CN-121662686-B - Spectrometer adaptation high-power end window X-ray tube

CN121662686BCN 121662686 BCN121662686 BCN 121662686BCN-121662686-B

Abstract

The invention relates to the field of X-ray tubes, in particular to a spectrometer adaptive high-power end window X-ray tube which comprises a tube, an anode target, a cathode filament and a cooling mechanism, wherein the anode target is coaxially arranged at one end inside the tube, the cathode filament is in an annular shape, a ray end window for a ray to pass through is arranged on the tube, insulating oil is also injected into the tube, a power supply socket is also arranged at one end, far away from the end window, of the tube, the cooling mechanism is arranged inside the tube and can cool the anode target, the cooling mechanism comprises two anode cooling tubes spirally wound on the power supply socket, a circulation cavity is arranged inside the anode target, and one ends, extending into the tube, of the two anode cooling tubes are communicated with the circulation cavity. The invention can uniformly cool a plurality of positions of the tube, and can ensure the uniformity of electron emission and the uniformity of electron emission by the annular cathode filament.

Inventors

Pei Xuxin
PEI YANG
JING YUGANG
WANG XIAOLIN

Assignees

丹东深博电子仪器有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (7)

1. The spectrometer is adapted to a high-power end window X-ray tube, and is characterized by comprising a pipe fitting, an anode target, a cathode filament and a cooling mechanism; The cathode filament is in an annular shape, is coaxially arranged in the pipe fitting and is positioned between the anode target and the inner wall of the pipe fitting, and a ray end window for a ray to pass through is arranged at one end of the pipe fitting, which is close to the anode target; The cooling mechanism comprises two anode cooling pipes spirally wound on the power supply socket, and the end part of the pipe fitting is respectively provided with a water inlet and a water outlet which are communicated with the corresponding anode cooling pipes; the cathode filament is fixed on the inner side of the pipe fitting, and the cathode filament is fixed on the inner side of the pipe fitting; The installation ring is coaxially arranged inside the pipe fitting and positioned between the reflection grid and the anode target, a plurality of installation grooves are circumferentially arranged on the installation ring, the installation grooves are radially arranged, a plurality of installation plates are arranged, the installation plates can be slidably arranged in the corresponding installation grooves, guide grooves are formed in two ends of each installation plate, vertical strips are slidably arranged in each guide groove and perpendicular to the surfaces of the corresponding installation plates, and arc-shaped interference plates for interfering with cathode filaments are arranged on one sides, close to each other, of the two vertical strips; The mounting ring is also provided with an annular groove for avoiding the cathode filament, and the annular groove is communicated with a plurality of corresponding mounting grooves; The one end slope that arc conflict board was kept away from to every vertical strip is provided with the guide strip, is the acute angle setting between guide strip and the corresponding vertical strip, and mounting panel center department is provided with the bar that is used for dodging the guide strip and wears the groove, and the groove both ends are worn to the bar are provided with the triangle-shaped guide block that corresponds guide strip complex.
2. The spectrometer fitting high power end window X-ray tube of claim 1, wherein the tube is further provided with an annular cavity, the outer wall of the tube is further provided with two cathode cooling tubes, both cathode cooling tubes are communicated with the annular cavity, and insulating oil is further injected into the tube.
3. A spectrometer adapting high power end window X-ray tube according to claim 1, characterized in that the material of the radiation end window is beryllium alloy material.
4. The spectrometer adapting high power end window X-ray tube of claim 1, further comprising a reflective grid disposed between the cathode filament and the anode target.
5. The spectrometer adapting high power end window X-ray tube of claim 1, wherein each mounting groove is further provided with an extension plate at an end thereof remote from the center of the mounting ring, a threaded hole is provided at the center of the extension plate, and a threaded rod is threaded in the threaded hole.
6. A spectrometer adapting high power end window X-ray tube according to claim 1, characterized in that a return spring is further provided between each mounting plate and the inner wall of the bottom of the corresponding mounting plate.
7. The spectrometer adapting high power end window X-ray tube of claim 1, wherein the end of each guide strip away from the vertical strip is further provided with a longitudinal strip, the end of the longitudinal strip away from the guide strip is provided with a first arc surface contacting with the cathode filament, the center of each mounting plate is provided with a contact column, and the end of the contact column corresponding to the mounting plate is provided with a second arc surface contacting with the cathode filament.

Description

Spectrometer adaptation high-power end window X-ray tube Technical Field The invention relates to the field of X-ray tubes, in particular to a spectrometer adaptive high-power end window X-ray tube. Background The X-ray tube is a vacuum diode working under high voltage and is a core device for generating X-rays, and the core principle is that a high-speed electron flow is utilized to strike a target material so as to convert part of kinetic energy into X-ray radiation energy. It is widely applied to the fields of medical imaging (X-ray, CT), industrial nondestructive testing (XRD) and material analysis (XRD). CN217983258U is a high-power X-ray tube, the high-power X-ray tube comprises an X-ray tube body, the X-ray tube body is composed of a glass shell, a cathode and an anode, the cathode and the anode are respectively arranged in the glass shell, the glass shell is in vacuum design, the glass shell is composed of a glass stem, an anode cover and a cathode cover, the surface of the cathode cover is connected with a turnover component, the surface of the anode cover is connected with a heat dissipation component, the heat dissipation component comprises an anode cover sleeve, the anode cover sleeve is sleeved on the surface of the anode cover, a hollow groove is formed in the anode cover sleeve, a spiral pipe is spirally wound in the hollow groove, and the starting end and the tail end of the spiral pipe are respectively connected with an external connection pipe and a return pipe. In this patent, the anode is cooled by the spiral tube, but the cathode inside the tube also generates heat, so that the temperature inside the tube is high, the safety of the equipment is affected, and the utilization rate of electrons generated by the filament to the anode is low, so that the precision of the equipment is affected. Disclosure of Invention The invention mainly aims to provide a spectrometer adaptive high-power end window X-ray tube, which can uniformly cool a plurality of positions of the tube through a spirally arranged anode cooling tube, and can uniformly consume through a ring-shaped cathode filament, thereby ensuring the uniformity of electron emission and the uniformity of electron emission. The spectrometer adapting high-power end window X-ray tube comprises a tube, an anode target, a cathode filament and a cooling mechanism, wherein the anode target is coaxially arranged at one end inside the tube, a vacuum glass shell is further arranged on the anode target, the cathode filament is in an annular shape, the cathode filament is coaxially arranged inside the tube and is positioned between the anode target and the inner wall of the tube, a ray end window for passing rays is arranged at one end, close to the anode target, of the tube, a power supply socket is further arranged at one end, far away from the end window, of the tube, the cooling mechanism is arranged inside the tube and can cool the anode target, the cooling mechanism comprises two anode cooling tubes spirally wound on the power supply socket, the end parts of the tube are respectively provided with a water inlet and a water outlet which are communicated with the corresponding anode cooling tubes, a circulating cavity is arranged inside the anode target, and one ends, extending into the tube, of the two anode cooling tubes are communicated with the circulating cavity. Preferably, the pipe fitting is internally provided with an annular cavity, the outer wall of the pipe fitting is further provided with two cathode cooling pipes, the two cathode cooling pipes are communicated with the annular cavity, and insulating oil is further injected into the pipe fitting. Preferably, the material of the ray end window is beryllium alloy material. Preferably, a reflective grid is also arranged between the cathode filament and the anode target. Preferably, a positioning mechanism for fixing the cathode filament is further arranged inside the pipe fitting. The positioning mechanism comprises a mounting ring, a mounting plate and vertical strips, wherein the mounting ring is coaxially arranged inside a pipe fitting and positioned between a reflecting grid and an anode target, a plurality of mounting grooves are circumferentially arranged on the mounting ring, the mounting plates are radially arranged, the mounting plates can be slidably arranged in the corresponding mounting grooves, guide grooves are arranged at two ends of each mounting plate, the vertical strips are slidably arranged in each guide groove, the vertical strips are perpendicular to the surfaces of the corresponding mounting plates, arc-shaped collision plates for abutting against cathode filaments are arranged at one sides of the two vertical strips, which are close to each other, annular grooves for avoiding the cathode filaments are further arranged on the mounting ring, the annular grooves are communicated with the corresponding plurality of mounting grooves, guide strips are obliquely arrange