited to the drainage pipeline, and the sealing pressure of the underwater drainage port plugging device and the drainage port is loaded on the drainage port through the hydraulic system, so as to achieve a safe and reliable water-stopping effect, and achieve the effect of underwater automatic closure of the drainage port that does not rely on personnel. With the help of the pressure-maintaining effect of the hydraulic system, the long-term plugging effect of the drainage port is achieved. In addition, the technician only needs to stand on a safe operating platform, and with the help of a special lifting system, multiple monitoring devices, end touch sensors and an underwater electric walking system, the automatic plugging function of the underwater drainage port can be realized.

Description

[0001] This application is a divisional application of the invention patent application with application number 2020106055643;

[0002] Filing date of original application: 2020-06-29;

[0003] Application number of the original application: 2020106055643;

[0004] The name of the original application: An underwater drainage outlet sealing device and sealing structure. Technical Field

[0005] The invention belongs to the technical field of water conservancy and hydropower, and in particular relates to an underwater water intake and drainage port blocking device and a blocking structure. Background Art

[0006] In water conservancy and hydropower projects, thermal power projects, mining projects or port and navigation projects, a large number of water supply and drainage systems are designed to meet the water and drainage needs of equipment and users. The water intakes or drainage outlets of these water intake and drainage systems are mostly set underwater to meet the suction range and safe operation needs of water supply equipment, or to meet certain water level drawdown needs to avoid air entering the pipeline. In the past, the inspection and disassembly of the first inspection valve on the pipeline after the water intake and drainage outlet of many projects were all achieved by setting a steel gate at the water intake and drainage outlet, and closing the steel gate to cut off the external water source, that is, setting a steel gate at the water intake and drainage outlet, building concrete piers and guide rails, and a hydraulic hoist for lifting, as well as a platform and channel for inspection. This requires the addition of more facilities and equipment to ensure that the water flow in the pipeline is cut off to meet the disassembly and assembly needs of the inspection valve. Usually, the water intake and drainage outlets of these projects are relatively large in scale and size. At the same time, convenient transportation and layout conditions are also required. The projects can invest relatively large investments, which may not be suitable for water intakes with relatively small diameters. If the water intakes are arranged at a deeper position underwater, it will be more difficult to achieve.

[0007] Although the equipment maintenance in previous projects mostly needs to be achieved by closing the steel gate, due to the limitation of layout conditions, it is impossible to set the necessary steel gate at the water inlet to isolate the equipment and valves of the maintenance system. There are still many projects where the first valve or equipment after the water inlet of the water supply and drainage system cannot be repaired. Some projects set up a temporary cofferdam around the water inlet to meet the needs of water inlet plugging, but the cost is very high, requiring a lot of manpower, material resources and energy, and it also takes a long time. After the equipment maintenance in the water inlet is completed, it needs to be demolished by blasting, which may endanger the safe operation of the water inlet. The plugging of some water inlets relies on professional divers to dive underwater and connect the plugs on the water inlet to achieve the plugging of the water inlet. Due to the unknown conditions underwater, the vision is relatively poor, there are no facilities to rely on for underwater operations, the operation is difficult, and there is a certain water pressure, which brings a relatively large risk to divers when working underwater, and even easily causes personal injury. Summary of the invention

[0008] The purpose of the present invention is to provide an underwater water intake and drainage port blocking device in view of the deficiencies in the prior art.

[0009] To this end, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0010] The hydraulic cylinder is connected with the hydraulic operating station through the hydraulic operating pipeline.

[0011] While adopting the above technical solutions, the present invention may also adopt or combine the following further technical solutions:

[0012] As a preferred technical solution of the present invention: a guide rod with a guide wheel is provided between the upper end and the lower end of the sealing plate and the hydraulic cylinder.

[0013] As a preferred technical solution of the present invention: a sealing annular boss is provided on the side of the sealing plate that contacts the drainage port of the drainage pipeline, and a soft sealing ring is fixed on the sealing annular boss.

[0014] As a preferred technical solution of the present invention: a hydraulic cylinder guide wheel is provided at the bottom of the hydraulic cylinder.

[0015] Another object of the present invention is to provide an underwater water intake and drainage port blocking structure to address the deficiencies in the prior art.

[0016] An underwater drainage port plugging structure, the underwater drainage port plugging structure includes the underwater drainage port plugging device described above, and also includes an operating platform, the operating platform is provided with a lifting device, the lifting device is provided with a lifting rod, the other end of the lifting rod is provided with a lifting wire rope, the lower end of the lifting wire rope is provided with two lifting ropes, one of which is connected to the upper clamping plate of the underwater drainage port plugging device, and the other is connected to the hydraulic cylinder, and the lengths of the two lifting ropes ensure that the upper clamping plate and the hydraulic cylinder are turned over; the underwater drainage port plugging structure also includes a drainage pipeline, The drainage pipeline is provided with an upper baffle ring and a lower baffle ring of the water intake near the water intake port, and the upper baffle ring and the lower baffle ring of the water intake form a closed baffle ring surrounding the drainage pipeline. The upper baffle ring and the lower baffle ring of the water intake are respectively provided with an upper positioning pin and a lower positioning pin on the side facing away from the underwater water intake and drainage port sealing device; the length of the upper clamping plate is longer than that of the lower clamping plate and / or the length of the upper positioning pin is shorter than that of the lower positioning pin so that the upper clamping plate hinged to the hydraulic cylinder is flipped over and fitted onto the upper positioning pin after being fitted onto the lower positioning pin with the lower clamping plate.

[0017] While adopting the above technical solutions, the present invention may also adopt or combine the following further technical solutions:

[0018] As a preferred technical solution of the present invention: the underwater water inlet and outlet blocking structure also includes a guide rail, and the guide rail is arranged below the water inlet and outlet of the drainage pipeline.

[0019] As a preferred technical solution of the present invention: the hydraulic operating station is provided with a hydraulic operating oil inlet pipe and a hydraulic operating oil drain pipe, both of which are connected to the hydraulic operating pipeline, an electric contact pressure gauge is provided on the hydraulic operating pipeline, and the other end of the hydraulic operating pipeline is connected to the hydraulic cylinder.

[0020] As a preferred technical solution of the present invention: a drain outlet fixing plate is provided at the outer edge of the drain outlet of the drainage pipeline, and the drain outlet fixing plate cooperates with a sealing plate of the underwater drain outlet sealing device to achieve sealing of the drain outlet.

[0021] As a preferred technical solution of the present invention: the underwater drainage outlet sealing structure also includes a bottom monitoring device, an end monitoring device and an end touch sensor, and the bottom monitoring device, the end monitoring device and the end touch sensor are all arranged on the underwater drainage outlet sealing device, the bottom monitoring device is arranged toward the bottom of the underwater drainage outlet sealing device, the end monitoring device is arranged toward the direction of the rock wall where the drainage pipe is located, and the end touch sensor is arranged on the outer end of the lower clamping plate of the underwater drainage outlet sealing device.

[0022] The present invention provides an underwater drainage outlet blocking device and a blocking structure. Through the cooperation relationship between the lower clamping plate and the lower positioning pin, the upper clamping plate and the upper positioning pin, and the upper clamping plate and the hydraulic cylinder, the underwater drainage outlet blocking device can be limited to the drainage pipeline, and the sealing pressure of the underwater drainage outlet blocking device and the drainage outlet is loaded on the drainage outlet through the hydraulic system, thereby achieving a safe and reliable water-stopping effect, achieving an underwater automatic sealing effect of the drainage outlet that is independent of personnel, and achieving a long-term blocking effect of the drainage outlet with the help of the pressure-maintaining effect of the hydraulic system. In addition, technicians only need to stand on a safe operating platform and use a special lifting system, multiple monitoring devices, end touch sensors and underwater electric walking system to realize the automatic sealing function of the underwater drainage outlet. Compared with the installation of large steel gates and large temporary cofferdams, it saves a lot of investment, avoids personnel operating underwater, and ensures the safety of personnel's lives. At the same time, different types of underwater drainage outlet sealing devices can be designed for drainage outlets of different calibers, and the underwater drainage outlet sealing devices can be serialized and commercialized. Moreover, this technical product can be reused, which greatly saves investment. It is an energy-saving product and is worthy of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A vertical cross-sectional view of the underwater water intake and drainage port blocking structure provided by the present invention.

[0024] Figure 2 This is a plan view of the underwater water intake and drainage port blocking structure provided by the present invention.

[0025] Figure 3-8 This is a diagram illustrating the sealing process of the underwater drainage outlet sealing structure. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] The equipment of the lifting subsystem of the underwater drainage outlet blocking device mainly consists of an operating platform 1, a lifting device 3, a lifting rod 4, a lifting wire rope 5, a lifting buckle 13, a lifting rope 14 connected to the upper clamping plate of the drainage outlet blocking device, and a lifting rope 20 connected to the hydraulic cylinder. The main function of the lifting subsystem is to lift the drainage outlet blocking device and drag the drainage outlet blocking device to the blocking position with the assistance of the video system. The length of the lifting rope 14 connected to the upper clamping plate of the drainage outlet blocking device is shorter than the lifting rope 20 connected to the hydraulic cylinder, and a certain angle is formed so that the drainage outlet blocking device can be smoothly dragged to the predetermined blocking position, and the upper clamping ring 12 can be smoothly and freely placed in a horizontal state when the lifting wire rope 5 remains in a stress-free state.

[0028] The thrust structure and guide rail system on the drainage outlet are mainly composed of the drainage pipeline 2, the upper retaining ring 16 of the drainage outlet, the upper positioning pin 17, the drainage outlet fixing plate 18, the drainage outlet 19, the lower retaining ring 32 of the drainage outlet, the lower positioning pin 33, and the bottom guide rail 29 of the drainage outlet. The bottom guide rail 29 of the drainage outlet mainly provides a road and guide for the bottom guide wheel 30 of the hydraulic cylinder at the front and rear ends of the drainage outlet blocking device to move under the drive of the guide wheel driving motor 31; the upper retaining ring 16 of the drainage outlet, the upper positioning pin 17, the drainage outlet fixing plate 18, the drainage outlet 19, the lower retaining ring 32 of the drainage outlet, the lower positioning pin 33 and other components mainly provide positioning for the drainage outlet blocking device and bear the axial force generated when the drainage outlet blocking device blocks the drainage outlet.

[0029] The drainage outlet blocking device mainly consists of an upper sleeve hole 11, an upper clamping plate 12, a lifting rope 14 connected to the upper clamping plate, a lifting rope 20 connected to the hydraulic cylinder, a hydraulic cylinder 21, a guide rod 22 with a guide wheel, a hydraulic soft bag or a telescopic joint 23, an operating fluid 24 in the hydraulic cylinder cavity, a sealing plate 25, a sealing annular boss 26, a soft sealing ring 27, a bottom monitoring device 28, a hydraulic cylinder bottom guide wheel 30, a guide wheel driving motor 31, a lower sleeve hole 34, a lower clamping plate 35, an end monitoring device 36, and a hydraulic blocking end touch sensor 37.

[0030] The guide wheel 30 at the bottom of the hydraulic cylinder and the guide wheel driving motor 31 are mainly used to enable the drainage outlet sealing device to move on its own when it is lowered onto the guide rail 29 where the drainage outlet 19 is located, and under the drive of the guide wheel driving motor 31, the drainage outlet sealing device is pulled along the guide rail 29 until the hydraulic sealing end touches the sensor 37 to send a signal, and under the action of the control system, the guide wheel driving motor 31 is stopped.

[0031] The bottom monitoring device 28 and the end monitoring device 36 can guide the drainage outlet blocking device to move along a predetermined route during the up and down movement and action movement, avoiding collision with the drainage outlet facilities and components, and also avoiding damage to the components on the drainage outlet blocking device.

[0032] The upper sleeve hole 11, the upper clamping plate 12, the hinged part 15, the lower sleeve hole 34, and the lower clamping plate 35 constitute the sealing coupling locking part of the drainage port plugging device and the drainage port, and bear the force generated when the drainage port is plugged and sealed. When the drainage port plugging device touches the hydraulic plugging end touch sensor 37 at the end, the drainage port plugging device moves upward as a whole, touches the drainage port, and moves toward the end of the drainage port 19 until the lower sleeve hole 34 is completely engaged with the lower positioning pin 33 on the drainage port, and the lifting wire rope 5 is loosened; the upper sleeve hole 11 and the upper clamping plate 12 are matched with the upper retaining ring 16 and the upper positioning pin 17 of the drainage port.

[0033] The drain port fixing plate 18, drain port 19, hydraulic cylinder 21, guide rod 22 with guide wheel, hydraulic bladder or telescopic joint 23, operating fluid 24 in the inner cavity of hydraulic cylinder, sealing plate 25, sealing annular boss 26 and soft sealing ring 27 constitute the sealing part of the drain port blocking device. When the upper sleeve hole 11 and the upper clamping plate 12 are mated with the upper retaining ring 16 and the upper positioning pin 17 of the drain port, the hydraulic operating system of the drain port blocking device is started, and the hydraulic cylinder 21 is pressurized through the hydraulic pipeline 10; the hydraulic bladder or telescopic joint 23, under the action of the high-pressure operating fluid, pushes the sealing plate 25 to move toward the end of the drain port 19 and docks with the drain port fixing plate 18 of the drain port 19; under the continuous action of the high-pressure operating fluid, the upper sleeve hole 11 and the upper clamping plate 12 are mated with the upper retaining ring 16 and the upper positioning pin 17 of the drain port and the lower sleeve hole 3 4 and the lower positioning pin 33 on the drainage port are compacted and contacted; under the further continuous action of the high-pressure operating fluid, the sealing plate 25 pushes the sealing annular boss 26 and the soft sealing ring 27 and the drainage port fixing plate 18 to continuously press each other, playing a water-stopping role, until the drainage port 19 is completely blocked, the electric contact pressure gauge 9 can monitor whether the pressure of the hydraulic system is normal, and the hydraulic system can start the pressure oil pump of the hydraulic system according to the signal sent by the electric contact pressure gauge 9 to ensure that the hydraulic cylinder 21 always has normal operating force, and ensure that the drainage port 19 can be effectively and safely blocked for a long time. The guide rod 22 with a guide wheel is in close contact with the inside of the hydraulic cylinder 21, which can ensure that the sealing plate 25 will not deviate with a large error in the process of approaching the drainage port 19.

[0034] The hydraulic operation oil inlet pipe 6, the hydraulic operation oil discharge pipe 7, the hydraulic operation station 8, the electric contact pressure gauge 9, the hydraulic operation pipeline 10, the hydraulic soft bag or the telescopic joint 23, the operating fluid 24 in the inner cavity of the hydraulic cylinder and the sealing plate 25 constitute the hydraulic filling and discharging system of the drainage port blocking device. During the blocking process of the drainage port blocking device, the hydraulic operation station 8 is started to fill the hydraulic cylinder of the drainage port blocking device with oil to block the drainage port; according to the signal sent by the electric contact pressure gauge 9, the hydraulic cylinder is pressurized, and the sealing of the drainage port remains effective and plays a long-term blocking role. When the drainage port is blocked, the hydraulic operation oil inlet pipe 6 and the hydraulic operation oil discharge pipe 7 on the hydraulic operation station 8 are switched, the hydraulic operation oil inlet pipe 6 is closed, and the hydraulic operation oil discharge pipe 7 is connected, so that the operating fluid 24 in the inner cavity of the hydraulic cylinder flows back to the hydraulic operation station 8. The hydraulic soft bag or the telescopic joint 23 moves in the opposite direction, so that the drainage port 19 has both the inlet and outlet functions again.

[0035] The implementation methods of the underwater drainage port plugging device are mainly divided into two situations:

[0036] 1) The implementation steps of blocking the underwater drainage outlet are as follows: The first step is Figure 1 , Figure 3 As shown, the drainage port blocking device is hoisted from the operating platform into the water using the lifting system of the drainage port blocking device. In the second step, the drainage port blocking device is placed on the drainage port bottom guide rail 29 at the bottom of the platform where the drainage port 19 is located using the images fed back by the bottom monitoring device 28 and the end monitoring device 36 in the water, as shown in FIG. Figure 4 The third step is to start the guide wheel drive motor 31 on the guide wheel 30 at the bottom of the drainage port plugging device to drive the drainage port plugging device to move toward the end of the drainage port. During the movement, the direction can be corrected with the help of the image fed back by the end monitoring device 36, until the hydraulic plugging end touch sensor 37 sends a touch feedback signal, and the guide wheel drive motor 31 stops running. The final position is as shown in FIG. Figure 5 The fourth step is to use the lifting system to lift the drainage port plugging device as a whole, and with the help of the image fed back by the end monitoring device 36, lift it until it reaches the position shown in the figure. Figure 6 The device moves away from the drainage port until the lower sleeve hole 34, the lower clamping plate 35, the lower retaining ring 32 and the lower positioning pin 33 on the drainage port are fully engaged. Figure 7In the position shown, slowly lower the lifting rope 14 connected to the upper clamping plate and the lifting rope 20 connected to the hydraulic cylinder, so that the upper sleeve hole 11 and the upper clamping plate 12 are turned down to a horizontal position. The fifth step is to start the hydraulic operating station 8 placed on the operating platform 1, and pressurize the inner cavity of the hydraulic cylinder of the drainage port blocking device through the hydraulic operation oil inlet pipe 6. The operating fluid 24 in the inner cavity of the hydraulic cylinder pushes the sealing plate 25, which is supported and guided by the guide rod with a guide wheel, to the drainage port fixing plate 18 close to the drainage port 19, and under the engagement of the upper sleeve hole 11, the upper clamping plate 12 and the upper retaining ring 16 and the upper positioning pin 17 of the drainage port, and the lower sleeve hole 34, the lower clamping plate 35 and the lower retaining ring 32 and the lower positioning pin 33 of the drainage port, the sealing effect is produced by the mutual extrusion of the sealing plate 25, the sealing annular boss 26, the soft sealing ring 27 and the drainage port fixing plate 18. The final position is as shown in FIG. Figure 8 The sixth step is to use the signal of the electric contact pressure gauge 9 set on the hydraulic system to realize the continuous pressure maintenance of the hydraulic system, so as to achieve the long-term sealing and water-stopping effect of the drainage port plugging device, and when the hydraulic system is depressurized, the hydraulic pump of the hydraulic system can be started to charge the hydraulic system to achieve the pressure maintenance effect.

[0037] 2) The implementation steps for canceling the blocking of the underwater drainage outlet are as follows: After the equipment in the water supply and drainage system is replaced, the drainage outlet blocking device that blocks the underwater drainage outlet needs to be removed. The specific steps are: The first step is to switch the pressure-operated oil inlet pipe 6 and the hydraulic-operated oil drain pipe 7 on the hydraulic operating station 8, that is, close the pressure-operated oil inlet pipe 6, connect the hydraulic-operated oil drain pipe 7, and discharge the hydraulic fluid in the inner cavity of the hydraulic cylinder back to the hydraulic operating station 8. Under the action of external pressure water near the drainage outlet, the sealing plate 25 squeezes the hydraulic bladder or telescopic joint 23 back into the hydraulic cylinder 21. The second step is to adjust the angle between the lifting rope 14 connected to the upper clamping plate and the lifting rope 20 connected to the hydraulic cylinder by using the lifting rod 4 of the lifting device 3 under the action of the video image, and use the space between the sealing plate 25 and the drainage port fixing plate 18 to drag the drainage port blocking device toward the drainage port 19 until the upper sleeve hole 11 and the upper clamping plate 12 are separated from the upper retaining ring 16 and the upper positioning pin 17 of the water intake port, and the lower sleeve hole 34 and the lower clamping plate 35 are separated from the lower retaining ring 32 and the lower positioning pin 33 of the water intake port. The third step is to slowly lower the lifting wire rope 5 so that the drainage port blocking device slowly descends to the drainage port bottom guide rail 29 at the bottom of the drainage port 19. Start the guide wheel drive motor 31 on the guide wheel 30 at the bottom of the hydraulic cylinder to drive the entire drainage port blocking device to move away from the drainage port 19 until the entire drainage port blocking device is separated from the entire drainage port 19. The fourth step is to turn off the guide wheel drive motor 31 and start the lifting mechanism of the lifting device 3 until the entire water intake and drainage port blocking device emerges from the water surface and is transferred to the entire operating platform 1.

[0038] The principle and structure diagram of this technical invention are detailed in Figure 1 and Figure 2 , Figure 1 Layout of underwater drainage outlet plugging device (section view) and Figure 2 This is the layout diagram (plan view) of the underwater drainage port plugging device. The plugging process of the underwater drainage port can be referred to Figure 3~Figure 8 , the process of canceling the blocking of the underwater drainage outlet is no longer represented by a schematic diagram.

[0039] The underwater drainage port plugging device can also be used in projects and engineering such as the petrochemical industry or other industries where personnel cannot dive to perform plugging.

[0040] The above-mentioned specific implementation methods are used to explain the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. An underwater water inlet and outlet blocking structure, characterized in that: It comprises an operating platform, an underwater drainage port plugging device and a drainage pipeline. The operating platform is provided with a lifting device, the lifting device is provided with a lifting rod, the other end of the lifting rod is provided with a lifting wire rope, the lower end of the lifting wire rope is provided with two lifting ropes, one of which is connected to the upper clamping plate of the underwater drainage port plugging device, and the other is connected to the hydraulic cylinder, and the lengths of the two lifting ropes ensure that the upper clamping plate and the hydraulic cylinder are turned over; The drainage pipeline is provided with an upper baffle ring and a lower baffle ring of the water intake near the water intake and drainage outlet, and the upper baffle ring and the lower baffle ring of the water intake form a closed baffle ring surrounding the drainage pipeline, and the upper baffle ring and the lower baffle ring of the water intake are respectively provided with an upper positioning pin and a lower positioning pin on the side facing away from the underwater water intake and drainage outlet blocking device; the length of the upper clamping plate is longer than the length of the lower clamping plate and / or the length of the upper positioning pin is shorter than the length of the lower positioning pin so that after the lower clamping plate is fitted onto the lower positioning pin, the upper clamping plate hinged to the hydraulic cylinder is turned over and fitted onto the upper positioning pin; The underwater drainage port plugging device is used to plug the drainage pipe orifice, and the underwater drainage port plugging device includes a hydraulic cylinder, the hydraulic cylinder is hinged with an upper clamping plate, the hydraulic cylinder and the lower clamping plate form an integral structure, the upper clamping plate and the lower clamping plate are both semi-annular to form a closed surround of the drainage pipe, the upper clamping plate is provided with an upper sleeve hole to cooperate with an upper positioning pin provided on the drainage pipe, and the lower clamping plate is provided with a lower sleeve hole to cooperate with a lower positioning pin provided on the drainage pipe to limit the underwater drainage port plugging device to the drainage pipe, a sealing plate is provided in the hydraulic cylinder, and a hydraulic soft bag or a hydraulic expansion joint is provided between the sealing plate and the hydraulic cylinder to push the sealing plate to the drainage port of the drainage pipe and plug the drainage port of the drainage pipe, and the hydraulic cylinder is connected to the hydraulic operation station through a hydraulic operation pipeline; A guide rod with a guide wheel is arranged between the upper end and the lower end of the sealing plate and the hydraulic cylinder.

2. The underwater water inlet and outlet blocking structure according to claim 1, characterized in that: A sealing annular boss is provided on one side of the sealing plate that contacts the drainage port of the drainage pipeline, and a soft sealing ring is fixed on the sealing annular boss.

3. The underwater water inlet and outlet blocking structure according to claim 2 is characterized in that: A hydraulic cylinder guide wheel is arranged at the bottom of the hydraulic cylinder.

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