CN204252909U - Packing box - Google Patents
Packing box Download PDFInfo
- Publication number
- CN204252909U CN204252909U CN201420629707.4U CN201420629707U CN204252909U CN 204252909 U CN204252909 U CN 204252909U CN 201420629707 U CN201420629707 U CN 201420629707U CN 204252909 U CN204252909 U CN 204252909U
- Authority
- CN
- China
- Prior art keywords
- packing
- stuffing box
- box
- pipe nipple
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 title claims abstract description 100
- 210000002445 nipple Anatomy 0.000 claims description 52
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a packing box belongs to the mechanical maintenance field, include: the packing box, the short section and the oil pipe buckle are sequentially connected from top to bottom; the stuffing box is in a circular tube shape, the inner side of the lower end of the stuffing box is provided with a conical tube internal thread, and the stuffing box is used for filling packing; the short section is in a circular tube shape, the outer diameter of the short section is smaller than the inner diameter of the packing box, the outer side of the upper end of the short section is provided with a spinal external thread, the spinal external thread of the short section is matched with the spinal internal thread of the packing box and used for connecting the short section with the packing box, and the short section is used for bearing a tray root; the upper end of the oil pipe buckle head is welded with the lower end of the short section, and the lower end of the oil pipe buckle head can be connected with a screw thread of a blowout preventer; the length of the short section is larger than or equal to the depth of the stuffing box. The utility model provides a change time of packing longer, change the lower problem of efficiency, realized shortening the change time of packing, improved the effect of changing efficiency for the packing is changed.
Description
Technical field
The utility model relates to flight-line maintenance maintenance field, particularly a kind of packing box.
Background technology
In oil exploration process, after completing drilling well, oil pumper can be utilized to carry out crude oil production work, packing box is a kind of pumping unit well mouth polish rod sealing device, the effect of the annular space between sealing oil pipe and polished rod is played in oil well course of normal operation, packing is the rubber materials be seated in the packing box of oil pumping machine well head, Seal Oil, gas and water etc. are come in the polished rod reciprocatory movement of oil pumper, prevent oil, gas and water etc. excessive, when oil pump running, severe friction between polished rod and packing, packing consumption is large, therefore needs to change packing in time.
In prior art, packing box is divided into upper, middle, and lower part usually, its middle and upper part filling packing, bottom is connected with preventing the security seal wellhead assembly (blowout preventer) of blowout by a screw thread, mid portion is provided with the jube for support packing, because the packing in packing box is after pressure cap extrudes repeatedly, and can be together inter-adhesive, so when changing packing, need to use screwdriver to change packing.
But because packing is clipped between polished rod and packing box, the space of placing packing is comparatively narrow, therefore, when using screwdriver to change packing, the packing being in packing box bottom is just difficult to take out, therefore, the replacing construction of packing is long, changes efficiency lower.
Utility model content
In order to the replacing construction solving packing is long, change the problem that efficiency is lower, the utility model embodiment provides a kind of packing box.Described technical scheme is as follows:
Provide a kind of packing box, comprising: stuffing box, pipe nipple and oil pipe discount, described stuffing box, pipe nipple are from top to bottom connected successively with oil pipe discount;
Described stuffing box is cylindrical, and the lower end inside of described stuffing box is provided with intraspinal tube screw thread, and described stuffing box is for loading packing;
Described pipe nipple is cylindrical, the external diameter of described pipe nipple is less than the internal diameter of described stuffing box, the upper end arranged outside of described pipe nipple has canalis spinalis external screw thread, the canalis spinalis external screw thread of described pipe nipple and the intraspinal tube screw thread of described stuffing box match, be connected with described stuffing box for described pipe nipple, described pipe nipple is used for packing described in support;
The upper end of described oil pipe discount is welded with the lower end of described pipe nipple, the lower end of described oil pipe discount can with blowout preventer screwed connection;
The length of described pipe nipple is more than or equal to the degree of depth of described stuffing box.
Optionally, described stuffing box comprises 2 handles, and described 2 handles are positioned at the lower end outside of described stuffing box, and described 2 handles are symmetrical with the lengthwise cross section of described stuffing box.
Optionally, described handle is column, and the length direction of described handle is vertical with described lengthwise cross section.
Optionally, described intraspinal tube screw thread and the left-handed left-hand thread of described canalis spinalis external screw thread.
Optionally, described packing box also comprises: pressure cap, and described pressure cap is connected with the threaded upper ends of described stuffing box, and described pressure cap is used for described packing and polished rod seal to fix.
The utility model provides a kind of packing box, due in the process of getting packing, can be rotated down top stuffing box, packing is stopped by middle pipe nipple, packing can not be descending, and after stuffing box and pipe nipple get loose, stuffing box can fall along pipe nipple, thus packing is come out, get the method for packing compared to existing packing box, the replacing construction of packing is shorter, changes efficiency higher, therefore, it is possible to effectively shorten the replacing construction of packing, improve and change efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment 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 prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of packing box that the utility model embodiment provides;
Fig. 2 is the left-handed structural representation of a kind of screw thread dextrorotation that provides of the utility model embodiment and screw thread;
Fig. 3 is the structural representation of the another kind of packing box that the utility model embodiment provides.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The utility model embodiment provides a kind of packing box, is applied to polished rod 04, and as shown in Figure 1, this packing box comprises: stuffing box 01, pipe nipple 02 and oil pipe discount 03, and stuffing box 01, pipe nipple 02 are from top to bottom connected successively with oil pipe discount 03.
Wherein, stuffing box 01 is cylindrical, and the lower end inside of stuffing box 01 is provided with intraspinal tube screw thread, and stuffing box 01 is for loading packing 05; Pipe nipple 02 is cylindrical, the external diameter of pipe nipple 02 is less than the internal diameter of stuffing box 01, and the upper end arranged outside of pipe nipple 02 has canalis spinalis external screw thread, and the canalis spinalis external screw thread of pipe nipple 02 and the intraspinal tube screw thread of stuffing box 01 match, be connected with stuffing box 01 for pipe nipple 02, pipe nipple 02 is for support packing 05; The upper end of oil pipe discount 03 is welded with the lower end of pipe nipple 02, the lower end of oil pipe discount 03 can with blowout preventer 06 screwed connection; The length of pipe nipple 02 is more than or equal to the degree of depth of stuffing box 01.
In sum, the packing box that the utility model embodiment provides, due in the process of getting packing, can be rotated down top stuffing box, packing is stopped by middle pipe nipple, and packing can not be descending, after stuffing box and pipe nipple get loose, stuffing box can fall along pipe nipple, thus is come out by packing, gets the method for packing compared to existing packing box, the replacing construction of packing is shorter, change efficiency higher, therefore, it is possible to effectively shorten the replacing construction of packing, improve and change efficiency.
It should be noted that, being threaded between stuffing box 01 and pipe nipple 02 is sealed by screw thread, effectively can ensure bearing capacity and the sealing effectiveness of stuffing box 01 and pipe nipple 02, being threaded simultaneously between stuffing box 01 and pipe nipple 02 is that left-handed left-hand thread connects, and can prevent the stuffing box when compressing packing from occurring the phenomenon got loose.Concrete, according to the direction of circling of screw thread on the face of cylinder, be divided into left-handed (left-hand thread) and dextrorotation (right-hand thread) two kinds, wherein, the screw thread screwed in when turning clockwise is called right-handed thread, the screw thread screwed in when being rotated counterclockwise is called left hand thread, that is, when screw thread raises expression right-handed thread from left to right, when screw thread raises expression left hand thread from right to left, example, as shown in Figure 2, the screw thread of Fig. 2-1 raises from left to right, is right-handed thread, the screw thread of Fig. 2-2 raises from right to left, is left hand thread.
Further, Fig. 1 is the structural representation that packing box that the embodiment of the present invention provides is applied to polished rod, and the concrete structure of the packing box that the embodiment of the present invention provides can reference diagram 3.
It should be noted that, as shown in Figure 3, stuffing box 01 can comprise 2 handles 011,2 handles 011 are positioned at the lower end outside of stuffing box 01,2 handles 011 are symmetrical with the lengthwise cross section B of stuffing box 01, handle 011 is convenient to stuffing box to rotate along pipe nipple downwards packing is come out, and in figure 3, lengthwise cross section B is the plane in face, vertical view 3 place.Further, handle 011 can be column, and the length direction a of handle 011 is vertical with the lengthwise cross section B of stuffing box 01, example, supposes that Fig. 3 midplane C is parallel this lengthwise cross section B, then the length direction a of handle 011 this plane C vertical.
As shown in Fig. 1 or Fig. 3, packing box 01 can also comprise: pressure cap 07, and pressure cap 07 is connected with the threaded upper ends of stuffing box 01, and pressure cap 07 is for sealing fixing by packing 05 and polished rod 04.
When packing box is installed, external diameter due to pipe nipple is less than the internal diameter of stuffing box, therefore pipe nipple can first screw in by operating personnel in stuffing box, with the canalis spinalis external screw thread outside the upper end of pipe nipple, stuffing box is connected with pipe nipple by the intraspinal tube screw thread of stuffing box lower end inside, the upper end of the lower end of pipe nipple with oil pipe discount is welded.The blowout preventer screwed connection of oil pipe discount and Christmas tree wellhead, polished rod through packing box, and utilizes pressure cap to be pressed in packing box by packing, makes packing and polished rod seal.When needs are changed packing, the handle that two of stuffing box lower end outside are symmetrical can be held, and be rotated down stuffing box along pipe nipple counterclockwise, stuffing box is descending along screw thread, now, packing is stopped by pipe nipple, packing can not be descending, when stuffing box is rotated down to disengagement screw thread, when namely stuffing box and pipe nipple get loose completely, stuffing box just free-falling to the bottom of pipe nipple, now, the packing in stuffing box is exposed to the open air out completely, and operating personnel just can take out packing, packing is changed, has so far completed whole operating process.
In sum, the packing box that the utility model embodiment provides, due in the process of getting packing, can be rotated down top stuffing box, packing is stopped by middle pipe nipple, and packing can not be descending, after stuffing box and pipe nipple get loose, stuffing box can fall along pipe nipple, thus is come out by packing, gets the method for packing compared to existing packing box, the replacing construction of packing is shorter, change efficiency higher, therefore, it is possible to effectively shorten the replacing construction of packing, improve and change efficiency.
It should be noted that, in practical application, the packing box using the invention process to provide, can foreshorten to about 10 minutes by 30-45 minute existing packing replacing time.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a packing box, is characterized in that, comprising: stuffing box, pipe nipple and oil pipe discount, and described stuffing box, pipe nipple are from top to bottom connected successively with oil pipe discount;
Described stuffing box is cylindrical, and the lower end inside of described stuffing box is provided with intraspinal tube screw thread, and described stuffing box is for loading packing;
Described pipe nipple is cylindrical, the external diameter of described pipe nipple is less than the internal diameter of described stuffing box, the upper end arranged outside of described pipe nipple has canalis spinalis external screw thread, the canalis spinalis external screw thread of described pipe nipple and the intraspinal tube screw thread of described stuffing box match, be connected with described stuffing box for described pipe nipple, described pipe nipple is used for packing described in support;
The upper end of described oil pipe discount is welded with the lower end of described pipe nipple, the lower end of described oil pipe discount can with blowout preventer screwed connection;
The length of described pipe nipple is more than or equal to the degree of depth of described stuffing box.
2. packing box according to claim 1, is characterized in that,
Described stuffing box comprises 2 handles, and described 2 handles are positioned at the lower end outside of described stuffing box, and described 2 handles are symmetrical with the lengthwise cross section of described stuffing box.
3. packing box according to claim 2, is characterized in that,
Described handle is column, and the length direction of described handle is vertical with described lengthwise cross section.
4. packing box according to claim 1, is characterized in that,
Described intraspinal tube screw thread and the left-handed left-hand thread of described canalis spinalis external screw thread.
5. packing box according to claim 1, is characterized in that, described packing box also comprises: pressure cap, and described pressure cap is connected with the threaded upper ends of described stuffing box, and described pressure cap is used for described packing and polished rod seal to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629707.4U CN204252909U (en) | 2014-10-28 | 2014-10-28 | Packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629707.4U CN204252909U (en) | 2014-10-28 | 2014-10-28 | Packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252909U true CN204252909U (en) | 2015-04-08 |
Family
ID=52957229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420629707.4U Expired - Fee Related CN204252909U (en) | 2014-10-28 | 2014-10-28 | Packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252909U (en) |
-
2014
- 2014-10-28 CN CN201420629707.4U patent/CN204252909U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |