Dust collection device for nuclear radiation environment

Abstract

The utility model discloses a dust collection device for a nuclear radiation environment, which relates to the technical field of nuclear power, and comprises a submersible sewage pump, a connecting pipe group and an L-shaped dust collection pipe, a sedimentation mechanism is arranged on the inner side of the lower half section of the connecting pipe group, the dust collection pipe is fixedly communicated with the middle part of the connecting pipe group, and the sedimentation mechanism comprises a filter disc, an isolation plate, a fixing ring and a first driving motor. In the filtering process, a first driving motor is used for driving an isolation plate to drive a filter disc to rotate, and when the isolation plate rotates till one side is completely separated from the position where a dust suction pipe is communicated with a connecting pipe set, the side, away from the position where the dust suction pipe is communicated with the connecting pipe set, of the isolation plate is in a relatively closed state; metal particles and other impurities located on the lower surface of the filter disc on the side can fall to the bottom of the connecting pipe set under the action of self gravity, the isolation plate drives the filter disc to continue to rotate, the filter disc on the side can stably filter sucked pool water, frequent manual replacement or cleaning of the filter disc is not needed, and use is more convenient and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power technology field especially relates to a dust extraction device for nuclear radiation environment. BACKGROUND

[0002] The function of the spent fuel pool of the pressurized water reactor nuclear power plant is to store spent fuel for a long time, and to provide an operation place for the loading and unloading, transportation and other processes of nuclear fuel. The key technologies of the intelligent underwater maintenance equipment of the nuclear power plant include the maintenance technology of the spent fuel pool. After the laser welding of the steel covering of the spent fuel pool is adopted in the underwater maintenance, the weld is needed to be ground underwater. Since metal powder will be generated during grinding, the water quality will be seriously affected, the real-time observation and monitoring capability of the underwater maintenance work will be reduced, and the smooth progress of the underwater maintenance work will be affected. Since the pool water in the spent fuel pool is radioactive, the operator needs to be prevented from directly contacting the pool water as much as possible. Therefore, a dust extraction device in a nuclear radiation environment needs to be designed and developed to filter and purify the water quality in the range of the powder debris pollution.

[0003] After searching, the patent with the patent publication number CN220879869U provides a dust extraction device for nuclear radiation environment. The dust extraction device includes a floating device, a dust extraction device and a sensing control device. The floating device includes a float and a tool rod. The float can float on the water surface to provide the buoyancy of the dust extraction device suspended in the water. The dust extraction device includes a filter cylinder. The pipeline of the dust extraction head extends into the filter cylinder from the side wall of the filter cylinder, and is connected to the folding filter core inside the filter cylinder. The water body sucked into the folding filter core is filtered from the inside to the outside of the folding filter core to the gap between the folding filter core and the side wall of the filter cylinder. The gap is connected to the submersible sewage pump above to provide the power for sucking the water body. The control box is connected to the dust extraction device through the cable. The control box can control the start, stop and power adjustment of the submersible sewage pump. The device has accurate dust extraction range, high dust extraction efficiency, and can meet the filtering and dust extraction requirements of narrow area and single operator operation.

[0004] Based on the above search, it is found that the dust extraction device for nuclear radiation environment similar to the above disclosure in the prior art needs to be frequently replaced or cleaned manually, which is troublesome. Therefore, a dust extraction device for nuclear radiation environment is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] The purpose of the present application is to provide a dust extraction device for nuclear radiation environment to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical solution: a dust extraction device for nuclear radiation environment, including a submersible sewage pump, a connection pipe group and a drainage net pipe respectively installed at the water inlet and outlet of the submersible sewage pump, and a dust extraction pipe installed on the connection pipe group:

[0007] The dust suction pipe is L-shaped, a settling mechanism is arranged on the inner side of the lower half of the connecting pipe group, and the dust suction pipe is fixedly connected to the middle part of the connecting pipe group;

[0008] The settling mechanism comprises a filter disc, a partition plate, a fixing ring and a first driving motor.

[0009] As a further supplement to the scheme, the filter disc is detachably installed on the inner side of the fixing ring, the bottom of the connecting pipe group is detachably installed with a sealing cover, the first driving motor is installed on the sealing cover, the bottom of the sealing cover is fixed with an anti-touch column, and the bottom surface of the anti-touch column is lower than the bottom surface of the first driving motor and the dust suction pipe.

[0010] As a further supplement to the scheme, the upper end surface of the filter disc is fixed with a plurality of first protrusions, the inner wall of the connecting pipe group is horizontally fixed with a horizontal plate, the lower end surface of the horizontal plate is fixed with a plurality of second protrusions, and the first protrusions intermittently contact the second protrusions during the rotation of the filter disc driven by the first driving motor.

[0011] As a further supplement to the scheme, the side end of the dust suction pipe is installed with a camera and a fill light.

[0012] As a further supplement to the scheme, the connecting pipe group comprises a fixed pipe and a movable pipe, the fixed pipe is fixed with the water inlet of the sewage pump, the movable pipe is connected with the fixed pipe through a rotary sealing connecting piece, the settling mechanism is installed on the inner side of the movable pipe, and the dust suction pipe is installed on the side end of the movable pipe.

[0013] The side end of the fixed pipe is installed with a second driving motor, the output end of the second driving motor is coaxially fixed with a transmission gear, and the top outer side of the movable pipe is fixed with a transmission outer gear ring, and the transmission outer gear ring is engaged with the transmission gear.

[0014] As a further supplement to the scheme, the top end of the drainage mesh pipe is fixed with a mounting plate, the upper side of the mounting plate is provided with a floating platform, and the floating platform and the mounting plate are installed with an extension device.

[0015] In summary, the technical effects and advantages of the utility model are as follows:

[0016] 1. In the utility model, through the cooperation of the first driving motor, the isolation plate and the filter disc, when the sewage pump is used to pump water, the metal particles and other impurities in the water are sucked into the dust suction pipe along with the water flow, the metal particles and other impurities are intercepted on the lower side of the filter disc, filtration is realized, and the filtered water is discharged by the drainage net pipe; in the above process, the first driving motor drives the isolation plate to rotate with the filter disc, when the isolation plate rotates to a position completely separated from the position where the dust suction pipe and the connecting pipe group are connected in communication, the side of the isolation plate away from the position where the dust suction pipe and the connecting pipe group are connected in communication is in a relatively closed state, and the metal particles and other impurities on the lower surface of the filter disc on the side fall to the bottom of the connecting pipe group under the action of their own gravity, the isolation plate continues to rotate with the filter disc, and the filter disc on the side can stably filter the inhaled pool water, manual replacement or cleaning of the filter disc is not required frequently, and the utility model is more convenient and reliable to use.

[0017] 2. In the utility model, a plurality of first protrusions are fixed on the upper end face of the filter disc, a horizontal plate is fixed horizontally on the inner wall of the connecting pipe group, a plurality of second protrusions are fixed on the lower end face of the horizontal plate, and the first protrusions and the second protrusions are intermittently contacted in the process that the first driving motor drives the filter disc to rotate with the first protrusions, so that the filter disc is vibrated and the metal particles and other impurities adhered to the bottom surface of the filter disc are shaken off. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is an overall plan structure schematic view in the embodiment;

[0020] Figure 2 It is a sectional structure schematic view of the connecting pipe group in the embodiment;

[0021] Figure 3 It is a structure schematic view of the sedimentation mechanism in the embodiment;

[0022] Figure 4 It is a top view structure schematic view of the sedimentation mechanism in the use state.

[0023] In the figure: 1, the submersible sewage pump; 2, the drainage network pipe; 3, the fixed pipe; 4, the movable pipe; 5, the dust suction pipe; 6, the filter disc; 7, the isolation plate; 8, the fixed ring; 9, the first protrusion; 10, the cross plate; 11, the second protrusion; 12, the sealing cover; 13, the first drive motor; 14, the anti-touch column; 15, the camera; 16, the light supplement lamp; 17, the second drive motor; 18, the transmission gear; 19, the transmission outer gear ring; 20, the floating platform; 21, the mounting plate; 22, the telescopic device. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment: Reference Figures 1-4 As shown in the figure, the dust collection device for nuclear radiation environment comprises a submersible sewage pump 1, a connecting pipe group and a drainage network pipe 2 respectively installed at the water inlet and outlet of the submersible sewage pump 1, and a dust suction pipe 5 installed on the connecting pipe group.

[0026] The dust suction pipe 5 is L-shaped, the lower half of the connecting pipe group is provided with a sedimentation mechanism, and the dust suction pipe 5 is fixedly connected to the middle part of the connecting pipe group. Regarding the sedimentation mechanism, specifically, the sedimentation mechanism comprises a filter disc 6, an isolation plate 7, a fixed ring 8 and a first drive motor 13. The bottom of the connecting pipe group is sealingly provided, the first drive motor 13 is installed at the bottom of the connecting pipe group, the output end of the first drive motor 13 penetrates through the connecting pipe group and is fixed with the isolation plate 7, the top end of the isolation plate 7 is fixed with the fixed ring 8, and the side end of the isolation plate 7 and the circumferential side of the fixed ring 8 are both slidingly attached to the inner wall of the connecting pipe group, and the filter disc 6 is installed at the inner side of the fixed ring 8.

[0027] Based on the cooperation of the above structure, the submersible sewage pump 1 is used to pump water, and the metal particles and other impurities in the water are sucked into the dust suction pipe 5 along with the water flow, the metal particles and other impurities are intercepted on the lower side of the filter disc 6, the filtration is realized, and the filtered water is discharged by the drainage network pipe 2. In the above process, the first drive motor 13 drives the isolation plate 7 to rotate with the filter disc 6, such as Figure 4When the isolation plate 7 is rotated to a position where one side is completely communicated with the dust suction pipe 5 and the connecting pipe group, the side of the isolation plate 7 away from the position where the dust suction pipe 5 and the connecting pipe group are communicated is in a relatively closed state, and the metal particles and other impurities on the lower surface of the filter disc 6 will fall to the bottom of the connecting pipe group under the action of gravity, and the filter disc 6 can stably filter the pool water sucked in without frequent manual replacement or cleaning of the filter disc 6, which is more convenient and reliable to use.

[0028] In order to facilitate replacement of the filter disc 6, the filter disc 6 is detachably installed on the inner side of the fixed ring 8, for example, is clamped or is pressed on the inner side of the fixed ring 8, a sealing cover 12 is detachably installed at the bottom of the connecting pipe group, the first driving motor 13 is installed on the sealing cover 12, and a touch-proof column 14 is fixed at the bottom of the sealing cover 12. The bottom surface of the touch-proof column 14 is lower than the bottom surface of the first driving motor 13 and the dust suction pipe 5, so as to avoid the first driving motor 13 and the dust suction pipe 5 from touching the pool bottom.

[0029] The upper end surface of the filter disc 6 is fixed with a plurality of first protrusions 9, the inner wall of the connecting pipe group is horizontally fixed with a horizontal plate 10, and the lower end surface of the horizontal plate 10 is fixed with a plurality of second protrusions 11. In the process of driving the filter disc 6 to rotate by the first driving motor 13, the first protrusions 9 and the second protrusions 11 are intermittently in contact, so as to make the filter disc 6 vibrate and shake off the metal particles and other impurities attached to the bottom surface of the filter disc 6.

[0030] In order to facilitate the staff to check the dust suction condition in the pool, a camera 15 and a fill light 16 are installed at the side end of the dust suction pipe 5. The camera 15 can be used to cooperate with the fill light 16 to take real-time pictures of the environment in the pool, and the pictures can be uploaded to a display terminal in real time through existing related configuration equipment for the staff to check.

[0031] Corresponding to the above functions, the connecting pipe group includes a fixed pipe 3 and a movable pipe 4. The fixed pipe 3 is fixed with the water inlet of the submersible sewage pump 1, and the movable pipe 4 is connected with the fixed pipe 3 through a rotary sealing connector. The rotary sealing connector adopts a conventional pipe connector in the prior art, which can not only ensure the sealing between the pipes, but also meet the relative rotation between the pipes. The settling mechanism is installed on the inner side of the movable pipe 4, the dust suction pipe 5 is installed at the side end of the movable pipe 4, the second driving motor 17 is installed at the side end of the fixed pipe 3, the output end of the second driving motor 17 is coaxially fixed with a transmission gear 18, the top outer side of the movable pipe 4 is fixed with a transmission outer gear ring 19, and the transmission outer gear ring 19 is engaged with the transmission gear 18.

[0032] The staff can control the second drive motor 17 to drive the transmission gear 18 to rotate through the controller, the rotating transmission gear 18 drives the transmission outer gear ring 19 to rotate with the movable pipe 4 and the dust suction pipe 5, and comprehensive observation of the underwater dust suction condition can be realized.

[0033] In addition, the top end of the drainage mesh pipe 2 is fixed with a mounting plate 21, the upper side of the mounting plate 21 is provided with a floating platform 20, and a telescopic device 22, such as an electric push rod, is installed between the floating platform 20 and the mounting plate 21; the staff can control the telescopic device 22 to extend and retract through the controller to adjust the depth at which the dust suction pipe 5 is located, so that the dust suction operation is more convenient and reliable.

[0034] The above electrical equipment is electrically connected with an external controller, so that the staff can remotely control, avoid direct contact with the pool water containing radioactivity and be adversely affected by nuclear radiation, and be safer and more reliable.

[0035] The working principle of the utility model is: metal particles and other impurities in water are sucked in through the dust suction pipe 5 along with water flow by using the sewage submersible pump 1, the metal particles and other impurities are intercepted at the lower side of the filter disc 6, filtration is realized, and the filtered water is discharged by the drainage mesh pipe 2; in the above process, the first drive motor 13 drives the isolation plate 7 to rotate with the filter disc 6, such as Figure 4 When the isolation plate 7 is rotated to a position completely separated from the position at which the dust suction pipe 5 and the connecting pipe group are communicated, the side of the isolation plate 7 away from the position at which the dust suction pipe 5 and the connecting pipe group are communicated is in a relatively closed state, and in the process that the filter disc 6 rotates with the first protrusion 9, the first protrusion 9 and the second protrusion 11 are intermittently in contact, so that the filter disc 6 is vibrated, and the metal particles and other impurities attached to the bottom surface of the filter disc 6 are shaken off, the metal particles and other impurities located on the lower surface of the filter disc 6 fall to the bottom of the connecting pipe group under the action of their own gravity, and the filter disc 6 on the side can stably filter the sucked pool water while the isolation plate 7 continues to rotate with the filter disc 6.

[0036] Finally, it should be noted that: the above only describes preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A dust suction device for nuclear radiation environment, comprising a submersible sewage pump (1), a connecting pipe group and a drainage mesh pipe (2) respectively installed at the water inlet and outlet of the submersible sewage pump (1), and a dust suction pipe (5) installed on the connecting pipe group, characterized in that: the dust suction pipe (5) is L-shaped, a sedimentation mechanism is arranged on the inner side of the lower half of the connecting pipe group, and the dust suction pipe (5) is fixedly connected to the middle of the connecting pipe group; the sedimentation mechanism comprises a filter disc (6), a partition plate (7), a fixed ring (8) and a first driving motor (13), the bottom of the connecting pipe group is sealingly arranged, the first driving motor (13) is installed at the bottom of the connecting pipe group, the output end of the first driving motor (13) penetrates through the connecting pipe group and is fixed with the partition plate (7), the top end of the partition plate (7) is fixed with the fixed ring (8), and the side end of the partition plate (7) and the circumferential side of the fixed ring (8) are slidingly fitted with the inner wall of the connecting pipe group, and the filter disc (6) is installed on the inner side of the fixed ring (8).

2. A dust extraction device for a nuclear radiation environment according to claim 1, characterised in that: the filter disc (6) is detachably installed on the inner side of the fixed ring (8), the bottom of the connecting pipe group is detachably provided with a sealing cover (12), the first driving motor (13) is installed on the sealing cover (12), the bottom of the sealing cover (12) is fixed with a touch-proof column (14), and the bottom surface of the touch-proof column (14) is lower than the bottom surface of the first driving motor (13) and the dust suction pipe (5).

3. A dust extraction device for a nuclear radiation environment according to claim 2, characterised in that: a plurality of first protrusions (9) are fixed on the upper end surface of the filter disc (6), a horizontal plate (10) is fixed on the inner wall of the connecting pipe group, a plurality of second protrusions (11) are fixed on the lower end surface of the horizontal plate (10), and the first driving motor (13) drives the filter disc (6) to rotate with the first protrusions (9), and the first protrusions (9) and the second protrusions (11) are intermittently contacted.

4. A dust extraction device for use in a nuclear radiation environment according to claim 1, characterised in that: a camera (15) and a fill light (16) are installed on the side end of the dust suction pipe (5).

5. A dust extraction device for use in a nuclear radiation environment according to claim 4, characterised in that: the connecting pipe group comprises a fixed pipe (3) and a movable pipe (4), the fixed pipe (3) is fixed with the water inlet of the submersible sewage pump (1), the movable pipe (4) is connected with the fixed pipe (3) through a rotary sealing connector, the sedimentation mechanism is installed on the inner side of the movable pipe (4), and the dust suction pipe (5) is installed on the side end of the movable pipe (4); a second driving motor (17) is installed on the side end of the fixed pipe (3), a transmission gear (18) is coaxially fixed on the output end of the second driving motor (17), a transmission outer gear ring (19) is fixed on the top outer side of the movable pipe (4), and the transmission outer gear ring (19) is engaged with the transmission gear (18).

6. A dust extraction device for a nuclear radiation environment according to claim 1, characterised in that: an installation plate (21) is fixed on the top end of the drainage mesh pipe (2), a floating platform (20) is arranged on the upper side of the installation plate (21), and a telescopic device (22) is installed between the floating platform (20) and the installation plate (21).

Images