Dust collection head and method for residue recovery of nuclear fuel circulation dissolver

Abstract

The invention belongs to the field of nuclear fuel circulation, and particularly relates to a dust collection head and method for recycling residues of a nuclear fuel circulation dissolver. The residue recycling dust collection head comprises a dust collection head body 1, a suction head rotating structure 2, a baffle wall supporting structure 3 and a vibration structure 4. The dust collection head body 1 comprises a dust collection head shell 1.2, an exhaust pipe 1.4 and a dust collection hose 1.5, the suction head rotating structure 2 and the baffle wall supporting structure 3 are assembled on the dust collection head shell 1.2 and located in the dust collection head body 1, and the vibration structure 4 is assembled on the exhaust pipe 1.4. Compared with the prior art, large residues can be smashed, the problems that a pipeline is blocked and large residues cannot be treated are effectively solved, the reliability and efficiency of residue cleaning work are improved, the dust collection head can achieve automatic monitoring and closing of falling and leakage of an air pipe, and the dust collection efficiency is improved. Possible negative effects on the environment are effectively reduced, and the stability and the safety of the equipment are enhanced.

Description

Technical Field

[0001] The invention belongs to the field of nuclear fuel circulation, and in particular relates to a dust suction head and a method for retrieving residue from a nuclear fuel circulation dissolver. Background Art

[0002] The dissolver is a key equipment in the nuclear fuel cycle dissolution process. If the residue at the bottom of the dissolver is not retrieved in a timely and effective manner, the dissolver delivery pipeline may be blocked, making the entire dissolver unusable. Therefore, retrieving the residue at the bottom of the dissolver is an important task. By retrieving the residue at the bottom of the dissolver, the smooth flow of the process can be ensured, and resource waste can also be reduced. However, since the dissolver is in a highly radioactive environment, it is difficult for personnel to carry out residue retrieval operations at close range, and a large amount of manpower and material resources are required, which can easily cause problems such as excessive radiation doses for operators and pollution of the working environment.

[0003] At present, the method for treating the residue in the dissolver is usually to generate strong suction through a vacuum pump or a vacuum generator to suck out the residue in the dissolver, and then recover the residue through filtration separation, but there are problems such as poor retrieval effect and small cleaning range. Patent CN217061470U discloses a device for long-distance retrieval of waste cladding residue in a radioactive plant, which is mainly used for long-distance retrieval and transportation of waste cladding residue in a radioactive plant, ensuring the cleanliness of the bottom of the dissolver and the stable operation of the system, but this utility model has a complex structure and cannot solve the problem of excessive residue blocking the suction port of the retrieval device.

[0004] In the actual working process, the size of the residue is uncontrolled. When the residue is smaller than the suction port size, the residue can be sucked out smoothly and the relevant separation operation can be carried out. However, when the residue is too large, it becomes very difficult to suck it out with the suction head alone, or even impossible to recover it. When the size of the residue is close to the size of the suction port, it may cause the suction port to be blocked and cause the equipment to fail.

[0005] Therefore, the current method for retrieving residues in a dissolver still has the problem that the residues in the residue retrieving device are too large and the working efficiency is low during the cleaning process. Summary of the invention

[0006] The purpose of the present invention is to solve at least one of the above problems and to provide a vacuum head and method for retrieving residue from a nuclear fuel cycle dissolver, so as to solve the problem in the prior art that the residue at the bottom of the dissolver of the nuclear fuel cycle system is large in volume and difficult to pass through the pipeline and is difficult to recover, so as to achieve efficient and safe retrieval of the residue in the dissolver.

[0007] In view of the above shortcomings, and in order to solve the problem of excessive residue in the residue retrieval suction head during the cleaning process and improve work efficiency, the patent of the present invention designs a dissolver residue retrieval suction head with a vibration function.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] One of the technical solutions of the present invention is to provide a suction head for retrieving residue from a nuclear fuel cycle dissolver, comprising: a suction head body, a suction head rotating structure and a vibration structure;

[0010] The dust collector head body comprises a dust collector head shell, an exhaust pipe and a dust suction hose, the exhaust end of the exhaust pipe is connected to the dust collector head body, and the exhaust end of the dust suction hose is connected to the suction end of the exhaust pipe;

[0011] The suction head rotating structure is mounted inside the dust collector head shell, and the vibration structure is mounted on the exhaust pipe to break up the residues whose cross-sectional area is larger than the cross-sectional area of ​​the dust collector hose.

[0012] Furthermore, the dust suction hose is connected to the exhaust pipe through a clamp.

[0013] When the vacuum head starts working, the vacuum head is connected to the residue retrieval device, and the suction force generated passes through the residue retrieval device through the exhaust pipe outlet at the vacuum head, and is transmitted to the vacuum hose through the exhaust pipe. The vacuum hose is used to absorb debris and residue in the deep well and discharge it into the debris collection bucket on the surface through the exhaust pipe.

[0014] Furthermore, the suction head rotating structure includes a swing cylinder, a gear set and a fixed ring; the swing cylinder is fixed on the dust collector head housing, the gear set connects the swing cylinder and the fixed ring, and the swing cylinder transmits the rotation output to the fixed ring through the gear set.

[0015] Furthermore, the dust suction hose and the exhaust pipe are non-concentrically arranged, and the gear group, the fixed ring and the exhaust pipe are connected in sequence. The swing cylinder drives the gear group to rotate, and the gear group drives the exhaust pipe to rotate through the fixed ring, thereby driving the dust suction hose and the vibration structure to rotate, so as to increase the cleaning range of the residue and improve the working efficiency of cleaning the residue.

[0016] Furthermore, the gear set includes a large gear and a small gear, the swing cylinder is connected to the large gear, the large gear is meshingly connected to the small gear, and the small gear is connected to a fixing ring and fixed to the exhaust pipe via the fixing ring.

[0017] Furthermore, the suction head rotating structure also includes a bearing, which is assembled at the lower end of the fixing ring and connected to the fixing ring shaft, in order to reduce the friction between the fixing ring and the dust collector head shell.

[0018] Further, the vibration structure includes a vibration cylinder, a vibration rod and a spiral hose;

[0019] The vibrating cylinder is fixed on the exhaust pipe, the vibrating rod is connected to the output end of the vibrating cylinder, the spiral hose connects the air source and the vibrating cylinder, the gas is passed into the vibrating cylinder to drive the vibrating rod to vibrate, and a solenoid valve is arranged between the air source and the vibrating cylinder.

[0020] Furthermore, the vibration rod is parallel to the dust suction hose in the height direction and rotates together with the dust suction hose.

[0021] Furthermore, the vibration structure also includes a vibration cylinder fixed base, the vibration cylinder fixed base is fixed to the exhaust pipe through a buckle, and the vibration cylinder is fixed to the vibration cylinder fixed base through bolts, and then fixed to the exhaust pipe.

[0022] Furthermore, the spiral hose is wound around the vertical section of the exhaust pipe, which can prevent the spiral hose from being entangled with other components during the rotation of the vibration structure, thereby affecting the operation of the vacuum cleaner head.

[0023] When encountering large pieces of residue during the residue retrieval process, the gas source passes the gas into the vibrating cylinder through the spiral hose. The vibrating cylinder obtains power to transmit the vibration to the vibrating rod. The vibrating rod contacts the large pieces of residue, so that the large pieces of residue are broken into small pieces. This is beneficial to improve the efficiency of residue cleaning.

[0024] Furthermore, the vibration structure also includes a vibration structure control gas circuit, and the vibration structure control gas circuit includes a solenoid valve, a pressure regulating valve and a flow switch connected in sequence;

[0025] The gas outlet of the gas source is connected to the electromagnetic valve, the electromagnetic valve is connected to the pressure regulating valve, the flow switch is connected to the vibrating cylinder, and the gas output by the gas source is sequentially input into the vibrating cylinder through the electromagnetic valve, the pressure regulating valve and the flow switch.

[0026] Furthermore, the vacuum cleaner head also includes a baffle wall support structure, which includes a telescopic cylinder and a baffle; the telescopic cylinder is fixed on the vacuum cleaner head shell and is located inside the vacuum cleaner head body, the baffle is connected to the piston rod of the telescopic cylinder, and the operation of the telescopic cylinder controls the baffle to extend out of the vacuum cleaner head shell, and the solenoid valve is also connected to the air source and the telescopic cylinder.

[0027] Furthermore, the telescopic cylinder is fixed to the outer shell of the dust collector head by bolts.

[0028] Furthermore, the telescopic cylinders are symmetrically arranged inside the vacuum cleaner head body to maintain force balance.

[0029] The expansion and contraction of the piston rod of the telescopic cylinder is controlled by controlling the pressure of the introduced gas to control the horizontal movement of the baffle, thereby controlling the distance between the dust collection head and the inner wall of the dissolver. At the same time, the dust collection head can be relatively fixed on the inner wall of the dissolver to avoid vibration of the dust collection head and collision with the wall during the process of crushing the residue. When reaching the working position, the dust collection head can be relatively fixed on the inner wall of the dissolver by opening the baffle.

[0030] Furthermore, an overflow valve is arranged between the gas source and the solenoid valve. When the pressure in the gas circuit is greater than the pressure set by the overflow valve, the overflow valve opens, and the gas output by the gas source is directly discharged from the gas circuit.

[0031] Furthermore, the solenoid valve is a two-position two-way solenoid valve, the air source is an air pump, the right position of the two-position two-way solenoid valve connects the air pump with the telescopic cylinder, and the left position of the two-position two-way solenoid valve connects the air pump with the vibrating cylinder, controlling the air pump to intake air into the telescopic cylinder or the vibrating cylinder.

[0032] Furthermore, when the flow rate flowing through the flow switch is higher or lower than the flow rate under the rated operating conditions in the circuit, it is determined that the air circuit of the telescopic cylinder or the vibration cylinder is leaking, and the flow switch generates a corresponding electrical signal, connecting the right position of the two-position two-way solenoid valve to the air circuit and closing the air source at the same time.

[0033] Furthermore, the flow switch can be used to automatically stop the gas supply when leakage occurs in the flow switch vibration gas path.

[0034] Furthermore, the intake pressure can be adjusted by using a pressure regulating valve and a pressure gauge to cope with different working conditions and achieve the reliability and adaptability of the vibration structure.

[0035] Furthermore, the overflow valve is electrically connected to the silencer I, and the vibration cylinder is electrically connected to the silencer II, which helps to eliminate the noise generated during the gas overflow and vibration process.

[0036] Furthermore, the vibration structure control air path can be controlled by a control console.

[0037] The second technical solution of the present invention is to provide a method for retrieving dissolver residue by using the above-mentioned vacuum head for retrieving nuclear fuel cycle dissolver residue, and the specific steps are as follows:

[0038] S1: Connect the dust collector head to the residue retrieval device;

[0039] S2: Control the residue retrieval device to lower the vacuum head into the dissolver;

[0040] S3: driving the vibration structure to operate and transmit the vibration to the residue to crush the residue, and at the same time opening the suction head rotating structure to drive the exhaust pipe to rotate, thereby driving the vibration structure and the dust suction hose connected to the exhaust pipe to rotate, and the residue is sucked by the dust suction hose and enters the residue retrieval device through the exhaust pipe;

[0041] S4: After the cleaning is completed, the vacuum head is closed and the residue retrieval device is controlled to rise.

[0042] Furthermore, in step S1, the residue retrieval device is a device disclosed in patent CN217061470U for long-distance retrieval of waste cladding residue in a radioactive plant.

[0043] Furthermore, in step S1, the vacuum head is installed on the residue retrieval device, that is, the air pump is connected, and the output end of the exhaust pipe is connected to the residue retrieval device.

[0044] Furthermore, in step S2, the vacuum head is installed on the residue retrieval device, and the lifting and lowering of the residue retrieval device is controlled by the control console, thereby controlling the lifting and lowering of the vacuum head.

[0045] Furthermore, in step S2, the right position of the two-position two-way solenoid valve is connected to the control air circuit of the baffle wall support structure through the control console, and the air pump is controlled by the console to provide pressure to the telescopic cylinder air intake to push the baffle connected to the piston rod of the telescopic cylinder outward. When the baffle contacts the inner wall of the dissolver, the air intake into the telescopic cylinder is stopped. At this time, due to the friction between the baffle and the inner wall, the dust collector head is relatively fixed on the inner wall of the dissolver and is limited inside the dissolver.

[0046] Furthermore, in step S3, the control console controls the left position of the two-position two-way solenoid valve to be connected to the control air path of the vibration structure. At this time, the air pump provides power to the vibration cylinder, and the vibration cylinder drives the vibration rod to start vibrating.

[0047] Furthermore, in step S3, the pressure value input to the vibration cylinder can be adjusted by adjusting the pressure regulating valve, thereby changing the vibration frequency of the vibration cylinder, thereby achieving different operations for different working conditions.

[0048] Furthermore, in step S3, if the gas path is blocked during operation, the pressure in the entire gas path system will continue to rise. When the pressure is greater than the pressure set by the overflow valve, the overflow valve opens and the air pump is directly connected to the outside world to avoid damage to the entire system.

[0049] Furthermore, in step S3, if the flow rate flowing through the flow switch during operation is much higher than the flow rate under rated working conditions in the circuit, it indicates that a leak has occurred in the vibration cylinder circuit. Since the baffle wall support structure and the vibration structure share an air pump, if the flow rate flowing through the flow switch is much lower than the flow rate under rated working conditions in the circuit, it indicates that a leak has occurred in the baffle wall support structure circuit.

[0050] Furthermore, in step S3, if the flow switch detects an air leakage during operation, the flow switch will generate a corresponding electrical signal, promptly connect the right position of the two-position two-way solenoid valve to the air circuit, and at the same time close the air source to ensure the safety and reliability of the vacuum cleaner head.

[0051] Further, in step S4, after the cleaning work is completed, the air pump is controlled by the operating table to supply air to the two telescopic cylinders. At this time, the telescopic cylinder is subjected to pressure to retract the baffle connected to the piston rod of the telescopic cylinder inward, and the limit of the dust collector head inside the dissolver is cancelled. Further, in step S4, after the baffle is retracted, the air pump is controlled to stop supplying air source to the telescopic cylinder, and the baffle wall support structure and the vibration structure stop working.

[0052] Furthermore, in step S4, closing the vacuum head means closing the vacuum head rotation structure, the baffle supporting wall structure and the vibration structure.

[0053] Compared with the prior art, the present invention has the following advantages:

[0054] 1. The present invention adds a vibrating cylinder at the end of the residue retrieval suction head, which can crush larger pieces of residue through vibration, effectively solving the problems of pipeline blockage and inability to handle large residues, and improving the reliability and efficiency of residue cleaning work.

[0055] 2. The present invention adopts a residue retrieval vacuum cleaner head which is a combination of a rotatable exhaust pipe and a spiral hose. The exhaust pipe is driven to rotate by a swinging cylinder, which is beneficial to increasing the retrieval area. The structural characteristics of the spiral hose itself can be used to prevent the air pipe from being entangled with other structures of the vacuum cleaner head during rotation. At the same time, the simple structure is conducive to cost savings.

[0056] 3. The present invention adds self-detection gas circuit technology to the gas circuit, which can realize automatic monitoring and response to gas pipe detachment and leakage. This enables the vacuum cleaner head to detect gas circuit problems in time during operation and take automatic response measures, effectively reducing the possible negative impact on the environment and enhancing the stability and safety of the equipment. This advanced design not only improves the overall performance of the vacuum cleaner head, but also meets today's high standards for environmental protection and reliability.

[0057] 4. The present invention mainly utilizes gas as a power source, and at the same time selects pure mechanical structures and cylinders as much as possible in the selection of power transmission and actuators, which greatly improves its ability to adapt to various harsh environments and ensures the long-term effective operation of the vacuum cleaner head in various harsh environments. The vacuum cleaner head is safer and more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the structure of the residue recovery suction head of the present invention.

[0059] Figure 2 It is a structural schematic diagram of the suction head rotating structure of the residue retrieval suction head of the present invention.

[0060] Figure 3 It is a schematic diagram of the vibration structure control gas path in the present invention.

[0061] In the figure: 1-dust head body; 1.1-upper cover plate; 1.2-dust head shell; 1.3-lower sealing plate; 1.4-exhaust pipe; 1.5-dust hose; 2-suction head rotation structure; 2.1-swing cylinder; 2.2-large gear; 2.3-small gear; 2.4-fixing ring; 2.5-bearing; 3-baffle wall support structure; 3.1-telescopic cylinder; 3.2-baffle; 4-vibration structure; 4.1-vibration cylinder fixed base; 4.2-vibration cylinder; 4.3-vibration rod; 4.4-spiral hose; 4.5-pressure regulating valve; 4.6-pressure gauge; 4.7-silencer I; 4.8-overflow valve; 4.9-silencer II; 4.10-flow switch; 4.11-two-position two-way solenoid valve; 5-air pump. DETAILED DESCRIPTION

[0062] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0063] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0066] In order to effectively solve the problem of residue at the bottom of the dissolver, the patent of the present invention designs a vacuum head and method for retrieving residue from a nuclear fuel cycle dissolver. In order to increase the cleaning range and enhance the cleaning effect, the vacuum head adds a rotating mechanism to the vacuum head, and the angle of the vacuum head of the residue cleaning device is adjusted by cooperating with the lifting device. At the same time, in order to prevent the vacuum head from causing the entire device to shake and deflect during the rotation process, a supporting wall structure is added to the vacuum head to avoid shaking and deflecting of the vacuum head, and to avoid collision between the vacuum head and the residue retrieval device and the inner wall of the dissolver, thereby causing damage to the device. In this way, the reliability of the residue retrieval vacuum head can be improved while increasing the residue retrieval efficiency.

[0067] Example 1

[0068] See also Figure 1-Figure 3 As shown, the present invention provides a suction head for retrieving residue from a nuclear fuel cycle dissolver, comprising: a suction head body 1, a suction head rotating structure 2, a baffle supporting wall structure 3 and a vibration structure 4;

[0069] The dust collector head body 1 comprises an upper cover plate 1.1, a dust collector head shell 1.2, a lower sealing plate 1.3, an exhaust pipe 1.4 and a dust suction hose 1.5. The upper cover plate 1.1, the dust collector head shell 1.2 and the lower sealing plate 1.3 are connected in sequence. The discharge end of the exhaust pipe 1.4 is connected to the dust collector head body 1, and the discharge end of the dust suction hose 1.5 is connected to the suction end of the exhaust pipe 1.4.

[0070] The suction head rotating structure 2 and the baffle supporting wall structure 3 are mounted on the dust collector head housing 1.2 and are located inside the dust collector head body 1. The vibration structure 4 is mounted on the exhaust pipe 1.4. The baffle supporting wall structure 3 and the vibration structure 4 are both connected to the air source through the dust collector head. The vibration structure 4 is used to break up the residue with a cross-sectional area larger than the cross-sectional area of ​​the dust collection hose 1.5.

[0071] The suction head rotating structure 2 includes a swing cylinder 2.1, a large gear 2.2, a small gear 2.3, a fixed ring 2.4 and a bearing 2.5. The swing cylinder 2.1 is fixed on the dust collector housing 1.2. The swing cylinder 2.1 is connected to the large gear 2.2. The large gear 2.2 is meshed with the small gear 2.3. The small gear 2.3 is connected to the fixed ring 2.4 and fixed to the exhaust pipe 1.4 through the fixed ring 2.4. The bearing 2.5 is assembled at the lower end of the fixed ring 2.4 and is connected to the fixed ring 2.4 axis. The swing cylinder 2.1 transmits the rotation output to the fixed ring 2.4 through the large gear 2.2 and the small gear 2.3.

[0072] The baffle supporting wall structure 3 includes a telescopic cylinder 3.1 and a baffle 3.2. The telescopic cylinder 3.1 is fixed on the dust collector housing 1.2 and is located inside the dust collector body 1. The baffle 3.2 is connected to the piston rod of the telescopic cylinder 3.1. The telescopic cylinder 3.1 operates to control the baffle 3.2 to extend out of the dust collector housing 1.2. The solenoid valve is also connected to the air source and the telescopic cylinder 3.1.

[0073] The vibration structure 4 includes a vibration cylinder fixed base 4.1, a vibration cylinder 4.2, a vibration rod 4.3 and a spiral hose 4.4. The vibration cylinder fixed base 4.1 is fixed to the exhaust pipe 1.4 by a buckle. The vibration cylinder 4.2 is fixed to the vibration cylinder fixed base 4.1 by bolts, and then fixed to the exhaust pipe 1.4. The vibration rod 4.3 is connected to the output end of the vibration cylinder 4.2. The spiral hose 4.4 is wound around the vertical section of the exhaust pipe 1.4. The spiral hose 4.4 connects the air source and the vibration cylinder 4.2, passes the gas into the vibration cylinder 4.2, and drives the vibration rod 4.3 to vibrate. An electromagnetic valve is arranged between the air source and the vibration cylinder 4.2.

[0074] When the vacuum head starts working, the vacuum head is connected to the residue retrieval device, and the suction force generated passes through the residue retrieval device through the exhaust pipe 1.4 outlet at the vacuum head, and is transmitted to the vacuum hose 1.5 through the exhaust pipe 1.4. The vacuum hose 1.5 is used to absorb debris and residue in the deep well and discharge them through the exhaust pipe 1.4.

[0075] See also Figure 2 As shown, the dust suction hose 1.5 is connected to the exhaust pipe 1.4 through a clamp, the dust suction hose 1.5 and the exhaust pipe 1.4 are non-concentrically arranged, the large gear 2.2, the small gear 2.3, the fixing ring 2.4 and the exhaust pipe 1.4 are connected in sequence, the swing cylinder 2.1 drives the large gear 2.2 to rotate, the large gear 2.2 drives the small gear 2.3 to rotate, the small gear 2.3 drives the exhaust pipe 1.4 to rotate through the fixing ring 2.4, and then drives the dust suction hose 1.5 and the vibration structure 4 to rotate, the purpose is to increase the cleaning range of the residue and improve the working efficiency of cleaning the residue.

[0076] The telescopic cylinder 3.1 is fixed to the dust collector housing 1.2 by bolts and is symmetrically arranged inside the dust collector body 1 to maintain force balance.

[0077] The vibrating rod 4.3 is parallel to the dust suction hose 1.5 in the height direction and rotates together with the dust suction hose 1.5.

[0078] The piston rod of the telescopic cylinder 3.1 is controlled to be extended and retracted by controlling the pressure of the gas introduced, so as to control the horizontal movement of the baffle 3.2, thereby controlling the distance between the dust collector head and the inner wall of the dissolver. At the same time, the dust collector head can be relatively fixed on the inner wall of the dissolver to avoid vibration of the dust collector head and collision with the wall during the process of crushing the residue. When reaching the working position, the dust collector head can be relatively fixed on the inner wall of the dissolver by opening the baffle 3.2.

[0079] When encountering large pieces of residue during the residue retrieval process, the gas source passes the gas into the vibrating cylinder 4.2 through the spiral hose 4.4, and the vibrating cylinder 4.2 obtains power to transmit the vibration to the vibrating rod 4.3, and the vibrating rod 4.3 contacts the large pieces of residue, so that the large pieces of residue are broken into small pieces of residue, which is conducive to improving the efficiency of residue cleaning.

[0080] The spiral hose 4.4 is wound around the vertical section of the exhaust pipe 1.4, which can prevent the spiral hose 4.4 from being entangled with other components during the rotation of the vibration structure 4, thereby affecting the operation of the dust collector.

[0081] See also Figure 3 As shown, the vibration structure 4 also includes a vibration structure control air circuit, and the control air circuit includes a solenoid valve, a pressure regulating valve 4.5 and a flow switch 4.10 that are connected in sequence;

[0082] The gas outlet of the gas source is connected to the electromagnetic valve, the electromagnetic valve is connected to the pressure regulating valve 4.5, the flow switch 4.10 is connected to the vibrating cylinder 4.2, and the gas output by the gas source is sequentially input into the vibrating cylinder 4.2 through the electromagnetic valve, the pressure regulating valve 4.5 and the flow switch 4.10.

[0083] A relief valve 4.8 is arranged between the gas source and the two-position two-way solenoid valve 4.11. When the pressure in the gas circuit is greater than the pressure set by the relief valve 4.8, the relief valve 4.8 opens, and the gas output by the gas source is directly discharged from the gas circuit.

[0084] The solenoid valve is a two-position two-way solenoid valve 4.11, and the air source is an air pump 5. The right position of the two-position two-way solenoid valve 4.11 connects the air pump 5 with the telescopic cylinder 3.1, and the left position of the two-position two-way solenoid valve 4.11 connects the air pump 5 with the vibrating cylinder 4.2, controlling the air pump 5 to inlet air into the telescopic cylinder 3.1 or the vibrating cylinder 4.2.

[0085] When the flow rate flowing through the flow switch 4.10 is higher or lower than the flow rate under the rated working condition in the circuit, the gas circuit of the telescopic cylinder 3.1 or the vibrating cylinder 4.2 leaks, and the flow switch 4.10 generates a corresponding electrical signal, connects the two-position two-way solenoid valve 4.11 to the gas circuit in the right position, and closes the gas source at the same time.

[0086] The flow switch 4.10 can be used to automatically stop the gas supply when leakage occurs in the vibration gas path of the flow switch 4.10.

[0087] The intake pressure can be adjusted by using the pressure regulating valve 4.5 and the pressure gauge 4.6 to cope with different working conditions and realize the reliability and adaptability of the vibration structure 4.

[0088] The overflow valve 4.8 is electrically connected to the silencer I4.7, and the vibration cylinder 4.2 is electrically connected to the silencer II4.9, which helps to eliminate the noise generated during the gas overflow and vibration process.

[0089] The control air path of the vibration structure 4 can be controlled by a control console.

[0090] Example 2

[0091] Please see again Figure 1-Figure 3 This embodiment is described. This embodiment provides a method for retrieving dissolver residue by using the vacuum head for retrieving nuclear fuel cycle dissolver residue as described above. The specific steps are as follows:

[0092] S1: Connect the dust collector head to the residue retrieval device;

[0093] S2: Control the residue retrieval device to lower the vacuum head into the dissolver;

[0094] S3: driving the vibration structure 4 to operate and transmit the vibration to the residue to crush the residue, and at the same time opening the suction head rotating structure 2 to drive the exhaust pipe 1.4 to rotate, thereby driving the vibration structure 4 and the dust suction hose 1.5 connected to the exhaust pipe 1.4 to rotate, and the residue is sucked by the dust suction hose 1.5 and enters the residue retrieval device through the exhaust pipe 1.4;

[0095] S4: After the cleaning is completed, the vacuum head is closed and the residue retrieval device is controlled to rise.

[0096] In step S1, the residue retrieval device is a device disclosed in patent CN217061470U for long-distance retrieval of waste cladding residue in a radioactive plant.

[0097] In step S1, the dust collector head is installed on the residue retrieval device, that is, the air pump 5 is connected, and the output end of the exhaust pipe 1.4 is connected to the residue retrieval device.

[0098] In step S2, the vacuum head is installed on the residue retrieval device, and the lifting and lowering of the residue retrieval device is controlled by the control console, thereby controlling the lifting and lowering of the vacuum head.

[0099] In step S2, the two-position two-way solenoid valve 4.11 is controlled by the console to be in the right position and connected to the control air path of the baffle wall support structure 3, and the air pump 5 is controlled by the console to provide pressure to the telescopic cylinder 3.1 to push the baffle 3.2 connected to the piston rod of the telescopic cylinder 3.1 outward. When the baffle 3.2 contacts the inner wall of the dissolver, the air intake into the telescopic cylinder 3.1 is stopped. At this time, due to the friction between the baffle 3.2 and the inner wall, the dust collector head is relatively fixed on the inner wall of the dissolver and is limited inside the dissolver.

[0100] In step S3, the control console controls the two-position two-way solenoid valve 4.11 to be connected to the control air path of the vibration structure 4 in the left position. At this time, the air pump 5 provides power to the vibration cylinder 4.2, and the vibration cylinder 4.2 drives the vibration rod 4.3 to start vibrating.

[0101] In step S3, the pressure value input to the vibration cylinder 4.2 can be adjusted by adjusting the pressure regulating valve 4.5, thereby changing the vibration frequency of the vibration cylinder 4.2, so as to achieve different operations for different working conditions.

[0102] In step S3, if the gas circuit is blocked during operation, the pressure in the entire gas circuit system will continue to rise. When the pressure is greater than the pressure set by the relief valve 4.8, the relief valve 4.8 opens and the air pump 5 directly leads to the outside of the gas circuit to avoid damage to the entire system.

[0103] In step S3, if the flow rate flowing through the flow switch 4.10 is much higher than the flow rate under the rated working condition in the circuit during operation, it indicates that a leakage has occurred in the circuit of the vibrating cylinder 4.2. Since the baffle wall support structure 3 and the vibrating structure 4 share an air pump 5, if the flow rate flowing through the flow switch 4.10 is much lower than the flow rate under the rated working condition in the circuit, it indicates that a leakage has occurred in the circuit of the baffle wall support structure 3.

[0104] In step S3, if the flow switch 4.10 detects a gas circuit leak during operation, the flow switch 4.10 will generate a corresponding electrical signal to promptly connect the two-position two-way solenoid valve 4.11 to the gas circuit in the right position and close the gas source at the same time to ensure the safety and reliability of the dust collector head.

[0105] In step S4, after the cleaning work is completed, the air pump 5 is controlled by the operating table to supply air to the two telescopic cylinders 3.1. At this time, the telescopic cylinder 3.1 is subjected to pressure to retract the baffle 3.2 connected to the piston rod of the telescopic cylinder 3.1 inward, canceling the limit of the dust collector inside the dissolver.

[0106] In step S4, after the baffle 3.2 is retracted, the air pump 5 is controlled to stop supplying air to the telescopic cylinder 3.1, and at this time, the baffle wall supporting structure 3 and the vibration structure 4 stop working.

[0107] In step S4 , closing the vacuum head means closing the vacuum head rotating structure 2 , the baffle supporting wall structure 3 and the vibration structure 4 .

[0108] Example 3

[0109] Please see again Figure 1-Figure 3 This embodiment is described. This embodiment provides a method for retrieving dissolver residue by using the vacuum head for retrieving nuclear fuel cycle dissolver residue as described above. The specific steps are as follows:

[0110] S1: Before the vacuum cleaner head works, the vacuum cleaner head is connected to the residue retrieval device, that is, the air pump 5 is connected to the air inlet of the vacuum cleaner head, and the output end of the exhaust pipe 1.4 is connected to the residue retrieval device.

[0111] S2: The lifting device of the residue retrieval device is controlled by the control panel, and the entire dust collector is lowered into the dissolver until the working position. The air pump 5 is controlled by the control panel to provide pressure to the two telescopic cylinders 3.1, and the baffle 3.2 connected to the piston rod of the telescopic cylinder 3.1 is pushed outward. When the baffle 3.2 contacts the inner wall of the dissolver, the air supply to the telescopic cylinder 3.1 is stopped. At this time, due to the friction between the baffle 3.2 and the inner wall of the dissolver, the dust collector is relatively fixed on the inner wall of the dissolver.

[0112] S3: When the dust head baffle 3.2 is opened and fixed relatively to the inner wall of the dissolver, the left position of the two-position two-way solenoid valve 4.11 is connected to the control air path of the vibration structure 4 through the control console. At this time, the air pump 5 provides power to the vibration cylinder 4.2, and the vibration cylinder 4.2 drives the vibration rod 4.3 to start vibrating. The vibration rod 4.3 is in direct contact with the residue and transmits the vibration to the residue. The residue is impacted by the vibration and then crushed. When the residue has different shapes, the pressure value input to the vibration cylinder 4.2 can be adjusted by adjusting the pressure regulating valve 4.5 to change the vibration frequency of the vibration cylinder 4.2, so as to realize different operations for different working conditions. The residue is sucked out to the residue collection bucket on the surface through the dust hose 1.5 and the exhaust pipe 1.4. At the same time, the swing cylinder 2.1 is opened through the operating console, and the suction head rotating structure 2 drives the suction head to rotate to increase the cleaning area;

[0113] During operation, since the baffle wall support structure 3 and the vibration structure 4 share an air pump 5, if the flow rate flowing through the flow switch 4.10 is much higher than the flow rate under the rated working conditions in the circuit, it indicates that a leakage has occurred in the vibration cylinder circuit; if the flow rate flowing through the flow switch 4.10 is much lower than the flow rate under the rated working conditions in the circuit, it indicates that a leakage has occurred in the baffle wall support structure circuit. At this time, the flow switch 4.10 generates a corresponding electrical signal, and promptly connects the right position of the two-position two-way solenoid valve 4.11 to the air circuit, and at the same time closes the air source to ensure the safety and reliability of the dust collector head.

[0114] S4: After the cleaning work is completed, the air pump 5 is controlled by the operating table to provide pressure to the telescopic cylinder 3.1, and the telescopic cylinder 3.1 retracts the baffle 3.2 connected to the piston rod of the telescopic cylinder 3.1 inwardly. After the baffle 3.2 is retracted, the air pump 5 is controlled to stop supplying air to the telescopic cylinder 3.1, and the baffle supporting wall structure 3 and the vibration structure 4 stop working. The vacuum head is slowly brought back to the surface through the lifting device.

[0115] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver, characterized in that: include: A vacuum cleaner head main body (1), a vacuum cleaner head rotating structure (2) and a vibration structure (4); The dust collector head body (1) comprises a dust collector head shell (1.2), an exhaust pipe (1.4) and a dust collection hose (1.5); the exhaust end of the exhaust pipe (1.4) is connected to the dust collector head body (1), and the exhaust end of the dust collection hose (1.5) is connected to the suction end of the exhaust pipe (1.4); The suction head rotating structure (2) is mounted inside the suction head housing (1.2), and the vibration structure (4) is mounted on the exhaust pipe (1.4) and is used to break up residues having a cross-sectional area larger than that of the suction hose (1.5).

2. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 1, characterized in that: The suction head rotating structure (2) comprises a swing cylinder (2.1), a gear set and a fixing ring (2.4); The swing cylinder (2.1) is fixed on the dust collector housing (1.2); the gear set connects the swing cylinder (2.1) and the fixing ring (2.4); the swing cylinder (2.1) transmits the rotation output to the fixing ring (2.4) via the gear set.

3. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 2, characterized in that: The dust suction hose (1.5) and the exhaust pipe (1.4) are arranged non-concentrically; the gear set, the fixing ring (2.4) and the exhaust pipe (1.4) are connected in sequence; the swing cylinder (2.1) drives the gear set to rotate; the gear set drives the exhaust pipe (1.4) to rotate via the fixing ring (2.4), thereby driving the dust suction hose (1.5) and the vibration structure (4) to rotate.

4. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 1, characterized in that: The vibration structure (4) comprises a vibration cylinder (4.2), a vibration rod (4.3) and a spiral hose (4.4); The vibrating cylinder (4.2) is fixed on the exhaust pipe (1.4), the vibrating rod (4.3) is connected to the output end of the vibrating cylinder (4.2), the spiral hose (4.4) connects the gas source and the vibrating cylinder (4.2), and the gas is passed into the vibrating cylinder (4.2) to drive the vibrating rod (4.3) to vibrate, and an electromagnetic valve is arranged between the gas source and the vibrating cylinder (4.2).

5. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 4, characterized in that: The vibrating rod (4.3) and the dust suction hose (1.5) are parallel in the height direction.

6. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 4, characterized in that: The vibration structure (4) further comprises a vibration structure control gas circuit, wherein the vibration structure control gas circuit comprises a solenoid valve, a pressure regulating valve (4.5) and a flow switch (4.10) which are connected in sequence; The gas outlet of the gas source is connected to the electromagnetic valve, the electromagnetic valve is connected to the pressure regulating valve (4.5), the flow switch (4.10) is connected to the vibrating cylinder (4.2), and the gas output by the gas source is sequentially input into the vibrating cylinder (4.2) through the electromagnetic valve, the pressure regulating valve (4.5) and the flow switch (4.10).

7. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 4, characterized in that: The vacuum cleaner head further comprises a baffle wall supporting structure (3), wherein the baffle wall supporting structure (3) comprises a telescopic cylinder (3.1) and a baffle (3.2); The telescopic cylinder (3.1) is fixed on the dust collector housing (1.2) and is located inside the dust collector body (1); the baffle (3.2) is connected to the piston rod of the telescopic cylinder (3.1); the telescopic cylinder (3.1) operates to control the baffle (3.2) to extend out of the dust collector housing (1.2); and the solenoid valve is also connected to the air source and the telescopic cylinder (3.1).

8. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 7, characterized in that: The solenoid valve is a two-position two-way solenoid valve (4.11), and the air source is an air pump (5). The two-position two-way solenoid valve (4.11) is in the right position to connect the air pump (5) with the telescopic cylinder (3.1), and the two-position two-way solenoid valve (4.11) is in the left position to connect the air pump (5) with the vibrating cylinder (4.2), thereby controlling the air pump (5) to inlet air into the telescopic cylinder (3.1) or the vibrating cylinder (4.2).

9. A vacuum head for retrieving residue from a nuclear fuel cycle dissolver according to claim 8, characterized in that: When the flow rate flowing through the flow switch (4.10) is higher or lower than the flow rate under the rated working condition in the circuit, it is determined that the gas circuit of the telescopic cylinder (3.1) or the vibrating cylinder (4.2) is leaking, and the flow switch (4.10) generates a corresponding electrical signal, connects the two-position two-way solenoid valve (4.11) to the right position in the gas circuit, and closes the gas source at the same time.

10. A method for recovering dissolver residue by using the vacuum head for recovering nuclear fuel cycle dissolver residue as claimed in claim 1, characterized in that: The specific steps are as follows: S1: Connect the dust collector head to the residue retrieval device; S2: Control the residue retrieval device to lower the vacuum head into the dissolver; S3: driving the vibration structure (4) to operate and transmit the vibration to the residue to crush the residue, and at the same time opening the suction head rotating structure (2), driving the exhaust pipe (1.4) to rotate, thereby driving the vibration structure (4) and the dust suction hose (1.5) connected to the exhaust pipe (1.4) to rotate, and the residue is sucked by the dust suction hose (1.5) and enters the residue retrieval device through the exhaust pipe (1.4); S4: After the cleaning is completed, the vacuum head is closed and the residue retrieval device is controlled to rise.

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