CN207673285U - Sealing tricone bit with pressure oil storage compensating device - Google Patents
Sealing tricone bit with pressure oil storage compensating device Download PDFInfo
- Publication number
- CN207673285U CN207673285U CN201721823943.XU CN201721823943U CN207673285U CN 207673285 U CN207673285 U CN 207673285U CN 201721823943 U CN201721823943 U CN 201721823943U CN 207673285 U CN207673285 U CN 207673285U
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- oil storage
- bit leg
- gland
- bit
- compensating device
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Abstract
The utility model is related to rock bit technical fields, more particularly to a kind of sealing tricone bit with pressure oil storage compensating device, including gear wheel, bit leg and the locking ball on the outside of bit leg, the locking ball is arranged between gear wheel and " R " slot of bit leg, bit leg is connected by bit leg journel with gear wheel, gear wheel endoporus forms bearing seal chamber by sealing element and bit leg journel, bearing bore is connected with the pressure oil storage compensating device being arranged on bit leg, pressure oil storage compensating device is mainly by oil storage bag, lubricating cup, gland, gland baffle ring, gland ring, disc spring, pressure transmission hole；Matrix thickness H >=6 millimeter between gland baffle ring and the bit leg palm back of the body.The utility model reduces the volume of oil storage hole to increase the matrix thickness between oil storage hole gland baffle ring and the palm back of the body on the basis of verification experimental verification is feasible; to achieve the effect that protect oil storage hole, the phenomenon that palm back of the body excessive wear of the rock bit in drilling well causes oil storage cup is avoided.
Description
Technical field
The utility model is related to rock bit technical field more particularly to a kind of sealings three with pressure oil storage compensating device
Rock bit.
Background technology
Rock bit is a kind of tool of the fractured rock in the earth's crust.It is visited in oil, gas drilling and other mining drills
Most of the rock bit that aspect uses is seal form.Sealed roller cone drill bit is mainly by bit leg, bit leg axis, gear wheel, tooth
Wheel bore, locking element and sealing element are constituted.The key factor of the service life of rock bit is influenced in oil, gas drilling
It is service life i.e. bearing life and the sealing life of bearing arrangement.And bearing life is largely dependent upon the service life of sealing,
Tricone bit sealing ring when shaft bottom works works under prodigious pressure difference, the work of tricone bit pressure oil storage compensating device
With being exactly in order to reduce the pressure difference of sealing ring both sides, to make sealing ring work under smaller pressure difference, sealing ring is extended
Service life, most of rock bit used at present be all carry pressure oil storage compensating device, tricone bit due to
The size of bit diameter and the size for limiting the bit leg palm back of the body, to determine that the matrix between oil storage hole gland baffle ring and the palm back of the body is thick
Degree will not be very big, it is easy to and there is abrasion and gland baffle ring is caused to fall off, and currently with the further exploitation of petroleum resources, it is conventional
The minable oil well quantity of drilling well is fewer and fewer, and the difficulty of exploitation is increasing, and the oil well developed using unconventional drilling well is more next
More, the special wells such as directional well, inclined shaft, extended reach well, horizontal well, Multilateral Wells ratio shared in oil exploitation is more next
It is bigger, and bore and meet gradually increasing for abrasive layer, drill bit is in underground stress and wears increasingly serious, it is easy to cause bit leg
Palm back of the body excessive wear makes the damage of pressure oil storage compensating device cause to which the broken gland baffle ring of appearance causes gland and lubricating cup to fall off
Drill bit premature failure.
Utility model content
Purpose of the utility model is to overcome the shortcomings of the above technology, and to provide a kind of with pressure oil storage compensating device
Seal tricone bit.
The utility model to achieve the above object, using following technical scheme：
A kind of sealing tricone bit with pressure oil storage compensating device, it is characterised in that：Including gear wheel, bit leg and position
Locking ball on the outside of bit leg, the locking ball are arranged between gear wheel and " R " slot of bit leg, and bit leg passes through bit leg journel
It is connected with gear wheel, gear wheel endoporus forms bearing seal chamber by sealing element and bit leg journel, is arranged on bearing bore and bit leg
Pressure oil storage compensating device is connected, and pressure oil storage compensating device is mainly close by oil storage bag, lubricating cup, gland, gland baffle ring, gland
Seal, disc spring, pressure transmission hole, the oil sac are connect with the bottom of the lubricating cup, around the gland with the bit leg oil storage hole
Inner wall connection, the gland ring is placed between the gland and the inner wall of the bit leg oil storage hole, and gland baffle ring is fixed
In the outside of bit leg oil storage hole, the disc spring is set between gland baffle ring and the gland；Long oilhole is equipped in the bit leg,
The long oilhole is connected to the center oilhole and inclined oil hole of air being arranged on pressing device axle journal respectively by plug pin hole；Gland baffle ring and tooth
Matrix thickness H >=6 millimeter between the palm palm back of the body.
The utility model has the beneficial effects that:Compared with the existing technology, tricone bit due to bit diameter size and
The size for limiting the bit leg palm back of the body is held very much to which the matrix thickness determined between oil storage hole gland baffle ring and the palm back of the body will not be very big
Abrasion easily occur causes gland baffle ring to fall off, and the utility model reduces the volume of oil storage hole on the basis of verification experimental verification is feasible
To increase the matrix thickness between oil storage hole gland baffle ring and the palm back of the body, to achieve the effect that protect oil storage hole, brill is avoided
The phenomenon that rock bit palm back of the body excessive wear in well causes oil storage cup.Such structure can effectively extend rock bit pressure
Be conducive to improve drilling efficiency and reduction to extend the service life of cone bit bearing with the service life of oil storage compensating device
Drilling cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment drill bit.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment of the present utility model is described in detail in preferred embodiment.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to the utility model
Limitation.
As shown in Figure 1, a kind of sealing tricone bit with pressure oil storage compensating device, including gear wheel 2, bit leg 1 and
Locking ball 3 on the outside of bit leg is constituted, and the locking ball is arranged between gear wheel and " R " slot of bit leg.Bit leg 1 is logical
It crosses bit leg journel 15 with gear wheel 2 to be connected, gear wheel endoporus forms bearing seal chamber 16, axis by sealing element 4 and bit leg journel 15
It holds chamber 16 and is connected with the pressure and oil storage compensating device being arranged on bit leg 1.Pressure oil storage compensating device mainly by oil storage bag 5,
Lubricating cup 6, gland 7, gland baffle ring 9, gland ring 8, disc spring 10, pressure transmission hole 13 and the long oilhole 11 being connected with bearing,
The compositions such as plug pin hole 12, inclined oil hole of air 18 and center oilhole 17, when assembly lubricating cup 6 push down oil storage bag 5 make oil storage bag play it is fixed and
Sealing function, gland 7 are pushed down lubricating cup 6 again and are sealed by gland ring 8, finally by 9 fixed position of gland baffle ring.Pressure is stored up
5 volume of oil storage bag in oily compensation device is reduced to original 70%~80%, so as to make oil storage hole and entire oil storage compensation
The volume of device reduces 70%~80%, to increase the matrix thickness H between gland baffle ring 9 and the bit leg palm back of the body 14.Gland stop
Matrix thickness H >=6 millimeter between circle 9 and the bit leg palm back of the body 14.
After drill bit assembles the part of pressure oil storage compensating device, the grease for having certain pressure through the oil filler point on gland
19 are injected into the oil storage bag 5 in oil storage compensating device, lubricating cup 6 and bearing bore 16, if when drill bit when shaft bottom works drill bit
External pressure will lead to pressure transmission hole 13 and pass to oil storage bag 5 when external pressure is excessive, under pressure oil storage bag 5 and lubricating cup 6
In grease entered in bearing bore by long oilhole 11, plug pin hole 12, inclined oil hole of air 18 and center oilhole 17, sealing can be made in this way
Circle 4 works under smaller pressure difference, if the bearing bore when bit bearing chamber internal pressure is excessive when shaft bottom works for drill bit
In 16 pressure will grease by plug pin hole 12, center oilhole 17, inclined oil hole of air 18 and long oilhole 11 shift onto pressure oil storage mend
Repay oil storage bag 5 in device, in lubricating cup 6, then oil storage bag 5 releases some greases by pressure transmission hole 13, reduces bearing bore 16 and presses
Power also can make sealing ring 4 work under smaller pressure difference in this way, and the main function of pressure oil storage compensating device is exactly to bearing
Chamber is for grease lubrication and sealing ring 4 is made to work under smaller pressure difference, makes to extend rock bit sealing 4 and bearing
With the service life, the working life of pressure oil storage compensating device largely determines the service life of whole drill bit, to shadow
Drilling efficiency and drilling cost are rung.
Technical solutions of the utility model have passed through Oil Field using verification, meet applying working condition condition, have
Body method is that the oil storage bag 5 in pressure oil storage compensating device is reduced to original 70%~80%, so as to make oil storage hole and whole
The volume of a oil storage compensating device reduces 70%~80%, finds that bit lubrication fat is from the drill bit after dissection Oil Field use
It uses enough, the reduction of oil storage bag 5 makes the volume of oil storage hole and entire pressure oil storage compensating device reduce to increase pressure
Matrix thickness H between lid baffle ring 9 and the bit leg palm back of the body 14 avoids the palm back of the body abrasion of the rock bit in drilling well and causes oil storage cup
Phenomenon, such structure can effectively extend the service life of rock bit pressure oil storage compensating device, to extend rock bit sealing
Be conducive to improve drilling efficiency and reduce drilling cost to extend the service life of drill bit with the service life of bearing.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (1)
1. a kind of sealing tricone bit with pressure oil storage compensating device, it is characterised in that：Including gear wheel, bit leg and it is located at
Locking ball on the outside of bit leg, the locking ball are arranged between gear wheel and " R " slot of bit leg, bit leg by bit leg journel with
Gear wheel is connected, and gear wheel endoporus forms bearing seal chamber, the pressure being arranged on bearing bore and bit leg by sealing element and bit leg journel
Power oil storage compensating device is connected, and pressure oil storage compensating device is mainly sealed by oil storage bag, lubricating cup, gland, gland baffle ring, gland
Circle, disc spring, pressure transmission hole, the oil sac are connect with the bottom of the lubricating cup, around the gland with the bit leg oil storage hole
Inner wall connects, and the gland ring is placed between the gland and the inner wall of the bit leg oil storage hole, and gland baffle ring is fixed on
The disc spring is arranged in the outside of bit leg oil storage hole between gland baffle ring and the gland；Long oilhole, institute are equipped in the bit leg
Long oilhole is stated to be connected to the center oilhole and inclined oil hole of air being arranged on pressing device axle journal respectively by plug pin hole；Gland baffle ring and bit leg
Matrix thickness H >=6 millimeter between the palm back of the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823943.XU CN207673285U (en) | 2017-12-22 | 2017-12-22 | Sealing tricone bit with pressure oil storage compensating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823943.XU CN207673285U (en) | 2017-12-22 | 2017-12-22 | Sealing tricone bit with pressure oil storage compensating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673285U true CN207673285U (en) | 2018-07-31 |
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ID=62970819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721823943.XU Active CN207673285U (en) | 2017-12-22 | 2017-12-22 | Sealing tricone bit with pressure oil storage compensating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207673285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145392A (en) * | 2023-10-31 | 2023-12-01 | 山东昊锐岩土钻具有限公司 | Fast-assembling type roller bit and drilling tool using same |
-
2017
- 2017-12-22 CN CN201721823943.XU patent/CN207673285U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145392A (en) * | 2023-10-31 | 2023-12-01 | 山东昊锐岩土钻具有限公司 | Fast-assembling type roller bit and drilling tool using same |
| CN117145392B (en) * | 2023-10-31 | 2024-01-12 | 山东昊锐岩土钻具有限公司 | Fast-assembling type roller bit and drilling tool using same |
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