CN103161750A - Novel desanding pump - Google Patents
Novel desanding pump Download PDFInfo
- Publication number
- CN103161750A CN103161750A CN2011104225852A CN201110422585A CN103161750A CN 103161750 A CN103161750 A CN 103161750A CN 2011104225852 A CN2011104225852 A CN 2011104225852A CN 201110422585 A CN201110422585 A CN 201110422585A CN 103161750 A CN103161750 A CN 103161750A
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- pump
- impeller
- cover
- shaft
- pump cover
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Abstract
Provided is a novel desanding pump. The invention relates to the desanding pump used for pumping oil drilling fluid. The novel desanding pump aims at solving the problems of easy abrasion, low efficiency and high energy consumption of an exiting desanding pump. The novel desanding pump comprises a pump body, a pump cover, an impeller, a pump shaft and a bracket, wherein both the pump cover and the pump body are connected together on the bracket, and a pumping chamber is formed between the pump cover and the pump body. The pump shaft is connected on the bracket. The rear end of the pump shaft is connected with a power plant, and the front end of the pump shaft penetrates through the pump cover into the pumping chamber. The impeller is arranged inside the pumping chamber, and is connected with the front end of the pump shaft. The impeller synchronously rotates with the pump shaft. A sealing pair is arranged between the pump shaft and the pump cover. New material formulation of the impeller and the pump cover are designed. Wear-resisting property of the pump cover and scouring effects of medium coming from the impeller to the pump are improved, and service life of the pump is prolonged by changing the material formulations of the impeller and the pump cover and a vane molded line of the impeller.
Description
Technical field
The present invention relates to a kind of petroleum drilling fluid pumping device, particularly relate to a kind of sand pump that removes be used to pumping petroleum drilling fluid.
Background technique
In prior art, the premature wear problem of pump, mainly caused by two aspects: be at first in the design of pump, the medium understanding that pump is pumped is not enough, and in fact our any medium can not be all the field that pure single liquid composition, particularly this programme relates to, its medium is all that the solid-liquid bifurcation exists, and solid-state and liquid running orbit is different, so just causes the collision aggravation to the pump wall, has so just accelerated the wearing and tearing of pump.Secondly, be the material problem of pump, not in place to the wear resistance consideration, that is to say that the material of former pump is not wear-resisting.The premature wear of sealing is unreasonable and material selection sealing pair is improper and cause mainly due to the dynamics of Packing spring.The efficient of pump is low, high to be mainly that the design theory of pump is selected unreasonable for energy consumption, causes medium mutual collision in running to increase, and reduced the conversion of energy, and made the Efficiency Decreasing of pump, and energy consumption increases.The medium proportion that existing equipment is pumped is for being not more than 1.4, and medium is very serious to the wearing and tearing of impeller and pump cover, causes the life-span of pump shorter.In summary it can be seen, in use mainly there is following problem in the existing sand pump that removes: premature wear; Due to former in the Design and manufacture process wear resistance understanding to pump not in place, and wearing and tearing of not removing to consider the flow passage components of pump; The sealing earlier period damage of pump because the sealing of using in the past is of all kinds, is not but all considered the particularity of institute's fed sheet of a media and is made the sealing premature wear; The efficient of pump is low, and energy consumption is high.
Summary of the invention
The objective of the invention is to solve existing except sand pump easy to wear, the problem that efficient is low and energy consumption is high, provide a kind of novel except sand pump, should be except sand pump by improving impeller and the material prescription of pump cover and the vane type line of impeller, increased the wear-resisting property of pump cover and from impeller medium out to the washing away of pump, increased the working life of pump.
For achieving the above object, the technical solution used in the present invention is: a kind of novel except sand pump, it is characterized in that comprising the pump housing, pump cover, impeller, pump shaft and carriage, wherein pump cover and the pump housing are connected to together on carriage and form pumping chamber in the middle of pump cover and the pump housings, pump shaft is connected on carriage, the rear end connecting power device of pump shaft, front end passes pump cover and enters into pumping chamber, impeller be placed in pumping chamber and the front end that is connected to pump shaft with the pump shaft synchronous rotary.
In such scheme, be provided with sealing pair between described pump shaft and pump cover, described sealing pair is made by the Hardmetal materials of a monoblock.
In such scheme, impeller comprises the axis that is connected with pump shaft and is connected to blade on the axis cylindrical, and the shape of described blade is that the streamline shape according to the two phase flow medium designs.
In such scheme, in the making material of described impeller, comprise and account for the elemental composition that the impeller gross weight is following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.
In such scheme, in the making material of described pump cover, comprise and account for the elemental composition that the pump cover gross weight is following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.
Can find out from every technical characteristics of the invention described above, its advantage is: should be except sand pump by improving impeller and the material prescription of pump cover and the vane type line of impeller, increased the wear-resisting property of pump cover and from impeller medium out to the washing away of pump, increased the working life of pump; The hardness of the material after improvement significantly increases, and has so just increased the wear resistance of part; After tested, material property of the present invention and existing material property compare, its HRC 〉=55, and HBW 〉=600 are far superior to existing material property except sand pump; Take into full account on the shape of runner and blade shape and reduce particle to the impact of runner wall and blade, to reach the requirement that reduces the wearing and tearing of pump cover; Adopt two phase flow theory to be optimized design to the blade of pump, improve the running orbit of the medium of pumping, reduce medium to collision and the wearing and tearing of pump wall; That is to say, design of the present invention has solved prior art easy to wear except sand pump effectively, and efficient is hanged down and the high problem of energy consumption.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is pump cover structure schematic diagram of the present invention;
Fig. 3 is blade wheel structure schematic diagram of the present invention;
Fig. 4 is the schematic side view of this Fig. 3;
Fig. 5 is the present invention's sealing pair used;
Wherein reference character 1 is that the pump housing 2 is that pump cover 3 is impellers
The 4th, pump shaft 5 is that carriage 6 is that pumping chamber 7 is sealing pairs
The 8th, axis 9 is blades.
Embodiment
Also the present invention is described further by reference to the accompanying drawings below by specific embodiment:
As Figure 1-Figure 4: the present invention includes the pump housing, pump cover, impeller, pump shaft and carriage, wherein pump cover and the pump housing are connected to together on carriage and form pumping chamber in the middle of pump cover and the pump housings, pump shaft is connected on carriage, the rear end connecting power device of pump shaft, front end passes pump cover and enters into pumping chamber, impeller be placed in pumping chamber and the front end that is connected to pump shaft with the pump shaft synchronous rotary, wherein the blade of impeller will be the pressure energy of fed sheet of a media by the kinetic transformation of pump shaft transmission, thereby reach the purpose of conveying.
In the scheme of previous step, be provided with sealing pair between described pump shaft and pump cover, sealing pair is made by the Hardmetal materials of a monoblock.The sealing fixed ring of prior art is the sealing pair of bag cemented carbide sealing material in other metals, and fixed ring is that two-part form, and they have manufacturing and assembly error, reduce reliability and the life-span of sealing, in addition, cemented carbide is less, the wear-resisting time less that gets has also affected the life-span that seals.And the fixed ring of sealing of the present invention or sealing pair are comprised of the cemented carbide of a monoblock, accuracy of manufacturing can be fully guaranteed, and the wear-resisting time is also longer, and the size of sealing pair is than original increasing, the also change of its shape has fully guaranteed reliability and life-span.
The present invention adopts two phase flow theory to be optimized design to the blade of pump.
According to our design parameter: flow Q=240m
3/ h; Lift H=36m, revolution n=1450 rev/min; Designing and calculating is as follows:
The specific speed n of pump
s=3.65n (Q)
1/2=93
⒈ impeller inlet diameter D
0:
1. conventional design: according to the K that tables look-up
v0=0.15
V
0=K
v0(2gh)
1/2=3.9857m/s
D
0=(4Q/3.14V
0)
1/2?=0.146m
2. be calculated as follows according to two phase flow theory:
Get K
v0=0.11
V
0=K
v0(2gh)
1/2=2.923m/s
D
0=(4Q/3.14V
0)
1/2?=0.1704m
⒉ impeller outer diameter D
2:
1. conventional design: according to the K that tables look-up
u2=1.15
U
2=K
u2(2gh)
1/2=30.557m/s
D
2=60?U
2/3.14n=0.4025m
2. be calculated as follows according to two phase flow theory:
Get K
u2=0.9
U
2=K
u2(2gh)
1/2=23.91m/s
D
2=60?U
2/3.14n=0.315m
⒊ impeller outlet width b
2:
1. conventional design: according to the K that tables look-up
m2=0.115
V
m2=K
m2(2gh)
1/2=3.0557m/s
b
2=Q/3.14 D
2nψ
2V
m2=0.02345m (annotates: ψ
2=0.94)
2. be calculated as follows according to two phase flow theory:
Get K
m2=0.05
V
m2=K
m2(2gh)
1/2=1.328m/s
b
2=Q/3.14 D
2nψ
2V
m2=0.054m (annotates: ψ
2=0.94)
According to above calculating, drawn the size and dimension of blade.Improve the running orbit of the medium of pumping, reduced medium to collision and the wearing and tearing of pump wall.
For the existing sand pump problem easy to wear of removing, the present invention has carried out further improvement with the material of pump cover and impeller, and is existing except sand pump, and in its impeller material, constituent content is generally to adopt: C:0.32～0.4; Si:0.5; Mn:0.9; P≤0.03; S≤0.03; Cr≤0.25; Ni≤0.25.In the pump cover material, constituent content is generally to adopt: C:0.32～0.4; Si:0.17～0.37; Mn:0.5～0.8; P≤0.03; S≤0.03; Cr≤0.25; Ni≤0.25.After its Performance Detection be: HRC:41; HBW:415.And for the present invention, in the making material of its impeller, comprise and account for the elemental composition that the impeller gross weight is following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.In the making material of pump cover, comprise and account for the elemental composition that the pump cover gross weight is following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.Its material property is after tested: HRC 〉=55, HBW 〉=600 are far superior to existing material property except sand pump.
Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
Claims (5)
- One kind novel except sand pump, it is characterized in that comprising the pump housing (1), pump cover (2), impeller (3), pump shaft (4) and carriage (5), wherein pump cover (2) and the pump housing (1) are connected to together carriage (5) upward and form pumping chamber (6) in the middle of pump cover (2) and the pump housings (1), pump shaft (4) is connected on carriage (5), the rear end connecting power device of pump shaft (4), front end passes pump cover (2) and enters into pumping chamber (6), impeller (3) be placed in pumping chamber (6) and the front end that is connected to pump shaft (4) with pump shaft (4) synchronous rotary.
- 2. a kind of novel sand pump that removes according to claim 1, is characterized in that being provided with sealing pair (7) between described pump shaft (4) and pump cover (2), and described sealing pair (7) is made by the Hardmetal materials of a monoblock.
- 3. according to claim 1 and 2 a kind of novel except sand pump, it is characterized in that impeller (3) comprises the axis (8) that is connected with pump shaft (4) and is connected to blade (9) on axis (8) cylindrical, the shape of described blade (9) is that the streamline shape according to the two phase flow medium designs.
- 4. according to claim 3 a kind of novel except sand pump, it is characterized in that in the making material of described impeller (3), comprise that to account for impeller (3) gross weight be the elemental composition of following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.
- 5. according to claim 4 a kind of novel except sand pump, it is characterized in that in the making material of described pump cover (2), comprise that to account for pump cover (2) gross weight be the elemental composition of following weight percentage: C:2.4～3%; Si:1.5～2%; Mn≤2%; P≤0.1%; S≤0.06%; Mo≤1.5%; Cr:7～11%; Cu≤1.2%; Ni≤1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104225852A CN103161750A (en) | 2011-12-16 | 2011-12-16 | Novel desanding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104225852A CN103161750A (en) | 2011-12-16 | 2011-12-16 | Novel desanding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103161750A true CN103161750A (en) | 2013-06-19 |
Family
ID=48585166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104225852A Pending CN103161750A (en) | 2011-12-16 | 2011-12-16 | Novel desanding pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103161750A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075274U (en) * | 1990-05-08 | 1991-04-17 | 煤炭科学研究总院唐山分院 | Cylinder shaped variable angle spiral type vane for slag slurry pump |
| CN2086329U (en) * | 1991-03-27 | 1991-10-09 | 中原石油勘探局钻井工艺研究院 | Centrifugal sand pump |
| CN1811195A (en) * | 2005-12-31 | 2006-08-02 | 朱玉才 | Determination of profile parameters of vane in efficient two-phase flow centrifugal pump |
| CN1987116A (en) * | 2005-12-23 | 2007-06-27 | 天津市元亨潜水泵厂 | Submersible pump blade |
| US7458765B2 (en) * | 2005-09-23 | 2008-12-02 | Fraunhofer Usa | Diamond hard coating of ferrous substrates |
| CN101368574A (en) * | 2008-10-15 | 2009-02-18 | 许洪元 | Design method of two phase flow pump impeller |
| CN101418411A (en) * | 2007-10-25 | 2009-04-29 | 浙江振兴石化机械有限公司 | Low nickel cast iron and preparation method thereof and use thereof in impeller |
| CN201661472U (en) * | 2010-02-09 | 2010-12-01 | 王友宏 | Single-stage single-suction centrifugal pump |
| CN202707567U (en) * | 2011-12-16 | 2013-01-30 | 刘华光 | Novel desanding pump |
-
2011
- 2011-12-16 CN CN2011104225852A patent/CN103161750A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075274U (en) * | 1990-05-08 | 1991-04-17 | 煤炭科学研究总院唐山分院 | Cylinder shaped variable angle spiral type vane for slag slurry pump |
| CN2086329U (en) * | 1991-03-27 | 1991-10-09 | 中原石油勘探局钻井工艺研究院 | Centrifugal sand pump |
| US7458765B2 (en) * | 2005-09-23 | 2008-12-02 | Fraunhofer Usa | Diamond hard coating of ferrous substrates |
| CN1987116A (en) * | 2005-12-23 | 2007-06-27 | 天津市元亨潜水泵厂 | Submersible pump blade |
| CN1811195A (en) * | 2005-12-31 | 2006-08-02 | 朱玉才 | Determination of profile parameters of vane in efficient two-phase flow centrifugal pump |
| CN101418411A (en) * | 2007-10-25 | 2009-04-29 | 浙江振兴石化机械有限公司 | Low nickel cast iron and preparation method thereof and use thereof in impeller |
| CN101368574A (en) * | 2008-10-15 | 2009-02-18 | 许洪元 | Design method of two phase flow pump impeller |
| CN201661472U (en) * | 2010-02-09 | 2010-12-01 | 王友宏 | Single-stage single-suction centrifugal pump |
| CN202707567U (en) * | 2011-12-16 | 2013-01-30 | 刘华光 | Novel desanding pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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Application publication date: 20130619 |