WO2020113745A1 - Wellhead polished rod sealing device for pumping unit - Google Patents
Wellhead polished rod sealing device for pumping unit Download PDFInfo
- Publication number
- WO2020113745A1 WO2020113745A1 PCT/CN2019/000228 CN2019000228W WO2020113745A1 WO 2020113745 A1 WO2020113745 A1 WO 2020113745A1 CN 2019000228 W CN2019000228 W CN 2019000228W WO 2020113745 A1 WO2020113745 A1 WO 2020113745A1
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- WIPO (PCT)
- Prior art keywords
- stuffing box
- polished rod
- packing
- sealing device
- wellhead
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Definitions
- the invention relates to a light rod sealing device for a wellhead of an oil pumping unit.
- the wellhead smooth rod sealer of the pumping unit has the following problems:
- the wellhead is not tightly sealed: after oil well operation and level adjustment, it may cause misalignment of the wellhead and produce uneven wear;
- the polished rod is aging and not tightly sealed: due to the different liquid contacted by the polished rod during each up and down stroke, in the long-term operation, the thickness of the polished rod is inconsistent due to different degrees of corrosion and wear.
- the existing sealer Can't seal at the thin position of polished rod, need to replace with new polished rod;
- the third is to release the pressure when replacing the packing.
- An object of the present invention is to provide a lighthead rod sealing device for an oil pumping unit to solve the above-mentioned technical problems in the prior art.
- the upper stuffing box and the lower stuffing box are put on the polished rod, and the inner side of the lower end of the upper stuffing box and the outer side of the upper end of the lower stuffing box are connected by threads;
- the upper packing and the lower packing are respectively filled in the upper stuffing box and the space between the lower stuffing box and the polished rod, and the top of the lower stuffing box is retracted to separate the upper packing from the lower packing;
- the upper part of the connecting head is inserted into the space between the lower stuffing box and the polished rod, and is in contact with the lower end of the lower packing;
- the inner side of the upper end of the fixing cap forms a screw connection with the outer side of the lower end of the lower stuffing box, and the lower end is fixedly connected to the lower part of the connecting head.
- the wellhead polished rod sealing device of the pumping unit further comprises an auxiliary ring which is sleeved and fixed on the outside of the lower stuffing box.
- the wellhead light rod sealing device of the pumping unit further includes a pressure cap and a spring, the lower end opening of the pressure cap and the upper end of the upper stuffing box are connected by threads, and the spring is compressed on the upper end of the gland and the Between the top inner wall of the pressure cap.
- the light rod sealing device of the wellhead of the pumping unit wherein: a fixing pin is inserted on the side wall of the pressure cap, and the fixing pin interferes with the gland to limit the lowest stroke position of the gland .
- the upper end of the fixing cap is retracted to interfere with the lower end extension of the lower stuffing box, which can limit the highest position of the lower stuffing box.
- a sealing ring is provided between the upper side of the connecting head and the lower stuffing box.
- the thread at the lower end of the lower stuffing box has a spiral direction opposite to the thread at the upper end.
- the upper packing can be compressed by tightening the connection thread of the upper stuffing box and the lower stuffing box to increase the tightness; at this time, due to the upper The packing will rotate together with the upper stuffing box, so that the position of the upper packing on the polished rod is also shifted, which solves the problem that the polished rod wears the same position on the upper packing for a long time;
- the depth of the thread rotation between the pressure cap and the upper stuffing box can be adjusted to make the upper packing under the combined action of the pressure energy of the spring and the storage pressure energy of the inner wall groove of the upper stuffing box , To increase the expansion and contraction force of the upper packing and increase the sealing effect of the polished rod;
- FIG. 1 is a cross-sectional structural diagram of a wellhead polished rod sealing device provided by the present invention.
- connection head 1 fixing cap 2; lower stuffing box 3; fixing bolt 4; lower packing 5; upper stuffing box 6; upper packing 7; gland 8; spring 9; pressure cap 10; auxiliary ring 11; sealing ring 12; polished rod 13; fixing pin 15.
- the present invention provides a wellhead polished rod sealing device, including:
- the upper stuffing box 6 and the lower stuffing box 3 are sleeved on the polished rod 13, and the inner side of the lower end of the upper stuffing box 6 and the outer side of the upper end of the lower stuffing box 3 are connected by threads;
- the upper packing 7 and the lower packing 5 are respectively filled in the space between the upper stuffing box 6 and the lower stuffing box 3 and the polished rod 13, the top end of the lower stuffing box 3 is retracted to pull the upper packing 7 and the lower packing Root 5 is separated;
- a pressure cap 10, a spring 9 and a pressure cap 8 the lower end opening of the pressure cap 10 and the upper end of the upper stuffing box 6 are connected by a thread, the spring 9 and the pressure cap 8 are both disposed in the pressure cap 10,
- the lower end of the gland 8 abuts the top of the upper packing 7, the spring 9 is compressed between the upper end of the gland 8 and the top inner wall of the gland 10; on the side of the gland 10
- a fixing pin 15 is inserted on the wall, and the fixing pin 15 interferes with the gland 8 to limit the lowest stroke position of the gland 8;
- the upper part of the connector 1 is inserted into the space between the lower stuffing box 3 and the polished rod 13 and is in contact with the lower end of the lower packing 5.
- a sealing ring 12 is provided between the stuffing boxes 3;
- the fixing cap 2 has a threaded connection between the inner side of the upper end and the outer side of the lower end of the lower stuffing box 3, and the thread at the lower end of the lower stuffing box 3 (left-handed thread) and the thread at the upper end (right-handed thread)
- the direction of the spiral is opposite; the lower end of the fixing cap 2 is fixedly connected to the lower part of the connector 1; the upper end of the fixing cap 2 is retracted to form an interference with the extension of the lower end of the lower stuffing box 3, which can restrict the lower packing The highest position of box 3;
- the auxiliary ring 11 is sleeved on the outer side of the lower stuffing box 3, and is fixed to the lower stuffing box 3 by a fixing bolt 4, and is used for auxiliary force application because the lower stuffing box 3 rotates.
- the lower stuffing box 3 can be driven to rotate, so that the connector 1 moves upward with the fixing cap 2, and the lower packing 5 is compressed to an appropriate degree; then, Adjust the height of the upper stuffing box 6, and then adjust the amount of compression of the spring 9 by adjusting the thread between the pressure cap 10 and the upper stuffing box 6, so that the upper packing 7 is compressed to an appropriate degree.
- the depth of the screw rotation between the pressure cap 10 and the upper stuffing box 6 can be adjusted to make the pressure energy of the upper packing 7 in the spring 9 and the storage pressure of the inner wall groove of the upper stuffing box 6 Under the joint action, it can increase the expansion force of the upper packing 7 and increase the sealing effect of the polished rod 13;
- the upper packing 7 When the sucker rod long rod reciprocates up and down to produce the loss of the upper packing 7, the upper packing 7 can be compressed by tightening the connection threads of the upper packing box 6 and the lower packing box 3, thereby increasing the sealing; at this time, Since the upper packing 7 and the upper stuffing box 6 will rotate together, the position where the polished rod 13 wears the upper packing 7 is also shifted, which solves the problem of uneven wear caused by the polished rod 13 wearing the same position of the upper packing 7 for a long time;
- the present invention provides a sealing device for the wellhead polished rod 13 of the pumping unit, and at the same time solves the problems that the polished rod 13 of the pumping unit is unevenly worn, the service life of the polished rod 13 is short, and it needs to be vented when the packing 7 is replaced.
Abstract
A wellhead polished rod sealing device for a pumping unit, comprising an upper stuffing box (6) and a lower stuffing box (3) which are sleeved on a polished rod (13) and are screwed to each other. A space between the upper stuffing box (6) and the polished rod (13) and a space between the lower stuffing box (3) and the polished rod (13) are filled with an upper packing (7) and a lower packing (5) respectively. A pressing cover (8) elastically presses against a top part of the upper packing (7). An upper part of a connecting joint (1) is sleeved in the space between the lower stuffing box (3) and the polished rod (13), and forms an abutment with a lower end of the lower packing (5). An inner side of an upper end of a fixing cap (2) forms a screw connection with an outer side of a lower end of the lower stuffing box (3), and a lower end is fixedly connected to a lower part of the connecting joint (1). The present sealing device may simultaneously solve the problems in which the wellhead polished rod (13) of the pumping unit is abraded, the polished rod (13) has a short service life, and the upper packing (7) needing to be vented when replaced.
Description
本发明涉及一种抽油机井口光杆密封装置。The invention relates to a light rod sealing device for a wellhead of an oil pumping unit.
目前的抽油机井口光杆密封器存在以下几种问题：At present, the wellhead smooth rod sealer of the pumping unit has the following problems:
一是井口偏磨密封不严：当油井作业、调整水平等施工后，都可能导致井口不对中，产生偏磨；First, the wellhead is not tightly sealed: after oil well operation and level adjustment, it may cause misalignment of the wellhead and produce uneven wear;
二是光杆老化密封不严：由于光杆在上下冲程中每一段所接触的液体不同，在长期运行中，由于腐蚀、磨损程度不同造成光杆粗细不一致，当光杆直径相差过大时，现有密封器在光杆细的位置密封不住，需更换新光杆；Second, the polished rod is aging and not tightly sealed: due to the different liquid contacted by the polished rod during each up and down stroke, in the long-term operation, the thickness of the polished rod is inconsistent due to different degrees of corrosion and wear. When the diameter of the polished rod is too large, the existing sealer Can't seal at the thin position of polished rod, need to replace with new polished rod;
三是更换盘根时需要放压。The third is to release the pressure when replacing the packing.
发明内容Summary of the invention
本发明的目的在于：提供一种抽油机井口光杆密封装置，解决现有技术中存在的上述技术问题。An object of the present invention is to provide a lighthead rod sealing device for an oil pumping unit to solve the above-mentioned technical problems in the prior art.
为实现上述目的，本发明采用的技术方案是：To achieve the above objectives, the technical solutions adopted by the present invention are:
一种抽油机井口光杆密封装置，其特征在于，包括：A light rod sealing device for wellhead of pumping unit is characterized by comprising:
上填料箱与下填料箱，穿套在光杆上，上填料箱的下端内侧与下填料箱的上端外侧通过螺纹连接；The upper stuffing box and the lower stuffing box are put on the polished rod, and the inner side of the lower end of the upper stuffing box and the outer side of the upper end of the lower stuffing box are connected by threads;
上盘根与下盘根，分别填充在上填料箱以及下填料箱与光杆之间的空间内，所述下填料箱的顶端内缩而将上盘根与下盘根分隔开；The upper packing and the lower packing are respectively filled in the upper stuffing box and the space between the lower stuffing box and the polished rod, and the top of the lower stuffing box is retracted to separate the upper packing from the lower packing;
压盖，弹性抵压在所述上盘根的顶部；Gland, elastically pressed against the top of the upper packing;
连接头，其上部穿套在所述下填料箱与所述光杆之间空间内，并与所述下盘根的下端形成抵接；The upper part of the connecting head is inserted into the space between the lower stuffing box and the polished rod, and is in contact with the lower end of the lower packing;
固定帽，其上端内侧与所述下填料箱的下端外侧形成螺纹连接，下端与所述连接头的下部固定连接。The inner side of the upper end of the fixing cap forms a screw connection with the outer side of the lower end of the lower stuffing box, and the lower end is fixedly connected to the lower part of the connecting head.
所述的抽油机井口光杆密封装置，其中：还包括辅助圈，其穿套并且固定在所述下填料箱的外侧。The wellhead polished rod sealing device of the pumping unit further comprises an auxiliary ring which is sleeved and fixed on the outside of the lower stuffing box.
所述的抽油机井口光杆密封装置，其中：还包括压帽与弹簧，所述压帽的下端开口与上填料箱的上端通过螺纹连接，所述弹簧压缩在所述压盖上端与所 述压帽的顶部内壁之间。The wellhead light rod sealing device of the pumping unit further includes a pressure cap and a spring, the lower end opening of the pressure cap and the upper end of the upper stuffing box are connected by threads, and the spring is compressed on the upper end of the gland and the Between the top inner wall of the pressure cap.
所述的抽油机井口光杆密封装置，其中：在所述压帽的侧壁上插设有固定销，所述固定销与所述压盖发生干涉，能够限定所述压盖的最低行程位置。The light rod sealing device of the wellhead of the pumping unit, wherein: a fixing pin is inserted on the side wall of the pressure cap, and the fixing pin interferes with the gland to limit the lowest stroke position of the gland .
所述的抽油机井口光杆密封装置，其中：所述固定帽的上端内缩而与所述下填料箱的下端外延部分形成干涉，能够限制下填料箱的最高位置。In the wellhead light rod sealing device of the pumping unit, the upper end of the fixing cap is retracted to interfere with the lower end extension of the lower stuffing box, which can limit the highest position of the lower stuffing box.
所述的抽油机井口光杆密封装置，其中：在所述连接头的上部侧面与所述下填料箱之间设有密封圈。In the light rod sealing device of the wellhead of the pumping unit, a sealing ring is provided between the upper side of the connecting head and the lower stuffing box.
所述的抽油机井口光杆密封装置，其中：所述下填料箱的下端处的螺纹与上端处的螺纹的螺旋方向相反。In the wellhead smooth rod sealing device of the pumping unit, the thread at the lower end of the lower stuffing box has a spiral direction opposite to the thread at the upper end.
与现有技术相比较，采用上述技术方案的本发明具有的优点在于：Compared with the prior art, the present invention using the above technical solution has the advantages that:
1.当抽油杆长杆上下往复运动工作产生上盘根损耗时，可通过旋紧上填料箱与下填料箱的连接螺纹而压紧上盘根，而增加密封性；此时，由于上盘根会与上填料箱会一起转动，使光杆偏磨上盘根的位置也转移了，解决了长时间光杆磨损上盘根同一位置而产生偏磨的问题；1. When the sucker rod long rod reciprocates up and down to produce upper packing loss, the upper packing can be compressed by tightening the connection thread of the upper stuffing box and the lower stuffing box to increase the tightness; at this time, due to the upper The packing will rotate together with the upper stuffing box, so that the position of the upper packing on the polished rod is also shifted, which solves the problem that the polished rod wears the same position on the upper packing for a long time;
2.当光杆出现老化而粗细不一时，可通过对压帽与上填料箱之间螺纹旋转深度的调节，使上盘根在弹簧的压能和上填料箱内壁槽的储存压能联合作用下，起到上盘根缩胀力增大，增加了光杆密封性的效果；2. When the polished rod is aged and the thickness is different, the depth of the thread rotation between the pressure cap and the upper stuffing box can be adjusted to make the upper packing under the combined action of the pressure energy of the spring and the storage pressure energy of the inner wall groove of the upper stuffing box , To increase the expansion and contraction force of the upper packing and increase the sealing effect of the polished rod;
3.当需要更换上盘根时，通过旋转辅助圈，带动下填料箱旋转，使固定帽带动连接头下移而压紧下盘根，这时下盘根密封光杆，起到更换上盘根时不需要放空的效果。3. When the upper packing needs to be replaced, rotate the auxiliary ring to drive the lower stuffing box to rotate, so that the fixed cap drives the connector to move down and compress the lower packing. At this time, the lower packing seals the polished rod and is used to replace the upper packing. No need to vent the effect.
图1是本发明提供的抽油机井口光杆密封装置的剖视结构图。FIG. 1 is a cross-sectional structural diagram of a wellhead polished rod sealing device provided by the present invention.
附图标记说明：连接头1；固定帽2；下填料箱3；固定螺栓4；下盘根5；上填料箱6；上盘根7；压盖8；弹簧9；压帽10；辅助圈11；密封圈12；光杆13；固定销15。DESCRIPTION OF REFERENCE NUMERALS: connection head 1; fixing cap 2; lower stuffing box 3; fixing bolt 4; lower packing 5; upper stuffing box 6; upper packing 7; gland 8; spring 9; pressure cap 10; auxiliary ring 11; sealing ring 12; polished rod 13; fixing pin 15.
以下将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按真实比例绘制的。Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but non-limiting manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to true scale.
如图1所示，本发明提供的一种抽油机井口光杆密封装置，包括：As shown in FIG. 1, the present invention provides a wellhead polished rod sealing device, including:
上填料箱6与下填料箱3，穿套在光杆13上，上填料箱6的下端内侧与下填料箱3的上端外侧通过螺纹连接；The upper stuffing box 6 and the lower stuffing box 3 are sleeved on the polished rod 13, and the inner side of the lower end of the upper stuffing box 6 and the outer side of the upper end of the lower stuffing box 3 are connected by threads;
上盘根7与下盘根5，分别填充在上填料箱6以及下填料箱3与光杆13之间的空间内，所述下填料箱3的顶端内缩而将上盘根7与下盘根5分隔开；The upper packing 7 and the lower packing 5 are respectively filled in the space between the upper stuffing box 6 and the lower stuffing box 3 and the polished rod 13, the top end of the lower stuffing box 3 is retracted to pull the upper packing 7 and the lower packing Root 5 is separated;
压帽10、弹簧9与压盖8，所述压帽10的下端开口与上填料箱6的上端通过螺纹连接，所述弹簧9与所述压盖8均设置于所述压帽10内，所述压盖8下端与所述上盘根7的顶部抵接，所述弹簧9压缩在所述压盖8上端与所述压帽10的顶部内壁之间；在所述压帽10的侧壁上插设有固定销15，所述固定销15与所述压盖8发生干涉，能够限定所述压盖8的最低行程位置；A pressure cap 10, a spring 9 and a pressure cap 8, the lower end opening of the pressure cap 10 and the upper end of the upper stuffing box 6 are connected by a thread, the spring 9 and the pressure cap 8 are both disposed in the pressure cap 10, The lower end of the gland 8 abuts the top of the upper packing 7, the spring 9 is compressed between the upper end of the gland 8 and the top inner wall of the gland 10; on the side of the gland 10 A fixing pin 15 is inserted on the wall, and the fixing pin 15 interferes with the gland 8 to limit the lowest stroke position of the gland 8;
连接头1，其上部穿套在所述下填料箱3与所述光杆13之间空间内，并与所述下盘根5的下端形成抵接，在所述连接头1的上部侧面与所述下填料箱3之间设有密封圈12；The upper part of the connector 1 is inserted into the space between the lower stuffing box 3 and the polished rod 13 and is in contact with the lower end of the lower packing 5. A sealing ring 12 is provided between the stuffing boxes 3;
固定帽2，其上端内侧与所述下填料箱3的下端外侧形成螺纹连接，且所述下填料箱3的下端处的螺纹(为左旋螺纹)与上端处的螺纹(为右旋螺纹)的螺旋方向相反；所述固定帽2的下端与所述连接头1的下部固定连接；所述固定帽2的上端内缩而与所述下填料箱3的下端外延部分形成干涉，能够限制下填料箱3的最高位置；The fixing cap 2 has a threaded connection between the inner side of the upper end and the outer side of the lower end of the lower stuffing box 3, and the thread at the lower end of the lower stuffing box 3 (left-handed thread) and the thread at the upper end (right-handed thread) The direction of the spiral is opposite; the lower end of the fixing cap 2 is fixedly connected to the lower part of the connector 1; the upper end of the fixing cap 2 is retracted to form an interference with the extension of the lower end of the lower stuffing box 3, which can restrict the lower packing The highest position of box 3;
辅助圈11，穿套在所述下填料箱3的外侧，并通过固定螺栓4与所述下填料箱3形成固定，用于辅助施力是所述下填料箱3发生旋转。The auxiliary ring 11 is sleeved on the outer side of the lower stuffing box 3, and is fixed to the lower stuffing box 3 by a fixing bolt 4, and is used for auxiliary force application because the lower stuffing box 3 rotates.
本发明使用的时候，通过旋转所述辅助圈11，能够带动所述下填料箱3发生旋转，使连接头1随同固定帽2向上移动，将下盘根5压紧至合适的程度；然后，调整上填料箱6的高度，再通过调节压帽10与上填料箱6之间螺纹，调节弹簧9的压缩量，而使上盘根7压紧至合适的程度。When the invention is used, by rotating the auxiliary ring 11, the lower stuffing box 3 can be driven to rotate, so that the connector 1 moves upward with the fixing cap 2, and the lower packing 5 is compressed to an appropriate degree; then, Adjust the height of the upper stuffing box 6, and then adjust the amount of compression of the spring 9 by adjusting the thread between the pressure cap 10 and the upper stuffing box 6, so that the upper packing 7 is compressed to an appropriate degree.
当光杆13出现老化而粗细不一时，可通过对压帽10与上填料箱6之间螺纹旋转深度的调节，使上盘根7在弹簧9的压能和上填料箱6内壁槽的储存压能联合作用下，起到上盘根7缩胀力增大，增加了光杆13密封性的效果；When the polished rod 13 is aged and the thickness is different, the depth of the screw rotation between the pressure cap 10 and the upper stuffing box 6 can be adjusted to make the pressure energy of the upper packing 7 in the spring 9 and the storage pressure of the inner wall groove of the upper stuffing box 6 Under the joint action, it can increase the expansion force of the upper packing 7 and increase the sealing effect of the polished rod 13;
当抽油杆长杆上下往复运动工作产生上盘根7损耗时，可通过旋紧上填料箱6与下填料箱3的连接螺纹而压紧上盘根7，而增加密封性；此时，由于上盘根7会与上填料箱6会一起转动，使光杆13偏磨上盘根7的位置也转移了，解决了长时间光杆13磨损上盘根7同一位置而产生偏磨的问题；When the sucker rod long rod reciprocates up and down to produce the loss of the upper packing 7, the upper packing 7 can be compressed by tightening the connection threads of the upper packing box 6 and the lower packing box 3, thereby increasing the sealing; at this time, Since the upper packing 7 and the upper stuffing box 6 will rotate together, the position where the polished rod 13 wears the upper packing 7 is also shifted, which solves the problem of uneven wear caused by the polished rod 13 wearing the same position of the upper packing 7 for a long time;
当需要更换上盘根7时，通过旋转辅助圈11，带动下填料箱3旋转，使固定帽2带动连接头1下移而压紧下盘根5，这时下盘根5密封光杆13，起到更换上盘根7时不需要放空的效果。When the upper packing 7 needs to be replaced, the auxiliary packing 11 is rotated to drive the lower stuffing box 3 to rotate, so that the fixed cap 2 drives the connector 1 to move down to press the lower packing 5, and the lower packing 5 seals the polished rod 13 There is no need to empty the effect when replacing the upper packing 7.
由此可见，本发明提供了一种抽油机井口光杆13密封装置，同时解决了抽油机井口光杆13偏磨，光杆13使用寿命短，换上盘根7时要放空等问题。It can be seen that the present invention provides a sealing device for the wellhead polished rod 13 of the pumping unit, and at the same time solves the problems that the polished rod 13 of the pumping unit is unevenly worn, the service life of the polished rod 13 is short, and it needs to be vented when the packing 7 is replaced.
以上说明对本发明而言只是说明性的，而非限制性的，本领域普通技术人员理解，在不脱离权利要求所限定的精神和范围的情况下，可作出许多修改、变化或等效，但都将落入本发明的保护范围之内。The above description is only illustrative rather than restrictive for the present invention. Those of ordinary skill in the art understand that many modifications, changes, or equivalents can be made without departing from the spirit and scope defined by the claims, but All will fall within the protection scope of the present invention.
Claims (7)
- 一种抽油机井口光杆密封装置，其特征在于，包括：A light rod sealing device for wellhead of pumping unit is characterized by comprising:上填料箱与下填料箱，穿套在光杆上，上填料箱的下端内侧与下填料箱的上端外侧通过螺纹连接；The upper stuffing box and the lower stuffing box are put on the polished rod, and the inner side of the lower end of the upper stuffing box and the outer side of the upper end of the lower stuffing box are connected by threads;上盘根与下盘根，分别填充在上填料箱以及下填料箱与光杆之间的空间内，所述下填料箱的顶端内缩而将上盘根与下盘根分隔开；The upper packing and the lower packing are respectively filled in the upper stuffing box and the space between the lower stuffing box and the polished rod, and the top of the lower stuffing box is retracted to separate the upper packing from the lower packing;压盖，弹性抵压在所述上盘根的顶部；Gland, elastically pressed against the top of the upper packing;连接头，其上部穿套在所述下填料箱与所述光杆之间空间内，并与所述下盘根的下端形成抵接；The upper part of the connecting head is inserted into the space between the lower stuffing box and the polished rod, and is in contact with the lower end of the lower packing;固定帽，其上端内侧与所述下填料箱的下端外侧形成螺纹连接，下端与所述连接头的下部固定连接。The inner side of the upper end of the fixing cap forms a screw connection with the outer side of the lower end of the lower stuffing box, and the lower end is fixedly connected to the lower part of the connecting head.
- 根据权利要求1所述的抽油机井口光杆密封装置，其特征在于：还包括辅助圈，其穿套并且固定在所述下填料箱的外侧。The pumphead wellhead polished rod sealing device according to claim 1, further comprising an auxiliary ring which is sleeved and fixed on the outer side of the lower stuffing box.
- 根据权利要求1所述的抽油机井口光杆密封装置，其特征在于：还包括压帽与弹簧，所述压帽的下端开口与上填料箱的上端通过螺纹连接，所述弹簧压缩在所述压盖上端与所述压帽的顶部内壁之间。The pumphead wellhead polished rod sealing device according to claim 1, further comprising a pressure cap and a spring, the lower end opening of the pressure cap and the upper end of the upper stuffing box are connected by threads, and the spring is compressed at the Between the upper end of the gland and the top inner wall of the gland.
- 根据权利要求3所述的抽油机井口光杆密封装置，其特征在于：在所述压帽的侧壁上插设有固定销，所述固定销与所述压盖发生干涉，能够限定所述压盖的最低行程位置。The wellhead polished rod sealing device of claim 3, wherein a fixing pin is inserted on the side wall of the pressure cap, and the fixing pin interferes with the gland to limit the The lowest stroke position of the gland.
- 根据权利要求1所述的抽油机井口光杆密封装置，其特征在于：所述固定帽的上端内缩而与所述下填料箱的下端外延部分形成干涉，能够限制下填料箱的最高位置。The pumphead wellhead polished rod sealing device according to claim 1, wherein the upper end of the fixing cap retracts to interfere with the lower end extension of the lower stuffing box, which can limit the highest position of the lower stuffing box.
- 根据权利要求1所述的抽油机井口光杆密封装置，其特征在于：在所述连接头的上部侧面与所述下填料箱之间设有密封圈。The pumphead wellhead polished rod sealing device according to claim 1, wherein a sealing ring is provided between the upper side of the connector and the lower stuffing box.
- 根据权利要求1所述的抽油机井口光杆密封装置，其特征在于：所述下填料箱的下端处的螺纹与上端处的螺纹的螺旋方向相反。The wellhead polished rod sealing device of claim 1, wherein the thread at the lower end of the lower stuffing box is opposite to the spiral direction of the thread at the upper end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496089.X | 2018-12-07 | ||
| CN201811496089.XA CN111287683A (en) | 2018-12-07 | 2018-12-07 | Wellhead polish rod sealing device of oil pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020113745A1 true WO2020113745A1 (en) | 2020-06-11 |
Family
ID=70973561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/000228 WO2020113745A1 (en) | 2018-12-07 | 2019-11-27 | Wellhead polished rod sealing device for pumping unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111287683A (en) |
| WO (1) | WO2020113745A1 (en) |
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| CN113802999A (en) * | 2021-11-16 | 2021-12-17 | 智慧猫(东营)智能科技有限公司 | Rolling and releasing synchronous type oil pumping machine hair braid lifting and replacing equipment |
| US20220098953A1 (en) * | 2020-09-29 | 2022-03-31 | Branden Wiggins | The Spring-Loaded Self-Adjusting Stuffing Box |
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|---|---|
| CN111287683A (en) | 2020-06-16 |
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