阅读说明：本技术 多相流体混合输送泵 (Multiphase fluid mixing and conveying pump ) 是由 刘凤伟 吴新林 于 2020-07-23 设计创作，主要内容包括：本发明公开了一种多相流体混合输送泵,包括泵体,所述泵体上设置主进液口及多相液出口,所述泵体内依序设置分流器及分配器,所述分流器上设置多个分流器流道；所述分配器上设置多个朝向中心的分配器流道,所述分配器外侧为扩散区,所述扩散区处设置朝向分配器流道的喷嘴,所述喷嘴通过进液口与所述分流器上的分流器流道出口相连,所述分配器上设置多相进口；所述泵体内设置叶轮组,所述叶轮组包括用于将主进液口进入的液体压入所述分流器处分流器流道的第一级叶轮,以及用于将混合后的多相流体送至多相液出口的第二级叶轮,其中,所述叶轮组和转轴连接。本发明可以使得多相流精细化均匀混合,促进化学反应速度和效率。(The invention discloses a multiphase fluid mixing and conveying pump which comprises a pump body, wherein a main liquid inlet and a multiphase liquid outlet are formed in the pump body, a flow divider and a distributor are sequentially arranged in the pump body, and a plurality of flow divider runners are formed in the flow divider; the distributor is provided with a plurality of distributor channels facing the center, the outer side of the distributor is provided with a diffusion area, the diffusion area is provided with a nozzle facing the distributor channels, the nozzle is connected with an outlet of the distributor channel on the distributor through a liquid inlet, and the distributor is provided with a multi-phase inlet; an impeller group is arranged in the pump body, the impeller group comprises a first-stage impeller and a second-stage impeller, the first-stage impeller is used for pressing liquid entering from a main liquid inlet into a flow passage of the splitter at the splitter, the second-stage impeller is used for conveying mixed multiphase fluid to a multiphase liquid outlet, and the impeller group is connected with the rotating shaft. The invention can make multiphase flow fine and uniformly mixed and promote chemical reaction speed and efficiency.)

1. A multiphase fluid mixing and conveying pump comprises a pump body (1), wherein a main liquid inlet (11) and a multiphase liquid outlet (12) are formed in the pump body (1), and is characterized in that a flow divider (2) and a distributor (3) are sequentially arranged in the pump body (1), and a plurality of flow divider runners (21) are formed in the flow divider (2);

the distributor (3) is provided with a plurality of distributor flow channels (31) facing the center, the outer side of the distributor (3) is provided with a diffusion area (32), the diffusion area (32) is provided with a nozzle (33) facing the distributor flow channels, the nozzle (33) is connected with an outlet of the distributor flow channel (21) on the distributor (2) through a liquid inlet (34), and the distributor (3) is provided with a multi-phase inlet;

an impeller group is arranged in the pump body (1), the impeller group comprises a first-stage impeller (41) used for pressing liquid entering from a main liquid inlet into a flow passage of the splitter at the splitter and a second-stage impeller (42) used for conveying mixed multiphase fluid to a multiphase fluid outlet, and the impeller group is connected with the rotating shaft (5).

2. The multiphase fluid mixing delivery pump of claim 1, wherein: the multi-phase inlet includes a solid phase inlet (35a), a liquid phase inlet (35b), and a gas phase inlet (35 c).

3. The multiphase fluid mixing delivery pump of claim 1, wherein: one side of the pump body (1) is provided with a bearing box (6), and one side of the rotating shaft (5) departing from the impeller set is connected behind a bearing (61) in the bearing box (6) and penetrates out of the bearing box (6).

4. The multiphase fluid mixing delivery pump of claim 1, wherein: the pump body (1) is provided with a supporting component.

5. The multiphase fluid mixing delivery pump of claim 2, wherein: the gas phase inlet (35c) is disposed opposite the liquid phase inlet (35b), and the solid phase inlet (35a) is located between the gas phase inlet (35c) and the liquid phase inlet (35 b).

6. The multiphase fluid mixing delivery pump of claim 1, wherein: the second-stage impeller (42) comprises a connecting part (42a), a rear cover plate (42b) is arranged on the connecting part (42a), the rear cover plate (42b) is connected with a front cover plate (42c), and an overflowing gap (40) is formed between the front cover plate (42c) and the rear cover plate (42 b).

7. The multiphase fluid mixing delivery pump of claim 6, wherein: the front cover plate (42c) is provided with a front blade (421), and the rear cover plate (42b) is provided with a rear blade (422).

Technical Field

The invention relates to a delivery pump, in particular to a multiphase fluid mixing delivery pump.

Background

In nature, the shape of objects is diverse, most commonly solid, liquid and gaseous. Homogeneous substances with the same composition and the same physical and chemical properties in a certain system are called phases. The partially homogeneous solids, liquids and gases are therefore referred to as the solid, liquid and gas phases, respectively. The flow of solids, liquids and gases mixed together is known as a multiphase flow. Multiphase flow is very complex and transporting multiphase fluids has been a difficult problem. The fields of petroleum, petrochemical industry, power, metallurgy, water treatment and the like often meet the process requirements for treating multiphase flow, when a pump is used as important conveying and pressurizing equipment for fluid to treat multiphase fluid, cavitation can occur during the treatment of liquid-gas two-phase fluid, vibration and noise occur, when the gas content is about 10%, the flow is extremely unstable, even cutoff occurs, and the equipment cannot operate. When liquid-solid two-phase fluid is treated, solid particles easily block the impeller, so that the fluid cannot pass through the impeller and the impeller is impacted to cause material damage. Handling three phase fluids can be more difficult. Meanwhile, multiphase fluids are widely used in various industries and fields such as petroleum, petrochemical industry, energy, metallurgy, light industry, environmental protection and the like, for example, crude oil contains oil, water and air sand, natural gas contains liquid and gas, chemical reaction equipment, a rectifying tower and a fluidized bed, a pressurized dissolved air flotation system in the environmental protection industry, high-concentration ozone water or oxygen-enriched water preparation, chemical reaction of multiphase fluid mixing in the chemical industry and the like all relate to the treatment of two-phase, three-phase or multiphase fluids.

Disclosure of Invention

The invention aims to solve the problems and provides a multiphase fluid mixing and conveying pump, so that multiphase flow is refined and uniformly mixed.

In order to achieve the purpose, the invention adopts the following technical scheme: a multiphase fluid mixing and conveying pump comprises a pump body, wherein a main liquid inlet and a multiphase liquid outlet are formed in the pump body, a flow divider and a distributor are sequentially arranged in the pump body, and a plurality of flow divider runners are formed in the flow divider;

the distributor is provided with a plurality of distributor channels facing the center, the outer side of the distributor is provided with a diffusion area, the diffusion area is provided with a nozzle facing the distributor channels, the nozzle is connected with an outlet of the distributor channel on the distributor through a liquid inlet, and the distributor is provided with a multi-phase inlet;

an impeller group is arranged in the pump body, the impeller group comprises a first-stage impeller and a second-stage impeller, the first-stage impeller is used for pressing liquid entering from a main liquid inlet into a flow passage of the splitter at the splitter, the second-stage impeller is used for conveying mixed multiphase fluid to a multiphase liquid outlet, and the impeller group is connected with the rotating shaft.

Further: the multi-phase inlet comprises a solid phase inlet, a liquid phase inlet and a gas phase inlet.

Further: one side of the pump body is provided with a bearing box, and one side of the rotating shaft, which deviates from the impeller set, is connected behind a bearing in the bearing box and penetrates out of the bearing box.

Further: the pump body is provided with a supporting component.

Further: the gas phase inlet and the liquid phase inlet are arranged oppositely, and the solid phase inlet is positioned between the gas phase inlet and the liquid phase inlet.

Further: the second-stage impeller comprises a connecting part, a rear cover plate is arranged on the connecting part and connected with a front cover plate, and an overflowing gap is formed between the front cover plate and the rear cover plate.

Further: the front cover plate is provided with front blades, and the rear cover plate is provided with rear blades.

Compared with the prior art, the invention has the following beneficial effects: the invention can make multiphase flow fine and uniformly mixed and promote chemical reaction speed and efficiency.

Drawings

Fig. 1 is an exploded view of a multiphase fluid mixing and delivering pump.

Fig. 2 is a sectional view of the multiphase fluid mixing delivery pump.

Fig. 3 is a view showing the structure of the flow divider.

Fig. 4 is a view showing the structure of the dispenser.

Fig. 5 is a view showing the structure of the second-stage impeller.

Detailed Description

Referring to fig. 1 to 5, a multiphase fluid mixing and delivering pump includes a pump body 1, a main liquid inlet 11 and a multiphase liquid outlet 12 are disposed on the pump body 1, a flow divider 2 and a distributor 3 are sequentially disposed in the pump body 1, and a plurality of flow divider channels 21 are disposed on the flow divider 2. The liquid is pressurized by the first stage impeller and flows out into a splitter having a plurality of flow channels (splitter flow channels 21).

The distributor 3 is provided with a plurality of distributor runners 31 facing the center, the outer side of the distributor 3 is provided with a diffusion area 32, the diffusion area 32 is provided with a nozzle 33 facing the distributor runners, the nozzle 33 is connected with the outlet of the distributor runner 21 on the distributor 2 through a liquid inlet 34, and the distributor 3 is provided with a multi-phase inlet. The multiple flow channels of the flow divider are communicated with the liquid inlets of the corresponding flow channels of the distributor, the corresponding flow channels on the distributor extend towards the center, the liquid forms high-speed liquid flow under the action of the nozzle, negative pressure is formed around the diffusion area in the flowing process of the high-speed liquid flow, and the diffusion area is communicated with the multiphase inlet.

An impeller group is arranged in the pump body 1, and comprises a first-stage impeller 41 used for pressing liquid entering from a main liquid inlet into a flow passage of the splitter at the splitter and a second-stage impeller 42 used for conveying mixed multiphase fluid to a multiphase liquid outlet, wherein the impeller group is connected with the rotating shaft 5.

In this embodiment, the multi-phase inlet includes a solid phase inlet 35a, a liquid phase inlet 35b, and a gas phase inlet 35 c.

In this embodiment, a bearing box 6 is arranged on one side of the pump body 1, and one side of the rotating shaft 5, which is far away from the impeller assembly, is connected to a bearing 61 in the bearing box 6 and then penetrates out of the bearing box 6.

In this embodiment, the pump body 1 is provided with a support member, specifically, the support member includes a base 71 and a support bracket 72. The supporting effect is better.

In this embodiment, the gas inlet 35c is disposed opposite to the liquid inlet 35b, and the solid inlet 35a is disposed between the gas inlet 35c and the liquid inlet 35 b.

In this embodiment, the second-stage impeller 42 includes a connecting portion 42a for connecting the rotating shaft 5, a rear cover plate 42b is disposed on the connecting portion 42a, the rear cover plate 42b is connected to a front cover plate 42c, and an overflow gap 40 is formed between the front cover plate 42c and the rear cover plate 42 b.

In this embodiment, the front cover plate 42c is provided with a front blade 421, and the rear cover plate 42b is provided with a rear blade 422.

The first-stage impeller sucks main liquid, the liquid is pressurized by the first-stage impeller, flows into a flow divider flow channel, flows from an outlet of the flow divider flow channel to a liquid inlet of a distributor, is sprayed (flowed) out from a nozzle, and then respectively enters a plurality of flow channels (distributor flow channels) after flowing out, the liquid forms high-speed liquid flow under the action of the nozzle, and negative pressure is formed around an inlet (a diffusion area) of the flow channel (the distributor flow channel) in the flowing process of the high-speed liquid flow, so that a medium at a multi-phase inlet can be sucked into the pump and mixed with a first medium (the main liquid) to form multi-phase flow (for example, two phases or three. The mixing is carried out in a plurality of divided runners (distributor runners), the multiphase flow is finely distributed in the distribution type runner under the action of the liquid flow, when the flow velocity of the fluid is increased, the gas content of the cross section is increased, and the multi-runner can also form uniform liquid phase and gas phase or two-phase flow of the liquid phase and the solid phase and three-phase flow of the liquid phase, the gas phase and the solid phase to realize precise mixing.

The fluid after the precision mixing enters a second-stage impeller, a front cover plate of the second-stage impeller is provided with a section of blade (or is not provided with the blade), a rear cover plate is provided with a section of blade (or is not provided with the blade), and a certain gap is reserved between the two cover plates. Through the second-stage impeller, the second-stage impeller generates a centrifugal effect and a rotating effect on liquid, the viscosity of the liquid is utilized to drive the multiphase fluid to rotate, the multiphase fluid continuously flows along the annular film shape in the centrifugal and rotating processes, the gas flows in the center of the impeller in a gas column shape, and the solid also moves towards the middle, so that the solid phase and the gas phase both flow to the area (the overflowing gap 40) with intervals of the impeller blades, the overflowing gap 40 ensures that the solid phase and the gas phase of the fluid can not pass through without obstacles, the overflowing gap 40 can also protect the solid in the fluid from being damaged, and the impeller can also be ensured not to be damaged. The multiphase flow gains energy in the second stage impeller, and the multiphase flow is mixed and pressurized for a second time.

The chemical process multiphase flow fine mixing pump can independently suck multiphase fluid from the liquid suction port, the air suction port and the particle inlet (the liquid phase inlet 35b, the gas phase inlet 35c and the solid phase inlet 35a) by sub-channels and realize fine mixing, conveying, pressurizing, chemical reaction acceleration and the like. A large amount of gas and solid particles can be mixed and treated.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. Modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.