63 results about "X-ray" patented technology

The invention discloses an X-ray detection device and method for detecting a PCB, and the device comprises a housing, and an X-ray emission source transmission system, an X-ray detector transmission system and a PCB conveying system which are disposed in the housing. The X-ray emission source transmission system is high in X-ray emission source transmission speed, high in precision and small in vibration quantity, the X-ray detector transmission system is high in X-ray detector transmission speed, high in precision and small in vibration quantity, the PCB conveying system can automatically input and output PCBs, the height of the PCBs can be automatically adjusted, and the PCB conveying efficiency is improved. The PCB conveying system can adapt to PCBs with different width sizes, and can be prevented from blocking X rays.

The invention relates to the technical field of PCB (Printed Circuit Board) blind hole defect detection, and discloses an X-ray-based PCB blind hole defect detection method, which comprises the following steps of: irradiating a PCB by using X rays, performing data acquisition by using CT (Computed Tomography) projection, establishing an initial image, reconstructing the initial image by using filtered back projection to obtain a reconstructed image, and detecting the blind hole defect of the PCB according to the reconstructed image. According to the blind hole defect detection method based on the deep residual network, through the double-flow neural network architecture constructed on the basis of the deep residual network, geometric features and material features are comprehensively utilized, the blind hole defect detection accuracy is improved, the blind hole defect detection accuracy is improved, and the blind hole defect detection accuracy is improved. The PCB blind hole defect detection device can comprehensively and accurately detect and classify various defects of PCB blind holes, such as cracks, wrinkles, recesses and filling holes, improves the efficiency and accuracy of defect detection, is helpful for timely finding quality problems in the PCB production process, and guarantees the product quality.

The invention provides an esophageal stenosis dilatation balloon which comprises a dilatation tube mechanism, and a guide-in assembly and a suction tube are arranged in the dilatation tube mechanism; the balloon main body is arranged on the outer surface wall of the expansion tube mechanism, the balloon main body is communicated with the guide-in assembly, a contrast agent can be injected through the injection device to expand the balloon main body, the expansion diameter is matched with the injection pressure, repeated suction can be carried out to gradually expand the balloon main body to a target diameter, and marking lines visible under X rays are arranged at the two ends of the balloon main body. The invention relates to the technical field of medical instruments, in particular to a balloon which is convenient for real-time observation of dilatation during operation and capable of accurately controlling the dilatation diameter of a balloon main body by injecting a contrast agent and utilizing the matching relation between the contrast agent and pressure, avoiding blind operation and improving safety. Suction and injection can be repeatedly carried out, and progressive and controllable expansion is achieved.

The invention relates to the technical field of position calibration, and provides a position calibration improved structure of an X fluorescence spectrometer, which comprises a spectrometer box, the bottom of the spectrometer box is fixedly connected with a base, the top of the spectrometer box is provided with a spectrum cavity, the outer surface of the spectrum cavity is provided with a visual sensor, and the visual sensor is connected with the base. Arc-shaped rails are symmetrically arranged on the two sides of the spectrometer box, the outer surfaces of the arc-shaped rails are slidably connected with isolation hoods, a sliding-out groove is formed in the bottom of the spectrum cavity, and a side groove is further formed in the inner wall of the spectrum cavity; the positioning unit is arranged at the bottom of the spectrum cavity and used for adjusting the position, the excitation unit is located above the positioning unit and emits X fluorescence, a material needing qualitative and quantitative treatment is put into the positioning unit, the positioning unit can drive the material to move to the position under the excitation unit, and the sample is bombarded by X rays to excite characteristic fluorescence; and non-destructive detection of qualitative and quantitative analysis of elements is realized.

The utility model discloses an iron ore value analysis device which comprises a grade analyzer which comprises a gun head and a handle, and the gun head is fixed at the upper end of the handle; the first protection assembly comprises first fixing plates, a first connecting shaft, a first torsional spring, a first protection plate and a limiting column, the first fixing plates are fixed to the middle of the lower surface of the gun head and located on the side edge of the top of the handle, the first connecting shaft is fixed between the first fixing plates, and the first torsional spring is connected to the first connecting shaft in a sleeving mode; one end of the limiting column is fixed to the lower end of the side edge of the first protection plate, and the other end of the limiting column is attached to the handle. The utility model relates to an iron ore grade analyzer, and aims to solve the problem that when the iron ore grade analyzer is used, an operator holds a handle, presses a button and starts an X-ray, and the X-ray is a radiation source, so that the risk of radiation exposure to the operator and the surrounding environment is possibly caused if the X-ray is emitted due to misoperation.

The application discloses a force-ultraviolet-X ray three-mode excited doped organic room-temperature phosphorescent material and a preparation method and application thereof. The doped organic room-temperature phosphorescent material comprises a guest compound and a host compound, and the host compound comprises halogenated benzophenone or unsubstituted benzophenone. The doped organic room-temperature phosphorescent material provided by the application can generate stable phosphorescent emission under external force stimulation, ultraviolet light and X ray excitation. Moreover, the preparation method is simple, the cost is low, the excitation mode is various, and the doped organic room-temperature phosphorescent material can emit light in the condition of no light source. The doped organic room-temperature phosphorescent material provided by the application adopts pure organic material, is not doped with metal, the structure is convenient to modify, is more green and economical, and is more in line with the development trend of green chemistry. The material can be used in the field of force-induced light emission and can be applied to the field of X ray imaging.

The invention discloses a portable high-power ray source, which belongs to the technical field of X-rays, and comprises a power supply, an MCU (Microprogrammed Control Unit) control system, an inverter circuit and a high-voltage generator, the power supply comprises a storage battery and a super capacitor bank, and the MCU control system is respectively connected with the storage battery, the super capacitor bank, the inverter circuit and the high-voltage generator. The storage battery and the super capacitor are connected in series to transmit low-voltage large current to the inverter circuit, the inverter circuit converts the received low-voltage large current into high-voltage low current under the control of the MCU control system and transmits the high-voltage low current to the high-voltage generator, and the high-voltage generator outputs high-power X-rays under the control of the MCU control system. The device has higher transmitting power, equipment operation is more stable, and the service life of the storage battery is longer.

The application discloses a cable sheath aging evaluation method and related device, comprising: intercepting a test sample from a cable sheath to be evaluated, wiping the test sample with alcohol and keeping it still; testing the test sample by using a RIGAKU-X ray polycrystalline diffractometer, recording an X ray diffraction pattern of the test sample, obtaining two crystalline diffraction peak intensities D fi and D si of a diffraction curve and angles θ fi and θ si corresponding to the two peaks according to the X ray diffraction pattern; substituting the two crystalline diffraction peak intensities D fi and D si and the angles θ fi and θ si corresponding to the two peaks into a diffraction evaluation factor calculation formula to obtain a diffraction evaluation factor; and analyzing an aging state of the cable sheath to be evaluated based on the diffraction evaluation factor. The application can conveniently, efficiently and safely detect and evaluate the aging degree of a 110kV XLPE cable sheath, and avoids damage and grounding faults caused by serious aging of the cable sheath.

An X-ray imaging apparatus 100 comprises an X-ray imaging unit 3 including an X-ray irradiation unit 31 that irradiates X-rays and an X-ray detection unit 32 that detects X rays; a tabletop unit 1 on which a subject 9 is placed and which is movable relative to the X-ray imaging unit 3; a tabletop unit-installed part 2 that is provided on the tabletop unit 1 and includes a material with a lower X-ray transmittance than a portion of the tabletop unit 1 where the subject 9 is placed; a notification unit 6; and a control unit 5 that performs control to cause the notification unit 6 to provide a notification that the tabletop unit-installed part 2 is interfering with an irradiation field, based on irradiation field range information related to a range of an irradiation field of X-rays irradiated from the X-ray irradiation unit 31 and member position information related to a position of the tabletop unit-installed part 2.

The utility model relates to cone shaped beam X ray source technical field discloses a cone shaped beam X ray source filament heating circuit, can obtain stable X ray output, have certain anti -interference ability, can guarantee under high frequency can work normally, including core control module, main control signal input circuit, enable control circuit, drive and power switch module, feedback and current sampling module, filament output and switching module, power supply circuit, relay FK2 and relay FK3, core control module is connected with main control signal input circuit, drive and power switch module respectively, power supply circuit is connected with enable control circuit, filament output and switching module, drive and power switch module respectively, drive and power switch module connect feedback and current sampling module, filament output and switching module, and enable control circuit connects control main control signal input circuit, and enable control circuit passes through relay FK2 and relay FK3 control connection main control signal input circuit.

The utility model discloses a device for testing the focus of an X-ray bulb tube, which comprises a support base and a test support, the test support is fixed on the support base, the height and the angle of the test support can be adjusted, a dental film base is arranged on the test support, a handle is arranged on the dental film base, and the test support is fixed on the support base. A height fixing knob is arranged on one side of the test bracket; the slit camera is placed on an X-ray path; the dental film is positioned on the dental film base; a computer; the X-ray image processing system has the advantages that by means of optimized hardware design and advanced software control, the aims of being efficient, accurate, easy to use, high in adaptability and high in cost effectiveness are achieved, and the X-ray image processing system has wide application prospects and market value.

The invention discloses a lightweight gamma ray and X ray shielding material and a preparation method thereof, and belongs to the technical field of ray protection materials. The invention aims to solve the problems that in the prior art, Bi2O3 and Gd2O3 cannot have a synergistic effect, the compatibility of Bi2O3 and Gd2O3 with an organic matrix cannot be improved, and a ray shielding material with light weight, broadband efficient shielding and excellent mechanical properties is difficult to prepare. The shielding material is formed by compounding a base material and a functional filler, and the functional filler is a Bi2O3 and Gd2O3 composite protective particle. The method comprises the following steps: 1, preparing Bi2O3 and Gd2O3 composite protective particles; and 2, preparing the shielding material. The invention is used for the lightweight gamma ray and X ray shielding material and the preparation thereof.

The utility model discloses a pinhole detector for detecting material stress change, which relates to the technical field of material stress detection and comprises a shell and a cover plate, a mainboard, a TFT (thin film transistor) board and a read-write board are arranged in the shell, the mainboard is in signal connection with the TFT board and the read-write board, the TFT board is used for converting X-rays into analog electric signals, and the TFT board is used for converting X-rays into analog electric signals. The read-write board is used for converting an analog signal into a digital signal; the cover plate is arranged on the shell, the cover plate is provided with a placement area, after the cover plate is installed on the shell, the placement area is located over the TFT plate, a through hole is formed in the middle of the placement area, and the through hole is used for X-rays to penetrate through a product to be tested to form diffraction and then pass through so that the rays can be distributed on the TFT plate. According to the small hole detector for detecting the stress change of the material, through the through hole formed in the placement area, it is guaranteed that X rays penetrate through the product to be tested and then directly hit on a TFT plate, product imaging is clearer, slight change can be found more easily, and the stress detection precision and the imaging definition can be improved.

The invention discloses a standard CT value calculation method and detection system based on ray transmission intensity, and the method comprises the following steps: S1, transmitting an X ray, and obtaining an incident intensity value Ic and a transmission intensity value Ix of the X ray to a scanned object; s2, an incidence correction value I0 of the incidence intensity value Ic is calculated according to a correction factor Nk, and the correction factor Nk is a correction factor of the intensity meter; s3, calculating a transmission correction value I of the transmission intensity value Ix according to the correction factor Nk; and S4, calculating a standard reference CT value CTs according to the I0 and the I. The detection system comprises a memory, an emission unit, a first calculation unit, a second calculation unit, a third calculation unit, a scanning object and an intensity meter. Compared with the prior art, the calculation method of the reference CT value is established based on the X-ray transmission intensity theory, and a relatively accurate CT value detection result of the CT machine is calculated by adopting a certain mathematical processing method. And secondly, the automation degree is high.

The invention discloses a method for detecting grinding burns on the surface of a BG801 steel bearing ring based on X rays, and belongs to the technical field of nondestructive testing of materials. The method solves the problem that according to an existing acid corrosion detection BG801 steel bearing ring grinding burn technology, whether a grinding burn layer is removed in follow-up finish machining or not cannot be judged, so that grinding burn workpieces which can be removed in the follow-up finish machining are scrapped in advance, and waste is caused. The method comprises the following steps: grinding burn acid corrosion detection; after the bearing ring with burns is subjected to subsequent coarse grinding, fine grinding and super-fine grinding, an X-ray retained austenite tester is adopted to carry out nondestructive testing on an original grinding burn area of the bearing ring, if the content of retained austenite is lower than 6%, it is determined that an original grinding burn layer of the bearing ring is removed, and the bearing ring becomes a qualified product. According to the method, a part of the original grinding burn detection method through acid corrosion can be identified as scrapped products and converted into qualified products, and a part of economic loss is retrieved.

The invention relates to the technical field of stress detection, in particular to a goniometer for X-ray stress detection of a large part and a stress detection device of the goniometer. The rotation precision of an X-ray tube and a detector on the goniometer on the arc-shaped mounting plate reaches a micron level or even higher, namely the precision of the goniometer is determined by the corresponding arc-shaped grating ruler. In cooperation with a stress detection structure of the goniometer, all stress detection processes can be completed without moving large parts. The invention provides an ultra-high-precision goniometer for immovable large parts. In cooperation with an arc-shaped guide rail and a rotary motor, the whole stress detection device can complete stress measurement under the condition that a workpiece is not moved, and the measurement precision can reach a micron level or even a higher level. The X-ray stress detector solves the problem that the existing X-ray stress detector can only measure small parts and is low in measurement precision for large immovable workpieces if achieving the effect.

The utility model relates to a retroperitoneal cavity dilatation balloon which comprises a balloon body which is not transmitted by X rays and has mark colors, an inflation device and a connecting pipe communicated with the balloon body and the inflation device, and the inflation device is used for controlling inflation gas flow and further controlling inflation capacity. The balloon and the connecting pipe are detachably connected in a sealed mode through a first connecting device, and the inflating device and the connecting pipe are detachably connected in a sealed mode through a second connecting device; a pressure relief device is fixed to the inflation device and used for relieving pressure when inflation pressure is larger than preset inflation pressure so as to prevent the balloon from being broken. And the inflating device and the pressure relief device are electrically connected with the controller. According to the retroperitoneal cavity expansion balloon, the inflation capacity and pressure of the balloon can be controlled, the balloon is prevented from being broken, and parts can be conveniently detached and replaced and fragments of the balloon can be conveniently found.

The application discloses a preparation method of SnBi / B4C radiation shielding composite material. The material selects SnBi alloy with high atomic number, large density, strong processability and corrosion resistance as a matrix, B4C particles with light weight, high strength, good stability and large neutron reaction cross section as reinforcing fillers, and is formed through a powder metallurgy process, so that the composite material with high strength and the ability of shielding thermal neutrons, gamma rays, X rays and alpha particles is obtained. Compared with traditional lead gamma ray shielding materials with single function, the SnBi / B4C radiation shielding composite material solves the problem that neutrons cannot be shielded, and the selected raw materials are non-toxic, so that the composite material is expected to replace lead and be used for radiation shielding in the medical field.

The present application relates to the medical field, specifically is crosslinking type polylactic acid material and its preparation method and application, the present application is through the ATIPA bond to the polymer main chain, gives the material intrinsic, stable and throughout the whole life cycle X ray visibility, through the HEDS as the structural unit integration into the hard segment, constructs the dynamic exchange network, makes the material when microcosmic damage occurs can realize self-repair through the reversible fracture and recombination of disulfide bond, significantly improves its anti-fatigue performance and long-term service reliability, through the adoption of the degradation rate different PLA and PCL double soft segment copolymerization, constructs the time sequence degradation model, wherein the PLA of fast degradation provides the initial support and the PCL of slow degradation forms the secondary network, together ensures that the material mechanical strength presents gentle attenuation along with the blood vessel remodeling process, effectively avoids the risk of "cliff type" mechanical loss. Three kinds of functions integrated in the molecular level mutually coordinate, systematically solves the key bottleneck of the prior art.

The invention discloses an intelligent pulmonary tuberculosis detection method based on images and clinical data, and relates to the technical field of medical image detection.The method comprises the steps that chest X-ray medical images and patient clinical data are collected, cross-modal data enhancement is conducted through a conditional generative adversarial network, and an enhanced multi-modal data set is generated; feature reconstruction based on an attention mechanism is carried out on the pulmonary tuberculosis multi-modal feature sequence, association weights among different modal features in the pulmonary tuberculosis multi-modal feature sequence are calculated, and a pulmonary tuberculosis discrimination feature tensor is generated; and performing quantitative analysis on the pulmonary tuberculosis discrimination feature tensor, evaluating the global feature intensity of the pulmonary tuberculosis, performing pulmonary tuberculosis positive risk level determination according to the global feature intensity of the pulmonary tuberculosis, and generating a pulmonary tuberculosis risk determination conclusion. According to the method, cross-modal data enhancement is carried out by adopting the conditional generative adversarial network, so that the diversity and authenticity of medical image detection training data are remarkably improved, and the generalization ability of image detection is enhanced.

The application discloses a kind of about dysphagia magnetic resonance intelligent image diagnosis system, it is related to medical image processing and diagnostic technique field, including: swallowing state functional magnetic resonance acquisition module;Swallowing movement timing decomposition module;Virtual swallowing contrast parameter quantification module;Aspiration pneumonia risk prediction module;Diagnostic report generation module.The application will be obtained by traditional dependence X ray swallowing contrast leakage-Aspiration degree, pharyngeal residual state and pharyngeal transport time such as key quantitative index, by the brain activation timing and functional connection characteristics of functional magnetic resonance imaging Equivalent mapping, so that patients do not need to bear ionizing radiation can obtain and contrast gold standard highly comparable quantitative evaluation parameters, the application not only can realize no radiation equivalent quantitative evaluation, also can create new "functional survival brain area" evaluation and rehabilitation target positioning ability, establish the model for preventing aspiration pneumonia to occur, provide reliable quantitative standard for clinical rehabilitation.

The invention discloses an effective ray shielding structure, and relates to the technical field of ray shielding. According to the effective ray shielding structure, through scientific material selection and structural design, harmful X-rays generated when an electron accelerator works can be effectively blocked, harm of the rays to a human body and the environment is avoided, it is ensured that the self-shielding electron accelerator operates in a safe environment, reliable protection guarantee is provided for the irradiation process, and the service life of the self-shielding electron accelerator is prolonged. According to the effective ray shielding structure, an iron material and a lead material are mixed for use, and a sandwich biscuit type structure of stainless steel plate-lead plate-stainless steel plate is innovatively designed, so that the advantages of high density and good shielding effect of lead are utilized, and the problems that the lead material is soft, needs to be supported and is difficult to process are solved through the stainless steel plate; meanwhile, compared with the single use of concrete or iron materials, the combination greatly reduces the thickness of the shielding structure on the premise of ensuring the shielding effect, and gives consideration to both cost and flexibility.

The utility model belongs to the technical field of medical equipment, and relates to an intraoral sensor and an X-ray imaging system, the intraoral sensor comprises a housing, a positioning assembly, a circuit assembly and a photosensitive assembly; the shell comprises a first section and a second section which are arranged at an angle to each other, and the first section and the second section are respectively positioned outside and inside an oral cavity when working; the positioning assembly is connected to the first section, and the positioning assembly and the second section are oppositely located at the two ends of the first section; the photosensitive assembly is installed on the second section, the circuit assembly comprises a circuit board with a wireless transmission module, and the photosensitive assembly is electrically connected with the circuit board. According to the scheme provided by the utility model, foreign body sensation brought by the intraoral sensor in the oral cavity can be reduced, external connection wires can be omitted, the external connection wires are prevented from influencing operation of doctors, and the operation efficiency of the doctors is effectively improved.

The invention discloses fault disinfection and preservation equipment and method applied to a customs cold chain, and belongs to the field of customs cold chain food treatment. According to the technology, geometric and internal density characteristics of food are accurately obtained through an AI visual identification unit of laser three-dimensional modeling and X-ray density imaging; the AI system dynamically regulates and controls double electron beam parameters (the power is 5-12MeV, and the beam intensity is 1-5mA) and the speed of a conveyor belt based on deep learning and a Monte Carlo algorithm; the double electron beams adopt a 180-degree opposite emission layout with the distance larger than 10 meters, each emitter is provided with an independent protection fortress, energy is superposed in the food center to achieve deep disinfection of 20-40 cm, and the dose uniformity error is smaller than 5%. The treatment efficiency of the equipment reaches 20 tons / hour, the radiation leakage is less than 0.5 mu Sv / h, the preservation time of fruits is more than 3 months, the preservation time of vacuum low-temperature beef is more than 6 months, the equipment is adaptive to the'instant inspection and release 'process of customs, the problems of incomplete disinfection, short preservation time and low efficiency in the traditional technology are solved, and the equipment is suitable for cross-border cold chain large-scale treatment.

The application discloses a resolution plate, a resolution test system and a method for measuring resolution capability, wherein the resolution plate comprises a plate body, at least one slit group is arranged on the plate body, the slit group comprises two parallel slits which are arranged on the plate body along a path, the slit has a width in a direction perpendicular to the path, the slit has a uniform width along the path, the two slits have a consistent shape and width, the two slits are arranged at intervals, and the interval of the two slits is equal to the width of the slit. By arranging at least one slit group with two slits on the plate body made of tungsten material, high-energy X rays can form at least one image with two strips on the imaging plate through the slit group, and the corresponding curve can be obtained through simple measurement and multiple tests, so that the resolution capability of the ray point source under the corresponding magnification ratio and the slit width can be intuitively and accurately reflected.

The application discloses an electron beam curing shielding device, which comprises a shielding cover, at least one jig and a conveying mechanism. The shielding cover is provided with a shielding channel, and the shielding channel is provided with a curing area. An electron beam emitting device is arranged above the curing area on the top wall of the shielding channel. The upper surface of the jig is provided with a containing cavity for containing a workpiece. The conveying mechanism can drive the jig to move along the shielding channel. When the jig is located in the shielding channel, the top end of the jig is close to the top wall of the shielding channel, and when the jig is located in the curing area, the electron beam emitting device faces the containing cavity. When the jig is in the curing area, the electron beam emitted by the electron beam emitting device can irradiate and cure the workpiece in the containing cavity, and the generated X rays can be reflected between the inner walls of the containing cavity and between the inner walls of the containing cavity and the workpiece, so that the reflection times of the X rays in the shielding channel are increased, and the leakage of the X rays is reduced.

The invention provides a split type wireless detector. The split type wireless detector comprises a positioning ring, a positioning support detachably and fixedly connected with the positioning ring, an imaging sensor detachably and fixedly connected with the positioning support and used for X-ray imaging, a wireless data transmission module used for transmitting detection images and a power module used for supplying power to the imaging sensor and the wireless data transmission module. The positioning ring is matched with the positioning bracket to restrain the position of the imaging component relative to the detected object, so that the imaging quality and the image acquisition efficiency are improved; meanwhile, the power supply module supplies power to the imaging sensor and the wireless data transmission module, the wireless data transmission module wirelessly transmits signals, wiring harnesses are completely avoided, only a necessary structure for auxiliary positioning is reserved, the shooting efficiency, convenience and accuracy are improved, and the reliability problem is avoided; in addition, the detector can adapt to different positions for shooting by avoiding the wire harness; and finally, the parts are designed to be of a detachable structure, the situation that part of original parts are abnormal and consequently the whole machine is scrapped is avoided, maintainability is improved, and maintenance cost is reduced.

The invention provides a high-energy hard X-ray monochromatic imaging system based on a zirconium Kalpha source. The high-energy hard X-ray monochromatic imaging system comprises a high-power laser, a Zr target material arranged in front of the high-power laser, an imaging bent crystal adjusting module arranged in front of the Zr target material and an imaging signal detection module arranged behind the high-power laser, the high-power laser is used for generating laser; the Zr target material is used for receiving the laser and generating X rays with Zr K alpha characteristics; the imaging bent crystal adjusting module is used for adjusting and focusing the X-rays and correcting aberration generated when the Bragg diffraction angle deviates from normal incidence; and the imaging signal detection module is used for receiving an X-ray focusing signal, shielding high-energy charged particles and carrying out regional control on the transmittance of a space signal through an electric actuator. According to the invention, high-precision optical path alignment and signal acquisition can be realized on the premise of keeping the stability of a vacuum environment, high-resolution imaging of high-density plasma is realized, and the device has the advantages of compact structure, convenience in operation, remote regulation and control and the like.

The utility model discloses a food detection X -ray machine with prevent leaking function, include: X -ray machine body and transport line, be provided with the installation cavity that along its length direction from one side to the other side is worn to X -ray machine body, and transport line is set up and is worn installation cavity, still be provided with the emitter that can be towards transport line and emit X -ray on X -ray machine body, and the entrance protection subassembly of installation cavity's entrance side is provided with the exit protection subassembly of installation cavity export side, and the exit protection subassembly and entrance protection subassembly all include a plurality of protection curtain, and the plurality of protection curtain between the same side interval setting, and form interval between adjacent two protection curtains, and when material passes through protection curtain, protection curtain can produce elastic deformation and make way for material, and when material passes through protection curtain, protection curtain can reset. The utility model provides a food detection X -ray machine with prevent leaking function that can prevent X ray leakage and conveniently transport material.

The utility model discloses convexity measuring equipment arranged on a hot mill, and relates to the technical field of steel production equipment. Comprising a high-voltage X-ray tube located on a first supporting frame and used for generating X-rays; the ray detection array is located on the second supporting frame and used for receiving the X rays penetrating through the detected strip steel; the grating projection system is used for forming a grating array on the surface of the strip steel; the Moire camera is used for shooting the shape of the grating line in real time and obtaining the straightness and width of the strip steel according to the change and shape of the grating line; the upper part of the sliding frame body is a box body, and the lower part is a C-shaped frame; the high-voltage X-ray tube, the grating projection system and the Moire camera are placed in the box body, and the ray detection array is located on the C-shaped frame. By measuring the straightness and width of the strip steel in real time, problems in the production process can be found in time, unqualified products are avoided, the rejection rate is reduced, and the production cost is reduced.