39results about How to "Quick leak detection" patented technology

A process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa in a continuously operated polymerization reactor which is controlled by a pressure control valve at the outlet of the polymerization reactor, the process comprising continuously monitoring the pressure within the polymerization reactor, feeding a pressure signal to a controller for controlling the control valve and having the controller altering the opening of the pressure control valve to control the pressure within the polymerization reactor, wherein the controller starts an emergency shutdown program when the pressure control valve closes more than a preset threshold value and the pressure within the polymerization reactor decreases below a preset pressure threshold.

In a calibration mode, an equilibrium period after pressurized gas is sealed in a device under inspection and a reference tank is divided into two periods; pressure-difference changes ΔP1 and ΔP2 are measured when a first-half equilibrium period of duration T1 elapses and when a second-half equilibrium period of duration T1 elapses, respectively; and a pressure-difference change ΔP3 generated in an inspection period of duration T2 is measured. A pressure-difference change CT2 generated for duration T2 from when a period of time in which the influence of an adiabatic change seems to become sufficiently stable elapses is measured. A drift correction coefficient K is calculated from these measured values using K=(ΔP3−CT2) / (ΔP1−ΔP2), is stored in a storage section, and is used in an inspection mode.

The invention discloses an infusion bottle leak detection device and a leak detection method thereof. The infusion bottle leak detection device comprises a vacuum tank, an infusion bottle fixation frame, a vacuum-pumping device and a control system. The vacuum tank is provided with a vacuum cavity, an opening of which is upward; the vacuum cavity of the vacuum tank is filled with purified water; the vacuum cavity of the vacuum tank is internally provided with a infusion bottle fixation frame arranged in the purified water; the vacuum-pumping device is communicated with the top portion of the vacuum cavity of the vacuum tank; the vacuum-pumping device is in electrical communication connection with the control system; and the upper opening of the vacuum cavity of the vacuum tank is sealed by a seal top plate. The infusion bottle fixation frame comprises a support disk, infusion bottle bottleneck clamps and support rods. The support disk is provided with the plurality of infusion bottle bottleneck clamps. The infusion bottle fixation frame clamping infusion bottles is placed in the vacuum tank filled with the purified water, so that by observing whether the bottleneck of each infusion bottle has bubbles, a rapid leak detection purpose can be realized.

The invention relates to a natural gas rapid pressure measurement leak detection device and a leak detection method, wherein the leak detection device includes a gas pipeline, the gas pipeline is provided with an opening and closing valve for opening and closing the gas pipeline, the gas pipeline is connected with a three-way pipe, and the three-way pipe One nozzle is a pressure measuring nozzle, and the pressure measuring nozzle is provided with a check valve for opening and closing the pressure measuring nozzle and a plug for blocking the pressure measuring nozzle, and the plug is provided with a plug penetrating from the outer surface of the plug to the inner surface. The threaded hole, the threaded push rod that matches the threaded hole, the threaded sleeve at the end of the pressure measuring pipe mouth is provided with a threaded plug, and the other end of the threaded plug connected with the pressure measuring pipe mouth is connected with a pressure gauge, and the threaded plug is provided with a As the threaded plug moves in the radial direction of the pressure measuring tube mouth, the threaded push rod moves the screw blade in the axial direction of the plug, and the threaded push rod pushes the valve stem on the check valve to move, opening the pressure measuring tube port, and the check valve has The elastic member that makes the check valve elastically return to close the pressure measuring tube port. Realize rapid leak detection, high efficiency, convenience, and resource saving.

A leak detection tool applied to a high pressure gas leak detection method, comprising a packer and a detection gas-collecting casing; the packer is arranged in an oil string to be detected or a casing string or an auxiliary tube, is located at two sides of a connecting thread buckle part to be detected and likely to leak, and is used for establishing inner confined space which is capable of filling with tracer gas and is otherwise called plenum space; the detection gas-collecting casing is arranged outside the oil string or the casing string or the auxiliary tube, is located in the connecting thread buckle part likely to leak, and covers the connecting thread buckle part to establish outer confined space which is capable of detecting leak and is otherwise called detection space; the plenum space is connected with a high pressure vent pipe on a pressurized container to facilitate high pressure tracer gas to enter. The detection space is connected with a detector of the tracer gas by being provided with a pipeline. The leak detection tool provided by the invention has simple structure, high detection reliability and convenient and practical field operation.

The invention discloses a penicillin bottle leakage detection device based on a dual wavelength-TDLAS technology and a measurement method thereof. The device comprises a laser, a laser controller, anoptical fiber coupler, a first collimator, a first detector, a second collimator, a second detector, an acquisition card and a computer, wherein the laser controller is electrically connected with thelaser; the optical fiber coupler is connected with the laser; the first collimator is used for collimating laser beams with a laser intensity ratio to be a; the first detector is fixed on the first collimator; the second collimator and the second detector are fixed at two sides of the penicillin bottle body; the acquisition card is electrically connected with the first detector and the second detector; and the computer is electrically connected with the acquisition card. The method comprises the following steps: the laser is adopted to output two laser beams with different output wavelengths,the two laser beams are divided to two kinds of laser beams with the laser intensity ratios to be a and b by the optical fiber coupler, the collimators are adopted to collimate the split laser beams,the split laser beams are received by the detectors, the beams are acquired by the acquisition card after initial intensity and transmitting intensity are obtained, the optical signals are convertedto electric signals and are then transmitted to the computer for data processing, and the leakage coefficient of the penicillin bottle is obtained.