RU1818564C - Device for measuring pulsed pressure - Google Patents

Abstract

Usage: the invention relates to mining engineering, in particular to the design of pulsating pressure measuring devices, and can be used. Designed to measure the pressure at the outlet of a hydraulic pulse mining machine. SUMMARY OF THE INVENTION: a pulsating pressure meter comprises a manometer connected by a rigid and flexible conduit through a valve to a pulsating pressure source, further provided with a jet splitter installed between the pulsating pressure source and a flexible pipe, the jet splitter being made in the form of a housing inside of which a gap is installed a supply and a receiving nozzle with the formation of a chamber connected to the atmosphere, and a filter is installed in front of the feeding nozzle. 2 ill.

Description

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The invention relates to mining engineering, in particular to the design of pulsating pressure measuring devices, and can be used to measure the inlet pressure of hydraulic pulse mining machines.

The aim of the invention is to increase reliability.

Fig. 1 shows a general view of a pulsating pressure meter: Fig. 2 is a sectional view of a pulsating pressure meter.

The pulsating pressure meter comprises a manometer 1 communicated through a three-way valve 2 by means of a flexible 3 and rigid 4 pipelines with a jet splitter 5 mounted on the pipeline 6 with a pulsating pressure source. The jet splitter 5 is made in the form of a housing 7, inside of which a supply nozzle 8 and a nozzle receptor 9 are installed with a gap and the formation of a chamber 10. which

through the hole 11 in the housing 7 is in communication with the atmosphere. A filter 12 is installed at the inlet to the nozzle supply 8. It is made in the form of a cylinder 13 with holes 14.

The pulsating pressure meter operates as follows.

First, the pulsating pressure source and pressure from the pipeline 6 are turned on, the passage 14 of the hole 14 in the cylinder 13 of the filter 12 goes to the supply nozzle 8. In it, the pulsating pressure turns into a dynamic (high-speed) alternating pressure, which passes the gap between the supply 8 and the receiving 9 nozzles and enters the receiving nozzle 9. In it, the dynamic (high-speed) alternating pressure turns into a pulsating pressure. It begins to fill flexible 4 and hard 3 pipelines, a three-way valve 2 and a pressure gauge 1. Then, the amplitude of the pulsating pressure in the measuring path grows and through

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a certain time reaches a maximum value. This process is fixed by pressure gauge 1. In this case, there will be no further filling of the measuring path, and an excess of pulsating pressure liquid will be discharged through the gap between the supplying 8 and receiving 9 nozzles into the chamber 10 of the housing 7 of the jet separator 5, and from it into the atmosphere through the holes 11. Thus, pressurization and transmission of pressure in the measuring path eliminates pressure fluctuations and allows pressure gauge 1 to measure the amplitude of the pulsating pressure in the pulse. Consequently, the use of the jet separator 5 made it possible to create two systems for measurement. One of them is transmitting, in this role is the jet splitter 5, while the other, measuring, it includes flexible 4 and hard 3 pipelines, a three-way valve 2 and a manometer. 1. There is a gap between the feeding 8 and receiving 9 nozzles and flexible 4 the pipeline provides smoothing of the amplitude of the pulsating pressure and its transmission to the manometer 1 along the measuring path (flexible 4 and hard 3 pipelines, three-way valve 2). However, during the operation of the pulsating pressure source in the pipeline 6, such processes can be observed when the pulsating pressure in the subsequent pulses becomes less or more than in the previous pulses. This will immediately be recorded by the pressure gauge 1 of the pulsating pressure meter.

To check the operation of the pulsating pressure meter, the handle of the three-way valve 2 must be placed in such a position that the pressure gauge 1 communicates with the atmosphere and the measurement path is disconnected. The pressure gauge 1 decreases from its maximum value to 0. Then, the handle of the three-way valve 2 should be turned to its original state and the pressure gauge 1 should be connected to the measuring path in this way. The pressure gauge 1 will indicate the magnitude of the amplitude of the pulsating pressure in the pulse. Thus, it should be noted that the simplicity of checking the operation of pressure gauge 1 and the time required for these operations are very small, i.e. The measuring system is more flexible, quick-acting and reliable.

Thus, while the source of the pulsating pressure to the pipeline 6 is operating, pressure gauge 1 shows the magnitude of the amplitude of the pulsating pressure in this particular operating mode, i.e. pulsating pressure meter automatically

follows the magnitude of the amplitude of the pulsating pressure in the pulse.

The pulsating pressure meter is taken out of operation by disconnecting the pulsating pressure source from line 6. However, the following processes will occur in the pulsating pressure meter. The magnitude of the amplitude of the pulsating pressure will be

decrease. This will be fixed by pressure gauge 1, and water from the measuring path, a three-way valve 2, hard 3 and flexible 4 pipelines and a receiving 9 nozzle of the jet separator 5 will expire into the gap

between the inlet 9 and the inlet 8 nozzles. And, from it through the chamber 10 of the housing 7 and the holes 11 into the atmosphere. The pressure in the measurement path decreases —from the magnitude of the amplitude of the high pulsating pressure in the pulse to atmospheric pressure. The pulsating pressure meter changes from an operational state to an idle state.

Installing a jet splitter between the flex and piping

with a pulsating pressure source, two autonomous systems for measuring the amplitude of the pulsating pressure can be created. The first of them transfers the amplitude of the pulsating pressure from

piping with a source of pulsating pressure to the measuring path / Second measuring piping includes flexible and rigid pipelines, a three-way valve and a pressure gauge. This provides smoothing,

the amplitude of the pulsating pressure and its transmission to the manometer along the measuring path.

The absence of a pulsating pressure meter in the measuring path of the rigid pipeline eliminates transients in it and increases the reliability of operation.

In addition, the proposed scheme provides automatic measurement of the amplitude of the pulsating pressure during operation of the pulsating pressure source on the pipeline. Any changes in the magnitude of the amplitude of the pulsating pressure will be recorded by a manometer.

All this generally increases the reliability of the pulsating pressure meter, the accuracy of the measurement and the automatic measurement of the amplitude of the pulsating pressure during operation of the pulsating pressure meter, i.e. its amplitude in magnitude.

The proposed pulsating pressure meter has the following advantages over the prototype: increased reliability due to the use of a jet separator and measuring path in the form of flexible and rigid pipelines, a three-way valve; improving measurement accuracy by using two measurement systems (transmitting and measuring) in the measurement system; simplicity of construction; automatic measurement of the amplitude of the pulsating pressure due to constant hydraulic communication.

These advantages are achieved due to the fact that the pulsating pressure meter is additionally equipped with a jet separator installed between the pulsating pressure source and the flexible conduit, and the jet separator is made in the form of a housing, inside which a feed and a receiving nozzle are installed with a gap to form a chamber connected to. /.

the atmosphere, and a filter is installed in front of the supply nozzle at the pulsating pressure source.

Claims (1)

The claims A pulsating pressure meter comprising a pressure gauge configured to be connected through a valve by means of rigid and flexible pipelines with a pulsating pressure source, characterized in that, in order to increase the reliability of operation, it is additionally equipped with a jet separator, installed at the inlet of the flexible pipeline, made in the form of a housing inside of which a feed and a receiving nozzle are installed with a gap in front of the feeding nozzle, and in the housing is made camera connected to the atmosphere. 5 G UUuUOch- 1PL Lucca. 5 . with.