阅读说明：本技术 一种轴流式高压离心风机 (Axial-flow high-pressure centrifugal fan ) 是由 林亮 沈一群 汪超 于 2020-12-30 设计创作，主要内容包括：本发明提供一种轴流式高压离心风机,包括设置转子和定子的变频电机,还包括壳体导流板,固定在转子上的离心叶轮,所述壳体导流板、离心叶轮、变频电机依照进风出风方向依次安装在耐压壳体内,进风口还设置进口连接法兰,出风口还设置出口连接法兰,所述壳体导流板为内侧边内凹弧形的柱形圆环设计,形成导流边；设置壳体导流板,有利于改变进风之后流体的流动方向,使风向吹到变频电机定子及电机外壳,不用单独使用冷却系统,也可以使电机冷却,使工作环境稳定,故障率降低；使用离心叶轮替代传统的扇叶叶轮,在高压环境稳定提供流体流动,且边缘侧设置的斜边导流线,引导风向向定子及电机外壳方向流动。(The invention provides an axial-flow high-pressure centrifugal fan, which comprises a variable frequency motor provided with a rotor and a stator, and further comprises a shell guide plate and a centrifugal impeller fixed on the rotor, wherein the shell guide plate, the centrifugal impeller and the variable frequency motor are sequentially arranged in a pressure-resistant shell according to the air inlet and outlet directions; the arrangement of the shell guide plate is beneficial to changing the flowing direction of fluid after air inlet, so that the wind direction is blown to the stator and the motor shell of the variable frequency motor, a cooling system is not needed to be used independently, the motor can be cooled, the working environment is stable, and the failure rate is reduced; the centrifugal impeller is used for replacing a traditional fan blade impeller, fluid flow is stably provided in a high-pressure environment, and the bevel edge guide lines arranged on the edge side guide the wind to flow towards the stator and the motor shell.)

1. The utility model provides an axial-flow type high pressure centrifugal fan, is including setting up the inverter motor of rotor and stator, its characterized in that: the centrifugal impeller is fixed on the rotor; casing guide plate, centrifugal impeller, inverter motor install in proper order in withstand voltage casing according to air inlet air-out direction, withstand voltage casing air intake still sets up the inlet flange, withstand voltage casing air outlet still sets up outlet flange, the casing guide plate is the design of the curved cylindricality ring of inboard indent, forms the water conservancy diversion limit.

2. The axial flow high pressure centrifugal fan of claim 1, wherein: the centrifugal impeller comprises a circular front cover provided with an air inlet circular hole, a circular rear cover with the outer diameter smaller than that of the front cover, and blades arranged in the middle of the front cover rear cover, wherein the blades surround the air inlet circular hole at the side of the circle center to form a circle, are perpendicular to the front cover and the rear cover, are uniformly distributed and arranged around the edge side, are respectively level with the edges of the front cover and the rear cover, and are bent in the opposite direction when the air is fed close to the edge side to form an inclined edge guide line opening towards the air outlet direction.

3. The axial flow high-pressure centrifugal fan of claim 2, wherein: the bevel edge diversion line and the diversion edge are positioned in a vertical plane area.

4. The axial flow high pressure centrifugal fan of claim 1, wherein: still include that high-pressure through-parts sets up in pressure-resistant casing top, the inside wire that sets up of high-pressure through-parts is introduced pressure-resistant casing inside and is connected with inverter motor.

5. The axial flow high pressure centrifugal fan of claim 4, wherein: and a junction box is arranged on the outer side of the high-voltage penetrating piece.

6. The axial flow high pressure centrifugal fan of claim 1, wherein: the variable frequency motor is provided with a motor shell which is arranged in the pressure-resistant shell, and a plurality of fixing facilities are arranged between the motor shell and the inner side edge of the pressure-resistant shell.

7. The axial flow high pressure centrifugal fan of claim 1, wherein: and at least two fan supports are arranged below the outer side of the pressure-resistant shell.

8. The axial flow high pressure centrifugal fan of claim 1, wherein: the inlet connecting flange is connected with an air inlet pipeline, and the outlet connecting flange is connected with an air outlet pipeline.

Technical Field

The invention relates to the field of gas fluid measurement and verification, in particular to an axial-flow high-pressure centrifugal fan.

Background

In order to realize the verification of the flow meters under different temperature, pressure and medium conditions, a special high-pressure gas flow verification device is needed, for example, natural gas is taken as an example, the verification conditions are realized by adjusting pressure, temperature and flow after a natural gas long-distance pipeline is cut off, and gas is returned to the natural gas long-distance pipeline after verification is finished.

In an extreme pressure environment like a high-pressure loop detection link, a circulating fan or a compressor is required to be used as gas flow driving equipment in a pipeline, a traditional high-pressure centrifugal fan is a fan blade, the working pressure of the traditional high-pressure centrifugal fan is normal pressure or micro-positive pressure, the traditional high-pressure centrifugal fan cannot operate under the condition of large internal gas pressure, and stable fluid flow is provided; in the working process, because the stator rotates in a high-pressure environment under the high-pressure high-speed running environment, the stator in the engine often has running faults due to overhigh temperature, and the working efficiency is influenced; if a high-pressure gas compressor is used, which is mainly used for a long-distance pipeline or a pressurization device of a gas treatment plant, the defects are that the size is large, the power is large, the cost is high, and an independent cooling pipeline is needed to cool the working environment temperature of the fan.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an axial-flow high-pressure centrifugal fan.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an axial-flow type high pressure centrifugal fan, still includes the casing guide plate including the inverter motor who sets up rotor and stator, fixes the centrifugal impeller on the rotor, casing guide plate, centrifugal impeller, inverter motor are installed in pressure-resistant casing according to air inlet air-out direction in proper order, and the pressure-resistant casing air intake still sets up inlet flange, and the pressure-resistant casing air outlet still sets up outlet flange, the casing guide plate is the design of the curved cylindricality ring of inboard indent, forms the water conservancy diversion limit.

The shell guide plate is arranged, so that the flowing direction of fluid after air inlet is changed is facilitated, the wind direction blows the variable frequency motor stator and the motor shell, the motor can be cooled without using a cooling system independently, the working environment is stable, and the failure rate is reduced.

Further, centrifugal impeller is including the circular shape protecgulum that sets up the air inlet round hole, and the external diameter is less than the circular shape back lid of protecgulum external diameter, sets up the blade in the middle of the protecgulum back lid, the blade is surrounded at the centre of a circle side air inlet round hole forms circularly to perpendicular to protecgulum in back lid, evenly distributed arranges around the edge side to keep level respectively with protecgulum and back lid edge, and buckle in the opposite direction when being close edge side direction when admitting wind, form to air-out direction open-ended hypotenuse water conservancy diversion line, use centrifugal impeller to replace traditional flabellum impeller, can show improvement wind pressure, and the hypotenuse water conservancy diversion line that the edge side set up, the guide wind direction flows to stator and motor housing direction.

Furthermore, the bevel edge guide line and the guide edge are positioned in a vertical plane area, so that the bevel edge guide line and the guide edge can work cooperatively, and the fluid guide efficiency is improved.

Furthermore, the high-voltage penetration piece is arranged above the pressure-resistant shell, and a conducting wire is arranged inside the high-voltage penetration piece and is led into the pressure-resistant shell to be connected with the variable frequency motor.

And a junction box is arranged above the high-voltage penetrating piece.

The junction box is prevented from being directly connected with the pressure-resistant shell and cannot adapt to the high-pressure environment in the pressure-resistant shell to cause damage or failure.

Furthermore, the variable frequency motor is provided with a motor shell which is arranged in the pressure-resistant shell, and a plurality of fixing facilities are arranged between the motor shell and the inner side edge of the pressure-resistant shell, so that the variable frequency fan can stably work in the pressure-resistant shell, and the vibration is reduced.

Furthermore, fan supports are arranged below the outer side of the pressure shell, and the number of the fan supports is at least two, so that the whole device can be fixed.

The inlet connecting flange is connected with an air inlet pipeline, the outlet connecting flange is connected with an air outlet pipeline, and the connecting flange has higher connecting stability.

Compared with the prior art, the invention has the beneficial effects that: the arrangement of the shell guide plate is beneficial to changing the flowing direction of fluid after air inlet, so that the wind direction is blown to the stator and the motor shell of the variable frequency motor, a cooling system is not needed to be used independently, the motor can be cooled, the working environment is stable, and the failure rate is reduced; the centrifugal impeller is used for replacing a fan blade impeller and is provided with the bevel edge diversion line, so that when the centrifugal impeller is in a high-pressure environment, fluid flow can be stably provided, and meanwhile, the wind direction is further guided to blow to a stator and a motor shell of the variable frequency motor, and the motor cooling efficiency is improved.

Drawings

FIG. 1 is an exploded view of example 1 of the present invention;

FIG. 2 is a perspective view of the embodiment 1 of the present invention;

FIG. 3 is a schematic view of a shell baffle of example 1 of the present invention;

FIG. 4 is a schematic view of a centrifugal impeller 1 according to example 1 of the present invention;

FIG. 5 is a schematic view of a centrifugal impeller 2 according to example 1 of the present invention;

FIG. 6 is a fluid flow circuit diagram of embodiment 1 of the present invention;

fig. 7 is a partial view of a junction box of embodiment 1 of the invention;

description of reference numerals: 1. the variable frequency motor comprises a variable frequency motor body, 11 motor shells, 12 fixing facilities, 13 rotors, 14 stators, 2 centrifugal impellers, 21 front covers, 22 rear covers, 23 blades, 24 bevel edge guide lines, 25 air inlet circular holes, 3 shell guide plates, 31 guide edges, 4 pressure-resistant shells, 41 fan supports, 51 inlet connecting flanges, 52 outlet connecting flanges, 6 high-pressure penetrating pieces, 7 junction boxes and 8 fluid flow circuits.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

As shown in fig. 1-3, an axial-flow high-pressure centrifugal fan includes a variable frequency motor 1 provided with a rotor 13 and a stator 14, and further includes a casing guide plate 3 and a centrifugal impeller 2 fixed on the rotor 13, the casing guide plate 3, the centrifugal impeller 2 and the variable frequency motor 1 are sequentially installed in a pressure-resistant casing 4 according to an air inlet and outlet direction, the pressure-resistant casing 4 can bear the working condition of high-pressure fluid due to pressure-resistant design, and the strength is greater than that of conventional materials; the air inlet of the pressure shell 4 is also provided with an inlet connecting flange 51, the air outlet of the pressure shell 4 is also provided with an outlet connecting flange 52, and the shell guide plate 3 is designed into an inner side concave arc-shaped cylindrical ring to form a guide edge 31.

As shown in fig. 4-5, the centrifugal impeller 2 includes a circular front cover 21 provided with a circular air inlet hole 25, a circular rear cover 22 having an outer diameter smaller than that of the front cover 21, and blades 23 disposed in the middle of the rear cover 22 of the front cover 21, wherein the blades 23 surround the circular air inlet hole 25 at the center of the circle to form a circle, are uniformly distributed around the edges, are respectively flush with the edges of the front cover 21 and the rear cover 22, and are bent in the opposite direction when the blades rotate when the blades are close to the edges to supply air, so as to form a bevel edge guide line 24 opening in the air outlet direction.

Typically, the front cover 21 has an outer diameter of 600mm and the rear cover 22 has a diameter of 500 mm.

The blades 23 are disposed with narrow sides compared to the fan-shaped blades 23, and are perpendicular to the front cover 21 and the rear cover 22.

The hypotenuse flow guide line 24 and the flow guide edge 31 are in a vertical plane area.

As shown in fig. 6, when the variable frequency fan is powered on to start operating, the centrifugal impeller 2 rotates along with the rotation of the rotor 13, the stator 14 starts to gradually generate heat as the operating time increases, the airflow enters from the air inlet circular hole 25, the inclined diversion line 24 guides and changes the fluid flow line 8 along with the rotation of the blade 23, the fluid flows towards the stator 14 and the motor housing 11, the fluid impacting the diversion edge 31 is also guided and changes the fluid flow line 8 and flows towards the stator 14 and the motor housing 11, the temperature of the stator 14 and the motor housing 11 decreases along with the passing of the fluid, and the fluid finally flows out from the outlet connecting flange 52.

As shown in fig. 7, a high-voltage penetration piece 6 is arranged above the pressure casing 4, and a lead is arranged inside the high-voltage penetration piece 6 and led into the pressure casing 4 to be connected with the inverter motor 1.

And a junction box 7 is arranged above the high-voltage penetrating piece 6, and the junction box 7 is connected with an external power supply.

The variable frequency motor 1 is provided with a motor shell 11 arranged in a pressure casing 4, a plurality of fixing facilities 12, generally three fixing facilities 12, are arranged between the motor shell 11 and the inner side edge of the pressure casing 4, and the fixing facilities 12 are generally rod-shaped fixing facilities 12.

Fan support 41 is arranged below the outer side of pressure shell 4, fan support 41 is at least two, generally two, fan support 41 is pressure-resistant design, and plays the role of gravity and support of the whole device.

The inlet connecting flange 51 is connected with an air inlet pipeline, the outlet connecting flange 52 is connected with an air outlet pipeline, and the inlet connecting flange 51 and the outlet connecting flange 52 are respectively connected with the air inlet pipeline and the air outlet pipeline in an intermediate connecting structure.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.