阅读说明：本技术 用于流程阀门出流的整流装置 (Rectifying device for outflow of process valve ) 是由 刘琦 田帅 林哲 陈德胜 张光 朱祖超 毛伟 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种用于流程阀门出流的整流装置,在流程阀门的出口处安装有整流装置,该整流装置从上游至下游依次包括：入口构件、中心构件和出口构件。当流体在管道输送过程中,流程阀门的开度调控会使其出口附近出现非均匀偏心紊乱流动,并伴随漩涡的产生,严重影响其出口流动的稳定性。该装置能够将流程阀门开度调控引起的出口紊乱流动经过汇聚、匀散、消涡和整合处理,有效地改善紊乱流动,达到有效的整流效果,从而提高了流程阀门出口流动的稳定性。此外,本发明可与管道流体测量装置配合使用,有利于管道流体测量装置的稳定流动信号采集,提高测量精度。(The invention discloses a rectifying device for the outflow of a process valve, which is arranged at the outlet of the process valve and sequentially comprises the following components from upstream to downstream: an inlet member, a central member and an outlet member. When fluid is conveyed in a pipeline, the opening control of the flow valve can cause non-uniform eccentric turbulent flow near the outlet of the flow valve, and the stability of the flow at the outlet is seriously influenced along with the generation of vortex. The device can improve the turbulent flow effectively through gathering, scattering, vortex elimination and integration treatment with the outlet turbulent flow that flow valve aperture regulation and control arouses to reach effectual rectification effect, thereby improved the stability that flow valve outlet flows. In addition, the invention can be used in cooperation with a pipeline fluid measuring device, is beneficial to the stable flow signal acquisition of the pipeline fluid measuring device and improves the measurement precision.)

1. A fairing for a process valve outflow, comprising a process valve (1), characterized in that a fairing (2) is mounted at the outlet of the process valve (1), the fairing (2) comprising in sequence from upstream to downstream: an inlet member (2A), a central member (2B) and an outlet member (2C).

2. The flow straightener for a process valve outflow of claim 1, wherein:

one end of the inlet component (2A), which is close to the process valve (1), is a tapered conical cavity body (3A), and the other end is a tapered conical cavity body (4A);

one end of the central component (2B), which is close to the inlet component (2A), is provided with a conical boss (3B) at the center, the bottom surface of the conical boss (3B) is provided with 4-6 layers of circular arc waist-shaped holes (4B) at equal intervals in the radial direction, each layer of circumference is uniformly and alternately provided with 5-8 circular arc waist-shaped holes (4B) and circular holes (5B), and the other end is provided with a buffer cavity (6B);

the center of the outlet component (2C) is provided with a circular through hole (3C), and the peripheral circumferential direction of the circular through hole (3C) is provided with fan-shaped holes (4C) which are uniformly distributed.

3. The flow straightener for a process valve outflow of claim 1, wherein: the tapered cone angle of the tapered conical cavity body (3A)αIs 15-30 degrees.

4. The flow straightener for a process valve outflow of claim 1, wherein: the gradually expanding cone angle of the gradually expanding conical cavity body (4A)βIs 15-30 degrees.

5. The flow straightener for a process valve outflow of claim 1, wherein: the number of the uniformly distributed fan-shaped holes (4C) is 20-30.

6. The flow straightener for a process valve outflow of claim 1, wherein: the extension line of the generatrix of the tapered conical cavity body (3A) is intersected with the vertex of the conical boss (3B).

Technical Field

The present invention relates to a flow straightener, and more particularly to a flow straightener for process valve outflow.

Background

The flow valve is an important device for regulating and controlling fluid in pipeline fluid delivery, and is widely applied to the fields of machinery, chemical engineering, energy sources and the like. However, the opening of the flow valve causes non-uniform eccentric turbulent flow near the outlet of the flow valve, and the generation of vortex seriously affects the stability of the flow at the outlet, thereby restricting the signal acquisition and the precision of the pipeline fluid metering device behind the valve.

In reality, the traditional method is to extend the pipeline at the outlet end of the flow valve to obtain stable flow, but this raises high requirements on the spatial arrangement of the flow pipeline. However, the function of the fairing is to convert an unstable flow to a stable flow, greatly shortening or eliminating the extended conduit.

At present, the existing rectifying devices are designed more in a single rectifying structure, mainly comprising a perforated plate type, a tube bundle type and a blade type, and the combined rectifying structure is less; secondly, the existing rectifier structure design has poor rectifying effect, large flow resistance and poor universality. Therefore, according to the characteristic of non-uniform eccentric turbulent flow of the process valve outflow, the rectifying structure has practical significance for developing the rectifying design of the process valve outflow in a targeted manner with the aim of rectifying effect and flow resistance.

Disclosure of Invention

The invention aims to provide a rectifying device for process valve outflow. According to the characteristics of non-uniform eccentric turbulent outflow caused by the opening regulation of the flow valve, a comprehensive rectification mode of convergence, dispersion, vortex elimination and integration is adopted, the turbulent flow is effectively improved, the effective rectification effect is achieved, and therefore the stability of the flow at the outlet of the flow valve is improved.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the invention discloses a rectifying device for process valve outflow, which comprises a process valve, wherein a rectifying device is arranged at an outlet of the process valve, and the rectifying device sequentially comprises the following components from upstream to downstream: an inlet member, a central member and an outlet member.

The inlet component is provided with a tapered conical cavity body at one end close to the flow valve and a tapered conical cavity body at the other end.

The central component, it has conical boss to be the center near entry component one end, and the radial equidistance in conical boss bottom surface is opened has the circular arc waist shape hole of 4~6 layers, and 5~8 circular arc waist shape holes and circular port of even staggered arrangement on every layer of circumference, the other end are the cushion chamber.

The outlet component is provided with a circular through hole in the center, and fan-shaped holes are uniformly distributed in the peripheral circumferential direction of the circular through hole.

The tapered cone angle of the tapered conical cavity bodyαIs 15-30 degrees.

The gradually expanding taper angle of the gradually expanding conical cavity bodyβIs 15-30 degrees.

The number of the uniformly distributed fan-shaped holes is 20-30.

The extension line of the generatrix of the tapered conical cavity body is intersected with the vertex of the conical boss.

The invention has the beneficial effects that:

when fluid is conveyed in a pipeline, the opening control of the flow valve can cause non-uniform eccentric turbulent flow near the outlet of the flow valve, and the stability of the flow at the outlet is seriously influenced along with the generation of vortex. The device can improve the turbulent flow effectively through gathering, scattering, vortex elimination and integration treatment with the outlet turbulent flow that flow valve aperture regulation and control arouses to reach effectual rectification effect, thereby improved the stability that flow valve outlet flows. In addition, the device can be used with the cooperation of pipeline fluid measuring device, is favorable to pipeline fluid measuring device's stable signal collection that flows, improves measurement accuracy.

Drawings

FIG. 1 is a schematic view of the present invention assembled with a process valve.

Fig. 2 is a perspective view of the structure of the present invention.

Fig. 3 is a front view of the inlet member of fig. 2.

Fig. 4 is a sectional view of fig. 3 taken along line 1-1.

Fig. 5 is a front view of the central member of fig. 2.

Fig. 6 is a cross-sectional view 2-2 of fig. 5.

Fig. 7 is a front view of the outlet member of fig. 2.

Fig. 8 is a cross-sectional view of fig. 7 taken along line 3-3.

Fig. 9 is an assembled cross-sectional view of the invention as a whole.

In the figure: 1. flow valve, 2, fairing, 2A, entry component, 3A, the conical cavity body of convergent, 4A, the conical cavity body of divergent, 2B, central component, 3B, conical boss, 4B, circular arc waist shape hole, 5B, circular port, 6B, cushion chamber, 2C, exit component, 3C circular through-hole, 4C, fan-shaped hole.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1 and fig. 2, a rectifying device for process valve outflow comprises a process valve 1, and is characterized in that a rectifying device 2 is installed at an outlet of the process valve 1, and the rectifying device 2 sequentially comprises from upstream to downstream: an inlet member 2A, a central member 2B and an outlet member 2C.

As shown in fig. 3 and 4, the inlet member 2A has a tapered conical cavity 3A at one end near the process valve 1 and a tapered conical cavity 4A at the other end.

As shown in fig. 5 and 6, one end of the central member 2B, which is close to the inlet member 2A, is provided with a conical boss 3B, 4-6 layers of circular arc waist-shaped holes 4B are radially and equidistantly formed in the bottom surface of the conical boss 3B, 5-8 circular arc waist-shaped holes 4B and circular holes 5B are uniformly and alternately arranged on the circumference of each layer, and the other end of the central member is provided with a buffer cavity 6B.

As shown in fig. 7 and 8, the outlet member 2C has a circular through hole 3C in the center thereof, and the circular through hole 3C is provided with fan-shaped holes 4C uniformly distributed in the peripheral circumferential direction.

As shown in fig. 4, the tapered taper angle of the tapered conical hollow body 3AαIs 15-30 degrees.

As shown in fig. 4, the tapered cone angle of the tapered conical cavity 4AβIs 15-30 degrees.

As shown in FIG. 7, the number of the uniformly distributed fan-shaped holes 4C is 20-30.

As shown in fig. 9, the extension line of the generatrix of the tapered conical hollow cavity 3A intersects with the vertex of the conical projection 3B.

The working principle of the invention is as follows:

as shown in fig. 1 and fig. 9, in the pipeline fluid transportation, the opening degree of the process valve 1 is adjusted to cause the non-uniform eccentric turbulent flow near the outlet. This non-uniform eccentric turbulent flow (shown by arrows in fig. 9) first converges towards the center of the pipe through the tapered conical cavity 3A at the forward end of the inlet member 2A of the fairing 2 of the present invention. Then, the converged flow collides with the top of the conical boss 3B at the front end of the upper central member 2B, and is radially and uniformly distributed along the flow channel between the tapered conical cavity body 4A and the conical boss 3B, and as the extension line of the generatrix of the tapered conical cavity body 3A is intersected with the vertex of the conical boss 3B, the radial uniform distribution effect is better after the converged flow collides with the conical boss 3B. Then, the evenly dispersed fluid passes through the circular arc waist-shaped hole 4B and the circular hole 5B on the periphery of the conical boss 3B to carry out vortex elimination treatment. Because the arc waist-shaped hole 4B and the circular hole 5B are radially distributed in multiple layers, and each layer is uniformly staggered, a larger through flow area is ensured while a better vortex elimination effect is achieved, and the flow resistance is reduced. The flow after the vortex elimination treatment enters the buffer cavity 6B for integration. Finally, through the central circular through hole 3C of the outlet component 2C and the peripheral fan-shaped holes 4C, vortex elimination and integration treatment are further and better realized, turbulent flow is effectively improved, and the final rectification effect is achieved, so that the flow stability of the outlet of the flow valve 1 is improved. In addition, the invention can be used in cooperation with a pipeline fluid measuring device, is beneficial to the stable flow signal acquisition of the pipeline fluid measuring device and improves the measurement precision.