Installation case for radiation device, oil-cooling circulation system and x-ray generator

Patent metadata

Field	Value
Publication number	US-9420676-B2
Application number	US-201214129617-A
Country	US
Kind code	B2
Filing date	Dec 31, 2012
Priority date	Jan 6, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Disclosed are an installation case for a radiation device, an oil-cooling circulation system and an X-ray generator which belong to the technical field of X-ray generator. This disclosure aims to solve the technical problems existing in the conventional X-ray generator, that is, the conventional X-ray generator provides bad sealing, the weight of the case body of the conventional X-ray generator is heavy, and the leakage dose of the X-ray in the conventional X-ray generator is large. The installation case for a radiation device according to this disclosure comprising a case body and a collimator fixedly connected with the case body, the collimator being provided with a beam exit aperture and the case body being provided with a beam exit opening, the installation case for a radiation device further comprises a shielding device provided within the case body, the collimator and the shielding device are integrally formed, or the collimator and the shielding device are two separate parts and are fixedly connected with each other; each layer of the shielding device is provided with a ray exit aperture, and the ray exit aperture, the beam exit aperture and the beam exit opening are coaxial. The X-ray generator according to this disclosure comprises the oil-cooling circulation system according to this disclosure. The installation case for a radiation device according to the disclosure provides improved sealing and ray leakage-proof performance.

First claim

What is claimed is:

1. An installation case for a radiation device comprising:
a case body; and
a collimator fixedly connected with the case body, the collimator being provided with a beam exit aperture and the case body being provided with a beam exit openings;
at least a layer of shielding device provided within the case body, the at least a layer of shielding device is made of a material that can shield a radioactive ray, and between the at least a layer of shielding device and the case body, there is a space in which liquid can flow and parts can be installed;
wherein the collimator and the at least a layer of shielding device are integrally formed, or the collimator and the at least a layer of shielding device are two separate parts and are fixedly connected with each other; wherein the at least a layer of shielding device is provided with a ray exit aperture, and wherein the ray exit aperture, the beam exit aperture, and the beam exit opening are coaxial; and
wherein the at least a layer of shielding device is in a cylindrical or prismatic shape and comprises a cylindrical body including two end openings, a first end cover and a second end cover, wherein the first end cover and the second end cover are fixedly connected with the two end openings of the cylindrical body, respectively, and at least one of the first end cover, the second end cover, and the cylindrical body is provided with a fluid channel and/or a circuit channel.

2. The installation case for a radiation device according to claim 1 , wherein:
the radioactive ray is an x-ray;
the at least a layer of shielding device is made of insulation material;
with the at least a layer of shielding device comprises multiple layers of shielding device of which an inner layer of the multiple layers of shielding device is located inwardly of an outer layer of the multiple layers of shielding device, and between the inner layer of the multiple layers of shielding device and the outer layer of the multiple layers of shielding device, and between the case body and an outermost layer of the multiple layers of shielding device, there are spaces for flowing of liquid and mounting of parts.

3. The installation case for a radiation device according to claim 2 , wherein: the circuit channel and/or the fluid channel is a through hole in a bent shape or an oblique hole provided in at least one of the first end cover, the second end cover and the cylindrical body; or at least one of the first end cover, the second end cover and the cylindrical body is in a dual-layer structure that is formed by superimposing an outer plate and an inner plate, and
wherein a liquid flowing cavity is provided between the outer plate and the inner plate, and both of the outer plate and the inner plate are provided with a flow guiding orifice communicating with the liquid flowing cavity, and the fluid channel is constituted by the flow guiding orifices and the liquid flowing cavity, and the orthographic projection of the flow guiding orifice in the outer plate in the axial direction thereof and the flow guiding orifice provided in the inner plate are entirely staggered.

4. The installation case for a radiation device according to claim 3 , wherein: the bent shape is a right-angle polygonal-line shape;
both of the first and second end covers are provided with the fluid channels and the circuit channels;
a plurality of the flow guiding orifices are distributed on the outer plate or the inner plate of the first end cover or the second end cover along the circumferential direction of the cylindrical body at equal angle intervals, and the distances between the respective flow guiding orifices and the axis of the cylindrical body are equal with each other;
the cylindrical body is provided with inner screw threaded tubes embedded therein, and the inner screw threaded tubes each are provided with inner screw thread, and the portion of a connection bolt having outer screw thread passes through the outer plate and engages with the inner screw thread of the inner screw threaded tube, so that the cylindrical body and the first and second end covers are connected and fixed together;
the inner plate is fixedly provided with a positioning pole which is embedded in a positioning counter bore in the outer plate and is tightly fitted with the positioning counter bore;
a step portion in a step shape is provided at the inside end edge of the cylindrical body, and the step portion bears against the edge of the inner plate.

5. The installation case for a radiation device according to claim 1 , wherein: the shielding device is made of lead oxide;
the beam exit opening is filled with a blocking window, and the blocking window is made of a material through which the radioactive ray can transmit, and the blocking window functions to realize liquid and gas seal between the inside of the case body and the outside of the case body;
the case body comprises a main body portion including two end openings, a first case cover and a second case cover, wherein:
the first case cover and the second case cover are fixedly provided at the two end openings of the main body portion, respectively, the main body portion is integrally formed, and the material for the first case cover and the second case cover is the same as that for the main body portion.

6. The installation case for a radiation device according to claim 5 , wherein: the shielding device is made of trilead tetroxide;
the main body portion is made of aluminum or aluminum alloy material and is formed by using a stretch forming process or a wire electrode cutting process;
sealing strips are provided between the first case cover and the main body portion and/or between the second case cover and the main body portion, wherein: the end face of the main body portion is provided with a step face or a groove, and the sealing strip is provided on the step face or provided in the groove and extends beyond the end face of the main body portion, and the first case cover and/or the second case cover are close to the surface of the main body portion and press against the portions of the sealing strips extending beyond the end face of the main body portion, or a step face or groove is provided on an edge of the first case cover and/or the second case cover, the sealing strip is provided on the step face or provided in the groove and extends beyond the edge of the first case cover and/or the second case cover, and the main body portion is close to the surface of the first case cover and/or the second case cover and presses against the portions of the sealing strips extending beyond the edge of the first case cover and/or the second case cover.

7. An oil-cooling circulation system, comprising:
a liquid-filled box filled with an insulation liquid; and
a cooling device for reducing the temperature of the insulation liquid, and the cooling device comprises an oil pump, a heat radiator including a liquid inlet, a liquid outlet, and a cooling fan;
wherein:
the liquid-filled box is constituted by an installation case for a radiation device, the installation case comprising a case body and a collimator fixedly connected with the case body, the collimator being provided with a beam exit aperture and the case body being provided with a beam exit opening, the installation case further comprising a layer or layers of shielding devices provided within the case body, the layer or layers of shielding devices being made of a material that can shield a radioactive ray, and defining, between the layer or layers of shielding devices and the case body, a space in which liquid can flow and parts can be installed, the layer or layers of shielding devices being in a cylindrical or prismatic shape and comprising a cylindrical body including two end openings, a

Assignees

• Nuctech Co Ltd
• Univ Tsinghua

Inventors

• Chen Zhiqiang
• Zhao Ziran
• Ding Fuhua
• Wu Wanlong
• Luo Xilei
• Zheng Zhimin

Classifications

• H01J35/16

  Vessels; Containers; Shields associated therewith · CPC title

• G21F5/015

  for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers · CPC title

• H05G1/04

  Mounting the X-ray tube within a closed housing · CPC title

• H05G1/025 Primary

  Means for cooling the X-ray tube or the generator · CPC title

• H05G1/02

  Constructional details · CPC title