Gas lift pump
阅读说明：本技术 气举泵 (Gas lift pump ) 是由 瓦尔·艾哈迈德 于 2019-10-09 设计创作，主要内容包括：一种泵,包括：垂直延伸的导管,该垂直延伸的导管具有在下部和上部之间的中部,该中部的横截面积小于上部的横截面积；举升装置,包括端口阵列,所述阵列布置在下部的长度方向上,阵列的每个端口在下部设有末端并水平地远离末端延伸,使得工作流体被引向导管的中心；和喷射器,该喷射器在中部的顶端具有末端并垂直向下延伸,使得工作流体被垂直向上引导,喷射器的末端由圆柱形凹槽限定；围绕喷射器的环形腔室,其具有一定长度并通过一排孔与喷射器连通,该孔与过渡部分和中间部分的接合处相距一定距离。(A pump, comprising: a vertically extending conduit having a middle portion between the lower portion and the upper portion, the middle portion having a smaller cross-sectional area than the upper portion; a lifting device comprising an array of ports arranged in the length direction of the lower portion, each port of the array being provided with a tip at the lower portion and extending horizontally away from the tip such that the working fluid is directed towards the centre of the conduit; and an ejector having a tip at a top end of the middle portion and extending vertically downward such that the working fluid is directed vertically upward, the tip of the ejector being defined by a cylindrical groove; an annular chamber surrounding the injector, having a length and communicating with the injector through a row of holes spaced from the junction of the transition portion and the intermediate portion.)
1. A pump for use with a working fluid and a fluid material having a higher density than the working fluid, the pump comprising:
a vertically extending conduit which, in use, is immersed in the fluid material, the vertically extending conduit having a lower portion, an upper portion and a central portion between the lower and upper portions, the central portion having a cross-sectional area which is less than the cross-sectional area of the upper portion, the lower portion having a diameter D and the central portion having a diameter D;
a lifting device comprising:
an array of N2 ports, the array being arranged in the length direction of the lower portion, each port of the array having a diameter E, the ports also being provided with a tip at the lower portion and extending horizontally away from the tip such that the working fluid is directed towards the centre of the catheter; and
an ejector having a tip at a top end of the middle portion and extending vertically downward such that the working fluid is directed vertically upward, the tip of the ejector being defined by a cylindrical groove having a thickness B;
an annular chamber around the injector, having a length a, and communicating with the injector through a row of N1 holes, the N1 holes being at a distance F from the junction of the transition and intermediate portions, and each of the N1 holes having a diameter C; wherein
B, C, D, E and F are expressed in millimeters:
d is approximately between 25.4 and 203.2
B～0.521(D)0.296
01.918(D)0.343
E～0.521(D)0.296
F～0.321D-3.41。
2. The pump of claim 1, wherein the magnitudes of D, A, B, C, D, E, F, N1, and N2 are determined according to any one of the following configurations:
3. Use of a pump according to claim 2, wherein air is used as the working fluid and water is used as the fluid material.
4. Use of a pump according to claim 3, wherein the combination of air flow, water flow and configuration may fall substantially into any combination of:
Technical Field
The invention relates to the field of gas lift pumps.
Background
It is known to move fluid material (liquid or solid-liquid mixture) through a vertical pipe by introducing compressed air in the lower part of the vertical pipe partially immersed in the material.
Disclosure of Invention
One aspect of the present invention provides a pump for use with a working fluid and a fluid material having a higher density than the working fluid, the pump comprising a vertically extending conduit and a lifting device.
In use, a vertically extending conduit is immersed in the fluid material, the vertically extending conduit having a lower portion, an upper portion and a central portion between the lower and upper portions, the central portion having a cross-sectional area less than the cross-sectional area of the upper portion, the lower portion having a diameter D and the central portion having a diameter D.
The lift device includes an array of N2 ports, an injector, and a ring injector.
The array is arranged in the length direction of the lower part, each port of the array having a diameter E, the port further being provided with a tip at the lower part and extending horizontally away from the tip, such that the working fluid is directed towards the centre of the catheter.
The ejector has a tip at the top end of the middle portion and extends vertically downward so that the working fluid is directed vertically upward, the tip of the ejector being defined by a cylindrical groove having a thickness B.
The annular chamber surrounding the injector has a length a and communicates with the injector through a row of N1 holes, the N1 holes are at a distance F from the junction of the transition and intermediate portions, and each of the N1 holes has a diameter C.
If B, C, D, E and F are expressed in millimeters:
d is approximately between 25.4 and 203.2
B～0.521(D)0.296
01.918(D)0.343
E～0.521(D)0.296
F～0.321D-3.41
According to another aspect of the invention, the magnitudes of D, A, B, C, D, E, F, N1, and N2 may be determined according to any one of the following configurations:
size of
D/mm
A/mm
B/mm
C/mm
d/mm
E/mm
F/mm
N1/mm
N2/mm
1
25.4
20.32
1.5
15.24
15.24
1.5
6.35
12
108
2
50.8
22.098
1.5
38.1
38.1
1.5
8.128
12
378
3
101.6
68.072
2
90.2
90.2
2
34.036
10
038
4
152.4
101.6
2
147.1
147.1
2
44.45
15
1480
5
203.2
142.21
3
12.7
194.2
3
61.15
14
1280
According to another aspect of the invention, the pump may use air as the working fluid and water as the fluid material.
According to another aspect of the invention, in use, the combination of airflow, water flow and configuration may fall substantially into any combination of:
combination of
Air flow (M)3/s)
Water flow (M)3/s)
1
.00023-.00027
.0002-.004
2
.0002-.0018
.0005-.0007
3
.00115-.01
.0025-.0037
4
.006-.025
.006-.017
5
.008-.05
.011-.015
The advantages, features and characteristics of the present invention will become apparent upon reading the following detailed description and drawings, which are briefly described below.
Drawings
FIG. 1 is a cross-section of a pump constructed in accordance with an exemplary embodiment of the invention;
fig. 2 is a cross-section along L-L of fig. 1.
FIG. 3 is a cross-section of a pump constructed in accordance with another exemplary embodiment of the invention;
FIG. 4 illustrates the inflation performance of a pump according to an embodiment of the present invention; and
FIG. 5 illustrates the pumping performance of a pump according to another embodiment of the present invention.
Detailed Description
A pump 20 according to an exemplary embodiment of the present invention is shown in fig. 1 and 2.
The pump 20 is used with a working fluid and a fluid material (neither shown) having a higher density than the working fluid, and will be considered to comprise an annular conduit 22 and a lifting device 24.
The conduit 22 extends vertically in use and has: a circular inlet 26; a cylindrical lower portion 28 communicating with the inlet and having a diameter D smaller than the inlet; a frustoconical transition portion 30 communicating with the lower portion and tapering as it extends at an angle from the lower portion; the intermediate portion 32 communicates with the transition portion 30 and has a diameter d; the bridge portion 34 communicates with the middle portion 32 and has a larger diameter than the middle portion 32; and an upper portion 36.
The diameters of the inlet 26 and the upper portion 36 are understood to be of a size to accommodate conventional piping having an inner diameter D, not shown.
The lift device 24 includes an array 38 of ports 40 and an injector 42.
Each port of the array has a tip 44 in the lower portion 28, of diameter E and extending horizontally away from the tip 44 so that the working fluid is directed towards the centre of the conduit (not shown). The total number of ports 40 is N2.
The injector 42, which is disposed at the junction of the mid portion 32 and the bridge portion 34, has an annular tip of radial thickness B that extends vertically downward a distance a to direct the working fluid vertically upward.
An annular chamber 46 surrounds the injector 42 and communicates therewith through a row of holes 48, each having a diameter. A row of holes 48 is spaced a distance F from the junction of the transition section 30 and the intermediate section 32. The total number of holes 48 is N1.
Another annular chamber 50 surrounds lower portion 28 and communicates with port 40. Those skilled in the art will readily appreciate that, in use, a gas, such as air, is introduced into the chambers 46, 50 and thence into the fluid material by the lifting apparatus 24.
As a feature of the pump, if B, C, D, E and F are expressed in millimeters:
d is approximately between 25.4 and 203.2
B～0.521(D)0.296
01.918(D)0.343
E～0.521(D)0.296
F～0.321D-3.41
More specifically, the magnitudes of D, a, B, C, D, E, F, N1, and N2 may be determined according to any one of the following:
TABLE 1
Size of
D/mm
A/mm
B/mm
C/mm
d/mm
E/mm
F/mm
N1/mm
N2/mm
1
25.4
20.3
1.5
15.2
15.2
1.5
6.35
12
108
2
50.8
22.1
1.5
38.1
38.1
1.5
8.13
12
378
3
101
68.1
2
90.2
90.2
2
34.0
10
038
4
152
101
2
147
147
2
44.5
15
1480
5
203
142
3
12.7
194
3
61.2
14
1280
The pump shown in fig. 1 and 2 is to be understood as being readily configurable by 3D printing using conventional processes. However, this is not essential and the pump can also be easily constructed by conventional machining, as shown in fig. 3.
Five versions of the pump of the present invention were constructed according to each configuration.
These five pumps were tested and the results are listed in table 2 below:
TABLE 2
For more certainty, in table 2, "immersion rate" is the ratio between the liquid-filled portion of the riser and the total tube length, and "immersion amount" is the liquid-filled portion of the tube. Those skilled in the art will readily appreciate that these pumps are capable of pumping relatively large volumes of water relatively efficiently.
The inflation performance of the 101.6mm pump was tested as shown in figure 4. The test involved pumping water into the tank in a cyclic manner. Three tests were performed. In each test, the water in the tank was exposed to the atmosphere for a sufficient time to bring the oxygen concentration to equilibrium at 1 mg/L. In each test, a constant volume of gas was forced to flow through the pump. In the first test, 75% of the flow was through the lower array and 25% was through the upper array. In the second test, the flow was split at 50: 50; in the third test, 25% of the flow was through the lower array and 75% was through the upper array. Fig. 4 shows that oxygenation is increased by forcing more flow through the lower array.
As shown in fig. 5, the standard aeration efficiency of a 50.8mm pump was tested. Three tests were again performed, each involving pumping water into the tank in a cyclic manner. In each test, the water in the tank was exposed to the atmosphere for a sufficient time to bring the oxygen concentration to equilibrium at 1 mg/L. In each test, a constant volume of gas was forced to flow through the pump. In the first test, 75% of the flow was directed through the lower array and 25% through the upper array; in the second test, the flow was split at 50: 50; in the third test, 25% of the flow was through the lower array and 75% was through the upper array. Figure 5 shows that the highest amount of oxygen transferred to the water per kW of blower power was obtained in the 75% radial flow test. As the water reaches saturation, the amount of oxygen transferred to the water decreases over time.
From the foregoing, it is intended that the invention be construed as limited only by the claims appended hereto.
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