4results about How to "Accurate pressure value" patented technology

The utility model discloses a cooler breather valve testing device, and relates to the technical field of breather valve testing devices, the cooler breather valve testing device comprises a fixed station, the edge of the upper surface of the fixed station is provided with a chute, the interior of the chute is slidably connected with a slide block, the upper end of the slide block is fixedly connected with a moving plate, and the moving plate is provided with a clamping groove. A mounting plate is fixedly connected to the surface of one side of the moving plate in a threaded mode, a fixing assembly is fixedly connected to the surface of the mounting plate, a connecting plate is fixedly connected to the inner wall of the fixing table, a servo motor is fixedly connected to the upper surface of the connecting plate, and an adjusting assembly is connected to the upper end of the servo motor in a spline mode. According to the utility model, the fixing rod and the clamping block can firmly fix breather valves of different specifications, so that the accuracy of test data is ensured, and the accuracy of the data is improved; and through the arrangement of a servo motor and an adjusting assembly, the height of the placement plate can be adjusted according to the requirements of an operator, and the operator can conveniently place the tested breather valve.

The application discloses a piston system structure of a non-rotating piston for a piston pressure gauge, and relates to the technical field of pressure measuring devices.The piston system structure comprises a base, a piston cylinder, a driving device, a vertically arranged first piston rod and a hollow second piston rod.The piston cylinder is arranged in the base and rotationally matched with the base.The driving device can drive the piston cylinder to rotate through a transmission mechanism.The bottom end of the first piston rod extends into the piston cylinder and is slidingly matched with the piston cylinder.The top end of the first piston rod is fixedly connected with a piston which is used for being fixedly connected with a weighing tray.The pressure weighing tray is arranged above the base.The second piston rod is fixedly connected with the base, and the top end of the second piston rod extends into the piston cylinder.The bottom end of the second piston rod is communicated with the liquid outlet of a pressure injection device through a pipeline.The piston system structure can effectively avoid the measurement error caused by the deflection of the piston by driving the piston cylinder to rotate and making the piston not rotate.

The utility model relates to a natural gas system safety valve belongs to safety valve technical field, the safety valve includes the valve body, the bottom of valve body is the air inlet section, the side is the exhaust section, both intercommunication, the inside of valve body is provided with the sealing piston at the junction of air inlet section and exhaust section, the bottom of sealing piston seals the air inlet section, the upper cavity of valve body is screw thread connection with the support bolt in the top, the downside of support bolt is connected with the top surface of sealing piston through spring mechanism, the top of upper valve chamber is still screw thread connection with locking nut on the upside of support bolt. The safety valve designed in the utility model passes through setting up two layers of support structure of support bolt and locking nut, guarantees the position stability of adjusted sealing piston support end, will not displace in the long -term use process.

The utility model discloses medical perfusion pump pressure measuring module, including pressure response part and sensor lock sleeve part, the sensor lock sleeve part has the socket of built -in pressure sensor, the pressure response part includes the plug and diaphragm, the plug is detachable with socket and is equipped with the pressure chamber of being accessible perfusion pipeline in, the pressure chamber is equipped with the piece groove of being detachable closed by diaphragm at the cavity wall, the diaphragm can be close to pressure sensor when the plug is connected together with socket, and installation is simple, and pressure monitoring is accurate, and the leakage phenomenon is not easy to take place.