32 results about "Puncture tests" patented technology

The invention relates to the field of design and inspection of reinforced thermoplastic pipes (RTP) and aims at providing a method for inspecting the reinforced thermoplastic pipe based on the designed life. The method comprises the following steps of: performing bursting test on the RTP; performing puncture test on the RTP; performing tensile test on a reinforcement material of the RTP and a base body material of the RTP; obtaining a long-time burning pressure Plife of the RTP based on the designed life; and finally comparing a relation between the long-time burning pressure Plife and a designed pressure Pdesign, if Plife is greater than or equal to K'Pdesign, determining that the product is qualified. By the method, the burning pressure under long-time service life of the RTP can be forecast and inspected by short-time test, so the working procedure of performing a large amount of long-time hydrostatic test in the conventional long-time hydrostatic intensity measurement method basedon an extrapolation method, so the RTP production cost is saved, the production period is shortened, and the reliability and the product competitiveness of the RTP are enhanced.

A medical examination puncture specimen collection and fixation device solves the problems of maintaining a fixed shape in a container after specimen collection and perfusing formalin to produce splashes and volatilization to pollute the environment. Technical solution: A device for collecting and fixing medical examination puncture specimens, including a storage box, a box cover, and a specimen fixing plate. A pair of solution chamber opening control pins are provided at the bottom of the box, and a solution chamber is provided in the box cover. The storage box and the box cover There is a sealing and locking mechanism at the joint; a set of grooves are set at intervals along the width direction on the fixed plate, and the size corresponds to the puncture specimen. A set of hanging grooves are set on both sides of the length direction, and a pair of grooves are set at both ends of the plate. The mounting holes are correspondingly matched with the control pins in the storage box to form an assembly structure in which the specimen fixing plate is assembled in the storage box and sealed and engaged by the box cover. Beneficial effects: simple structure, convenient use and operation, no contact with formalin solution when collecting and making specimens, preventing its volatilization from harming medical personnel who collect and make specimens.

The invention discloses a voltage control box used for a breaker puncture test. The voltage control box comprises a voltage regulation circuit, a boosting circuit, a near-end sound and light circuit, a far-end sound and light circuit and a voltage regulation control circuit. The voltage regulation circuit is connected with the boosting circuit and the near-end sound and light circuit respectively. The voltage regulation circuit is connected with the voltage regulation control circuit through an external voltage regulation and limiting motor. Communication between the near-end sound and light circuit and the far-end sound and light circuit is carried out through a Bluetooth device. The near-end sound and light circuit is connected with the input end of the voltage regulation circuit in parallel. The voltage control box can effectively avoid potential safety hazards and personal risks of people, especially other workers not within electric connection ranges not capable of being seen by operators, surrounding the spot due to shouting negligence and lack of monitoring before manual operation. Meanwhile, the voltage control box can carry out constant-speed boosting and constant-speed step-down, thereby eliminating the limitation that operators rich in experience are needed to carry out manual operation and control in the traditional voltage control box boosting process and reducing test difficulty.

The invention relates to a special detection device for a feeding bottle used for testing the pulling resistance performance test and the puncture performance test of a pacifier on a feeding bottle. It is installed horizontally and the input end is connected to the torque motor. The second bevel gear is arranged vertically. The end of the gear shaft of the second bevel gear is fixed with an upwardly extending screw shaft; the upper side of the workbench is provided with a vertical guide rail, which slides Connect the lifting arm with a horizontal setting. There is an internal threaded hole in the lifting arm that matches the thread of the screw shaft. The lower side of the lifting arm is connected with a side force transmission sense and a test head connected to the load cell. The test head includes a load cell that passes the standard. The threaded joint used to connect the piercing head for the puncture test and the clip for clamping the teat for the tensile test, the load cell is connected to the controller, the controller is connected to the torque motor, and the lower side of the test head There is a special tooling for clamping feeding bottles on the working table.