CN113707350A

CN113707350A - Radioactive heat chamber transportation system

Info

Publication number: CN113707350A
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: 2021-11-26
Anticipated expiration: 2041-08-26
Also published as: CN113707350B

Abstract

The invention discloses a radioactive heat chamber transportation system, which comprises a heat chamber A, a heat chamber B, a transport vehicle, a rodless cylinder, a sealing gate, a shielding mechanism and a control unit, wherein the heat chamber A is connected with the heat chamber B; the hot chamber A and the hot chamber B are respectively provided with a spike rail, the rodless cylinder is arranged in the hot chamber A and is connected with the transport vehicle, the rodless cylinder is positioned on one side of the spike rail and is arranged in parallel with the spike rail, and 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 rail; the sealing gates are arranged at the openings of the hot chamber A and the hot chamber B and seal the openings of the hot chamber A and the hot chamber B, and 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, the shielding mechanism is provided with a shielding block, and the control unit is connected with the rodless cylinder and the sealing gate. The invention can not affect the original sealing and shielding effect of the hot chamber, is automatically controlled, and has simple structure of the driving component, small occupied space and convenient installation and maintenance.

Description

Radioactive heat chamber transportation system

Technical Field

The invention relates to the technical field of radioactive material transportation, 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 the objects irradiated by the reactor. Typically, a group of hot cells with a complete process chain is made up of a plurality of single hot cells of different functions. During the operation of cutting, disassembling, inspecting appearance and the like of the objects irradiated by the reactor, the materials (including fuel assemblies) are generally required to be transferred and transported between the radioactive hot chambers, and a driving device is generally used for driving a transport vehicle to reciprocate between the adjacent hot chambers. The existing driving device for driving the transport vehicle is complex in structure, large in occupied volume, not beneficial to installation and maintenance, and affects the safety and reliability of the transport process. There is also a need to ensure that the original sealing and shielding properties of the radioactive hot cell are not destroyed or reduced during transport.

Disclosure of Invention

The technical problem to be solved by the invention is that the driving device on the existing radioactive heat indoor transportation device has a complex structure, occupies a large volume, is not beneficial to installation and maintenance, and cannot meet the requirements of sealing performance and shielding performance in the transportation process.

The invention is realized by the following technical scheme:

a radioactive hot chamber transportation 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 hot chamber A and the hot chamber B are respectively provided with a spike rail, the rodless cylinder is arranged in the hot chamber A and is connected with the transport vehicle, the rodless cylinder is positioned on one side of the spike rail and is arranged in parallel with the spike rail, and 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 rail;

the sealing gates are arranged at the openings of the hot chamber A and the hot chamber B and seal the openings of the hot chamber A and the hot chamber B, and 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 the shielding mechanism is provided with shielding blocks for shielding radioactive substances;

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

Preferably, a sliding sheet is fixed on a sliding block of the rodless cylinder, one end of the sliding sheet is connected with a push-pull rod, one end of the push-pull rod, which is far away from the sliding sheet, 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 bottom plates of the hot chamber A and the hot chamber B are respectively paved with a base plate, the spike rail and the rodless cylinder 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 each first travel switch is 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 are generated in response to the fact that the first travel switches are touched by the transport vehicle;

when a first travel switch positioned 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 reversed, and drives the transport vehicle to move into the hot chamber A;

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

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

Preferably, the shielding mechanism comprises a connecting section and a shielding block, the connecting section is fixed between the hot chamber A and the hot chamber B, the connecting section is a hollow box-shaped structure formed by enclosing surrounding boards, two opposite surrounding boards of the connecting section are provided with through channels for passing through a transport vehicle, and the shielding block is arranged in the connecting section and located 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, which is connected with the shielding compensation access door;

the rolling wheel is fixed on the shielding block, one end of the cylinder B is connected with the shielding block, the other end of the cylinder B is connected with the enclosing plate, the control unit is connected with the cylinder B, and the control unit controls the 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 towards the shielding compensation access door to open the channel;

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

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

Preferably, frame bodies communicated with the channel are further arranged on two sides of the connecting section, the planes of two frame plates symmetrical to each other of 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 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 located between the plane of the frame plate parallel to the shielding block and the plane of the coaming, the coaming in contact with the rolling wheel and the frame plates located on two sides of the coaming form a pit-shaped structure, and the distance between adjacent axles of the transport vehicle is greater than the length of a pit in the connecting section.

Preferably, the shielding block is further provided with a rubber strip, the pneumatic valves of the rodless cylinder adopt three-position five-way electromagnetic reversing valves, 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 bears 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 bears guide beam and passes a plurality of strengthening ribs, and U-shaped bears guide beam's notch and spike track clearance fit, and the connection piece is fixed on the strengthening rib that is located the transport vechicle tip, and fixed connection can be dismantled with the cross to the connection piece.

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

(1) according to the radioactive heat chamber transportation system provided by the embodiment of the invention, the heat chamber and the transportation front and back can be sealed by arranging the sealing gate, so that the original sealing property of the heat chamber is not influenced; 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 the shielding mechanism, and the shielding effect is not reduced; and the rodless cylinder and the sealing gate are controlled by the control unit, so that automatic control is realized, manual participation is not needed, and the personnel safety is guaranteed. And the rodless cylinder is adopted for driving, the structure of the original driving device is replaced by the rodless cylinder, the structure is complex, the size is large, and the like, and the rodless cylinder is simple in structure, light in weight, small in occupied space and convenient to install and maintain.

(2) According to the radioactive heat chamber transportation system provided by the embodiment of the invention, a structure that the transportation vehicle is directly connected with the sliding block on the rodless cylinder is not adopted, but the sliding plate, the push-pull rod and the cross knot are arranged, so that micro-rotation around the axial direction of the rodless cylinder and the plane normal direction of the track pin track can be generated due to installation, manufacturing tolerance and the like when the transportation vehicle moves along the track pin track, and if the transportation 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 clamped, the service life of the rodless cylinder is shortened, or the rodless cylinder cannot normally work. The push-pull rod can block the transport vehicle from transmitting micro-rotation around the axial direction of the rodless cylinder and the normal direction of the track plane of the track nail to the sliding block of the rodless cylinder, and smooth operation of the rodless cylinder is ensured.

(3) According to the radioactive hot chamber 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 a transportation process, control is performed in time, and the whole process is continuously and seamlessly butted.

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

(5) According to the radioactive heat chamber 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 abdicating during trolley transportation, and closed by moving after one-time transportation is finished, and a good shielding effect is ensured after the transportation is finished. And a third travel switch is arranged, so that timely feedback is realized, and the shielding performance is ensured.

(6) According to the radioactive hot chamber transportation system provided by the embodiment of the invention, the frame body is arranged, the enclosing plate in contact with the rolling wheels and the frame plates positioned on two sides of the enclosing plate form a pit-shaped structure, and the surface of the shielding block with the rolling wheels is positioned between the plane of the frame plate and the plane of the enclosing plate which are parallel to the surface of the shielding block, so that a gap is not formed between the bottom plane of the shielding block and the plane of the bottom plate 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 required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. 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 structural diagram of a sliding plate, a push-pull rod and a cross-shaped knot according to an embodiment of the invention.

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

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

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

Fig. 7 is a schematic view of a fitting structure of the connecting section and the frame body according to the embodiment of the present invention.

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

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

FIG. 10 is a front view of a sealing gate according to an embodiment of the present invention.

Fig. 11 is a cross-sectional view taken along plane a-a of fig. 10.

Fig. 12 is a schematic diagram of the location relationship between the shielding block and the bottom plate and the inner surrounding plate of the connecting section of the hot chamber according to the embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-hot chamber A, 2-hot chamber B, 3-transport vehicle, 301-vehicle plate, 302-wheel, 303-U-shaped bearing guide beam, 304-connecting sheet, 305-reinforcing rib, 306-vehicle shaft, 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 plate, 604-shielding compensation access door, 605-cylinder B, 606-limiting block, 607-frame body, 608-frame plate, 610-rubber strip, 611-channel, 612-pore channel, 7-spike rail, 8-sliding sheet, 9-push-pull rod, 10-cross knot, 11-backing plate and 12-first travel switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit 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: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "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. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" 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", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, 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 transport vehicle 3, a rodless cylinder 4, a sealing gate 5, a shielding mechanism 6 and a control unit.

The hot chamber A1 and the hot chamber B2 are independently arranged, and a space is reserved between the hot chamber A1 and the hot chamber B2 for placing the shielding mechanism 6. Spike tracks 7 are arranged in the hot chamber A1 and the hot chamber B2, a backing plate 11 is fixedly arranged below the spike tracks 7, and the backing plate 11 is fixed on a bottom plate of the backing plate 11. The backing plate 11 and the spike rail 7 may be formed as an integral structure, and both ends thereof are fixed in the hot chamber A1 and the hot chamber B2, respectively. It is also possible to provide a broken structure, and preferably in this embodiment, the spike rail 7 and the shim plate 11 are both provided in a broken structure, and a separate spike rail 7 and shim plate 11 are provided in each of the hot chambers A1 and B2, and the longitudinal central axes of the spike rails 7 and shim plates 11 in the hot chambers A1 and B2 coincide with each other.

The rodless cylinder 4 is arranged in the hot chamber A1, the rodless cylinder 4 is fixed on the backing plate 11, the rodless cylinder 4 is located on one side of the spike rail 7 and is parallel to the spike rail 7, and one end of the rodless cylinder 4 extends to the position of the sealing gate 5 of the hot chamber A1. The rodless cylinder 4 is connected with the transport vehicle 3, a sliding sheet 8 is fixed on a sliding block of the rodless cylinder 4, a bolt connection mode can be adopted, one end of the sliding sheet 8 is connected with a push-pull rod 9, one end, far away from the sliding sheet 8, of the push-pull rod 9 is connected with a cross knot 10, the cross knot 10 is detachably connected with the transport vehicle 3, for example, one end of the cross knot 10 can be inserted into a hole of a connecting sheet 304 of the transport vehicle 3, the separation of the transport vehicle 3 and the cross knot 10 is limited through a split pin in the hole, and the transport vehicle 3 can be separated from the cross knot 10 by taking out the split 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 rail 7 by controlling the rodless cylinder 4. And a blocking block is also fixedly arranged at one end of the rodless cylinder 4 far away from the sealing gate 5, and the blocking block plays a role in blocking a sliding block on the rodless cylinder 4.

The opening has all been seted up to one side of hot chamber A1, hot chamber B2, and two sealed gates 5 set up the opening part of each hot chamber, and in this embodiment, sealed gate 5 is the sealed gate of pneumatic type 5, plays opening, the closure to the opening of hot chamber through opening and shutting of the sealed gate door plant 504 of pneumatic type on 5. The control unit controls the movement of the sliding door panel 504 by controlling the opening and closing and reversing of the cylinder A501 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 hot chambers A1 and B2, and is configured as a pneumatic shielding mechanism 6 in this embodiment. The transport vehicle 3 can pass through the shielding mechanism 6, the shielding mechanism 6 is provided with a passage 611 and a shielding block 602, the shielding block 602 is located at one side of the passage 611, the passage 611 is used for passing through the transport vehicle 3, and when the transport vehicle 3 moves from the external space of the hot chamber A1 and the hot chamber B2, the shielding block 602 can shield the radioactive substance from the radiation to the surrounding environment outside the hot chamber.

Two first travel switches 12 are arranged on the base plate 11 and are respectively located 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 perform 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 first travel switches 12 being touched by the transport vehicle 3;

when a first travel switch 12 in the hot chamber B2 is triggered, the control unit responds to a trigger signal of the first travel switch 12, controls the rodless cylinder 4 to be powered off, powered on and reversed, and drives the transport vehicle 3 to return from the hot chamber B2 to the hot chamber A1;

when the first travel switch 12 in the hot chamber A1 is triggered, the control unit controls the rodless cylinder 4 to stop working in response to the trigger signal, the transport vehicle 3 stops moving, and the two sealing gates 5 are controlled to close and seal the openings of the hot chamber A1 and the hot chamber 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 controls the rodless cylinder 4 to drive the transport vehicle 3 to move from the hot chamber A1 to the hot chamber B2 in response to a trigger signal transmitted by the second travel switch 502, and the trigger signal of the second travel switch 502 is generated by touching the second travel switch 502 in response to the opening of the sealing gate 5. When the materials need to be transported, the control unit controls the air cylinder A501 on the sealing gate 5 to work, the sliding door panel 504 ascends and is opened, and the second travel switch 502 is touched.

The pneumatic sealing gate 5 in this embodiment includes an air cylinder a 501, a door frame 503, a sliding door panel 504, an i-shaped pressing frame 505, a straight sealing strip 506, an i-shaped sealing strip 507, and a second travel switch 502, the door frame 503 of the pneumatic sealing gate 5 is welded to the openings of the side plates of the hot chamber A1 and the hot chamber B2 in a sealing manner, the air cylinder a 501 is fixed to the top of the door frame 503, and the piston rod of the air cylinder is fixedly connected to the sliding door panel 504 through a nut. The straight sealing strip 506 is pressed in a groove at the bottom of the sliding door panel 504, the sliding door panel 504 and the I-shaped sealing strip 507 are pressed between the door frame 503 and the I-shaped pressing frame 505 through the adjusting screw 508, and the straight sealing strip 506 and the I-shaped sealing strip 507 are both processed by radiation-resistant rubber. In particular, the sealing gate 5 may be of the conventional pneumatic sealing gate 5 construction. 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 load-bearing guide beam 303, a connecting piece 304, reinforcing ribs 305, and axles 306, the wheels 302 are fixedly connected to both sides of the axles 306, the plurality of reinforcing ribs 305 are fixedly welded to one side or both sides of each axle 306 at equal intervals, and one end of each reinforcing rib 305 extends to above the axle 306 and is fixedly welded to the vehicle plate 301. The U-shaped load-bearing guide beam 303 passes through the plurality of reinforcing ribs 305, a through notch is formed in one end, far away from the vehicle plate 301, of the U-shaped load-bearing guide beam 303, and the notch is in clearance fit with the spikes on the spike rail 7, so that the U-shaped load-bearing guide beam 303 can move along the spike rail 7. The connecting piece 304 is fixed to a reinforcing rib 305 at one end of the carriage 3, and the connecting piece 304 is detachably and fixedly connected to the cross 10.

Example 2:

the present embodiment is a further improvement on the basis of embodiment 1.

The further technical scheme is as follows: shielding mechanism 6 includes linkage segment 601, shielding piece 602, linkage segment 601 is fixed between hot room A1, the hot room B2, linkage segment 601 is the cavity box form structure that is enclosed by bounding wall 603 and forms, be equipped with on two relative bounding walls 603 of linkage segment 601 and run through passageway 611 and be used for passing through transport vechicle 3, shielding piece 602 sets up the inside of linkage segment 601 and be located one side of passageway 611, shielding piece 602 can not block transport vechicle 3 when making transport vechicle 3 pass through.

The shielding mechanism 6 further comprises a shielding compensation access door 604, a cylinder B605, a limiting block 606 and rolling wheels; one end of the connecting section 601 far from the channel 611 is fixedly connected with the shielding compensation access door 604, and an end face of the connecting section 601 connected with the shielding compensation access door 604 is provided with an opening, preferably, a surrounding plate 603 is not arranged on the end face of the connecting section 601 connected with the shielding compensation access door 604, so that the shielding block 602 can be directly contacted with the shielding compensation access door 604 when moving to the shielding compensation access door 604. The direction of movement of the shielding block 602 is perpendicular to the direction of movement of the carriage 3. The cylinder B605 is fixed to the cylinder mount. Set up shielding compensation access door 604, when needing to change, maintain cylinder B605, can open the hand and go into from shielding compensation access door 604, change, maintain cylinder B605, and the installation of cylinder B605 and supporting trachea etc. also goes into from shielding compensation access door 604.

The roller is fixed to the shielding block 602 to facilitate the movement of the shielding block 602. One end of the cylinder B605 is connected to the shielding block 602, and the other end is connected to the enclosure 603, and preferably one end of the cylinder B605 is connected to the side of the shielding block 602 provided with the rolling wheels. The control unit is electrically connected with the cylinder B605, the control unit controls the opening and closing of the cylinder B605 and drives the shielding block 602 to move in the connecting section 601 annularly, so that after the transport vehicle 3 finishes transport and returns to the hot chamber A1, the shielding block 602 moves towards the direction far 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 control unit controls the shielding block 602 to move towards 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 the control unit, and the control unit controls the operation of the cylinder B605.

The limiting blocks 606 are fixed on one side of the cylinder close to the shielding compensation access door 604, and two limiting blocks 606 can be arranged. And a third stroke switch is arranged in the limiting block 606 and electrically connected with a control unit, the control unit responds to a trigger signal transmitted by the third stroke switch to control 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 stroke switch responds to the shielding block 602 moving to the shielding compensation access door 604 to enable the limiting block 606 and the third stroke switch to be touched and generated, and therefore the 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 from the hot chamber B2 to the hot chamber A1, the first travel switch 12 is touched with a trigger signal, and the control unit controls 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 in response to the trigger signal transmitted by the first travel switch 12, so that one transportation is completed, and the closed channel 611 shields radioactive rays between the hot chambers and returns to an initial state.

Two sides of the connecting section 601 are further provided with frame bodies 607 communicated with the channel 611, and the frame bodies 607 are structures with two open ends and surrounded by four frame plates 608 fixedly welded with the coamings 603 of the connecting section 601. The planes of two frame plates 608, which are symmetrical to each other, of the two frame bodies 607 are flush with the plane of the bottom plate of the hot chamber and are fixedly connected with the bottom plate, so that the transport vehicle 3 can smoothly enter. Meanwhile, the aperture of the channel 612 formed by the frame plates 608 of the two frame bodies 607 is smaller than that of the channel 611 of the connecting section 601. That is, the plane of the surrounding plate 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 607 in the horizontal height, so that the side of the shielding block 602 with the rolling wheel is positioned between the plane of the frame plate 608 parallel to the plane of the surrounding plate 603, and the surrounding plate 603 in contact with the rolling wheel and the frame plates 608 at the two sides form a pit-shaped structure, so that 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 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 in the connecting section 601, so that the trolley can smoothly drive through the pit.

In the present embodiment, the pneumatic valves of the rodless cylinder 4 are three-position five-way solenoid directional valves, and the pneumatic valves of the cylinders a 501 and B605 are two-position five-way solenoid directional valves.

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

in an initial state, the transport vehicle 3 stops in the hot chamber A1, the three-position five-way electromagnetic directional valve of the rodless cylinder 4 works in a neutral position, the two-position five-way electromagnetic valves corresponding to the two sealing gates 5 both work in a power-off state in a right position, the sealing gates 5 fall down under the action of the cylinder B605, and the sealing gates 5 are in a closed state. The two-position five-way electromagnetic valve of the cylinder B605 on the shielding mechanism 6 works in a power-off state at the 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 heat 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 controls the two-position five-way electromagnetic directional valves of the air cylinder A501 and the pneumatic B on two sides to be electrified, the two-position five-way electromagnetic directional valves of the air cylinder A501 and the pneumatic B are switched to the left position, the piston rods of the air cylinder A501 of the pneumatic sealing gate 5 and the air cylinder B605 of the pneumatic shielding mechanism 6 are pushed back, the sliding door plate 504 is lifted, the sealing 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 receives the signal and then energizes the left coil of the three-position five-way electromagnetic directional valve for controlling the rodless cylinder 4, the three-position five-way electromagnetic directional valve for controlling the rodless cylinder 4 works at the left position, and the transport vehicle 3 moves to the hot chamber B2 under the driving 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 a travel switch in the hot chamber B2, the three-position five-way electromagnetic reversing valve for controlling the rodless cylinder 4 is powered off, the three-position five-way electromagnetic reversing valve for controlling the rodless cylinder 4 works in a middle position, and the control unit controls the rodless cylinder 4 to be powered off for a certain time to load and unload materials. After the operation is finished, 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 driving 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 directional valve of the rodless cylinder 4, the two-position five-way electromagnetic directional valve of the cylinder A501 and the two-position five-way electromagnetic directional valve of the cylinder B605 are controlled to be powered off simultaneously. At the moment, the three-position five-way electromagnetic directional valve of the rodless cylinder 4 works in the middle position, the rodless cylinder 4 does not act, the transport vehicle 3 is still in the hot chamber A1, the two-position five-way electromagnetic directional valve of the pneumatic sealing gate 5 and the two-position five-way electromagnetic directional valve of the pneumatic shielding mechanism 6 work in the right position, 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 sealed, the pneumatic shielding mechanism 6 is closed, material transportation is completed, the system returns to the initial state, and the next transportation is waited.

It will be understood by those skilled in the art that all or part of the steps of the above facts and methods can be implemented by hardware related to instructions of a program, and the related program or the program can be stored in a computer readable storage medium, and when executed, the program includes the following steps: corresponding method steps are introduced here, and the storage medium may be a ROM/RAM, a magnetic disk, an optical disk, etc.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

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

spike tracks (7) are arranged in the hot chamber A (1) and the hot chamber B (2), 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 on 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 opening of the hot chamber A (1) and the hot chamber B (2) and seals the opening of the hot chamber A (1) and the opening of the hot 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 the shielding mechanism (6) is provided with a shielding block (602) for shielding radioactive substances;

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

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

3. A radioactive hot chamber transport system according to claim 1, characterized in that the sealing gate (5) is a pneumatic sealing gate and the shielding means (6) is a pneumatic shielding means.

4. The radioactive hot chamber transportation system according to claim 1, wherein backing plates (11) are laid on the bottom plates of the hot chamber A (1) and the hot chamber B (2), the spike rail (7) and the rodless cylinder (4) are laid on the backing plates (11), two first travel switches (12) are arranged on the backing plates (11) and are respectively positioned in the hot chamber A (1) and the hot chamber B (2), and each first travel switch (12) is connected with the 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 perform corresponding actions, and the trigger signals of the first travel switches (12) are generated in response to the first travel switches (12) being touched by the transport vehicle (3);

when a first stroke 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 reversed, and drives the transport vehicle (3) to move into the hot chamber A (1);

when a first stroke switch (12) positioned 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) to be closed.

5. The radioactive hot chamber transportation 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 both connected with the control unit, the control unit controls the opening and closing of the cylinder A (501) and the 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 chamber 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) enables the second travel switch (502) to be touched and generated in response to the opening of the sealing gate (5).

6. The radioactive hotcell transport system according to claim 4, wherein the shielding mechanism (6) comprises a connecting section (601) and a shielding block (602), the connecting section (601) is fixed between the hotcell A (1) and the hotcell B (2), the connecting section (601) is a hollow box-shaped structure enclosed 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 cart (3), and the shielding block (602) is arranged inside the connecting section (601) and located on one side of the channels (611).

7. The radioactive hot chamber transport system according to 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 position of 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 a shielding block (602), one end of a cylinder B (605) is connected with the shielding block (602), the other end of the cylinder B (605) is connected with a surrounding plate (603), the control unit is connected with the cylinder B (605), and the control unit controls the cylinder B (605) to drive the shielding block (602) to move in a connecting section (601), so that the shielding block (602) is far away from a shielding compensation access door (604) and closes a channel (611) or moves towards the shielding compensation access door (604) to open the channel (611);

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

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

8. The radioactive heat chamber transportation system according to claim 7, wherein two frame bodies (607) communicated with the channel (611) are further arranged on two sides of the connecting section (601), the planes of two frame plates (608) symmetrical to the two frame bodies (607) are flush with the plane of the bottom plate of the heat chamber and fixedly connected with the bottom plate, the aperture of a duct (612) formed by the frame plates (608) of the two frame bodies (607) is smaller than that of the channel (611), the surface of the shielding block (602) with the rolling wheels is positioned between the plane of the frame plate (608) parallel to the surface of the shielding block and the plane of the coaming (603), the coaming (603) in contact with the rolling wheels and the frame plate (608) positioned on two sides of the coaming form a pit-shaped structure, and the distance between adjacent axles (306) of the transportation vehicle (3) is larger than the length of the pit in the connecting section (601).

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

10. The radioactive heat chamber transportation system according to claim 2, wherein the transport vehicle (3) comprises a vehicle plate (301), wheels (302), a U-shaped bearing guide beam (303), a connecting piece (304), reinforcing ribs (305) and an axle (306), the wheels (302) are fixedly connected to two sides of the axle (306), the reinforcing ribs (305) are fixed to the corresponding axle (306), the vehicle plate (301) is connected with the reinforcing ribs (305), the U-shaped bearing guide beam (303) penetrates through the reinforcing ribs (305), notches of the U-shaped bearing guide beam (303) are in clearance fit with the spike rail (7), the connecting piece (304) is fixed to the reinforcing ribs (305) at the end portion of the transport vehicle (3), and the connecting piece (304) is detachably and fixedly connected with the cross-shaped joint (10).