Glass accelerating tube for small pulse cyclotron

Abstract

The utility model belongs to the technical field of pulse cyclotrons, and particularly provides a glass accelerating tube for a small pulse cyclotron, which comprises a tube body and a sealing element, the tube body is of an annular structure, an arrangement end and a splicing end are symmetrically arranged on the side wall of the tube body, and inner cavities of the arrangement end and the splicing end are communicated with an inner cavity of the tube body. The arrangement end is used for abutting a circuit of an external high-voltage device, and the splicing end is used for abutting a gas circuit of the external high-voltage device. The splicing end further comprises a filament assembly, a target material, anode terminals and a cathode, and the two anode terminals are symmetrically arranged on the two sides of the splicing end body in the radial direction. According to the scheme, the sealing piece is assembled at the splicing end of the pipe body, the sealing effect is achieved when the splicing end and the oil filling connector of the high-pressure device are assembled, the double-sealing effect is achieved in cooperation with an inner sealing structure of the oil filling connector, the sealing performance of acceleration chamber assembly is further improved, and meanwhile dependence on the sealing structure in an inner cavity of the oil filling connector is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pulse cyclotron, and particularly provide a kind of glass acceleration tube for small pulse cyclotron. BACKGROUND

[0002] As high-energy radiation source, micro pulse cyclotron is designed for cargo inspection system, and is suitable for the inspection of large containers and vehicles.In addition, the device can also be applied to other fields, such as non-destructive testing of thick objects using linear probe array, and scientific research.Cyclotron has the ability to adjust energy output in a wide range, and can realize dual-energy mode when there is a significant difference in staggered pulse energy structure.The main components include radiator, power supply unit, pulse converter and interface unit, which are composed of electromagnet, acceleration chamber, high-pressure injection device, X-ray monitor and thermal sensor, etc.

[0003] In the prior art, the acceleration chamber and the high-pressure device are assembled by plug-in through the oil filling joint.The sealing between the acceleration chamber and the oil filling joint mainly depends on the sealing member on the inner cavity of the oil filling joint to ensure the sealing effect of the splicing.However, once the sealing member in the inner cavity of the oil filling joint fails, it will be difficult to ensure the sealing of the assembly of the acceleration chamber and the high-pressure device, thereby affecting the normal use of the product. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model adopts the technical scheme of a kind of glass acceleration tube for small pulse cyclotron, which comprises a tube body and a sealing element, the tube body is annular structure, the side wall of the tube body is symmetrically provided with arrangement end and splicing end, and the inner cavities of the arrangement end and the splicing end are communicated with the inner cavity of the tube body, the arrangement end is used to connect the circuit of external high-pressure device, and the splicing end is used to connect the gas circuit of external high-pressure device.

[0005] The sealing element is annular structure, which is sleeved on the splicing end.

[0006] Further, a ring groove is formed on the outer circumferential wall of the splicing end, and the sealing element is embedded in the ring groove.

[0007] Further, a plurality of guide strips are uniformly arranged on the inner wall of the ring groove, and a plurality of guide grooves are arranged on the inner wall of the sealing element, when the sealing element is embedded in the ring groove, the guide strips are embedded in the guide grooves one by one.

[0008] Further, the guide strips are axially arranged, and the two ends of the guide strips abut against the inner wall of the ring groove.

[0009] Further, a plurality of annular flanges are arranged on the outer surface of the sealing element.

[0010] Further, a plurality of positioning holes are formed in the side wall of the sealing member, a plurality of screw holes are formed in the surface of the guide strip, the positioning holes and the screw holes correspond to each other in position, bolts are inserted into the positioning holes, and the bolts are screwed into the screw holes.

[0011] Further, the spliced end further comprises a filament assembly, a target material, an anode terminal and a cathode, the two anode terminals are symmetrically arranged on the two sides of the spliced end body in the radial direction, the filament assembly, the target material and the cathode are arranged inside the spliced end, and the two anode terminals are connected with the target material through internal lines.

[0012] Further, the arrangement end is provided with a getter and a terminal.

[0013] The beneficial effects of the utility model are as follows:

[0014] The sealing member is assembled at the spliced end of the pipe body, plays a sealing role when the spliced end is assembled with the oil filling connector of the high-voltage device, cooperates with the internal sealing structure of the oil filling connector, achieves the effect of double sealing, further improves the sealing performance of the acceleration chamber assembly, and reduces the dependence on the sealing structure in the internal cavity of the oil filling connector. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic diagram of the utility model;

[0016] Figure 2 The figure is a structural schematic diagram of the spliced end of the pipe body of the utility model;

[0017] Figure 3 The figure is Figure 2 The figure is an enlarged view of A in the middle;

[0018] Figure 4 The figure is Figure 2 The figure is an enlarged view of B in the middle.

[0019] The figure comprises:

[0020] 1, pipe body;

[0021] 101, annular groove; 102, guide strip; 103, screw hole;

[0022] 2, getter; 3, terminal; 4, filament assembly; 5, target material; 6, anode terminal;

[0023] 7, sealing member;

[0024] 701, annular flange; 702, guide groove; 703, positioning hole;

[0025] 8, cathode. DETAILED DESCRIPTION

[0026] The utility model will be described in detail in combination with the drawings.

[0027] Referring to Figure 1 Figure 4 The utility model provides a glass acceleration tube for small pulse gyrotron, including tube body 1 and sealing piece 7, the tube body 1 is annular structure, the symmetrical arrangement end and splicing end are set up on the lateral wall of tube body 1, and the inner cavity of arrangement end and splicing end all with the inner cavity of tube body 1 are communicated, and the arrangement end is used to butt joint the circuit of external high pressure device, and the splicing end is used to butt joint the gas circuit of external high pressure device.

[0028] Sealing piece 7 is annular structure, and it is sleeved on the splicing end.

[0029] Annular groove 101 is set up on the outer circle peripheral wall of splicing end, and sealing piece 7 is embedded in annular groove 101.

[0030] A plurality of guide strips 102 are uniformly arranged on the inner wall of annular groove 101, a plurality of guide grooves 702 are arranged on the inner wall of sealing piece 7, and when sealing piece 7 is embedded in annular groove 101, guide strips 102 are embedded in guide grooves 702 one by one.

[0031] Guide strips 102 are axially arranged, and the both ends of guide strips 102 abut against the inner wall of annular groove 101.

[0032] The outer surface of sealing piece 7 is provided with a plurality of annular flanges 701.

[0033] A plurality of positioning holes 703 are arranged on the lateral wall of sealing piece 7, a plurality of screw holes 103 are arranged on the surface of guide strips 102, the positions of positioning holes 703 and screw holes 103 correspond one by one, bolts are inserted into positioning holes 703, and the tips of the bolts are screwed into screw holes 103.

[0034] The splicing end further comprises a filament assembly 4, a target material 5, an anode terminal 6, and a cathode 8, two anode terminals 6 are symmetrically arranged on both sides of the splicing end body in the radial direction, the filament assembly 4, the target material 5, and the cathode 8 are arranged inside the splicing end, and the two anode terminals 6 are connected to the target material 5 through internal circuits.

[0035] The arrangement end is provided with a getter 2 and a terminal 3.

[0036] The above content is only the preferred embodiment of the utility model, for the ordinary skilled person in the art, according to the concept of the utility model, many changes can be made in the specific implementation mode and application range, as long as these changes do not deviate from the concept of the utility model, all belong to the protection scope of the utility model.​

Claims

1. A glass accelerating tube for a small pulse cyclotron accelerator, characterized in that: It includes a pipe body and a sealing element. The pipe body has a ring structure. The side wall of the pipe body is symmetrically provided with a placement end and a splicing end. The inner cavities of the placement end and the splicing end are connected to the inner cavity of the pipe body. The placement end is used to connect to the circuit of the external high-pressure device, and the splicing end is used to connect to the air circuit of the external high-pressure device. The sealing element is a ring structure, which is fitted onto the splicing end.

2. The glass accelerating tube for a small pulse cyclotron accelerator according to claim 1, characterized in that: An annular groove is provided on the outer circumferential wall of the splicing end, and the sealing element is embedded in the annular groove.

3. The glass accelerating tube for a small pulse cyclotron accelerator according to claim 2, characterized in that: Multiple guide strips are evenly arranged on the inner wall of the annular groove, and multiple guide grooves are arranged on the inner wall of the seal. When the seal is embedded in the annular groove, the guide strips are embedded into the guide grooves one by one.

4. The glass accelerating tube for a small pulse cyclotron accelerator according to claim 3, characterized in that: The guide bar is axially arranged, and both ends of the guide bar abut against the inner wall of the annular groove.

5. The glass accelerating tube for a small pulse cyclotron accelerator according to claim 1, characterized in that: The outer surface of the seal is provided with multiple annular flanges.

6. The glass accelerating tube for a small pulse cyclotron accelerator according to claim 3, characterized in that: The sealing element has multiple positioning holes on its side wall and multiple screw holes on the surface of the guide strip. The positioning holes and screw holes are positioned in a one-to-one correspondence. Bolts are inserted into the positioning holes and screwed into the screw holes.

7. A glass accelerating tube for a small pulse cyclotron accelerator according to claim 1, characterized in that: The splicing end also includes a filament assembly, a target material, an anode terminal, and a cathode. Two anode terminals are radially symmetrically arranged on both sides of the splicing end body. The filament assembly, target material, and cathode are arranged inside the splicing end. Both anode terminals are connected to the target material through internal circuitry.

8. A glass accelerating tube for a small pulse cyclotron accelerator according to claim 1, characterized in that: The arrangement end is provided with a getter and a terminal.

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