CN113707350B

CN113707350B - Radioactive hot room transportation system

Info

Publication number: CN113707350B
Application number: CN202110986737.5A
Authority: CN
Inventors: 冯艳明; 王育坤; 童明炎; 章航洲; 汪海; 孙胜; 朱伟; 吴伟; 吕仙镜
Original assignee: Nuclear Power Institute of China
Current assignee: Nuclear Power Institute of China
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2024-01-23
Anticipated expiration: 2041-08-26
Also published as: CN113707350A

Abstract

The invention discloses a radioactive hot chamber transport system, which comprises a hot chamber A, a hot chamber B, a transport vehicle, a rodless cylinder, a sealing gate, a shielding mechanism and a control unit, wherein the hot chamber A is arranged on the transport vehicle; the control unit controls the rodless cylinder to drive the transport vehicle to reciprocate between the hot chamber A and the hot chamber B along the spike track; the control unit controls the opening and closing of the sealing gates; the shielding mechanism is arranged between the hot chamber A and the hot chamber B, the transport vehicle can pass through the shielding mechanism, a shielding block is arranged on the shielding mechanism, and the control unit is connected with the rodless cylinder and the sealing gate. The invention can not influence the original tightness and shielding effect of the hot chamber, is automatically controlled, and has the advantages of simple driving assembly structure, small occupied space and convenient installation and maintenance.

Description

Radioactive hot room transportation system

Technical Field

The invention relates to the technical field of transportation of radioactive materials, in particular to a radioactive hot room transportation system.

Background

The radioactive hot chamber is a special laboratory for cutting, disassembling, appearance inspection and microscopic analysis of articles irradiated by the reactor. Typically, a plurality of single heat chambers with different functions form a heat chamber group with a complete process chain. In the process of cutting, disassembling, appearance inspection and other operations on articles irradiated by a reactor, materials (including fuel assemblies) are generally required to be transferred and transported between radioactive heat chambers, and a driving device is generally used for driving a transport vehicle to reciprocate between adjacent heat chambers in the process. The existing driving device for driving the transport vehicle is complex in structure, large in occupied volume, unfavorable for installation and maintenance, and safe and reliable in the transportation process. Meanwhile, in the transportation process, the original sealing performance and shielding performance of the radioactive hot chamber are not damaged or reduced.

Disclosure of Invention

The invention aims to provide a radioactive hot room transportation system, which has the advantages of simple structure, convenient installation and maintenance, small occupied volume and meeting the requirements on sealing performance and shielding performance.

The invention is realized by the following technical scheme:

a radioactive hot chamber transport system comprises a hot chamber A, a hot chamber B, a transport vehicle, a rodless cylinder, a sealing gate, a shielding mechanism and a control unit;

the control unit controls the rodless cylinder to drive the transport vehicle to reciprocate between the hot chamber A and the hot chamber B along the spike track;

the control unit controls the opening and closing of the sealing gates;

the shielding mechanism is arranged between the hot chamber A and the hot chamber B, the transport vehicle can pass through the shielding mechanism, and a shielding block is arranged on the shielding mechanism and used for shielding radioactive substances;

the control unit is connected with the rodless cylinder and the sealing gate.

Preferably, a sliding piece is fixed on the sliding block of the rodless cylinder, one end of the sliding piece is connected with a push-pull rod, one end of the push-pull rod, which is far away from the sliding piece, is connected with a cross knot, and the cross knot is detachably connected with the transport vehicle.

Preferably, the sealing gate is a pneumatic sealing gate, and the shielding mechanism is a pneumatic shielding mechanism.

Preferably, the base plates of the hot chamber A and the hot chamber B are respectively paved with a base plate, the spike tracks and the rodless cylinders are respectively paved on the base plates, the base plates are provided with two first travel switches which are respectively positioned in the hot chamber A and the hot chamber B, and the first travel switches are connected with the control unit;

the control unit responds to the trigger signals transmitted by the first travel switches to control the rodless cylinder and the sealing gate to execute corresponding actions, and the trigger signals of the first travel switches respond to the trigger signals of the first travel switches which are generated by touching the transport vehicle;

when a first travel switch in the hot chamber B is triggered, the control unit responds to a trigger signal to control the rodless cylinder to be powered off, powered on and commutated, and the transport vehicle is driven to move into the hot chamber A;

when the first travel switch in the hot chamber A is triggered, the control unit responds to the trigger signal to control the rodless cylinder to stop working and the sealing gate to be closed.

Preferably, the sealing gate is provided with a cylinder A and a second travel switch, the cylinder A and the second travel switch are connected with a control unit, the control unit controls the opening and closing of the cylinder A and the reversing, the control unit responds to a trigger signal transmitted by the second travel switch to control the rodless cylinder to drive the transport vehicle to move into the hot chamber B, and the trigger signal of the second travel switch responds to the opening of the sealing gate to enable the second travel switch to be touched.

Preferably, the shielding mechanism comprises a connecting section and a shielding block, wherein the connecting section is fixed between the hot chamber A and the hot chamber B, the connecting section is of a hollow box-shaped structure formed by enclosing coamings, two opposite coamings of the connecting section are provided with through channels for passing through the transport vehicle, and the shielding block is arranged in the connecting section and is positioned on one side of the channels.

Preferably, the shielding mechanism further comprises a shielding compensation access door, a cylinder B, a limiting block and a rolling wheel;

the spike track and the backing plate are disconnected at the sealing gate to form a non-connected structure of the spike track and the backing plate in the hot chamber A and the hot chamber B, one end of the connecting section is fixedly connected with the shielding compensation access door, and an opening is formed in one end face of the connecting section connected with the shielding compensation access door;

the rolling wheel is fixed on the shielding block, one end of the air cylinder B is connected with the shielding block, the other end of the air cylinder B is connected with the coaming, the control unit is connected with the air cylinder B, and the control unit controls the air cylinder B to drive the shielding block to move in the connecting section, so that the shielding block is far away from the shielding compensation access door and seals the channel or moves to the shielding compensation access door to open the channel;

the limiting block is fixed on one surface of the air cylinder, which is close to the shielding compensation access door, a third travel switch is arranged in the limiting block and is connected with the control unit, the control unit responds to a trigger signal transmitted by the third travel switch to control the rodless air cylinder to drive the transport vehicle to move into the hot chamber B, and the trigger signal of the third travel switch responds to the shielding block to move to the shielding compensation access door so that the third travel switch is touched;

when a first travel switch in the hot chamber A is triggered, the control unit responds to a trigger signal transmitted by the first travel switch to control the cylinder B to drive the shielding block to move in a direction away from the shielding compensation access door and close the channel.

Preferably, the two sides of the connecting section are also provided with frame bodies communicated with the channel, the planes of the two frame plates symmetrical with the two frame bodies are flush with the plane of the bottom plate of the hot chamber and fixedly connected with the bottom plate, the aperture of a pore channel formed by the frame plates of the two frame bodies is smaller than that of the channel, one surface of the shielding block with the rolling wheel is positioned between the plane of the frame plate parallel to the shielding block and the plane of the coaming, the coaming contacted with the rolling wheel and the frame plates positioned at the two sides of the coaming form a pit-shaped structure, and the distance between adjacent vehicle shafts of the transport vehicle is larger than the length of the pit in the connecting section.

Preferably, the shielding block is also provided with a rubber strip, the pneumatic valve of the rodless cylinder adopts a three-position five-way electromagnetic reversing valve, and the pneumatic valves of the cylinder A and the cylinder B adopt two-position five-way electromagnetic reversing valves.

Preferably, the transport vechicle includes sweep, wheel, U-shaped load-bearing guide beam, connection piece, strengthening rib, axletree, and the both sides fixed connection wheel of axletree, a plurality of strengthening ribs are fixed on corresponding axletree, and the sweep is connected with each strengthening rib, and U-shaped load-bearing guide beam passes a plurality of strengthening ribs, and the notch and the spike track clearance fit of U-shaped load-bearing guide beam, connection piece are fixed on the strengthening rib that is located the transport vechicle tip, and connection piece and cross knot can dismantle fixed connection.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) According to the radioactive hot chamber transportation system provided by the embodiment of the invention, the hot chamber and the front and back of transportation can be sealed by arranging the sealing gate, so that the original sealing performance of the hot chamber is not affected; by arranging the shielding mechanism, the transport vehicle can pass through the shielding mechanism, so that the shielding effect on radioactive rays and radioactive substances is ensured when the transport vehicle passes through, and the shielding effect is not reduced; the control unit controls the rodless cylinder and the sealing gate to realize automatic control, so that manual participation is not needed, and the safety of personnel is ensured. And the rodless cylinder is adopted for driving, so that the structure of the original driving device is complex, the volume is large, and the like, and the rodless cylinder has the advantages of simple structure, light weight, small occupied space and convenience in installation and maintenance.

(2) According to the radioactive hot chamber transportation system provided by the embodiment of the invention, a structure that the transport vehicle is directly connected with the sliding block on the rodless cylinder is not adopted, but the sliding plate, the sliding rod and the cross joint are arranged, and because the transport vehicle can generate micro-rotation around the axial direction of the rodless cylinder and around the normal direction of the nail track plane due to installation and manufacturing tolerances and other reasons when moving along the nail track, if the transport vehicle is directly connected with the sliding block of the rodless cylinder, the micro-rotation can be transmitted to the sliding block, so that the sliding block is blocked, and the service life of the rodless cylinder is reduced or the operation cannot be normally performed. The push-pull rod can prevent the transport vehicle from transmitting the trace rotation around the axial direction of the rodless cylinder and the normal direction of the track plane of the bypass nail to the sliding block of the rodless cylinder, so that the rodless cylinder can be ensured to run smoothly.

(3) According to the radioactive hot room transportation system provided by the embodiment of the invention, the first travel switch is arranged on the base plate, so that a control basis is provided for the transportation process, and the control is timely carried out, so that the whole process is continuously and seamlessly connected.

(4) According to the radioactive hot room transportation system provided by the embodiment of the invention, the sealing gate adopts a pneumatic type, and the second travel switch is arranged to realize timely feedback, so that the sealing gate can be conveniently controlled automatically and timely, and the sealing performance is ensured.

(5) According to the radioactive hot room transportation system provided by the embodiment of the invention, the shielding block can move in the connecting section, so that the channel can be opened by abdication when the trolley is transported, and the channel can be closed by moving after one-time transportation is completed, and a good shielding effect is ensured after the transportation is finished. And a third travel switch is arranged to realize timely feedback and ensure shielding performance.

(6) According to the radioactive hot chamber transportation system provided by the embodiment of the invention, the frame body is arranged, the coaming plate contacted with the rolling wheels and the frame plates positioned at two sides of the coaming plate form a pit-shaped structure, so that one surface of the shielding block with the rolling wheels is positioned between the frame plate plane and the coaming plate plane which are parallel to the surface of the shielding block, a gap is not formed between the bottom plane of the shielding block and the bottom plate plane of the hot chamber, radioactive rays of the hot chamber are completely blocked without omission, and the shielding performance is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:

FIG. 1 is a top view of an embodiment of the present invention;

FIG. 2 is a front view of an embodiment of the present invention

FIG. 3 is a schematic view of a slider, push-pull rod, and cross-tie structure according to an embodiment of the present invention.

Fig. 4 is a front view of a shielding mechanism according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view taken along the direction B-B in fig. 4.

Fig. 6 is a longitudinal cross-sectional view of a shielding mechanism according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a matching structure of a connection section and a frame body according to an embodiment of the present invention.

Fig. 8 is a front view of a transporter in accordance with an embodiment of the present invention.

Fig. 9 is a side view of a transporter in accordance with an embodiment of the present invention.

Fig. 10 is a front view of a sealing shutter according to an embodiment of the present invention.

Fig. 11 is a cross-sectional view taken along the A-A plane in fig. 10.

FIG. 12 is a schematic diagram of the positional relationship between shielding blocks and shroud plates in the bottom plate and connecting section of a hot chamber according to an embodiment of the present invention.

In the drawings, the reference numerals and corresponding part names:

1-hot chamber A, 2-hot chamber B, 3-transport vehicle, 301-vehicle plate, 302-wheels, 303-U-shaped bearing guide beam, 304-connecting piece, 305-reinforcing rib, 306-axle, 4-rodless cylinder, 5-sealing gate, 501-cylinder A, 502-second travel switch, 503-door frame, 504-sliding door plate, 505-I-shaped pressing frame, 506-straight sealing strip, 507-I-shaped sealing strip, 508-adjusting screw, 6-shielding mechanism, 601-connecting section, 602-shielding block, 603-coaming, 604-shielding compensation access door, 605-cylinder B, 606-stopper, 607-frame, 608-frame plate, 610-rubber strip, 611-channel, 612-channel, 7-spike track, 8-sliding sheet, 9-push-pull rod, 10-cross junction, 11-backing plate, 12-first travel switch.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the invention.

Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

Example 1:

a radioactive hot chamber transportation system comprises a hot chamber A1, a hot chamber B2, a transportation vehicle 3, a rodless cylinder 4, a sealing gate 5, a shielding mechanism 6 and a control unit.

The heat chamber A1 and the heat chamber B2 are independently arranged with a space therebetween for placing the shielding mechanism 6. Spike tracks 7 are arranged in the hot chamber A1 and the hot chamber B2, a base plate 11 is fixedly arranged below the spike tracks 7, and the base plate 11 is fixed on the bottom plate of the base plate 11. The backing plate 11 and the spike track 7 can be integrally formed, and both ends of the backing plate and the spike track are respectively fixed in the hot chamber A1 and the hot chamber B2. The split structure may be provided, and preferably, in the present embodiment, the spike rail 7 and the shim plate 11 are both split, and each of the hot chambers A1 and B2 is provided with an individual spike rail 7 and shim plate 11, and central axes in the longitudinal directions of the spike rail 7 and shim plate 11 in the hot chambers A1 and B2 overlap.

The rodless cylinder 4 is arranged in the hot chamber A1, the rodless cylinder 4 is fixed on the base plate 11, and the rodless cylinder 4 is positioned on one side of the spike track 7 and is arranged in parallel with the spike track 7, and one end of the rodless cylinder 4 extends to the sealing gate 5 of the hot chamber A1. The rodless cylinder 4 is connected with the transport vehicle 3, a sliding piece 8 is fixed on a sliding block of the rodless cylinder 4, a sliding rod 9 can be connected with one end of the sliding piece 8 in a bolt connection mode, one end of the sliding rod 9, which is far away from the sliding piece 8, is connected with the cross joint 10, the cross joint 10 is detachably connected with the transport vehicle 3, for example, one end of the cross joint 10 can be inserted into a hole of a connecting piece 304 of the transport vehicle 3, the separation of the transport vehicle 3 and the cross joint 10 is limited through a cotter pin in the hole, and the transport vehicle 3 and the cross joint 10 can be separated through taking out the cotter pin. The control unit is electrically connected with the rodless cylinder 4, and drives the transport vehicle 3 to reciprocate between the hot chamber A1 and the hot chamber B2 along the spike track 7 by controlling the rodless cylinder 4. The end of the rodless cylinder 4, which is far away from the sealing gate 5, is also fixedly provided with a retaining block, which plays a retaining role on the sliding block on the rodless cylinder 4.

Openings are formed in one side of the heat chamber A1 and one side of the heat chamber B2, two sealing gates 5 are arranged at the openings of the heat chambers, in the embodiment, the sealing gates 5 are pneumatic sealing gates 5, and the opening and closing of the sliding door plates 504 on the pneumatic sealing gates 5 are used for opening and closing the openings of the heat chambers. The control unit controls the movement of the sliding door plate 504 by controlling the opening and closing and reversing of the cylinder a 501 on the pneumatic sealing gate 5. The control unit is electrically connected to the cylinder a 501.

The shielding mechanism 6 is disposed between the heat chambers A1 and B2, and is a pneumatic shielding mechanism 6 in this embodiment. The transport vehicle 3 can pass through the shielding mechanism 6, a channel 611 and a shielding block 602 are arranged on the shielding mechanism 6, the shielding block 602 is positioned on one side of the channel 611, the channel 611 is used for passing through the transport vehicle 3, and when the transport vehicle 3 moves from the outer space of the hot chamber A1 and the hot chamber B2, the shielding block 602 can shield radioactive substances and prevent radioactive rays from being emitted to the surrounding environment outside the hot chamber.

The base plate 11 is provided with two first travel switches 12 and is respectively positioned in the hot chamber A1 and the hot chamber B2, and each first travel switch 12 is electrically connected with the control unit.

The control unit controls the rodless cylinder 4 and the sealing gate 5 to execute corresponding actions in response to the trigger signals transmitted by the first travel switches 12, and the trigger signals of the first travel switches 12 are generated in response to the fact that the first travel switches 12 are touched by the transport vehicle 3;

when the first travel switch 12 positioned in the hot chamber B2 is triggered, the control unit responds to the trigger signal of the first travel switch 12 to control the rodless cylinder 4 to be powered off, powered on and commutated, so as to drive the transport vehicle 3 to return from the hot chamber B2 into the hot chamber A1;

when the first travel switch 12 in the hot chamber A1 is triggered, the control unit responds to the trigger signal to control the rodless cylinder 4 to stop working, the transport vehicle 3 stops moving, and the two sealing gates 5 are controlled to close and seal the openings of the hot chambers A1 and B2.

The sealing gate 5 is further provided with a second travel switch 502, the second travel switch 502 is electrically connected with the control unit, the control unit responds to a trigger signal transmitted by the second travel switch 502 to control the rodless cylinder 4 to drive the transport vehicle 3 to move from the hot chamber A1 to the hot chamber B2, and the trigger signal of the second travel switch 502 responds to the opening of the sealing gate 5 to enable the second travel switch 502 to be touched. When the material is required to be transported, the control unit controls the cylinder A501 on the sealing gate 5 to work, the sliding door plate 504 is lifted to be opened, and the second travel switch 502 is touched.

The pneumatic sealing gate 5 in the embodiment comprises a cylinder A501, a door frame 503, a sliding door plate 504, an I-shaped pressing frame 505, a straight sealing strip 506, an I-shaped sealing strip 507 and a second travel switch 502, wherein the door frame 503 of the pneumatic sealing gate 5 is welded on the openings of the side plates of the hot chamber A1 and the hot chamber B2 in a sealing manner, the cylinder A501 is fixed at the top of the door frame 503, and a piston rod of the cylinder is fixedly connected with the sliding door plate 504 through a nut. The straight sealing strip 506 is pressed in a groove at the bottom of the sliding door plate 504, the sliding door plate 504 and the I-shaped sealing strip 507 are pressed between the door frame 503 and the I-shaped pressing frame 505 through adjusting screws 508, and the straight sealing strip 506 and the I-shaped sealing strip 507 are both formed by processing radiation-resistant rubber. In particular, the sealing sluice 5 may adopt the structure of this conventional pneumatic sealing sluice 5. The control unit controls the operation of the cylinder a 501.

The transport vehicle 3 in this embodiment includes a vehicle plate 301, wheels 302, a U-shaped bearing guide beam 303, a connecting sheet 304, reinforcing ribs 305, and vehicle axles 306, wherein the wheels 302 are fixedly connected to two sides of the vehicle axles 306, a plurality of reinforcing ribs 305 are fixedly welded on one side or two sides of each vehicle axle 306 at equal intervals, and one end of each reinforcing rib 305 extends to above the vehicle axle 306 and is fixedly welded with the vehicle plate 301. The U-shaped bearing guide beam 303 passes through a plurality of reinforcing ribs 305, a through notch is formed in one end of the U-shaped bearing guide beam 303, which is far away from the vehicle plate 301, and the notch is in clearance fit with the spike on the spike rail 7, so that the U-shaped bearing guide beam 303 can move along the spike rail 7. The connecting piece 304 is fixed on a reinforcing rib 305 positioned at one end part of the transport vehicle 3, and the connecting piece 304 is detachably and fixedly connected with the cross joint 10.

Example 2:

this example is a further improvement over example 1.

The technical proposal is further as follows: the shielding mechanism 6 comprises a connecting section 601 and a shielding block 602, the connecting section 601 is fixed between the hot chamber A1 and the hot chamber B2, the connecting section 601 is of a hollow box-shaped structure formed by enclosing of enclosing plates 603, through channels 611 are formed in two opposite enclosing plates 603 of the connecting section 601 and used for passing through the transport vehicle 3, the shielding block 602 is arranged in the connecting section 601 and located on one side of the channels 611, and the shielding block 602 does not block the transport vehicle 3 when the transport vehicle 3 passes through.

The shielding mechanism 6 further comprises a shielding compensation access door 604, a cylinder B605, a limiting block 606 and a rolling wheel; the end of the connecting section 601 far away from the channel 611 is fixedly connected with the shielding compensation access door 604, and an opening is formed in one end face of the connecting section 601 connected with the shielding compensation access door 604, preferably, no coaming 603 is arranged on one end face of the connecting section 601 connected with the shielding compensation access door 604, so that the shielding block 602 can be in direct contact with the shielding compensation access door 604 when moving to the shielding compensation access door 604. The moving direction of the shielding block 602 is perpendicular to the moving direction of the carrier vehicle 3. Cylinder B605 is fixed to the cylinder mount. When the shielding compensation access door 604 is provided, the hand can be opened to enter from the shielding compensation access door 604 when the cylinder B605 needs to be replaced and maintained, the cylinder B605 is replaced and maintained, and the installation of the cylinder B605, a matched air pipe and the like also enters from the shielding compensation access door 604.

The scroll wheel is fixed to the shielding block 602, so that the shielding block 602 moves smoothly. One end of the cylinder B605 is connected to the shielding block 602, and the other end is connected to the surrounding plate 603, preferably one end of the cylinder B605 is connected to the side of the shielding block 602 provided with the rolling wheel. The control unit is electrically connected with the air cylinder B605, and controls the opening and closing of the air cylinder B605 and the annular shielding block 602 to move in the connecting section 601, so that when the transport vehicle 3 completes transportation and returns to the hot chamber A1, the shielding block 602 moves in a direction away from the shielding compensation access door 604 to close the channel 611, or when materials need to be transported and the transport vehicle 3 needs to pass through, the shielding block 602 is controlled to move in a direction of the shielding compensation access door 604 to open the channel 611 for the transport vehicle 3 to pass through. The cylinder B605 is electrically connected to a control unit, and the operation of the cylinder B605 is controlled by the control unit.

The limiting blocks 606 are fixed on one surface of the cylinder, which is close to the shielding compensation access door 604, and two limiting blocks 606 can be arranged. And a third travel switch is arranged in the limiting block 606, the third travel switch is electrically connected with a control unit, the control unit responds to a trigger signal transmitted by the third travel switch and controls the rodless cylinder 4 to drive the transport vehicle 3 to move from the hot chamber A1 to the hot chamber B2, the trigger signal of the third travel switch responds to the shielding block 602 to move to the shielding compensation access door 604 so that the limiting block 606 and the third travel switch are touched and generated, and thus, a channel 611 on the connecting section 601 is opened, and the transport vehicle 3 can pass through.

Meanwhile, when the first travel switch 12 in the hot chamber A1 is triggered, the transport vehicle 3 completes transportation and returns to the hot chamber A1 from the hot chamber B2, and when the first travel switch 12 is touched to the trigger signal, the control unit responds to the trigger signal transmitted by the first travel switch 12 to control the cylinder B605 to drive the shielding block 602 to move in a direction away from the shielding compensation access door 604 and close the channel 611, so that once transportation is completed, and the channel 611 is closed to shield radioactive rays between the hot chambers and restore to an initial state.

The two sides of the connecting section 601 are also provided with a frame body 607 communicated with the channel 611, and the frame body 607 is a structure with two open ends, which is formed by enclosing four frame plates 608 fixedly welded with the coaming 603 of the connecting section 601. The planes of the two frame plates 608 symmetrical to the two frames 607 are flush with the plane of the bottom plate of the hot chamber and fixedly connected with the bottom plate, so that the transport vehicle 3 can smoothly enter. While the aperture of the channel 612 formed by the frame plates 608 of the two frames 607 is smaller than the aperture of the channel 611 of the connecting section 601. That is, the plane of the coaming 603 at the bottom of the connecting section 601 is lower than the plane of the frame plate 608 at the bottom of the frame body 607 in horizontal height, so that the surface of the shielding block 602 with the rolling wheel is positioned between the plane of the frame plate 608 and the plane of the coaming 603 parallel to the surface of the shielding block, the coaming 603 contacted with the rolling wheel and the frame plates 608 at two sides of the coaming form a pit-shaped structure, thus the plane of the bottom of the shielding block 602 is lower than the plane of the bottom plate of the hot chamber, no gap exists between the plane of the bottom of the shielding block 602 and the plane of the bottom plate of the hot chamber, and the radioactive rays of the hot chamber are completely blocked without omission. Meanwhile, the distance between the axles 306 of the transport vehicle 3 is larger than the length of the pit inside the connecting section 601, so that the trolley can smoothly drive through the pit.

In this embodiment, the pneumatic valve of the rodless cylinder 4 adopts a three-position five-way electromagnetic reversing valve, and the pneumatic valves of the cylinders a 501 and B605 adopt two-position five-way electromagnetic reversing valves.

The specific process for realizing radioactive material transportation in the embodiment is as follows:

in the initial state, the transport vehicle 3 is parked in the hot chamber A1, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 works in the middle position, the two-position five-way electromagnetic valves corresponding to the two sealing gates 5 are all in the power-off state and work in the right position, the sealing gates 5 slide the door plate 504 to fall under the action of the cylinder B605, and the sealing gates 5 are in the closed state. The two-position five-way electromagnetic valve of the cylinder B605 on the shielding mechanism 6 is in a power-off state and works in a right position, the shielding block 602 is pushed to the side far away from the shielding compensation access door 604 under the action of the cylinder B605, the channel 611 is closed, and at the moment, the two radioactive hot chambers are in a sealed and shielding state.

When materials need to be transferred and transported between the hot chamber A1 and the hot chamber B2, the control unit electrifies the two-position five-way electromagnetic reversing valves of the air cylinder A501 and the air cylinder B on the two sides, the two-position five-way electromagnetic reversing valves of the air cylinder A501 and the air cylinder B are switched to the left, the piston rod of the air cylinder A501 of the air seal gate 5 and the piston rod of the air cylinder B605 of the air seal shielding mechanism 6 are pushed back, the sliding door plate 504 is lifted, the seal gate 5 is opened, and the shielding block 602 is pushed back to one side of the shielding compensation access door 604. At this time, the second travel switch 502 and the third travel switch are touched to generate a trigger signal and transmit the trigger signal to the control unit, the control unit obtains the signal and then electrifies the left coil of the three-position five-way electromagnetic reversing valve of the rodless cylinder 4, at this time, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 works in the left position, and the transport vehicle 3 moves to the hot chamber B2 under the drive of the rodless cylinder 4 until the first travel switch 12 in the hot chamber B2 is triggered. After the control unit obtains a trigger signal of the travel switch in the hot chamber B2, the three-position five-way electromagnetic reversing valve of the control rodless cylinder 4 is powered off, at the moment, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 works in the middle position, and the control unit controls the rodless cylinder 4 to keep power off for a certain time so as to load and unload materials. After the completion, the control unit controls the right coil of the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 to be electrified, at the moment, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 works at the right position, and the transport vehicle 3 returns to the hot chamber A1 under the drive of the rodless cylinder 4 until the first travel switch 12 in the hot chamber A1 is triggered. After the control unit obtains the trigger signal of the first travel switch 12 in the hot chamber A1, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4, the two-position five-way electromagnetic reversing valve of the cylinder A501 and the two-position five-way electromagnetic reversing valve of the cylinder B605 are controlled to be powered off simultaneously. At this time, the three-position five-way electromagnetic reversing valve of the rodless cylinder 4 works in the middle position, the rodless cylinder 4 does not act, the transport vehicle 3 is stationary in the hot chamber A1, the two-position five-way electromagnetic reversing valve of the pneumatic sealing gate 5 and the two-position five-way electromagnetic reversing valve of the pneumatic shielding mechanism 6 work in the right position, the piston rods of the cylinder A501 and the cylinder B605 are pushed out, the pneumatic sealing gate 5 is closed, the channel 611 of the connecting section 601 is closed, the pneumatic shielding mechanism 6 is closed, the material transportation is completed, the system returns to the initial state and waits for the next transportation.

Those of ordinary skill in the art will appreciate that implementing all or part of the above facts and methods may be accomplished by a program to instruct related hardware, the program involved or the program may be stored in a computer readable storage medium, the program when executed comprising the steps of: the corresponding method steps are introduced at this time, and the storage medium may be a ROM/RAM, a magnetic disk, an optical disk, or the like.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The radioactive hot chamber transportation system is characterized by comprising a hot chamber A (1), a hot chamber B (2), a transportation vehicle (3), a rodless cylinder (4), a sealing gate (5), a shielding mechanism (6) and a control unit;

the hot chamber A (1) and the hot chamber B (2) are internally provided with spike tracks (7), the rodless cylinder (4) is arranged in the hot chamber A (1), the rodless cylinder (4) is connected with the transport vehicle (3), the rodless cylinder (4) is positioned at one side of the spike tracks (7) and is arranged in parallel with the spike tracks (7), and the control unit controls the rodless cylinder (4) to drive the transport vehicle (3) to reciprocate between the hot chamber A (1) and the hot chamber B (2) along the spike tracks (7);

the sealing gate (5) is arranged at the openings of the heat chamber A (1) and the heat chamber B (2) and seals the openings of the heat chamber A (1) and the heat chamber B (2), and the control unit controls the opening and closing of the sealing gate (5);

the shielding mechanism (6) is arranged between the hot chamber A (1) and the hot chamber B (2), the transport vehicle (3) can pass through the shielding mechanism (6), and a shielding block (602) is arranged on the shielding mechanism (6) and used for shielding radioactive substances;

the control unit is connected with the rodless cylinder (4) and the sealing gate (5);

the sealing gate (5) comprises a cylinder A (501), a door frame (503), a sliding door plate (504), an I-shaped compression frame (505), a straight sealing strip (506), an I-shaped sealing strip (507) and a second travel switch (502), wherein the door frame (503) is welded on the openings of the side plates of the hot chamber A (1) and the hot chamber B (2) in a sealing way, the cylinder A (501) is fixed at the top of the door frame (503), a piston rod of the cylinder is fixedly connected with the sliding door plate (504) through a nut, the straight sealing strip (506) is compressed in a groove at the bottom of the sliding door plate (504), and the sliding door plate (504) and the I-shaped sealing strip (507) are compressed between the door frame (503) and the I-shaped compression frame (505) through adjusting screws (508);

the opening of the hot chamber is opened and closed by opening and closing the sliding door plate (504);

the control unit controls the movement of the sliding door plate (504) by controlling the opening and closing and reversing of the air cylinder A (501);

the shielding mechanism (6) comprises a connecting section (601), a shielding block (602), a shielding compensation access door (604), a cylinder B (605), a limiting block (606) and a rolling wheel; the connecting section (601) is fixed between the hot chamber A (1) and the hot chamber B (2), the connecting section (601) is of a hollow box-shaped structure formed by enclosing surrounding plates (603), two opposite surrounding plates (603) are provided with through channels (611), and the shielding blocks (602) are arranged in the connecting section (601) and are positioned on one side of the channels (611);

one end of the connecting section (601) far away from the channel (611) is fixedly connected with a shielding compensation access door (604), the rolling wheel is fixed on the shielding block (602), the limiting block (606) is fixed on one surface of the cylinder close to the shielding compensation access door (604), a third travel switch is arranged in the limiting block (606), and the third travel switch is electrically connected with the control unit;

the control unit responds to a trigger signal transmitted by the third travel switch, the rodless cylinder (4) is controlled to drive the transport vehicle (3) to move from the hot chamber A (1) to the hot chamber B (2), the trigger signal of the third travel switch responds to the shielding block (602) to move to the shielding compensation access door (604) so that the limiting block (606) and the third travel switch are touched to be generated, and a channel (611) on the connecting section (601) is opened to allow the transport vehicle (3) to pass through.

2. The radioactive hot room transport system according to claim 1, characterized in that a sliding piece (8) is fixed on the sliding block of the rodless cylinder (4), one end of the sliding piece (8) is connected with a push-pull rod (9), one end of the push-pull rod (9) far away from the sliding piece (8) is connected with a cross knot (10), and the cross knot (10) is detachably connected with the transport vehicle (3).

3. The radioactive hot room transport system according to claim 1, characterized in that the sealing sluice (5) is a pneumatic sealing sluice and the shielding mechanism (6) is a pneumatic shielding mechanism.

4. The radioactive hot room transport system according to claim 1, characterized in that a base plate of the hot room a (1) and a base plate of the hot room B (2) are respectively paved with a base plate (11), a spike rail (7) and a rodless cylinder (4) are respectively paved on the base plate (11), two first travel switches (12) are arranged on the base plate (11) and are respectively positioned in the hot room a (1) and the hot room B (2), and each first travel switch (12) is connected with a control unit;

the control unit responds to the trigger signals transmitted by the first travel switches (12) to control the rodless cylinder (4) and the sealing gate (5) to execute corresponding actions, and the trigger signals of the first travel switches (12) respond to the trigger signals of the first travel switches (12) which are generated by touching the transport vehicle (3);

when a first travel switch (12) positioned in the hot chamber B (2) is triggered, the control unit responds to a trigger signal to control the rodless cylinder (4) to be powered off, powered on and commutated, and the transport vehicle (3) is driven to move into the hot chamber A (1);

when a first travel switch (12) in the hot chamber A (1) is triggered, the control unit responds to a trigger signal to control the rodless cylinder (4) to stop working, and the sealing gate (5) is closed.

5. The radioactive hot room transport system according to claim 1, wherein the sealing gate (5) is provided with a cylinder a (501) and a second travel switch (502), the cylinder a (501) and the second travel switch (502) are connected with a control unit, the control unit controls the opening and closing and reversing of the cylinder a (501), the control unit controls the rodless cylinder (4) to drive the transport vehicle (3) to move into the hot room B (2) in response to a trigger signal transmitted by the second travel switch (502), and the trigger signal of the second travel switch (502) is started in response to the sealing gate (5) to enable the second travel switch (502) to be touched.

6. The radioactive hot room transport system according to claim 4, characterized in that the shielding mechanism (6) comprises a connecting section (601) and a shielding block (602), the connecting section (601) is fixed between the hot room a (1) and the hot room B (2), the connecting section (601) is a hollow box-shaped structure surrounded by enclosing plates (603), two opposite enclosing plates (603) of the connecting section (601) are provided with through channels (611) for passing through the transport vehicle (3), and the shielding block (602) is arranged inside the connecting section (601) and is located at one side of the channels (611).

7. The radiant heat chamber transport system of claim 6, wherein the shielding mechanism (6) further comprises a shielding compensation access door (604), a cylinder B (605), a stopper (606), a rolling wheel;

the spike track (7) and the backing plate (11) are disconnected at the sealing gate (5) to form a non-connected structure of the spike track (7) and the backing plate (11) in the hot chamber A (1) and the hot chamber B (2), one end of the connecting section (601) is fixedly connected with the shielding compensation access door (604), and an opening is formed in one end face of the connecting section (601) connected with the shielding compensation access door (604);

the rolling wheel is fixed on the shielding block (602), one end of the air cylinder B (605) is connected with the shielding block (602), the other end of the air cylinder B (605) is connected with the coaming (603), the control unit is connected with the air cylinder B (605), and the control unit controls the air cylinder B (605) to drive the shielding block (602) to move in the connecting section (601), so that the shielding block (602) is far away from the shielding compensation access door (604) and closes the channel (611) or moves to the shielding compensation access door (604) to open the channel (611);

the limiting block (606) is fixed on one surface of the air cylinder close to the shielding compensation access door (604), a third travel switch is arranged in the limiting block (606), the third travel switch is connected with the control unit, the control unit responds to a trigger signal transmitted by the third travel switch to control the rodless air cylinder (4) to drive the transport vehicle (3) to move into the hot chamber B (2), and the trigger signal of the third travel switch responds to the shielding block (602) to move to the shielding compensation access door (604) to enable the third travel switch to be touched;

when a first travel switch (12) located in the hot chamber A (1) is triggered, the control unit responds to a trigger signal transmitted by the first travel switch (12) to control the cylinder B (605) to drive the shielding block (602) to move in a direction away from the shielding compensation access door (604) and close the channel (611).

8. The transport system of a radioactive hot room according to claim 7, characterized in that the two sides of the connecting section (601) are also provided with frame bodies (607) which are communicated with the channels (611), the planes of the two frame bodies (607) which are symmetrical are flush with the plane of the bottom plate of the hot room and fixedly connected with the bottom plate, the aperture of the pore channel (612) formed by the frame plates (608) of the two frame bodies (607) is smaller than the aperture of the channels (611), the side of the shielding block (602) with the rolling wheel is positioned between the plane of the frame plate (608) and the plane of the coaming (603) which are parallel to the same, the coaming (603) which is contacted with the rolling wheel and the frame plates (608) which are positioned at the two sides of the same form a pit-shaped structure, and the distance between the adjacent axles (306) of the transport vehicle (3) is larger than the length of the pits in the connecting section (601).

9. The radioactive hot room transport system according to claim 7, wherein the shielding block (602) is further provided with a rubber strip (610), the pneumatic valve of the rodless cylinder (4) is a three-position five-way electromagnetic reversing valve, and the pneumatic valves of the cylinder a (501) and the cylinder B (605) are two-position five-way electromagnetic reversing valves.

10. The radioactive hot room transport system according to claim 2, characterized in that the transport vehicle (3) comprises a vehicle plate (301), wheels (302), U-shaped bearing guide beams (303), connecting pieces (304), reinforcing ribs (305) and axles (306), wherein the wheels (302) are fixedly connected to both sides of the axles (306), the plurality of reinforcing ribs (305) are fixed to the corresponding axles (306), the vehicle plate (301) is connected with each reinforcing rib (305), the U-shaped bearing guide beams (303) penetrate through the plurality of reinforcing ribs (305), the notches of the U-shaped bearing guide beams (303) are in clearance fit with spike tracks (7), the connecting pieces (304) are fixed to the reinforcing ribs (305) at the end parts of the transport vehicle (3), and the connecting pieces (304) are detachably and fixedly connected with the cross knots (10).