RU2798453C1 - System for control of parameters of inert gas medium - Google Patents

Abstract

FIELD: measurements.

SUBSTANCE: invention relates to centralized measurement, visualization and registration of process parameters controlled during works on filling main pipelines with an inert gas mixture (IGM) using mobile nitrogen compressor units at a safe distance from the place of work. The claimed system includes a IGM parameter control unit and a remote registration and signalling unit. The IGM parameters control unit is made in the form of a section of a process pipeline with an inert gas mixture and includes a collector mounted on a frame with instruments for measuring the process parameters of an inert gas mixture installed on it: a flow converter, an oxygen gas analyser, a rotameter, a pressure gauge, a pressure sensor, a temperature sensor, and also pressure reducer and terminal box. The collector is made in the form of a pipeline section, to the free ends of which lugs are welded for connection to the process pipeline, on the side surface there are taps for connection to a mobile compressor nitrogen unit, and on the opposite side there is a branch pipe for connection to the main pipeline air vent. The IGM parameters control unit is connected to the remote registration and signalling unit via a cable communication line.

EFFECT: increased efficiency and completeness of the control of process parameters monitored during filling main pipelines with an inert gas mixture using mobile nitrogen compressor units, while ensuring the control safety.

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Description

SUBSTANCE: invention relates to centralized measurement, visualization and registration of technological parameters controlled during works on filling main pipelines with an inert gas mixture using mobile compressor nitrogen units, performed at a safe distance from the place of work.

State of the art

A method and system for measuring data in a pipeline for transporting a fluid, such as an oil and/or gas well, is known according to US 6241028 B1 (patentee: Shell Oil Company, IPC: E21B 23/00, E21B 47/00, E21B 47/12, published 06/05/2001). The system for measuring data in a pipeline for transporting a liquid contains at least one sensing device having a sensing device for measuring physical data, a data processor for processing the measured data, and a spherical containment containing a sensor and a data processor, which has a smaller diameter than the average internal width pipeline so that the liquid in the pipeline can pass along the edges of the shell. The system also includes a power means for investigating the operation of the sensors and data processors of each device for measuring and processing physical data in the conduit, releasing a mechanism for sequentially releasing one or more sensors in the conduit; and a data collection system located outside the channel, to which the data collected by the sensor device detection data processor is transmitted. One or more sensing devices are sequentially released in the channel and forced to move longitudinally through the channel to measure data at desired time intervals without requiring complex infrastructure.

The invention disclosed in US Pat. No. 6,241,028 B1 is easy to implement, but the invention is not intended to measure data in a gas pipeline.

Known systems and methods for optimizing the analysis of underground wells and fluids using inert gases according to the patent for the invention RU 2619613 C2 (patentee - Halliburton Energy Services, Inc., IPC E21B 49/00, publ. contains an information processing system, fluid measurement devices, a gas injection device, a gas extraction system and a gas analyzer, wherein one or more fluid measurement devices are communicatively connected to the information processing system and are configured to determine the volume or flow rate of one or more fluids. The gas injection device is designed to inject one or more inert gases into a fluid or well A gas recovery system allows the extraction of gas samples from fluids exiting the well A gas analyzer communicatively coupled to the information processing system , serves to receive one or more gas samples from the gas extraction system. The information processing system is configured to receive data from the gas analyzer regarding the presence of inert gases in gas samples and data from fluid measurement devices regarding the volume or flow rate of fluids introduced into or out of the well. The information processing system uses data obtained from the gas analyzer and fluid measurement devices to determine parameters selected from the group consisting of total well volume, well lag time, well flow characteristics, gas recovery system efficiency, and any combination thereof.

The design of the known system allows for operational monitoring and control of the fluid. At the same time, the implementation of the invention does not imply the possibility of analyzing the characteristics of the working medium in the absence of a fluid medium.

Description of the essence of the invention

The objective of the present invention is to eliminate the above disadvantages of the closest analogues of the invention.

The technical result of the present invention, achieved by its implementation, is to increase the efficiency and completeness of the control of technological parameters monitored during the performance of work on filling main pipelines with an inert gas mixture using mobile nitrogen compressor units, while ensuring the safety of the control.

The specified problem is solved, and the technical result is ensured due to the fact that the control system for parameters of the inert gaseous medium (IGS) contains a control unit for the parameters of the GMS and a remote recording and signaling unit, and the control unit is made in the form of a section of a process pipeline with an inert gas mixture, on which devices for measuring the technological parameters of an inert gas mixture, which are controlled when filling main pipelines with an inert gas mixture using mobile nitrogen compressor units, were installed. At the same time, the control unit for the parameters of the IGM includes a collector mounted on the frame, on which instruments for measuring the technological parameters of an inert gas mixture, a pressure reduction reducer and a terminal box are installed in series, and the instruments for measuring the technological parameters of an inert gas mixture are: a flow converter, an oxygen gas analyzer, a rotameter, a pressure gauge with a manometric cock, pressure sensor with a manometric cock, temperature sensor. The collector is made in the form of a pipeline section, to the free ends of which lugs are welded for connection to the process pipeline. On the side surface of the manifold there is at least one outlet with a tip for connection to a mobile compressor nitrogen unit. The flow converter, oxygen gas analyzer, pressure sensor and temperature sensor are connected to the terminal box and are configured to transfer measurement results to a remote recording and signaling unit.

In an additional embodiment, two or more outlets with lugs for connection to two or more mobile nitrogen compressor units, respectively, can be located on the side surface of the manifold.

In an additional embodiment, the GCI parameters control unit is connected to a remote registration and signaling unit via a cable communication line.

In an additional embodiment, the recording and signaling unit is configured to display the measurement results, light and sound alarms when the measured process parameters of the inert gas mixture go beyond the boundaries of the safe conduct of the process of filling main pipelines with an inert gas mixture.

In an additional embodiment, the registration and signaling unit is removed from the collector installation site at a distance of at least 50 m.

The claimed invention is illustrated by drawings (figures 1-4), which show: in Fig. 1 - a system for monitoring the parameters of an inert gaseous medium, in Fig. 2 - system for monitoring the parameters of an inert gaseous medium (side view with a terminal box), in Fig. 3 is a general view of the manifold, and in FIG. 4 is a diagram of the transmission of measurement results to a remote recording and signaling unit, and the numerical positions indicate:

1 - frame;

2 - collector;

3 - flow converter;

4 - oxygen gas analyzer;

5 - rotameter;

6 - pressure reducer;

7 - pressure gauge;

8 - manometric valve;

9 - pressure sensor;

10 - temperature sensor;

11 - tip;

12 - terminal box;

13 - registration and signaling unit;

14 - cable communication line;

15 - outlet for connection to a mobile compressor nitrogen unit.

Implementation of the invention

The claimed system for monitoring the parameters of an inert gaseous medium (IGS), shown in Fig. 1, serves to carry out work on measuring and transmitting technological parameters: flow rate, pressure, temperature, oxygen content in an inert gas mixture, carried out in the process of filling main pipelines with an inert gas mixture using mobile nitrogen compressor units. The developed technical solution allows for centralized control over the process of filling main pipelines with an inert gas mixture by maintenance personnel at a safe distance from the place of work.

The GCI parameters control system includes a GCI parameters control unit and a remote registration and signaling unit. The control unit is made in the form of a section of a process pipeline filled with an inert gas mixture, with installed instruments for measuring process parameters controlled when filling main pipelines with an inert gas mixture using mobile nitrogen compressor units.

The IGS parameters control unit contains a manifold 2 mounted on a frame 1. On the manifold 2 (see Fig. 1) there are instruments for measuring the technological parameters of an inert gas mixture, a pressure reduction reducer 6 and a terminal box 12 (see Fig. 2). At the same time, the devices for measuring the technological parameters of an inert gas mixture are sequentially installed flow converter 3, an oxygen gas analyzer 4, a rotameter 5, a pressure gauge 7, a pressure sensor 9 and a temperature sensor 10. When monitoring the parameters of an inert gas mixture, the flow converter 3 serves to measure the flow rate of the gas mixture passing through the section of the pipeline per unit time. The oxygen gas analyzer 4 is designed to determine the qualitative or quantitative composition of gas mixtures included in an inert gas mixture. Rotameter 5 is used to determine the volumetric flow rate of the gas mixture per unit time. The pressure reducer 6 reduces the pressure of the gas mixture at the outlet of the pipeline to the operating pressure and automatically maintains this pressure constant. Pressure gauge 7 and pressure sensor 9 are designed to measure the pressure of the gas mixture. Pressure gauge 7 and pressure sensor 9 are installed on manifold 2 through manometric valves 8.

Collector 2 is a pipeline section, to the free ends of which lugs 11 are welded for connection to the process pipeline. On the side surface of the collector 2 there is a branch 15 with a tip for connection to a mobile nitrogen compressor unit, through which the main pipelines are filled with an inert gas mixture. On the opposite side of the collector 2 there is a branch pipe (not shown in the drawings) with a flange connection for connection to the main pipeline air valve.

At the same time, in the preferred embodiment of the invention, on the side surface of the collector 2, there are two or more branches 15 with tips for connecting to two or more mobile nitrogen compressor units, respectively. In FIG. Figure 3 shows a variant of the collector 2 with three outlets 15 for connection to three mobile compressor nitrogen units (not shown in the drawing). Simultaneous connection of several mobile nitrogen compressor units to the IGS parameters control system can reduce the time for filling the main pipeline with an inert gas mixture.

In the control system of the GCI parameters, it is possible to transfer the results of measuring technological parameters - flow rate, pressure, temperature, oxygen content in an inert gas mixture - from the control unit of the GCI parameters to a remote recording and signaling unit 13. For this, the flow converter 3, the oxygen gas analyzer 4, the pressure sensor 9 and the temperature sensor 10 are connected by a cable communication line 14 to the terminal box 12 (Fig. 4), through which the indicators obtained by the instruments for measuring the technological parameters of an inert gas mixture, converted into electrical signals of a standard type, are transmitted to a remote recording and signaling unit 13. The remote registration and signaling unit 13, in the preferred embodiment, is connected to the terminal box 12 of the control unit of the GCI parameters via a cable communication line 14, made, for example, in the form of a control cable.

The registration and alarm unit 13 is designed to display the results of measurements, light and sound alarms when the measured technological parameters of the inert gas mixture go beyond the boundaries of the safe conduct of the process of filling the main pipelines with an inert gas mixture. To ensure the safety of the operating personnel who control the process parameters, the registration and signaling unit 13 must be located outside the danger zone, which is in close proximity to the place of work. In particular, the registration and signaling unit 13 can be removed from the installation site of the collector 2 at a distance of at least 50 m.

The claimed system for monitoring the parameters of the IGS works as follows.

After assembling the mobile compressor units and the IGS parameters control system into a single production line for filling the main pipeline with an inert gas mixture, the process parameters are monitored using equipment that is part of the IGS parameters control system. To do this, the registration and signaling unit 13 is supplied with electricity from the power supply (not shown in the drawings). The registration and signaling unit 13 is connected to the terminal box 12 of the IGS parameters control unit via a cable communication line 14. An inert gas mixture is supplied to the IGS parameters control unit through a collector outlet 2 for connection to a mobile nitrogen compressor unit at an operating pressure of up to P = 2.5 MPa. Next, according to the readings on the registrar of the registration and signaling unit 13, it is checked whether the GCI pressure values on the pressure gauge 7 correspond to the pressure of the supplied GCI. The temperature value of the GCI, measured by the temperature sensor 10, must correspond to the temperature of the supplied GCI. The GCI flow rate on the indicator of the flow converter 3 must correspond to the flow rate of the supplied GCI. The values of the oxygen content on the indicator of the oxygen gas analyzer 4 must correspond to the oxygen content of the supplied GCI. In the process of operation of the system for monitoring the parameters of the IGS, the registration and signaling unit 13 provides visualization of the measurement results and registration of the values of technological parameters. In the event that the controlled parameters go beyond the operating or emergency boundaries of the safe conduct of the technological process of filling the gas main pipelines, the recording and alarm unit 13 turns on a light and/or sound alarm to alert the operator.

Thus, due to its design, the claimed system for monitoring the parameters of an inert gas mixture ensures the achievement of the claimed technical result during operation - an increase in the efficiency and completeness of control of technological parameters monitored during the performance of work on filling main pipelines with an inert gas mixture using mobile nitrogen compressor units, while providing the safety of the control being carried out.

Claims (5)

1. A system for monitoring the parameters of an inert gaseous medium (IGS), containing a control unit for the parameters of the GMS and a remote recording and signaling unit, moreover, the unit for monitoring the parameters of the GGS is made in the form of a section of a process pipeline with an inert gas mixture, on which instruments for measuring the technological parameters of an inert gas mixture are installed. , controlled when filling the main pipelines with an inert gas mixture using mobile nitrogen compressor units, characterized in that the IGS parameters control unit includes a collector mounted on a frame, on which instruments for measuring the technological parameters of an inert gas mixture, a pressure reduction reducer and a terminal box are installed in series, with In this case, the instruments for measuring the technological parameters of an inert gas mixture are: a flow converter, an oxygen gas analyzer, a rotameter, a manometer with a manometric cock, a pressure sensor with a manometric cock, a temperature sensor, while the collector is made in the form of a pipeline section, to the free ends of which lugs are welded for connection to process pipeline, on the side surface of the collector there is at least one outlet with a tip for connection to a mobile compressor nitrogen unit, and the flow converter, oxygen gas analyzer, pressure sensor and temperature sensor are connected to the terminal box and are configured to transmit measurement results to a remote recording unit and alarms. 2. The control system according to claim. 1, characterized in that on the side surface of the collector there are two or more branches with tips for connecting to two or more mobile nitrogen compressor units, respectively. 3. The control system according to claim 1, characterized in that the GCI parameters control unit is connected to a remote recording and signaling unit via a cable communication line. 4. The control system according to claim 1, characterized in that the recording and signaling unit is configured to display the measurement results, light and sound alarms when the measured technological parameters of the inert gas mixture go beyond the boundaries of the safe conduct of the technological process of filling the main pipelines with an inert gas mixture. 5. The control system according to claim 1, characterized in that the registration and signaling unit is removed from the installation site of the collector at a distance of at least 50 m.

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