36results about How to "Prevent Radiation Leakage" patented technology

The invention discloses a high-efficiency fire-resistant heat-dissipating cable. Shielding tapes are coated and connected mutually by wave-shaped overlapped segments at the two sides to form a shielding layer; and heat collecting chambers are arranged between the shielding layer and a heat collecting sheath and are communicated to the outer surface of the cable through cooling holes. Armored steeltapes are coated and connected mutually to form a metal armor layer by steel tape overlap-joint segments at the two sides; embedded holes are formed in the steel tape overlap-joint segment at one side of each armored steel tape; and embedded bosses are arranged at the steel tape overlap-joint segment at the other side of the armored steel tape. When overlapped joint is performed, the embedded bosses are embedded into the embedded holes. Besides, a rare-earth fire-resistant layer is made of a material comprising 8wt% to 12wt% of fluororubber, 5wt% to 8wt% of aluminum hydroxide, 2wt% to 4wt% ofrare earth oxide, 1wt% to 2wt% of glycerol, 2wt% to 4wt% of silicon carbide, 3wt% to 6wt% of lanthanum phosphate, 6wt% to 8wt% of zirconic acid gadolinium, and remainder being epoxy resin. The cablehas the good high-temperature-resistant and flame-retardant performances; heat can be dissipated efficiently; and the cable has the stable structural integrity and the good mechanical performance.

The invention discloses a radiation-proof stainless steel door with glass, and relates to the technical field of stainless steel door and window equipment, including an upper guide rail, a lower guide rail, a stainless steel groove, and a radiation-proof door panel group, and the radiation-proof door panel group is fixed by "U"-shaped stainless steel grooves around , the upper end and the lower end of the stainless steel tank are respectively movably connected with the upper guide rail and the lower guide rail through welded pulleys; the anti-radiation door panel group includes the first stainless steel door panel, the second stainless steel door panel, lead plate, fireproof board, the first stainless steel door panel, the second stainless steel door panel A lead plate and a fireproof plate are closely arranged between the door plates. The lead plate is arranged on a side close to the first stainless steel door plate. The first stainless steel door plate is close to the room. The invention is easy to operate, improves the anti-radiation performance of the anti-radiation stainless steel door, and prolongs the service life.

The invention discloses a secondary fluorescent wide-angle multifunctional imaging device which comprises a light source adjusting mechanism, a detection plate adjusting mechanism, a wide-angle lightsource, a detection plate, a fixed tray and a rotating mechanism. The wide-angle light source and the detection plate are disposed at the two sides of the center of the fixed tray respectively; the light source adjusting mechanism is used for adjusting the height of the wide-angle light source and the distance between the wide-angle light source and the detection plate; the detection plate adjusting mechanism is used for adjusting the height of the detection plate and the distance between the detection plate and the wide-angle light source; the rotating mechanism is used for enabling the wide-angle light source and the detection plate to rotate synchronously with the fixed tray as the axis. The secondary fluorescent wide-angle multifunctional imaging device can perform low-dose imaging onvarious parts of the human body by moving horizontally and vertically; meanwhile, through the rotating mechanism, the wide-angle light source and the detection plate can rotate synchronously with thefixed tray as the axis, and vertical rotary scanning and perspective analysis of various parts of the human body are realized; the device adjusts imaging through wide-angle cone light and is small inplane space occupation, diversified in function and applicable to various parts of the human body.

The present invention provides an inspection apparatus using radiation, which prevents radiation leakage and shortens the inspection time. An inspection apparatus includes a feed-in preparation chamber, an imaging chamber, and a feed-out preparation chamber. Each preparation chamber includes a feed-in unit that receives an inspection object through a first opening, a traverser that translates the received object to a second opening in a direction different from the receiving direction of the object, and a feed-out unit that moves the object in a direction different from a moving direction of the traverser and discharges the object through the second opening. The imaging chamber includes an imaging unit that images the object fed from the feed-in preparation chamber. The traverser includes a mount for the object, and a shield that moves together with the mount and prevents radioactive rays entering one of the first and second openings and propagating in the moving direction of the traverser from reaching the other opening.

The invention belongs to the technical field of nuclear industry maintenance and particularly relates to a maintenance method of MOX equipment. The maintenance method includes: transferring radioactive objects in a to-be-maintained glove box into an adjacent glove box; sealing the to-be-maintained glove box, and using air circulation and dust collection to lower the radioactive level in the to-be-maintained glove box; performing chemical decontamination on workbench surfaces, wall faces and equipment surfaces in the to-be-maintained glove box; performing dose analysis on the radioactive levelin the to-be-maintained glove box; if the radioactive level in the to-be-maintained glove box meets radioactivity regulations, allowing operation staff to enter the to-be-maintained glove box; if theradioactive level in the to-be-maintained glove box does not meet the radioactivity regulations, continuing the third step until the radioactive level meets the radioactivity regulations; building a gas tent in a preparation area to prevent radioactive contamination from being brought to the outside; allowing the operation staff wearing special protective garments to enter the to-be-maintained glove box to perform maintenance. By the method, the radioactive level can be lowered evidently, the safety of maintenance workers can be guaranteed, radioactive leakage can be avoided, and operation safety under high-radiation work conditions is achieved.

The present invention relates to a precast radiation protection board, which is structured for jointing another protection board. The protection board includes a protection layer that is formed of a mixture of barium sulfate and cement and outside isolation plates that are respectively attached to opposite sides of the protection layer. The outside isolation plates are fiber cement boards. This arrangement allows the precast structure to be efficiently installed and allows for direct painting or decorative coating, so as to significantly reduce operation time.

The invention discloses a welding detection device. The device comprises a cabinet body, wherein the cabinet body is internally provided with a cavity; a first embedding groove is formed in the inner top wall of the cavity; a second embedding groove is formed in the inner bottom wall of the cavity; an operating cavity which extends to the right side is arranged in the cabinet body at the bottom of the second embedding groove; a through groove which extends upwards and penetrates through the inner bottom wall of the cabinet body is formed in the tail end of an extending section of the right side of the operating cavity; a pushing-ascending groove which extends upwards and penetrates into the first embedding groove is formed in the inner wall of the rear side of the cavity; a first screwed rod is arranged in the pushing-ascending groove, and is connected with a first motor; the first motor is arranged in the inner top wall of the first embedding groove and is fixedly connected; a first glidingly connected block which is connected in a thread fit way and is connected with the pushing-ascending groove in a glidingly connected fit way is arranged on the first screwed rod; the front end surface of the first glidingly connected block penetrates into the cavity and is fixedly provided with a cross rod; and glidingly connected plates are equally arranged on the two sides of the cross rod. The device has the advantages of simple structure, convenient operation, wide detection range and high efficiency, leakage of ray is prevented, and detection safety is improved.

The invention discloses a lighting device used for a glove box. The lighting device comprises a lampshade and LED lamp beads; the lampshade comprises a hollow columnar body with one opened end and theother closed end, the opened end of the lampshade is arranged on a preset opening of the glove box, the closed end of the lampshade and a lampshade body stretch into the glove box, and the preset opening is closed; the LED lamp beads are arranged in a hollow cavity of the lampshade, and can be put in and taken out from the opened end.

The invention discloses an electron beam curing shielding device allowing continuous feeding of plates. The electron beam curing shielding device comprises a conveying assembly used for conveying the plates, and the conveying assembly comprises a plurality of conveying rollers which are arranged at intervals; the outer side of the conveying assembly is provided with a closed shielding cover in a covered mode, a conveying channel extending along the conveying direction of the conveying assembly is arranged in the shielding cover, and the conveying channel forms a feeding opening and a discharging opening correspondingly at the two ends of the shielding cover; the conveying channel comprises a feeding area, an irradiation curing area and a discharging area which are sequentially arranged in the conveying direction, an electron accelerator is arranged in the irradiation curing area, and a plurality of shielding assemblies are arranged in the feeding area and the discharging area, each shielding assembly comprises a shielding plate fixed on the inner wall of the shielding cover and a shielding door used for separating the conveying channel together with the shielding plate, an opening for allowing the plates to pass through is formed in the shielding plate, the shielding door is arranged to be capable of rotating relative to the shielding plate, and a reset mechanism is arranged on the shielding door. According to the electron beam curing shielding device, on the basis of ensuring the shielding effect and the gas environment, the production efficiency of a production line is improved.

The invention provides a totally closed alpha-energy spectrum measurement system. According to the measurement system, a sample treatment table, a special muffle furnace, an alpha sample vacuum chamber and a charge-sensitive preamplifier are arranged in a stainless steel glove box; a bias power supply, a computer and a data acquisition processor are arranged in another measurement operation room; information transmission between the bias power supply and data acquisition processor in the measurement operation room and the alpha sample vacuum chamber and the charge-sensitive preamplifier in the stainless steel glove box are achieved through cable connection. According to the totally closed alpha-energy spectrum measurement system, the operations of preparing, transferring and measuring samples are finished in a completely closed environment, and instrument control and data processing are operated remotely; shells and components of various parts in the glove box are made of high-performance and acid-corrosion-resistant materials, so that the service life is greatly prolonged. The totally closed alpha-energy spectrum measurement system is convenient to operate, low in noise and stable in performance and is suitable for alpha-energy spectrum measurement of highly toxic and highly radioactive special samples.

The invention discloses X-RAY detection equipment capable of realizing microscopic CT (Computed Tomography). The X-RAY detection equipment comprises an objective table mechanism, a first lifting mechanism, a first lifting seat connected with the first lifting mechanism, a distance adjusting mechanism mounted on the first lifting seat, and an x-ray transmitting mechanism and an x-ray receiving mechanism which are connected with the distance adjusting mechanism, the objective table mechanism is located between the x-ray transmitting mechanism and the x-ray receiving mechanism, and the objective table mechanism comprises a first translation mechanism, a rotating mechanism connected with the first translation mechanism, and a bearing table connected with the rotating mechanism and used for placing a to-be-tested product; and a positioning navigation mechanism is further arranged above the bearing table. According to the method, the defects on the product plane can be detected, 3D reconstruction can be realized through X-ray cone beam CT scanning, the defects in the product and the spatial positions of the defects can be more intuitively seen, and the universality is high.

The invention relates to a radiopharmaceutical drug extraction and delivery device for chest tumor examination. The device comprises a fully enclosed drug extraction operation platform and injection platform, wherein the drug extraction operation platform is provided with a lead can conveying device and drug extraction equipment, the drug extraction operation platform is communicated with the injection platform through a conveying passage and a conveying device, the conveying device is arranged in the conveying passage, the fully enclosed operation platform and injection platform and the conveying passage effectively isolate a radioactive drug from the outside, and the drug extraction operation can be achieved without manual operation through the arrangement of the drug extraction equipment, thereby reducing the contact between a medical worker and the radioactive drug, achieving the protection of the medical worker, improving the protection effect, and reducing the radiation damage ofthe radioactive drug to the medical worker.