CN216714342U

CN216714342U - Well head device that leak protection performance is good

Info

Publication number: CN216714342U
Application number: CN202123099478.9U
Authority: CN
Inventors: 陈月标
Original assignee: Jiangsu Pusheng Petrochemical Machinery Co ltd
Current assignee: Jiangsu Pusheng Petrochemical Machinery Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-06-10
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a wellhead device with good leakage-proof performance, which comprises a wellhead device body and a sealing mechanism, wherein the top of an inner cavity of the wellhead device body is fixedly provided with a sleeve, the inner cavity of the wellhead device body is movably connected with an oil pipe hanger which penetrates through the sleeve and extends to the outside of the wellhead device body, the inside of the sleeve is movably connected with a sealing ring which is sleeved on the surface of the oil pipe hanger, and the top wall of the wellhead device body is internally provided with a cavity. This well head device that leak protection performance is good, exert decurrent power for the sealing washer through four briquettings, make the sealing washer closely laminate in telescopic inner chamber, and then increase the leakproofness, when appearing leaking simultaneously, only need rotate the lantern ring, under the effect of the lantern ring, four movable blocks can the downstream to extrude four springs, and through the elasticity influence of spring, exert bigger downward effort to the sealing washer, make the inseparabler laminating of sealing washer in the junction, thereby play the effect that prevents revealing.

Description

Well head device that leak protection performance is good

Technical Field

The utility model relates to the technical field of wellhead devices, in particular to a wellhead device with good leakage-proof performance.

Background

The wellhead device is composed of a pipe head, a blowout preventer stack and the like, is used for controlling the pressure and direction of gas and liquid fluids, comprises a Christmas tree and a gas production tree, and is a device which is arranged at a wellhead, hangs a casing and an oil pipe, and seals annular spaces of the oil pipe, the casing and each layer of casing in oil and natural gas drilling.

In the exploitation of oil, a wellhead device is used, but the existing wellhead device has poor sealing performance in the using process, and the oil can be leaked due to long-time use, so that the waste of resources is caused, and the exploitation efficiency of the oil is even influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the wellhead device with good leakage-proof performance has the advantages of good leakage-proof performance and the like, and solves the problems that the existing wellhead device is poor in sealing performance, oil is likely to leak, resources are wasted, and even the oil exploitation efficiency is affected.

In order to achieve the purpose, the utility model provides the following technical scheme: a well head device with good leakage-proof performance comprises a well head device body and a sealing mechanism, wherein a sleeve is fixedly installed at the top of an inner cavity of the well head device body, the inner cavity of the well head device body is movably connected with an oil pipe hanger which penetrates through the sleeve and extends to the outside of the well head device body, a sealing ring which is sleeved on the surface of the oil pipe hanger is movably connected in the sleeve, a cavity is formed in the top wall of the well head device body, a fixed block is fixedly installed in the cavity, and the sealing mechanism is arranged on the surfaces of the cavity and the well head device body;

sealing mechanism includes the lantern ring and threaded rod, the lantern ring cup joints in the surface top of wellhead assembly body, threaded rod swing joint is on the fixed block, the inner chamber fixed surface of the lantern ring installs and runs through the wellhead assembly body and extend to the solid fixed ring in the cavity, gu fixed ring's inner chamber fixed surface installs the connecting block, connecting block other end fixed mounting has the ring gear, the threaded rod is close to solid fixed ring's one end fixed mounting have with ring gear meshed gear, the surperficial threaded connection of threaded rod has the slider, the surperficial swing joint of slider has the connecting rod, the other end swing joint of connecting rod has the movable block that runs through and extend to wellhead assembly body inner chamber, the lower fixed surface of movable block installs the spring, the lower fixed surface of spring installs the briquetting with the sealing washer laminating.

Further, the overlooking cross section of the cavity is a circular ring, the number of the fixing blocks is eight, and the eight fixing blocks are distributed in the cavities on the left side, the right side, the front side and the rear side of the oil pipe hanger in pairs.

Furthermore, the cross-section of connecting block is the U-shaped, and the quantity of connecting block is four, and four connecting blocks equidistance distribute in the cavity.

Furthermore, the number of the threaded rods is four, and the number of the threaded rods corresponds to the number of the gears, the sliding blocks, the connecting rods, the movable blocks, the springs and the pressing blocks one to one.

Furthermore, one end of the threaded rod is rotatably connected with the fixed block, and the other end of the threaded rod penetrates through and extends to the other side of the other fixed block.

Furthermore, the cross section of the sliding block is L-shaped, and the upper surface and the lower surface of the sliding block are attached to the top and the bottom of the cavity.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this well head device that leak protection performance is good, through being equipped with sealing mechanism, four springs in the sealing mechanism, exert decurrent power for the sealing washer through four briquettings, make the sealing washer closely laminate in telescopic inner chamber, and then increase the leakproofness, when appearing leaking simultaneously, only need rotate the lantern ring, under the effect of the lantern ring, four movable blocks can remove downwards, and extrude four springs, and the elasticity through the spring influences, exert bigger downward effort to the sealing washer, make the inseparabler laminating in the junction of sealing washer, thereby play the effect that prevents to reveal, the purpose that leak protection performance is good has been realized.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the region A of FIG. 1 according to the present invention.

In the figure: 1 well head device body, 2 sleeves, 3 tubing hangers, 4 sealing rings, 5 cavities, 6 fixing blocks, 7 lantern rings, 8 fixing rings, 9 connecting blocks, 10 toothed rings, 11 threaded rods, 12 gears, 13 sliders, 14 connecting rods, 15 movable blocks, 16 springs and 17 pressing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the wellhead assembly with good leakage-proof performance in this embodiment comprises a wellhead assembly body 1 and a sealing mechanism, wherein a sleeve 2 is fixedly installed at the top of an inner cavity of the wellhead assembly body 1, an oil pipe hanger 3 penetrating through the sleeve 2 and extending to the outside of the wellhead assembly body 1 is movably connected to the inner cavity of the wellhead assembly body 1, a sealing ring 4 sleeved on the surface of the oil pipe hanger 3 is movably connected to the inner cavity of the sleeve 2, the sealing ring 4 plays a role of sealing and leakage-proof, a cavity 5 is formed in the top wall of the wellhead assembly body 1, the cavity 5 is an annular cavity, eight fixing blocks 6 are fixedly installed in the cavity 5, two of the eight fixing blocks 6 form a group and are distributed in the cavities 5 on the left side and the right side and the front side and the rear side of the oil pipe hanger 3, the sealing mechanism is arranged on the surfaces of the cavity 5 and the wellhead assembly body 1, and plays a role of enhancing the sealing performance through the sealing mechanism, thereby enhancing the leakage-proof performance.

Referring to fig. 1-2, in order to enhance the sealing performance, the sealing mechanism in this embodiment includes a collar 7 sleeved on the top of the outer surface of the wellhead assembly body 1, a fixing ring 8 penetrating through the wellhead assembly body 1 and extending into the cavity 5 is fixedly installed on the surface of an inner cavity of the collar 7, four connecting blocks 9 are fixedly installed on the surface of the inner cavity of the fixing ring 8, the four connecting blocks 9 are equidistantly distributed in the cavity 5, and a toothed ring 10 is fixedly installed at the other end of each connecting block 9.

When the lantern ring 7 rotates, the toothed ring 10 can be driven to rotate through the fixing ring 8 and the four connecting blocks 9.

The sealing mechanism also comprises four threaded rods 11 which are respectively movably connected to the four groups of fixed blocks 6, one end of each threaded rod 11 is rotatably connected with the fixed block 6 close to one side of the oil pipe hanger 3, the other end of each threaded rod 11 penetrates through and extends to the other side of the fixed block 6 far away from one side of the oil pipe hanger 3, and one ends of the four threaded rods 11 close to the fixed ring 8 are fixedly provided with gears 12 meshed with the toothed ring 10, so that when the toothed ring 10 rotates, the four gears 12 also rotate along with the toothed ring 10, the surface of each threaded rod 11 is in threaded connection with a sliding block 13 with an L-shaped section, the upper surface and the lower surface of each sliding block 13 are attached to the top and the bottom of the cavity 5, when the threaded rods 11 rotate, the sliding blocks 13 only horizontally move, the surfaces of the sliding blocks 13 are rotatably connected with connecting rods 14, and the other ends of the connecting rods 14 are rotatably connected with movable blocks 15 which penetrate through and extend to the inner cavity of the wellhead device body 1, the lower surface of the movable block 15 is fixedly provided with a spring 16, the lower surface of the spring 16 is fixedly provided with a pressing block 17 attached to the sealing ring 4, and the sealing ring 4 is tightly attached to the sleeve 2 under the action of the pressing block 17 and the spring 16.

The working principle of the above embodiment is as follows:

the four pressing blocks 17 are attached to the surface of the sealing ring 4 through the elastic force of the four springs 16, downward force is applied to the sealing ring 4 at the same time, the sealing ring 4 is tightly attached to the sleeve 2, the sealing effect is improved, meanwhile, when leakage occurs, only the lantern ring 7 needs to be rotated, the toothed ring 10 is driven to rotate under the action of the fixing ring 8 and the connecting block 9, the toothed ring 10 drives the four gears 12 meshed with the toothed ring to rotate, the four threaded rods 11 rotate, the sliding block 13 moves towards one side close to the oil pipe hanger 3 through the rotation of the threaded rods 11, as the two ends of the connecting rod 14 are in rotating connection, and the movable block 15 can only horizontally move up and down, when the sliding block 13 moves, the movable block 15 is driven to move down through the connecting rod 14 and extrude the springs 16, and as the springs 16 are extruded, larger downward acting force is applied to the sealing ring 4, make sealing washer 4 inseparabler laminating in the junction to play the effect that prevents revealing, realized the purpose that the leak protection performance is good.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a well head device that leak protection performance is good, includes well head device body (1) and sealing mechanism, its characterized in that: the wellhead device comprises a wellhead device body (1), wherein a sleeve (2) is fixedly installed at the top of an inner cavity of the wellhead device body (1), an oil pipe hanger (3) which penetrates through the sleeve (2) and extends to the outside of the wellhead device body (1) is movably connected to the inner cavity of the wellhead device body (1), a sealing ring (4) which is sleeved on the surface of the oil pipe hanger (3) is movably connected to the inner part of the sleeve (2), a cavity (5) is formed in the top wall of the wellhead device body (1), a fixing block (6) is fixedly installed in the cavity (5), and a sealing mechanism is arranged on the surfaces of the cavity (5) and the wellhead device body (1);

the sealing mechanism comprises a sleeve ring (7) and a threaded rod (11), the sleeve ring (7) is sleeved on the top of the outer surface of the wellhead device body (1), the threaded rod (11) is movably connected onto a fixed block (6), a fixed ring (8) which penetrates through the wellhead device body (1) and extends into a cavity (5) is fixedly arranged on the surface of the inner cavity of the sleeve ring (7), a connecting block (9) is fixedly arranged on the surface of the inner cavity of the fixed ring (8), a toothed ring (10) is fixedly arranged at the other end of the connecting block (9), a gear (12) which is meshed with the toothed ring (10) is fixedly arranged at one end, close to the fixed ring (8), of the threaded rod (11), a sliding block (13) is connected to the surface of the threaded rod (11), a connecting rod (14) is movably connected to the surface of the sliding block (13), a movable block (15) which penetrates through and extends into the inner cavity of the wellhead device body (1) is movably connected to the other end of the connecting rod (14), the lower fixed surface of movable block (15) installs spring (16), the lower fixed surface of spring (16) installs briquetting (17) of laminating with sealing washer (4).

2. A wellhead assembly having improved leak resistance as defined in claim 1, in which: the overlooking cross section of the cavity (5) is a circular ring, the number of the fixing blocks (6) is eight, and the eight fixing blocks (6) are distributed in the cavities (5) on the left side, the right side, the front side and the rear side of the oil pipe hanger (3) in pairs.

3. A wellhead assembly as claimed in claim 1 having improved leak resistance, wherein: the cross-section of connecting block (9) is the U-shaped, and the quantity of connecting block (9) is four, and four connecting block (9) equidistance distribute in cavity (5).

4. A wellhead assembly having improved leak resistance as defined in claim 1, in which: the number of the threaded rods (11) is four, and the number of the threaded rods (11) corresponds to the number of the gears (12), the sliding blocks (13), the connecting rods (14), the movable blocks (15), the springs (16) and the pressing blocks (17) one by one.

5. A wellhead assembly having improved leak resistance as defined in claim 1, in which: one end of the threaded rod (11) is rotatably connected with the fixed block (6), and the other end of the threaded rod (11) penetrates through and extends to the other side of the other fixed block (6).

6. A wellhead assembly having improved leak resistance as defined in claim 1, in which: the cross section of the sliding block (13) is L-shaped, and the upper surface and the lower surface of the sliding block (13) are attached to the top and the bottom of the cavity (5).