Control method of leaks of pipelines of process tunnel. RU patent 2507440.
 Method of test for leakage of isolation valves of linear part of main oil pipeline in operation / 2499986During test for leakage of isolation valve of linear part of main oil pipeline, during which pressure is created in oil pipeline by lattice diagram, the highest pressure is created in the left and then in the right end sections, pressure differentials are made equal to static pressure subject to longitudinal profile of oil pipeline, and as a working agent for test pressure creation pumpage is used. |
 System to monitor condition of pipeline with hydraulic energy module and method for its realisation / 2499181System comprises the main pipeline, an electrically driven gate valve, facilities of measurement of processes, a central dispatching station with transceiving equipment and a recording device, accumulator batteries, a power cabinet, a microprocessor controller, a bypass line. At the same time the bypass line is tightly connected with the main pipeline upstream and downstream the electrically driven valve. Also the system comprises inverters, a hydraulic turbine, a power takeoff coupling, a power generator with a charging device, an internal combustion engine. The method includes collection of information on system parameters, its processing, data recording, transfer, reception, processing of a signal to actuating mechanisms, implementation of control at the central dispatching station over the processed information on parameters of the system and its processing with identification of emergency deviations of system parameters as a result of their comparison in the microprocessor controller. |
 Method of detecting leaks of oil product, water or other fluids at pipeline ruptures / 2487293Definite quantity of control device is installed along pipeline at saddles to detect, either visually or via radio signals, the points of fluid leaks. In case leas are detected and fluid gets into control device, signal flag opens to be detected visually or to make pickup operate to transmit signal to control station. |
 Safety control in repair at main pipelines and system to this end / 2484361Main pipeline lengthy section is shut off to bleed gas. Presence or absence of condensate is defined and temporary holes are made to fit temporary union seals 6 therein in direction of valves 6 to be shut off. Air or inert gas is forced into device 5. Pipeline section between devices 5 is blown by nitrogen unless complete elimination of gas content inside the pipe. Temporary seals 6 are fitted via every hole in direction of repair jobs. Wireless inflammable continuous-operation transducers 1, 2 are fitted in every hole and at the point of repair. Wireless inflammable pressure gages 3, 4 measure operating pressure in said seals 5, 6 and overpressure between device 5 and shutoff valves 18. Data is loaded into software whereat concentration and pressure thresholds in device 5, 6 and overpressure in pipeline are used to monitor operating conditions. Gate 13 allows controlling self-organising network and data exchange with software installed at industrial notebook 8. |
 Automatic pilotless diagnostics complex / 2480728Invention may be used for remote control of the state of main gas lines and storages by means of diagnostics hardware arranged at remote-control drone. Proposed complex comprises remote-control drone with control system equipped with inertial and satellite navigation systems, radio beacon, air-speed signal system, radio altimeters, automatic remote control system, surveillance TV system, radio telemetry system, drone onboard hardware automatic control system, radio transponder, onboard data storage, gas mains diagnostics system, ground control system with control board, launching catapult, rescue system, and self-contained transponder secured to balloon. Radio telemetry system comprises two radio stations arranged at drone and ground mobile station for duplex radio communication between drone and said ground mobile control station. |
 Method of defining fluid pressure wave propagation velocity in pipeline / 2476763Proposed method comprises making time markers with preset interval, measuring simultaneously the transferred medium pressure in two sections at every end of control pipeline lengths spaced 0.001 to 0.04 of pipeline length apart, comparing said measured pressures, and recording pressure wave at synchronous leaks at both ends of pressure stepwise variation section. Stepwise pressure change in internal section at one end of pipeline length occurs earlier than in external section while at another end said change occurs later. Fluid pressure wave propagation direction and velocity are defined by aforesaid time markers corresponding to said stepwise variation to control said velocity. |
 Method for diagnostics of heating main / 2476762Method consists in monitoring of coolant flow. Coolant temperature and flow are measured in supply and return pipelines of each heat consumer connected to a heating main. If coolant temperature in a supply or a return pipeline in any heat consumer increases, and value of coolant flow does not change with simultaneous reduction of coolant temperature in a similar pipeline in the next heat consumer along the coolant flow, a conclusion is made on availability of a leakage or on unauthorised extraction of the coolant on the section of the heating main between such heat consumers. |
 Control device of gas-condensate pipeline soundness / 2464485Device includes shore-based processing and recording equipment with remote power supply and underwater communication cable connecting sea and shore-based equipment. Along the controlled route, at connection points of pipes to each other there fixed are yokes with specified pitch (up to 10 km from each other), each of which consists of two semi-rings connected to each other by means of hinges on one side and by means of two bolts on the other side. Tight fixed shell is welded to each yoke; inside that shell there located is movable shell with a spring pressing it to yoke housing; vibration sensor and sensor for determination of vertical to earth surface and temperature, which are located on board with electronic equipment, are fixed on the above movable shell. In fixed shell there fixed is tight connector connecting through the patch cable the vibration sensor, board with electronic equipment and sensors for determination of vertical to earth surface and temperature to sea couplings and underwater communication cable, to shore-based processing and recording equipment and to remote power supply. |
 Combined hydroacoustic system for detection of oil product pipeline / 2462656System to detect leaks of an oil product pipeline comprises a central server to monitor condition of oil product pipeline tightness joined into at least one information-computer local network with at least two units for detection of leaks on the oil product pipeline arranged along it, which are placed in appropriate at least two points of oil product pipeline tightness condition monitoring. Each unit of leak detection on an oil product pipeline comprises a controller, an analog-to-digital converter, a unit of signal filtration. Each unit comprises at least one sensor of excessive pressure and at least one hydrophone arranged as capable of contact with a liquid oil product pumped along the oil product pipeline. Outlets of the excessive pressure sensor and hydrophone are connected via a unit of filtration of signals with an inlet of analog-to-digital converter connected by outlets with controller inlets. The controller is made as capable of connection with its outlet to the information-computer local network. |
 System for control over tightness of main gas pipeline stop ball valve / 2460936Proposed system comprises drain tube communicated with ball valve inner chamber, high-pressure and low-pressure pulse tubes communicating high- and low-pressure gas pipelines with drain tube, as well as five gate valves and gas meter integrated into circuit to define gas flow through, in turn, first and second seals and, finally, total gas flow through both seals. Results of measurements are used to diagnose gas leaks via ball valve shaft. |
 Device for detecting leakage / 2246659Device comprises penetrable manifold (1) connected with pump (2) for fluid to be transported and with at least one pickup (4a) for material (M) leaked. Manifold (1) is provided with sources (7) of gas (G) to be detected, and each pickup (4a) is provided with gas pickup (4b). |
 Method and device for detecting leakage site in pipeline / 2249802Method comprises receiving noise of discharging jet with the use of two acoustical pickups, converting the noise into voltage, digitization, filtering, and analyzing. The acoustical pickups are set at one site of the pipeline. One of the pickups receives acoustical waves, which propagate over the shell of the pipeline. The second one receives acoustical waves which propagate in the ambient fluid. The signal received are analyzed to determine co-spectra, and the values of the real and imaginary parts of the co-spectra indicate time lag between the signals which propagate in two fluids. |
 Method and device for detecting leakage in pressure pipeline / 2250443Device comprises transmitter, two receivers, transmitting aerial, two receiving aerials, phase detector, output voltmeter, synchronizer, time delay unit, switches, oscillator, mixer, amplifier of intermediate frequency, five multipliers, narrow-band filter, amplitude limiter, comparator, and indicator. The method includes comparing the measured value of the phase shift with the reference value of the constant voltage proportional to the measured phase shift, shifting the phase by 90°, multiplying the initial and shifted constant voltage twice, multiplying initial and shifted by 90° constant voltage of the second power with the use of scaling factor KM = 6, subtracting the voltage obtained from the initial voltage of the fourth power, and summing the voltage obtained and constant voltage of fourth power shifted in phase by 90°. |
 Automatic unmanned diagnostic complex / 2256894Proposed automatic unmanned diagnostic complex includes automatic control system, global navigational system satellites, navigational system, inertial navigational system, receiving equipment of satellite navigational system, satellite navigational system actual coordinate computer, radio beacon, air velocity signal system, small-sized altimeter for low altitudes, automatic remote control system, radio control command system, information logic unit, receiving equipment for command radio control system, observation TV system, radio telemetry system, automatic control system for on-board equipment with computer, engine control system, automatic control system computer, radio translator, on-board system control unit, on-board information storage, landing system and parachute deployment system; diagnostic system for gas mains, radio altimeter, ground control points, catapult launcher and rescue system. Radio telemetry system includes two radio stations located on remotely-controlled flying vehicle and on ground control point; each of them includes radio-frequency oscillator, phase manipulator, discrete information and command source, first mixer, first heterodyne, first intermediate frequency amplifier, first power amplifier, duplexer, transceiving antenna, second power amplifier, second mixer, second heterodyne, second intermediate frequency amplifier, multiplier, band-pass filter and phase detector. |
 Method of remote control of pipeline condition in permafrost zone / 2260742Method comprises radiolocation interferometric survey from the repeatable orbits of satellites when the distance between the trajectories of the satellite (interferometric base) is no more than 500 m. For each element of the radiolocation image obtained at different moments of time the phase difference of signals is determined which contains information on the movement of the reflecting surfaces and relief. The topographic phase difference caused by the relief is then calculated from the model of relief and survey geometry. The phase difference indicates the dynamic phase difference during the interval between the surveys for the given pair of phase differences. The vertical component of movements of the reflecting surface is then calculated during the time interval between the surveys of the pipeline on the ground surface from the formula proposed. |
 Method for detection of disruptions of insulating cover of underground pipeline / 2263333As source of electromagnetic field of cathode protection of pipeline is used. Depth of position of pipeline axis is determined on basis of magnetic transverse, longitudinal and vertical components of electromagnetic field of current of cathode protection of pipeline. longitudinal electric component of electromagnetic current field of cathode protection is measured and transverse component of electromagnetic field of current of cathode protection on the left and right from pipeline axes. Results of measurements are made normal for depth of pipeline, resistance of environment, surrounding pipeline, current force in pipeline, background components of electromagnetic fields. On basis of heightened values of normal electric components of electromagnetic field of cathode protection current position and size of disruptions of isolating cover of pipeline are detected. |
 Device for testing pipeline / 2264578Device comprises protecting cartridge, converter of electric resistance of the space between the pipeline and cartridge, battery with a voltage stabilizer, pickup of the pipeline corrosion, pickup of the stress-deforming condition of the pipeline, pickup of leakage of fluid transported, two resistance-voltage converters, two normalizing amplifiers, multiplexer, analog-digital voltage converter, radio modem, microprocessor, and working station of the monitoring center. The battery is permanently charged from the device of cathode protection. The digital information is send to the working station by means of the radio modem. The unit for transmitting the digital information through the pipeline is a reserve one. |
 Daily water losses determination method for residential buildin / 2265155Method for daily losses determination with the use of water flow parameters involves measuring specific water flow rate and average water head in the building at night; using necessary water head in the building worked out by design organization; calculating k and qloss0 coefficients with the use of regression analysis method; determining daily water losses with the use of above values from the following formula: qd loss=21[qloss0+k(Hav-Hd)], where qloss0 is specific one hour's water losses under demanded water head; k is regression coefficient; Hav is average water head in the building, Hd is demanded water head in the building. |
 Tool-defectoscope for detecting openings in pipeline / 2265816Tool-defectoscope has pickups for converting variation of local stress of pipe metal field into electrical signal. The pickups are secured to the flexible plates and is additionally provided with phase-sensitive amplifier. Each bridge circuit of the pickup has three inductive coils and three fixed reference resistors and two variable resistors. The inductive coils are connected in series with plates. The first reference resistor is connected in series with the intermediate plate and inductive coil. The values of inductivities of the inductive coils and capacities of plates provide their reactivity resistance to be equal and signs to be opposite. The fixed and variable resistors are connected in the bridge arms whose leads are signaling ones and connected with the inputs of the electronic unit. The leads of the first reference resistor are connected with the first input of the phase-sensitive amplifier. The second input of the first reference amplifier is connected with the output of the generator of high-frequency voltage. |
 Method of detection of cleaning devices being transported inside a pipeline and interfaces of oil products there / 2267695The invention is pertaining to pipeline transportation, in particular, to transportation of oil and oil processing products by pipelines. The method of detection of the of the cleaning devices being transported inside pipelines and the interfaces of the oil products there includes a periodic emission of a probing acoustic pulse signal into a controlled section of the pipeline, reception of the reflected acoustic signals from the controlled section of the pipeline, conversion of the received acoustic signals into electrical signals, formation of a useful signal, measuring and storing of its amplitude, measuring after each emission of the probing signal of the probing time. If at that the amplitude of the useful signal exceeds the first threshold level, then conduct storing of the time of the probing, calculate using M last stored values of the probing time its average value, conduct a sample out of L last values of which and also store, after each measurement of a probing time conduct deduction from L-th average value of the probing time of the first value of sampling and if the modulus of the difference exceeds the defined value, then form and give a signal indicating the start of a fresh consignment of petroleum. The technical result of the invention is that the method allows to expand functionalities of the detection devices used to realize the method, in particular, in addition to detect interfaces of the lots of petroleum, which are transported in one pipeline without use of the separating devices. |
FIELD: machine building.
SUBSTANCE: method involves measurement of liquid level in a controlled compartment of a tunnel, which is made in its lower part, by means of vibration sensors of limit liquid level, which are installed on a vertically oriented support located close to end sections of protective casings of pipelines. Vibration sensors are arranged on the support by means of fasteners one above another, and an emergency leak discharge tray is made opposite the support.
EFFECT: modern and reliable prevention of a potential accident, which allows avoiding contamination of the environment with oil products in case of pipe leakage.
2 dwg
The invention relates to the field of control of technological processes of operation of pipelines, namely to control the technical condition of the pipeline, designed for the transport of viscous liquids.
Leakage of oil from the pipeline due to various reasons are causing considerable economic and ecological damage. The costs of restoring the damaged natural balance, as a result of oil products pollution greatly exceed the cost of losses, it can be hard to repair the damage caused to nature in full. The main reason for defining the amount of leakage technical condition of the pipes and other elements of the system of technological pipelines in the tunnel. Analysis of the technical state of pipelines inside the technological tunnel is in need of repair or replacement of the pipeline.
Currently uses a variety of systems and methods for the control of the viscous fluid leaks from pipelines.
In particular, all the underground section is oil and goods pipe line wrap the pipe. In the tube space pour liquid and set the pressure sensor. When oil and goods pipe line breaks, in the annular space increases the pressure. The use of the technique is not economically expedient for long, pipeline sections.
Leakage of a viscous liquid is collected in a special container, where the sensor is a float that when "surfacing" closes the contact group and signal about the leak comes to a computer that controls the technological recycled product. The drawback of this technology is that there is a probability of blockage of pipelines, in addition problematic to define a condition of drainage pipelines.
A common shortcoming of the above-mentioned technologies control of pipeline leaks is that the location of the sensors control of leaks in the annular space of unattended tunnel does not allow for repair or replacement of sensors in the event of a fault.
Object of the present invention is to provide a method of control viscous fluid leaks from the pipeline unattended engineering tunnel, enabling timely and reliably prevent possible accident and enabling timely avoid environmental pollution with petroleum products leaking pipes, and of the associated potential cost of restoration ecology.
The technical result of the proposed invention is the ability to repair or replacement of sensors to detect leaks in the event of a fault.
The specified task and technical result achieved by the fact that the way to control fluid leaks from pipelines unattended engineering tunnel, includes measurement of the liquid level in a controlled compartment tunnel, made in the lower part, by means of vibration sensors limit level of liquids installed on a vertically oriented support available in the immediate vicinity of end sections of protective casings pipelines, vibration sensors placed on a support with fasteners one over the other, but on the contrary support tray made for emergency discharge of leaks.
1 is a cross-section of a place of an exit of pipelines of technological tunnel;
Figure 2 shows the cross-section A in figure 1.
The presented drawings are shown vertically oriented pillar 1, 2 pipelines, fastening elements 3, vibration sensor 4, and tray 5 for emergency discharge of leakage (figure 1, figure 2), the estimated release of the liquid 6, annular space 7, guard 8 and technological tunnel 9 (figure 2).
This method of control of fluid leakage from pipelines unattended engineering tunnel is as follows.
Pipes 2 in technological tunnel 9 laid in enclosures 8, having a diameter larger than the diameter of the pipeline 2. In this regard, a so-called "inter-tube space". Thus, in case of pressure loss pipeline 2 anywhere on the entire length of unattended engineering tunnel 9 outlet piping 2 in the place of face sites of protective casings 8 pipelines 2 takes place by the expiration of a liquid from the annulus 7 in the zone of action of vibration sensors with 4. The invention is based on the application of ways to control fluid loss in a controlled compartment unattended engineering tunnel 9, made in the bottom of the tunnel. Vibration sensors 4, to increase the likelihood of triggering placed one above the other, and the resulting signal is sent to the automated workplace of the Manager to the operator tank farms (Fig. not specified).
In the event of fluid leakage from the pipeline 2 leaving the zone of action of vibration sensors 4 part of the liquid, which managed to escape from the annulus 7 enters the tray for emergency discharge of leaks.
Vibration sensors 4 are placed on a vertically oriented support 1, which may be a brick wall or a metal support (round or square pipes). The choice of the basis for mounting the sensors can be made during design work.
Vibration sensors 4 can be set one above the other with the enlargement of their distance from the vertically oriented support 1, thus it is possible to apply certain algorithm and define the intensity of leakage.
Thus, it provides timely notification Manager about the appearance of leakage of liquid in a controlled compartment unattended engineering tunnel 9, which in turn would immediately write off the fluid supply (oil) through a pipeline 2, and therefore prevent the extremely undesirable environmental pollution. In addition, the reliability of the proposed method is provided that is capable of producing repair or replacement of vibration sensors, because they are accessible controlled compartment unattended engineering tunnel 9.
The way to control fluid leaks from pipelines unattended engineering tunnel, including measurement of fluid level in a controlled compartment tunnel, made in the lower part, by means of vibration sensors limit level of liquids installed on a vertically oriented support available in the immediate vicinity of end sections of protective casings pipelines, vibration sensors placed on a support with fasteners one over the other, but on the contrary support tray made for emergency discharge of leaks.