A kind of passive nuclear material level gauge material species correction measuring device

Abstract

The utility model discloses a kind of material species correction measurement devices of passive nuclear material level meter, it is related to passive nuclear material level meter technical field, including material level meter body, the material level meter body one end is provided with adjusting mechanism, the adjusting mechanism includes lead screw sliding table assembly, support and bevel gear one, in the utility model, bevel gear two drives bevel gear one rotation, bevel gear one and crossbar synchronous rotation, the inclination angle of adjustable detector assembly, by motor one drive screw rotation, can drive connecting block along guide plate sliding, to change the use position of detector assembly, adjustment detector assembly received effective radiation amount, compensate the absorption difference of different material species, complete material species correction measurement, satisfy the requirement of precision and stability to industrial production, the installation bolt in limit block can limit installation ring, improve the stability when using built-in component, also convenient for installation ring and built-in component installation and disassembly in the installation of positioning ring bottom.

Description

Technical Field

[0001] This utility model relates to the field of passive nuclear level gauge technology, and in particular to a material type correction measuring device for a passive nuclear level gauge. Background Technology

[0002] A passive nuclear level gauge is a level measurement device based on the principle of natural nuclear radiation detection. Its core feature is that it does not require the addition of a radioactive source. Instead, it utilizes the interaction between the material's own natural radioactive substances (such as uranium, thorium, and potassium isotopes naturally present in ores, coal, and certain chemical raw materials) or environmental background radiation and the material to achieve non-contact measurement of the material height (level) in the container.

[0003] Passive nuclear level gauges rely on the correlation between gamma-ray absorption and level. However, differences in material type directly alter the absorption efficiency of gamma rays. Without material type correction, the same level will correspond to different detector signals, causing the measurement results to deviate from the actual value and failing to meet the accuracy and stability requirements of industrial production. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that differences in material type directly change the absorption efficiency of gamma rays. Without material type correction, the same material level will correspond to different detector signals, causing the measurement results to deviate from the actual value. Therefore, a material type correction measurement device for a passive nuclear level gauge is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a passive nuclear level gauge material type correction measuring device, comprising a level gauge body, an adjustment mechanism at one end of the level gauge body, the adjustment mechanism comprising a lead screw slide assembly, a support member and a bevel gear, a crossbar inserted through the support member, an auxiliary member fixedly connected to the outer ring surface of the crossbar, a detector assembly fixedly connected to one end of the auxiliary member, both the detector assembly and the auxiliary member being rotatably connected to the support member, a connector fixedly connected to one side of the support member, one side of the connector being connected to the slider of the lead screw slide assembly by bolts, one side of the lead screw slide assembly being connected to the level gauge body by bolts, and a motor fixedly connected to the top of the lead screw slide assembly, the output shaft of the motor being fixedly connected to the lead screw of the lead screw slide assembly.

[0006] Preferably, a mounting component is fixedly connected to one side of the support member, a second motor is fixedly connected to one side of the mounting component, a second bevel gear is fixedly connected to the output shaft of the second motor, a first bevel gear meshes with one side of the second bevel gear, and the shaft of the first bevel gear is fixedly connected to the crossbar.

[0007] Preferably, a connecting block is fixedly connected to one side of the support member, a guide plate is slidably connected to one end of the connecting block, an internal component is fixedly connected to the top of the guide plate, and the internal component is slidably connected to the support member.

[0008] Preferably, the outer ring of the built-in component is fixedly connected to a mounting ring, and the inner ring of the mounting ring is connected to a positioning ring by a thread.

[0009] Preferably, both the mounting ring and the outer ring of the positioning ring are fixedly connected to limit blocks, and bolts are used to connect the limit blocks.

[0010] Preferably, an extension block is fixedly connected to the top of the positioning ring, and one side of the extension block is fitted into the level gauge body.

[0011] Preferably, the bottom of the level gauge body extends through the extension block, and the bottom of the level gauge body is inserted into the built-in component.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, motor one is fixedly connected to the lead screw slide assembly, bevel gear one is fixedly connected to the crossbar, bevel gear two drives bevel gear one to rotate, and bevel gear one rotates synchronously with the crossbar, which can adjust the tilt angle of the detector assembly. By driving the lead screw to rotate through motor one, the connecting block can be driven to slide along the guide plate, thereby changing the usage position of the detector assembly, adjusting the effective radiation amount received by the detector assembly, compensating for the absorption differences of different materials, completing the material type correction measurement, reducing measurement deviation, and meeting the requirements of industrial production for accuracy and stability.

[0014] 2. In this utility model, the extension block is fitted into the level gauge body, and the positioning ring and the mounting ring are connected by threads. When the mounting ring is rotated, the bottom of the positioning ring is connected to the mounting ring, and the limiting blocks on the positioning ring and the mounting ring overlap. At this time, the bolts installed inside the limiting blocks can limit the mounting ring, improve the stability of the built-in parts when in use, and also facilitate the installation and disassembly of the mounting ring and the built-in parts at the bottom of the positioning ring. Attached Figure Description

[0015] Figure 1 This utility model presents a three-dimensional structural schematic diagram of a material type correction measuring device for a passive nuclear level gauge;

[0016] Figure 2 This utility model provides a schematic diagram of the connection between the mounting ring and the built-in components of a passive nuclear level gauge material type correction measuring device;

[0017] Figure 3 This utility model provides a schematic diagram of the connection block and guide plate structure of a material type correction measuring device for a passive nuclear level gauge;

[0018] Figure 4 This utility model presents a schematic diagram of the auxiliary component structure and installation of a material type correction measuring device for a passive nuclear level gauge.

[0019] Legend: 1. Level gauge body; 2. Extension block; 3. Limiting block; 4. Positioning ring; 5. Mounting ring; 6. Internal component; 7. Guide plate; 8. Screw slide assembly; 9. Motor 1; 10. Connecting component; 11. Detector assembly; 12. Connecting block; 13. Support component; 14. Bevel gear 1; 15. Bevel gear 2; 16. Motor 2; 17. Mounting component; 18. Auxiliary component; 19. Crossbar. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: Refer to Figures 1-4 The following describes a passive nuclear level gauge with a material type correction measuring device: The device includes a level gauge body 1. One end of the level gauge body 1 has an adjustment mechanism, which includes a screw slide assembly 8, a support member 13, and a bevel gear 14. A crossbar 19 is inserted through the support member 13. An auxiliary member 18 is fixedly connected to the outer ring of the crossbar 19. A detector assembly 11 is fixedly connected to one end of the auxiliary member 18. Both the detector assembly 11 and the auxiliary member 18 are rotatably connected to the support member 13. A connector 10 is fixedly connected to one side of the support member 13. One side of the connector 10 is connected to the slider of the screw slide assembly 8 via bolts. One side of the screw slide assembly 8 is connected to the level gauge body. 1. A motor 9 is fixedly connected to the top of the lead screw slide assembly 8 via bolts. The output shaft of the motor 9 is fixedly connected to the lead screw of the lead screw slide assembly 8. A mounting part 17 is fixedly connected to one side of the support 13. A motor 16 is fixedly connected to one side of the mounting part 17. A bevel gear 15 is fixedly connected to the output shaft of the motor 16. A bevel gear 14 meshes with one side of the bevel gear 15. The shaft of the bevel gear 14 is fixedly connected to the crossbar 19. A connecting block 12 is fixedly connected to one side of the support 13. A guide plate 7 is slidably connected to one end of the connecting block 12. An internal component 6 is fixedly connected to the top of the guide plate 7. The internal component 6 is slidably connected to the support 13.

[0023] When different material types need to be corrected, the screw slide assembly 8 is first driven by motor 9. The slider on the screw moves linearly along the guide rail. The slider drives the support 13 to move linearly in sync through the connector 10. The detector assembly 11 moves linearly with the support 13, directly changing its distance from the radiation source and the material surface. The connecting block 12 on the support 13 slides along the guide plate 7 to prevent the support 13 from shifting due to its own weight or vibration during displacement, ensuring the accuracy of the displacement direction of the detector assembly 11. The crossbar 19 is fixed to the detector assembly 11 through the auxiliary component 18. Therefore, when the crossbar 19 rotates, the detector assembly 11 will rotate around the axis of the crossbar 19, changing the angle at which it receives radiation from the radiation source. By adjusting the position of the detector assembly 11 in two dimensions of linear displacement and angular rotation, the relative distance and angle between it and the radiation source and the material are changed, thereby accurately controlling the effective amount of radiation received by the detector and reducing misjudgment of material type.

[0024] Example 2: Figures 1-3 As shown, an installation ring 5 is fixedly connected to the outer ring surface of the built-in component 6. A positioning ring 4 is connected to the inner ring surface of the installation ring 5 by a thread. Limiting blocks 3 are fixedly connected to the outer ring surfaces of both the installation ring 5 and the positioning ring 4. Bolts are connected between the limiting blocks 3. An extension block 2 is fixedly connected to the top of the positioning ring 4. One side of the extension block 2 is fitted into the level gauge body 1. The extension block 2 passes through the bottom of the level gauge body 1, and the bottom of the level gauge body 1 is inserted into the built-in component 6.

[0025] After the positioning ring 4 passes through the bottom of the level gauge body 1, it is directly inserted into the built-in component 6 to further fix the axial position of the level gauge body 1 and ensure its coaxiality with the built-in component 6. The longitudinal section of the positioning ring 4 is T-shaped, and its lower half is connected to the mounting ring 5 by threads, which can improve the stability of the built-in component 6 during use. By tightening the bolts between the mounting ring 5 and the upper limit block 3 of the positioning ring 4, the relative positions of the two are locked, reducing the loosening of the mounting ring 5 and the built-in component 6, which facilitates the later maintenance or replacement of the level gauge body 1.

[0026] The usage and working principle of this device are as follows: First, install the entire level gauge on the top of the container. Then, adjust the distance between the detector assembly 11 and the material according to the type of material in the container. During adjustment, start motor 9 via an external controller. Motor 9 drives the lead screw of the lead screw slide assembly 8 to rotate. The lead screw drives the slider and connecting piece 10 to move downwards. The support piece 13 and the connecting blocks 12 on both sides slide along the guide plate 7, separating the top of the support piece 13 from the built-in piece 6, thus adjusting the position of the support piece 13 and the detector assembly 11. Motor 16 drives bevel gear 15 to rotate. Gear 2 15 drives bevel gear 14 to rotate, and crossbar 19 rotates coaxially with bevel gear 14. At this time, auxiliary component 18 and detector assembly 11 rotate with crossbar 19, which can change the tilt angle of detector assembly 11 during use, avoid material accumulation blocking radiation, adjust the effective radiation amount received by detector assembly 11, and complete the correction through mechanical structure to compensate for the absorption differences of different materials. Rotate the bolt inside the limit block 3, rotate the mounting ring 5, so that the mounting ring 5 is separated from the positioning ring 4, and separate the connecting part 10 from the slider, so that the mounting ring 5, the built-in part 6 and the detector assembly 11 can be disassembled.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A passive nuclear level gauge material type correction measuring device, comprising a level gauge body (1), characterized in that: The level gauge body (1) is provided with an adjustment mechanism at one end. The adjustment mechanism includes a screw slide assembly (8), a support (13), and a bevel gear (14). A crossbar (19) is inserted through the support (13). An auxiliary component (18) is fixedly connected to the outer ring of the crossbar (19). A detector assembly (11) is fixedly connected to one end of the auxiliary component (18). Both the detector assembly (11) and the auxiliary component (18) are rotatably connected to the support (13). A connector (10) is fixedly connected to one side of the support (13). One side of the connector (10) is connected to the slider of the screw slide assembly (8) by bolts. One side of the screw slide assembly (8) is connected to the level gauge body (1) by bolts. A motor (9) is fixedly connected to the top of the screw slide assembly (8). The output shaft of the motor (9) is fixedly connected to the screw of the screw slide assembly (8).

2. The material type correction and measuring device for the passive nuclear level gauge according to claim 1, characterized in that: The support member (13) is fixedly connected to a mounting member (17) on one side, and a second motor (16) is fixedly connected to a side of the mounting member (17). The output shaft of the second motor (16) is fixedly connected to a second bevel gear (15). A first bevel gear (14) meshes with a side of the second bevel gear (15). The shaft of the first bevel gear (14) is fixedly connected to the crossbar (19).

3. The material type correction and measuring device for the passive nuclear level gauge according to claim 1, characterized in that: A connecting block (12) is fixedly connected to one side of the support member (13), and a guide plate (7) is slidably connected to one end of the connecting block (12). An internal component (6) is fixedly connected to the top of the guide plate (7), and the internal component (6) is slidably connected to the support member (13).

4. The material type correction and measuring device for the passive nuclear level gauge according to claim 3, characterized in that: The outer ring of the built-in component (6) is fixedly connected to an installation ring (5), and the inner ring of the installation ring (5) is connected to a positioning ring (4) by a thread.

5. The material type correction and measuring device for the passive nuclear level gauge according to claim 4, characterized in that: The outer ring surfaces of the mounting ring (5) and the positioning ring (4) are both fixedly connected to limit blocks (3), and bolts are connected between the limit blocks (3).

6. The material type correction and measuring device for the passive nuclear level gauge according to claim 5, characterized in that: The top of the positioning ring (4) is fixedly connected to an extension block (2), and one side of the extension block (2) is fitted into the material level gauge body (1).

7. The material type correction and measuring device for the passive nuclear level gauge according to claim 1, characterized in that: The bottom of the level gauge body (1) extends through the extension block (2), and the bottom of the level gauge body (1) is inserted into the built-in component (6).

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