Moving apparatus and graphite dust accumulation amount online measurement system

Abstract

A moving apparatus and a graphite dust accumulation amount online measurement system, the moving apparatus comprising a supporting mechanism (100), the supporting mechanism (100) comprising a pulley platform assembly (101) and a supporting rod assembly (102), and the supporting rod assembly (102) being arranged above the pulley platform assembly (101); a fixing mechanism (200), the fixing mechanism (200) comprising an emission fixing assembly (201) and a detection fixing assembly (202), the detection fixing assembly (202) being slidably provided on the outer side of the emission fixing assembly (201), and the emission fixing assembly (201) being fixed on the supporting rod assembly (102). By means of the mutual cooperation of the supporting mechanism (100) and the fixing mechanism (200), the measurement system can be moved as a whole, so that the measurement system does not need to be wholly disassembled when a pipeline is measured. By means of the graphite dust accumulation amount online measurement system, the accumulation amount and accumulation form of dust of a fuel loading and unloading system can be measured online.

Description

A mobile device and an online measurement system for graphite dust accumulation Technical Field

[0001] The present invention relates to the field of graphite dust accumulation for high-temperature gas-cooled reactors, and in particular to a moving device and an online graphite dust accumulation measurement system. Background Art

[0002] In the pebble-bed high-temperature gas-cooled reactor (HTGR), graphite serves as both a moderator and a structural material. The reactor core contains approximately 420,000 graphite-based fuel elements with a diameter of approximately 6 cm. In addition, it also contains other graphite materials such as graphite reflectors, carbon bricks, support structures, and various types of conduits. The HTGR operates in a continuous fuel-replacement cycle, with fuel spheres added to the reactor core through a top loading tube and circulated multiple times before finally flowing out of the reactor core through a bottom discharge tube. During the circulation process, the fuel spheres will experience friction and wear against themselves and other graphite components, generating graphite dust. This graphite dust problem can affect the safe and stable operation of HTGRs, and online measurement of graphite dust accumulation is crucial for ensuring the safe and reliable operation of the unit.

[0003] Currently, there is a lack of mature online measurement technology for graphite dust accumulation, and only open-hole inspections can be performed. This will cause equipment shutdown for maintenance and the radioactive working environment makes open-hole inspections inconvenient. In addition, the measurement device is immovable and needs to be disassembled and reassembled when measuring different pipelines. The existing technology uses a gamma detector (such as a CZT detector) to perform a rotational scan of the gamma rays released by the pipeline, gaseous substances, and solid radioactive dust itself outside the tube. The energy difference of the gamma energy spectrum characteristic peaks of the airborne source term and the solid deposition source term is further converted into the graphite dust deposition mass. However, this method cannot meet the needs of online measurement of the dust accumulation amount and accumulation morphology in the fuel loading and unloading system.

[0004] Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] The present invention is proposed in view of the problem that the measuring device in the above-mentioned and / or existing graphite dust accumulation online measurement system cannot be moved as a whole and the problem that the accumulation amount and accumulation form of dust in the fuel loading and unloading system cannot be measured online.

[0007] Therefore, an object of the present invention is to provide a moving device that can move a measuring device as a whole, so that the measuring device does not need to be disassembled as a whole when measuring a pipeline.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a mobile device, including a support mechanism, which includes a pulley platform assembly and a support rod assembly, and the support rod assembly is arranged above the pulley platform assembly; a fixing mechanism, which includes a launch fixing assembly and a detection fixing assembly, the launch fixing assembly is fixed on the support rod assembly, and the detection fixing assembly is slidably arranged on the outside of the launch fixing assembly.

[0009] As a preferred solution of the mobile device described in the present invention, the pulley platform assembly includes a roller, a driving member and a connecting rod frame, the roller is connected to the output end of the driving member through a transmission structure, and the driving member is arranged at the four corners of the connecting frame.

[0010] As a preferred solution of the mobile device described in the present invention, wherein: the support rod assembly includes a main support rod member, a stabilizing rod and a branch rod, the bottom end of the main support rod member is connected to the connecting rod frame, and the other end extends above the connecting frame and is connected to the branch rod, one end of the stabilizing rod is connected to the middle side wall of the main support rod member, and the other end is connected to the connecting frame; the main support rod member includes a middle rod, a vertical rod and a cross rod, one end of the middle rod is fixed under the vertical rod and kept vertical, and one end of the vertical rod is fixed under the cross rod and kept vertical.

[0011] As a preferred solution of the mobile device described in the present invention, wherein: the launch fixing assembly includes a launch shell and a fixed shell, the launch shell is arranged in the fixed shell; fixed columns are symmetrically arranged on the outer wall of the launch shell, and the end of the fixed column away from the launch shell is chamfered; a slip ring is fixed on the outer surface of the fixed shell, and a first sliding groove is axially opened on the fixed shell body, and the fixed column can slide in the first sliding groove.

[0012] As a preferred solution of the mobile device described in the present invention, wherein: the detection and fixing assembly includes a detection shell and a fixing part, and the detection shell is symmetrically slidably arranged on both sides of the fixing part; a fixing pier is fixed on the outer arc surface of the detection shell, and a first fixing hole is provided on the fixing pier; a plurality of holes for light to pass through are provided on the inner wall of the detection shell; the fixing part includes a fixing seat, a first slider, a first spring, a first baffle, a second slider, a second spring and a slide cylinder, the first spring, the second spring, the first slider and the second slider are slidably arranged in the fixing seat, the two sides of the first spring are respectively in contact with the first slider and the fixing seat, the two sides of the second spring are respectively in contact with the second slider and the fixing seat, the first baffle is slidably arranged in the groove cavity at the end of the first slider, the fixing seat is symmetrically fixed on both sides of the slide cylinder, and the end of the second slider is chamfered.

[0013] As a preferred solution of the moving device described in the present invention, wherein: the fixed seat is provided with a first slider cavity, a second slider cavity, an insert cavity, a baffle cavity and a limit cavity, the first slider cavity, the insert cavity, the baffle cavity and the limit cavity are interconnected, the first slider is slidably arranged in the first slider cavity, the second slider is slidably arranged in the second slider cavity, and the first baffle is slidably arranged in the insert cavity; the middle part of the slide cylinder is penetrated to form a slip ring groove, and the side wall of the slide cylinder is also provided with a second slide groove and a third slide groove that are interconnected and distributed in an "L" shape.

[0014] As a preferred solution of the moving device of the present invention, a limiting plate is fixed to the bottom of the first baffle, and the limiting plate is slidably arranged in the limiting cavity.

[0015] Another object of the present invention is to provide an online measurement system for graphite dust accumulation, which can measure the accumulation amount and accumulation form of dust in a fuel loading and unloading system online.

[0016] To solve the above technical problems, the present invention provides the following technical solutions: an online measurement system for graphite dust accumulation, comprising an X-ray emission component disposed in an emission shell; and an X-ray detection component disposed in a detection shell.

[0017] As a preferred solution of the online graphite dust accumulation measurement system of the present invention, the X-ray emission assembly includes an X-ray source and a front collimator, and the front collimator is arranged along the output direction of the X-ray source.

[0018] As a preferred solution of the online measurement system for graphite dust accumulation described in the present invention, the X-ray detection assembly includes a post-collimator, an X-ray detector array, a data processing module and a computing module. The post-collimator and the X-ray detector array are arranged in the mounting hole, and the post-collimator is located along the ray line of the X-ray source. The X-ray detector array is arranged on the receiving side of the post-collimator and receives X-rays passing through the post-collimator. The X-ray detector array is electrically connected to the computing module through the data processing module.

[0019] The beneficial effects of the present invention are as follows: a moving device and an online measurement system for graphite dust accumulation described in the present invention can move the measurement device as a whole through the cooperation of a supporting mechanism and a fixing mechanism, so that the measurement device does not need to be disassembled as a whole when measuring the pipeline; the online measurement system for graphite dust accumulation can measure the accumulation amount and accumulation form of dust in the fuel loading and unloading system online. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] FIG1 is a schematic diagram of the overall structure of the mobile device;

[0022] Figure 2 is a schematic structural diagram of a support mechanism;

[0023] FIG3 is an exploded view of the fixing mechanism;

[0024] FIG4 is a schematic diagram of the parts structure of the fixing mechanism;

[0025] FIG5 is an exploded view of the fixing member;

[0026] FIG6 is a cross-sectional view of parts of the fixing mechanism;

[0027] FIG7 is a schematic structural diagram of an X-ray emission assembly;

[0028] FIG8 is a schematic diagram of an online measurement system for graphite dust accumulation;

[0029] FIG9 is a schematic structural diagram of an X-ray detection assembly. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0033] Example 1

[0034] 1 to 3 , a first embodiment of the present invention is shown, which provides a mobile device, specifically comprising a support mechanism 100, which includes a pulley platform assembly 101 and a support rod assembly 102, wherein the support rod assembly 102 is arranged above the pulley platform assembly 101; a fixing mechanism 200, which includes a launch fixing assembly 201 and a detection fixing assembly 202, wherein the launch fixing assembly 201 is fixed on the support rod assembly 102, and the detection fixing assembly 202 is slidably arranged on the outside of the launch fixing assembly 201.

[0035] Furthermore, the pulley platform assembly 101 includes a roller 101a, a driving member 101b and a connecting rod frame 101c, the roller 101a is connected to the output end of the driving member 101b through a transmission structure, and the driving member 101b is arranged at the four corners of the connecting frame 101c; the support rod assembly 102 includes a main support rod 102a, a stabilizing rod 102b and a branch rod 102c, the bottom end of the main support rod 102a is connected to the connecting rod frame 101c, and the other end extends above the connecting frame 101c and is connected to the branch rod 102c, one end of the stabilizing rod 102b is connected to the middle side wall of the main support rod 102a, and the other end is connected to the connecting frame 101c.

[0036] It should be noted that the roller 101a is a circular wheel, and there are four rollers 101a, which are fixed at the four corners of the bottom of the support mechanism 100; the driving member 101b can drive the roller 101a to rotate through electricity, thereby driving the movement of the entire mobile device; the connecting rod 101c is a cylindrical rod, which is used to connect the roller 101a and support the support rod assembly 102.

[0037] Preferably, the launch fixing assembly 201 includes a launch shell 201a and a fixing shell 201b, and the launch shell 201a is arranged in the fixing shell 201b; the detection fixing assembly 202 includes a detection shell 202a and a fixing member 202b, and the detection shell 202a is symmetrically slidably arranged on both sides of the fixing member 202b.

[0038] It should be noted that the transmitting shell 201a is cylindrical, the fixed shell 201b is also cylindrical, and the inner diameter of the fixed shell 201b is the same as the outer diameter of the transmitting shell 201a; the detecting shell 202a is an arc segment shell with a central angle less than 120 degrees.

[0039] In this embodiment, the operator can move the mobile device through the support mechanism 100 and conveniently fix it on the outside of the pipe section to be detected through the fixing mechanism 200 for detection.

[0040] Example 2

[0041] 1 to 9 , a second embodiment of the present invention is shown, which is based on the previous embodiment.

[0042] Specifically, the main support rod 102a includes a middle rod 102a-1, a vertical rod 102a-2 and a cross rod 102a-3. One end of the middle rod 102a-1 is fixed below the vertical rod 102a-2 and remains vertical, and one end of the vertical rod 102a-2 is fixed below the cross rod 102a-3 and remains vertical; fixed columns 201a-1 are symmetrically arranged on the outer wall of the launching shell 201a, and the end of the fixed column 201a-1 away from the launching shell 201a is chamfered; a slip ring 201b-1 is fixed on the outer surface of the fixed shell 201b, and a first sliding groove 201b-2 is axially opened on the shell of the fixed shell 201b, and the fixed column 201a-1 can slide in the first sliding groove 201b-2.

[0043] It should be noted that the middle pole 102a-1, the vertical pole 102a-2 and the cross pole 102a-3 are all cylindrical poles. The middle pole 102a-1 is fixed in the middle of two rollers 101a that are farther apart. The vertical pole 102a-2 is perpendicular to the ground. The bottom of the vertical pole 102a-2 is fixed to one end of the middle pole 102a-1 and is 90 degrees apart from the middle pole 102a-1. One end of the cross pole 102a-3 is fixed to the top of the vertical pole 102a-2. The cross pole 102a-3 is parallel to the middle pole 102a-1, and the cross pole 102a-3 is 90 degrees apart from the vertical pole 102a-2.

[0044] Furthermore, a fixing pier 202a-1 is fixed on the outer curved surface of the detection shell 202a, and a first fixing hole 202a-2 is opened on the fixing pier 202a-1; a plurality of holes M for light to pass through are opened on the inner wall of the detection shell 202a; the fixing member 202b includes a fixing seat 202b-1, a first slider 202b-2, a first spring 202b-3, a first baffle 202b-4, a second slider 202b-5, a second spring 202b-6 and a slide cylinder 202b-7, and the first spring 202b-3, the second spring 202b-6, the first slider 202b-2 and the second slider 202b-5 are slidably arranged on the fixing seat 202b-1 In the figure, the first spring 202b-3 is in contact with the first slider 202b-2 and the fixed seat 202b-1 on both sides respectively, the second spring 202b-6 is in contact with the second slider 202b-5 and the fixed seat 202b-1 on both sides respectively, the first baffle 202b-4 is slidably set in the groove cavity at the end of the first slider 202b-2, the fixed seat 202b-1 is symmetrically fixed on both sides of the slide cylinder 202b-7, and the end of the second slider 202b-5 is chamfered.

[0045] It should be noted that the fixed pier 202a-1 is a rectangular block, and two fixed piers 202a-1 are fixed on each detection shell 202a. The two fixed piers 202a-1 are spaced more than 100 degrees and less than 120 degrees around the center of the detection shell 202a; the first fixing hole 202a-2 is a square hole; the fixed seat 202b-1 is a square seat; the first slider 202b-2 is a rectangular block; the second slider 202b-5 is also a rectangular block; the first baffle 202b-4 is a rectangular plate; and the slide cylinder 202b-7 is a cylindrical cylinder.

[0046] Preferably, the fixing seat 202b-1 is provided with a first slider cavity 202b-1a, a second slider cavity 202b-1b, an insert cavity 202b-1c, a baffle cavity 202b-1d and a limit cavity 202b-1e. The first slider cavity 202b-1a, the insert cavity 202b-1c, the baffle cavity 202b-1d and the limit cavity 202b-1e are interconnected. The first slider 202b-2 is slidably disposed in the first slider cavity 202b-1a, and the second slider 202b-5 is slidably disposed in the first slider cavity 202b-1a. In the second slider cavity 202b-1b, the first baffle 202b-4 is slidably set in the insert cavity 202b-1c; the middle part of the slide cylinder 202b-7 is penetrated to form a sliding ring groove 202b-7a, and the second slide groove 202b-7b and the third slide groove 202b-7c that are interconnected and distributed in an "L" shape are also opened on the side wall of the slide cylinder 202b-7; the limiting plate 202b-4a is fixed at the bottom of the first baffle 202b-4, and the limiting plate 202b-4a is slidably set in the limiting cavity 202b-1e.

[0047] It should be noted that the first slider cavity 202b-1a is a rectangular cavity, and the first slider cavity 202b-1a is slidably connected to the first slider 202b-2; the second slider cavity 202b-1b is a rectangular cavity, and the second slider cavity 202b-1b is slidably connected to the second slider 202b-5; the baffle cavity 202b-1d is a right-angled triangle cavity, the right-angled side of the baffle cavity 202b-1d is connected to the first slider cavity 202b-1a, the hypotenuse of the baffle cavity 202b-1d is located at the bottom of the baffle cavity 202b-1d, and the baffle cavity 202b-1d is narrower than the first slider cavity 202b-1a; the limit cavity 202b-1e is a rectangular cavity, and the limit cavity 202b-1e is a right-angled triangle cavity. The cavity 202b-1e is connected to the hypotenuse of the baffle cavity 202b-1d; the limit cavity 202b-1e is wider than the baffle cavity 202b-1d; the slip ring groove 202b-7a is in a circular ring shape, and the slip ring groove 202b-7a is slidingly connected to the slip ring 201b-1; the second slide groove 202b-7b is an arc groove, and the central angle of the second slide groove 202b-7b is 90 degrees; the third slide groove 202b-7c is a vertical groove, and the third slide groove 202b-7c is perpendicular to the second slide groove 202b-7b; the limit plate 202b-4a is a parallelogram plate, and the limit plate 202b-4a is slidingly connected to the limit cavity 202b-1e, and is used to limit the first baffle 202b-4.

[0048] In this embodiment, when the operator needs to remove the mobile device from the measured pipe, he needs to first pull open the second slider 202b-5 so that the second slider 202b-5 slides out of the first fixing hole 202a-2. After the second sliders 202b-5 on both sides of the detection shell 202a are pulled out, the detection shell 202a can be directly pulled out. After that, the operator needs to rotate the slide 202b-7 until the third slide groove 202b-7c overlaps with the first slide groove 201b-2 in the vertical direction, and the fixing column 201a-1 can be directly pulled out, so that the operator can directly pull out the transmitting shell 201a vertically; when the transmitting shell 201a and the detection shell 202a are both removed, the horizontally movable support mechanism 100 can move the measured pipe out of the gap formed by the main support member 102a; at the same time, the operator can also add a radioactive source to the removed transmitting shell 201a.

[0049] It should be noted that when the operator needs to install the mobile device on the measured pipeline, the support mechanism 100 must be moved horizontally first so that the measured pipeline is at the intersection of the axes of the three branch rods 102c. Then, the operator must vertically install the launch shell 201a so that the fixed column 201a-1 is inserted into the bottom of the first slide groove 201b-2 and the third slide groove 202b-7c, and then the slide cylinder 202b-7 is rotated horizontally so that the fixed column 201a-1 slides from the bottom of the third slide groove 202b-7c to the other side of the second slide groove 202b-7b; the fixed column 201a-1 is in the second slide groove 202 During the sliding process in b-7b, the fixed column 201a-1 will squeeze the first slider 202b-2, thereby pushing the first baffle 202b-4 to slide from the shallowest part of the baffle cavity 202b-1d to the deepest part; after the first baffle 202b-4 drops, the top of the first baffle 202b-4 will not block the fixed pier 202a-1 from being inserted into the insertion cavity 202b-1c; after that, the operator can insert the fixed pier 202a-1 into the insertion cavity 202b-1c until the second slider 202b-5 is inserted into the first fixing hole 202a-2, thereby completing the fixation of the detection shell 202a.

[0050] Example 3

[0051] 1 to 9 , which illustrate a third embodiment of the present invention, a system for online measurement of graphite dust accumulation is provided, comprising a mobile device.

[0052] Specifically, the X-ray emitting assembly 300 is disposed in the emitting housing 201 a ; the X-ray detecting assembly 400 is disposed in the detecting housing 202 a .

[0053] Furthermore, the X-ray emission assembly 300 includes an X-ray source 301 and a front collimator 302, and the front collimator 302 is arranged along the output direction of the X-ray source 301; the X-ray detection assembly 400 includes a rear collimator 401, an X-ray detector array 402, a data processing module 403 and a computing module 404, the rear collimator 401 and the X-ray detector array 402 are arranged in the mounting hole M, and the rear collimator 401 is located along the ray line of the X-ray source 301, the X-ray detector array 402 is arranged on the receiving side of the rear collimator 401, and receives the X-rays passing through the rear collimator 401, and the X-ray detector array 402 is electrically connected to the computing module 404 through the data processing module 403.

[0054] It should be noted that the amount of X-ray absorption and scattering by an object is closely related to the density of the object, the atomic number of the element in the object, and the energy of the X-ray. The absorption law is as follows: I = I0e -μd

[0055] Where I is the intensity of the X-rays after penetrating the object, I0 is the intensity of the incident radiation, e is a natural constant, μ is the absorption coefficient of the object, which is a function of the object type and the X-ray energy, and d is the thickness of the object. Therefore, graphite dust, helium, and the equipment pipe wall can be distinguished based on the absorption coefficients at different locations, i.e., their different densities. This allows for online measurement of the amount and morphology of graphite dust accumulated in a specific piece of equipment.

[0056] Preferably, the X-ray detector array 402 can use indirect detectors (scintillator and photodiode array) or direct detectors (amorphous selenium, cadmium telluride (CdTe), cadmium zinc telluride (CdZnTe, CZT), and cadmium selenide (CdSe)), and can be either a linear array or a planar array. Depending on the location of the X-ray target, a single-sided, double-sided, or triple-sided arrangement is adopted. The data processing module 403 includes signal acquisition and an A / D converter, which amplifies and integrates the output signals from the detectors, and then multiplexes and converts them into digital signals for computer processing. The analog-to-digital converter, consisting of a frequency generator and a comparator integrator, is used to collect and process data and transmit it to the calculation module 404. The calculation module 404 processes the input digital signals, calculates the X-ray absorption coefficient for each position, and arranges them into a matrix, i.e., a digital matrix. The digital / analog converter converts each number in the digital matrix into small squares with varying grayscales from black to white, i.e., pixels, which are arranged in the matrix to form a CT image.

[0057] It should be noted that when the emission source and detector are arranged at three points, the calculation module 404 can be used to perform three-dimensional reconstruction of the scanning area; the accumulation morphology of the graphite dust is obtained based on the CT image obtained in the specific equipment or pipeline of the fuel loading and unloading system, and combined with the accumulation density of the graphite dust, the accumulation amount of the graphite dust can be calculated.

[0058] It should also be noted that the online measurement system for graphite dust accumulation can perform three-dimensional reconstruction and intuitive evaluation of the accumulation form and accumulation amount of graphite dust in specific equipment or pipelines within the fuel loading and unloading system, which can avoid problems such as blockage caused by the accumulation of graphite dust and facilitate early cleaning; the supporting mechanism 100 and the fixing mechanism 200 make the mobile device easy to disassemble and move, and can realize measurement within a certain length range of the same equipment, and can also be moved over long distances to realize measurement of equipment and pipelines with different structures, and has a wider applicability.

[0059] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A mobile device, characterized in that: include, A support mechanism (100) comprises a pulley platform assembly (101) and a support rod assembly (102), wherein the support rod assembly (102) is arranged above the pulley platform assembly (101); The fixing mechanism (200) comprises a launch fixing assembly (201) and a detection fixing assembly (202), wherein the launch fixing assembly (201) is fixed on the support rod assembly (102), and the detection fixing assembly (202) is slidably arranged outside the launch fixing assembly (201).

2. The mobile device according to claim 1, characterized in that: The pulley platform assembly (101) comprises a roller (101a), a driving member (101b) and a connecting rod frame (101c); the roller (101a) is connected to the output end of the driving member (101b) via a transmission structure; and the driving member (101b) is arranged at the four corners of the connecting frame (101c).

3. The mobile device according to claim 1 or 2, characterized in that: The support rod assembly (102) comprises a main support rod member (102a), a stabilizing rod (102b) and a branch rod (102c); the bottom end of the main support rod member (102a) is connected to the connecting rod frame (101c), and the other end extends above the connecting frame (101c) and is connected to the branch rod (102c); one end of the stabilizing rod (102b) is connected to the middle side wall of the main support rod member (102a), and the other end is connected to the connecting frame (101c); The main support rod (102a) comprises a middle rod (102a-1), a vertical rod (102a-2) and a cross rod (102a-3); one end of the middle rod (102a-1) is fixed below the vertical rod (102a-2) and kept vertical; one end of the vertical rod (102a-2) is fixed below the cross rod (102a-3) and kept vertical.

4. The mobile device according to claim 3, characterized in that: The launch fixing assembly (201) comprises a launch shell (201a) and a fixing shell (201b), wherein the launch shell (201a) is arranged in the fixing shell (201b); A fixing column (201a-1) is symmetrically arranged on the outer side wall of the emission shell (201a), and one end of the fixing column (201a-1) away from the emission shell (201a) is rounded; A slip ring (201b-1) is fixed on the outer surface of the fixed shell (201b), and a first sliding groove (201b-2) is axially opened on the shell of the fixed shell (201b), and the fixed column (201a-1) can slide in the first sliding groove (201b-2).

5. The mobile device according to claim 4, characterized in that: The detection fixing assembly (202) comprises a detection shell (202a) and a fixing member (202b), the detection shell (202a) is symmetrically slidably arranged on both sides of the fixing member (202b), the centers of the arc surfaces of the plurality of detection shells (202a) coincide at one point, and the detection shell (202a) and the fixing shell (201b) are arranged opposite to each other; A fixing pier (202a-1) is fixed on the outer curved surface of the detection shell (202a), and a first fixing hole (202a-2) is provided on the fixing pier (202a-1); mounting holes (M) are evenly provided on the inner curved side wall of the detection shell (202a); The fixing member (202b) comprises a fixing seat (202b-1), a first slider (202b-2), a first spring (202b-3), a first baffle (202b-4), a second slider (202b-5), a second spring (202b-6) and a slide cylinder (202b-7); the first spring (202b-3), the second spring (202b-6), the first slider (202b-2) and the second slider (202b-5) are slidably arranged in the fixing seat (202b-1); the first spring (202b-3), the second spring (202b-6), the first slider (202b-2) and the second slider (202b-5) are slidably arranged in the fixing seat (202b-1); The two sides of the spring (202b-3) are respectively in contact with the first slider (202b-2) and the fixed seat (202b-1); the two sides of the second spring (202b-6) are respectively in contact with the second slider (202b-5) and the fixed seat (202b-1); the first baffle (202b-4) is slidably arranged in the groove cavity at the end of the first slider (202b-2); the fixed seat (202b-1) is symmetrically fixed on both sides of the slide cylinder (202b-7); and the end of the second slider (202b-5) is chamfered.

6. The mobile device according to claim 5, characterized in that: The fixing seat (202b-1) is provided with a first slider cavity (202b-1a), a second slider cavity (202b-1b), an insert cavity (202b-1c), a baffle cavity (202b-1d) and a limit cavity (202b-1e); the first slider cavity (202b-1a), the insert cavity (202b-1c), the baffle cavity (202b-1d) and the limit cavity (202b-1e) are interconnected; the first slider (202b-2) is slidably disposed in the first slider cavity (202b-1a); the second slider (202b-5) is slidably disposed in the second slider cavity (202b-1b); and the first baffle (202b-4) is slidably disposed in the insert cavity (202b-1c); A sliding ring groove (202b-7a) is formed through the middle of the slide cylinder (202b-7), and a second slide groove (202b-7b) and a third slide groove (202b-7c) which are interconnected and distributed in an "L" shape are also provided on the side wall of the slide cylinder (202b-7).

7. The mobile device according to claim 6, characterized in that: A limiting plate (202b-4a) is fixed to the bottom of the first baffle (202b-4), and the limiting plate (202b-4a) is slidably disposed in the limiting cavity (202b-1e).

8. An online measurement system for graphite dust accumulation, characterized in that: The mobile device comprises any one of claims 1 to 7, further comprising: An X-ray emission assembly (300) disposed in the emission housing (201a); An X-ray detection assembly (400) is disposed in a detection housing (202a).

9. The graphite dust accumulation online measurement system according to claim 8, characterized in that: The X-ray emission assembly (300) comprises an X-ray source (301) and a front collimator (302), wherein the front collimator (302) is arranged along the output direction of the X-ray source (301).

10. The graphite dust accumulation online measurement system according to claim 9, characterized in that: The X-ray detection assembly (400) comprises a rear collimator (401), an X-ray detector array (402), a data processing module (403) and a computing module (404); the rear collimator (401) and the X-ray detector array (402) are arranged in the mounting hole (M), and the rear collimator (401) is located along the ray line of the X-ray source (301); the X-ray detector array (402) is arranged on the receiving side of the rear collimator (401) and receives the X-rays passing through the rear collimator (401); and the X-ray detector array (402) is electrically connected to the computing module (404) via the data processing module (403).

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