SU382872A1 - DEVICE FOR DETERMINATION OF PLACE AND TIME OF NORYVA PIPELINE - Google Patents

Description

A device is known for determining the location and time of a pipeline rush, including a velocity head sensor, the output of which through a filter is a phase matching unit and an amplifier connected to an adder, and a hydromechanical head sensor whose output is also connected to an adder through a filter and amplifier, and recording and indicating devices.

In the proposed device, in order to increase accuracy, an indicator and a spectrum analyzer are connected to the output of the adder, which is connected to the input of a resolver connected to a recording and indicating instrument.

The invention is illustrated in the drawing, which shows a general view of the device.

On the pipeline section / cutters Schuder 2 and 3 are mounted on which hydromechanical pressure sensor 4 and pressure sensor CKJ 5 are mounted, the outputs of which are connected to wideband filters 6 and 7. The signal from the sensor through the filter and phase-matching unit 8 after amplification by amplifier 9 is fed to the input of the adder 10. At the same time, a signal from the sensor is fed to the input of the adder via an amplifier.

Selected in the adder, the useful signal from the output of the adder is fed to the input of the detector 12 - and simultaneously to the input of the spectrum analyzer 13. The output of the spectrum analyzer

connected to the input of the decisive device / - /. to the output of which are connected the regsgriruyushchy 15 and the 16 devices. The device works in the following way.

As you know, the full pressure in the pipeline can be represented

as the sum of three pressures — geometric, hydromechanical, and speed.

When unspecified fluid movement

Both hydromechanical and high-speed nanors pulsate, which both have a functional relationship between themselves, proportional to the square of the flow rate, and are described by the form of an equation.

Thus, two hydromechanical pressure sensors installed at the pipeline / sensor 4 and a velocity head sensor 5 accept and convert two identical waveform values of fluid flow, separately through lunopos, the first filters 6 and 7 amplified to the same amplitude M 5 and 9 and built in the phase matching unit S in antiphase, and fed to the approach of the adder 10, where they are mutually suppressed.

When a pressure pulse arises as a result of a pipeline failure, the hydromechanical pressure sensor 4 changes the level of the signal, the opposite of it changes

signal sensor 5 velocity head (almost this change can irenoprsch.

since the vector of the vibrational velocity of the incoming signal is many times smaller than the vibrational flow rate).

As a result, in the adder 10, a difference signal is selected, corresponding in shape to the incoming signal, which goes to the detector 12 and to the spectrum analyzer 13.

Garms selected in the spectrum analyzer are in the form of signals fed to a solver, where their amplitude ratios are calculated, which carry information from the distance to the place of origin of the pressure disturbance pulse. The calculated amplitude ratios in the form of a signal do not arrive at the indicating 16 and registering 15 devices.

Subject invention

A device for determining the location and time of a pipeline rush, including a sensor

a velocity head, a KOTqporo output through a filter, a phase matching unit and an amplifier are connected to an adder, and a hydromechanical pressure sensor, the output of which through a filter and amplifier is also connected to an adder, as well as recording and indicating devices, which, in order to improve accuracy, adder connected to the detector and a spectrum analyzer connected to the input of the decisive

device connected to the recording and indicating devices.