CN109727693B - Connector for I-131 absorption bottle - Google Patents

Abstract

The invention discloses a connector for an I-131 absorption bottle, which comprises a retractor part, a plug part, a hoop, a sliding rail and a bracket. The hoop and the retractor part are sequentially arranged along the X axial direction, the retractor part, the plug-in connector part, the sliding rail and the support are sequentially arranged from top to bottom, one end of the retractor part is placed in the hoop and is in sliding connection with the hoop, the plug-in connector part is in sliding connection with the sliding rail, and the sliding rail is fixedly connected with the support. The connector can install or replace the connecting pipelines between the absorption bottle, the tail gas treatment device, the material inlet and outlet bottle and other components in the iodine-131 production device under the strong ionizing radiation environment by means of the hot chamber manipulator, so that the transitional connection between the glass container and the metal pipeline is realized, and the safety and the reliability of iodine-131 production are improved, and the risk of ionizing radiation damage to maintenance personnel is reduced.

Description

A connector for I-131 absorption bottle

technical field

The invention belongs to the technical field of radioisotope preparation, and in particular relates to a connector for an I-131 absorption bottle.

Background technique

Radioactive iodine _- 131 is an important raw material for the production of radioactive drugs such as Na ¹³¹ I capsules. The Institute of Nuclear Physics and Chemistry of the Chinese Academy of Engineering Physics, as well as the China Institute of Atomic Energy and the China Institute of Nuclear Power in China have all used horizontal devices for commercial production of radioactive iodine-131. The gas circuit system of the existing iodine-131 production device generally includes a distillation tube, an absorption bottle, an alkali washing bottle, an activated carbon adsorption column and a vacuum pump, which are connected in sequence. The connection between components can only be made of plastic or rubber pipes; moreover, the most basic configuration on the absorption bottle is the inlet of iodine vapor (carrier gas), the filling port of dilute lye, and the absorption liquid containing iodine-131 (ie, the product solution) The intake port and the exhaust gas discharge port are also provided with inlet and outlet ports on the absorption bottle with water cooling function. These pipes for transporting gas and liquid must be manually connected by the staff. Due to the high temperature of the carrier gas and the high-intensity γ-ray of radioactive iodine-131 in the carrier gas, the plastic tubes or latex tubes used to connect the components are prone to aging and cracking for a long time, which often leads to unstable carrier gas flow rate and iodine vapor leakage to pollute the environment. And affect the yield of iodine-131, and the replacement of aging plastic tubes or latex tubes stained with radioactive iodine-131 is troublesome and dangerous, often requiring staff to strictly decontaminate the production site and then enter the hot room for treatment, and maintenance personnel will Exposure to high doses of radiation, especially when it is necessary to solve emergencies such as pipe ruptures during the production process. Although some iodine-131 production units have integrated the distillation tube and the absorption bottle, which eliminates the potential safety hazard that the high temperature of the carrier gas will damage the connecting pipeline between the distillation tube and the absorption bottle, the strong ionizing radiation in the hot chamber can cause damage to other plastic tubes. Or the safety hazard of latex tube damage has not been reduced.

SUMMARY OF THE INVENTION

In order to improve the safety and reliability of radioactive iodine-131 production, the present invention provides a connector for an I-131 absorption bottle.

The connector of the invention can remotely, quickly and safely install or replace the connecting pipes between the various components in the radioactive iodine-131 production device by operating the hot cell manipulator, and the use of metal pipe connection is more conducive to improving the reliability of the production device and improving the reliability of the production device. Reduce security risks.

The technical scheme that realizes the present invention is as follows:

A connector for an I-131 absorption bottle of the present invention is characterized in that the connector includes a retractor part, a plug connector part, a ferrule, a slide rail and a bracket. The connection relationship of the above-mentioned connector is that the ferrule and the tractor part are arranged in turn along the X axis, the tractor part, the connector part, the slide rail and the bracket are arranged in order from top to bottom, and one end of the tractor part is placed. Inside the ferrule and slidably connected with the ferrule, the connector part is slidably connected with the slide rail, and the slide rail is fixedly connected with the bracket.

The ferrule is a metal sheet member with symmetrical structure at both ends, and the two ends of the ferrule are fixedly connected by screws to form a ring and a square box with an upper opening, and there is a vertical upward in the center of the X-axis wall of the square box. Open your mouth. The retractor part includes a screw rod, a triangular block, a hemisphere and a handle, and the connector part includes a sliding seat, a bracket I, a bracket II, and a baffle.

The brackets I, brackets II and baffles in the connector part are all provided with slots and card slots with upward openings. The frame II and the baffle are fixed on the sliding seat, the bracket I and the bracket II are located on one side of the Y axis of the sliding seat and are arranged symmetrically with the X axis of the sliding seat, and the baffle is located on the other side of the Y axis of the sliding seat and is arranged on the side of the sliding seat. On the X axis of the sliding seat, along the X axis, a plug connector I is installed on the bracket I, a plug connector II is installed on the bracket II, and the lead screw and triangle block in the retractor part are installed on the baffle plate.

The plug joint I includes a taper rod I, a steel pipe I and a vertical insert I arranged horizontally in the X axis, and the plug joint II includes an L-shaped hollow taper rod II and a steel pipe II arranged horizontally in the X axis. , Y-axis horizontally arranged bellows and vertically arranged inserts II. The tapered rod I is placed in the slot of the bracket I, the insert piece I is inserted downward into the slot of the bracket I, and the tapered head rod I vertically passes through the center of the insert piece I and is fixedly connected with the insert piece I. , the steel pipe I passes through the cone head rod I and is sealed and fixed with the cone head rod I. The taper-head rod II is placed in the slot of the bracket II, the insert piece II is inserted downward into the slot of the bracket II, and the taper-head rod II vertically passes through the center of the insert piece II and is fixedly connected with the insert piece II. , the steel pipe II passes through the cone head rod II and is sealed and fixedly connected with the cone head rod II, and the bellows is fixedly connected with the cone head rod II; the cone head rod I and the cone head rod II are each provided with two cone heads. The annular groove is fitted with a sealing ring in the groove.

The hemisphere and the handle in the retractor part are respectively fixed on both ends of the horizontally arranged screw rod, the triangular block is vertically arranged in the middle of the screw rod, and a threaded hole is arranged in the center of the triangular block, and the screw rod passes through it. Threaded hole and sliding connection with triangle block. The screw rod is arranged in parallel with the slide rail, the screw rod is placed in the slot of the baffle, the triangular block is inserted downward in the slot of the baffle, and the hemisphere is placed in the square box of the hoop and is connected to the inner wall of the square box. Slide to connect. The sliding rail is a double-spoke sliding rail composed of two parallel rails.

The ferrule is fixedly connected to the external absorption bottle, and the absorption bottle is matched with pipes corresponding to the cone-head rod I and the cone-head rod II.

The X-axis lines of the ferrule, the screw rod, the sliding seat and the sliding rail are arranged on the same elevation. The X-axis centers of the steel pipe I and the taper rod I, and the X-axis centers of the steel pipe II and the taper rod II are respectively overlapped and arranged.

The ferrule, the part of the tractor, the slide rail, the bracket, the steel pipe I and the steel pipe II are made of stainless steel. The sliding seat, bracket I, bracket II, baffle plate, taper rod I, taper rod II, insert piece I and insert piece II in the connector part are made of polyethylene. The sealing ring is made of silicone rubber.

The brief working principle of the connector for the I-131 absorbing bottle of the present invention is as follows: the manipulator is operated to install the plug connector I and the plug connector II on the bracket respectively, and the rotating handle drives the connector part to the bracket through the screw drive. The ferrule is moved in the direction, and the plug connector I and the plug connector II are respectively inserted into the corresponding pipes on the external absorption bottle and inserted tightly, so as to realize the transition connection between the absorption bottle and the metal connecting pipes of other components.

The beneficial effect of the present invention is that the existing plastic or rubber pipes are replaced by metal pipes with better radiation resistance to prolong the working life of the Na ¹³¹ I production device, and by adopting the metal pipes suitable for the production environment of radioactive iodine-131 in the hot room Dedicated connectors enable remote replacement of connecting pipes between related components of the production plant, significantly reducing safety risks for maintenance personnel. The connector of the invention has a compact and small structure, is easy to operate, and has good safety and reliability.

Description of drawings

Fig. 1 is the structural representation of a kind of connector used for I-131 absorption bottle of the present invention;

2 is a schematic top view of a connector for an I-131 absorption bottle of the present invention;

Fig. 3 is the sectional view of the taper rod I in the present invention;

Fig. 4 is the sectional view of the taper rod II in the present invention;

In the figure 1. Ferrule 2. Slide rail 3. Bracket 4. Screw 5. Triangular block 6. Hemisphere 7. Handle 8. Slide 9. Bracket I 10. Bracket II 11. Baffle plate 12. Cone head Rod Ⅰ 13. Steel pipe Ⅰ 14. Insert piece Ⅰ 15. Sealing ring 16. Cone rod Ⅱ 17. Steel pipe Ⅱ 18. Bellows 19. Insert piece Ⅱ.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

Fig. 1 is a schematic view of the structure of a connector used for an I-131 absorbing bottle of the present invention, Fig. 2 is a schematic top view of a connector used for an I-131 absorbing bottle of the present invention, and Fig. 3 is a schematic diagram of the present invention. The sectional view of the taper rod I, Figure 4 is the sectional view of the taper rod II in the present invention. In FIGS. 1 to 4 , a connector for an I-131 absorption bottle of the present invention includes a retractor part, a connector part, a ferrule 1 , a slide rail 2 and a bracket 3 . The connection relationship of the above-mentioned connectors is that the ferrule 1 and the tractor part are arranged in turn along the X axis, the tractor part, the connector part, the slide rail 2 and the bracket 3 are arranged in order from top to bottom, and the tractor part is arranged in sequence from top to bottom. One end of the connector is placed in the ferrule 1 and is slidably connected with the ferrule 1, the connector part is slidably connected with the slide rail 2, and the slide rail 2 is fixedly connected with the bracket 3. The ferrule 1 is a metal sheet member with a symmetrical structure at both ends. The two ends of the ferrule 1 are fixedly connected by screws to form a ring and a square box with an upper opening. Straight opening for placing lead screw 4. The retractor part includes a screw rod 4 , a triangular block 5 , a hemisphere 6 and a handle 7 , and the connector part includes a sliding seat 8 , a bracket I9 , a bracket II10 and a baffle 11 .

The bracket I9, bracket II10, and baffle plate 11 in the connector part are provided with upwardly-opening slots and card slots. The sliding seat 8 is placed on the sliding rail 2 and slidingly connected with the sliding rail 2. The frame I9, the bracket II10 and the baffle plate 11 are fixedly arranged on the sliding seat 8. The bracket I9 and the bracket II10 are located on one side of the axis of the sliding seat 8Y and are arranged symmetrically with the axis of the sliding seat 8X. The baffle plate 11 is located on the axis of the sliding seat 8Y. The other side is arranged on the axis of the slide 8X, along the X axis, the plug connector I is installed on the bracket I9, the plug connector II is installed on the bracket II10, and the retractor part is installed on the baffle 11. The screw 4, the triangle block 5.

The plug connector I includes a taper rod I12 horizontally arranged in the X axis, a steel pipe I13 and a vertical insert I14, and the plug connector II includes an L-shaped hollow taper rod II16, a steel pipe II17, which are horizontally arranged in the X axis. , The bellows 18 arranged horizontally in the Y axis and the insert II 19 arranged vertically. The tapered rod I12 is placed in the slot of the bracket I9, the insert I14 is inserted downward into the slot of the bracket I9, and the tapered rod I12 vertically passes through the center of the insert I14 and is fixedly connected with the insert I14. , the steel pipe I13 passes through the taper rod I12 and is sealed and fixedly connected with the taper rod I12. The tapered rod II16 is placed in the slot of the bracket II10, the insert II19 is inserted downward into the slot of the bracket II10, and the tapered rod II16 vertically passes through the center of the insert II19 and is fixedly connected with the insert II19. , the steel pipe II17 passes through the cone head rod II16 and is sealed and fixedly connected with the cone head rod II16, and the bellows 18 is in fixed communication with the cone head rod II16. Two annular grooves are respectively provided on the conical heads of the cone-head rod I12 and the cone-head rod II16, and a sealing ring 15 is matched in the grooves.

The hemisphere 6 and the handle 7 in the described retractor part are respectively fixed on both ends of the horizontally arranged screw rod 4, the triangular block 5 is vertically arranged in the middle of the screw rod 4, and a thread is arranged in the center of the triangular block 5. The screw rod 4 passes through the threaded hole and is slidably connected with the triangle block 5; the screw rod 4 is arranged in parallel with the slide rail 2, the screw rod 4 is placed in the slot of the baffle 11, and the triangle block 5 is inserted downward in In the slot of the baffle 11, the hemisphere 6 is placed in the square box of the ferrule 1 and is slidably connected with the inner wall of the square box. The slide rail 2 is a double-spoke slide rail composed of two parallel rails.

The ferrule 1 is fixedly connected to an external absorption bottle, and pipes corresponding to the cone-head rod I12 and the cone-head rod II16 are matched and arranged on the absorption bottle. The X-axis center lines of the ferrule 1 , the screw rod 4 , the sliding seat 8 and the sliding rail 2 are arranged on the same vertical surface. The X-axis centers of the steel pipe I13 and the taper rod I12, and the X-axis centers of the steel pipe II17 and the taper rod II16 are respectively overlapped and arranged. The ferrule 1, the tractor part, the slide rail 2, the bracket 3, the steel pipe I13 and the steel pipe II17 are made of stainless steel. The sliding seat 8, bracket I9, bracket II10, baffle plate 11, taper rod I12, taper rod II16, insert I14 and insert II19 in the connector part are made of polyethylene. The sealing ring 15 is made of silicone rubber. As shown in Figure 1 to Figure 4.

The circular ring and the square box of the ferrule 1 are folded from stainless steel sheets of symmetrical structure, and the width of the opening on the wall of the square box is matched with the diameter of the screw rod 4 and the hemisphere 6 in the retractor part. The part of the steel pipe I13 passing through the conical head of the conical head rod I12 is shorter, which is beneficial to reduce the residual amount of liquid at the joint caused by the distance between the conical head and the discharge port of the external absorption bottle, while the steel pipe II17 passes through the conical head rod. The part of the conical head of II16 is longer, which is beneficial to inject all the absorption liquid transported through the steel pipe II17 into the external absorption bottle without being sucked into the bellows and causing losses. The said insert piece I14, insert piece II19 and triangular block 5 are respectively corresponding to the bracket I9, bracket II10, and the slot on the baffle 11 are not closely matched, so that the insert piece I14 and the insert piece II19 have a certain space for movement. It is beneficial to avoid the damage to the glass tube of the absorbing bottle when the taper rod is inserted, and to keep the triangular block 5 in the clamping slot with a large X-axis displacement space is beneficial to the loading and unloading of the tractor part.

In this embodiment, a sealing ring is fitted in each groove of the cone-head rod I12 and the cone-head rod II16, and the sealing ring 15 is one of them.

The working process of the present invention is as follows: operate the manipulator to install the plug connector I and the plug connector II in the slots of the bracket I and bracket II respectively, and then place the retractor part horizontally in the square box of the ferrule 1 and the baffle plate 11, insert the triangular block 5 into the slot of the baffle plate 11, the rotary handle 7 drives the connector part to move in the direction of the ferrule 1 through the transmission of the screw 4, and the taper rod head I12, taper rod head II16 are respectively inserted into the corresponding pipes on the external absorption bottle to realize the transitional connection between the absorption bottle and the metal connecting pipes of other components, and with the support of external vacuum pumps and other equipment, the bellows 18, steel pipes I13, and steel pipes II17 are respectively connected from the absorption The bottle is evacuated, the solution containing iodine-131 is withdrawn and the absorption liquid is filled into the absorption bottle. Rotate the handle 7 in the reverse direction, the taper head I12 and the taper head II16 can be withdrawn from the corresponding pipes on the external absorption bottle respectively, and the removed connector part can be transferred out of the hot chamber through the inspection door by the manipulator for maintenance and repair. Realize the remote, fast and safe loading and unloading of the connecting pipeline of the radioactive iodine-131 production unit under the strong ionizing radiation environment in the hot room.

Claims (4)

1. A connector for an I-131 absorption bottle, characterized in that: the connector comprises a retractor part, a connector part, a ferrule (1), a slide rail (2) and a bracket (3) The connection relationship of the above-mentioned connector is that the described ferrule (1), the retractor part are arranged in turn along the X axis, the retractor part, the connector part, the slide rail (2), the bracket (3) from top to bottom One end of the retractor part is placed in the ferrule (1) and is slidably connected with the ferrule (1), the connector part is slidably connected with the slide rail (2), and the slide rail (2) is connected with the bracket (3) fixed connection; The ferrule (1) is a metal sheet member with a symmetrical structure at both ends, and the two ends of the ferrule (1) are fixedly connected by screws to form a ring and a square box with an upper opening. There is a vertical opening upward in the center; the retractor part includes a screw rod (4), a triangular block (5), a hemisphere (6), a handle (7), and the connector part includes a sliding seat (8), a bracket Frame I (9), bracket II (10) and baffle plate (11); The bracket I (9), the bracket II (10), and the baffle plate (11) in the connector part are all provided with upwardly opening slots and card slots, and the sliding seat (8) is placed on the sliding rail ( 2) and slidingly connected with the slide rail (2), the bracket I (9), the bracket II (10) and the baffle plate (11) are fixedly arranged on the slide seat (8), the bracket I (9) and the bracket The frame II (10) is located on one side of the Y axis of the sliding seat (8) and is symmetrically arranged with the X axis of the sliding seat (8), and the baffle plate (11) is located on the other side of the Y axis of the sliding seat (8) and is arranged on the sliding seat (8) On the X axis, along the X axis, a plug connector I is installed on the bracket I (9), a plug connector II is installed on the bracket II (10), and a retractor is installed on the baffle plate (11). The lead screw (4) and the triangular block (5) in the part; The plug joint I includes a taper rod I (12), a steel pipe I (13) and a vertical insert I (14) arranged horizontally in the X axis, and the plug joint II includes an L-shaped horizontal arrangement in the X axis. Hollow cone-head rod II (16), steel pipe II (17), bellows (18) arranged horizontally in the Y-axis, and insert piece II (19) arranged vertically; the cone-head rod I (12) is placed In the slot of the bracket I(9), the insert I(14) is inserted downward into the slot of the bracket I(9), and the tapered rod I(12) vertically passes through the center of the insert I(14). And it is fixedly connected with the insert I (14), the steel pipe I (13) passes through the taper rod I (12) and is sealed and fixedly connected with the taper rod I (12); the taper rod II (16) is placed in the In the slot of the bracket II (10), the insert II (19) is inserted downward into the slot of the bracket II (10), and the tapered rod II (16) vertically passes through the center of the insert II (19) and is inserted into the slot of the bracket II (10). It is fixedly connected with the insert piece II (19), the steel pipe II (17) passes through the cone head rod II (16) and is sealed and fixedly connected with the cone head rod II (16), and the bellows (18) is connected with the cone head rod II (16) Fixed and communicated; two annular grooves are respectively provided on the conical heads of the cone-head rods I (12) and cone-head rods II (16), and a sealing ring (15) is matched in the grooves; The hemisphere (6) and the handle (7) in the retractor part are respectively fixed on both ends of the horizontally arranged screw rod (4), and the triangular block (5) is vertically arranged in the middle of the screw rod (4). , a threaded hole is arranged in the center of the triangular block (5), and the screw rod (4) passes through the threaded hole and is slidably connected with the triangular block (5); the screw rod (4) is arranged in parallel with the slide rail (2), The screw (4) is placed in the slot of the baffle plate (11), the triangular block (5) is inserted downward into the slot of the baffle plate (11), and the hemisphere (6) is placed on the side of the ferrule (1). The inside of the box is slidably connected with the inner wall of the square box; the slide rail (2) is a double-spoke slide rail, which is composed of two parallel rails. 2. A connector for I-131 absorption bottle according to claim 1, characterized in that: the ferrule (1) is fixedly connected to an external absorption bottle, and the absorption bottle is provided with a Pipes corresponding to taper rod I (12) and taper rod II (16). 3. a kind of connector for I-131 absorption bottle according to claim 1 is characterized in that: described ferrule (1), screw (4), sliding seat (8) and sliding rail ( 2) The X-axis center line is set on the same elevation; the X-axis center line of the steel pipe I (13) and the taper rod I (12), the steel pipe II (17) and the taper rod II (16) The X-axis center lines are set to coincide with each other. 4. A connector for an I-131 absorbing bottle according to claim 1, characterized in that: the ferrule (1), the retractor part, the slide rail (2), the bracket (3), Steel pipe I (13) and steel pipe II (17) are made of stainless steel; the sliding seat (8), bracket I (9), bracket II (10), baffle plate (11), The cone-head rod I (12), the cone-head rod II (16), the insert piece I (14) and the insert piece II (19) are made of polyethylene; the sealing ring (15) is made of silicon rubber.

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