초록 ▼

A flow measuring device for indicating the leak status of a pressurized fluid-carrying line pressurized by a pump includes an electronic leak sensing module connected in fluid communication with the pressurized line and configured for insertion within a detection port of a pump manifold. The module

A flow measuring device for indicating the leak status of a pressurized fluid-carrying line pressurized by a pump includes an electronic leak sensing module connected in fluid communication with the pressurized line and configured for insertion within a detection port of a pump manifold. The module includes a thermal sensor effected by flow through the pressurized line, whereby leaks in the pressurized line are detected by monitoring the thermal sensor for changes in output signal that correspond to flow through the pressurized fluid-carrying line. The flow measuring device includes a system control unit for monitoring the electronic leak sensing module and indicating the leak status of the pressurized line. Wires which provide power to the leak sensing module, the system control unit and the pump for pressurizing the pressurized line are also used for communication.

대표청구항 ▼

[ What is claimed is:] [20.] A flow measuring device for indicating the leak status of a pressurized fluid-carrying line, comprising:an electronic leak sensing module connected in fluid communication with the pressurized line, said module includinga thermal sensor effected by flow through the pressu

[ What is claimed is:] [20.] A flow measuring device for indicating the leak status of a pressurized fluid-carrying line, comprising:an electronic leak sensing module connected in fluid communication with the pressurized line, said module includinga thermal sensor effected by flow through the pressurized line, whereby leaks in the pressurized line are detected by monitoring said thermal sensor for changes in output signal that correspond to flow through said pressurized fluid-carrying line,a housing defining a flow delivery passage having an input and an output coupled to said pressurized line and a detection conduit enclosing and defining a detection passage coupled to said flow delivery passage, said thermal sensor being located on said detection conduit,a deflector plate disposed in said housing within said flow delivery passage to have a fluid flow switch function, said deflector plate having a first flow deflection position preventing flow through said flow delivery passage while allowing flow through said detection passage and a second flow position allowing flow through said delivery passage,a biasing element for biasing said deflector plate toward said first flow deflection position, fluid flow through said pipeline above a predetermined value causing said deflector plate to move to said second flow position,a temperature controller located on said detection conduit for controlling the temperature of said detection conduit, said thermal sensor including a first thermal element located on an upstream side of said temperature controller and a second thermal element located on a downstream side of said temperature controller, anda third thermal element located on said housing such that said third thermal element indicates a temperature of said housing which is unaffected by said temperature controller.