CN222228508U - Non-stop pumping wellhead sealing device - Google Patents
Non-stop pumping wellhead sealing device Download PDFInfo
- Publication number
- CN222228508U CN222228508U CN202421079171.3U CN202421079171U CN222228508U CN 222228508 U CN222228508 U CN 222228508U CN 202421079171 U CN202421079171 U CN 202421079171U CN 222228508 U CN222228508 U CN 222228508U
- Authority
- CN
- China
- Prior art keywords
- primary
- sealing
- sealing device
- guide cylinder
- rubber
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
本实用新型公开了不停抽井口密封装置，包括一级密封装置、二级密封装置，所述一级密封装置下端与二级密封装置上端连接；所述一级密封装置对向设置两个一级密封机构；所述一级密封机构包括一级导向缸和其内部的一级直线运动胶皮插；所述二级密封装置对向设置两个二级密封机构；所述二级密封机构中包括二级导向缸和其内部的二级直线运动胶皮插、二级密封闸门。本实用新型提供的不停抽井口密封装置，通过上下两级的交替应用，可实现不停井更换盘根作业，还能通过密封闸门进行二级维护作业，降低停井带来的风险，提高采油时率及人员的工作效率。
The utility model discloses a non-stop pumping wellhead sealing device, comprising a primary sealing device and a secondary sealing device, wherein the lower end of the primary sealing device is connected to the upper end of the secondary sealing device; the primary sealing device is provided with two primary sealing mechanisms opposite to each other; the primary sealing mechanism comprises a primary guide cylinder and a primary linear motion rubber plug inside the primary guide cylinder; the secondary sealing device is provided with two secondary sealing mechanisms opposite to each other; the secondary sealing mechanism comprises a secondary guide cylinder and a secondary linear motion rubber plug inside the secondary guide cylinder, and a secondary sealing gate. The non-stop pumping wellhead sealing device provided by the utility model can realize the operation of replacing packing without stopping the well through the alternating application of the upper and lower stages, and can also perform secondary maintenance operations through the sealing gate, thereby reducing the risk caused by well shutdown and improving the oil production time rate and the work efficiency of personnel.
Description
Technical Field
The utility model relates to the technical field of wellhead sealing devices, in particular to a continuous pumping wellhead sealing device.
Background
In the oil extraction production process, the pumping well polish rod is connected with the pumping unit rope hanger and the underground sucker rod column to drive the oil pump to reciprocate, and the pumping well wellhead and the polish rod are sealed by the packing box. The polish rod sealer is an important wellhead device for ensuring normal production of the pumping unit. The wellhead polish rod sealer usually adopted on site is generally composed of packing and other parts, and has good sealing effect, but complex structure. The novel polish rod sealer which does not need special packing and can realize continuous pumping and packing has the defects that a deviation adjusting device is unreasonable, 6 bolts of a flange need to be detached during deviation adjustment, the workload is large, when a wellhead has pressure, deviation adjusting operation cannot be carried out, and the functions and the efficiency of the wellhead sealing device directly influence crude oil production.
The current oil field is in the high water content period, mainly is mechanical oil extraction mode, because the water content is high, well head sealing device's packing is along with the upper and lower operation of well head polished rod, and the packing is born the effect of high temperature, high pressure and well head external environment's influence, causes very easily that the packing is damaged, and life is short, and is sealed not tight, causes crude oil loss well head oil leak, polluted environment, needs often to change the packing, and frequent stopping the well changes the packing and causes the oil well output decline, after changing the packing, still clears up well head equipment, staff intensity of labour is big, work efficiency is low.
The utility model discloses (bulletin) No. CN210622755U, discloses a SAGD oil well doublestage polished rod sealing device, including packing box lower clutch, upper portion flashboard, lower portion flashboard and cavity, the top of cavity is connected with packing box lower clutch through the screw thread, and upper portion flashboard sealant core is installed with upper portion to the front end of upper portion flashboard, open on the lower portion flashboard has the seal groove, and the lower part intermediate position of cavity is provided with annotates the fat hole, annotates the fat hole and communicates with each other with the inside of cavity, annotates the fat seal groove intussuseption on lower portion flashboard through annotating the fat hole, forms sealedly.
CN204532206U, which discloses an oil extraction polish rod sealer and an oil extraction device. The oil production polished rod sealer comprises a sealer box body, at least one flashboard device and a sealing device, wherein the first end of the sealer box body is used for being connected with a christmas tree, the second end of the sealer box body is used for being connected with a packing box, a polished rod accommodating cavity used for accommodating a polished rod is arranged in the sealer box body, the polished rod accommodating cavity extends from the first end to the second end of the sealer box body, and the at least one flashboard device isolates the sealer from an oil well so as to realize pressurized replacement of the polished rod or the packing box.
The publication No. CN106468150A discloses a polish rod sealing device, which comprises an oil pumping shaft, wherein an oil pumping shaft packing is arranged in the oil pumping shaft, the oil pumping polish rod is arranged in the oil pumping shaft and is sealed through the oil pumping shaft packing, a valve is arranged in the oil pumping shaft, and the valve is arranged below the oil pumping shaft packing.
The prior art can only maintain the upper-level sealing equipment without stopping the well when the equipment is maintained, and can not maintain the lower-level sealing equipment without stopping the well.
In summary, the technical scheme of the above disclosed technology, the technical problems to be solved and the beneficial effects are different from those of the present utility model, and the above disclosed technical documents have no technical teaching for more technical features of the present utility model, the technical problems to be solved and the beneficial effects.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, it is an object of the present utility model to provide a continuous pumping wellhead sealing device. The maintenance of the packing and all sealing devices without stopping the well is realized.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The continuous pumping wellhead sealing device comprises a primary sealing device and a secondary sealing device, wherein the lower end of the primary sealing device is connected with the upper end of the secondary sealing device, the primary sealing device comprises two primary sealing mechanisms which are oppositely arranged, the primary sealing mechanism comprises a primary guide cylinder and a primary linear motion rubber plug in the primary guide cylinder, the secondary sealing device comprises two secondary sealing mechanisms which are oppositely arranged, and the secondary sealing mechanism comprises a secondary guide cylinder and a secondary linear motion rubber plug in the secondary guide cylinder, and a secondary sealing gate.
Further, the secondary sealing gate comprises an annular seat and a sealing plate;
Specifically, the annular seat is provided with a concave table, the concave table faces the wellhead, and the sealing plate can be seated in the concave table;
Specifically, the upper end of the sealing plate is connected with the annular seat through the movable connecting piece, and the annular seat, the sealing plate and the movable connecting piece are all made of rubber materials;
Specifically, the secondary sealing gate is arranged in a convex ring in the secondary guide cylinder;
The secondary guide cylinder is provided with a sealing plate accommodating groove.
Further, the lower end of the primary sealing device is connected with the upper end of the secondary sealing device through a primary clamp;
Specifically, the lower end of the secondary sealing device is connected with a wellhead four-way joint through a secondary clamp.
Further, the primary sealing device comprises a primary wellhead packing box, and two primary sealing mechanisms are oppositely arranged on the side wall of the primary wellhead packing box;
Specifically, the primary linear motion rubber insert comprises a primary gland, a primary propelling screw rod and a primary rubber insert, wherein the inner port of the primary guide cylinder is connected with a primary wellhead packing box, the outer port of the primary wellhead packing box is provided with a primary gland, the primary propelling screw rod is in threaded connection with the inner wall of the primary gland, the primary rubber insert is arranged in the guide cylinder, and the primary rubber insert is movably connected with the primary propelling screw rod through a primary connecting block;
Specifically, the one-level guide cylinder inner wall is provided with one-level guide rail, one-level rubber inserts and is provided with the protruding key with one-level guide rail complex, one-level propulsion lead screw's exposure part is provided with one-level gland nut.
Further, the first-stage rubber is inserted into the U-shaped sealing plug, the front ends of the two plug arms of the first-stage rubber are of tooth-shaped structures, and the diameter of a circle formed by the two first-stage rubber plug-in teeth-on split is smaller than that of the polish rod.
Further, the primary rubber insert is fixedly connected with the primary connecting block;
Specifically, the one-level connecting block is provided with the bolt groove, one-level connecting bolt has been placed in the bolt groove, one-level connecting bolt's head is in the bolt groove, one-level connecting bolt's silk portion wears out one-level connecting block and one-level propelling screw fixed connection.
Further, a primary large sealing ring is arranged between the primary gland and the primary guide cylinder;
specifically, a first-stage small sealing ring is arranged between the first-stage gland and the first-stage propelling screw rod;
Specifically, the primary wellhead packing box is provided with an oil receiving groove above the primary guide cylinder.
Further, the secondary sealing device comprises a secondary wellhead packing box, and two secondary sealing mechanisms are oppositely arranged on the side wall of the secondary wellhead packing box;
The secondary linear motion rubber plug comprises a secondary gland, a secondary propelling screw rod and a secondary rubber plug, wherein the inner port of the secondary guide cylinder is connected with a secondary wellhead packing box, the outer port of the secondary wellhead packing box is provided with the secondary gland, the secondary propelling screw rod is in threaded connection with the inner wall of the secondary gland, the secondary rubber plug is arranged in the guide cylinder, and the secondary rubber plug is movably connected with the secondary propelling screw rod through a secondary connecting block;
Specifically, a secondary guide rail is arranged on the inner wall of the secondary guide cylinder, a convex key matched with the secondary guide rail is inserted into the secondary rubber, and a secondary compression nut is arranged on the exposed part of the secondary propelling screw rod;
Specifically, the second rubber sheet can be inserted and received outside the second sealing gate, so that the second sealing gate seals the whole inner cavity of the second guide cylinder.
Further, the secondary guide cylinder is further provided with an oil drain hole between the secondary sealing gate and the secondary gland, and the oil drain hole is provided with a sealing plug for sealing;
Specifically, after the secondary sealing mechanism completes the polish rod sealing, the sealing plate is contacted with the side wall of the secondary rubber insert or the secondary connecting block.
Further, the two-stage rubber inserts are in U-shaped sealing inserts, the front ends of the two insert arms of the two-stage rubber inserts are in tooth-shaped structures, and the diameter of a circle formed by the two-stage rubber inserts by splicing teeth is smaller than that of a polish rod;
specifically, the secondary rubber insert is fixedly connected with the secondary connecting block;
Specifically, the secondary connecting block is provided with a bolt groove, a secondary connecting bolt is placed in the bolt groove, the head of the secondary connecting bolt is arranged in the bolt groove, and the wire part of the secondary connecting bolt penetrates out of the secondary connecting block to be fixedly connected with a secondary pushing screw rod;
Specifically, the two-stage rubber inserts are in U-shaped sealing inserts, the front ends of the two insert arms of the two-stage rubber inserts are in tooth-shaped structures, and the diameter of a circle formed by the two-stage rubber inserts by tooth-to-tooth combination is smaller than that of a polish rod;
Specifically, a second large sealing ring is arranged between the second gland and the second guide cylinder;
specifically, a second-stage small sealing ring is arranged between the second-stage gland and the second-stage propelling screw rod.
Compared with the prior art, the utility model has the following beneficial effects:
1. The continuous pumping wellhead sealing device provided by the utility model can replace the original wellhead packing box and wellhead alignment equipment, is suitable for connection with the original wellhead by replacing a connection mode, and has wide universality.
2. The continuous pumping wellhead sealing device provided by the utility model has the advantages that the internal connection and sealing can be universal, and the reserve of spare parts is reduced.
3. The continuous pumping wellhead sealing device provided by the utility model can seal the wellhead in the upper stage and the lower stage, can be used independently or in the two stages simultaneously, and can strengthen the sealing effect, thereby improving the wellhead safety.
4. The continuous pumping wellhead sealing device provided by the utility model can realize continuous well-stopping packing replacement operation through the alternate application of the upper stage and the lower stage, can also perform secondary maintenance operation through the sealing gate, reduces the risk brought by well-stopping, and improves the oil extraction time rate and the working efficiency of personnel.
Drawings
FIG. 1 is a schematic view of the structure of the wellhead seal of the present utility model;
FIG. 2 is a schematic view of the internal structure of the wellhead seal of the present utility model;
fig. 3 is a schematic structural view of the two-stage sealing gate of the present utility model.
The device comprises a first-stage sealing device, a second-stage clamp, a first-stage wellhead packing box, a first-stage rubber plug, a first-stage connecting block, a first-stage connecting bolt, a first-stage gland, a first-stage pushing screw, a first-stage compression nut, a first-stage guiding track, a first-stage large sealing ring, a first-stage small sealing ring, a second-stage sealing gate, a first-stage annular seat, a second-stage sealing gate, a sealing plate, a second-stage annular seat, a movable connecting piece, a second-stage wellhead packing box, a second-stage gland, a second-stage pushing screw, a second-stage guiding track, a second-stage polished rod and a first-stage sealing gate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1 to 3, the continuous pumping wellhead sealing device provided by the utility model comprises a primary sealing device 1 and a secondary sealing device 2, wherein the lower end of the primary sealing device 1 is connected with the upper end of the secondary sealing device 2 through a primary clamp, the lower end of the secondary sealing device 2 is connected with a wellhead four-way joint through a secondary clamp 3, two primary sealing mechanisms are oppositely arranged on the primary sealing device 1, and two secondary sealing mechanisms are oppositely arranged on the secondary sealing device 2.
The primary sealing device 1 comprises a primary wellhead packing box 4, two primary sealing mechanisms are oppositely arranged on the side wall of the primary wellhead packing box 4, each primary sealing mechanism comprises a primary guide cylinder, a primary gland 8, a primary pushing screw 9 and a primary rubber plug 5, an inner port of each primary guide cylinder is connected with the primary wellhead packing box 4, an outer port of each primary wellhead packing box 4 is provided with a primary gland 8, the primary pushing screw 9 is in threaded connection with the inner wall of the primary gland 8, the primary rubber plug 5 is arranged in the guide cylinder, the primary rubber plug 5 is movably connected with the primary pushing screw 9 through a primary connecting block 6, the primary rubber plug 5 is in a U-shaped sealing plug, two plug arms of the primary rubber plug 5 are of tooth-shaped structures, the diameter of each primary rubber plug 5 for tooth-shaped assembly is smaller than that of a polished rod 19, the inner wall of each primary guide cylinder is provided with a primary guide rail 11, the primary rubber plug 5 is provided with a convex key matched with the primary guide rail 11, the primary pushing screw 9 is provided with a compression nut 10, and the primary screw 9 is provided with a compression nut 10.
The first-stage propelling screw rod 9 is screwed in and out through threads to drive the connecting block 6 and the first-stage rubber insert 5 connected with the connecting block to move together.
The compression nut 10 is screwed after the primary pushing screw 9 moves in place, and is used for fixing the primary pushing screw 9.
The toothed structure enables the tightness of the primary rubber insert 5 to be stronger, and the primary guide rail 11, the convex key and the primary connecting block 6 jointly convert the precession of the primary propelling screw rod 9 into the linear motion of the primary rubber insert 5, so that the rotary offset is avoided.
Specifically, one-level rubber inserts 5 and one-level connecting block fixed connection, one-level connecting block 6 is provided with the bolt groove, one-level connecting bolt 7 has been placed in the bolt groove, one-level connecting bolt 7's head is in the bolt groove, one-level connecting bolt 7's silk portion wears out one-level connecting block 6 and one-level propulsion lead screw 9 fixed connection, makes one-level connecting block 6 can not follow one-level propulsion lead screw 9 and rotate.
Specifically, a primary large sealing ring 12 is arranged between the primary gland 8 and the primary guide cylinder, and a primary small sealing ring 13 is arranged between the primary gland 8 and the primary propelling screw rod 9, so that the primary gland 8 is completely sealed, and crude oil leakage is avoided.
Further, the primary wellhead packing box 4 is provided with a bell mouth above the primary guide cylinder, named as an oil receiving groove, and is used for collecting and storing a small amount of crude oil carried out during the up-and-down movement of the polish rod 19.
The secondary sealing device 2 is similar to the primary sealing device 1, the secondary sealing device 2 comprises a secondary wellhead packing box 15, two secondary sealing mechanisms are oppositely arranged on the side wall of the secondary wellhead packing box 15, each secondary sealing mechanism comprises a secondary guide cylinder, a secondary gland 16, a secondary propelling screw rod 17 and a secondary rubber plug, an inner port of each secondary guide cylinder is connected with the secondary wellhead packing box 15, a secondary gland 16 is arranged at an outer port of each secondary wellhead packing box 15, the secondary propelling screw rod 17 is in threaded connection with the inner wall of the secondary gland 16, the secondary rubber plug is movably connected with the secondary propelling screw rod 17 through a secondary connecting block, the secondary rubber plug is in U-shaped sealing plug, the front ends of two plug arms of the secondary rubber plug are in toothed structures, the diameter of each secondary rubber plug, which is spliced into a circle, is smaller than 19, the inner wall of each secondary guide cylinder is provided with a secondary guide track 18, the secondary rubber plug is provided with a secondary guide screw rod 17, and the secondary guide track is in movable connection with the secondary gland 17, and the secondary guide screw rod 17 is in a sealing plug is in U-shaped sealing plug, and the secondary guide screw rod 17 is in a sealing plug.
Specifically, second grade rubber inserts and second grade connecting block fixed connection, the second grade connecting block is provided with the bolt groove, second grade connecting bolt has been placed in the bolt groove, second grade connecting bolt's head is in the bolt groove, second grade connecting bolt's silk portion wears out second grade connecting block and second grade propulsion lead screw 17 fixed connection, makes the second grade connecting block can not follow second grade propulsion lead screw 17 and rotate.
Specifically, a secondary large sealing ring is arranged between the secondary gland 16 and the secondary guide cylinder, and a secondary small sealing ring is arranged between the secondary gland 16 and the secondary propelling screw rod, so that the secondary gland 16 is completely sealed, and crude oil leakage is avoided.
Further, a second-stage sealing gate 14 is arranged in the second-stage guide cylinder, and the second-stage rubber insert can be received outside the second-stage sealing gate 14, so that the whole inner cavity of the second-stage guide cylinder is sealed by the second-stage sealing gate 14, and the inner second-stage rubber insert, the second-stage large sealing ring and the second-stage small sealing ring are convenient to replace.
The secondary sealing gate 14 comprises an annular seat 14a and a sealing plate 14b, the annular seat 14a is provided with a concave table, the concave table faces towards a wellhead, the sealing plate 14b can be seated in the concave table, the upper end of the sealing plate 14b is connected with the annular seat 14a through a movable connecting piece 14c, the annular seat 14a, the sealing plate 14b and the movable connecting piece 14c are made of rubber materials, the secondary sealing gate 14 is collapsed through deformation of the sealing plate 14a, the secondary sealing gate is pushed into a convex ring arranged in a secondary guide cylinder through a tool, the secondary guide cylinder is further provided with an oil drain hole between the secondary sealing gate 14 and a secondary gland 16, the oil drain hole is provided with a sealing plug to seal the sealing plug, part of crude oil is drained out through the secondary sealing gate 14 through the oil drain hole before the sealing plate 14b is jacked, the secondary guide cylinder is provided with a sealing plate accommodating groove, the secondary rubber is pushed into the sealing plate 14b, the secondary rubber is not blocked from being pushed forward by the sealing plate 14b, and a step of a secondary sealing mechanism is completed after the secondary sealing gate 19 b is completely plugged into the sealing plate 14b or the secondary sealing plate is prevented from being in contact with a secondary connecting block 17.
Example 2:
The embodiment provides a using method of a continuous pumping wellhead sealing device, which specifically comprises the following steps:
S1, setting packing on a primary wellhead packing box 4, connecting a secondary sealing device 2 with a wellhead four-way joint, putting a polished rod 19 in, screwing a primary propelling screw rod 9, enabling two primary rubber inserts 5 to be engaged with the sealed polished rod 19 in pairs, and screwing a primary compression nut 10;
At this time, the sealing plate 14b is pressed against the annular seat 14a by crude oil, sealing the entire inner cavity of the secondary guide cylinder;
S2, when the primary packing needs to be replaced, the secondary pushing screw rod 17 is screwed in, so that two secondary rubber sheets are inserted into the tooth-to-tooth split sealing polished rod 19, the primary compression nut is screwed, and the primary packing is replaced;
S3, when the primary sealing device 1 needs to be maintained, the secondary pushing screw rod 17 is screwed in, so that two secondary rubber sheets are inserted into the tooth-to-tooth split sealing polished rod 19, a secondary compression nut is screwed in, an oil drain plug is dismounted, and crude oil passing through the secondary sealing gate 14 is drained through the oil drain hole;
Then the primary gland 8 is dismounted to maintain the primary sealing device 1;
S4, when the secondary sealing device 2 needs to be maintained, inserting and withdrawing the secondary rubber outside the secondary sealing gate 14, sealing the whole inner cavity of the secondary guide cylinder by the secondary sealing gate 14, and removing the secondary gland 16 for maintenance
The parts themselves which are not discussed in the application and the connection modes of the parts in the application all belong to the known technology in the technical field. The preparation can be directly applied and is not repeated.
In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, as they are used in a fixed or removable connection, or as they are integral with one another, as they are directly or indirectly connected through intervening media. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The continuous pumping wellhead sealing device comprises a primary sealing device and a secondary sealing device and is characterized in that the lower end of the primary sealing device is connected with the upper end of the secondary sealing device;
The primary sealing device comprises two primary sealing mechanisms which are oppositely arranged, wherein the primary sealing mechanism comprises a primary guide cylinder and a primary linear motion rubber insert in the primary guide cylinder;
The secondary sealing device comprises two secondary sealing mechanisms which are oppositely arranged, wherein each secondary sealing mechanism comprises a secondary guide cylinder and a secondary linear motion rubber plug and a secondary sealing gate inside the secondary guide cylinder.
2. The continuous pumping wellhead sealing device of claim 1, wherein the secondary seal gate comprises an annular seat, a seal plate;
The annular seat is provided with a concave table, the concave table faces the wellhead, and the sealing plate can be seated in the concave table;
The upper end of the sealing plate is connected with the annular seat through the movable connecting piece, and the annular seat, the sealing plate and the movable connecting piece are all made of rubber materials;
the secondary sealing gate is arranged in a convex ring in the secondary guide cylinder;
The secondary guide cylinder is provided with a sealing plate accommodating groove.
3. The continuous pumping wellhead sealing device according to claim 1, wherein the lower end of the primary sealing device is connected with the upper end of the secondary sealing device through a primary clamp;
The lower end of the secondary sealing device is connected with the wellhead four-way joint through a secondary clamp.
4. The continuous pumping wellhead sealing device according to claim 1, wherein the primary sealing device comprises a primary wellhead packing box, and two primary sealing mechanisms are oppositely arranged on the side wall of the primary wellhead packing box;
The primary linear motion rubber plug comprises a primary gland, a primary propelling screw rod and a primary rubber plug, the inner port of the primary guide cylinder is connected with a primary wellhead packing box, the outer port of the primary wellhead packing box is provided with a primary gland, the primary propelling screw rod is in threaded connection with the inner wall of the primary gland, the primary rubber plug is arranged in the guide cylinder, and the primary rubber plug is movably connected with the primary propelling screw rod through a primary connecting block;
the inner wall of the primary guide cylinder is provided with a primary guide rail, the primary rubber is inserted and provided with a convex key matched with the primary guide rail, and the exposed part of the primary propelling screw rod is provided with a primary compression nut.
5. The continuous pumping wellhead sealing device according to claim 4, wherein the primary rubber insert is a U-shaped sealing insert, the front ends of two insert arms of the primary rubber insert are of tooth-shaped structures, and the diameter of a circle formed by the two primary rubber inserts by tooth-to-tooth combination is smaller than that of a polish rod.
6. The continuous pumping wellhead sealing device of claim 4, wherein the primary rubber insert is fixedly connected with a primary connection block;
The primary connecting block is provided with a bolt groove, a primary connecting bolt is placed in the bolt groove, the head of the primary connecting bolt is arranged in the bolt groove, and the wire part of the primary connecting bolt penetrates out of the primary connecting block and is fixedly connected with a primary propelling screw rod.
7. The continuous pumping wellhead sealing device according to claim 4, wherein a primary large sealing ring is arranged between the primary gland and the primary guide cylinder;
A first-stage small sealing ring is arranged between the first-stage gland and the first-stage propelling screw rod;
the primary wellhead packing box is provided with an oil receiving groove above the primary guide cylinder.
8. The continuous pumping wellhead sealing device according to claim 2, wherein the secondary sealing device comprises a secondary wellhead packing box, and two secondary sealing mechanisms are oppositely arranged on the side wall of the secondary wellhead packing box;
The secondary linear motion rubber insert comprises a secondary gland, a secondary propelling screw rod and a secondary rubber insert, wherein the inner port of the secondary guide cylinder is connected with a secondary wellhead packing box, the outer port of the secondary wellhead packing box is provided with the secondary gland, the secondary propelling screw rod is in threaded connection with the inner wall of the secondary gland, the secondary rubber insert is arranged in the guide cylinder, and the secondary rubber insert is movably connected with the secondary propelling screw rod through a secondary connecting block;
The inner wall of the secondary guide cylinder is provided with a secondary guide rail, the secondary rubber is inserted with a convex key matched with the secondary guide rail, and the exposed part of the secondary propelling screw rod is provided with a secondary compression nut;
The second rubber sheet can be inserted and received outside the second sealing gate, so that the second sealing gate seals the whole inner cavity of the second guide cylinder.
9. The continuous pumping wellhead sealing device according to claim 8, wherein the secondary guide cylinder is further provided with an oil drain hole between the secondary seal gate and the secondary gland, the oil drain hole being provided with a sealing plug seal;
after the secondary sealing mechanism completes the polish rod sealing, the sealing plate is contacted with the side wall of the secondary rubber insert or the secondary connecting block.
10. The continuous pumping wellhead sealing device according to claim 8, wherein the secondary rubber insert is a U-shaped sealing insert, the front ends of two insert arms of the secondary rubber insert are of tooth-shaped structures, and the diameter of a circle formed by the two secondary rubber inserts in a tooth-to-tooth combination mode is smaller than that of a polished rod;
the secondary rubber insert is fixedly connected with the secondary connecting block;
The secondary connecting block is provided with a bolt groove, a secondary connecting bolt is placed in the bolt groove, the head of the secondary connecting bolt is arranged in the bolt groove, and the wire part of the secondary connecting bolt penetrates out of the secondary connecting block to be fixedly connected with a secondary propelling screw rod;
The two-stage rubber inserts are U-shaped sealing inserts, the front ends of the two insert arms of the two-stage rubber inserts are of tooth-shaped structures, and the diameter of a circle formed by the two-stage rubber inserts by opposite tooth-splicing is smaller than that of the polish rod;
a second large sealing ring is arranged between the second gland and the second guide cylinder;
A secondary small sealing ring is arranged between the secondary gland and the secondary propelling screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421079171.3U CN222228508U (en) | 2024-05-17 | 2024-05-17 | Non-stop pumping wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421079171.3U CN222228508U (en) | 2024-05-17 | 2024-05-17 | Non-stop pumping wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222228508U true CN222228508U (en) | 2024-12-24 |
Family
ID=93918718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421079171.3U Active CN222228508U (en) | 2024-05-17 | 2024-05-17 | Non-stop pumping wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222228508U (en) |
-
2024
- 2024-05-17 CN CN202421079171.3U patent/CN222228508U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108979580B (en) | Oil-water well pressurized overhaul operation device | |
| CN211287582U (en) | Non-killing well under-pressure semi-automatic gate changing device | |
| CN112502659A (en) | Ram blowout preventer for petroleum plugging and using method thereof | |
| CN115045630A (en) | Conversion type Christmas tree port sealing device for oil field | |
| WO2023070852A1 (en) | Liquid end and plunger pump | |
| CN107178333B (en) | Polished rod sealer | |
| CN113216888B (en) | A light rod magnetic sealing structure device | |
| CN209717845U (en) | A peeling machine for outer rod or tube sealing rubber sleeve | |
| CN103759073B (en) | A kind of integral type level pipe jointer | |
| CN210622755U (en) | SAGD oil well doublestage polished rod sealing device | |
| CN106468150A (en) | Polished Rod Sealing Device | |
| CN219412524U (en) | A Two-Stage Piston Type Casing Pressure Device Used for Rapid Maintenance of Water Injection Wells | |
| CN217207862U (en) | Pneumatic rubber tube valve | |
| CN217713662U (en) | Chemical production governing valve convenient to maintain | |
| CN215332752U (en) | Drill rod cement head with good sealing performance | |
| CN215672101U (en) | Wellhead gate valve replacing device under pressure | |
| CN116557663A (en) | A hydraulic hose assembly with a tight connection structure | |
| CN210069446U (en) | Oil pump reliable in connection and better in sealing performance | |
| CN212249970U (en) | screw pump drive | |
| CN208123734U (en) | A kind of gas pipeline plugging device | |
| CN211201914U (en) | A double-pipe dispensing device with pressure | |
| CN204941426U (en) | Polished Rod Sealing Device | |
| CN220840003U (en) | Dismounting device for top drive plug valve | |
| CN220792412U (en) | Novel oil pipe joint | |
| CN223648563U (en) | High-efficient water-saving water supply pipeline valve for building engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |