Embedded air pipe structure of linear accelerator

Abstract

The pre-buried air pipe structure comprises a pre-buried long pipe, the two ends of the pre-buried long pipe are each provided with an elbow, and the ends of the elbows on the two sides are each provided with an outlet short pipe; a joint hoop is assembled at the end part of the outlet short pipe on one side, and a linear accelerator joint pipe is inserted into the joint hoop; l-shaped supporting plates are assembled at the tops and the bottoms of the pre-buried long pipe and the outlet short pipe correspondingly, traction holes are formed in the left sides and the right sides of the L-shaped supporting plates correspondingly, and traction rods are assembled in the traction holes; the embedded long pipe and the elbow are connected through a clamping assembly, and the outlet short pipe and the elbow are connected through a clamping assembly. The pre-buried air pipe structure of the linear accelerator is simple in structure and convenient to operate, and the Z-shaped pre-buried air pipe is formed by connecting the long pipe, the short pipe and the elbow, so that one-time pouring in place can be met, and meanwhile radiation generated by the linear accelerator can be prevented from escaping from the air pipe.

Description

Technical Field

[0001] This patent relates to the field of pre-buried air duct technology, specifically a pre-buried air duct structure for a linear accelerator. Background Art

[0002] Medical linear accelerator is a radiotherapy device developed in the 1970s. It is a high-tech product that applies high-energy physics to medical technology. During operation, the accelerator will produce radioactive pollution and non-radioactive pollution. The radioactive pollution is mainly X-radiation, and the non-radioactive pollution is the production of a small amount of O3 and NO2 waste gas. Radioactive pollution is solved by shielding walls, and non-radioactive pollution O3 and NO2 waste gas is solved by ventilation;

[0003] In the prior art, the shielding wall of the medical linear accelerator room is cast in one go using concrete. The thickness of the reinforced concrete wall is 2.4 meters. All pre-buried pipes must be cast in place at one time at the same time as the concrete casting. However, the traditional pre-buried air ducts have certain limitations when embedded in the traditional vertical wall method, and air duct leakage is prone to occur. Therefore, the prior art needs to be improved. Utility Model Content

[0004] The purpose of this patent is to provide a linear accelerator pre-buried air duct structure to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, this patent provides the following technical solutions: a linear accelerator pre-buried air duct structure, comprising a pre-buried long tube, both ends of the pre-buried long tube are equipped with elbows, and the ends of the elbows on both sides are equipped with outlet short tubes;

[0006] The end of the outlet short pipe on one side is equipped with a joint clamp, and the linear accelerator joint pipe is inserted into the joint clamp;

[0007] The top and bottom of the embedded long tube and the outlet short tube are both equipped with L-shaped support plates, and the left and right sides of the L-shaped support plate are both provided with traction holes, and traction rods are installed in the traction holes;

[0008] The embedded long pipe and the elbow as well as the outlet short pipe and the elbow are connected via a clamping assembly;

[0009] Both ends of the opening of the joint clamp are equipped with fastening plates, and the side walls of the fastening plates are provided with screw holes, and the bolt bodies are screwed into the screw holes.

[0010] Preferably, a circular groove is formed at the bottom end of the bolt body, a bolt rod is installed in the circular groove, a fastening nut is screwed to the outside of the bolt rod, a fastening screw groove is formed at the bottom end of the bolt rod, and a fastening bolt is screwed to the inside of the fastening screw groove;

[0011] The outer wall of the bolt rod is equidistantly provided with slots along the fastening screw groove.

[0012] Preferably, a fixing ring is installed on the outer upper end of the bolt rod, and an annular pressing plate, a spring and an annular rubber sheet are mounted on the circumferential surface of the bolt rod.

[0013] Preferably, a limiting cavity is provided on the inner wall of the joint clamp, and a limiting block is installed on the outer wall of the accelerator joint tube, and the limiting block is clamped in the limiting cavity.

[0014] Preferably, the accelerator joint tube comprises an inner layer, an outer layer and supporting ribs, which are integrally formed.

[0015] Preferably, the clamping assembly includes a symmetrical plate, a clamping slot and a clamping block, the symmetrical plates are installed on the outer walls of both sides of the elbow, the clamping block is installed on the symmetrical plate, the outer walls of the embedded long tube and the protruding short tube are both installed with clamping blocks, and the clamping block is clamped in the clamping slot.

[0016] Preferably, a side wall of the block is provided with an elastic cavity, and an elastic member is installed inside the elastic cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the pre-buried air duct structure of the linear accelerator is simple in structure and easy to operate. By adopting a long tube, a short tube and an elbow to connect the pre-buried air duct in a Z shape, it can not only meet the requirement of one-time casting in place, but also prevent the radiation generated by the linear accelerator from escaping from the air duct. A clamping assembly is provided at the connection of the elbow and an accelerator joint pipe is provided at the outlet short pipe through a joint clamp, thereby facilitating the assembly of the pre-buried pipe and improving the casting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of this patent;

[0019] Figure 2 This is a schematic diagram of the elbow of this patent;

[0020] Figure 3 This is a schematic diagram of the clamping assembly of this patent;

[0021] Figure 4 This is a schematic diagram of the joint clamp and accelerator joint tube of this patent;

[0022] Figure 5 This is a schematic diagram of the bolt body of this patent.

[0023] In the figure: 1 embedded long tube, 2 elbow, 3 outlet short tube, 4 joint clamp, 5 linear accelerator joint tube, 6 traction rod, 7 L-type support plate, 8 symmetrical plate, 9 clamping block, 10 clamping groove, 11 elastic member, 12 bullet cavity, 13 limit block, 14 limit groove, 15 bolt body, 151 bolt, 152 annular rubber sheet, 153 circular groove, 154 annular pressing sheet, 155 extrusion block, 156 fixing ring, 157 spring, 158 fastening nut, 16 fastening plate, 17 screw hole, 18 outer layer, 19 supporting rib plate, 20 inner layer, 21 fastening bolt, 22 slot, 23 fastening screw groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0025] See also Figures 1 to 5 This patent provides a technical solution: a linear accelerator pre-buried air duct structure, including a pre-buried long tube 1, both ends of the pre-buried long tube 1 are equipped with elbows 2, and the ends of the elbows 2 on both sides are equipped with outlet short tubes 3;

[0026] The two outer sides of the elbow 2 are aligned with the pre-buried long pipe 1 and the outlet short pipe 3 respectively, and are provided with connection interfaces. The setting of the elbow 2 can not only effectively perform bending transition, but also enhance radiation isolation, and the effect is better;

[0027] The end of the outlet short pipe 3 on one side is equipped with a joint clamp 4, and a linear accelerator joint pipe 5 is inserted into the joint clamp 4. The outlet short pipe 3 and the joint clamp 4 on one side are an integrated structure, and the accelerator joint pipe 5 is installed to connect with the exhaust of the linear accelerator;

[0028] The top and bottom of the embedded long tube 1 and the outlet short tube 3 are both equipped with L-shaped support plates 7, and the left and right sides of the L-shaped support plate 7 are both provided with traction holes, and the traction holes are equipped with traction rods 6, and the upper and lower L-shaped support plates 7 are connected by the traction rods 6 and clamped on the embedded long tube 1 or the outlet short tube 3;

[0029] The embedded long pipe 1 and the elbow 2 as well as the outlet short pipe 3 and the elbow 2 are connected via a clamping assembly;

[0030] Fastening plates 16 are installed at both ends of the opening of the joint clamp 4, and screw holes 17 are opened on the side walls of the fastening plates 16. Bolt bodies 15 are screwed into the screw holes 17. The joint clamp 4 is fastened by the bolt bodies 15, thereby improving the connection strength between the joint clamp 4 and the accelerator joint tube 5.

[0031] The bottom end of the bolt body 15 is provided with a circular groove 153, in which a bolt rod 151 is installed, and a fastening nut 158 ​​is screwed on the outside of the bolt rod 151, and a fastening screw groove 23 is provided at the bottom end of the bolt rod 151, and a fastening bolt 21 is screwed in the fastening screw groove 23. After the bolt rod 151 is inserted into the screw hole 17, the fastening nut 158 ​​is attached to the outer side of the fastening plate 16 on one side to fix the bolt rod 151, and the fastening bolt 21 is an expansion bolt;

[0032] The outer wall of the bolt rod 151 is provided with slots 22 equidistantly along the fastening screw groove 23. After the fastening nut 158 ​​is screwed into the outside of the bolt rod 151, the fastening bolt 21 is screwed into the fastening screw groove 23. At this time, the bottom of the bolt rod 151 is propped open by the four-petal part divided by the slot 22 to prevent the fastening nut 158 ​​from falling off.

[0033] A fixing ring 156 is installed on the outer upper end of the bolt rod 151 , and an annular pressing sheet 154 , a spring 157 and an annular rubber sheet 152 are mounted on the circumferential surface of the bolt rod 151 .

[0034] The inner wall of the joint clamp 4 is provided with a limiting cavity 14, and the outer wall of the accelerator joint tube 5 is installed with a limiting block 13, which is clamped in the limiting cavity 14. When the accelerator joint 5 is installed in the joint clamp 4, the limiting block 13 can be placed in the limiting cavity 14, which can not only achieve installation positioning, but also improve the connection strength.

[0035] The accelerator joint tube 5 comprises an inner layer 20, an outer layer 18 and a supporting rib 19, which are integrally formed.

[0036] The clamping assembly includes a symmetrical plate 8, a clamping groove 10 and a clamping block 9. Symmetrical plates 8 are installed on the outer walls of both sides of the elbow 2, and the clamping block 9 is installed on the symmetrical plates 8. Blocks 9 are installed on the outer walls of the embedded long tube 1 and the outlet short tube 3, and the block 9 is clamped in the clamping groove 10. The four sides of the left and right side walls of the elbow 2 are installed with stacking plates 8, and blocks 9 are installed on each symmetrical plate 8. The end of the embedded long tube 1 that is connected to the elbow 2 and the end of the inlet and outlet short tube 3 that is connected to the elbow 2 are both provided with a clamping groove 10 that corresponds to and cooperates with the position of the clamping block 9, so that the clamping block 9 can be inserted into the clamping groove 10 to complete the docking. The symmetrical plate 8 is made of rubber material, so that the sealing of the docking point can be achieved.

[0037] The side wall of the clamping block 9 is provided with an elastic cavity 12 , and an elastic member 11 is installed inside the elastic cavity 12 . The clamping block 9 is propped up by the elastic member 11 , thereby improving the clamping strength between the clamping block 9 and the clamping slot 10 .

[0038] Working process and principle: Compared with the prior art, in the prior art, the shielding wall is cast in one time with concrete, and the thickness of the reinforced concrete wall is 2.4 meters. The air conditioning system in the linear accelerator room has the most embedded pipes, including embedded pipes of the air supply and return air system, embedded pipes of the linear accelerator cooling water system, embedded pipes of the indoor unit refrigerant, and embedded pipes of condensed water, etc., and all embedded pipes must be cast at the same time as the concrete, in one go. The main principle of the embedded pipe is to ensure that the radiation harm to the human body is within a safe range under the premise of meeting the use function, and to minimize the area of ​​the embedded pipe. Therefore, the embedded pipe is arranged in an area with low radiation as much as possible, and the direction of the embedded pipe is as perpendicular to the radiation direction as possible to minimize the radiation through the air conditioning pipe. The relative position of the linear accelerator chiller room and the fan room is different from the linear accelerator room, which affects the way of embedding the pipe. According to different linear accelerator manufacturers, the embedded pipe method is also different, mainly divided into three methods: inclined 45° embedded pipe, "Z"-shaped embedded pipe and "U"-shaped embedded pipe. The "Z"-shaped buried pipe of the utility model adopts a split type, and a support component for strengthening support is also provided on each split, and the support component is used to avoid deformation cracks and the like of the buried pipe during one pouring;

[0039] During installation, the pre-buried long pipe 1 is connected to the outlet short pipe 3 through the elbow 2, and then the accelerator joint pipe 5 is installed on the outlet short pipe 3 through the joint clamp 4.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A linear accelerator pre-buried air duct structure, comprising a pre-buried long tube (1), characterized in that: Both ends of the embedded long tube (1) are equipped with elbows (2), and the ends of the elbows (2) on both sides are equipped with outlet short tubes (3); The end of the outlet short pipe (3) on one side is equipped with a joint clamp (4), and a linear accelerator joint pipe (5) is inserted into the joint clamp (4); The top and bottom of the embedded long tube (1) and the outlet short tube (3) are both equipped with L-shaped support plates (7), and the left and right sides of the L-shaped support plate (7) are both provided with traction holes, and traction rods (6) are installed in the traction holes; The embedded long pipe (1) and the elbow (2) as well as the outlet short pipe (3) and the elbow (2) are connected via a clamping assembly; Fastening plates (16) are installed at both ends of the opening of the joint clamp (4), and a screw hole (17) is opened on the side wall of the fastening plate (16), and a bolt body (15) is screwed into the screw hole (17).

2. The linear accelerator pre-buried air duct structure according to claim 1, characterized in that: A circular groove (153) is formed at the bottom end of the bolt body (15), a bolt rod (151) is installed in the circular groove (153), a fastening nut (158) is screwed on the outside of the bolt rod (151), a fastening screw groove (23) is formed at the bottom end of the bolt rod (151), and a fastening bolt (21) is screwed in the fastening screw groove (23); The outer wall of the bolt rod (151) is provided with slots (22) at equal intervals along the fastening screw groove (23).

3. The linear accelerator pre-buried air duct structure according to claim 2, characterized in that: A fixing ring (156) is installed on the outer upper end of the bolt rod (151), and an annular pressing sheet (154), a spring (157) and an annular rubber sheet (152) are mounted on the circumferential surface of the bolt rod (151).

4. The linear accelerator pre-buried air duct structure according to claim 1, characterized in that: A limiting cavity (14) is provided on the inner wall of the joint clamp (4), a limiting block (13) is installed on the outer wall of the accelerator joint tube (5), and the limiting block (13) is clamped in the limiting cavity (14).

5. The linear accelerator pre-buried air duct structure according to claim 4, characterized in that: The accelerator joint tube (5) comprises an inner layer (20), an outer layer (18) and a supporting rib plate (19), which are integrally formed.

6. The linear accelerator pre-buried air duct structure according to claim 1, characterized in that: The clamping assembly comprises a symmetrical plate (8), a clamping slot (10) and a clamping block (9); the symmetrical plates (8) are installed on the outer walls of both sides of the elbow (2); the clamping block (9) is installed on the symmetrical plates (8); the outer walls of the embedded long tube (1) and the outlet short tube (3) are both installed with the clamping blocks (9); and the clamping blocks (9) are clamped in the clamping slot (10).

7. The linear accelerator pre-buried air duct structure according to claim 6, characterized in that: The side wall of the clamping block (9) is provided with an elastic cavity (12), and an elastic member (11) is installed inside the elastic cavity (12).

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