• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to a process for assembling steel pipes having limiting stops. The purpose of the invention is to increase the efficiency of the stopper. The threaded joint for steel pipes includes a male member 1 with an external thread 2 and a female member 3 with an internal thread 4 having at least one limiting stop 5 for interacting with a counter limiter 6 of the male member 1. Before screwing the pipes onto the external surface of the female element 3 at a distance of 5-20 mm from the plane of the limit stop in the direction opposite to its threaded end, secure the voltage sensor, oriented along the generatrix of the covering element 3 The pipes are then screwed in while monitoring the degree of deformation of the female element 3 at the level of the sensor and, when the required degree of deformation is reached, the tightening is stopped. In the initial screwing-in period prior to the contacting of the restriction lugs 5 and 6 of the female 3 and the female 1 elements, the external surface of the female element 3 is subjected to a compressive stress along the forming surface. When the lugs 5 and 6 interact, the outer surface of the female element 3 at the level of the voltage sensor experiences a tension stress. As a controlled parameter, the algebraic sum of the signals from the tightening moment and the degree of deformation can be used. 1 hp f-ly, 7 ill.
    公开号:SU1540661A3
    申请号:SU853964115
    申请日:1985-10-08
    公开日:1990-01-30
    发明作者:Рене Марсель Грар Дидье；Ив-Мари Огюст Салкин Эрве
    申请人:Валлурек (Фирма)；
    IPC主号:
    专利说明:

     Sh
    Fig. /
    element 1. Before screwing the pipes (on the outer surface of the enclosing element 3 at a distance of 5-20 mm from the plane of the restrictive abutment in the direction opposite to its threaded end, a stress sensor is fixed, oriented along the generatrix of the enclosing element 3. Then simultaneously monitoring the degree of deformation of the enclosing element 3 at the level of the sensor and when the required degree of deformation is reached, stopping is stopped. B the initial period, the invention relates to the technological process Steel pipe processing processes with restrictive stops, and can be used in various industries.
    The purpose of the invention is to increase the efficiency of the fixing due to the identity of the characteristics.
    In Fig. 1) a pipe connection is shown containing tapered threads and restrictive stops located inside the female element and at the end of the male element before their interaction, a section; 2, the same when the pipe connection is fully tightened; Fig. 3 shows a device that presses a voltage sensor to a pipe; Fig. 4 is a section clamping device that presses a voltage sensor to a female member; Fig. 3 shows a theoretical change in the longitudinal deformations of the female member of the joint shown in Fig. 1; o2; Fig. 6 shows a theoretical change in the longitudinal deformations of the female member of connections having cylindrical threads and limiting stops; figure 7 - the actual curves of the moment of forces and deformation of the outer surface of the female element.
    The method of screwing threaded connections for steel pipes is implemented as follows.
    Steel pipes, including male element 1 with an external thread 2 and female element 3 with an internal thread 4, the corresponding external thread 2 and having at least
    screwing up to the contact of the limit stops 5 and 6 of the female 3 and the male 1 elements, the external surface of the female element 3 is tested along the generating compressive voltage. When the lugs 5 and 6 interact, the outer surface of the female element 3 at the level of the voltage sensor experiences a tension stress. As a controlled parameter, the algebraic sum of the signals from the tightening moment and the degree of deformation can be used. 1 z.Po f-ly, 7 ill.
    one restrictive stop 5 for engagement with the male restrictive stop 6 of the male element 1 is screwed by means of tightening the threaded connection to
    the desired value of the monitored parameter.
    Before screwing the pipes onto the outer surface of the female element 3 at a distance D of 5-2Q mm
    From the plane of the limit stop 5 in the direction opposite to the threaded end 4, the voltage sensor 7 is fixed by means of the fastening device 8. The voltage sensor 7
    oriented so as to measure the longitudinal deformations along the generatrix of the enclosing element 3. As a monitored parameter, either the longitudinal tensile deformation or the longitudinal compressive deformation of the enclosing element 3 at the level of the voltage sensor 7, or the algebraic sum of the electrical signals representing by myself
    on the one hand, the applied moment, and on the other hand, the longitudinal deformation of the female element 3 along the generatrix at the level of the same voltage sensor 7.
    After reaching the required tightening torque, characterized by an algebraic sum of electrical signals corresponding to the applied torque and longitudinal deformation of the female element 3, respectively, a predetermined moment is applied to the pipes or the pipes are additionally screwed to a predetermined angle of rotation. In the process of screwing pipes with tightening tools, the male element 1 in the thread section 2 has a diameter greater than the internal diameter of the internal thread 4 of the male element 3 as the male element 1 is screwed into the female element 3 (as long as the surfaces of the stop stops 5 and 6 will not come into contact) there is an increase in the diameter of the female element 3, which is depicted in Figure 1 by the dotted line 9. The deformation (i.e., an increase in the diameter of the female element 3) extends beyond the plane of the stop stop 5. The deformation of the female element 3 is expressed in longitudinal compression and transverse stretching of its outer surface along its forming and in perpendicular to it direction, respectively.
    With the final screwing of the pipes with the required tightening torque, the limiting stops 5 and 6 of the female 3 and male 1 elements interact with each other, with further deformation of the external surface of the female element 3, which is shown in FIG. dotted lines 10, 10a. In this case, the curve depicted by the dotted line 10, which characterizes the deformation of the female element 3 from the plane of its abutment 5 to the end, has the same appearance as in Figure 1, and the change in deformation from the plane, the sea plane 5 along the generatrix of the female element 3 in the direction, opposite to its end, characterized by a curve 10a, has the form of a convexity, which is caused by the fact that the limiting abutment 6 of the male element 1 interacts with the limiting aluminum 5 of the female element 3 and moves the latter in the direction F. The arrow on the plot convexity female element 3 curve surface 10a is experiencing both longitudinal and transverse stretching.
    The theoretical change in the deformations on the generatrix of the covered element 1 is characterized by curve 11 (FIG. 5), where on the abscissa axis is the deposits 40661
    Angle of rotation between the female and female elements 1,3, and the ordinate axis is the value of the longitudinal deformations of the external surface of the female element 3 during tightening. Curve 11 has a downward branch in section I, corresponding to a transition, during which JQ covering element 3 is screwed onto male element 1 before the start of contact of their restriction stops 5 and 6, respectively. In this case, the outer surface of the female element 3 experiences a longitudinal
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    compression, and the second branch in section II corresponds to the period that follows when the interaction of the restrictive stops 5 and 6 covering 3 and covered 1 elements, respectively, and reflects the tension of the outer surface of the covering element 3 along its generatrix.
    The theoretical change in deformations on the generatrix of the male joint element 1, having a cylindrical thread and restrictive stops, is characterized by curve 12, from which it can be seen that when the pipes are screwed in before their restrictive stops (section I) touch, the outer surface of the female element 3 does not experience deformation due to the absence of tensile forces in the thread and in the next section of the II curve, which characterizes the screwing up during the interaction of the limiting stops, the changed tension of the surface tension The spines of the female element 3 are the same as for the case of tightening the conical threaded connections in section II of the curve 11.
    With simultaneous measurement of the deformations of the outer surface of the female element of the real connection and the tightening torque, the change in the degree of deformation is presented in Fig. 7.
    The abscissa X represents the relative rotation of the enclosing and enclosing elements, expressed in degrees, and on the ordinate axis, on the one hand, the applied tightening torque, and on the other hand, the magnitude of the longitudinal deformations L in the direction of the forming elements on the outer surface of the enclosing element . This cree
    the shaft corresponds to screwing a standard 3.5 inch pipe connection, 9.20 pounds per pound, made of 80 VC13 steel. The sensor 7 direction is located 7 mm from the plane of the limit stop on the other side of the thread.
    The tightening torque, characterized by curve 13, increases slightly, and then more (up to approximately 100 tons / kg), when the sealing surfaces, and then the limiting stops come in contact (rotation angle 270 °), reaching a value of 425,
    During a period of slow and slight increase, the tightening moment of the outer surface of the covering cell element 1 is compressed which corresponds to section I of curve 11 in Fig. 5, then a sharp stretch that increases simultaneously with the tightening moment which corresponds to section II of curve 11 in fig. five
    In curve 14, the variations in compression deformations are explained by the tolerances for thread machining. Compression deformation reaches a minimum value at the moment when the sealing surfaces and then restrictive stops 5 and 6 reach to the contact (about 260 °), and then the maximum deformation of the extension reaches a value of + 780 °.
    It can be seen from the graph that if the connection is tightened with the p-value of +7800, the correct tightening torque is applied from the moment the restriction stops 5 6 come into contact.
    You can, for example, use the moment when the algebraic sum of electrical signals, which are, on the one hand, the tightening moments and, on the other hand, the longitudinal deformation of the female element 3, exceeds a slightly predetermined value, which corresponds to the convergence of restrictive stops 5 and 6, to apply this additional tightening torque or a given rotation.
    Thus, making sure that the minimum value of compression is less than
     .
    154066G8
    given (for example, -200 °), one can be sure that the wrapping force at the thread level was not excessive.
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    权利要求:
    Claims (2)
    [1]
    1. Method of screwing threaded connections for steel pipes intended for the oil industry and including the male element
    with external thread and female element with female thread, having at least one limiting stop inside the female element for engagement with the male element of the male element, consisting in screwing the pipes with the means for tightening the threaded element of the joint to the required value of the parameter being monitored and ending the end The difference is that, in order to increase the efficiency of the tightening due to the identity of the characteristics, as a controlled parameter, the of the enclosing element along the generatrix at the level of the sensor installed and fixed before tightening on the outer surface of the enclosing element at a distance of 5-20 mm from the plane of the restrictive stop in the direction opposite to the threaded end, or longitudinal compression deformation of the enclosing element along the generatrix at the same sensor, or the algebraic sum of electrical signals, which are, on the one hand, the applied moment, and on the other, the longitudinal deformation of the female element by guide at the same level sensor.
    [2]
    2. Method pop. 1, which differs from the fact that after reaching the required tightening torque, characterized by the algebraic sum of electrical signals corresponding to the applied torque and longitudinal deformation of the surrounding element, respectively, a predetermined torque is applied to the tubes or set angle of rotation.
    f gz
    .
    . 2
    FIG. four
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    . "Fm
    Compiled by Yu.Sergeev Editor M.Tsitkina Tehred M.DidykKorrektor M, Kucher va
    Order 234 Circulation 471 Subscription
    VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5
    类似技术:
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    同族专利:
    公开号 | 公开日
    ES548345A0|1987-04-16|
    KR860003443A|1986-05-26|
    WO1986002123A1|1986-04-10|
    BR8504992A|1986-07-29|
    AU580097B2|1988-12-22|
    AU4838585A|1986-05-08|
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    DE3570481D1|1989-06-29|
    ZA857754B|1986-06-25|
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    CN85108215A|1986-04-10|
    EP0178988B1|1989-05-24|
    MX163012B|1991-08-05|
    US4791816A|1988-12-20|
    NO165310C|1991-01-23|
    DE178988T1|1987-02-05|
    US4700576A|1987-10-20|
    NO853990L|1986-04-09|
    CN1003951B|1989-04-19|
    KR930003295B1|1993-04-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2646280C2|2016-12-02|2018-03-02|Открытое акционерное общество "Завод бурового оборудования"|Detachable adapter|US2094491A|1934-07-20|1937-09-28|Janata Rudolph|Screw thread joint|
    US2568940A|1946-08-13|1951-09-25|Texas Co|Strain measurement|
    US2637907A|1946-11-30|1953-05-12|Youngstown Sheet And Tube Co|Extensometer for cylindrical members|
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    US3791205A|1972-02-04|1974-02-12|D Hooker|Potted strain gauge|
    JPS5717444B2|1975-02-22|1982-04-10|
    DE3011739C2|1980-03-26|1989-11-30|Sartorius Gmbh, 3400 Goettingen, De|
    US4573359A|1980-07-02|1986-03-04|Carstensen Kenneth J|System and method for assuring integrity of tubular sections|
    US4473359A|1981-09-22|1984-09-25|Davis Robert R|Flexible coupling device|US4957002A|1989-02-27|1990-09-18|Bilco Tools, Inc.|Method, system and device for determining quality of assembly of tool parts|
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    US5402688A|1993-03-17|1995-04-04|Sumitomo Metal Industries, Ltd.|Method and apparatus for determining the tightened condition of a pipe joint|
    US5955679A|1997-01-31|1999-09-21|Liberty Technologies, Inc.|Device for measuring strain parameters of a generally cylindrical member of virtually any size|
    AU715952B1|1998-07-30|2000-02-10|Hydril Company|Tubular joint wear indicator|
    US6009611A|1998-09-24|2000-01-04|Oil & Gas Rental Services, Inc.|Method for detecting wear at connections between pin and box joints|
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    US7001065B2|2003-05-05|2006-02-21|Ray Dishaw|Oilfield thread makeup and breakout verification system and method|
    FR2860546B1|2003-10-01|2006-01-27|Vallourec Mannesmann Oil & Gas|TUBULAR COMPONENT WITH MUTUALLY ORIENTED THREADED ELEMENTS AND METHOD OF MAKING SAME|
    CN102162340A|2011-02-14|2011-08-24|江苏常宝钢管股份有限公司|Using method for connection structure of high-airtight seal buttress thread casing pipe|
    FR2999708B1|2012-12-18|2014-12-05|Vallourec Mannesmann Oil & Gas|METHOD FOR MONITORING A STRETCH CONDITION OF A TUBULAR THREADED SEAL|
    JP2018059779A|2016-10-04|2018-04-12|東京瓦斯株式会社|Tightening torque measurement device and tightening torque measurement method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8415403A|FR2571466B1|1984-10-08|1984-10-08|METHOD AND DEVICE FOR PERFORMING THE SCREWING OF A THREADED JOINT FOR A TUBE|
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