Single-plug and double-plug fast-assembling clamp type cement head for casing pipe

Abstract

The utility model discloses a single-plug and double-plug fast-assembling clamp type cement head for a casing pipe, which belongs to the technical field of oil drilling equipment and comprises a male head and a female head, a first sealing ring is arranged between the male head and the female head, and a fastening wing nut in threaded connection with the female head is sleeved on the surface of the male head. A sealing mechanism in contact with the female head is arranged on the inner side of the fastening wing nut; the sealing mechanism can flexibly seal a gap between the fastening wing nut and the female head after the fastening wing nut is fastened and installed, so that external impurities such as dust and steam can be effectively blocked outside, the problems of corrosion, blockage and the like of a threaded connection structure are effectively reduced, the difficulty of disassembling and assembling the union joint by subsequent workers is further reduced, and the working efficiency is improved. Meanwhile, when the sealing mechanism is not used, the whole sealing mechanism is in a contraction state, assembling and disassembling of the female head and the fastening wing nut cannot be affected, and the assembling and disassembling difficulty of workers is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum drilling equipment, in particular to a single-plug or double-plug quick-install clamp-type cement head for casing. Background Art

[0002] A cement head is a cementing device installed on top of the casing during cementing to connect the casing to the surface manifold. Currently, single- and double-plug quick-install clamp-type cement heads for casing mostly use unions as clamps. The existing unions, which are easy to install and maintain, usually consist of a male head, a female head, a fastening wing nut, and a sealing ring.

[0003] Since the threaded connections between the male and female heads and the fastening wing nuts are exposed to the outside, and the cement heads usually need to be exposed to the outside world during use, dust, moisture and other impurities can easily penetrate into the threaded connections during this process, which can easily cause the threaded connection structure to rust, blockage and other problems, increasing the difficulty for subsequent staff to disassemble and assemble the union.

[0004] Based on this, the utility model designs a single-plug and double-plug quick-install clamp-type cement head for casing to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a single-plug or double-plug quick-install clamp-type cement head for casing.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A single- or double-plug quick-install clamp-type cement head for casing includes a male head and a female head, a first sealing ring is provided between the male head and the female head, a fastening wing nut is sleeved on the surface of the male head and is threadedly connected to the female head, and a sealing mechanism in contact with the female head is provided on the inner side of the fastening wing nut.

[0008] Furthermore, an annular cavity is opened on the inner side of the fastening wing mother, and the sealing mechanism includes an annular airbag embedded and installed inside the annular cavity. The annular airbag wraps around the surface of the female head, and the annular airbag is in an expanded state at this time.

[0009] Furthermore, an adjustment cavity connected to the annular cavity is provided inside the fastening wing nut, and the sealing mechanism also includes an adjustment component, which includes a threaded column rotatably connected to the inside of the adjustment cavity, one end of the threaded column passes through the adjustment cavity and extends to the outside of the fastening wing nut, and an extrusion plate is threadedly connected to the surface of the threaded column, and an adjustment airbag fixedly connected to and connected to the annular airbag is fixedly connected between the extrusion plate and the adjustment cavity, and the adjustment airbag is in a deflated state at this time.

[0010] Furthermore, the cross-sectional shapes of the regulating cavity and the extrusion plate are both matching rectangles.

[0011] Furthermore, the cross-sectional shape of the regulating airbag is a square frame, and the regulating airbag is sleeved on the surface of the threaded column.

[0012] Furthermore, a slot is provided at one end of the threaded column, a guide groove connected to the slot is provided inside the threaded column, a rotating opening connected to the slot is provided on the surface of the threaded column, an adjusting column is inserted into the slot, and a slider is fixedly connected to the surface of the adjusting column with a sliding connection to the guide groove.

[0013] Furthermore, the number of the guide grooves and the number of the sliders are both two, and the two guide grooves and the two sliders are symmetrically distributed on both sides of the adjustment column.

[0014] Furthermore, the threaded column is a magnetic metal material component, and the adjustment column is a permanent magnet material component.

[0015] Furthermore, one end of the adjusting column is fixedly connected to a ball, and the diameter of the ball is larger than the diameter of the adjusting column. Beneficial effects

[0016] 1. The sealing mechanism can flexibly seal the gap between the fastening wing nut and the female head after the fastening wing nut is fastened and installed. This can effectively block external impurities such as dust and moisture, effectively reducing problems such as rust and blockage in the threaded connection structure, thereby reducing the difficulty of subsequent disassembly and assembly of the union by staff. At the same time, when not in use, the sealing mechanism is also in a retracted state as a whole, which will not affect the assembly and disassembly of the female head and the fastening wing nut, thereby reducing the difficulty of assembly and disassembly for staff.

[0017] 2. An adjustable adjustment rod is used. When the staff needs to adjust the threaded column, the staff can quickly adjust the adjustment rod into place, so that it serves as a vertical force arm for rotating the threaded column to reduce the difficulty of adjusting the threaded column. At the same time, a concealable design is adopted, which can also reduce the long-term exposure of the adjustment rod to the outside world, thereby reducing interference with the outside world or corrosion or damage by the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a single-plug or double-plug quick-install clamp-type cement head for casing according to the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly of the overall structure of the single-plug and double-plug quick-install clamp-type cement head for casing and the cylinder of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the overall structure of the single-plug and double-plug quick-install clamp-type cement head for casing of the utility model;

[0022] Figure 4 This is a structural diagram of a single-plug or double-plug quick-install clamp-type cement head sealing mechanism for casing according to the present invention;

[0023] Figure 5 It is an exploded schematic diagram of the partial structure of the single-plug and double-plug quick-install clamp-type cement head sealing mechanism for casing of the utility model.

[0024] The numbers in the figure represent:

[0025] 100, male connector; 200, female connector; 300, first sealing ring; 400, fastening wing nut; 410, annular cavity; 420, adjusting cavity; 500, sealing mechanism; 510, annular airbag; 520, adjusting assembly; 521, threaded column; 522, extrusion plate; 523, adjusting airbag; 524, slot; 525, guide groove; 526, rotating mouth; 527, adjusting column; 528, slider; 529, ball. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the appendix of the specification. Figure 1-5 , a single-plug or double-plug quick-install clamp-type cement head for casing, comprising a male head 100 and a female head 200, a first sealing ring 300 being provided between the male head 100 and the female head 200, a fastening wing nut 400 being threadedly connected to the female head 200 being sleeved on the surface of the male head 100, and a sealing mechanism 500 being provided on the inner side of the fastening wing nut 400 in contact with the female head 200;

[0029] The cementing head includes a cylinder for accommodating rubber plugs. A corresponding number of rubber plugs can be placed inside the cylinder according to needs. The top of the cylinder is connected to an end cap, which is used to seal the internal space of the cement head. A stop pin is installed on the surface of the cylinder to stop the rubber plug and prevent it from falling prematurely during the cementing process.

[0030] When the staff needs to connect the cylinder and the cement casing together, they first thread the male head 100 and the female head 200 to the opposite ends of the cylinder and the cement casing respectively, then align the male head 100 and the female head 200 together, and screw the fastening wing nut 400 on the surface of the female head 200, and then rotate the fastening wing nut 400 in the corresponding direction until the male head 100 and the female head 200 are tightly connected together. At this time, the cylinder is connected to the cement casing through the male head 100 and the female head 200, and the staff can carry out the cement slurry pouring operation normally.

[0031] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown in the figure, as a preferred embodiment of the present invention, the inner side of the fastening wing nut 400 is provided with an annular cavity 410, and the sealing mechanism 500 includes an annular airbag 510 embedded and installed inside the annular cavity 410. The annular airbag 510 wraps around the surface of the female head 200 and is in an expanded state at this time; the interior of the fastening wing nut 400 is provided with an adjustment cavity 420 connected to the annular cavity 410, and the sealing mechanism 500 also includes an adjustment component 520, which includes a threaded column 521 rotatably connected to the interior of the adjustment cavity 420. One end of the threaded column 521 passes through the adjustment cavity 420 and extends to the outside of the fastening wing nut 400. The surface of the threaded column 521 is threadedly connected with an extrusion plate 522. An adjustment airbag 523 fixedly connected to and communicated with the annular airbag 510 is fixedly connected between the extrusion plate 522 and the adjustment cavity 420. The adjustment airbag 523 is in a deflated state at this time; the cross-sectional shapes of the adjustment cavity 420 and the extrusion plate 522 are both matching rectangles; the cross-sectional shape of the adjustment airbag 523 is a square frame, and the adjustment airbag 523 is sleeved on the surface of the threaded column 521.

[0032] In an embodiment of the present invention, after the male head 100 and the female head 200 are connected, the staff only needs to rotate the threaded column 521 in the corresponding direction. The threaded column 521 drives the extrusion plate 522 to approach the adjusting airbag 523 through rotation, and the gas inside the adjusting airbag 523 is squeezed into the annular airbag 510. The annular airbag 510 expands along the annular cavity 410 and expands toward the female head 200 until the annular airbag 510 wraps the surface of the female head 200. At this time, the annular airbag 510 can flexibly seal the gap between the fastening wing nut 400 and the female head 200, effectively blocking external impurities such as dust and moisture, effectively reducing the problems of rust and blockage of the threaded connection structure, and thereby reducing the difficulty for subsequent staff to disassemble and assemble the union joint.

[0033] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, a slot 524 is provided at one end of the threaded column 521, a guide groove 525 connected to the slot 524 is provided inside the threaded column 521, a rotating mouth 526 connected to the slot 524 is provided on the surface of the threaded column 521, an adjusting column 527 is inserted into the interior of the slot 524, and a slider 528 is fixedly connected to the surface of the adjusting column 527 with a sliding connection to the guide groove 525; the number of the guide grooves 525 and the slider 528 are both two, and the two guide grooves 525 and the two sliders 528 are symmetrically distributed on both sides of the adjusting column 527; the threaded column 521 is a magnetic metal material component, and the adjusting column 527 is a permanent magnet material component; one end of the adjusting column 527 is fixedly connected to a ball 529, and the diameter of the ball 529 is larger than the diameter of the adjusting column 527.

[0034] In an embodiment of the present invention, when the staff needs to quickly rotate the threaded column 521, the staff only needs to pull the adjusting column 527 out of the slot 524 through the ball 529, and the adjusting column 527 drives the slider 528 to move along the inside of the guide groove 525. When the slider 528 collides with the guide groove 525, the adjusting column 527 just enters the rotating mouth 526. The staff can then rotate the adjusting column 527 along the rotating mouth 526 to a state perpendicular to the threaded column 521. At this time, the adjusting column 527 effectively extends the rotation arm of the threaded column 521, so that the staff can rotate the threaded column 521 stably and easily, reducing the adjustment burden of the staff.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A single- or double-plug quick-install clamp-type cement head for casing, comprising a male head (100) and a female head (200), wherein a first sealing ring (300) is provided between the male head (100) and the female head (200), and a fastening wing nut (400) threadedly connected to the female head (200) is provided on the surface of the male head (100), characterized in that: A sealing mechanism (500) in contact with the female head (200) is provided on the inner side of the fastening wing nut (400); An annular cavity (410) is provided on the inner side of the fastening wing mother (400), and the sealing mechanism (500) includes an annular airbag (510) embedded and installed inside the annular cavity (410). The annular airbag (510) is wrapped around the surface of the female head (200), and the annular airbag (510) is in an expanded state at this time.

2. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 1, characterized in that: The interior of the fastening wing nut (400) is provided with an adjustment cavity (420) which is in communication with the annular cavity (410). The sealing mechanism (500) further includes an adjustment component (520). The adjustment component (520) includes a threaded column (521) which is rotatably connected to the interior of the adjustment cavity (420). One end of the threaded column (521) passes through the adjustment cavity (420) and extends to the outside of the fastening wing nut (400). An extrusion plate (522) is threadedly connected to the surface of the threaded column (521). An adjustment airbag (523) which is fixedly connected to and in communication with the annular airbag (510) is fixedly connected between the extrusion plate (522) and the adjustment cavity (420). The adjustment airbag (523) is in a deflated state at this time.

3. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 2, characterized in that: The cross-sectional shapes of the regulating cavity (420) and the extrusion plate (522) are both matching rectangles.

4. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 2, characterized in that: The cross-sectional shape of the regulating airbag (523) is a square frame, and the regulating airbag (523) is sleeved on the surface of the threaded column (521).

5. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 2, characterized in that: A slot (524) is provided at one end of the threaded column (521), a guide groove (525) communicating with the slot (524) is provided inside the threaded column (521), a rotating opening (526) communicating with the slot (524) is provided on the surface of the threaded column (521), an adjusting column (527) is inserted into the interior of the slot (524), and a sliding block (528) slidably connected to the guide groove (525) is fixedly connected to the surface of the adjusting column (527).

6. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 5, characterized in that: The number of the guide grooves (525) and the number of the sliders (528) are both two, and the two guide grooves (525) and the two sliders (528) are symmetrically distributed on both sides of the adjustment column (527).

7. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 5, characterized in that: The threaded column (521) is a magnetic metal material component, and the adjustment column (527) is a permanent magnet material component.

8. The single-plug or double-plug quick-install clamp type cement head for casing according to claim 5, characterized in that: One end of the adjusting column (527) is fixedly connected to a ball (529), and the diameter of the ball (529) is larger than the diameter of the adjusting column (527).

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