Nuclear power station fuel transmission pool and equipment decontamination device

Abstract

The utility model relates to a nuclear power station fuel transmission pool and equipment decontamination device which comprises a movable track support and a device body, the movable track support is used for being erected on guardrails on the two sides of the fuel transmission pool, and the movable track support can reciprocate along the guardrails; the device body comprises an adjusting rod, a lifting driving assembly, an angle adjusting mechanism and a spraying mechanism, the lifting driving assembly and the angle adjusting mechanism are arranged on the movable track support, the adjusting rod is in transmission connection with the lifting driving assembly and the angle adjusting mechanism, and the spraying mechanism is arranged at the bottom end of the adjusting rod. According to the device, the pool bottom, the pool wall and equipment of the fuel conveying pool can be precisely cleaned according to needs, people do not need to go up and down the pool for hot spot cleaning, the time for people to go up and down the pool is saved, the radioactive substance washing and hot spot removing effects can be effectively improved, the decontamination consumption time is shortened, the decontamination efficiency is improved, and the exposure dose of people is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to radioactive decontamination equipment technical field, especially in nuclear power station fuel transmission pool and equipment decontamination device. BACKGROUND

[0002] During the refueling overhaul of nuclear power station, the fuel transmission pool is used to transmit nuclear fuel between the reactor pool, component pool and spent fuel pool, wherein the equipment includes fuel trolley, track, hoist lifting device and the like.

[0003] After the refueling overhaul, due to the increase of radioactivity of the pool and the equipment in the pool, some areas may gather radioactive hot spots, so it is necessary to decontaminate the fuel transmission pool and the equipment in the pool to reduce the overall radioactivity level and facilitate subsequent equipment operation and maintenance.

[0004] Currently, high-pressure water guns are used for decontamination of the fuel transmission pool. Since the fuel transmission pool is deep with a drop of about 10m, the high-pressure water gun has poor effect on washing radioactive substances and removing hot spots, and personnel need to enter the pool for decontamination when necessary, which increases the radiation dose of personnel. The current method consumes a long time for decontamination, has low decontamination efficiency and high radiation dose of personnel. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a nuclear power station fuel transmission pool and equipment decontamination device to improve the effect of washing radioactive substances and removing hot spots, shorten the decontamination time, improve the decontamination efficiency and reduce the radiation dose of personnel.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A nuclear power station fuel transmission pool and equipment decontamination device, comprising:

[0008] A movable track support is used to be erected on the guardrails on both sides of the fuel transmission pool, and the movable track support can reciprocate along the guardrails;

[0009] A device main body comprises an adjusting rod, a lifting driving assembly, an angle adjusting mechanism and a spraying mechanism. The lifting driving assembly and the angle adjusting mechanism are arranged on the movable track support. The adjusting rod is in transmission connection with the lifting driving assembly and the angle adjusting mechanism respectively. The lifting driving assembly is used to drive the adjusting rod to lift. The angle adjusting mechanism is used to drive the adjusting rod to rotate around its own axis. The spraying mechanism is arranged at the bottom end of the adjusting rod and is used to be connected with a water source.

[0010] In an embodiment of the present application, the movable track support comprises a support body and traveling wheels, at least two traveling wheels are arranged at each end of the support body, a clamping groove for clamping the guardrail is arranged on the circumferential surface of the traveling wheel, and the lifting driving assembly and the angle adjusting mechanism are arranged on the support body.

[0011] In an embodiment of the present application, the lifting driving assembly comprises:

[0012] a sleeve, the sleeve is sleeved on the adjusting rod, and the sleeve is threadedly connected with the adjusting rod;

[0013] a first rotary driving device, the first rotary driving device is in transmission connection with the sleeve to drive the sleeve to rotate.

[0014] In an embodiment of the present application, the first rotary driving device comprises:

[0015] a bevel gear set, the bevel gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is coaxially arranged on the sleeve, and the second bevel gear is in meshing connection with the first bevel gear;

[0016] a first operating rod, one end of the first operating rod is coaxially connected with the second bevel gear, the first operating rod extends in a horizontal direction, and the other end of the first operating rod is provided with a rocker arm.

[0017] In an embodiment of the present application, the angle adjusting mechanism comprises:

[0018] a sector-shaped adjusting plate, a small end of the sector-shaped adjusting plate is arranged on the adjusting rod in a reciprocating sliding manner along the axial direction of the adjusting rod, and a large end of the sector-shaped adjusting plate is provided with an arc-shaped rack;

[0019] a cylindrical gear, the cylindrical gear is in meshing connection with the arc-shaped rack;

[0020] a second operating rod, one end of the second operating rod is coaxially connected with the cylindrical gear, the second operating rod extends in a horizontal direction, the extending direction of the second operating rod is parallel to the extending direction of the first operating rod, and the other end of the second operating rod is provided with an operating wheel.

[0021] In an embodiment of the present application, the angle adjusting mechanism further comprises a limiting assembly, the limiting assembly comprises a first limiting stopper and a second limiting stopper, the first limiting stopper and the second limiting stopper are arranged on the front and back sides of the rotating direction of the sector-shaped adjusting plate respectively, and the first limiting stopper and the second limiting stopper are in contact connection with the sector-shaped adjusting plate when the sector-shaped adjusting plate rotates to a preset position, so as to limit the rotating angle of the sector-shaped adjusting plate.

[0022] In an embodiment of the present application, the device body further comprises a gear box, the sleeve, the bevel gear set, the sector adjusting plate, the cylindrical gear and the limiting assembly are arranged in the gear box, and the gear box is arranged on the movable track support, one end of the first operating rod and the second operating rod extends into the gear box, and the other end extends out of the gear box.

[0023] In an embodiment of the present application, the bevel gear set comprises at least two second bevel gears, each of the second bevel gears is arranged in a circumferential direction, and is rotatably arranged on an inner wall of the gear box, and one of the second bevel gears is connected to the first operating rod.

[0024] In an embodiment of the present application, the device body further comprises a third operating rod, the third operating rod is sleeved on the first operating rod, one end of the third operating rod is connected to the gear box, and the other end of the third operating rod is provided with a handle.

[0025] In an embodiment of the present application, the adjusting rod is hollow, and the spraying mechanism comprises:

[0026] A flow dividing cylinder is arranged at the lower end of the adjusting rod, an inner cavity of the flow dividing cylinder is communicated with the inner cavity of the adjusting rod to form a flow channel, and a control valve for controlling flow is arranged at the top end of the adjusting rod.

[0027] A plurality of nozzles are arranged on the flow dividing cylinder, and the nozzles in the same row are arranged in a length direction of the flow dividing cylinder.

[0028] As can be seen from the above technical solutions, the utility model discloses a nuclear power plant fuel transmission pool and equipment decontamination device, including movable track support and device body, wherein, movable track support is used to erect on the guardrail of both sides of fuel transmission pool, and movable track support can reciprocate along guardrail, device body includes adjusting rod, lifting drive assembly, angle adjusting mechanism and spraying mechanism, the operation of lifting drive assembly, angle adjusting mechanism and spraying mechanism can rely on electricity and / or manually, lifting drive assembly and angle adjusting mechanism are arranged in movable track support, adjusting rod is respectively transmission connection with lifting drive assembly and angle adjusting mechanism, lifting drive assembly is used to drive adjusting rod to lift, angle adjusting mechanism is used to drive the rotation of adjusting rod around its axis, and spraying mechanism is arranged at the bottom end of adjusting rod, and spraying mechanism is used to be connected with water source.

[0029] In application, first, the movable track support is erected on the guardrails on both sides of the fuel transfer pool, the position adjustment of the nozzle of the spraying device in the horizontal direction can be realized by moving the movable track support, the position adjustment of the nozzle of the spraying device in the vertical direction can be realized by the lifting driving assembly, the adjustment of the orientation of the nozzle of the spraying mechanism can be realized by the angle adjusting mechanism, so that the pool bottom, pool wall and equipment of the fuel transfer pool can be accurately cleaned according to the needs, the personnel need not to go up and down the pool for hot spot cleaning, the time of personnel going up and down the pool is saved, the flushing and hot spot removing effect of radioactive substances can be effectively improved, the decontamination time is shortened, the decontamination efficiency is improved, and the personnel radiation dose is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or 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.

[0031] Figure 1 The structural schematic diagram of the nuclear power plant fuel transfer pool and the equipment decontamination device provided by the embodiment of the present application is shown in the figure.

[0032] Figure 2 The front view of the nuclear power plant fuel transfer pool and the equipment decontamination device provided by the embodiment of the present application is shown in the figure.

[0033] Figure 3 The side view of the nuclear power plant fuel transfer pool and the equipment decontamination device provided by the embodiment of the present application is shown in the figure.

[0034] Figure 4 The top view of the nuclear power plant fuel transfer pool and the equipment decontamination device provided by the embodiment of the present application is shown in the figure.

[0035] Figure 5 The internal perspective view of the gear box of the nuclear power plant fuel transfer pool and the equipment decontamination device provided by the embodiment of the present application is shown in the figure.

[0036] In the figure:

[0037] 100 is a movable track support; 110 is a frame body; 111 is a support beam; 112 is a connecting beam; 120 is a walking wheel; 120a is a clamping groove;

[0038] 200 is an adjusting rod.

[0039] 300 is a lifting driving assembly; 310 is a sleeve; 320 is a bevel gear set; 321 is a first bevel gear; 322 is a second bevel gear; 330 is a first operating rod; 340 is a rocker arm;

[0040] 400 is an angle adjusting mechanism; 410 is a sector adjusting plate; 420 is a cylindrical gear; 430 is a second operating rod; 440 is an operating wheel;

[0041] 500 is a spraying mechanism; 510 is a flow dividing cylinder; 520 is a nozzle;

[0042] 600 is a gear box; 700 is a third operating rod; 800 is a control valve; 900 is a handle. DETAILED DESCRIPTION

[0043] The core of the utility model is to provide a nuclear power station fuel transmission pool and equipment decontamination device, the nuclear power station fuel transmission pool and equipment decontamination device can improve the washing and hot spot removal effect of radioactive material, shorten the decontamination time, improve the decontamination efficiency, and reduce the radiation dose of personnel.

[0044] 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, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0045] Please refer to Figures 1 to 4 Figure 1 The structure schematic view of the nuclear power station fuel transmission pool and equipment decontamination device provided in the embodiments of the utility model, Figure 2 The front view of the nuclear power station fuel transmission pool and equipment decontamination device provided in the embodiments of the utility model, Figure 3 The side view of the nuclear power station fuel transmission pool and equipment decontamination device provided in the embodiments of the utility model, Figure 4 The top view of the nuclear power station fuel transmission pool and equipment decontamination device provided in the embodiments of the utility model.

[0046] The utility model discloses a nuclear power station fuel transmission pool and equipment decontamination device, the nuclear power station fuel transmission pool and equipment decontamination device include movable track support 100 and device main body.

[0047] Among them, movable track support 100 is used to erect on the guardrail of both sides of fuel transmission pool, and movable track support 100 can reciprocate along the guardrail.

[0048] The device body comprises an adjusting rod 200, a lifting driving assembly 300, an angle adjusting mechanism 400 and a spraying mechanism 500, the adjusting rod 200 is vertically arranged, the lifting driving assembly 300, the angle adjusting mechanism 400 and the spraying mechanism 500 can be operated by electricity and / or manually, the lifting driving assembly 300 and the angle adjusting mechanism 400 are arranged on the movable track support 100, the adjusting rod 200 is in driving connection with the lifting driving assembly 300 and the angle adjusting mechanism 400 respectively, the lifting driving assembly 300 is used for driving the adjusting rod 200 to lift, the angle adjusting mechanism 400 is used for driving the adjusting rod 200 to rotate around the axis of the adjusting rod 200, and the spraying mechanism 500 is arranged at the bottom end of the adjusting rod 200 and is used for being connected with a water source.

[0049] Compared with the prior art, the floating ball hydrophobic valve nuclear power station fuel transmission pool and the equipment decontamination device provided by the embodiment of the utility model are applied first, the movable track support 100 is erected on the guardrails on both sides of the fuel transmission pool, the position of the nozzle 520 of the spraying device in the horizontal direction can be adjusted by moving the movable track support 100, the position of the nozzle 520 of the spraying device in the vertical direction can be adjusted by the lifting driving assembly 300, and the orientation of the nozzle 520 of the spraying mechanism 500 can be adjusted by the angle adjusting mechanism 400, so that the pool bottom, the pool wall and the equipment of the fuel transmission pool can be accurately cleaned as required, personnel do not need to go up and down the pool for hot spot cleaning, the time for personnel to go up and down the pool is saved, the flushing effect on radioactive substances and the hot spot removal effect can be effectively improved, the decontamination consumption time is shortened, the decontamination efficiency is improved, and the radiation dose of personnel is reduced.

[0050] As shown in Figures 1 to 4 The movable track support 100 comprises a frame body 110 and traveling wheels 120, wherein the frame body 110 comprises support beams 111 and connecting beams 112, the two support beams 111 are arranged in parallel side by side, the length of the two support beams 111 should be equal to or approximately equal to the distance between the guardrails on both sides of the fuel transmission pool, at least two connecting beams 112 are arranged between the two support beams 111, and the two ends of the connecting beam 112 are connected with the two support beams 111 respectively, and at least two traveling wheels 120 are arranged at the two ends of the frame body 110. Figures 1 to 4 In the embodiment shown in

[0051] In order to adapt to fuel transfer pools with different spans, the support beam 111 can adopt a telescopic structure, so that the movable track support 100 can be applied to fuel transfer pools with different spans.

[0052] As shown in Figure 5 , the lifting driving assembly 300 comprises a sleeve 310 and a first rotary driving device, wherein the sleeve 310 is sleeved on the adjusting rod 200, the inner wall of the sleeve 310 is provided with an internal thread, the outer wall of the adjusting rod 200 is provided with an external thread, the internal thread of the sleeve 310 is threadedly matched with the external thread of the adjusting rod 200 to form a screw pair, and the first rotary driving device is drivingly matched with the sleeve 310 to drive the sleeve 310 to rotate. The first rotary driving device can be an electric motor or a manual operating structure.

[0053] Specifically, in a specific embodiment of the present application, as shown in Figure 5 , the first rotary driving device comprises a bevel gear set 320 and a first operating rod 330, wherein the bevel gear set 320 comprises a first bevel gear 321 and a second bevel gear 322, the first bevel gear 321 is coaxially arranged on the sleeve 310, the second bevel gear 322 is engaged with the first bevel gear 321, one end of the first operating rod 330 is coaxially connected with the second bevel gear 322, the first operating rod 330 extends in a horizontal direction, and the other end of the first operating rod 330 is provided with a rocker arm 340. The bevel gear set 320 changes the input direction of force while transmitting the force, which facilitates personnel operation.

[0054] As shown in Figure 5 , in an embodiment of the present application, the angle adjusting mechanism 400 comprises a sector adjusting plate 410, a cylindrical gear 420 and a second operating rod 430, wherein the small end of the sector adjusting plate 410 is reciprocatingly arranged on the adjusting rod 200 in the axial direction of the adjusting rod 200, the large end of the sector adjusting plate 410 is provided with an arc-shaped rack, the cylindrical gear 420 is engaged with the arc-shaped rack, when the cylindrical gear 420 rotates, the cylindrical gear 420 drives the sector adjusting plate 410 to rotate the adjusting rod 200 through the arc-shaped rack, thereby adjusting the orientation of the nozzle 520 of the spraying mechanism 500, one end of the second operating rod 430 is coaxially connected with the cylindrical gear 420, the second operating rod 430 extends in a horizontal direction, and the extending direction of the second operating rod 430 is parallel to the extending direction of the first operating rod 330, that is, the first operating rod 330 and the second operating rod 430 both extend toward the same direction, so as to facilitate user operation, and the other end of the second operating rod 430 is provided with an operating wheel 440.

[0055] Further optimization of the above technical solutions, the angle adjusting mechanism 400 further comprises a limiting assembly, the limiting assembly comprises a first limiting stop and a second limiting stop, the first limiting stop and the second limiting stop are respectively arranged on the front and back sides of the rotating direction of the fan-shaped adjusting plate 410, and the first limiting stop and the second limiting stop are in contact with the fan-shaped adjusting plate 410 when the fan-shaped adjusting plate 410 rotates to the preset position, so as to limit the rotation angle of the fan-shaped adjusting plate 410.

[0056] Of course, the first limiting stop and the second limiting stop in the above-mentioned limiting assembly can also be arranged at both ends of the arc-shaped rack of the fan-shaped adjusting plate 410. When the cylindrical gear 420 contacts the first limiting stop or the second limiting stop, the cylindrical gear 420 cannot continue to rotate, thereby achieving limiting. In this case, the size of the central angle of the fan-shaped adjusting plate 410 is the angle range that the fan-shaped adjusting plate 410 can rotate.

[0057] As shown in Figures 1 to 5 , the device body further comprises a gear box 600, the sleeve 310, the bevel gear set 320, the fan-shaped adjusting plate 410, the cylindrical gear 420 and the limiting assembly are arranged in the gear box 600, and the gear box 600 is arranged on the movable rail support 100, one end of the first operating rod 330 and the second operating rod 430 extends into the gear box 600, and the other end extends out of the gear box 600.

[0058] In order to improve the uniformity of stress between the sleeve 310 and the adjusting rod 200, in an embodiment of the present application, the bevel gear set 320 comprises at least two second bevel gears 322, each second bevel gear 322 is arranged in a circumferential direction, and is rotatably arranged on the inner wall of the gear box 600, and one of the second bevel gears 322 is connected to the first operating rod 330.

[0059] As shown in Figures 1 to 5 , in order to facilitate the movement of the movable rail support 100 and the operation of the first operating rod 330, in an embodiment of the present application, the device body further comprises a third operating rod 700, the third operating rod 700 is sleeved outside the first operating rod 330, one end of the third operating rod 700 is connected to the gear box 600, the other end of the third operating rod 700 is provided with a handle 900, when the movable rail support 100 needs to be moved, the user can hold the handle 900 to push the movable rail support 100 along the guardrail, when the first operating rod 330 and the second operating rod 430 need to be operated, one hand can hold the handle 900 to keep stable, and the other hand can operate the first operating rod 330 and the second operating rod 430.

[0060] Furthermore, in one embodiment of this application, the adjusting rod 200 is hollow, and the spraying mechanism 500 includes a diverting cylinder 510 and nozzles 520. The diverting cylinder 510 is disposed at the lower end of the adjusting rod 200, and the inner cavity of the diverting cylinder 510 is connected to the inner cavity of the adjusting rod 200 to form a flow channel. The diverting cylinder 510 is used to divert the wastewater in the flow channel to each nozzle 520. The top end of the adjusting rod 200 is provided with a control valve 800 for controlling the flow rate. At least one row of nozzles 520 is provided on the diverting cylinder 510, and the nozzles 520 in the same row are arranged at intervals along the length direction of the diverting cylinder 510.

[0061] like Figures 1 to 3 As shown, in one specific embodiment of this application, the flow divider 510 is provided with two rows of nozzles 520, and the two rows of nozzles 520 are inclined downward from both sides of the flow divider 510.

[0062] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A nuclear power plant fuel transfer pool and equipment decontamination apparatus, characterized by, The utility model relates to a kind of fuel transfer water pool spraying device, including: Movable rail support (100), the movable rail support (100) is used to erect on guardrail of both sides of fuel transfer water pool, and the movable rail support (100) can reciprocate along the guardrail; Device main body, including adjusting rod (200), lifting drive assembly (300), angle adjusting mechanism (400) and spraying mechanism (500), the lifting drive assembly (300) and the angle adjusting mechanism (400) are arranged in the movable rail support (100), the adjusting rod (200) is respectively connected with the lifting drive assembly (300) and the angle adjusting mechanism (400) transmission, the lifting drive assembly (300) is used to drive the adjusting rod (200) to lift, the angle adjusting mechanism (400) is used to drive the adjusting rod (200) rotation around its own axis, the spraying mechanism (500) is arranged at the bottom end of the adjusting rod (200), and the spraying mechanism (500) is used to be connected with water source.

2. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 1, wherein, The movable rail support (100) includes frame body (110) and walking wheel (120), and the both ends of the frame body (110) are respectively provided with at least two walking wheels (120), the circumferential surface of the walking wheel (120) is provided with clamping groove (120a) for clamping with the guardrail, and the lifting drive assembly (300) and the angle adjusting mechanism (400) are arranged in the frame body (110).

3. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 1, wherein, The lifting drive assembly (300) includes: Sleeve (310), the sleeve (310) is sleeved on the adjusting rod (200), and the sleeve (310) is threadedly matched with the adjusting rod (200); First rotary drive device, the first rotary drive device is transmission matched with the sleeve (310), to drive the sleeve (310) rotation.

4. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 3, wherein, The first rotary drive device includes: Bevel gear set (320), the bevel gear set (320) includes first bevel gear (321) and second bevel gear (322), the first bevel gear (321) is coaxially arranged on the sleeve (310) with the sleeve (310), and the second bevel gear (322) is engaged with the first bevel gear (321); First joystick (330), one end of the first joystick (330) is coaxially connected with the second bevel gear (322), the first joystick (330) extends along the horizontal direction, and the other end of the first joystick (330) is provided with rocker arm (340).

5. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 4, wherein, The angle adjusting mechanism (400) includes: Fan-shaped adjusting plate (410), the small end of the fan-shaped adjusting plate (410) is arranged on the adjusting rod (200) and can reciprocate along the axial direction of the adjusting rod (200), and the large end of the fan-shaped adjusting plate (410) is provided with arc-shaped rack; Cylindrical gear (420), the cylindrical gear (420) is engaged with the arc-shaped rack; A second operating rod (430) is coaxially connected to the cylindrical gear (420) at one end, extends in a horizontal direction, and has an extension direction parallel to that of the first operating rod (330). The other end of the second operating rod (430) is provided with an operating wheel (440).

6. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 5, wherein, The angle adjusting mechanism (400) further comprises a limiting assembly, which comprises a first limiting stopper and a second limiting stopper arranged on the front and back sides of the rotating direction of the fan-shaped adjusting plate (410). The first limiting stopper and the second limiting stopper are in contact with the fan-shaped adjusting plate (410) when the fan-shaped adjusting plate (410) rotates to a preset position, so as to limit the rotating angle of the fan-shaped adjusting plate (410).

7. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 6, wherein, The device body further comprises a gear box (600), in which the sleeve (310), the bevel gear set (320), the fan-shaped adjusting plate (410), the cylindrical gear (420), and the limiting assembly are arranged. The first operating rod (330) and one end of the second operating rod (430) extend into the gear box (600), and the other end extends out of the gear box (600).

8. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 7, wherein, The bevel gear set (320) comprises at least two second bevel gears (322), which are arranged in a circumferential direction and are rotatably arranged on the inner wall of the gear box (600). One of the second bevel gears (322) is connected to the first operating rod (330).

9. The nuclear power plant fuel transfer cask and equipment decontamination apparatus of claim 7, wherein, The device body further comprises a third operating rod (700), which is sleeved on the first operating rod (330). One end of the third operating rod (700) is connected to the gear box (600), and the other end is provided with a handle (900).

10. A nuclear fuel transport pool and equipment decontamination apparatus according to any one of claims 1 to 9, wherein, The adjusting rod (200) is hollow. The spraying mechanism (500) comprises: A flow dividing cylinder (510) is arranged at the lower end of the adjusting rod (200). The inner cavity of the flow dividing cylinder (510) is in communication with the inner cavity of the adjusting rod (200) to form a flow channel. A control valve (800) for controlling flow is arranged at the top end of the adjusting rod (200). A plurality of nozzles (520) are arranged on the flow dividing cylinder (510). The nozzles (520) in the same row are arranged in a length direction of the flow dividing cylinder (510).

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