Beijing Const Instrument Technology Inc.

Weili Jiang

A turn-back coaxial gas pressurizing pump and gas pressurizing method using the same, relate to the field of gas pressure boosting. The turn-back coaxial gas pressurizing pump includes a primary cylinder, a primary piston, a secondary cylinder serving as a rod of the primary piston, a pressure bar, an air pump bonnet, a secondary piston and a piston rod. The primary cylinder, the secondary cylinder and the piston rod are arranged coaxially. A rear end of the piston rod extends through a first non-returning adaptive valve provided in the primary piston and is fixed on the bottom wall of the primary cylinder. As a result, the two pistons move in opposite directions to boost the pressure.

Turn-back coaxial gas pressurizing pump and gas pressurizing method

Provided is a multi-range field full-automatic pressure and electric signal calibrating instrument, comprising: control components such as a shell, a power switch, multiple-interfaces, a display, a keyboard, and a gas pressure generating unit, a power supply unit, a pressure detecting unit, a gas pressure control unit and an electric signal detecting unit; the pressure output end of the pressure control unit is in parallel connection with pressure joints which are used for installing multiple pressure standard meters and detected meters with different ranges; the pressure control unit is in signal connection with the pressure standard meters; the electric signal detecting unit is in signal connection with the pressure control unit and the detected meters; the power supply unit can supply power by batteries. The calibrating instrument does not need to be externally connected with a gas cylinder and an alternating current power supply and can automatically generate a gas pressure and generate an accurate standard pressure; the design of the multi-range pressure standard meter can be suitable for various detected meters; the double detection and calibration for pressure and electric signals can be implemented; the weight and volume of the instrument are small; and the multi-range field full-automatic pressure and electric signal calibrating instrument is convenient to carry in the field and can carry out automatic calibration on various field pressure instruments.

High pressure bidirectional miniature electric gas pump

A multi-range on-site full-automatic pressure and electric signal calibration instrument includes a housing, a power switch, a plurality of interfaces, a display, a keyboard, a gas pressure generation unit, a power supply unit, a pressure detection unit, a gas pressure control unit and an electric signal detection unit. A pressure output port of the pressure control unit is in parallel connection with pressure connectors used for installation of a plurality of pressure standard devices with different ranges and a calibrated gauge. The pressure control unit is in signal connection with the pressure standard device. The electric signal detection unit is in signal connection with the pressure control unit and the calibrated gauge; and the power supply unit can supply power by batteries. The calibration instrument does not need to be externally connected with a gas cylinder or an alternating current power supply.

Multi-range field full-automatic pressure and electric signal calibration instrument

A multi-range on-site full-automatic pressure calibration instrument includes a housing, a power switch, a plurality of interfaces, a display, a keyboard, a gas pressure generation unit, a power supply unit, a pressure detection unit and a gas pressure control unit. The gas pressure generation unit is a gas pressurizing pump communicated with atmosphere. A pressure output port of the pressure control unit is in parallel connection with pressure connectors used for installation of a plurality of pressure standard devices with different ranges and a calibrated gauge. The pressure control unit is in signal connection with the pressure standard device. The power supply unit can supply power by batteries. The calibration instrument does not need to be externally connected with a gas cylinder or an alternating current power supply and can automatically generate a gas pressure and generate an accurate standard pressure.

Growing community of inventors

Beijing, China

Weili Jiang