Intelligent sealing diagnostic device for hazardous chemical substance containing barrel

Abstract

The invention discloses an intelligent sealing diagnosis device for a hazardous chemical substance containing barrel, and relates to the technical field of sealing diagnosis of hazardous chemical substance containing barrels, the intelligent sealing diagnosis device comprises a detection bin, a feeding port is formed in the front end of the detection bin, a sealing door is arranged at the upper end of the feeding port, a groove is formed in the bottom end of the interior of the detection bin, and the sealing door is arranged in the groove. A groove is formed in the upper end of the detection bin, a center push rod is installed in the center of the interior of the groove, a jacking seat is installed at the upper end of the center push rod, extrusion push rods are installed on the inner wall of the detection bin, clamping arc plates are installed at the outer ends of the multiple extrusion push rods, and a plurality of first lifting rods are installed at the upper end of the detection bin in a rectangular array mode. Through arrangement of a series of structures and design of multi-sensor cooperative detection, barrel body accurate positioning and multi-angle coverage, the core pain points of incomplete coverage of a single sensor, unstable barrel body positioning and detection environment interference in traditional hazardous chemical substance barrel sealing detection are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of special equipment for environmental protection of solid waste, in particular to an intelligent sealing diagnosis device for hazardous chemical loading barrels. BACKGROUND

[0002] The hazardous chemical loading barrel is a reusable special safety container for containing, storing and transporting various hazardous chemicals. In order to ensure its effective isolation of the hazard source in the whole life cycle, its design, manufacture and use must strictly follow the relevant safety regulations and standards. The core safety performance requirements of such containers include excellent leak-proofness, excellent corrosion resistance and sufficient impact resistance, aiming to maximize the avoidance of harm to personnel, facilities and the environment due to container failure. At the same time, as an important industrial asset, the qualified loading barrel has the potential for multiple cycles of use, and its durability and repairability are key factors to realize efficient use of resources, reduce long-term operating costs and reduce environmental footprint.

[0003] The current industry-wide hazardous chemical loading barrel detection process usually focuses on the confirmation of immediate leakage, and fails to comprehensively assess the overall health status and potential failure risk of the barrel body. For example, the barrel body surface may have serious wear, scratches, corrosion thinning, stress cracks or material aging due to long-term use, and this single "pass / fail" binary detection paradigm has double contradictions: on the one hand, it cannot identify and warn those "sub-health" barrels with high-risk defects but no leakage, leading to safety hazards in the supply chain; on the other hand, it lacks scientific assessment of the remaining service life and repairability of the barrel body, which may cause some barrels with cosmetic flaws but still intact structure to be prematurely and unnecessarily retired and scrapped after professional repair. This not only causes waste of resources and additional purchase costs, but also increases the environmental pressure of solid waste disposal, hindering the realization of resource recycling goals.

[0004] The current traditional detection system seriously lacks a comprehensive evaluation mechanism for potential risk levels and resource recycling values. For the detection results, usually only simple disposal or continued use decisions are made, lacking fine classification disposal strategies, and the unidentifiable high-risk barrels continue to be used, which may cause safety accidents; while the misjudged or underutilized barrels mean premature end and waste of resources. Therefore, it is urgent to establish a scientific evaluation system based on safety risk levels and resource states, which is the basis for accurate classification management of loading barrels, so as to maximize resource utilization efficiency under the premise of absolute priority of safety, and promote the development of circular economy. SUMMARY

[0005] The purpose of the present application is to provide an intelligent sealing diagnosis device for hazardous chemical loading barrels to solve the problems raised in the background art.

[0006] To achieve the above object, the present application provides the following technical solution: a dangerous chemical container barrel intelligent sealing property diagnostic device, comprising a detection bin, a feeding port arranged at the front end of the detection bin, and a sealing door arranged at the upper end of the feeding port, wherein a groove is arranged at the bottom end of the inside of the detection bin, a center push rod is arranged at the center of the groove, and a jacking seat for supporting a barrel body is arranged at the upper end of the center push rod; a plurality of synchronously operated extrusion push rods are arranged on the inner wall of the detection bin in a circumferential direction, a clamping arc plate is arranged at the outer end of each extrusion push rod, and the clamping arc plate is used for radially clamping the barrel body; a plurality of first lifting rods are arranged on the upper end of the detection bin in a rectangular array, and a top plate is jointly hinged at the upper end of each first lifting rod; an open slot is arranged at the lower end of the top plate, a center disc is arranged at the center of the open slot, and a second lifting rod and an industrial camera are arranged at the lower end of the center disc; two differential pressure sensors are symmetrically arranged at the lower end of the center disc, a driven gear ring is arranged at the outer edge of the center disc, and two laser gas sensors are symmetrically arranged at the lower surface of the driven gear ring; a driving gear is meshingly connected in the open slot, and a driving device for driving the driving gear is arranged at the upper end of the top plate. The device is configured to perform multimodal collaborative detection: monitoring the pressure change of the sealing cavity through the differential pressure sensor, scanning the barrel opening escaping gas through the laser gas sensor, capturing the barrel surface defects through the industrial camera, and correlating and analyzing the leakage risk and structural damage.

[0007] The present application realizes the correlation diagnosis of sealing failure and structural damage through the multimodal collaborative detection architecture, and overcomes the limitations of traditional single leakage detection; the rotation type laser gas sensor scans the whole circumference of the barrel opening joint, combined with the radial constraint environment formed by the clamping arc plate, which significantly improves the micro-leakage detection rate; the spatiotemporal synchronization of the industrial camera and the pressure / gas sensor provides a data basis for predictive maintenance.

[0008] According to the optimization of the above technical solution, a plurality of sealing clamping grooves are arranged at the upper end of the detection bin, and a sealing clamping block matched with the sealing clamping grooves is arranged at the lower end of the top plate; when the first lifting rod is lowered to the detection position, the sealing clamping block is embedded in the sealing clamping groove to form an airtight locking structure. Here, the hard sealing structure of the sealing clamping block-clamping groove is automatically locked when the top plate is lowered, eliminating the risk of air leakage caused by aging of traditional rubber sealing elements; the contact sealing of metal to metal significantly improves the pressure bearing capacity of the detection cavity, which can ensure the stability of high pressure difference detection; at the same time, the maintenance frequency is reduced, and the long-term operation cost is reduced.

[0009] According to the optimization of the above technical scheme, a plurality of installation grooves are opened in the inner wall of the detection bin, and each extrusion push rod is arranged in the installation groove; the extrusion push rod is configured to apply pressure in stages: the first stage centers the barrel body, and the second stage applies a preset radial pressure to simulate the transportation working condition. Here, a staged pressure application mechanism is adopted to solve the detection distortion problem caused by barrel body deflection; the installation groove constrains the stroke of the extrusion push rod, so that the radial pressure of 15-30 N / cm² accurately simulates the real transportation vibration load, exposes potential fatigue cracks, and can early warn of structural leakage risk.

[0010] According to the optimization of the above technical scheme, acoustic components are symmetrically installed on both sides of each installation groove; the acoustic components are configured to collect acoustic emission signals of the barrel body during the pressurization process, and are time-series associated with the differential pressure sensor data to identify micro leakage sources. Through the time-series association of the acoustic emission signals and the differential pressure data, a 0.1 mm level micro leakage source can be identified within 5 seconds of pressure change, and the sensitivity is improved by two orders of magnitude compared with the traditional bubble method; the symmetric layout of the acoustic components realizes triangular positioning of the leakage point, with an error range of ≤5 cm, providing coordinate guidance for accurate repair.

[0011] According to the optimization of the above technical scheme, the acoustic components include a mounting plate, a protective shell, a microphone, a sealing plate, and a sound passing hole; the mounting plate is fixed to the inner wall of the detection bin, the microphone is arranged in the protective shell, and the sealing plate is provided with the sound passing hole; the aperture distribution of the sound passing hole is optimized to attenuate environmental noise of a specific frequency band and enhance the leakage acoustic fingerprint feature. Here, the sound passing hole array with optimized aperture can attenuate mechanical noise below 300 Hz and electromagnetic interference above 8 kHz, so that the signal-to-noise ratio of the 20 Hz-2 kHz leakage acoustic fingerprint is improved by 15 dB; the acoustic damping material filled in the protective shell further isolates external vibration, ensuring that the microphone captures pure stress wave signals.

[0012] According to the optimization of the above technical scheme, a plurality of driven push rods are arranged in the circumferential array in the groove, and the driven push rods move synchronously with the jacking seat; the central push rod and the driven push rods constitute a barrel bottom multi-point jacking system to ensure that the barrel body is not tilted during vertical lifting. The multi-point jacking system eliminates the eccentric load risk of single-point lifting, and the verticality deviation of the barrel body is controlled to be ≤0.5°, which can avoid the detection failure of the sealing surface caused by tilting; the synchronous extension and contraction structure of the driven push rods makes the 200 kg barrel body lifting process free of impact vibration, protecting the fragile area of the barrel bottom.

[0013] According to the optimization of the above technical scheme, a control platform is installed outside the detection bin; the control platform is configured to: calculate the structural weak area according to the barrel surface wear depth distribution map captured by the industrial camera; generate a leakage probability index in combination with the differential pressure decay rate and the laser gas concentration gradient; The fusion acoustic emission characteristic frequency and the position of the structural weak area are fused, and a barrel safety level and resource recycling suggestion are output.

[0014] The triple data fusion algorithm (structural weak area calculation + leakage probability index + safety level output) realizes the transition from raw data to decision suggestion; the resource recycling suggestion module quantitatively evaluates the repair economy, reduces the false scrap rate, and saves more than one million yuan of procurement cost of dangerous chemical barrels per year.

[0015] According to the optimization of the above technical scheme, the driving device is configured to control the main gear to rotate at a divided speed: The low-speed mode drives the laser gas sensor to scan the sealing surface of the barrel opening; The high-speed mode drives the driven gear ring to centrifugally shake off and detach the attached pollutants.

[0016] Here, the detection efficiency and equipment maintenance are considered by the dual-speed driving mode: the low-speed mode ensures that the laser sensor has ≥120 sampling points per circle; and the centrifugal force generated by the high-speed mode can automatically remove most of the attached matter on the surface of the sensor, thereby maintaining the optical detection accuracy.

[0017] According to the optimization of the above technical scheme, the spatial layout of the differential pressure sensor and the laser gas sensor satisfies: When the barrel is lifted to the detection position, the differential pressure sensor probe vertically contacts the center of the barrel cover; The scanning path of the laser gas sensor covers the complete circumference of the joint seam between the barrel cover and the barrel body.

[0018] The sensor spatial collaborative layout here enables the differential pressure probe to accurately contact the center pressure-bearing area of the barrel cover, and the axial deviation between the laser scanning path and the joint seam is ≤0.3 mm, thereby eliminating the blind area problem of traditional manual positioning and improving the detection coverage.

[0019] According to the optimization of the above technical scheme, the diagnostic logic in the device includes the following time sequence control steps: S1, barrel positioning and sealed environment construction: The center push rod and the driven push rod cooperatively lift the lifting seat to vertically push the barrel into the preset height of the detection bin; the extrusion push rod has two-stage actions: The first stage drives the clamping arc plate to radially contract at a contact pressure of ≤5 N / cm², so as to realize automatic centering of the barrel; The second stage applies a continuous radial load at a simulated transportation pressure of 15-30 N / cm²; The first lifting rod lowers the top plate to the detection position, and the sealing block is embedded into the sealing slot to form a metal hard seal; S2, static sealing property benchmark detection: The second lifting rod presses down the differential pressure sensor, so that the probe thereof vertically contacts the center of the cover and establishes a closed air cavity; the differential pressure sensor records an initial pressure value P0, maintains a constant pressure state T1, and monitors a pressure decay rate ΔP / Δt; the driving device starts a low-speed mode, the driving gear drives the driven gear ring to rotate, the laser gas sensor scans along the circumference of the cover-body joint seam, and a gas concentration distribution map is generated; S3, dynamic stress loading and defect capture: The extrusion push rod switches to an alternating pressure mode: pressure is cyclically applied in a 10-25 N / cm² range at a frequency of 1 Hz, simulating a transportation vibration working condition; an acoustic assembly synchronously collects a wideband acoustic emission signal under alternating pressure, and marks the positions of sound sources exceeding a threshold amplitude; an industrial camera performs high-speed continuous shooting when the barrel is subjected to alternating stress, and captures barrel wall deformation and surface micro-crack propagation; S4, spatiotemporal alignment of multi-source data and risk mapping: The control platform performs spatiotemporal synchronization: Align the differential pressure decay rate ΔP / Δt, the peak position of the gas concentration, and the timestamp of the acoustic emission event; Map the crack coordinates captured by the industrial camera to the three-dimensional model of the barrel, and superimpose the sound source positioning data; Construct a barrel risk thermodynamic map: the red area identifies the position where ΔP / Δt>5% / min and is accompanied by a gas concentration peak, and the yellow area identifies the area where there is a >0.5mm deep wear strip and the acoustic emission count rate is >10 times / second; S5, safety level decision and resource assessment: If ΔP / Δt≤2% / min, there is no gas concentration peak, the maximum wear depth is <0.2mm, and the acoustic emission count rate is <5 times / second, it is marked as Class A (safe reuse); If 2%<ΔP / Δt≤5% / min, the local gas concentration exceeds the threshold, there is a 0.2-1mm wear but no penetration of the wall thickness, and the acoustic emission count rate is 5-10 times / second, it is marked as Class B (downgraded use after repair), and the position coordinates that need to be reinforced are output; If ΔP / Δt>5% / min, the gas concentration continuously rises, the wear depth is ≥1mm or the acoustic emission energy is >100mV·ms, it is marked as Class C (forced scrap); Generate a resource reuse report: For Class B barrels, calculate the repair cost and residual life ratio; For Class C barrels, mark the recyclable material area.

[0020] The five-step timing control chain adopted by the application deeply couples safety detection and resource evaluation: the S1-S3 stage excites latent defects through alternating stress loading, capturing 32% more early damage than static detection; the three-dimensional risk thermodynamic map of S4 intuitively presents defect correlation; and the Class grading standard of S5 combines repair cost / life ratio to make resource reuse decisions scientific, reducing the amount of scrap while eliminating the risk of "sick use".

[0021] Compared with the prior art, the application has the following beneficial effects: 1. The device constructs a full-life-cycle failure feature library of the hazardous chemical barrel through four-dimensional fusion of a differential pressure sensor, a laser gas sensor, an acoustic array and an industrial camera, and the control platform uses a space-time alignment algorithm to dynamically correlate pressure decay rate, gas concentration gradient, acoustic emission event and surface deformation data, so that the potential leakage risk identification rate is greatly improved, the blind spot detection problem in traditional manual detection is solved, and the "sick operation" hidden danger of the device is eliminated.

[0022] 2. The application innovatively introduces the synergistic effect of gear-driven rotary scanning and multi-directional alternating stress loading: the laser sensor forms a continuous concentration thermodynamic map at the barrel joint, the synchronous extrusion push rod excites micro-leakage acoustic features in the stress valley period, and the differential pressure sensor automatically tracks the pressure abnormal area to enhance sampling. The actual measurement shows that this mechanism makes the circumferential defect detection rate reach 100%, the axial blind area is zero, and more early fatigue cracks are captured than static detection, which is an internationally pioneering dynamic failure warning scheme for hazardous chemical barrels.

[0023] 3. The decision system based on the Class grading engine deeply fuses the sealing index, structural damage data and acoustic emission activity, and outputs three types of disposal instructions: A-level safe reuse, B-level positioning repair and C-level directional recycling. Industrial application proves that this scheme reduces the annual scrap amount by 60%, significantly reduces the leakage accident rate, and achieves an annual cost reduction of more than 1 million yuan for a single production line, realizing the synchronous leap of safety zero accident and resource recycling rate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic diagram of the intelligent sealing diagnosis device for hazardous chemical storage barrel of the application; Figure 2 It is the internal structure schematic diagram of the top plate in the application; Figure 3 It is the internal structure schematic diagram of the detection bin in the application; Figure 4 It is the acoustic assembly structure schematic diagram in the application; Figure 5 It is the timing control flow chart of the diagnosis logic in the application.

[0025] In the figure: 1, detection bin; 2, first lifting rod; 3, top plate; 4, driving device; 5, sealing clamping groove; 6, extrusion push rod; 7, feeding port; 8, sealing door; 9, jacking seat; 10, control platform; 11, center push rod; 12, driven push rod; 13, groove; 14, open slot; 15, sealing clamping block; 16, center disc; 17, differential pressure sensor; 18, second lifting rod; 19, industrial camera; 20, laser gas sensor; 21, driven gear ring; 22, driving gear; 23, mounting groove; 24, clamping arc plate; 25, acoustic assembly; 2501, mounting plate; 2502, protective shell; 2503, microphone; 2504, sealing plate; 2505, sound passing hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0027] As Figures 1-4As shown, the dangerous chemical storage barrel intelligent sealing diagnosis device of the embodiment comprises a detection bin 1, a feeding port 7 is formed at the front end of the detection bin 1, a sealing door 8 is arranged at the upper end of the feeding port 7, the feeding port 7 is used for placing the storage barrel, after being placed into the inside of the detection bin 1, the sealing door 8 is controlled to close the feeding port 7, a groove 13 is formed at the inside bottom end of the detection bin 1, a center push rod 11 is installed at the inside center position of the groove 13, the center push rod 11 is an electric push rod, a jacking seat 9 is installed at the upper end of the center push rod 11, the center push rod 11 can drive the jacking seat 9 to move up and down, the jacking seat 9 is used for bearing the storage barrel, extrusion push rods 6 are installed on the inner walls of the detection bin 1, the extrusion push rods 6 are located at the upper positions of the detection bin 1, clamping arc plates 24 are installed at the outer ends of the plurality of extrusion push rods 6, the extrusion push rods 6 are electric push rods, can drive the clamping arc plates 24 to move towards the inside of the detection bin 1, the storage barrel is lifted by the jacking seat 9, until the center position of the storage barrel and the clamping arc plate 24 are in a horizontal position, the plurality of clamping arc plates 24 are driven to move towards the position of the storage barrel by the inward movement of the plurality of extrusion push rods 6, the position of the storage barrel is fixed by the plurality of clamping arc plates 24, it should be noted that pressure sensors are installed at the lower ends of the clamping arc plates 24, when the clamping arc plates 24 contact the storage barrel, the pressure sensors will transmit signals to a control platform 10 when detecting the storage barrel, and the movement of the extrusion push rods 6 and the clamping arc plates 24 is controlled by the control platform 10 to stop, a plurality of first lifting rods 2 are installed at the upper end of the detection bin 1 in a rectangular array, a top plate 3 is hingedly installed at the upper ends of the plurality of first lifting rods 2 in common, the plurality of first lifting rods 2 move synchronously, can drive the top plate 3 to move up and down, an open slot 14 is formed at the lower end of the top plate 3, a center disc 16 is installed at the center position of the open slot 14, a second lifting rod 18 is installed at the lower end of the center disc 16, an industrial camera 19 is installed at the lower end of the second lifting rod 18, the industrial camera 19 can be driven to move in a vertical direction by the second lifting rod 18, the sealing surface such as threads, gaskets and other visible defects can be recognized by the industrial camera 19, two differential pressure sensors 17 are symmetrically installed at the positions of the left and right sides of the second lifting rod 18 at the lower end of the center disc 16, the differential pressure sensors 17 can quickly identify whether there is a leakage trend in the barrel body by monitoring the pressure change in the detection cabin, provide a basic signal of “leakage trigger” for other sensors, only when the differential pressure sensors 17 detect an abnormal signal, the other sensors in the inside of the detection bin 1 will be started to further detect, to avoid invalid detection, a driven gear ring 21 is installed at the position inside the open slot 14 outside the center disc 16, two laser gas sensors 20 are symmetrically installed at the lower surfaces of the driven gear ring 21, the laser gas sensors 20 can accurately identify the leaked substances and locate the leakage points by detecting the composition and concentration of the leaked gas, solve the problems of “false alarm” and “missed detection”, a driving gear 22 is meshingly connected inside the open slot 14 outside the driven gear ring 21, a driving device 4 connected with the driving gear 22 is installed at the upper end of the top plate 3,The driving device 4 can drive the driving gear 22 to rotate, and the driving gear 22 can drive the driven gear ring 21 to rotate, and the driven gear ring 21 can drive the two laser gas sensors 20 to change positions, thereby covering most positions in the detection bin 1.

[0028] The detection bin 1 is provided with a plurality of sealing clamping grooves 5 at the upper end, and the top plate 3 is provided with sealing clamping blocks 15 matched with the sealing clamping grooves 5 at the lower end; when the first lifting rod 2 is lowered to the detection position, the sealing clamping blocks 15 are embedded in the sealing clamping grooves 5 to form an airtight locking structure. The sealing clamping blocks 15 and the sealing clamping grooves 5 are designed to be interlocked by a conical surface: the bottom of the clamping block is processed with a 15° guide slope, the side wall of the clamping groove is plated with a hard chromium layer (thickness ≥ 50 μm), and the metal surface is sealed by a 200 N pre-tightening force when closed; here, there is an air-tightness guarantee mechanism: a fluorine rubber sealing ring (compression rate 18±2%) is embedded in the clamping block, and a secondary soft sealing is formed with the bottom surface of the clamping groove, so that the leakage rate of the detection bin is less than 0.01% / min under a pressure of 0.5 MPa; at the same time, it also has a self-cleaning function: the clamping block scrapes the side wall of the clamping groove every time it is lifted and lowered, removing dust accumulation, which can avoid affecting the flatness of the sealing surface.

[0029] A plurality of installation grooves 23 are formed in the inner wall of the detection bin 1, and each extrusion push rod 6 is arranged in the installation groove 23; the extrusion push rod 6 is configured to apply pressure in stages: in the first stage, the barrel is centered and centered, and in the second stage, a preset radial pressure is applied to simulate the transportation working condition. The intelligent pressure strategy of the extrusion push rod 6 is as follows: First stage centering control: the push rod advances at a low speed of 0.5 mm / s, and the pressure sensor monitors the clamping force in real time; when the eccentricity of the barrel is greater than 3 mm, the push rod stroke difference is automatically adjusted; after reaching a contact pressure of 5 N / cm², it is maintained for 3 seconds to ensure that the axis of the barrel deviates from the center of the detection bin by not more than 1 mm.

[0030] Second stage working condition simulation: load a radial pressure of 15-30 N / cm² (classified according to the material of the barrel), and simultaneously superimpose a 1 Hz sine wave alternating load (amplitude ±5 N / cm²); a displacement limiter is arranged in the installation groove (23) to forcibly limit the maximum stroke error of the push rod to be less than 0.2 mm.

[0031] In the present application, the acoustic assembly 25 is symmetrically installed on both sides of each installation groove 23; the acoustic assembly 25 is configured to collect the acoustic emission signals of the barrel during the pressurization process, and is associated with the data timing of the differential pressure sensor 17 to identify the micro leakage source. The working logic of the acoustic assembly 25 here includes: signal synchronization mechanism: the differential pressure sensor 17 sends a clock pulse every 0.1 seconds, and the acoustic assembly starts 20 kHz sampling 5 ms after the pulse; leakage feature extraction: identify the burst acoustic emission signals (duration <100 μs) in the 30-80 kHz frequency band; when the time difference of signals captured by three adjacent acoustic assemblies is <200 μs, the control platform (10) calculates the coordinates of the leakage point by the time difference positioning algorithm (TDOA).

[0032] The acoustic assembly 25 includes a mounting plate 2501, a protective shell 2502, a microphone 2503, a sealing plate 2504, and a sound hole 2505; the mounting plate 2501 is fixed to the inner wall of the detection chamber 1, the microphone 2503 is arranged in the protective shell 2502, and the sealing plate 2504 is provided with the sound hole 2505; the aperture distribution of the sound hole 2505 is optimized to attenuate the environmental noise of a specific frequency band and enhance the leakage soundprint feature. The acoustic filtering characteristics of the sound hole 2505 here are as follows: the aperture adopts a gradient distribution (Φ0.8 mm / Φ1.2 mm / Φ1.6 mm three groups), corresponding to the attenuation of the following frequency bands: The vibration isolation design of the microphone 2503 is that the protective shell 2502 is filled with silicon-based sound-absorbing cotton (density 80 kg / m³), and the external vibration transmission loss is >90%.

[0033] In the present application, a plurality of driven push rods 12 are arranged in the circumferential groove 13, and the driven push rods 12 move synchronously with the jacking seat 9; the center push rod 11 and the driven push rod 12 constitute a barrel bottom multi-point jacking system, which ensures that the barrel does not tilt during vertical lifting. The synchronization system of the driven push rod 12 here includes: Mechanical synchronization architecture: the center push rod 11 drives three groups of driven push rods 12 through a bevel gear set, and the gear meshing gap is <0.05 mm; Dynamic balance monitoring: an inclination sensor (range ±5°) is installed at the bottom of the jacking seat 9, and the push rod differential compensation is triggered when the inclination is >0.3°; Safety protection: automatic pressure relief when the load of a single push rod is >120% of the rated value, preventing barrel bottom deformation.

[0034] It should be further pointed out that the control platform 10 is installed outside the detection chamber 1; the control platform 10 is configured to: According to the barrel surface wear depth distribution map captured by the industrial camera 19, calculate the structural weak area; Combined with the differential pressure decay rate and the laser gas concentration gradient, generate a leakage probability index; The fusion acoustic emission characteristic frequency and the position of the structural weak area are fused, and the barrel safety level and resource recycling suggestions are output.

[0035] The driving device 4 is configured to control the main gear 22 to rotate at a speed: The low-speed mode drives the laser gas sensor 20 to scan the barrel opening sealing surface; The high-speed mode drives the driven gear ring 21 to centrifugally shake off the attached pollutants.

[0036] The switching logic of the driving device 4 here is: Low-speed scanning mode (≤2rpm): the servo motor adopts position control (encoder resolution 0.001°), ensuring that the sampling points per turn = 360 / θ (θ is the angular resolution of the laser); High-speed cleaning mode (≥200rpm): continuous rotation for 30 seconds generates centrifugal acceleration a=ω²r (ω is the angular velocity, and r is the distance from the sensor centroid), and the minimum a value required to remove the attached matter is calculated: Automatic activation condition: the light transmittance of the laser sensor is less than 80%.

[0037] In the application, the spatial layout of the differential pressure sensor 17 and the laser gas sensor 20 also meets: When the barrel is lifted to the detection position, the probe of the differential pressure sensor 17 vertically contacts the center of the barrel cover; The scanning path of the laser gas sensor 20 covers the complete circumference of the joint between the barrel cover and the barrel body.

[0038] The use method of the device is as follows: the loading barrel is placed into the inside of the detection bin 1 through the feeding port 7, the top plate 3 and the sealing door 8 are closed, the height of the loading barrel is lifted through the lifting seat 9, the clamping arc plates 24 are driven to approach the loading barrel through the plurality of extrusion push rods 6, and finally the fixing of the loading barrel is completed through the plurality of clamping arc plates 24, the sealing detection of the loading barrel is performed through the acoustic assembly 25, the differential pressure sensor 17, the industrial camera 19 and the laser gas sensor 20 arranged in the inside of the detection bin 1, and the plurality of circuit instruments in the inside of the detection bin 1 can be intelligently controlled in advance through the control platform 10.

[0039] Referring to Figure 5 It should be further pointed out that the diagnostic logic in the device includes the following time sequence control steps: S1, barrel positioning and sealing environment construction: The center push rod 11 and the driven push rod 12 cooperatively lift the lifting seat 9, vertically push the barrel into the preset height of the detection bin 1, and the extrusion push rod 6 has two-stage action: The first stage drives the clamping arc plate 24 to radially contract at a contact pressure ≤5N / cm², so as to realize automatic centering of the barrel; The second stage applies a constant radial load at a simulated transport pressure of 15-30 N / cm²; The first lifting rod 2 lowers the top plate 3 to the detection position, and the sealing block 15 is embedded in the sealing groove 5 to form a metal hard seal; S2, static sealing property benchmark detection: The second lifting rod 18 presses down the differential pressure sensor 17, so that the probe thereof vertically contacts the center of the cover and establishes a closed air cavity; the differential pressure sensor 17 records an initial pressure value P0, maintains a constant pressure state T1 (60±5 seconds), and monitors the pressure decay rate ΔP / Δt; the driving device 4 starts a low-speed mode (≤2 rpm), the driving gear 22 drives the driven gear ring 21 to rotate, the laser gas sensor 20 scans along the circumference of the cover-body joint seam, and a gas concentration distribution map is generated; S3, dynamic stress loading and defect capture: The extrusion push rod 6 switches to an alternating pressure mode: cyclically applies pressure in the range of 10-25 N / cm² at a frequency of 1 Hz, simulating the transport vibration working condition; the acoustic assembly 25 synchronously collects wideband acoustic emission signals (20 Hz-20 kHz) under alternating pressure, and marks the acoustic source positions exceeding the threshold amplitude; the industrial camera 19 performs high-speed continuous shooting (≥30 fps) when the barrel is subjected to alternating stress, and captures barrel wall deformation and surface micro-crack propagation; S4, multi-source data space-time alignment and risk mapping: The control platform 10 performs space-time synchronization: Align the differential pressure decay rate ΔP / Δt, the gas concentration peak position, and the timestamp of the acoustic emission event; Map the crack coordinates captured by the industrial camera 19 to the barrel three-dimensional model, and superimpose the acoustic source positioning data; Construct a barrel risk heat map: the red area identifies the position where ΔP / Δt>5% / min and accompanied by a gas concentration peak, and the yellow area identifies the area where there is a >0.5 mm deep wear strip and the acoustic emission count rate is >10 times / second; S5, safety level decision and resource assessment: If ΔP / Δt≤2% / min, there is no gas concentration peak, the maximum wear depth is <0.2 mm, and the acoustic emission count rate is <5 times / second, it is marked as Class A (safe reuse); If 2%<ΔP / Δt≤5% / min, the local gas concentration exceeds the threshold, there is a 0.2-1 mm wear but not penetrating the wall thickness, and the acoustic emission count rate is 5-10 times / second, it is marked as Class B (downgraded use after repair), and the position coordinates that need to be reinforced are output; If ΔP / Δt>5% / min, the gas concentration continuously rises, the wear depth is ≥1 mm, or the acoustic emission energy is >100 mV·ms, it is marked as Class C (forced scrap); Generate a resource reutilization report: For Class B barrels, calculate the repair cost to residual life ratio. For Class C barrels, mark recyclable material areas (based on barrel material classification).

[0040] The intelligent sealing diagnosis device for the hazardous chemical storage barrel of the present application reconstructs the technical paradigm of safety evaluation of hazardous containers through multi-modal sensing fusion and dynamic collaborative control mechanism. The core innovation lies in the construction of a closed-loop system of "mechanical constraint-dynamic excitation-holographic perception-intelligent decision": a high-stability detection environment is formed by the metal hard sealing structure and the multi-point anti-tilting lifting mechanism; hidden defects are excited by gear-driven rotary scanning and alternating stress loading; four-dimensional sensing network is used to synchronously capture pressure attenuation, gas dispersion, acoustic emission and visual deformation characteristics; finally, the data fusion engine is used to realize leakage risk positioning, structure damage quantification and resource value classification. This scheme upgrades the traditional passive leakage detection to active predictive safety protection, eliminates the detection blind area, establishes a deep coupling between sealing diagnosis and circular economy decision-making, and provides technical support throughout the whole life cycle for the safety of hazardous chemical storage and transportation.

[0041] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or replace some technical features with equivalent ones. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A smart sealing test device for hazardous chemical container drums, comprising a test chamber (1), an inlet (7) located at the front end of the test chamber (1), and a sealing door (8) located above the inlet (7), characterized in that, The bottom of the testing chamber (1) has a groove (13) and a center push rod (11) is installed in the center of the groove (13). A lifting seat (9) for supporting the barrel is installed on the upper end of the center push rod (11). Multiple synchronously operating extrusion push rods (6) are installed circumferentially on the inner wall of the testing chamber (1). A clamping arc plate (24) is installed on the outer end of each extrusion push rod (6) for radially clamping the barrel. Multiple first lifting rods (2) are installed in a rectangular array on the upper end of the testing chamber (1). The upper ends of each first lifting rod (2) are hinged to the top plate (3). The lower end of the top plate (3) has an opening. A slot (14) is provided, a central plate (16) is installed in the center of the slot (14), a second lifting rod (18) and an industrial camera (19) are installed at the lower end of the central plate (16); two differential pressure sensors (17) are symmetrically installed at the lower end of the central plate (16), a driven gear ring (21) is installed on the outer edge of the central plate (16), and two laser gas sensors (20) are symmetrically installed on the lower surface of the driven gear ring (21); a drive gear (22) is meshed in the slot (14), and a drive device (4) for driving the drive gear (22) is installed at the upper end of the top plate (3); The device is configured to perform multimodal collaborative detection: monitoring the pressure change of the sealed cavity by a differential pressure sensor (17), scanning the gas escaping from the barrel opening by a laser gas sensor (20), capturing surface defects of the barrel by an industrial camera (19), and correlating and analyzing leakage risk with structural damage.

2. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The upper end of the detection chamber (1) has multiple sealing slots (5), and the lower end of the top plate (3) is equipped with a sealing block (15) that is compatible with the sealing slots (5); when the first lifting rod (2) descends to the detection position, the sealing block (15) is embedded in the sealing slot (5) to form an airtight locking structure.

3. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The inner wall of the testing chamber (1) has multiple mounting slots (23), and each extrusion push rod (6) is respectively installed in the mounting slot (23); the extrusion push rod (6) is configured to apply pressure in stages: in the first stage, the barrel is centered and aligned, and in the second stage, a preset radial pressure is applied to simulate the transportation conditions.

4. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 3, characterized in that, Acoustic components (25) are symmetrically installed on both sides of each mounting slot (23); the acoustic components (25) are configured to collect acoustic emission signals of the barrel during the pressurization process and correlate them with the data of the differential pressure sensor (17) in time sequence to identify micro-leakage sources.

5. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 4, characterized in that, The acoustic component (25) includes a mounting plate (2501), a protective shell (2502), a microphone (2503), a sealing plate (2504), and a sound passage (2505). The mounting plate (2501) is fixed to the inner wall of the detection chamber (1), the microphone (2503) is installed inside the protective shell (2502), and the sound passage (2505) is opened on the sealing plate (2504). The aperture distribution of the sound passage (2505) is optimized to attenuate environmental noise in a specific frequency band and enhance the leakage sound pattern characteristics.

6. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The groove (13) has a circumferential array of multiple driven push rods (12), which move synchronously with the lifting seat (9); the central push rod (11) and the driven push rods (12) form a multi-point lifting system for the bottom of the bucket, ensuring that the bucket does not tilt during vertical lifting.

7. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The detection chamber (1) is externally equipped with a control platform (10); the control platform (10) is configured as follows: Based on the wear depth distribution map of the barrel surface captured by the industrial camera (19), the weak area of ​​the structure is calculated; By combining the differential pressure attenuation rate with the laser gas concentration gradient, a leakage probability index is generated. By integrating the characteristic frequencies of acoustic emission with the location of structural weak points, the safety level of the barrel and recommendations for resource reuse are provided.

8. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The drive unit (4) is configured to control the rotation of the drive gear (22) at a specific speed: The low-speed mode drives the laser gas sensor (20) to scan the sealing surface of the barrel opening; High-speed mode drives the driven toothed ring (21) to centrifuge and detach the attached pollutants.

9. The intelligent sealing performance diagnostic device for hazardous chemical container drums according to claim 1, characterized in that, The spatial arrangement of the differential pressure sensor (17) and the laser gas sensor (20) satisfies: When the barrel is lifted to the detection position, the probe of the differential pressure sensor (17) makes vertical contact with the center of the barrel lid; The laser gas sensor (20) scans a path that covers the entire circumference of the joint between the lid and the body of the barrel.

10. The apparatus according to any one of claims 1-9, characterized in that, The diagnostic logic within the device includes the following timing control steps: S1. Barrel positioning and sealing environment construction: The central push rod (11) and the driven push rod (12) work together to lift the lifting seat (9), pushing the barrel vertically into the preset height of the testing chamber (1); the extrusion push rod (6) operates in two stages: In the first stage, the clamping arc plate (24) is driven to retract radially with a contact pressure of ≤5N / cm² to achieve automatic centering of the barrel. The second stage applies a continuous radial load with a simulated transport pressure of 15-30 N / cm². The first lifting rod (2) lowers the top plate (3) to the detection position, and the sealing block (15) is embedded in the sealing groove (5) to form a metal hard seal; S2. Static sealing performance benchmark test: The second lifting rod (18) presses down the differential pressure sensor (17) so that its probe makes vertical contact with the center of the barrel lid and establishes a closed gas chamber; the differential pressure sensor (17) records the initial pressure value P0, maintains a constant pressure state T1, and monitors the pressure decay rate ΔP / Δt; the drive device (4) starts the low speed mode, the active gear (22) drives the driven gear ring (21) to rotate, and the laser gas sensor (20) scans along the circumference of the barrel lid-barrel joint seam to generate a gas concentration distribution map; S3. Dynamic Stress Loading and Defect Capture: The extrusion push rod (6) switches to alternating pressure mode: it applies pressure cyclically in the range of 10-25 N / cm² at a frequency of 1 Hz to simulate transportation vibration conditions; the acoustic component (25) synchronously collects broadband acoustic emission signals under alternating pressure and marks the location of sound sources exceeding the threshold amplitude; the industrial camera (19) performs high-speed continuous shooting when the barrel is subjected to alternating stress to capture barrel wall deformation and surface microcrack propagation; S4. Spatiotemporal alignment and risk mapping of multi-source data: Control platform (10) performs spatiotemporal synchronization: Align the differential pressure attenuation rate ΔP / Δt and the peak position of the gas concentration with the timestamp of the acoustic emission event; The crack coordinates captured by the industrial camera (19) are mapped onto the three-dimensional model of the barrel, and the sound source localization data is superimposed. Construct a risk heat map for the barrel: red areas indicate locations where ΔP / Δt > 5% / min and is accompanied by gas concentration peaks, and yellow areas indicate areas with wear zones > 0.5mm deep and acoustic emission count rates > 10 times / second; S5. Security Level Decision and Resource Assessment: If ΔP / Δt ≤ 2% / min, there is no gas concentration peak, the maximum wear depth is < 0.2 mm, and the acoustic emission count rate is < 5 times / second, it is marked as Class A; If 2% < ΔP / Δt ≤ 5% / min, local gas concentration exceeds the threshold, there is 0.2-1mm wear but it does not penetrate the wall thickness, and the acoustic emission count rate is 5-10 times / second, it is marked as Class B, and the coordinates of the location that needs reinforcement are output. If ΔP / Δt > 5% / min, gas concentration continues to rise, wear depth ≥ 1mm, or acoustic emission energy > 100mV·ms, it is marked as Class C; Generate a resource reuse report: For Class B barrels, calculate the ratio of repair cost to remaining lifespan; For Class C containers, mark the area for recyclable materials.

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