WO2007049993A1 - Procede destine a la protection d'un defectoscope fonctionnant a l'interieur d'un tuyau et dispositif du systeme de protection - Google Patents

Procede destine a la protection d'un defectoscope fonctionnant a l'interieur d'un tuyau et dispositif du systeme de protection Download PDF

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Publication number
WO2007049993A1
WO2007049993A1 PCT/RU2006/000557 RU2006000557W WO2007049993A1 WO 2007049993 A1 WO2007049993 A1 WO 2007049993A1 RU 2006000557 W RU2006000557 W RU 2006000557W WO 2007049993 A1 WO2007049993 A1 WO 2007049993A1
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WO
WIPO (PCT)
Prior art keywords
flaw detector
pressure
section
switch
power supply
Prior art date
Application number
PCT/RU2006/000557
Other languages
English (en)
Russian (ru)
Inventor
Alexandr Maximilyanovich Popovich
Mikhail Dmitrievich Kostkin
Svyatoslav Evgenievich Lisin
Original Assignee
Popovich Alexandr Maximilyanov
Mikhail Dmitrievich Kostkin
Svyatoslav Evgenievich Lisin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Popovich Alexandr Maximilyanov, Mikhail Dmitrievich Kostkin, Svyatoslav Evgenievich Lisin filed Critical Popovich Alexandr Maximilyanov
Publication of WO2007049993A1 publication Critical patent/WO2007049993A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/08—Protection of installations or persons from the effects of high voltage induced in the pipe-line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures

Definitions

  • the invention relates to methods and devices for protecting an in-line flaw detector and pipeline from a possible explosion in explosive areas of the pipeline, where an air-carbon gas mixture is formed, arising from a spark discharge in an electric circuit.
  • Passive methods include spark suppression by shunting the load or contacts of switches.
  • Active methods include active actions aimed at eliminating the possibility of an explosion.
  • the well-known “Method of data exchange and control of in-pipe objects)) according to patent RU 2216686, published on November 20, 2003.
  • the method is carried out by emitting electromagnetic waves inside or outside the pipeline and receiving said oscillations from the opposite side with respect to the pipeline wall.
  • electrical signals are generated corresponding to the received electromagnetic waves.
  • the method can be carried out in hazardous areas, because it uses a low-power radio link with a projectile with antennas, the inductance of which is small.
  • the task of actively controlling the electrical power of the instruments and devices of the in-line flaw detector is not solved in order to ensure a safe operating mode of the flaw detector.
  • the claimed inventions solve the problem of protecting the in-line flaw detector and pipeline from a possible explosion by actively controlling the electrical power of the instruments and devices of the in-line flaw detector in the explosive areas of the pipeline, where an air-carbon gas mixture is formed or may be formed.
  • the inventive method of protection against explosion during the operation of an in-line flaw detector is that the power supply of the flaw detector is turned off if there is no excess pressure compared to atmospheric pressure in the environment.
  • Explosive zones during the operation of an in-line flaw detector are those where there is an explosive mixture - a mixture of gas (methane) and oxygen transported through the pipeline.
  • Such mixtures can be formed during stocking - placing an in-tube flaw detector in the launch chamber, and grazing - removing the flaw detector from the receiving chamber.
  • the absence of movement of the in-tube flaw detector in the pipe is additionally determined, and the power supply of the flaw detector is turned off only if there is no movement of the flaw detector in the pipe.
  • Such an implementation of the method avoids turning off the electrical power to the instruments and flaw detector devices when moving in a pipe in an explosion-proof zone, since due to pulsations of the gas pressure in the pipeline it can sometimes drop to atmospheric pressure.
  • the inventive device protection system of an in-line flaw detector contains at least one section of an in-line flaw detector containing an electrical power source for instruments and devices of a flaw detector, an electric power supply switch and a pressure monitoring device connected by a pressure transmitter installed to measure pressure in the environment surrounding the section.
  • the pressure control device is connected to the switch of the electric power source with the ability to control the switch to turn off the power in the absence in the surrounding section of the medium of excess, compared with atmospheric pressure.
  • the pressure control device is made in the form of an electric device and contains a low-power power source for its electric power supply.
  • connection between the pressure control device and the switch may include a resistor, which is an element that limits the current in the control circuit of the switch and thereby prevents the occurrence of a spark discharge.
  • the electrical power supply of instruments and devices and the switch of the electric power supply can be placed in one section of the flaw detector, and the pressure control device in the other section of the flaw detector.
  • the device may further comprise a sensor for detecting the lack of movement of the in-line flaw detector in the pipe, while the output of the sensor for detecting the absence of movement of the in-line flaw detector and the output of the said pressure monitoring device are connected according to the “I” scheme, with the possibility of controlling the switch of the electric power source to turn off the power.
  • FIG. 1 is a diagram of a device for protecting an in-line flaw detector
  • FIG. 2 is a second embodiment of the device.
  • the method of protection against explosion during operation of an in-line flaw detector is considered not as an example of operation of the device shown in FIG. one.
  • the device protection system in-line flaw detector contains in this embodiment two sections.
  • Section 1 contains instruments and devices that ensure the operation of the flaw detector (not shown in the figure).
  • section 1 contains a pressure monitoring device 5 connected to a pressure sensor 6 mounted to measure pressure in the environment surrounding the section.
  • the pressure control device 5 is powered by a low-power power supply 7.
  • Section 2 contains an electric power supply 3 of the flaw detector devices and devices and a switch 4 of the electric power supply 3.
  • An electric power supply 3 provides electric power to the flaw detector devices and devices, including section 1, s help distributor 11.
  • a pressure monitoring device 5 is connected to a switch 4 through a control circuit through a spark-extinguishing resistor 8.
  • the pressure monitoring device 5 gives a signal about the possibility of turning on the power supply of the flaw detector, only if the pressure sensor 6 indicates that the pressure in the environment surrounding the flaw detector is higher than atmospheric and therefore, the flaw detector is in an explosion-proof environment.
  • the pressure control device is an electric device, a resistor 8 is installed.
  • the pressure control device can be implemented, in particular, in the form of a pneumatic or hydraulic device.
  • the power supply to the flaw detector is turned off only when two factors are combined: when there is no excess pressure compared to atmospheric pressure in the environment and if there is no flaw detector movement in the pipe.
  • the device for protecting an in-line flaw detector contains two sections in this embodiment.
  • Section 1 comprises a pressure monitoring device 5 connected to a pressure sensor 6.
  • the pressure monitoring device 5 is powered by a low-power power supply 7.
  • section 1 is also placed a sensor 9 for detecting the absence of movement of the in-pipe flaw detector in the pipe.
  • An odometer may be used as such a sensor.
  • the output of the pressure monitoring device 5 is connected to one input of the “AND” circuit 10, to the other input of which the output of the sensor 9 for determining the absence of movement is connected.
  • Section 2 contains an electric power source 3 of the flaw detector devices and devices and a switch 4 of an electric power source 3.
  • An electric power source 3 provides an electric power supply of flaw detector instruments and devices, including in section 1, using distributor 11.
  • the pressure control device 5 gives a signal to turn off the power, which is fed to the input of the circuit "And". If the flaw detector does not move, then a signal is also received from the sensor 9 for determining the absence of movement. In this case, according to the control signal coming from the output of the “And” circuit, switch 4 turns off the power source 3. However, if the flaw detector is moving, then the signal to turn off the power does not come from the motion sensor and switch 4 does not turn off the power source 3.
  • the power is turned off when there are two factors: the absence in the environment of excessive pressure compared to atmospheric pressure and in the absence of a flaw detector. This situation is typical when placing an in-line flaw detector in the launch and reception chambers.
  • the device protection system of the in-line flaw detector is a stand-alone device, since the energy-consuming components, in particular, the pressure monitoring device 5, are powered by low-power sources, which prevents sparking. To reduce the risk of spark discharge, along with this active method, it is possible to use passive methods of protection against sparking when the electric power is turned on.
  • the device of the protection system operates independently of the control system of the flaw detector, including the power-on system, which, subject to the method of explosion-proof operation, can be switched off using other circuits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention concerne des procédés et des dispositifs destinés à la protection d'un défectoscope à l'intérieur d'un tuyau et d'une tuyauterie contre une éventuelle explosion pouvant être provoquée par une décharge d'étincelles dans un circuit électrique à l'intérieur des zones à danger d'explosion d'une tuyauterie dans laquelle un mélange air / hydrocarbures peut se former. Le procédé de protection contre l'explosion lors du fonctionnement du défectoscope à l'intérieur d'un tuyau consiste à débrancher l'alimentation électrique du défectoscope en l'absence dans le milieu environnant d'une pression excessive par rapport à la pression atmosphérique. Le dispositif du système de protection du défectoscope à l'intérieur d'un tuyau comprend au moins une section du défectoscope à l'intérieur d'un tuyau comprenant une source d'alimentation électrique d'instruments et de dispositifs du défectoscope (7), un interrupteur (4) de la source d'alimentation électrique et un dispositif de contrôle de pression (5) connecté à un capteur de pression (6) monté de manière à pouvoir mesurer la pression dans l'environnement, qui entoure la section. Le dispositif de contrôle de pression est connecté à l'interrupteur de la source d'alimentation électrique de manière à pouvoir commander l'interrupteur pour débrancher l'alimentation en cas d'absence dans le milieu environnant d'une pression excessive par rapport à la pression atmosphérique
PCT/RU2006/000557 2005-10-26 2006-10-23 Procede destine a la protection d'un defectoscope fonctionnant a l'interieur d'un tuyau et dispositif du systeme de protection WO2007049993A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005134505 2005-10-26
RU2005134505/06A RU2301940C1 (ru) 2005-10-26 2005-10-26 Способ защиты от взрыва при работе внутритрубного дефектоскопа и устройство системы защиты

Publications (1)

Publication Number Publication Date
WO2007049993A1 true WO2007049993A1 (fr) 2007-05-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2006/000557 WO2007049993A1 (fr) 2005-10-26 2006-10-23 Procede destine a la protection d'un defectoscope fonctionnant a l'interieur d'un tuyau et dispositif du systeme de protection

Country Status (2)

Country Link
RU (1) RU2301940C1 (fr)
WO (1) WO2007049993A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013122506A1 (fr) * 2012-02-15 2013-08-22 Otkrytoe Aktsionernoe Obschestvo "Gazprom" Procédé pour protéger de l'explosion un outil d'inspection en ligne et dispositif de système de protection anti-explosion correspondant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2692875C1 (ru) * 2018-10-29 2019-06-28 Публичное акционерное общество "Транснефть" (ПАО "Транснефть") Взрывозащищенное внутритрубное устройство

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700779A1 (de) * 1997-01-11 1998-07-16 Sze Spezial Elektronik Hagenuk T-Weiche für Überwachungsvorrichtung in Rohrleitungsnetzen
RU2216686C1 (ru) * 2002-07-12 2003-11-20 ЗАО "Нефтегазкомплектсервис" Способ обмена данными и управления внутритрубными объектами
RU2003125678A (ru) * 2003-08-20 2005-02-20 Открытое акционерное общество Акционерна компани Открытое акционерное общество Акционерна компани по транспорту нефти "Транснефть" (RU) по транспорту нефти "Транснефть" (RU) Дефектоскоп для взрывобезопасного контроля трубопроводов

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700779A1 (de) * 1997-01-11 1998-07-16 Sze Spezial Elektronik Hagenuk T-Weiche für Überwachungsvorrichtung in Rohrleitungsnetzen
RU2216686C1 (ru) * 2002-07-12 2003-11-20 ЗАО "Нефтегазкомплектсервис" Способ обмена данными и управления внутритрубными объектами
RU2003125678A (ru) * 2003-08-20 2005-02-20 Открытое акционерное общество Акционерна компани Открытое акционерное общество Акционерна компани по транспорту нефти "Транснефть" (RU) по транспорту нефти "Транснефть" (RU) Дефектоскоп для взрывобезопасного контроля трубопроводов

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013122506A1 (fr) * 2012-02-15 2013-08-22 Otkrytoe Aktsionernoe Obschestvo "Gazprom" Procédé pour protéger de l'explosion un outil d'inspection en ligne et dispositif de système de protection anti-explosion correspondant

Also Published As

Publication number Publication date
RU2301940C1 (ru) 2007-06-27

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