Plugging device for through hole of energy dissipation pool

Abstract

The utility model discloses a plugging device for a through hole of an energy dissipation pool, which comprises a plugging mechanism, a power mechanism and a fixing mechanism, the plugging mechanism and the fixing mechanism are both connected with the power mechanism, the shape of the plugging mechanism is matched with that of the through hole, and the plugging mechanism has a first state and a second state. The volume of the plugging mechanism in the first state is smaller than that of the plugging mechanism in the second state, and the power mechanism is used for extending the plugging mechanism in the first state to the second state; the fixing mechanism is used for supporting the inner wall of the energy dissipation pool defining the through hole. According to the plugging device, the plugging mechanism, the power mechanism and the fixing mechanism are arranged and matched with one another, so that the plugging mechanism can effectively plug the through hole, operation is simple, water flow on one side of the through hole can be effectively prevented from leaking, water tightness after plugging is good, and the plugging effect is good. And an adaptive operation environment can be provided for subsequent operation.

Description

Technical Field

[0001] The utility model specifically relates to a blocking device for a through hole of an energy dissipation pool. Background Art

[0002] In the prior art, the drainage pipelines of the important plant water system and SRU system of the nuclear power plant are equipped with energy dissipation pools in the pump room to reduce the kinetic energy of the seawater discharged from the pipelines of the system. Through holes are opened on the pool walls between adjacent dissipation pools to connect the adjacent energy dissipation pools, so that the water in the dissipation pool of the running train can compensate for the potential leakage of the downstream pipeline of the pump corresponding to the dissipation pool of the out-of-service train.

[0003] A sluice gate is set on each side of the through hole to isolate two adjacent dissipation pools. It was found on site that some of the sluice gates between the dissipation pools were leaking, resulting in the dissipation pools of the out-of-service pools being unable to be isolated and emptied. Utility Model Content

[0004] In view of this, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a blocking device for the through hole of an energy dissipation pool, which can effectively block the water flow on one side of the through hole and provide a suitable working environment for its subsequent operations.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealing device for a through hole of an energy dissipation pool, comprising a sealing mechanism, a power mechanism and a fixing mechanism, wherein the sealing mechanism and the fixing mechanism are both connected to the power mechanism, the shape of the sealing mechanism matches the shape of the through hole, the sealing mechanism comprises a first state and a second state, the volume of the sealing mechanism in the first state is smaller than the volume of the sealing mechanism in the second state, the power mechanism is used to extend the sealing mechanism in the first state to the second state; the fixing mechanism is used to support the inner wall of the energy dissipation pool that encloses the through hole.

[0007] According to some preferred implementation aspects of the utility model, the sealing mechanism includes a fixed frame and a rubber strip, the fixed frame includes two parallel first side panels and two parallel second side panels, the first side panels are perpendicular to the second side panels, and the two second side panels are respectively located at both ends of the first side panels.

[0008] According to some preferred implementation aspects of the utility model, the power mechanism includes a piston rod, a fixing plate fixedly arranged at one end of the piston rod close to the fixing frame, a plurality of hydraulic jacks fixedly arranged on the outer wall of the piston rod, and a pressure relief valve arranged at one end of the piston rod away from the blocking mechanism, the interior of the fixing frame is used to accommodate the plurality of hydraulic jacks, and the fixing plate is located outside the fixing frame and close to a side of the fixing frame away from the fixing mechanism.

[0009] According to some preferred implementation aspects of the utility model, four hydraulic jacks are provided corresponding to the two first side plates and the two second side plates.

[0010] According to some preferred implementation aspects of the utility model, the ends of the two hydraulic jacks arranged corresponding to the two first side panels that are close to each other are fixedly connected to the outer wall of the piston rod, the ends of the two hydraulic jacks that are away from each other are respectively abutted against the inner walls of the corresponding first side panels, and the two hydraulic jacks arranged corresponding to the two first side panels are located in the same vertical direction; the ends of the two hydraulic jacks arranged corresponding to the two second side panels that are close to each other are fixedly connected to the outer wall of the piston rod, the ends of the two hydraulic jacks that are away from each other are respectively abutted against the inner walls of the corresponding second side panels, and the two hydraulic jacks arranged corresponding to the two second side panels are located in the same horizontal direction.

[0011] According to some preferred implementation aspects of the utility model, the rubber strip includes a first rubber strip, a second rubber strip and a third rubber strip, the first rubber strip is arranged in a one-to-one correspondence with the first side panel, the second rubber strip is arranged in a one-to-one correspondence with the second side panel, and the third rubber strip is arranged in a corresponding manner with the fixed plate, the inner side surface of the first rubber strip is in contact with the outer side surface of the first side panel, the inner side surface of the second rubber strip is in contact with the outer side surface of the second side panel, and the inner side surface of the third rubber strip is in contact with the outer side surface of the fixed plate, and when the sealing mechanism is in the first state and / or the second state, the outer side surfaces of the first rubber strip, the second rubber strip and the third rubber strip are in contact with the inner wall of the energy dissipation pool enclosing the through hole; the area of ​​the first rubber strip is larger than the area of ​​the first side panel, the area of ​​the second rubber strip is larger than the area of ​​the second side panel, and the area of ​​the third rubber strip is larger than the area of ​​the fixed plate; the volume of the space enclosed by the third rubber strip and the two first rubber strips and the two second rubber strips is larger than the volume of the fixed frame. In some embodiments of the utility model, a lifting ring is also provided on the piston rod, and the lifting ring is used to fix a safety rope. After the sealing device is installed into the through hole, the other end of the safety rope can be fixed to a safe position to prevent the entire sealing device from falling.

[0012] According to some preferred implementation aspects of the utility model, the power mechanism further includes a first bolt assembly, the first bolt assembly penetrates the fixing plate and the third rubber strip in a thickness direction, and the first bolt assembly is used to fix the rubber strip to the fixing plate. The provision of the first bolt assembly is conducive to fixing the rubber strip and preventing it from falling off.

[0013] According to some preferred implementation aspects of the utility model, the fixing mechanism includes a positioning frame and a plurality of second bolt assemblies arranged on the side wall of the positioning frame, the shape of the positioning frame is the same as the shape of the through hole, the width of the positioning frame is smaller than the width of the through hole, and the height of the positioning frame is smaller than the height of the through hole.

[0014] According to some preferred implementation aspects of the utility model, the positioning frame is sleeved on the outer periphery of the piston rod, the positioning frame is close to the side of the fixing frame away from the through hole, and the end of the second bolt assembly away from the piston rod is located outside the positioning frame for contact with the inner wall of the energy dissipation pool enclosing the through hole; the distance from the end of the second bolt assembly away from the piston rod to the corresponding inner wall of the positioning frame is 80 to 200 mm. The second bolt assembly is used to support the side wall of the energy dissipation pool to avoid deformation of the side wall of the energy dissipation pool around the through hole due to the influence of water pressure, which is not conducive to the blocking of the through hole.

[0015] According to some preferred implementation aspects of the utility model, the power mechanism also includes an oil pump, a distributor and a plurality of oil pipes, the oil pipes are arranged in a one-to-one correspondence with the hydraulic jacks, one end of each of the oil pipes is connected to the corresponding hydraulic jack, and the other end of each of the oil pipes is connected to an interface of the distributor.

[0016] Due to the adoption of the above technical scheme, compared with the prior art, the benefits of the utility model are: the utility model is a sealing device for the through-hole of the energy dissipation pool, by setting a sealing mechanism, a power mechanism and a fixing mechanism, the components cooperate with each other, so that the sealing mechanism can effectively seal the through-hole, the operation is simple, and the water leakage on one side of the through-hole can be effectively avoided. The energy dissipation pool after sealing has good water tightness, which is conducive to providing an adapted working environment for its subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure when the blocking device in the preferred embodiment of the utility model is not installed in the through hole;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the blocking device in the preferred embodiment of the utility model after hiding a first side plate;

[0020] Figure 3 This is a schematic diagram of the top view of the structure of the blocking device in the preferred embodiment of the utility model after a first side plate is hidden;

[0021] Among them, the figure markings are: sealing mechanism-1, first side plate-11, second side plate-12, first rubber strip-13, second rubber strip-14, third rubber strip-15, power mechanism-2, piston rod-21, hydraulic jack-22, pressure relief valve-23, lifting ring-24, fixing plate-25, fixing mechanism-3, positioning frame-31, second bolt assembly-32, through hole-4. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] like Figures 1 to 3 As shown, the blocking device of this embodiment includes a blocking mechanism 1, a power mechanism 2 and a fixing mechanism 3. The blocking mechanism 1 and the fixing mechanism 3 are both connected to the power mechanism 2, and the shape of the blocking mechanism 1 is consistent with the shape of the through hole 4. The cross-section of the through hole 4 in this embodiment is a square.

[0024] Furthermore, the blocking mechanism 1 includes a fixing frame and a rubber strip. The fixing frame includes two parallel first side panels 11 and two parallel second side panels 12. The first side panel 11 is perpendicular to the second side panel 12. The two second side panels 12 are respectively located at two ends of the first side panel 11. Figure 1 and Figure 2As shown, the rubber strips include a first rubber strip 13, a second rubber strip 14 and a third rubber strip 15. The first rubber strip 13 is arranged in a one-to-one correspondence with the first side panel 11, the second rubber strip 14 is arranged in a one-to-one correspondence with the second side panel 12, the inner side surface of the first rubber strip 13 is in contact with the outer side surface of the first side panel 11, and the inner side surface of the second rubber strip 14 is in contact with the outer side surface of the second side panel 12. The area of ​​the first rubber strip 13 is greater than the area of ​​the first side panel 11, and the area of ​​the second rubber strip 14 is greater than the area of ​​the second side panel 12; the volume of the space enclosed by the third rubber strip 15, the two first rubber strips 13 and the two second rubber strips 14 is greater than the volume of the fixed frame.

[0025] The blocking mechanism 1 also includes a first state and a second state. When it is in the first state, the entire blocking mechanism 1 is placed in the through hole 4. At this time, the outer side surfaces of the first rubber strip 13, the second rubber strip 14 and the third rubber strip 15 just fit the inner wall of the energy dissipation pool enclosed to form the through hole 4. Then, the blocking mechanism 1 in the first state is extended to the second state by the power mechanism 2, so that the outer side surfaces of the first rubber strip 13, the second rubber strip 14 and the third rubber strip 15 fit the inner wall of the energy dissipation pool enclosed to form the through hole 4, so as to effectively block the through hole 4. As can be seen from the above, the volume of the blocking mechanism 1 in the first state is smaller than the volume of the blocking mechanism 1 in the second state.

[0026] Furthermore, the power mechanism 2 in this embodiment includes a piston rod 21, a fixing plate 25 fixedly arranged at one end of the piston rod 21 close to the fixing frame, four hydraulic jacks 22 fixedly arranged on the outer wall of the piston rod 21, a pressure relief valve 23 arranged at one end of the piston rod 21 away from the blocking mechanism 1, and a lifting ring 24 arranged on the piston rod 21. Figure 2 and Figure 3 As shown, the fixing plate 25 is located outside the fixing frame and close to the side of the fixing frame away from the fixing mechanism 3. The third rubber strip 15 is arranged corresponding to the fixing plate 25. The inner side surface of the third rubber strip 15 is in contact with the outer side surface of the fixing plate 25, and the area of ​​the third rubber strip 15 is larger than the area of ​​the fixing plate 25. The arrangement between the rubber strip and the fixing frame and the fixing plate 25 can effectively ensure the sealing of the entire rubber strip formed by the first rubber strip 13, the second rubber strip 14 and the third rubber strip 15, thereby ensuring effective sealing of the through hole 4.

[0027] Specifically, the four hydraulic jacks 22 are provided corresponding to the two first side plates 11 and the two second side plates 12, and the interior of the fixed frame is used to accommodate the four hydraulic jacks 22. The ends of the two hydraulic jacks 22 provided corresponding to the two first side plates 11 that are close to each other are fixedly connected to the outer wall of the piston rod 21, and the ends of the two hydraulic jacks 22 that are far away from each other are respectively abutted against the inner wall of the corresponding first side plate 11; the ends of the two hydraulic jacks 22 provided corresponding to the two second side plates 12 that are close to each other are fixedly connected to the outer wall of the piston rod 21, and the ends of the two hydraulic jacks 22 that are far away from each other are respectively abutted against the inner wall of the corresponding second side plate 12; and the two hydraulic jacks 22 provided corresponding to the two first side plates 11 are located in the same vertical direction, and the two hydraulic jacks 22 provided corresponding to the two second side plates 12 are located in the same horizontal direction.

[0028] The fixing plate 25 is also provided with a first bolt assembly. The bolts in the first bolt assembly penetrate the fixing plate 25 and the thickness direction of the third rubber strip 15. By tightening the nut, the third rubber strip 15 can be fixedly connected to the fixing plate 25, thereby fixing the entire rubber strip to the fixing plate 25 to prevent the rubber strip from falling. The nut in the first bolt assembly can press against the hole generated when the bolt penetrates the fixing plate 25 and the third rubber strip 15 to prevent water leakage in the through hole 4. In addition, the lifting ring 24 on the piston rod 21 is used to fix the safety rope, and the other end of the safety rope can be fixed to a safe position after the plugging device is installed in the through hole 4 to prevent the entire plugging device from falling.

[0029] Further, the power mechanism 2 also includes an oil pump (not shown), a distributor (not shown) and four oil pipes (not shown), and the oil pipes are arranged in a one-to-one correspondence with the hydraulic jacks 22. The distributor in this embodiment is a one-to-four oil circuit, which ensures that each hydraulic jack 22 can be connected to the distributor, and one end of each oil pipe is connected to the corresponding hydraulic jack 22, and the other end is connected to one of the interfaces of the distributor. The oil pump in this embodiment is a high-pressure manual oil pump, and the oil pump is connected to the one-to-four oil circuit distributor, and the one-to-four oil circuit distributor is connected to the four hydraulic jacks 22 through four high-pressure oil pipes, and the hydraulic jacks 22 are pressurized to stretch, so that the first side plate 11 and the second side plate 12 abutting against one end of the hydraulic jack 22 stretch, driving the fitted rubber strip to gradually squeeze the inner wall of the energy dissipation pool enclosing the through hole 4, so as to achieve the purpose of blocking the water flow.

[0030] Further, the fixing mechanism 3 is used to support the side wall of the energy dissipation pool enclosing the through hole 4, and the fixing mechanism 3 includes a positioning frame 31, the shape of the positioning frame 31 is the same as the shape of the through hole 4 and the size of the positioning frame 31 is smaller than the size of the through hole 4, so as to ensure that the positioning frame 31 can be extended into the through hole 4. Specifically, the width of the positioning frame 31 is smaller than the width of the through hole 4, and the height of the positioning frame 31 is smaller than the height of the through hole 4. The positioning frame 31 has four side walls, upper, lower, left and right, and each side wall is provided with a second bolt assembly 32.

[0031] The positioning frame 31 is sleeved on the outer periphery of the piston rod 21 and close to the side of the fixing frame away from the through hole 4. It can move back and forth along the length extension direction of the piston rod 21, which is convenient for installing and removing the positioning frame 31 on the piston rod 21. The bolts of the second bolt assembly 32 penetrate the thickness direction of the side wall of the positioning frame 31 and are located outside the positioning frame 31 with one end away from the piston rod 21 to be used to abut against the inner wall of the energy dissipation pool enclosed to form the through hole 4, which can play a fixed supporting role on the side wall of the dissipation pool; and the distance from the end of the bolt of the second bolt assembly 32 away from the piston rod 21 to the outer surface of the inner wall of the corresponding positioning frame 31 is 80 to 200 mm. Such a setting can use the second bolt assembly 32 to support the side wall of the energy dissipation pool, avoid the deformation of the side wall of the energy dissipation pool around the through hole 4 due to the influence of water pressure, which is not conducive to the blocking of the through hole 4.

[0032] The working process of the blocking device of this embodiment is as follows:

[0033] First measure the size of the through hole 4 to select a suitable rubber strip. Install the rubber strip and tighten the nut of the first bolt assembly. At this time, the blocking mechanism 1 is in the first state, and a safety rope is fixedly connected to the lifting ring 24 of the piston rod 21. Open the pressure relief valve 23, install the blocking mechanism 1 and the fixing mechanism 3 into the through hole 4, adjust the bolt length of the second bolt assembly 32 on the fixing frame so that one end of it abuts against the inner wall of the dissipation tank, and then close the pressure relief valve 23. Adjust the flow switch of the distributor that divides the oil into four circuits so that the four oil pipes are connected at the same time and the flow of each oil pipe is equal. Use the oil pump to manually apply pressure, and at the same time observe the plugging condition of the plugging mechanism 1 on the through hole 4 to adjust the oil pump pressure at any time, and control the extension length of the four hydraulic jacks 22 to control the extension degree of the first side plate 11 and the second side plate 12 abutting against the hydraulic jacks 22, so that the first rubber strip 13 and the second rubber strip 14 can be in close contact with the inner wall of the dissipation tank, thereby achieving the purpose of plugging the through hole 4. At this time, the plugging mechanism 1 is in the second state. After the plugging device is installed, fix the other end of the safety rope to a safe position to prevent the device from falling. After the plugging is completed, before disassembling the plugging device, open the pressure relief valve 23 first, so that the plugging device can be disassembled after the pressure relief is completed.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A plugging device for a through hole of an energy dissipation pool, characterized in that: It includes a blocking mechanism, a power mechanism and a fixing mechanism, both of which are connected to the power mechanism. The shape of the blocking mechanism matches the shape of the through hole. The blocking mechanism includes a first state and a second state. The volume of the blocking mechanism in the first state is smaller than the volume of the blocking mechanism in the second state. The power mechanism is used to extend the blocking mechanism in the first state to the second state; the fixing mechanism is used to support the inner wall of the energy dissipation pool that encloses the through hole.

2. The blocking device according to claim 1, characterized in that: The blocking mechanism includes a fixing frame and a rubber strip, the fixing frame includes two parallel first side plates and two parallel second side plates, the first side plates are perpendicular to the second side plates, and the two second side plates are respectively located at two ends of the first side plates.

3. The blocking device according to claim 2, characterized in that: The power mechanism includes a piston rod, a fixing plate fixedly arranged at one end of the piston rod close to the fixing frame, a plurality of hydraulic jacks fixedly arranged on the outer wall of the piston rod, and a pressure relief valve arranged at one end of the piston rod away from the blocking mechanism. The interior of the fixing frame is used to accommodate the plurality of hydraulic jacks, and the fixing plate is located outside the fixing frame and close to a side of the fixing frame away from the fixing mechanism.

4. The blocking device according to claim 3, characterized in that: A total of four hydraulic jacks are provided corresponding to the two first side plates and the two second side plates.

5. The blocking device according to claim 4, characterized in that: The ends of the two hydraulic jacks disposed corresponding to the two first side plates and close to each other are fixedly connected to the outer wall of the piston rod, and the ends of the two hydraulic jacks disposed corresponding to the two first side plates and away from each other are respectively abutted against the inner wall of the corresponding first side plates, and the two hydraulic jacks disposed corresponding to the two first side plates are located in the same vertical direction; The ends of the two hydraulic jacks corresponding to the two second side plates that are close to each other are fixedly connected to the outer wall of the piston rod, and the ends of the two hydraulic jacks that are far away from each other are respectively abutted against the inner wall of the corresponding second side plates, and the two hydraulic jacks corresponding to the two second side plates are located in the same horizontal direction.

6. The blocking device according to claim 5, characterized in that: The rubber strips include a first rubber strip, a second rubber strip and a third rubber strip, the first rubber strip is arranged in a one-to-one correspondence with the first side panel, the second rubber strip is arranged in a one-to-one correspondence with the second side panel, the third rubber strip is arranged in a corresponding manner with the fixed panel, the inner side surface of the first rubber strip is in contact with the outer side surface of the first side panel, the inner side surface of the second rubber strip is in contact with the outer side surface of the second side panel, and the inner side surface of the third rubber strip is in contact with the outer side surface of the fixed panel, and when the blocking mechanism is in the first state and / or the second state, the outer side surfaces of the first rubber strip, the second rubber strip and the third rubber strip are in contact with the inner wall of the energy dissipation pool enclosing the through hole; The area of ​​the first rubber strip is larger than the area of ​​the first side panel, the area of ​​the second rubber strip is larger than the area of ​​the second side panel, and the area of ​​the third rubber strip is larger than the area of ​​the fixing panel; The volume of a space enclosed by the third rubber strip, the two first rubber strips, and the two second rubber strips is greater than the volume of the fixing frame.

7. The blocking device according to claim 6, characterized in that: The power mechanism further includes a first bolt assembly, which penetrates through the fixing plate and the third rubber strip in a thickness direction, and is used to fix the rubber strip to the fixing plate.

8. The blocking device according to claim 3, characterized in that: The fixing mechanism includes a positioning frame and a plurality of second bolt assemblies arranged on the side wall of the positioning frame. The shape of the positioning frame is the same as the shape of the through hole. The width of the positioning frame is smaller than the width of the through hole. The height of the positioning frame is smaller than the height of the through hole.

9. The blocking device according to claim 8, characterized in that: The positioning frame is sleeved on the outer circumference of the piston rod, and the positioning frame is close to the side of the fixing frame away from the through hole. The end of the second bolt assembly away from the piston rod is located outside the positioning frame for abutting against the inner wall of the energy dissipation pool enclosing the through hole; the distance from the end of the second bolt assembly away from the piston rod to the corresponding inner wall of the positioning frame is 80 to 200 mm.

10. The blocking device according to claim 3, characterized in that: The power mechanism also includes an oil pump, a distributor and multiple oil pipes. The oil pipes are arranged in a one-to-one correspondence with the hydraulic jacks. One end of each of the oil pipes is connected to the corresponding hydraulic jack, and the other end of each of the oil pipes is connected to an interface of the distributor.

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