CN205936488U - Polish rod sealer - Google Patents
Polish rod sealer Download PDFInfo
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- CN205936488U CN205936488U CN201620908641.1U CN201620908641U CN205936488U CN 205936488 U CN205936488 U CN 205936488U CN 201620908641 U CN201620908641 U CN 201620908641U CN 205936488 U CN205936488 U CN 205936488U
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- packing
- polished rod
- box
- primary seal
- filler
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Abstract
The utility model provides a polish rod sealer, a sealed anti -pollution device of production tree in the oil field production system is related to, this polish rod sealer is including the primary seal lid of order connection from top to bottom, primary seal box and reserve packing box, the primary seal lid, the holding chamber of lining up about primary seal box and reserve packing box all have, the holding chamber of primary seal box is including the filler portion and the packing portion that from top to bottom set up, the internal face of filler portion is the cylinder, the internal face of packing portion is the conical surface of convergent from top to bottom, be equipped with the toper packing in the packing portion, the cavity that link up about the toper packing has, the internal face tapering of the outer wall of toper packing and packing portion is the same and closely cooperate, the intussuseption of filler portion is filled with sealing filler. The utility model provides a polish rod sealer not only can be continuously sealed effectively to the polished rod, still has the function that prevents the polished rod and grind partially.
Description
Technical field
The utility model is related to the sealing anti-fouler of production tree in oil field development system, particularly to a kind of polished rod seal
Device.
Background technology
Sealing machine for oil well polish rod seals the annular space between polished rod and oil pipe together with wellhead sealing box, prevents well head
Oil leak is it is ensured that polished rod can make upper and lower reciprocating motion wherein.
At present, the top of polished rod sealer is packing box, is mounted with a normally opened light between packing box and production tree
Rod seal rubber gate, when changing the filler of packing box it is necessary to cut off oil pumper, closes polished rod rubber gate, then opens
Gland for packing box, then change the filler within packing box.
Also have in prior art and can not stop to take out the polished rod sealer changing filler, as shown in figure 1, polished rod sealer is by position
In packing seal storehouse and the backup seal device composition being located at bottom on top, top packing seal storehouse is by pressure cap 1, gland
2nd, filler compressing tablet 3, filler body 4, lock-screw 5 and sealing door 13 form, and bottom backup seal device is by flap chamber 6, fixed
Position pin 7, lower filler body end cap 8, filler adjusting screw rod 9, cylindricality filler 10 and cylindricality filler support 11 form.Filler body 4
For cylindrical shape, rectangle hole is had on the outer wall of filler body 4 and sealing door 13 is installed；Upper end in filler body 4
It is provided with pressure cap 1, gland 2 and filler compressing tablet 3, pressure cap 1, gland 2 and filler compressing tablet 3 have centre bore.Polished rod is from pressure
The centre bore of the centre bore of cap 1, the centre bore of gland 2 and filler compressing tablet 3 passes through.Symmetrical on the outer wall of filler body 4
It is welded with the flap chamber 6 of backup seal device, flap chamber 6 is cylindrical and is vertically arranged with filler body 4, has in flap chamber 6
Cylindricality filler 10, sealing ring 12 and filler support 11, the end of filler support 11 is connected with filler adjusting screw rod 9.Wherein, top
Sealing system based on packing seal storehouse, bottom backup seal device is second sealing system is open mode at ordinary times, needs to replace with
During airtight and watertight padding in portion packing seal storehouse, in the case of without cutting off oil pumper, it is first shut off bottom backup seal device,
Make cylindricality filler 10 hold polished rod tightly, realize the sealing to polished rod, after completing the airtight and watertight padding replacing in top packing seal storehouse, open
Bottom backup seal device, does not stop the replacing that oil pumper work just can complete airtight and watertight padding.
Above-mentioned do not stop to take out change the polished rod sealer of filler in use, because polished rod is seldom right when going out from well head
The positive well head center of circle, and polished rod sealer, using the well head center of circle as reference for installation, certainly will cause the mill to sealer packing for the polished rod
Damage, particularly when the hole condition of oil well is bad or load increases, polished rod is more serious for the eccentric wear of sealer packing.
Above-mentioned do not stop to take out the polished rod sealer changing filler it is impossible to continuously and effectively being held tightly to polished rod or seal, no
But very easily reveal, cause packing leakage and production tree pollution, also increase workman and process the labour intensity of pollution and process dirty
Contaminate the various materials being occurred, ultimately increase production cost.And, due to can not continuously and effectively polished rod be carried out hold tightly and
Sealing, in polished rod running radial direction eccentric wear pendulum power all can only be born by packing thus accelerate the packing rate of wear so that
The consumption of packing not only increased greatly the labour intensity of site operation personnel, also add material cost.Further, since can not hold
Continue and effectively polished rod is held tightly and seal, sealer is higher to the circularity of polished rod and smoothness requirements, otherwise easily misses.
Utility model content
The purpose of this utility model is to propose a kind of polished rod sealer, not only polished rod continuously and effectively can be sealed,
Also there is the function of preventing polished rod eccentric wear.
For reaching above-mentioned purpose, the utility model proposes a kind of polished rod sealer, wherein, described polished rod sealer include by
Primary seal lid, primary seal box and the standby packing box being up to linked in sequence down, described primary seal lid, described primary seal box and
Described standby packing box is respectively provided with the accommodating cavity of up/down perforation, and what the accommodating cavity of described primary seal box included from top to bottom arranging fills out
Material portion and packing portion, the internal face in described filler portion is cylinder, and the internal face in described packing portion is the conical surface tapered from top to bottom,
It is provided with tapered packing, described tapered packing has and can accommodate the cavity that polished rod passes through, described tapered packing in described packing portion
Outside wall surface is identical with the internal face taper in described packing portion and is fitted close, and described filler is filled with airtight and watertight padding in portion.
Polished rod sealer as above, wherein, described polished rod sealer also includes side seal box, and described side seal box is
The column being obliquely installed, its bottom is fixed on the side wall in described filler portion, described side seal box have along its axially through
Packing cavity, described filler chamber is connected with the described filler portion of described primary seal box, is filled with described sealing in described filler chamber
Filler, the top in described filler chamber is provided with side seal lid.
Polished rod sealer as above, wherein, is additionally provided with side Glan, the top top of described side Glan in described filler chamber
It is butted on described side seal lid, the bottom of described side Glan is resisted against described airtight and watertight padding.
Polished rod sealer as above, wherein, described side seal lid is threadeded with described side seal box, described
It is additionally provided with handle on the outer wall of side seal lid.
Polished rod sealer as above, wherein, the outer wall of described primary seal lid is connected with antifouling box, described antifouling
There is in box trapped fuel chamber, drainage channel, the one end open of described drainage channel are offered on the outer wall of described primary seal lid
In the internal face of described primary seal lid, the other end of described drainage channel is connected with described trapped fuel chamber.
Polished rod sealer as above, wherein, the bottom of described antifouling box is provided with capable of opening and closing gate, described gate with
Described trapped fuel chamber is connected.
Polished rod sealer as above, wherein, is additionally provided with nominative orchid, the blue top of described nominative in described primary seal box
End is resisted against described primary seal lid, and the blue bottom of described nominative is resisted against described airtight and watertight padding.
Polished rod sealer as above, wherein, described primary seal lid is threadeded with described primary seal box, described
It is additionally provided with handle on the outer wall of primary seal lid.
Polished rod sealer as above, wherein, the lower section of described standby packing box is also associated with universal ball joint, described
Universal ball joint has the cavity of up/down perforation.
Polished rod sealer as above, wherein, is provided with the standby disk that can separate and close in described standby packing box
Root, holds described polished rod tightly after described standby packing closure.
Compared with prior art, the utility model has the characteristics that and advantage：
The utility model proposes polished rod sealer, be not only filled with airtight and watertight padding in its primary seal box and be additionally provided with taper
Packing, polished rod passes through tapered packing, and the outside wall surface of tapered packing is fitted close with the internal face of primary seal box, polished rod can be carried out
Tuningout, reduces polished rod eccentric wear, and then reduces the consumption to packing in use；It is additionally provided with sealing on tapered packing to fill out
Material, airtight and watertight padding can further seal to polished rod, prevent from revealing, and the airtight and watertight padding of elasticity can occur bullet
Property deformation, even if due to the impact of hole condition and load, slight eccentric wear in polished rod, and the airtight and watertight padding of elasticity can also adapt to partially
Mill, loss is less, not only reduces the labour intensity that operating personnel frequently change packing and process greasy dirt tree, also a saving production
Material cost.
Brief description
Accompanying drawing described here is only used for task of explanation, and is not intended to limit disclosed in the utility model by any way
Scope.In addition, the shape of each part of in figure and proportional sizes etc. are only schematically, it is used to help to reason of the present utility model
Solution, is not shape and the proportional sizes specifically limiting each part of the utility model.Those skilled in the art is new in this practicality
Under the teaching of type, various possible shapes and proportional sizes can be selected as the case may be to implement the utility model.
Fig. 1 is the structural representation of polished rod sealer of the prior art；
Fig. 2 be the utility model proposes polished rod sealer structural representation.
Description of reference numerals：
1 pressure cap；2 glands；
3 filler compressing tablets；4 filler body；
5 lock-screws；6 flap chambeies；
7 alignment pins；8 times filler body end caps；
9 filler adjusting screw rods；10 cylindricality fillers；
11 cylindricality filler supports；12 sealing rings；
100 polished rod sealers；110 primary seal lids；
111 drainage channels；112 handles；
120 primary seal boxes；121 filler portions；
122 packing portions；123 tapered packings；
124 airtight and watertight paddings；125 nominatives are blue；
130 standby packing boxs；140 universal joints；
150 side seal boxes；151 packing cavities；
152 side Glans；160 side seal lids；
161 handles；170 antifouling boxes；
171 trapped fuel chambeies；172 gates.
Specific embodiment
In conjunction with the description of accompanying drawing and the utility model specific embodiment, can clearly understand of the present utility model
Details.But, specific embodiment of the present utility model described here, it is only used for explaining the purpose of this utility model, and not
Can be understood as by any way being to restriction of the present utility model.Under teaching of the present utility model, technical staff is contemplated that
Based on arbitrarily possible deformation of the present utility model, these are regarded as belonging to scope of the present utility model.
Refer to Fig. 2, for the utility model proposes polished rod sealer structural representation；As shown in Fig. 2 this practicality is new
The polished rod sealer 100 that type proposes, including the primary seal lid 110 being from top to bottom linked in sequence, primary seal box 120 and standby disk
Root box 130, primary seal lid 110, primary seal box 120 and standby packing box 130 are respectively provided with the accommodating cavity of up/down perforation, primary seal
The accommodating cavity of box 120 includes the filler portion 121 from top to bottom arranging and packing portion 122, and the internal face in filler portion 121 is cylinder,
The internal face in packing portion 122 is the conical surface tapered from top to bottom, is provided with tapered packing 123, tapered packing 123 in packing portion 122
There is the cavity of up/down perforation, the outside wall surface of tapered packing 123 is identical with the internal face taper in packing portion 122 and is fitted close,
It is filled with airtight and watertight padding 124, airtight and watertight padding 124 is compressed by primary seal lid 110 in filler portion 122.
During installation, polished rod is made to sequentially pass through the accommodating cavity of primary seal lid 110, the accommodating cavity of primary seal box 120 and standby
The accommodating cavity of packing box 130, compresses airtight and watertight padding 124 by primary seal lid 110, makes the airtight and watertight padding in primary seal box 120
124 and tapered packing 123 hold polished rod tightly, by airtight and watertight padding 124 and tapered packing 123 enclasping force to polished rod, realize to light
The sealing of bar.
Not only it is filled with airtight and watertight padding 124 in the primary seal box 120 of polished rod sealer 100 and be additionally provided with tapered packing 123,
Polished rod passes through the cavity of tapered packing 123 and airtight and watertight padding 124 and is held tightly by tapered packing 123 and airtight and watertight padding 124, Jin Ershi
The now sealing to polished rod.Because polished rod is held tightly by tapered packing 123 and airtight and watertight padding 124 simultaneously, even if the circularity of polished rod or light
Slippery slightly flaw still can realize sealing to polished rod, also just reduce and lower for the circularity of polished rod and smoothness requirements,
Reduce production cost.
Polished rod passes through tapered packing 123 being held tightly by tapered packing, the outside wall surface of tapered packing 123 and packing portion 122
Internal face is fitted close, and polished rod can be carried out with tuningout, reduces the eccentric wear of polished rod, and then reduces in use to conical disc
The consumption of root 123.It is additionally provided with airtight and watertight padding 124, airtight and watertight padding 124 can be further right above tapered packing 123
Polished rod is sealed, and prevents from revealing, and when due to the impact of hole condition and load, when slight eccentric wear in polished rod, elasticity
Airtight and watertight padding 124 can occur elastic deformation, makes airtight and watertight padding 124 be adapted to the eccentric wear of polished rod, loss is less, not only reduces
The labour intensity that operating personnel frequently change packing and airtight and watertight padding and process greasy dirt tree, also a saving production material one-tenth
This.
Polished rod sealer 100 also includes standby packing box 130, and being provided with standby packing box 130 can be separate and closure
Standby packing, can hold polished rod tightly after standby packing closure, when oil leak occurring and require supplementation with or change airtight and watertight padding 124,
Make the standby packing in standby packing box 130 hold polished rod tightly in oil pumper running, realize the sealing to polished rod, you can will lead
Sealing box cover 110 opens the supplement carrying out airtight and watertight padding 124 or replacing it is achieved that not stopping to take out the leakage processing polished rod sealer 100
Lose.
Airtight and watertight padding 124 can employing can reuse waste and old there is elastic and wear-resisting material, for example, waste and old
Packing or belt etc., with cost of implementation maximum economized.
In one optional example of the utility model, as shown in Fig. 2 polished rod sealer 100 also includes side seal box
150, side seal box 150 is the column being obliquely installed, and the bottom of side seal box 150 is fixed on the side wall in filler portion 121, side
Seal box 150 have along its axially through packing cavity 151, packing cavity 151 is connected with filler portion 121, in packing cavity 151
It is filled with airtight and watertight padding 124, the top of packing cavity 151 is removedly provided with side seal lid 160.In primary seal lid 110
In the presence of side seal lid 160, tapered packing 123 is pressed tighter and tighter when descending, thus more guaranteeing the effect sealing.Separately
Outward, when needing to change or supplement airtight and watertight padding 124, close standby packing, suitably unclamp primary seal lid 110, by side seal
Lid 160 is dismantled, and inserts airtight and watertight padding 124 from the top of packing cavity 151, after airtight and watertight padding 124 is filled up, loads onto side seal box
Lid 160 is simultaneously tightened, and subsequently suitably screws primary seal lid 110, and opening standby packing can be so that changing or supplementing sealing
Filler 124 more convenient to operate.
In one optional example of the utility model, as shown in Fig. 2 being additionally provided with side Glan 152, side in packing cavity 151
The top of Glan 152 is resisted against side seal lid 160, and the bottom of side Glan 152 is resisted against airtight and watertight padding 124, side Glan 152 energy
The airtight and watertight padding 124 of enough further compressions, realizes better seal effect.
In one optional example of the utility model, as shown in Fig. 2 being additionally provided with the outer wall of side seal lid 160
Handle 161, is easy to the dismounting of side seal lid 160.
In one optional example of the utility model, side seal lid 160 is threadeded with side seal box 150.
In one optional example of the utility model, as shown in Fig. 2 being connected with anti-on the outer wall of primary seal lid 110
Dirty box 170, has trapped fuel chamber 171 in antifouling box 170, primary seal lid 110 outer wall also on offer drainage channel 111,
The one end open of drainage channel 111 on the internal face of primary seal lid 110, the other end of drainage channel 111 and trapped fuel chamber 171
It is connected.So, once polished rod sealer 110 lost efficacy, airtight and watertight padding 124 and tapered packing 123 occur asking to the sealing of polished rod
Topic, the sump oil spilling can also at ambient pressure from drainage channel 111 automatically into close without omitting out polished rod in antifouling box 170
Outside envelope device 100, it is to avoid the pollution to environment for the sump oil.
In one optional example of the utility model, as shown in Fig. 2 the bottom of antifouling box 170 is provided with capable of opening and closing lock
Door 172, gate 172 is connected with trapped fuel chamber 171.The design of gate 172 greatly facilitates the recovery of sump oil in antifouling box 170.
Note observing in antifouling box 170 whether there is greasy dirt when patrolling and examining, if there are greasy dirt, then suitably screw primary seal lid 110, be used in combination
Sump oil in antifouling box 170 is taken away at gate 172 by sump oil barrel.
In one optional example of the utility model, as shown in Fig. 2 also setting up nominative orchid 125 in primary seal box 120,
The top of nominative orchid 125 is resisted against primary seal lid 110, and the bottom of nominative orchid 125 is resisted against airtight and watertight padding 124, nominative orchid 125
Airtight and watertight padding 124 can further be compressed, realize better seal effect.
In one optional example of the utility model, primary seal lid 110 is threadeded with primary seal box 120, is leading
Handle 112 is additionally provided with the outer wall of sealing box cover 110, is easy to the dismounting of primary seal lid 110.
In one optional example of the utility model, as shown in Fig. 2 the lower section of standby packing box 130 is also associated with ball
Shape universal joint 140, universal ball joint 140 has the cavity accommodating the up/down perforation that polished rod passes through.Universal ball joint 140 can be right
Tuningout further realized by polished rod.
In one optional example of the utility model, as shown in figure 1, standby packing box 130 includes two being symmetrical arranged
Installation cavity, this above-mentioned installation cavity is cylindrical and lower section that be vertically installed in primary seal box 120, and standby packing includes relatively setting
The left seal put and right seal, left seal and right seal are located in above-mentioned two installation cavity respectively, and left sealing
Body and right seal can move back and forth along the internal face of the respective installation cavity being located.Left seal and right seal are mutually closed
After can hold polished rod tightly.
The course of work of the present utility model is as follows：
1st, first tapered packing 123 is loaded in body seal box 120, subsequently will be cut with scissors fragmented various wear-resisting
And the resilient particle of tool makes it become airtight and watertight padding 124, will be close from the top in filler portion 121 and the top end of packing cavity 151
Packing material 124 is inserted in body seal box 120 and side seal box 160, is subsequently respectively charged into nominative blue 125 and side Glan 152
In primary seal box 120 and side seal box 150, finally, handle 112 and the side seal box of primary seal lid 110 are successively grasped
The handle 161 of lid 160, sequentially primary seal lid 110 is installed on primary seal box 120, side seal lid 160 is installed to side
On seal box 150；
2nd, will be tightly dead to primary seal lid 110 and side seal lid 160, observe whether polished rod has band silk noil phenomenon, if having,
Primary seal lid 110 is tightened again until polished rod is without silk noil, polished rod sealer 100 is not missed when pump polished rod is descending.
3rd, when oil pumper runs discovery polished rod band oil after a period of time, tighten primary seal lid 110 again and suitably revolve
Tight side seal lid 160, thus realizes airtight and watertight padding 124 and redistributes and hold tightly polished rod, realize the sealing to polished rod again,
And now in the presence of primary seal lid 110 and side seal lid 160, tapered packing 123 is pressed tighter and tighter when descending, thus
More guarantee the effect sealing.
4th, when airtight and watertight padding 124 requires supplementation with, during oil pumper runs, external force artificially is by standby packing
Standby packing in box 130 is tightened so as to hold polished rod tightly, suitably unclamps primary seal lid 110, by side seal lid 160 and side
Glan 152 is dismantled completely, inserts airtight and watertight padding 124 from the top end of packing cavity 151, after airtight and watertight padding 124 is filled up, by suitable
Sequence loads side Glan 152 and side seal lid 160, and tightens side seal lid 160, subsequently suitably screws primary seal lid 110,
Unclamp standby packing.
Noting observing in antifouling box 170 whether there is greasy dirt when the 5th, patrolling and examining, if having, suitably screwing primary seal lid 110, and
With sump oil barrel, the sump oil in antifouling box 170 is taken away at the gate 172 of bottom.
Explaining in detail for the respective embodiments described above, its purpose is only that and the utility model is explained, in order to
Better understood when the utility model, but, it is to limit of the present utility model that these descriptions can not be become with any explanation
System, particularly, each feature describing in various embodiments can also mutually be combined, thus forming other enforcements
Mode, except there being clearly contrary description, these features should be understood can be applied in any one embodiment, and simultaneously
It is not only limited to described embodiment.
Claims (10)
1. a kind of polished rod sealer is it is characterised in that described polished rod sealer includes the primary seal box being from top to bottom linked in sequence
Lid, primary seal box and standby packing box, described primary seal lid, described primary seal box and described standby packing box are respectively provided with up and down
The accommodating cavity of insertion, the accommodating cavity of described primary seal box includes the filler portion from top to bottom arranging and packing portion, described filler portion
Internal face be cylinder, the internal face in described packing portion is the conical surface tapered from top to bottom, is provided with conical disc in described packing portion
Root, described tapered packing has and can accommodate the cavity that polished rod passes through, and the outside wall surface of described tapered packing is interior with described packing portion
Wall taper is identical and is fitted close, and described filler is filled with airtight and watertight padding in portion.
2. polished rod sealer as claimed in claim 1 is it is characterised in that described polished rod sealer also includes side seal box, institute
Stating side seal box is the column being obliquely installed, and its bottom is fixed on the side wall in described filler portion, and described side seal box has
Along its axially through packing cavity, described filler chamber is connected with the described filler portion of described primary seal box, in described filler chamber
It is filled with described airtight and watertight padding, the top in described filler chamber is provided with side seal lid.
3. polished rod sealer as claimed in claim 2 is it is characterised in that be additionally provided with side Glan, described side in described filler chamber
The top of Glan is resisted against described side seal lid, and the bottom of described side Glan is resisted against described airtight and watertight padding.
4. polished rod sealer as claimed in claim 2 is it is characterised in that described side seal lid and described side seal box screw thread
Connect, the outer wall of described side seal lid is additionally provided with handle.
5. polished rod sealer as claimed in claim 1 is it is characterised in that be connected with antifouling on the outer wall of described primary seal lid
Box, has trapped fuel chamber in described antifouling box, offers drainage channel, described drainage channel on the outer wall of described primary seal lid
One end open in the internal face of described primary seal lid, the other end of described drainage channel is connected with described trapped fuel chamber.
6. polished rod sealer as claimed in claim 5 is it is characterised in that the bottom of described antifouling box is provided with capable of opening and closing lock
Door, described gate is connected with described trapped fuel chamber.
7. polished rod sealer as claimed in claim 1 is it is characterised in that be additionally provided with nominative orchid, institute in described primary seal box
State the blue top of nominative and be resisted against described primary seal lid, the blue bottom of described nominative is resisted against described airtight and watertight padding.
8. polished rod sealer as claimed in claim 1 is it is characterised in that described primary seal lid and described primary seal box screw thread
Connect, the outer wall of described primary seal lid is additionally provided with handle.
9. polished rod sealer as claimed in claim 1 it is characterised in that the lower section of described standby packing box be also associated with spherical
Universal joint, described universal ball joint has the cavity of up/down perforation.
10. polished rod sealer as claimed in claim 1 it is characterised in that be provided with described standby packing box can separately and
The standby packing of closure, holds described polished rod tightly after described standby packing closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620908641.1U CN205936488U (en) | 2016-08-19 | 2016-08-19 | Polish rod sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620908641.1U CN205936488U (en) | 2016-08-19 | 2016-08-19 | Polish rod sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936488U true CN205936488U (en) | 2017-02-08 |
Family
ID=57947351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620908641.1U Active CN205936488U (en) | 2016-08-19 | 2016-08-19 | Polish rod sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327283A (en) * | 2017-08-28 | 2017-11-07 | 李茂华 | A kind of anti-race oil packing box of novel and multifunctional double-vane anticreep |
| CN108661591A (en) * | 2018-08-07 | 2018-10-16 | 阜宁县石油机械有限公司 | A kind of polished rod sealer |
-
2016
- 2016-08-19 CN CN201620908641.1U patent/CN205936488U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327283A (en) * | 2017-08-28 | 2017-11-07 | 李茂华 | A kind of anti-race oil packing box of novel and multifunctional double-vane anticreep |
| CN107327283B (en) * | 2017-08-28 | 2023-04-25 | 李茂华 | Novel multi-functional double wing anticreep oil packing box that runs |
| CN108661591A (en) * | 2018-08-07 | 2018-10-16 | 阜宁县石油机械有限公司 | A kind of polished rod sealer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |