• 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:
    1. A NUTTING CONNECTION FOR THE ELECTRODE OF THE OVEN, containing a threaded nipple, screwed electrodes with sockets threaded for screwing half of the nipple and a joining plane, characterized in that, in order to increase the strength of the connection of the connected electrodes there is a gap of the minimum value at a level located between 0.1-0.25 of the height of the screwed-on threaded sections, when measured in each slot from its base. N
    公开号:SU1017177A3
    申请号:SU803001605
    申请日:1980-11-05
    公开日:1983-05-07
    发明作者:Будо Жан-Мишель；Лог Мишель；Паризо Клод
    申请人:Сосьете Дез Электрод Рефрактэр Савуа (Фирма)；
    IPC主号:
    专利说明:

    2. A ferrule according to Claim 1, characterized in that on both sides of the plane of connection of two connected electrodes, the thread of the nozzle comprises tilt zones: one zone with a tangent of 0.1640, 166 from the joint plane in the direction of the tip of the nozzle, and the other the zone with the tangent of the angle of inclination 0,185-0,195 extends from the end of the choke in the direction of the connecting point
    3. Fitting connection on PP. 1 and 2, characterized in that the nozzle has on both sides of the plane of the connection of two connected electrodes a zone of inclination equal to the zone of inclination of the socket enclosed between the two zones with different inclination.
    4. Fitting connection on PP. 13, differing from the fact that
    there is an abutment zone in the joint, located between 1/3 and 1/2 Century: from the screwed areas. threaded when measured from the base of each socket.
    5. A ferrule according to claim 4, characterized in that
    in the stop zone, the side of the thread of the fitting is offset by 0.080, 20 mm in the direction of the base of the socket.
    6. The fitting on PP. 1 and 4, different from on both sides of the plane of connection of the connected electrodes; the thread of each socket has two zones with different inclinations relative to the average slope of the thread of the socket: one zone PYuhodit from the plane of connection in the direction of the base of the socket, and the direction of the joint plane.
    7. Pipeline connection on PP. 14 and 6, characterized in that in the stop zone the side of the thread of the socket is smsden by the value of 0.08 gO, 20 mm in the direction of the plane
    compounds.
    8. Fitting connection on PP. 1, 4-7, in contrast to the fact that the inclination of the thread varies in height of the nozzle and socket smoothly.
    The invention relates to electrometallurgical production, in particular to the manufacture of electrodes for electric arc furnaces.
    It is known to have a connecting connection of two electrodes for the manufacture of an arc furnace furnace, comprising composite electrodes with cylindrical sockets with a thread and a nozzle having a thread cut into the cylinder forming part and screwed into the sockets of screwed electrodes (}.
    The disadvantages of such a choke joint are the weakness of tightening and the possibility of its unwinding during operation, which leads to the breakdown of the assembled electrode at the fitting that is the weakest point of the electrode.
    The closest to the proposed technical essence and the achieved result is a choke connection, including a threaded choke, screwed-on electrodes with sockets threaded for screwing in half of the choke and the joint plane.
    To avoid excessive clamping in the socket of the electrode, one or one or several pushing parts are placed between some of the threaded threads of the socket and the corresponding threaded threads of the socket. These expandable parts must be of durable material that does not deform at operating temperatures 2.
    However, the known technical solution does not allow one to avoid ruptures of choke connections caused by thermal and thermomechanical stresses. Moreover, the implementation of an increased density of threads, localized on one side of the thread, presents difficulties in terms of processing, which leads to a significant increase in the cost of manufacturing fittings.
    The purpose of the invention is to increase the reliability of the connection.
    This goal is achieved by the fact that in the choke connection for elect | The furnace furnace, which includes a threaded nipple, screwed electrodes with sockets threaded for screwing half of the nipple and connection plane, on the side of connected planes, the gap between the threads of the nipple thread and the threads of the sockets of the connected electrodes is at a minimum between 0.1 -0.25 of the height of the threaded threaded sections, measured in each socket from its base.
    On both sides of the plane of connection of two connected electrodes, the thread of the nozzle contains two zones of inclination: one zone with a tangent of inclination angle 0.164 - 0.166 extends from the insulation plane in the direction of the end of the fitting, and the other zone with tangent angle of inclination 0.185 - 0.195 passes from the end of the fitting to the direction of the joint plane. The fitting has, on both sides of the plane of the junction of two electrodes connectors, a zone of inclination equal to the zone of inclination of the socket enclosed between two sonhshi with different inclination. There is an abutment zone in the joint located between 1/3 and 1/2 of the height of the screwed thread sections as measured from the base of each socket. In the abutment zone, the long side of the fitting would be offset by a value of 0.080,20 mm in the direction of the base of the socket. On both sides of the plane of connection of the connected electrodes, the thread of each socket has two zones with different inclinations relative to the average inclination of the thread of the socket: one zone extends from the plane of connection in the direction of the base of the socket and the other from the base of the socket in the direction of the plane of connection. In the abutment zone, the long side of the thread would be, the sockets shifted by the value of 080.2 mm in the direction of the joint plane. The tilt of the thread varies in height of the nozzle and socket smoothly. Studies have shown that many breaks in choke connections result from the action of two stress systems on them: stress strain, which is transmitted by tension forces on the tube along its axis and tangential forces acting on the walls of the threaded sockets of the electrodes; Mechanical stresses, which for the most part act on the side and can bend the electrode rods. The greatest stresses are formed, on the one hand, at the level of the plane of connection of the electrodes and, on the other hand, at the level of the bases of the sockets, and the stresses acting on the walls of the sockets pass in an intermediate zone located between half and a quarter of the height of the thread of the socket, which screwed from the choke (height is measured from the base of the socket). The gap between the threaded portions of the fitting and the threaded portions of each of the two electrode sockets is changed by determining the difference between the diameter of the side surface (main diameter) of the thread of the choke and the analogous diameter of the electrode socket. The smallest gap is located between the pole and a quarter of the height (the end of the socket screwed from the socket (measured from the bottom of the socket), and the greatest at the two ends of the thread. The cross-sectional stresses acting on the electrode stem, partially absorbing the electrode, partially absorb small transverse displacements of the ends of the union at the bases of the screw sockets, and at the level of the plane of the joint, by small movements of the area of the larger diameter of the socket with respect to the upper edges of the walls of the socket of the secondary nests. The threaded points of the socket and socket receive an annular stop zone in the axial direction at the level of three threads of the socket or the corresponding part of the socket, which is located mainly between the third and half of the height of the threaded sections screwed together (measured from the end of the small diameter). allows, at the time of screwing the fitting into its socket, to stop screwing the fitting to the clip of the long sides of the thread of the union with respect to the long sides of the thread of the socket. FIG. 1 shows choke connection, cross section; in fig. 2 - part of the fitting, cross section; in fig. 3 - thread thread fittings. The fittings consist of two electrodes 1 and 2, centered by means of fitting 3, having a thread with a pitch of four threads per inch. The nozzle has two parts of the truncated cone type, facing each other with large bases along the equatorial plane 4 (Fig. 2). According to current international standards, the slope of each of these truncated cones, expressed by the tangent of their angle forming with the nozzle axis, is 1/6. The proposed fitting (Fig. 2) has a slope of two consecutive values. Along the length, the AB forming a threaded cone with the axis XY has an angle h. Behind point B, an aircraft with an axis XU has an angle of In the considered embodiment, tg (, 165;, 19Q, i.e., the angle od is slightly smaller, and the angle P is much larger than the norm. The other part of the choke, symmetrical about plane 4, is treated in the same way. These two slopes have slopes tg ci of which is 0.164 - |, 1b6g | and tg p 0.0155 - 0.195. The electrode sockets are threaded with an inclination of 1/6 along the entire length of the generatrix (Fig. 1) .. In the proposed fitting, which has 26 threads of thread both sides of the equatorial area, the length of the LV corresponds to 22 threads of the thread, and the sun - 4 threads of the thread. This shows that when If the fitting is screwed into the electrode socket, then in zone B there will be a minimum gap between the threads of the fitting and the threads of the socket. In addition, between the tenth and the two last threads of the fitting from its end form an area of abutment, allowing the exact tightening of the fitting to stop In this socket, by displacing by a fraction of a millimeter in the direction of the end of the small diameter of the fitting of the tool, KOTOiHiiM is threaded. Beyond this zone, the position of the tool is restored in accordance with the normal installation. The width of the thread grooves does not change due to the lubrication of the tool, and only the density of the thread itself changes. When the tool cuts a threaded groove from the end of the small diameter of the nozzle, the offset threaded groove 5 is slightly closer to the threaded anterior groove 6 and slightly removed from the threaded groove 7, which is formed after installing the tool in the normal position, which does not allow it to shift, i.e. . the instrument's confusion is carried out sequentially, over a certain thread length. (Fig. 3) between points 8 and 9. Restoration of the tool to the normal position occurs along the length between points 10 and 11. These Lengths depend on the speed with which the peripheral processing speed is adjusted. In this case, the groove 5 is placed at 0.12 m (close to the groove b). Since the width of the threaded grooves is constant, this offset reduces the distance between the edges 12 and 13 of the threaded grooves 5 and 6 by the same amount, which indicates an equal increase in the distance between the edges 14 and 15 of the threaded grooves 5 and 7. As a result of the displacement of the threaded groove 5, the entire surface of the thread side, sandwiched between the edge 14 and the base of the threaded groove, plays the role of an emphasis when the fitting is screwed into the threaded socket of the corresponding electrode. The long side of the thread, oriented towards the bottom of the socket, stops the screwing in of the socket before the latter presses against the base of the socket, and allows keeping the gap between the other long sides of the thread of the socket and the corresponding sides of the socket in a cold state in the pceaoNj direction. A rupture in a threaded turn, which plays the role of an abutment, or thread, against which it rests when the joint has a high temperature, does not occur. There is only a slight deformation of the surfaces at the points of contact. There are also no breaks in the nozzle and the walls of the socket of the electrodes, since the voltages that form at the level of the stop zone are less than the voltages that can cause a rupture of the choke or machine-socket in the electrode. This ensures, in particular, by careful selection of the abutment zone, which should be sufficiently distant from the joint zone and should not be too close to the point of change of inclination, since it is at point B (see Fig. 1 and 2) that the most significant transverse forces are formed. when the temperature of the choke joint increases, as a result of the small gaps at this point. It is preferable to place the abutment zone behind point B, between the third and half heights of the screwed thread (measured from the ends of small diameter}. The value of the 0.12 mm thread displacement is close to optimal, however it can be in the range of 0.08-0.20 mm. Suggested threaded connections can also be made with three threads per inch with a thread pitch. It is necessary to avoid decreasing the density of the displaced threads, so that they can hold the tension of the threaded connection. The displacement of the thread groove does not reduce the density of the displaced thread (thread k) threads, but vice versa, the density of the first thread of the thread appears. If the displacement takes place in relation to two to three threads, only the first thread has a higher density. The following threads maintain a normal density. At the fitting B, an annular zone can be formed covering several threads of thread, forming a parallel to the forming socket. In this case, the nozzle slope has three consecutive values. But in any case, zone B must be completely enclosed between the tenth part and the quarter of the height of the screwed thread section (measured from the base of the socket). The modification of the inclination and the stop zone can also be implemented on the electrode sockets, and then the nozzle retains its inclination and its thread without displacement. It may also be envisaged to distribute between the nozzle and the threads of the tilt modification and displacement of the threads in the stop zone. If the inclination modifications are related to the machining of the threaded sockets, the inclination of the zone that extends from the joint plane in the direction of the socket base should be steeper than the average inclination of the socket, and vice versa, the inclination of the zone that extends from the socket base in the direction of the joint plane must be steeper than average slope. Inclination modifications that allow varying energy values can also
    权利要求:
    Claims (8)
    [1]
    1. NUMBER CONNECTION FOR FURNACE ELECTRODE, comprising a threaded fitting, screwed-in electrodes with sockets having a thread for screwing in half of the fitting and a connection plane, characterized in that, in order to increase the reliability of the connection, from the side of the connected planes between the threads of the fitting ' and the threads of the nests of the connected electrodes have a gap of a minimum value at a level located between 0.1-0.25 of the height of the screwed threaded sections, when measuring it in each socket from its base.
    g kz s
    1017177 A
    [2]
    2. A fitting according to claim 1, characterized in that on both sides of the connection plane of the two connected electrodes, the nozzle thread contains tilt zones: one zone with an inclination tangent of 0.1640.166 extends from the connection plane towards the end of the fitting, and the other the zone with a slope of 0.185-0.195 extends from the end of the nozzle in the direction of flatness of the connection.
    [3]
    3. The fitting according to paragraphs. 1 and 2, characterized in that the fitting has on both sides of the plane of connection of the two electrodes to be connected a slope zone equal to the slope aeon eon enclosed between two aeons with different slopes.
    [4]
    4. The union connection according to paragraphs. 13, characterized in that in the connection there is an aeon stop, located between 1/3 and 1/2 of the height of the screwed sections, the thread when measuring from the base of each socket.
    [5]
    5. The fitting according to claim 4, characterized in that in the aeon of the stop the long side of the thread of the fitting is mixed by a value of 0.080.20 mm in the direction of the base of the socket.
    [6]
    6. The union connection according to paragraphs. 1 and 4, characterized in that on both sides of the connection plane of the electrodes to be connected, the thread of each socket has two aeons with different slopes with respect to the average slope of the fitting thread: one aeon extends from the connection plane in the direction of the base of the socket, and the other from the base of the socket direction of the connection plane.
    [7]
    7. The union connection according to paragraphs. 14 and 6, characterized in that, in the stop zone, the long side of the thread of the socket is offset by a value of 0.08 x 0.20 mm in the direction of the connection plane.
    [8]
    8. The union connection according to paragraphs. 1, 4-7, characterized in that the inclination of the thread changes along the height of the fitting and the socket smoothly.
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    同族专利:
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    JPS5729838B2|1982-06-24|
    FI71051C|1986-10-27|
    NO153030C|1986-01-02|
    FI71051B|1986-07-18|
    FI803453L|1981-05-10|
    BR8007202A|1981-05-12|
    YU42541B|1988-10-31|
    IN152708B|1984-03-17|
    CA1146203A|1983-05-10|
    NO803333L|1981-05-11|
    AU533808B2|1983-12-08|
    DK154599B|1988-11-28|
    EP0028993A1|1981-05-20|
    JPS5684895A|1981-07-10|
    DK154599C|1989-04-17|
    YU282480A|1983-01-21|
    ZA806861B|1981-10-28|
    AR223555A1|1981-08-31|
    FR2469854B1|1983-09-09|
    DK471180A|1981-05-10|
    NO153030B|1985-09-23|
    PT72031A|1980-12-01|
    ES254159U|1981-02-16|
    IE50744B1|1986-07-09|
    AT4268T|1983-08-15|
    FR2469854A1|1981-05-22|
    EP0028993B1|1983-07-20|
    AU6420280A|1981-05-14|
    PT72031B|1981-12-17|
    IE802322L|1981-05-09|
    ES254159Y|1981-11-01|
    DE3064322D1|1983-08-25|
    US4317951A|1982-03-02|
    MX148606A|1983-05-16|
    GR71721B|1983-06-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1062015A|1952-05-30|1954-04-16|Conradty Fa C|Means of joining carbon and graphite bodies|
    FR1194249A|1957-04-11|1959-11-06|
    US2970854A|1958-08-06|1961-02-07|Union Carbide Corp|Electrode joint|
    FR1417007A|1963-12-10|1965-11-05|Siemens Planiawerke Ag|Assembly by screwing two elements in material such as carbon|
    DE2143997C3|1971-09-02|1975-11-13|Sigri Elektrographit Gmbh|Connection of carbon and graphite electrodes|
    JPS5540998B2|1975-11-28|1980-10-21|
    DE2555688C2|1975-12-11|1984-09-06|Sigri Elektrographit Gmbh, 8901 Meitingen|Connection of carbon and graphite electrodes|
    CA1103729A|1977-06-07|1981-06-23|William H. Burwell|Friable socket thread electrode joint|
    US4161619A|1977-11-11|1979-07-17|Republic Steel Corporation|Electrode socket design|
    US4152533A|1978-04-27|1979-05-01|Great Lakes Carbon Corporation|Electrode joint|
    US4208149A|1978-10-25|1980-06-17|Airco, Inc.|Electrode connecting pin assembly|JPH0592703U|1992-05-22|1993-12-17|日本アイ．テイー．エス株式会社|Liquid sample container for fluorescent X-ray analysis|
    US9844104B1|2014-04-22|2017-12-12|Contractors & Industrial Supply Company, Inc.|Electrode joining apparatus|
    US9850105B1|2015-05-04|2017-12-26|Contractors & Industrial Supply Company, Inc.|Vertical automatic addition tong apparatus|
    CN111811381A|2020-07-01|2020-10-23|河南昇瑞炭材料科技有限公司|Method for controlling machining precision of UHP phi 650mm graphite electrode joint|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7928144A|FR2469854B1|1979-11-09|1979-11-09|
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