Gas-liquid multiphase pump guide vane with cracks

Abstract

The utility model discloses a gas-liquid multiphase pump guide vane with blades provided with cracks, which comprises a hub, a plurality of blades are spirally arranged on the outer side wall of the hub at equal intervals, each blade is provided with two cracks, the width of each crack is not greater than 1 / 24 of the length of the blade, and a plurality of bubble breaking parts are respectively arranged on the crack surfaces of the blades. According to the gas-liquid multiphase pump guide vane with the blades provided with the cracks, the problems that bubbles are not evenly dispersed in the operation process of an existing gas-liquid multiphase pump, and liquid flowing can be affected by the bubbles are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fluid machinery and engineering equipment technology, and relates to a gas-liquid mixed delivery pump guide vane with split blades. BACKGROUND

[0002] The gas-liquid mixed delivery pump is mainly used for conveying liquid containing bubbles, which is very common in chemical industry, petroleum industry and mining industry. The gas-liquid mixed delivery pump can effectively handle the gas-liquid two-phase flow problem through its unique guide vane design. The guide vane is one of the core components of the gas-liquid mixed delivery pump, which guides the gas and liquid mixture at the outlet of the impeller to the pump outlet, and converts part of the fluid kinetic energy generated by the rotation of the impeller into static pressure energy.

[0003] The bubbles are not uniformly dispersed during the operation of the gas-liquid mixed delivery pump, and the existence of the bubbles can affect the liquid flow characteristics, compress the liquid passage area and deteriorate the performance of the pump. At present, many scholars have carried out research on the optimization of the guide vane of the gas-liquid mixed delivery pump, and have proposed many methods and measures to reduce the gas group of the gas-liquid mixed delivery pump. Therefore, the reasonable design of the guide vane shape for optimization design can inhibit the aggregation and growth of the bubbles to a certain extent, control the size distribution of the gas group, maintain the stability of the fluid and improve the performance of the gas-liquid mixed delivery pump. SUMMARY

[0004] The utility model discloses a gas-liquid mixed delivery pump guide vane with split blades, which solves the problem of uneven dispersion of bubbles during the operation of the existing gas-liquid mixed delivery pump and the influence of bubbles on liquid flow.

[0005] The utility model discloses a gas-liquid mixed delivery pump guide vane with split blades, which solves the problem of uneven dispersion of bubbles during the operation of the existing gas-liquid mixed delivery pump and the influence of bubbles on liquid flow.

[0006] The utility model discloses a gas-liquid mixed delivery pump guide vane with split blades, which solves the problem of uneven dispersion of bubbles during the operation of the existing gas-liquid mixed delivery pump and the influence of bubbles on liquid flow.

[0007] The two split positions are respectively 3 / 4 and 2 / 3 of the fluid inlet to the outlet along the corresponding blade.

[0008] The broken bubble piece is a triangular prism.

[0009] The edge length of the broken bubble piece is not greater than 1 / 18 of the blade width.

[0010] The distance between the blade end close to the hub and the adjacent broken bubble piece is not greater than 1 / 3 of the blade width, and the distance between the blade end away from the hub and the adjacent broken bubble piece is not greater than 1 / 4 of the blade width.

[0011] The distance between adjacent broken bubble pieces is not more than 1 / 3 of the width of the blade.

[0012] The height of the broken bubble piece is not more than 1 / 3 of the width of the blade slit.

[0013] The number of blades is 4-7.

[0014] The utility model discloses beneficial effect is:

[0015] The utility model discloses a blade has the gas -liquid mixed transport pump guide vane of fissure, set up fissure and broken bubble piece on the blade surface, can effectively strengthen the mixing effect of gas -liquid two -phase flow, prevent the gas group or gas pocket and gather on the pressure surface of blade, broken bubble piece can break the bubble, reduce the diameter of bubble, thereby improve the dispersity of gas in liquid, avoid the cavitation phenomenon caused by big bubble in liquid. This design can increase the flow velocity of fluid passage on the one hand, improve the turbulence intensity of flow, thereby broken big gas group, on the other hand, the gas group is further refined and broken when passing through the slit, effectively improve the uniformity of gas -liquid mixing, promote the performance and operating stability of gas -liquid mixed transport pump. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model discloses a blade has the gas -liquid mixed transport pump guide vane of fissure,

[0017] Figure 2 It is the front view of the utility model discloses a blade has the gas -liquid mixed transport pump guide vane of fissure,

[0018] Figure 3 It is the top view of the upper broken bubble piece of the utility model discloses a blade has the gas -liquid mixed transport pump guide vane of fissure.

[0019] In the drawing, 1. hub, 2. broken bubble piece, 3. blade. DETAILED DESCRIPTION

[0020] The utility model will be explained in detail below combining with the attached drawing and specific embodiment.

[0021] The blade has the gas -liquid mixed transport pump guide vane of fissure, as Figure 1 Shown, including hub 1, the outer side wall of hub 1 is spirally provided with several blades 3, several blades 3 are set at equal intervals, the number of blades 3 is 4-7, two slits are set on each blade 3, the width of each slit is not more than 1 / 24 of the length of blade 3, several broken bubble pieces 2 are respectively set on the slit surface of blade 3, and the dispersion of gas in liquid is improved by the breaking and dispersion of bubble, and the aggregation phenomenon of bubble is inhibited, so that the gas -liquid mixing performance is optimized.

[0022] The two slits are arranged at positions of 3 / 4 and 2 / 3 of the length of the corresponding blade 3 from the fluid inlet to the outlet.

[0023] As shown in Figures 2-3 The broken bubble piece 2 is a triangular prism. The length of the edge of the broken bubble piece 2 is not greater than 1 / 18 of the width of the blade 3.

[0024] The distance between the end of the blade 3 close to the hub 1 and the adjacent broken bubble piece 2 is not greater than 1 / 3 of the width of the blade 3, and the distance between the end of the blade 3 away from the hub 1 and the adjacent broken bubble piece 2 is not greater than 1 / 4 of the width of the blade 3.

[0025] The distance between the adjacent broken bubble pieces 2 is not greater than 1 / 3 of the width of the blade 3.

[0026] The height of the broken bubble piece 2 is not greater than 1 / 3 of the width of the slit of the blade 3.

[0027] The working principle is as follows:

[0028] The blade of the gas-liquid mixed conveying pump guide vane has a slit, when conveying gas-liquid two-phase flow, the blade 3 rotates clockwise at high speed, the special design of the guide vane blade 3 increases the flow rate of the fluid passage and improves the turbulence intensity of the flow, so that large air groups are broken. In the key area of the fluid passing through the blade 3, the flow rate of the liquid increases, the pressure decreases, and the gas forms bubbles in the liquid. These bubbles collide and merge in the subsequent flow, forming larger bubbles. As the fluid continues to flow, the slit of the blade 3 and the broken bubble piece 2 on its surface further break the large bubbles, optimize the operation stability of the gas-liquid mixed conveying pump, significantly improve the dispersion degree and contact area of the gas in the liquid, and optimize the performance of the gas-liquid mixed conveying pump.

[0029] The blade of the gas-liquid mixed conveying pump guide vane has a slit, by the slit design of the broken bubble piece 2 on the blade 3, such design helps to reduce the phenomenon of bubble aggregation, thereby reducing the risk of cavitation. The blade 3 with the slit design of the broken bubble piece 2 can effectively disperse the bubbles, increase the flow rate of the fluid passage, improve the turbulence intensity of the flow, thereby breaking large air groups; on the other hand, small air groups are further refined and broken due to the shearing action when passing through the slit, effectively improving the uniformity of gas-liquid mixing, and improving the performance and operation stability of the gas-liquid mixed conveying pump.

[0030] Embodiment 1

[0031] The blade of the gas-liquid mixed conveying pump guide vane has a slit, comprising a hub 1, a plurality of blades 3 are spirally arranged on the outer wall of the hub 1, the plurality of blades 3 are arranged at equal intervals, two slits are formed on each blade 3, the width of each slit is not greater than 1 / 24 of the length of the blade 3, and a plurality of broken bubble pieces 2 are arranged on the slit surface of the blade 3.

[0032] Example 2

[0033] This example is based on Example 1, and the positions of the two slits are respectively at 3 / 4 and 2 / 3 of the length of the blade 3 from the fluid inlet to the fluid outlet.

[0034] Example 3

[0035] This example is based on Example 2, and as shown in Figures 2-3 the broken bubble piece 2 is in the shape of a triangular prism. The length of the edge of the broken bubble piece 2 is not greater than 1 / 18 of the width of the blade 3.

[0036] Example 4

[0037] This example is based on Example 3, and the distance between the end of the blade 3 close to the hub 1 and the adjacent broken bubble piece 2 is not greater than 1 / 3 of the width of the blade 3, and the distance between the end of the blade 3 far from the hub 1 and the adjacent broken bubble piece 2 is not greater than 1 / 4 of the width of the blade 3.

[0038] Example 5

[0039] This example is based on Example 4, and the distance between the adjacent broken bubble pieces 2 is not greater than 1 / 3 of the width of the blade 3, and the height of the broken bubble piece 2 is not greater than 1 / 3 of the width of the slit of the blade 3.

[0040] Example 6

[0041] This example is based on Example 1, and the number of the blades 3 is 4-7.

Claims

1. A gas-liquid mixed flow pump inducer having a blade with a split, characterized by, The utility model provides a wheel hub (1) is provided with a plurality of blades (3) on the outer wall, and the blades (3) are arranged at equal intervals, and two slits are formed on each blade (3), the width of each slit is not more than 1 / 24 of the length of the blade (3), and a plurality of broken bubble pieces (2) are arranged on the slit surface of the blade (3).

2. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 1, characterized by, The two slits are arranged at 3 / 4 and 2 / 3 positions along the corresponding blade from the fluid inlet to the outlet.

3. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 2, characterized by, The broken bubble piece (2) is in the shape of a triangular prism.

4. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 3, characterized by, The length of the edge of the broken bubble piece (2) is not more than 1 / 18 of the width of the blade (3).

5. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 4, wherein The distance between the one end of the blade (3) close to the wheel hub (1) and the adjacent broken bubble piece (2) is not more than 1 / 3 of the width of the blade (3), and the distance between the one end of the blade (3) far from the wheel hub (1) and the adjacent broken bubble piece (2) is not more than 1 / 4 of the width of the blade (3).

6. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 5, wherein The distance between the adjacent broken bubble pieces (2) is not more than 1 / 3 of the width of the blade (3).

7. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 6, characterized by, The height of the broken bubble piece (2) is not more than 1 / 3 of the width of the slit of the blade (3).

8. The vane having a split of a gas-liquid mixed transport pump guide vane according to claim 1, wherein The number of the blades (3) is 4-7.

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