CN205297375U - Screw thread protection device - Google Patents
Screw thread protection device Download PDFInfo
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- CN205297375U CN205297375U CN201521106606.XU CN201521106606U CN205297375U CN 205297375 U CN205297375 U CN 205297375U CN 201521106606 U CN201521106606 U CN 201521106606U CN 205297375 U CN205297375 U CN 205297375U
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- ring flange
- screw thread
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- 210000002445 nipple Anatomy 0.000 claims description 72
- 230000008878 coupling Effects 0.000 claims description 35
- 238000010168 coupling process Methods 0.000 claims description 35
- 238000005859 coupling reaction Methods 0.000 claims description 35
- 230000001105 regulatory effect Effects 0.000 claims description 32
- 230000000630 rising effect Effects 0.000 claims description 25
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
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Abstract
The utility model discloses a screw thread protection device belongs to the oil machinery field. The method comprises the following steps: the assembly part comprises a semi-cylindrical sleeve and a semi-cylindrical flange fixedly connected with the semi-cylindrical sleeve, and a curved surface notch is formed in the semi-cylindrical flange; during the use, the first assembly part and the second assembly part are buckled on the lifting short section, the fixing part is used for fixedly connecting the first assembly part and the second assembly part, the semi-cylindrical sleeve of the first assembly part and the semi-cylindrical sleeve of the second assembly part form a cylindrical sleeve, the semi-cylindrical flange disc of the first assembly part and the semi-cylindrical flange disc of the second assembly part form a cylindrical flange disc, the cylindrical sleeve is connected to the bottom flange in an abutting mode, and the bearing adjusting part is arranged on the cylindrical flange disc and is connected to the sleeve blind flange in an abutting mode. The utility model provides a problem of the easy damage of screw thread, reached the effect of avoiding the screw thread to damage. The utility model is used for the protection of screw thread.
Description
Technical field
This utility model relates to field of petroleum machinery, particularly to a kind of screw thread protection device.
Background technology
In petroleum industry, wellhead assembly generally includes production tree, big four, end flange and raises pipe nipple etc., and wherein, big four is arranged on production tree, and end flange is arranged on the bottom of big four, raises pipe nipple and passes through screwed connection with end flange.
In correlation technique, oil pipe in well is suspended on big four by tubing hanger, and oil pipe is positioned at sleeve pipe, sleeve pipe can include casing coupling, casing coupling does not pass through screwed connection with one end of end Flange joint with raising pipe nipple, and in oil well Operating Pressure work progress, the equipment with pressure for well workover is arranged on big four also by fixing bolt. in oil well Operating Pressure work progress, when lifting up tubing string in the wells such as oil pipe when workover rig, raise the screw thread between pipe nipple and end flange and the screw thread between rising pipe nipple and casing coupling needs to carry the weight of equipment with pressure, when oil pipe being carried out upper button or during shackle, raise the screw thread between pipe nipple and end flange and raise the screw thread between pipe nipple and casing coupling and need to carry the weight of tubing string in the well such as weight and oil pipe of equipment with pressure, therefore, the weight raising the screw thread between pipe nipple and end flange and the carrying of the screw thread between rising pipe nipple and casing coupling is all unstable.
In realizing process of the present utility model, inventor have found that correlation technique at least there is problems in that
Restriction by execution conditions, in well workover process, the operation of workover rig is unstable, therefore, the weight raising the screw thread between pipe nipple and end flange and the carrying of the screw thread between rising pipe nipple and casing coupling is all unstable, and the weight of equipment with pressure is generally bigger, when the weight that screw thread bears is undergone mutation, it is easy to damage screw thread.
Utility model content
In order to solve the problem that screw thread is easily damaged, this utility model provides a kind of screw thread protection device.Described technical scheme is as follows:
A kind of screw thread protection device; protection for the screw thread raising pipe nipple of wellhead assembly; described rising pipe nipple respectively with the casing coupling screwed connection of the end flange of wellhead assembly and sleeve pipe; one end that described casing coupling is not connected with described rising pipe nipple is provided with sleeve pipe blind plate; described screw thread protection device includes: two assemblies, fixture and load-bearing regulating part
Each assembly in said two assembly includes: semi-cylindrical sleeve and semicircle ring flange, described semi-cylindrical sleeve is fixing with described semicircle ring flange to be connected, and the short transverse of described semi-cylindrical sleeve is parallel with the short transverse of described semicircle ring flange, the radius of described semicircle ring flange more than the radius of described semi-cylindrical sleeve, described semicircle ring flange is provided with along the through curved surface recess of the short transverse of described semicircle ring flange;
Said two assembly includes the first assembly and the second assembly, when described screw thread protects device to use, described first assembly buckles in the side of described rising pipe nipple by the curved surface recess of the semi-cylindrical sleeve of described first assembly and the semicircle ring flange of described first assembly, described second assembly buckles in the side of described rising pipe nipple by the curved surface recess of the semi-cylindrical sleeve of described second assembly and the semicircle ring flange of described second assembly, described fixture connects fixing to described first assembly and described second assembly, the semi-cylindrical sleeve of the semi-cylindrical sleeve of described first assembly and described second assembly forms cylindrical sleeve, the semicircle flange dish of the semicircle ring flange of described first assembly and described second assembly forms cylindric ring flange, one end that described cylindrical sleeve is not connected with described cylindric ring flange is connected on flange of the described end, described load-bearing regulating part is arranged on described cylindric ring flange and is connected on described sleeve pipe blind plate.
Further, described fixture includes: hinge and fixed structure, it is both provided with described hinge on the semi-cylindrical sleeve of described first assembly and on the semi-cylindrical sleeve of described second assembly, when the semi-cylindrical sleeve of described first assembly forms cylindrical sleeve with the semi-cylindrical sleeve of described second assembly, hinge on the semi-cylindrical sleeve of described first assembly contacts with the hinge on the semi-cylindrical sleeve of described second assembly, described fixed structure connects fixing for the hinge on the semi-cylindrical sleeve of the hinge on the semi-cylindrical sleeve of described first assembly and described second assembly, the semi-cylindrical sleeve of described first assembly and the fixing connection of the semi-cylindrical sleeve of described second assembly, described first assembly and the fixing connection of described second assembly.
Further, described load-bearing regulating part includes: N number of load-bearing adjusting bolt, and described N is the integer more than or equal to 2;
Described cylindric ring flange is provided with N number of adjustment screw along the short transverse of described cylindric ring flange, the corresponding described load-bearing adjusting bolt of each described adjustment screw,
N number of described adjustment screw is evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of described first circumference and described cylindric ring flange;
When described screw thread protects device to use, arbitrary load-bearing adjusting bolt is connected on described sleeve pipe blind plate through the adjustment screw corresponding with described arbitrary load-bearing adjusting bolt.
Further, described load-bearing regulating part includes: N number of load-bearing adjusting bolt, and described N is the even number more than or equal to 2;
Described cylindric ring flange is provided with N number of adjustment screw along the short transverse of described cylindric ring flange, the corresponding described load-bearing adjusting bolt of each described adjustment screw, and the number regulating screw on the semicircle ring flange of described first assembly is equal with the number regulating screw on the semicircle ring flange of described second assembly;
N number of described adjustment screw is evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of described first circumference and described cylindric ring flange;
When described screw thread protects device to use, arbitrary load-bearing adjusting bolt is arranged on described cylindric ring flange through the adjustment screw corresponding with described arbitrary load-bearing adjusting bolt and is connected on described sleeve pipe blind plate.
Further, described fixed structure is screw, being provided with screw on described hinge, described screw sequentially passes through the first screw and the second screw and is connected fixing to the hinge on the semi-cylindrical sleeve of described first assembly and the hinge on the semi-cylindrical sleeve of described second assembly;
Wherein, described first screw is the screw on the hinge on the semi-cylindrical sleeve of described first assembly, and described second screw is the screw on the hinge on the semi-cylindrical sleeve of described second assembly.
Further, described semi-cylindrical sleeve is fixedly connected to form integrative-structure with described semicircle ring flange by the mode welded.
Further, when the semicircle ring flange of described first assembly forms cylindric ring flange with the semicircle flange dish of described second assembly, the curved surface recess of the semicircle ring flange of the curved surface recess of the semicircle ring flange of described first assembly and described second assembly forms the longitudinal axis of manhole, the axis of described manhole and described cylindric ring flange and the longitudinal axis conllinear of described cylindrical sleeve.
Further, the aperture of described manhole is equal with the internal diameter of described cylindrical sleeve.
The technical scheme that this utility model provides has the benefit that
The screw thread protection device that this utility model provides includes: two assemblies, fixture and load-bearing regulating part, each assembly includes: semi-cylindrical sleeve and semicircle ring flange, semi-cylindrical sleeve is fixing with semicircle ring flange to be connected, and semicircle ring flange is provided with curved surface recess, two assemblies include the first assembly and the second assembly, during use, the first assembly and the second assembly all buckle and are raising on pipe nipple, fixture connects fixing to the first assembly and the second assembly, the semi-cylindrical sleeve of the first assembly and the semi-cylindrical sleeve of the second assembly form cylindrical sleeve, the semicircle ring flange of the first assembly and the semicircle flange dish of the second assembly form cylindric ring flange, one end that cylindrical sleeve is not connected with cylindric ring flange is connected on end flange, load-bearing regulating part is arranged on cylindric ring flange and is connected on sleeve pipe blind plate. it is connected on end flange due to cylindrical sleeve and load-bearing regulating part is connected on sleeve pipe blind plate, can the weight that the screw thread between the screw thread that raise between pipe nipple and casing coupling and rising pipe nipple and end flange bears be distributed on sleeve pipe blind plate by cylindrical sleeve and load-bearing regulating part, reduce the screw thread raised between pipe nipple and casing coupling and raise the weight that the screw thread between pipe nipple and end flange bears, therefore, the screw thread raising pipe nipple can be protected, solve the problem that screw thread is easily damaged, reach the effect avoiding screw thread to damage.
It should be appreciated that above general description and details hereinafter describe and be merely illustrative of, this utility model can not be limited.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the front view of a kind of screw thread protection device that one embodiment of this utility model provides;
Fig. 2 is the top view of a kind of screw thread protection device that one embodiment of this utility model provides;
Fig. 3 is the structural representation of a kind of first assembly that one embodiment of this utility model provides;
Fig. 4 is the application scenarios figure of a kind of screw thread protection device that one embodiment of this utility model provides.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meets embodiment of the present utility model, and is used for explaining principle of the present utility model together with description.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model is described in further detail, obviously, described embodiment is only this utility model some embodiments, rather than whole embodiments. Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, it illustrates the front view of the screw thread protection device 00 that one embodiment of this utility model provides, for the screw thread raising pipe nipple of wellhead assembly is protected, raise pipe nipple respectively with the casing coupling screwed connection of the end flange of wellhead assembly and sleeve pipe, one end that casing coupling is not connected with rising pipe nipple is provided with sleeve pipe blind plate, this screw thread protection device 00 can be arranged on the side raising pipe nipple of sleeve pipe and (that is to say the screwed connection raised between pipe nipple and end flange to screw thread, and to the screwed connection raised between pipe nipple and casing coupling) protect.
Referring to Fig. 1, screw thread protection device 00 includes: two assemblies 001, fixture 002 and load-bearing regulating part 003. Each assembly in two assemblies 001 includes: semi-cylindrical sleeve and semicircle ring flange, semi-cylindrical sleeve is fixing with semicircle ring flange to be connected, and the short transverse of semi-cylindrical sleeve is parallel with the short transverse of semicircle ring flange, the radius of semicircle ring flange more than the radius of semi-cylindrical sleeve, semicircle ring flange is provided with along the through curved surface recess (being not drawn in Fig. 1) of the short transverse of semicircle ring flange.
As shown in Figure 1, two assemblies 001 include the first assembly 0011 and the second assembly 0012, when screw thread protects device 00 to use, first assembly 0011 buckles in the side raising pipe nipple (being not drawn in Fig. 1) by the curved surface recess of the semi-cylindrical sleeve A1 of the first assembly 0011 and the semicircle ring flange B1 of the first assembly 0011, second assembly 0012 buckles in the side raising pipe nipple by the curved surface recess of the semi-cylindrical sleeve A2 of the second assembly 0012 and the semicircle ring flange B2 of the second assembly 0012, fixture 002 is by the first assembly 0011 and the second fixing connection of assembly 0012, the semi-cylindrical sleeve A1 of the first assembly 0011 and semi-cylindrical sleeve A2 of the second assembly 0012 forms cylindrical sleeve A, the semicircle ring flange B1 of the first assembly 0011 and semicircle ring flange B2 of the second assembly 0012 forms cylindric ring flange B, cylindrical sleeve A is not connected on end flange (being not drawn in Fig. 1) with cylindric ring flange B one end being connected, load-bearing regulating part 003 is arranged on cylindric ring flange B and is connected on sleeve pipe blind plate (being not drawn in Fig. 1).
In sum, the screw thread protection device that this utility model embodiment provides, it is connected on end flange due to cylindrical sleeve and load-bearing regulating part is connected on sleeve pipe blind plate, can the weight that the screw thread between the screw thread that raise between pipe nipple and casing coupling and rising pipe nipple and end flange bears be distributed on sleeve pipe blind plate by cylindrical sleeve and load-bearing regulating part, reduce the screw thread raised between pipe nipple and casing coupling and raise the weight that the screw thread between pipe nipple and end flange bears, therefore, the screw thread raising pipe nipple can be protected, solve the problem that screw thread is easily damaged, reach the effect avoiding screw thread to damage.
Further, in this utility model embodiment, semi-cylindrical sleeve is fixedly connected to form integrative-structure with semicircle ring flange by the mode welded. Illustratively, as shown in Figure 1, semi-cylindrical sleeve A1 and semicircle ring flange B1 is fixedly connected to form integrative-structure by the mode welded, and semi-cylindrical sleeve A2 and semicircle ring flange B2 is fixedly connected to form integrative-structure by the mode welded, and this is not limited by this utility model embodiment.
Further, please continue to refer to Fig. 1, fixture 002 includes: hinge 0021 and fixed structure 0022. it is both provided with hinge 0021 on the semi-cylindrical sleeve A1 of the first assembly 0011 and on the semi-cylindrical sleeve A2 of the second assembly 0012, when the semi-cylindrical sleeve A1 of the first assembly 0011 and semi-cylindrical sleeve A2 of the second assembly 0012 forms cylindrical sleeve A, hinge 0021 on the semi-cylindrical sleeve A1 of the first assembly 0011 contacts with the hinge 0021 on the semi-cylindrical sleeve A2 of the second assembly 0012, fixed structure 0022 connects fixing for the hinge 0021 on the semi-cylindrical sleeve A2 of the hinge 0021 on the semi-cylindrical sleeve A1 of the first assembly 0011 and the second assembly 0012, the semi-cylindrical sleeve A1 of the first assembly 0011 and semi-cylindrical sleeve A2 of the second assembly 0012 is fixing to be connected, first assembly 0011 and the second fixing connection of assembly 0012. illustratively, in this utility model embodiment, fixed structure 0022 can be screw, hinge 0021 is provided with screw (being not drawn in Fig. 1), screw sequentially passes through the first screw and the second screw and is connected fixing with the hinge 0021 on the semi-cylindrical sleeve A2 of the second assembly 0012 for the hinge 0021 on the semi-cylindrical sleeve A1 of the first assembly 0011, make the semi-cylindrical sleeve A1 of the first assembly 0011 and the fixing connection of semi-cylindrical sleeve A2 of the second assembly 0012, the first assembly 0011 and the second fixing connection of assembly 0012. wherein, the first screw is the screw on the hinge 0022 on the semi-cylindrical sleeve A1 of the first assembly 0011, and the second screw is the screw on the hinge 0022 on the semi-cylindrical sleeve A2 of the second assembly 0012, and this is not limited by this utility model embodiment.
Further, as it is shown in figure 1, load-bearing regulating part 003 includes: N number of load-bearing adjusting bolt 0031, N is the integer more than or equal to 2; Cylindric ring flange B is provided with N number of adjustment screw (being not drawn in Fig. 1) along the short transverse h of cylindric ring flange B, the corresponding load-bearing adjusting bolt 0031 of each adjustment screw, N number of adjustment screw is evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of this first circumference and cylindric ring flange B; When screw thread protects device 00 to use, arbitrary load-bearing adjusting bolt 0031 is connected on sleeve pipe blind plate through the adjustment screw corresponding with arbitrary load-bearing adjusting bolt 0031.
It should be noted that in this utility model embodiment, the concrete numerical value of N can be configured according to actual needs, and this is not limited by this utility model embodiment. alternatively, N is the even number more than or equal to 2, cylindric ring flange B is provided with N number of adjustment screw along the short transverse h of cylindric ring flange B, the corresponding load-bearing adjusting bolt 0031 of each adjustment screw, and first assembly 0011 semicircle ring flange B1 on regulate screw number with on the semicircle ring flange B2 of the second assembly 0012 adjustment screw number equal, illustratively, in this utility model embodiment, N is equal to 8, therefore, the number regulating screw on the semicircle ring flange B1 of the first assembly 0011 is 4, the number regulating screw on the semicircle ring flange B2 of the second assembly 0012 is 4, this is not limited by this utility model embodiment.
Alternatively, in this utility model embodiment, when the semicircle ring flange B1 of the first assembly 0011 and semicircle ring flange B2 of the second assembly 0012 forms cylindric ring flange B, the curved surface recess of the curved surface recess of the semicircle ring flange B1 of the first assembly 0011 and the semicircle ring flange B2 of the second assembly 0012 forms manhole, the aperture of this manhole can be equal with the internal diameter of cylindrical sleeve A, the longitudinal axis of the axis of this manhole and cylindric ring flange B and the longitudinal axis conllinear of cylindrical sleeve A, illustratively, as shown in Figure 1, the longitudinal axis of the axis of this manhole and cylindric ring flange B and the longitudinal axis y conllinear of cylindrical sleeve A.
Further, refer to Fig. 2, it illustrates the top view of the screw thread protection device 00 that one embodiment of this utility model provides, referring to Fig. 2, screw thread protection device 00 includes: two assemblies, fixture 002 and load-bearing regulating part 003. Each assembly includes: semi-cylindrical sleeve and semicircle ring flange, semi-cylindrical sleeve is fixing with semicircle ring flange to be connected, and the radius R of semicircle ring flange is more than the radius r of semi-cylindrical sleeve, semicircle ring flange is provided with along the through curved surface recess (not marking in Fig. 2) of the short transverse of semicircle ring flange.
As shown in Figure 2, when screw thread protects device 00 to use, fixture 002 connects fixing to the first assembly and the second assembly, the semi-cylindrical sleeve A1 of the first assembly and the semi-cylindrical sleeve A2 of the second assembly forms cylindrical sleeve A, the semicircle ring flange B1 of the first assembly and the semicircle ring flange B2 of the second assembly forms cylindric ring flange B, the curved surface recess of the curved surface recess of the semicircle ring flange B1 of the first assembly and the semicircle ring flange B2 of the second assembly forms manhole a, the aperture of this manhole a can be equal with the internal diameter of cylindrical sleeve A, and longitudinal axis (being not drawn in Fig. 2) conllinear of the longitudinal axis (being not drawn in Fig. 2) of the axis (being not drawn in Fig. 2) of this manhole a and cylindric ring flange B and cylindrical sleeve A. illustratively, as in figure 2 it is shown, fixture 002 includes: hinge 0021 and fixed structure 0022. it is both provided with hinge 0021 on the semi-cylindrical sleeve A1 of the first assembly and on the semi-cylindrical sleeve A2 of the second assembly, when semi-cylindrical sleeve A1 and semi-cylindrical sleeve A2 forms cylindrical sleeve A, hinge 0021 on semi-cylindrical sleeve A1 contacts with the hinge 0021 on semi-cylindrical sleeve A2, fixed structure 0022 connects fixing for the hinge 0021 on the hinge 0021 on semi-cylindrical sleeve A1 and semi-cylindrical sleeve A2, semi-cylindrical sleeve A1 and semi-cylindrical sleeve A2 is fixing to be connected, and the first assembly and the second assembly are fixed and connected.Illustratively, in this utility model embodiment, fixed structure 0022 can be screw, hinge 0021 is provided with screw (being not drawn in Fig. 2), screw sequentially passes through the first screw and the second screw and is connected fixing with the hinge 0021 on semi-cylindrical sleeve A2 for the hinge 0021 on semi-cylindrical sleeve A1 so that semi-cylindrical sleeve A1 and semi-cylindrical sleeve A2 is fixing to be connected. Wherein, the first screw is the screw on the hinge 0022 on semi-cylindrical sleeve A1, and the second screw is the screw on the hinge 0022 on semi-cylindrical sleeve A2.
Further, as shown in Figure 2, load-bearing regulating part 003 includes: 8 load-bearing adjusting bolts 0031, cylindric ring flange B is provided with 8 along the short transverse of cylindric ring flange B and regulates screw (being not drawn in Fig. 2), the corresponding load-bearing adjusting bolt 0031 of each adjustment screw, 8 regulate screw and are evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of this first circumference and cylindric ring flange B, when screw thread protects device 00 to use, arbitrary load-bearing adjusting bolt 0031 is connected on sleeve pipe blind plate through the adjustment screw corresponding with arbitrary load-bearing adjusting bolt 0031. as in figure 2 it is shown, distribution has 4 load-bearing adjusting bolts 0031 on semicircle ring flange B1, on semicircle ring flange B2, distribution has 4 load-bearing adjusting bolts 0031.
Further, refer to Fig. 3, it illustrates the structural representation of the first assembly 0011 that one embodiment of this utility model provides, referring to Fig. 3, first assembly 0011 includes: semi-cylindrical sleeve A1 and semicircle ring flange B1, semi-cylindrical sleeve A1 and semicircle ring flange B1 is fixing to be connected, semicircle ring flange B1 is provided with along the through curved surface recess a1 of the short transverse of semicircle ring flange, semicircle ring flange B1 is provided with hinge 0021 and load-bearing regulating part 003, load-bearing regulating part 003 includes 4 load-bearing adjusting bolts 0031, when screw thread protects device 00 to use, the semi-cylindrical sleeve of this semi-cylindrical sleeve A1 and the second assembly forms cylindrical sleeve, the semicircle flange dish of this semicircle ring flange B1 and the second assembly forms cylindric ring flange, the curved surface recess of the curved surface recess a1 of semicircle ring flange B1 and the semicircle ring flange of the second assembly forms manhole.
In correlation technique, in oil well Operating Pressure is constructed, the weight of equipment with pressure is generally up to 12000 kilograms, after installation, equipment total weight with pressure is all carried by the big four of wellhead assembly, and the equipment such as the oil pipe in well is also suspended from the big four of wellhead assembly, the weight of the big four carrying of wellhead assembly is approximately 40000 kilograms, and big four is by the end flange of its underpart and rising pipe nipple screwed connection, the weight of big four carrying is delivered to rising pipe nipple by end flange, on sleeve pipe below casing coupling and casing coupling, the screw thread protection device that this utility model embodiment provides, cylindrical sleeve and load-bearing regulating part is adopted to be distributed on sleeve pipe blind plate by the weight that the screw thread between the screw thread raised between pipe nipple and casing coupling and rising pipe nipple and end flange bears, the screw thread raised between pipe nipple and casing coupling can be alleviated and raise the weight that the screw thread between pipe nipple and end flange bears, the screw thread between the screw thread raising between pipe nipple and casing coupling and rising pipe nipple and end flange is avoided to bear big load impact.
After the weight that screw thread between the screw thread raised between pipe nipple and casing coupling and rising pipe nipple and end flange bears is distributed on sleeve pipe blind plate; can reduce and raise the impulsive force that pipe nipple and casing coupling bear; thus being effectively protected end flange and raising pipe nipple and raise the screw thread of pipe nipple and casing coupling, it is to avoid because being impacted media leaks in the well that the screw thread infringement caused causes by huge weight and alternate load.
In sum, the screw thread protection device that this utility model embodiment provides, it is connected on end flange due to cylindrical sleeve and load-bearing regulating part is connected on sleeve pipe blind plate, can the weight that the screw thread between the screw thread that raise between pipe nipple and casing coupling and rising pipe nipple and end flange bears be distributed on sleeve pipe blind plate by cylindrical sleeve and load-bearing regulating part, reduce the screw thread raised between pipe nipple and casing coupling and raise the weight that the screw thread between pipe nipple and end flange bears, therefore, the screw thread raising pipe nipple can be protected, solve the problem that screw thread is easily damaged, reach the effect avoiding screw thread to damage.
The screw thread protection device that this utility model embodiment provides, two assemblies are fixed by hinge and screw, install and unloading process is simple, convenient.
Refer to Fig. 4, it illustrates the application scenarios figure of the screw thread protection device 00 that one embodiment of this utility model provides. referring to Fig. 4, this application scenarios figure includes: screw thread protection device 00, big four 01, sleeve pipe 02, sleeve pipe blind plate 03, oil pipe 04 and rising pipe nipple 05, oil pipe 04 is arranged in sleeve pipe 02, and it is suspended on big four 01 by tubing hanger 041, wherein, sleeve pipe 02 includes casing coupling 021, the bottom of big four 01 is provided with end flange 011, raise pipe nipple 05 respectively with end flange 011 and casing coupling 021 screwed connection, sleeve pipe blind plate 03 is arranged on the lower section of casing coupling 021, and fixing with casing coupling 021 be connected, big four 01, sleeve pipe blind plate 03, oil pipe 04 and rising pipe nipple 05 connect formation entirety, should entirely through the screwed connection top at sleeve pipe 02,
When oil well Operating Pressure is constructed, the curved surface recess that screw thread is protected the semicircle ring flange of the first assembly of device 00 semi-cylindrical sleeve by the first assembly and the first assembly buckles and is raising on pipe nipple 05, one end that the semi-cylindrical sleeve of the first assembly is not connected with the semicircle ring flange of the first assembly is made to be connected on the lower surface of end flange 011, the curved surface recess that screw thread is protected the semicircle ring flange of the second assembly of device 00 semi-cylindrical sleeve by the second assembly and the second assembly buckles and is raising on pipe nipple 05, one end that the semi-cylindrical sleeve of the second assembly is not connected with the semicircle ring flange of the second assembly is made to be connected on the lower surface of end flange 011, now, the semi-cylindrical sleeve of the first assembly and the semi-cylindrical sleeve of the second assembly form cylindrical sleeve, the semicircle ring flange of the first assembly and the semicircle flange dish of the second assembly form cylindric ring flange, screw is sequentially passed through the first screw and the second screw, hinge on the semi-cylindrical sleeve of the first assembly and the fixing connection of the hinge on the semi-cylindrical sleeve of the second assembly, make the semi-cylindrical sleeve of the first assembly and the fixing connection of semi-cylindrical sleeve of the second assembly, first assembly and the fixing connection of the second assembly, regulate the load-bearing adjusting bolt of screw thread protection device 00, load-bearing adjusting bolt is connected on sleeve pipe blind plate 03. when load-bearing adjusting bolt is connected on sleeve pipe blind plate 03, the weight that the screw thread between screw thread and rising pipe nipple 05 and end flange 011 between rising pipe nipple 05 and casing coupling 021 bears is distributed on sleeve pipe blind plate 03, reduce the screw thread raised between pipe nipple 05 and casing coupling 021 and raise the weight that the screw thread between pipe nipple 05 and end flange 011 bears, it is to avoid the screw thread raising pipe nipple 05 damages.
In sum, the screw thread protection device that this utility model embodiment provides, it is connected on end flange due to cylindrical sleeve and load-bearing regulating part is connected on sleeve pipe blind plate, can the weight that the screw thread between the screw thread that raise between pipe nipple and casing coupling and rising pipe nipple and end flange bears be distributed on sleeve pipe blind plate by cylindrical sleeve and load-bearing regulating part, reduce the screw thread raised between pipe nipple and casing coupling and raise the weight that the screw thread between pipe nipple and end flange bears, therefore, solve the problem that screw thread is easily damaged, reach the effect avoiding screw thread to damage.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (8)
1. a screw thread protection device; it is characterized in that; protection for the screw thread raising pipe nipple of wellhead assembly; described rising pipe nipple respectively with the casing coupling screwed connection of the end flange of wellhead assembly and sleeve pipe; one end that described casing coupling is not connected with described rising pipe nipple is provided with sleeve pipe blind plate; described screw thread protection device includes: two assemblies, fixture and load-bearing regulating part
Each assembly in said two assembly includes: semi-cylindrical sleeve and semicircle ring flange, described semi-cylindrical sleeve is fixing with described semicircle ring flange to be connected, and the short transverse of described semi-cylindrical sleeve is parallel with the short transverse of described semicircle ring flange, the radius of described semicircle ring flange more than the radius of described semi-cylindrical sleeve, described semicircle ring flange is provided with along the through curved surface recess of the short transverse of described semicircle ring flange;
Said two assembly includes the first assembly and the second assembly, when described screw thread protects device to use, described first assembly buckles in the side of described rising pipe nipple by the curved surface recess of the semi-cylindrical sleeve of described first assembly and the semicircle ring flange of described first assembly, described second assembly buckles in the side of described rising pipe nipple by the curved surface recess of the semi-cylindrical sleeve of described second assembly and the semicircle ring flange of described second assembly, described fixture connects fixing to described first assembly and described second assembly, the semi-cylindrical sleeve of the semi-cylindrical sleeve of described first assembly and described second assembly forms cylindrical sleeve, the semicircle flange dish of the semicircle ring flange of described first assembly and described second assembly forms cylindric ring flange, one end that described cylindrical sleeve is not connected with described cylindric ring flange is connected on flange of the described end, described load-bearing regulating part is arranged on described cylindric ring flange and is connected on described sleeve pipe blind plate.
2. screw thread according to claim 1 protection device, it is characterised in that described fixture includes: hinge and fixed structure,
It is both provided with described hinge on the semi-cylindrical sleeve of described first assembly and on the semi-cylindrical sleeve of described second assembly, when the semi-cylindrical sleeve of described first assembly forms cylindrical sleeve with the semi-cylindrical sleeve of described second assembly, hinge on the semi-cylindrical sleeve of described first assembly contacts with the hinge on the semi-cylindrical sleeve of described second assembly, described fixed structure connects fixing for the hinge on the semi-cylindrical sleeve of the hinge on the semi-cylindrical sleeve of described first assembly and described second assembly, the semi-cylindrical sleeve of described first assembly and the fixing connection of the semi-cylindrical sleeve of described second assembly, described first assembly and the fixing connection of described second assembly.
3. screw thread according to claim 1 protection device, it is characterised in that
Described load-bearing regulating part includes: N number of load-bearing adjusting bolt, and described N is the integer more than or equal to 2;
Described cylindric ring flange is provided with N number of adjustment screw along the short transverse of described cylindric ring flange, the corresponding described load-bearing adjusting bolt of each described adjustment screw,
N number of described adjustment screw is evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of described first circumference and described cylindric ring flange;
When described screw thread protects device to use, arbitrary load-bearing adjusting bolt is connected on described sleeve pipe blind plate through the adjustment screw corresponding with described arbitrary load-bearing adjusting bolt.
4. screw thread according to claim 1 protection device, it is characterised in that
Described load-bearing regulating part includes: N number of load-bearing adjusting bolt, and described N is the even number more than or equal to 2;
Described cylindric ring flange is provided with N number of adjustment screw along the short transverse of described cylindric ring flange, the corresponding described load-bearing adjusting bolt of each described adjustment screw, and the number regulating screw on the semicircle ring flange of described first assembly is equal with the number regulating screw on the semicircle ring flange of described second assembly;
N number of described adjustment screw is evenly spaced on the first circumference, the concyclic heart in arbitrary bottom surface of described first circumference and described cylindric ring flange;
When described screw thread protects device to use, arbitrary load-bearing adjusting bolt is arranged on described cylindric ring flange through the adjustment screw corresponding with described arbitrary load-bearing adjusting bolt and is connected on described sleeve pipe blind plate.
5. screw thread according to claim 2 protection device, it is characterised in that
Described fixed structure is screw, being provided with screw on described hinge, described screw sequentially passes through the first screw and the second screw and is connected fixing to the hinge on the semi-cylindrical sleeve of described first assembly and the hinge on the semi-cylindrical sleeve of described second assembly;
Wherein, described first screw is the screw on the hinge on the semi-cylindrical sleeve of described first assembly, and described second screw is the screw on the hinge on the semi-cylindrical sleeve of described second assembly.
6. according to the arbitrary described screw thread protection device of claim 1 to 5, it is characterised in that described semi-cylindrical sleeve is fixedly connected to form integrative-structure with described semicircle ring flange by the mode welded.
7. according to the arbitrary described screw thread protection device of claim 1 to 5, it is characterised in that
When the semicircle ring flange of described first assembly forms cylindric ring flange with the semicircle flange dish of described second assembly, the curved surface recess of the semicircle ring flange of the curved surface recess of the semicircle ring flange of described first assembly and described second assembly forms the longitudinal axis of manhole, the axis of described manhole and described cylindric ring flange and the longitudinal axis conllinear of described cylindrical sleeve.
8. screw thread according to claim 7 protection device, it is characterised in that
The aperture of described manhole is equal with the internal diameter of described cylindrical sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106606.XU CN205297375U (en) | 2015-12-26 | 2015-12-26 | Screw thread protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106606.XU CN205297375U (en) | 2015-12-26 | 2015-12-26 | Screw thread protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297375U true CN205297375U (en) | 2016-06-08 |
Family
ID=56474049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521106606.XU Active CN205297375U (en) | 2015-12-26 | 2015-12-26 | Screw thread protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297375U (en) |
-
2015
- 2015-12-26 CN CN201521106606.XU patent/CN205297375U/en active Active
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