CN210307635U - Tool for disassembling and assembling nut - Google Patents
Tool for disassembling and assembling nut Download PDFInfo
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- CN210307635U CN210307635U CN201920944424.1U CN201920944424U CN210307635U CN 210307635 U CN210307635 U CN 210307635U CN 201920944424 U CN201920944424 U CN 201920944424U CN 210307635 U CN210307635 U CN 210307635U
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Abstract
The utility model relates to an oil recovery machine tool technical field, concretely relates to nut is instrument for dismouting. The tool comprises a middle heightening section, an upper plug bush and a lower plug bush, wherein the upper plug bush is positioned at the upper end of the middle heightening section and is provided with an upper jack; the lower plug bush is positioned at the lower end of the middle heightening section and is provided with a lower plug jack; the upper plug bush and/or the lower plug bush are/is provided with radial through holes for inserting stop rods, and the stop rods are matched with the central pipe in a stop mode so as to prevent the corresponding plug bushes from rotating when the nuts are assembled and disassembled. When the nut of the large four-way joint of the wellhead is disassembled, the upper jack is inserted into the lower nut of the upper flange, the lower jack is inserted into the upper nut of the lower flange, the stop rod penetrates through the corresponding plug bush with the radial through hole, and the stop rod is matched with the stop of the central tube to realize the rotation stopping assembly of the jack of the plug bush at the end and the corresponding nut.
Description
Technical Field
The utility model relates to an oil recovery machine tool technical field, concretely relates to nut is instrument for dismouting.
Background
The production tree is a wellhead device for extracting petroleum, such as a self-blowing well, a mechanical extraction well and the like, and is mainly used for hanging an oil pipe and a downhole tool and controlling and adjusting the production of an oil well. The production tree includes the big cross of well head, it is concrete, as shown in fig. 1, the big cross 1 of well head realizes being connected with production tree process line through upper flange 2 and lower flange 3, all be provided with 8 or 12 bolts 5 of interval arrangement in the week of upper flange 2 and lower flange 3, the both ends of bolt 5 are equipped with upper nut 4 and lower nut 6, in order to carry out the fixed of corresponding flange, when the well head maintenance, the dismantlement of the big cross 1 of well head usually needs two people to accomplish, one person uses pipe tongs or spanner to fix one in the upper and lower nut of a bolt on the corresponding flange promptly, another person uses pipe tongs to dismantle another nut on this bolt, carry out in proper order to dismantle the whole nuts of the bolt that sets up in the flange week in proper order, reverse when carrying out the installation of the big cross of well head.
However, the above-mentioned disassembling and assembling process has some problems: along with the long-term use of production tree and the greasy dirt of well head for obvious corrosion phenomenon appears with the bolt in nut on the corresponding flange, and nut and bolt adhesion are serious, are difficult for taking off, and the bolt quantity of equipartition is more on the flange, and the space that can supply the breakout tongs operation is less, all more troublesome when dismantling and installing the nut, and in addition, the dismouting process of nut needs two operating personnel cooperations, and work load is big, wastes time and energy, and work efficiency is also lower.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an instrument is used in nut dismouting for solve among the prior art nut inconvenient, the technical problem that wastes time and energy of operation when the dismouting.
In order to achieve the above object, the utility model discloses instrument for nut dismouting adopts following technical scheme:
a nut attaching and detaching tool includes:
a middle height-adjusting section;
the upper plug bush is positioned at the upper end of the middle heightening section and is provided with an upper plug hole for the rotation stopping plug-in mounting with a lower nut of the upper flange;
the lower plug bush is positioned at the lower end of the middle heightening section and is provided with a lower plug hole for the rotation stopping plug-in mounting with an upper nut of the lower flange;
the upper plug bush and/or the lower plug bush are/is provided with radial through holes, the radial through holes are used for being penetrated with stop rods, and the stop rods are used for being matched with the central pipe in a stop mode so as to prevent the corresponding plug bushes from rotating when the nuts are assembled and disassembled.
The beneficial effects of the above technical scheme are: when the nut of the large four-way joint at the wellhead is disassembled, the height of the middle heightening section is adjusted to enable the upper jack to be inserted into the lower nut of the upper flange, the lower jack to be inserted into the upper nut of the lower flange, the stop lever penetrates through the corresponding inserting sleeve with the radial through hole, the stop lever is matched with the stop of the central tube to realize the rotation stopping assembly of the jack of the inserting sleeve at the end and the corresponding nut, and at the moment, a pipe wrench can be used for disassembling the nut at the other end of the bolt where the corresponding nut is located; the reverse operation is sufficient when the nut is installed. Because this device has realized the restraint to one end nut on the corresponding flange, only need alone to use the breakout tongs can realize the dismouting of another end nut on the flange for the operation of nut dismouting is more convenient, labour saving and time saving, and work efficiency is higher.
Furthermore, the lower end of the upper plug bush is in threaded connection with the upper end of the lower plug bush, and the threaded connection section of the upper plug bush and the threaded connection section of the lower plug bush form the middle height-adjusting section. The threaded connection has the advantages of simple structure and convenient arrangement; and the middle height-adjusting section is formed by the threaded connection sections of the two, so that the structure of the whole device is simpler.
Furthermore, radial slots are formed in the upper insertion hole and the lower insertion hole, and nuts can radially enter the corresponding insertion holes through the radial slots, so that the whole device is placed between the upper flange and the lower flange along the horizontal direction, and rotation stopping insertion of the upper insertion sleeve and the lower insertion sleeve to the nuts at the corresponding ends is completed. The radial grooving enables the whole device to be placed between the upper flange and the lower flange along the horizontal direction, and the use is more convenient.
Furthermore, the upper plug bush and the lower plug bush are provided with the radial through holes. After the nut on the flange at one end of the dismounting device is dismounted, the stop lever is only required to be pulled out from the radial through hole corresponding to the plug bush at the end, and the stop lever is penetrated into the radial through hole of the other plug bush, so that the dismounting of the nut on the flange at the corresponding end can be operated, the device does not need to be used in reverse, and the whole dismounting process is more convenient.
Further, the cross sections of the upper insertion hole and the lower insertion hole are in a hexagonal shape or a quincunx shape. Make whole device can be applicable to the dismouting of relying on nut on the flange of different shapes nut assembly, improved the suitability of device.
Drawings
FIG. 1 is a schematic diagram of a well head large cross-joint connected to a central pipeline in the prior art;
FIG. 2 is a schematic structural view of the nut dismounting tool of the present invention;
FIG. 3 is a schematic view of the nut assembling and disassembling tool of the present invention assembled with the nuts on the upper and lower flanges of the Christmas tree;
fig. 4 is a plan view of a first embodiment of the nut mounting and dismounting tool of the present invention;
fig. 5 is a plan view of a second embodiment of the nut mounting and dismounting tool of the present invention;
description of reference numerals: 1-big four-way of well head, 2-upper flange, 3-lower flange, 4-upper nut, 5-bolt, 6-lower nut, 7-upper plug bush, 8-upper jack, 9-lower plug bush, 10-lower jack, 11-radial perforation, 12-stop lever.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings:
the utility model discloses nut is concrete embodiment one of instrument for dismouting:
as shown in fig. 2 and 3, the nut mounting and dismounting tool comprises an upper plug bush 7, the upper plug bush 7 is provided with an upper insertion hole 8 for the rotation-stop insertion of a lower nut 6 of an upper flange 2, and also comprises a lower plug bush 9, the lower plug bush 9 is provided with a lower insertion hole 10 for the rotation-stop insertion of an upper nut 4 of a lower flange 3, an intermediate heightening section is arranged between the upper plug bush 7 and the lower plug bush 9, the upper jack 8 and the lower nut 6 of the upper flange 2 can be inserted by adjusting the height of the middle heightening section, in addition, the upper plug bush 7 and the lower plug bush 9 are both provided with radial through holes 11, the radial through holes 11 are used for being penetrated with stop rods 12 when in use, the stop rods 12 can be used for being matched with the central pipe stop of the wellhead big four-way 1 to avoid the rotation of the corresponding plug bushes when the nuts are assembled and disassembled, this is equivalent to providing restraint for both the lower nut 6 of the upper flange 2 and the upper nut 4 of the lower flange 3, which facilitates the use of pipe tongs to disassemble and assemble the upper nut 4 of the upper flange 2 and the lower nut 6 of the lower flange 3.
As shown in fig. 2 and 3, the lower end of the upper sleeve 7 is threadedly coupled to the upper end of the lower sleeve 9, and specifically, the lower end of the upper sleeve 7 has an external threaded section, the upper end of the lower sleeve 9 is provided with a threaded hole, and the upper sleeve 7 and the lower sleeve 9 are threadedly coupled through the external threaded section and the threaded hole, and the threaded coupling sections thereof form a middle height-adjustable section, so that the structure of the entire device is simpler. When carrying out the dismouting nut, can be through the height of adjusting the middle section of increaseing so that the height of whole device and the interval adaptation between upper flange 2 and the lower flange 3 to make whole device can be more convenient provide the restraint to the lower nut 6 of upper flange 2 and the upper nut 4 of lower flange 3, made things convenient for the dismouting that uses the upper nut 4 of breakout tongs to upper flange 2 and the lower nut 6 of lower flange 3.
In order to prevent the corresponding plug bushes from rotating when the pipe tongs are used for dismounting the nuts on the corresponding end flanges, the upper plug bush 7 and the lower plug bush 9 are respectively provided with a radial through hole 11, the radial through holes 11 are used for penetrating and installing a stop lever 12 when in use, and the stop lever 12 can be in stop fit with the central pipe of the wellhead large cross 1 so as to ensure that the corresponding plug bushes cannot rotate when the nuts are dismounted and mount, and the nuts are convenient to dismount and mount. In this embodiment, go up the plug bush and all be provided with radial perforation on the plug bush down, in other embodiments, also can only set up radial perforation on last plug bush or only set up radial perforation on plug bush down, when carrying out the nut dismouting, behind the nut dismouting on the flange with radial perforation place one end, need place whole device in reverse, then utilize radial perforation to wear to adorn the nut dismouting on the flange that the pin carries out other one end, whole dismouting process is comparatively troublesome.
As shown in fig. 2 and 3, in order to facilitate the whole device to be placed between the upper flange 2 and the lower flange 3, the upper plug bush 7 and the lower plug hole 10 are provided with radial slots, so that the whole device can be placed between the upper flange 2 and the lower flange 3 along the horizontal direction, and the whole process is more convenient. It should be noted that, the insertion between the upper insertion hole 8 and the lower nut 6 of the upper flange 2 is not that the upper insertion hole 8 completely covers the lower nut 6 of the upper flange 2, but the upper end surface of the upper insertion hole 8 passes over the lower end surface of the lower nut 6 of the upper flange 2, therefore, the middle height-adjusting section has an actual effect of finely adjusting the position of the upper insertion sleeve 7, so that the upper insertion sleeve can be inserted with the lower nuts 6 of the upper flanges 2 with different screwing degrees, and the insertion of the lower nuts 6 of the upper flanges 2 is completed more conveniently.
As shown in fig. 4, the cross section of the upper insertion hole 8 is hexagonal, that is, the upper insertion hole 8 is a hexagonal hole, a radial slot is formed at an opening on one side of the hexagonal hole, and the size of the slot satisfies the rotation stopping insertion of the insertion hole and the corresponding end nut, so that the whole device can be better adapted to the hexagonal nut, and the lower insertion hole 10 and the upper insertion hole 8 are arranged in the same manner. In the second embodiment, as shown in fig. 5, the cross section of the upper insertion hole 8 may also be in a quincunx shape, that is, the upper insertion hole 8 is a quincunx hole, one radial side of the quincunx hole is opened to form a radial slot, the size of the slot also satisfies the rotation stop assembly of the insertion hole and the corresponding end nut, and similarly, the lower insertion hole 10 and the upper insertion hole 8 are arranged in the same manner. Thus, the whole device can be better matched with the plum blossom-shaped nut.
When the tool for disassembling and assembling the nut of the utility model works, as shown in figure 4, when the nut is disassembled, firstly, according to the screwing degree of the lower nut 6 on the upper flange 2, the middle heightening section is adjusted to finely adjust the height of the whole device, so that the upper jack 8 is better aligned with the lower nut 6 of the upper flange 2, after the adjustment is finished, the whole device is placed between the upper flange 2 and the lower flange 3 along the horizontal direction through the radial slots on the upper jack 8 and the lower jack 10, the whole device immediately provides restraint for the lower nut 6 of the upper flange 2 and the upper nut 4 of the lower flange 3 at the same time, taking the upper nut 4 of the upper flange 2 as an example, penetrating the stop rod 12 into the radial perforation 11 of the upper plug bush 7, using a pipe wrench to clamp the upper nut 4 of the upper flange 2 to be taken down, because the stop rod 12 is matched with the stop of the central pipe of the big four-way 1 of the well mouth, the stable restraint of the lower nut 6 of the upper plug bush 2 is ensured, the upper nut 4 of the upper flange 2 can be conveniently taken down, and in the same way, when the lower nut 6 of the lower flange 3 is disassembled, the stop lever 12 is taken out from the radial through hole 11 of the upper plug bush 7 and then penetrates into the radial through hole 11 of the lower plug bush 9, the lower nut 6 of the lower flange 3 can be conveniently taken down, then, the whole device is taken out from the space between the upper flange 2 and the lower flange 3 along the horizontal direction, the lower nut 6 of the upper flange 2 and the upper nut 4 of the lower flange 3 are taken out, and the disassembly work of the nuts is completed.
When the installation of carrying out the nut, put into between flange 2 and the lower flange 3 with whole device, above flange 2 is the example, during inserting the radial fluting of plug bush 7 in along the horizontal direction with the nut, penetrate pin 12 in the radial perforation 11 of last plug bush 7, then, insert bolt 5 to the nut of plug bush 7 from top to bottom in the upper end of last flange 2, use the breakout tongs with the nut pack into the upper end of this bolt 5 can, in the same way, the nut installation on flange 3 down can be very convenient realization.
In the first embodiment, the lower end of the upper plug bush is in threaded connection with the upper end of the lower plug bush, specifically, the lower end of the upper plug bush is provided with an external threaded section, and the upper end of the lower plug bush is provided with a threaded hole. In other embodiments, the lower end of the upper insert sleeve may be provided with a threaded hole, and the upper end of the lower insert sleeve may be provided with an external threaded section.
In the first embodiment, the lower end of the upper plug bush is in threaded connection with the upper end of the lower plug bush, and the threaded connection section of the upper plug bush and the threaded connection section of the lower plug bush form a middle height-adjusting section. In other embodiments, one of the upper plug bushes can be an inner pipe, the other one of the upper plug bushes can be an outer pipe, the inner pipe and the outer pipe are connected in a sleeved mode, specifically, multistage pin holes are formed in the inner pipe and the outer pipe, pins can be inserted after the height of the inner pipe and the outer pipe is adjusted to be appropriate, in order to ensure that the inner pipe and the outer pipe can be separated to adjust the height of the whole device, the inner pipe and the outer pipe can also rotate relatively to achieve accurate insertion of the inner pipe and the outer pipe to corresponding end nuts, and the multistage pin holes in the inner pipe and the. At the moment, the overlapped sections of the inner pipe and the outer pipe form a middle height-adjusting section, and radial slots also can not be arranged on the inner pipe and the outer pipe.
In other embodiments, the middle height-adjusting section can also be provided separately, for example, the middle height-adjusting section is a sleeve body which is through up and down, an internal thread is provided in the sleeve body, the lower end of the upper insert sleeve and the upper end of the lower insert sleeve are both provided with external thread sections, the upper insert sleeve and the lower insert sleeve are both connected with the sleeve body by screw threads, at this time, radial slots are not required to be provided on the upper insert sleeve and the lower insert sleeve, when the nut is disassembled and assembled, the whole device can be firstly placed between the upper flange and the lower flange, the lower jack of the lower plug bush is firstly prevented from rotating and is plugged with the upper nut of the lower flange, then the sleeve body is rotated, the sleeve body is screwed out from the external thread section of the lower insert sleeve and spirally rises, meanwhile, the external thread section of the upper insert sleeve is screwed out from the internal thread of the sleeve body and linearly rises to be aligned with the lower nut of the upper flange, then the corresponding nut is disassembled and assembled, and the upper plug bush and/or the lower plug bush are/is provided with radial through holes.
Claims (5)
1. A nut dismounting tool is characterized by comprising:
a middle height-adjusting section;
the upper plug bush is positioned at the upper end of the middle heightening section and is provided with an upper plug hole for the rotation stopping plug-in mounting with a lower nut of the upper flange;
the lower plug bush is positioned at the lower end of the middle heightening section and is provided with a lower plug hole for the rotation stopping plug-in mounting with an upper nut of the lower flange;
the upper plug bush and/or the lower plug bush are/is provided with radial through holes, the radial through holes are used for being penetrated with stop rods, and the stop rods are used for being matched with the central pipe in a stop mode so as to prevent the corresponding plug bushes from rotating when the nuts are assembled and disassembled.
2. The tool for nut attachment and detachment according to claim 1, characterized in that: the lower end of the upper plug bush is in threaded connection with the upper end of the lower plug bush, and the threaded connection section of the upper plug bush and the threaded connection section of the lower plug bush form the middle height-adjusting section.
3. The tool for nut attachment and detachment according to claim 2, characterized in that: the upper jack and the lower jack are respectively provided with a radial slot, and the radial slots can allow nuts to radially enter the corresponding jacks, so that the whole device is placed between the upper flange and the lower flange along the horizontal direction, and the rotation stopping insertion of the upper plug bush and the lower plug bush on the nuts at the corresponding ends is completed.
4. The tool for nut attachment and detachment according to any one of claims 1 to 3, characterized in that: the upper plug bush and the lower plug bush are both provided with the radial through holes.
5. The tool for nut attachment and detachment according to any one of claims 1 to 3, characterized in that: the cross sections of the upper insertion hole and the lower insertion hole are in a hexagonal shape or a quincunx shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944424.1U CN210307635U (en) | 2019-06-21 | 2019-06-21 | Tool for disassembling and assembling nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944424.1U CN210307635U (en) | 2019-06-21 | 2019-06-21 | Tool for disassembling and assembling nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210307635U true CN210307635U (en) | 2020-04-14 |
Family
ID=70145570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920944424.1U Active CN210307635U (en) | 2019-06-21 | 2019-06-21 | Tool for disassembling and assembling nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210307635U (en) |
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2019
- 2019-06-21 CN CN201920944424.1U patent/CN210307635U/en active Active
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