Loading patent…
AssigneesNuctech Company Limited, Tsinghua University
InventorsYaohong Liu, Yumei Chen, Huaping Tang, Jianjun Gao, Xinshui Yan, Feng Gao, Wei Jia, Xiaotian Liang, Jinsheng Liu, De Wei, Wei Yin, Dan Zhang, Chong Gu, Qinghui Zhang
Estimating the term…
A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability. In one aspect, the high-voltage automatic changeover switch performs automatic switching of power source high voltages in an accelerator system, so that the accelerator obtains electron beams with different energies, thus allowing an expanded scope of application of the accelerator, including updating and upgrading of non-destructive testing systems, custom container inspection systems, and high-energy CT systems.
A high-voltage automatic changeover switch, comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Search is unavailable right now. Please try again in a moment.
Actuated through the movement of one or more insulators: at least one insulator being rotatable about its own geometrical axis
Electric switches
About 1 year 10 months of term left · ends 7 Sep 2028 (estimated)
This disclosure generally relates to a changeover switch and in particular, relates to a high-voltage automatic changeover switch for use in a dual-energy or multi-energy electron accelerator system.
An electron accelerator is a device for accelerating charged particles to have a high energy by an electromagnetic field in vacuum, while an electron linear accelerator is a device for accelerating electrons along a linear track by a microwave electromagnetic field. The electron accelerator is widely used in the fields of industry non-destructive test, custom container inspection, high-energy CT, electron beam radiation and so on. In order to obtain a high-intensity acceleration electric field, the electron linear accelerator for accelerating electrons by the microwave electromagnetic field generates a large instantaneous microwave power and works in a pulse form. A high-voltage pulse modulator is a main composite part of such a microwave source and mainly includes a magnetron or klystron, a high-voltage module, a charging module, a pulse forming network module, and a pulse transformer, etc. The high-voltage pulse generated by the high-voltage pulse modulator is supplied to the magnetron and an electron gun, and the high voltage is usually 48 KV and 20 KV or so.
A dual-energy or multi-energy electron accelerator system is an electron accelerator system capable of outputting electron beam streams with two or more kinds of energies. Compared with the traditional single-energy electron accelerator system, the dual-energy or multi-energy electron accelerator system is different not only in diversity of stand-alone energies but having a greater technical advantage of its combination with a new-generation detector system, data image processing system and so on to distinguish different substance materials. In the traditional fields of industry non-destructive test, custom container inspection, high-energy CT, and so on, the single-energy accelerator system can only be used to identify shapes of the object, whereas the dual-energy or multi-energy accelerator system can be used to identify both shapes and material of the object. Thus, the dual-energy or multi-energy accelerator system has wider prospects for application.
FIG. 1 is a structural view of the high-voltage automatic changeover switch according to the present invention;
FIG. 2 is a A-directional view in FIG. 1;
FIG. 3 is a B-directional view in FIG. 1; and
The following are the annotations for the reference numerals in the above Figures: 1—motor; 2—mounting rack; 3—moving rod; 4—rotors; 5—high-voltage contacts; 6—insulating frame; 7—pull rod; 8—compression spring; 9—position contact block; 10—limit switches; 11—control circuit board; 12—fixed frame; 13—fuse; 14—relay.
The further detailed description of an embodiment of the high-voltage automatic changeover switch according to this disclosure is provided below, without the purpose of limiting the scope of the claimed invention.
Referring to FIGS. 1, 2 and 3, the high-voltage automatic changeover switch according to an embodiment comprises an insulating frame 6 with a U-shaped section, an L-shaped mounting rack 2 in fixed connection with the insulating frame 6, and a J-shaped fixed frame 12 in fixed connection with the mounting rack 2. To assure the stability of the U-shaped structure, a pull rod 7 made of an insulating material is mounted at an opening of the U-shaped insulating frame 6.