X-ray proportional counter

Abstract

The utility model discloses an X-ray proportional counter, which is characterized in that one side of the upper end of a bottom plate is fixedly connected with a storage battery for providing power, the other side of the upper end of a shell is provided with a detection tube for detecting the intensity of X-rays, and one side, close to the detection tube, of the bottom plate is fixedly connected with a circuit board for receiving detection signals. The two ends of the detection tube are electrically connected with the circuit board through conducting strips. The proportional counter has the beneficial effects that the detection tube can be better limited while the detection tube can be easily mounted through the bent elastic sheet arranged on the conductive sheet, the situation that the detection tube bounces and is collided and damaged when the proportional counter is collided is avoided, and the elastic sheet can provide elastic support for the detection tube, so that the detection tube can be prevented from being collided and damaged. The impact force borne by the detection tube when the proportional counter is collided is reduced, and the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation dose measurement, in particular to an X-ray proportional counter. Background Art

[0002] A proportional counter refers to a gas-filled counter whose working voltage is in the proportional region. When the working voltage exceeds the working voltage in the saturation region, the ions generated by the primary ionization of nuclear radiation in the ionization chamber collide with gas molecules many times during the process of accelerated movement under the action of a strong electric field to produce secondary ionization. The structure of this detector is mostly cylindrical, with the anode filament in the center and the cylindrical shell as the cathode. The working gas is generally a mixture of an inert gas and a small amount of negatively charged gas. The incident particles collide with the gas atoms in the tube to ionize the atoms, generating electrons and positive ions. Under the action of the electric field, electrons move toward the central anode filament, and positive ions drift toward the cathode at a much slower speed than electrons. Electrons are accelerated by the strong electric field near the anode filament to obtain energy, which can re-ionize atoms. The output pulse amplitude derived from the anode filament is large and is proportional to the initial ionization.

[0003] A proportional counter usually uses radioactive particles to enter a detection tube, which then breaks through the inert gas in the tube and discharges to the tube wall, and then the signal can be detected. When installing the detection tube, two clips are usually used to clamp the electrodes at both ends of the detection tube, and the detection tube is fixed by friction. Although this fixing method is convenient for the installation of the detection tube, the protection effect of the detection tube is poor. When encountering a collision, the detection tube is easily ejected in the clip and damaged, causing the proportional counter to fail.

[0004] Therefore, those skilled in the art provide an X-ray proportional counter to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide an X-ray proportional counter to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An X-ray proportional counter, wherein a battery for providing power is fixedly connected to one side of the upper end of the base plate, a detection tube for detecting X-ray intensity is arranged on the other side of the upper end of the shell, a circuit board for receiving detection signals is fixedly connected to one side of the base plate close to the detection tube, and both ends of the detection tube are electrically connected to the circuit board through conductive sheets.

[0008] Furthermore, the detection tube includes a cathode shell and an anode wire, both ends of the cathode shell are fixedly connected with electrodes in contact with the conductive sheet, and an anode wire is arranged in the cathode shell, and one end of the anode wire is fixedly connected to one of the electrodes.

[0009] Furthermore, the upper end of the base is fixedly connected to a conductive sheet via a limit block, and the upper end of the conductive sheet is bent in a U shape to form a spring sheet for clamping the detection tube.

[0010] Furthermore, the lower end of the spring sheet is bent to form a supporting portion for supporting the detection tube, and the upper end of the spring sheet is raised to form a stopper for preventing the detection tube from popping out.

[0011] Furthermore, both sides of the elastic sheet are raised to form a baffle, and the two baffles are bent at one side away from the conductive sheet.

[0012] Furthermore, the upper end of the baffle is bent in an arc shape to form a guide plate, and the two guide plates are bent at a side away from the detection tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) By setting the spring sheet bent on the conductive sheet, the detection tube can be easily installed and better limited to prevent the detection tube from bouncing and being damaged by collision when the proportional counter is hit. The spring sheet can also provide elastic support for the detection tube, reducing the impact force on the detection tube when the proportional counter is hit, thereby improving the protection effect.

[0015] (2) The baffle and guide plate can prevent the detection tube from sliding sideways when impacted, thereby improving the stability of the detection tube after installation. The guide plate arranged at the upper end of the baffle can guide the detection tube when installing the detection tube, and at the same time, the baffle can be opened by squeezing the guide plate by the detection tube, thereby making the detection tube easier to install. After the installation is completed, the detection tube can be clamped to further enhance the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an X-ray proportional counter according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of an X-ray proportional counter according to an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a detection tube in an X-ray proportional counter according to an embodiment of the utility model.

[0020] Reference numerals:

[0021] 1. Bottom plate; 2. Shell; 3. Battery; 4. Detection tube; 41. Cathode shell; 42. Anode wire; 5. Circuit board; 6. Conductive sheet; 7. Electrode; 8. Limit block; 9. Spring piece; 10. Support part; 11. Block; 12. Baffle; 13. Guide plate; 14. Display screen; 15. Wire. DETAILED DESCRIPTION

[0022] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0023] Embodiment 1:

[0024] See also Figure 1-3 According to an X-ray proportional counter of an embodiment of the utility model, a battery 3 for providing power is fixedly connected to one side of the upper end of the base plate 1, a detection tube 4 for detecting the intensity of X-rays is arranged on the other side of the upper end of the shell 2, a circuit board 5 for receiving detection signals is fixedly connected to one side of the base plate 1 close to the detection tube 4, and both ends of the detection tube 4 are electrically connected to the circuit board 5 through conductive sheets 6.

[0025] According to the above scheme of the utility model, the storage battery 3 can provide power to the proportional counter, and the detection tube 4 can discharge the cathode shell 41 after the X-ray particles enter the cathode shell 41 through the positive electrode of the detection tube, and then the X-ray particles break through the air, so that the wire 15 (see FIG. 1 ) connected to the negative electrode of the cathode shell 41 is connected to the positive electrode of the cathode shell 41. Figure 3 ) to detect the intensity of the X-rays, and then through the display screen 14 (see Figure 1 ) is displayed and the pulses are counted, and the spring clip 9 for clamping the detection tube 4 can ensure that the detection tube 4 can be easily installed while better limiting the detection tube, thereby preventing the proportional counter from bouncing up and being damaged by collision when the proportional counter is hit, and the spring clip 9 can also provide elastic support for the detection tube 4, thereby reducing the impact force on the detection tube 4 when the proportional counter is hit, thereby improving the protection effect.

[0026] Embodiment 2:

[0027] See also Figure 2-3 The detection tube 4 includes a cathode shell 41 and an anode wire 42. Both ends of the cathode shell 41 are fixedly connected with electrodes 7 in contact with the conductive sheet 6. The cathode shell 41 is provided with an anode wire 42, and one end of the anode wire 42 is fixedly connected to one of the electrodes 7.

[0028] Through the above-mentioned scheme of the utility model, by setting the electrodes 7 at both ends of the cathode shell 41, the detection tube 4 can be conveniently installed in the proportional counter and connected to the circuit, and the anode wire 42 set in the cathode shell 41 can facilitate the guidance of X-ray particles, so that the X-ray particles enter the cathode shell 41 and discharge, and then the pulses of the X-ray particles can be counted through the set wire 15.

[0029] Embodiment three:

[0030] See also Figure 2-3 The upper end of the base is fixedly connected to a conductive sheet 6 through a limit block 8. The upper end of the conductive sheet 6 is bent in a U shape to form a spring sheet 9 for clamping the detection tube 4. The lower end of the spring sheet 9 is bent to form a support portion 10 for supporting the detection tube 4. The upper end of the spring sheet 9 is raised to form a block 11 for preventing the detection tube 4 from popping out. Both sides of the spring sheet 9 are raised to form a baffle 12, and the two baffles 12 are bent to a side away from the conductive sheet 6. The upper end of the baffle 12 is bent in an arc shape to form a guide plate 13, and the two guide plates 13 are bent to a side away from the detection tube 4.

[0031] Through the above scheme of the utility model, the conductive sheet 6 is provided to facilitate the installation of the detection tube 4, and the spring sheet 9 provided on one side of the conductive sheet 6 can clamp the detection tube 4 through the elastic force after the spring sheet 9 is squeezed and deformed, and the support part 10 provided at the lower end of the spring sheet 9 for supporting and limiting can limit the installation depth of the detection tube 4 to prevent the electrode 7 of the detection tube 4 from being separated from the spring sheet 9, and cooperate with the stopper 11 provided at the upper end of the spring sheet 9, so that the spring sheet 9 can limit the upper end of the electrode 7 when squeezing the electrode 7 to prevent the detection tube 4 from falling out. The baffles 12 provided on both sides of the spring sheet 9 can prevent the detection tube 4 from sliding sideways when being impacted, and improve the stability of the detection tube 4 after installation, and the guide plate 13 provided on the upper end of the baffle 12 can guide the detection tube 4 when installing the detection tube 4, and at the same time, the baffle 12 can be opened by the detection tube 4 squeezing the guide plate 13, so that the detection tube 4 is easier to install, and the detection tube 4 can be clamped after the installation is completed, and the stability is further enhanced.

[0032] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0033] In actual application, the electrode 7 of the detection tube 4 is aligned with the middle of the guide plate 13 and pressed down, and then the guide plate 13 is squeezed by the electrode 7 to separate the baffle 12, and then the electrode 7 continues to press down and squeeze the spring sheet 9 to bend and deform the spring sheet 9. When the electrode 7 is inserted between the stopper 11 and the support portion 10, the installation of the detection tube 4 is completed. The comprehensive protection of the spring sheet 9 can prevent the detection tube 4 from falling out when it is impacted, thereby preventing the detection tube 4 from being damaged. In addition, the arranged spring sheet 9 can also provide elastic support for the detection tube, further absorb the impact force generated on the detection tube 4 when the proportional counter is impacted, and strengthen the protection of the detection tube 4.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An X-ray proportional counter, comprising a base plate (1) and a housing (2), characterized in that: A storage battery (3) for providing power is fixedly connected to one side of the upper end of the base plate (1), a detection tube (4) for detecting the intensity of X-rays is arranged on the other side of the upper end of the shell (2), a circuit board (5) for receiving detection signals is fixedly connected to one side of the base plate (1) close to the detection tube (4), and both ends of the detection tube (4) are electrically connected to the circuit board (5) via a conductive sheet (6).

2. An X-ray proportional counter according to claim 1, characterized in that: The detection tube (4) comprises a cathode shell (41) (2) and an anode wire (42), both ends of the cathode shell (41) (2) are fixedly connected with electrodes (7) in contact with the conductive sheet (6), and an anode wire (42) is arranged in the cathode shell (41) (2), and one end of the anode wire (42) is fixedly connected to one of the electrodes (7).

3. An X-ray proportional counter according to claim 1, characterized in that: The upper end of the base is fixedly connected to a conductive sheet (6) via a limit block (8), and the upper end of the conductive sheet (6) is bent in a U shape to form a spring sheet (9) for clamping the detection tube (4).

4. An X-ray proportional counter according to claim 3, characterized in that: The lower end of the spring sheet (9) is bent to form a support portion (10) for supporting the detection tube (4), and the upper end of the spring sheet (9) is raised to form a stopper (11) for preventing the detection tube (4) from popping out.

5. An X-ray proportional counter according to claim 4, characterized in that: Both sides of the elastic sheet (9) are raised to form a baffle (12), and both baffles (12) are bent at a side away from the conductive sheet (6).

6. An X-ray proportional counter according to claim 5, characterized in that: The upper end of the baffle (12) is bent in an arc shape to form a guide plate (13), and the two guide plates (13) are bent at a side away from the detection tube (4).

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