CN203081300U - Star-shaped nozzle - Google Patents
Star-shaped nozzle Download PDFInfo
- Publication number
- CN203081300U CN203081300U CN 201320037090 CN201320037090U CN203081300U CN 203081300 U CN203081300 U CN 203081300U CN 201320037090 CN201320037090 CN 201320037090 CN 201320037090 U CN201320037090 U CN 201320037090U CN 203081300 U CN203081300 U CN 203081300U
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- star
- nozzle
- flow channel
- shaped
- runner
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Abstract
The utility model relates to a star-shaped nozzle used for drilling drill bits, and belongs to tool elements of stratigraphical drilling. The star-shaped nozzle comprises a nozzle body, wherein the positions of an inlet and an inner flow channel of the nozzle body are round flow channels. The star-shaped nozzle is characterized in that a flow channel at an outlet end of the nozzle body is a star-shaped flow channel, and the section of the star-shaped flow channel is in a polygonal star shape. The star-shaped nozzle is reasonable in structure and effective in use, the star-shaped nozzle still can achieve the same fogging degree with a round nozzle under low working pressure through reasonable set of parameters and the structure, and accordingly pressure loss of a system is reduced. Therefore, compared with an ordinary nozzle, the star-shaped nozzle has the advantages that a jet flow of the star-shaped nozzle can greatly improve operation efficiency of a jet flow at the shaft bottom, working footage and drilling speed of the drill bits are improved, and the service life of the drill bits is prolonged.
Description
Technical field
The utility model relates to a kind of star nozzle that is used for drill bit, belongs to the stratigraphical drilling tool elements.
Background technology
High-pressure spray aided drilling technology can increase substantially bit speed, present employed oil drilling plain nozzle, it all is round nozzle, though these nozzles have improved bit speed to a certain extent, but because its pressure distribution, the pressure decay, the restriction of factors such as active area is difficult to further increase substantially bit speed.The researcher has developed many new type nozzles both at home and abroad in recent years, mainly contain: 1. self-vibration pulse jet nozzle, this nozzle can increase substantially bit speed, but it produces very strong pressure oscillation, and then make drill bit produce strong vibrations, influence drilling life of bit, strong pressure oscillation is also very big to the life-span influence of slush pump, so the application of this nozzle is limited.2. cavitation pulse jet nozzle, this nozzle has been realized the cavitation jet drilling well, has strengthened the rock breaking capacity of drill bit, but similar to pulsing jet, also can produce very strong pressure oscillation, add the influence of cavitation effect, its life-span is difficult to guarantee, particularly can not be applied to diamond bit.3. dual-jet nozzle, this nozzle has increased a fuse in the inside of plain nozzle, the jet of mass flowing nozzle presents two states, is that the outside is a rotating jet at present mostly, the center is common jet, these two kinds of jets form multiple jet flow, can increase substantially jet rock-breaking drilling efficient, but because problems such as material and processing, its application life is short, complex structure, the cost height is so be difficult to widespread adoption.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of star nozzle that can overcome above-mentioned defective is provided, is used for the stratigraphical drilling drill bit.
The star nozzle that the utility model provides comprises nozzle, and the entrance of nozzle and inner flow passage are circular flow channel, it is characterized in that, the runner of nozzle exit end is the star runner, and the cross section of star runner is polygonal star.
The length of star runner is 0.3-5 times of polygonal star equivalent diameter, the length of circular flow channel is 0.5-18 times of polygonal star equivalent diameter, the 0.1-0.6 that the polygonal star equivalent diameter of the port of export is the entrance diameter times, the equivalent diameter of polygonal star is 1-12mm.
The cross section of described star runner is positive pentalpha, and the equivalent diameter of positive pentalpha is 7.8mm, is 0.27 times of entrance diameter.
The cross section of described star runner is positive four jiaos of stars, and the equivalent diameter of positive four jiaos of stars is 7.8mm, is 0.27 times of entrance diameter.
Changeover portion between circular flow channel and the star runner adopts ball transition or parabolic transition or straight transitions or spline curve transition.Fluency when by rational curve the raising jet being set reduces resistance.
Star nozzle provided by the utility model, rational in infrastructure, use effectively, be arranged so that by reasonable parameter, structure the star nozzle is under lower operating pressure, still can reach the fogging degree identical, thereby reduce the pressure consumption of system, thereby compare with plain nozzle with round nozzle, the star injection stream can increase substantially the operating efficiency of jet in the shaft bottom, improves drill bit work drilling depth, bit speed and application life.
Description of drawings
Fig. 1 is according to positive pentalpha structure of nozzle schematic diagram provided by the utility model;
Fig. 2 is the floor map according to positive pentalpha nozzle exit end provided by the utility model;
Fig. 3 is according to positive four jiaos of star structure of nozzle schematic diagrames provided by the utility model;
Fig. 4 is the floor map according to positive four jiaos of star nozzle exit ends provided by the utility model;
Among the figure: 1, circular flow channel; 2, star runner.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Embodiment 1:
As shown in Figure 1, the runner of star nozzle is made up of two parts, the circular flow channel 1 of entrance and the star runner 2 of the port of export.The cross section of star runner 2 is positive pentalpha, and the length of circular flow channel 1 is 9 times of positive pentalpha equivalent diameter, and the length of star runner 2 is 1.2 times of positive pentalpha equivalent diameter.
As shown in Figure 2, positive pentalpha equivalent diameter is 7.8mm, is 0.27 times of inlet diameter.
Embodiment 2:
As shown in Figure 3, the runner of star nozzle is made up of two parts, the circular flow channel 1 of entrance and the star runner 2 of the port of export.The cross section of star runner 2 is positive four jiaos of stars, and the length of circular flow channel 1 is 9 times of positive four jiaos of star equivalent diameters, and the length of star runner 2 is 1.2 times of positive four jiaos of star equivalent diameters.
As shown in Figure 4, positive four jiaos of star equivalent diameters are 7.8mm, are 0.27 times of inlet diameter.
Find under condition of high voltage through laboratory test, the jet pressure that flows out the star nozzle distributes different fully with plain nozzle, find that when carrying out the catalase experiment jet improves more than 15% than common jet the action effect of rock, and active area improves 30 ~ 40% than common jet.Under the similarity condition, the drilling depth that the drill bit of foundation star nozzle provided by the utility model has been installed can improve 15%, and drilling efficiency improves 10%, and bit life improves about 10%, remarkable in economical benefits.This nozzle can be installed on the boring tools such as diamond bit, rock bit.
Claims (5)
1. a star nozzle comprises nozzle, and the entrance of nozzle and inner flow passage are circular flow channel, it is characterized in that, the runner of nozzle exit end is the star runner, and the cross section of star runner is polygonal star.
2. star nozzle according to claim 1, it is characterized in that, the length of star runner is 0.3-5 times of polygonal star equivalent diameter, the length of circular flow channel is 0.5-18 times of polygonal star equivalent diameter, the 0.1-0.6 that the polygonal star equivalent diameter of the port of export is the entrance diameter times, the equivalent diameter of polygonal star is 1-12mm.
3. star nozzle according to claim 1 is characterized in that, the cross section of described star runner is positive pentalpha, and the equivalent diameter of positive pentalpha is 7.8mm, is 0.27 times of entrance diameter.
4. star nozzle according to claim 1 is characterized in that, the cross section of described star runner is positive four jiaos of stars, and the equivalent diameter of positive four jiaos of stars is 7.8mm, is 0.27 times of entrance diameter.
5. star nozzle according to claim 1 is characterized in that, the changeover portion between circular flow channel and the star runner adopts ball transition or parabolic transition or straight transitions or spline curve transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037090 CN203081300U (en) | 2013-01-23 | 2013-01-23 | Star-shaped nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037090 CN203081300U (en) | 2013-01-23 | 2013-01-23 | Star-shaped nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081300U true CN203081300U (en) | 2013-07-24 |
Family
ID=48827151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320037090 Expired - Fee Related CN203081300U (en) | 2013-01-23 | 2013-01-23 | Star-shaped nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685427A (en) * | 2017-11-09 | 2018-02-13 | 广东泰安模塑科技股份有限公司 | A kind of mould with special-shaped pouring gate set |
| CN112275463A (en) * | 2020-10-16 | 2021-01-29 | 哈尔滨工程大学 | Novel self-oscillation pulse cavitation nozzle |
-
2013
- 2013-01-23 CN CN 201320037090 patent/CN203081300U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685427A (en) * | 2017-11-09 | 2018-02-13 | 广东泰安模塑科技股份有限公司 | A kind of mould with special-shaped pouring gate set |
| CN112275463A (en) * | 2020-10-16 | 2021-01-29 | 哈尔滨工程大学 | Novel self-oscillation pulse cavitation nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20140123 |