阅读说明：本技术 一种可控制喘振点的节流高效压缩空气系统 (Throttling efficient compressed air system capable of controlling surge point ) 是由 吴全 高志成 于 2020-04-16 设计创作，主要内容包括：本发明公开了一种可控制喘振点的节流高效压缩空气系统,属于空压机技术领域,包括涡轮盖、叶轮、增速装置以及节流阀；增速装置与涡轮盖的内壁之间形成压缩腔；涡轮盖的顶部设有进气口,涡轮盖的一侧设有排气口,进气口和排气口均与压缩腔相连通,节流阀设在涡轮盖的上方并与进气口相连通；叶轮设在压缩腔内,叶轮套设在增速装置的输出轴上；叶轮与压缩腔的内壁之间形成进气空隙,进气空隙的大小为0.2-0.7mm。通过设置较小的进气缝隙,增大了通过增速装置增速后的空气的压强；同时可降低了压缩空气系统的喘振点,保证系统的正常使用；并通过在进气口处设置节流阀,保证了节流阀的进气腔与压缩腔内气体压力的平衡。(The invention discloses a throttling high-efficiency air compression system capable of controlling a surge point, belonging to the technical field of air compressors and comprising a turbine cover, an impeller, a speed increasing device and a throttling valve; a compression cavity is formed between the speed increasing device and the inner wall of the turbine cover; the top of the turbine cover is provided with an air inlet, one side of the turbine cover is provided with an air outlet, the air inlet and the air outlet are communicated with the compression cavity, and the throttle valve is arranged above the turbine cover and communicated with the air inlet; the impeller is arranged in the compression cavity and sleeved on an output shaft of the speed increasing device; an air inlet gap is formed between the impeller and the inner wall of the compression cavity, and the size of the air inlet gap is 0.2-0.7 mm. The pressure intensity of the air accelerated by the speed increasing device is increased by arranging a small air inlet gap; meanwhile, the surge point of a compressed air system can be reduced, and the normal use of the system is ensured; and the balance of the air inlet cavity of the throttle valve and the air pressure in the compression cavity is ensured by arranging the throttle valve at the air inlet.)

1. A throttling high-efficiency compressed air system capable of controlling a surge point is characterized by comprising a turbine cover, an impeller, a speed increasing device and a throttling valve; the speed increasing device is arranged between the bottom of the turbine cover and the inner wall of the turbine cover to form a compression cavity; the top of the turbine cover is provided with an air inlet, one side of the turbine cover is provided with an air outlet, the air inlet and the air outlet are communicated with the compression cavity, and the throttle valve is arranged above the turbine cover and communicated with the air inlet; the impeller is arranged in the compression cavity and sleeved on an output shaft of the speed increasing device; an air inlet gap is formed between the impeller and the inner wall of the compression cavity, and the size of the air inlet gap is 0.2-0.7 mm.

2. The throttle efficient compressed air system capable of controlling the surge point of claim 1, wherein an arc shaped connection is provided between the turbine cover and the air inlet.

3. The throttle high-efficiency compressed air system with controllable surge point of claim 1, wherein the surface of the speed increasing device is provided with a positioning concave platform, and the impeller is arranged on the positioning concave platform.

4. The throttle high efficiency compressed air system with controllable surge point of claim 1, wherein the throttle valve comprises a throttle inlet and a throttle outlet, the opening area of the throttle inlet is larger than the opening area of the throttle outlet.

5. The surge point controllable, throttled high efficiency compressed air system of claim 4, wherein said throttle valve further comprises a throttle ramp, said throttle ramp disposed between said throttle inlet and said throttle outlet.

6. The throttle efficient compressed air system capable of controlling the surge point of claim 5, wherein the opening area of the throttle outlet is smaller than the opening area of the intake port.

Technical Field

The invention relates to the field of air compressors, in particular to a throttling efficient air compression system capable of controlling a surge point.

Background

The surge phenomenon is vibration of the air compressor under an abnormal working condition when the flow of the air compressor is reduced to a certain degree, and the surge of the air compressor can destroy the flowing regularity of media inside the machine, generate mechanical noise, cause strong vibration of working parts and accelerate the damage of a bearing and a seal. Once surge causes the pipe, machine and its foundation to resonate, it can also have serious consequences.

Disclosure of Invention

The invention aims to provide a throttling high-efficiency compressed air system which reduces a surge point and ensures the output pressure of air.

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

a throttling high-efficiency compressed air system capable of controlling a surge point comprises a turbine cover, an impeller, a speed increasing device and a throttling valve; the speed increasing device is arranged between the bottom of the turbine cover and the inner wall of the turbine cover to form a compression cavity; the top of the turbine cover is provided with an air inlet, one side of the turbine cover is provided with an air outlet, the air inlet and the air outlet are communicated with the compression cavity, and the throttle valve is arranged above the turbine cover and communicated with the air inlet; the impeller is arranged in the compression cavity and sleeved on an output shaft of the speed increasing device; an air inlet gap is formed between the impeller and the inner wall of the compression cavity, and the size of the air inlet gap is 0.2-0.7 mm; the throttle valve is used for sensing the air flow entering the throttle valve and controlling the air flow entering the air inlet.

The size of an air inlet gap between the impeller and the inner wall of the compression cavity is set to be 0.2-0.7mm, and the pressure of air accelerated by the speed increasing device is increased by setting a smaller air inlet gap, so that the quality of compressed air is improved; meanwhile, the surge point of a compressed air system can be reduced, and the normal use of the system is ensured; the throttle valve is arranged at the air inlet, so that the balance of the air inlet cavity of the throttle valve and the air pressure in the compression cavity is ensured, the adjustment of the air flow is realized, the optimal air flow control effect is achieved, the multistage speed increasing is formed jointly, and the maximum efficiency can be achieved.

Preferably, an arc-shaped connecting part is arranged between the turbine cover and the air inlet.

Through set up arc connecting portion between turbine lid and air inlet, make the inner wall in compression chamber press close to the impeller more easily, be convenient for guarantee between impeller and the compression chamber apart from the air inlet space that the distance is shortest between 0.2mm to 0.7mm to form less air inlet space, guaranteed after the impeller acceleration rate, the pressure of the compressed air of following the gas vent output is enough big.

Preferably, a positioning concave table is arranged on the surface of the speed increasing device, and the impeller is arranged on the positioning concave table.

The positioning concave station is used for positioning the impeller during assembly, and is convenient to install.

Preferably, the throttle valve includes a throttle inlet and a throttle outlet, and an opening area of the throttle inlet is larger than an opening area of the throttle outlet.

The throttling function of the gas flow entering the compression cavity is achieved by setting the opening area of the throttling inlet to be larger than that of the throttling outlet.

Preferably, the throttle valve further comprises a throttle slope, and the throttle slope is arranged between the throttle inlet and the throttle outlet.

The throttling inclined plane is formed between the throttling inlet and the throttling outlet, the edge of the throttling inlet gradually extends downwards to the edge of the throttling outlet in an inclined mode, so that the volume of air entering the throttling inlet is gradually reduced, the throttling effect is achieved, the air pressure of the air is improved, and the air pressure of air flowing into the compression cavity is guaranteed.

Preferably, the opening area of the throttle outlet is smaller than the opening area of the intake port.

The function of throttling is achieved.

The invention has the beneficial effects that: the size of an air inlet gap between the impeller and the inner wall of the compression cavity is set to be 0.2-0.7mm, and the pressure of air accelerated by the speed increasing device is increased by setting a smaller air inlet gap, so that the quality of compressed air is improved; meanwhile, the surge point of a compressed air system can be reduced, and the normal use of the system is ensured; the throttle valve is arranged at the air inlet, so that the balance of the air inlet cavity of the throttle valve and the air pressure in the compression cavity is ensured, the adjustment of the air flow is realized, the optimal air flow control effect is achieved, the multistage speed increasing is formed jointly, and the maximum efficiency can be achieved.

Drawings

The drawings are further illustrative of the invention and the content of the drawings does not constitute any limitation of the invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

fig. 3 is an overall structural view of the position a of fig. 2.

Wherein: the turbine cover 1, the impeller 12, the speed increasing device 3, the throttle valve 2, the compression cavity 113, the air inlet 111, the air outlet 112, the air inlet gap 114, the arc-shaped connecting part 13, the positioning concave platform 31, the throttle inlet 21, the throttle outlet 22 and the throttle inclined plane 23.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The throttling high-efficiency compressed air system capable of controlling the surge point of the embodiment is shown in the attached figures 1-3 and comprises a turbine cover 1, an impeller 12, a speed increasing device 3 and a throttling valve 2; the speed increasing device 3 is arranged between the bottom of the turbine cover 1 and the inner wall of the turbine cover 1 to form a compression cavity 113; the top of the turbine cover 1 is provided with an air inlet 111, one side of the turbine cover 1 is provided with an air outlet 112, the air inlet 111 and the air outlet 112 are both communicated with the compression cavity 113, and the throttle valve 2 is arranged above the turbine cover 1 and communicated with the air inlet 111; the impeller 12 is arranged in the compression cavity 113, and the impeller 12 is sleeved on an output shaft of the speed increasing device 3; an air inlet gap 114 is formed between the impeller 12 and the inner wall of the compression cavity 113, and the size of the air inlet gap 114 is 0.2-0.7 mm; the throttle valve 2 is used to sense the flow of gas entering the throttle valve 2 and to control the flow of gas entering the inlet 111.

The size of an air inlet gap between the impeller 12 and the inner wall of the compression cavity 113 is set to be 0.2-0.7mm, and the pressure of air accelerated by the speed increasing device 3 is increased by setting a smaller air inlet gap, so that the quality of compressed air is improved; meanwhile, the surge point of a compressed air system can be reduced, and the normal use of the system is ensured; by arranging the throttle valve 2 at the air inlet 111, the balance of the air pressure in the air inlet cavity 212 of the throttle valve 2 and the air pressure in the compression cavity 113 is ensured, the air flow is adjusted, the optimal air flow control effect is achieved, the multistage acceleration is formed together, and the maximum efficiency can be achieved.

An arc-shaped connecting part 13 is arranged between the turbine cover 1 and the air inlet 111.

By arranging the arc-shaped connecting part 13 between the turbine cover 1 and the air inlet 111, the inner wall of the compression cavity 113 is more easily close to the impeller 12, so that the shortest distance between the impeller 12 and the compression cavity 113 is ensured to be between 0.2mm and 0.7mm, a smaller air inlet gap 114 is formed, and the pressure of compressed air output from the air outlet 112 is ensured to be large enough after the impeller 12 is accelerated.

The surface of the speed increasing device 3 is provided with a positioning concave table 31, and the impeller 12 is arranged on the positioning concave table 31.

The positioning concave table 31 is used for positioning the impeller 12 during assembly, and is convenient to install.

As shown in fig. 2, the throttle valve 2 includes a throttle inlet 21 and a throttle outlet 22, and the opening area of the throttle inlet 21 is larger than the opening area of the throttle outlet 22.

By setting the opening area of the throttle inlet 21 larger than the opening area of the throttle outlet 22, the flow rate of the gas entering the compression chamber 113 is throttled.

The throttle valve 2 further comprises a throttle bevel 23, and the throttle bevel 23 is arranged between the throttle inlet 21 and the throttle outlet 22.

The throttling inclined plane 23 is formed between the throttling inlet 21 and the throttling outlet 22 from the edge of the throttling inlet 21 to the edge of the throttling outlet 22, so that the volume of air entering the throttling inlet 21 is gradually reduced, the throttling effect is achieved, the air pressure of the air is improved, and the air pressure of the air entering the compression cavity 113 is guaranteed.

The opening area of the throttle outlet 22 is smaller than the opening area of the intake port 111. The function of throttling is achieved.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.