CN-224221597-U - Centrifugal spray head structure and desuperheater

Abstract

The utility model relates to a centrifugal spray head structure and a desuperheater, wherein the centrifugal spray head structure comprises a base and a cover body, desuperheater water sequentially passes through a first runner, a second runner and a diffusion cavity, the width of the second end of the groove body is smaller than that of the first end of the groove body, namely the flow area of the second runner is continuously reduced, the flow rate of the desuperheater water in the second runner is gradually increased, the inner diameter of the diffusion cavity is larger than that of the second end of the second runner, the pressure of the desuperheater water is suddenly reduced, the temperature change of the desuperheater water is small, the pressure is smaller than the saturated vapor pressure of the desuperheater water at the moment, and the desuperheater water is converted into a mixed state of vapor and small water drops from a liquid state. Meanwhile, as the second flow passage is spiral, certain centrifugal force still exists when the desuperheating water is sprayed out of the diffusion cavity, spiral movement is still kept after the desuperheating water is sprayed out of the diffusion cavity, and the atomized desuperheating water is uniformly diffused around, so that the atomized desuperheating water and the desuperheating steam are fully mixed, and the desuperheating device is simple in structure and good in cooling effect.

Inventors

• QI MAOBO

Assignees

• 无锡市亚迪流体控制技术有限公司

Dates

Publication Date

20260512

Application Date

20250521

Claims (8)

1. 1. Centrifugal shower nozzle structure, its characterized in that, centrifugal shower nozzle structure includes: A base, the base comprising: The first runner is arranged at the front end of the base; the groove bodies are arranged at the rear end of the base at intervals around the center of the first flow channel, the central line of the groove bodies is a curve, one end of the curve, which is close to the center of the base, is used as a first end, the first end of the groove bodies is communicated with the first flow channel, and the width of the second end of the groove bodies is smaller than that of the first end of the groove bodies; the diffusion cavity is arranged at the outer side of the base; The cover body is fixedly arranged at the rear end of the base and surrounds the groove body to form a second flow channel, the first end of the second flow channel is communicated with the first flow channel, the second end of the second flow channel is communicated with the diffusion cavity, and the inner diameter of the diffusion cavity is larger than that of the second end of the second flow channel.
2. 2. The centrifugal spray head structure according to claim 1, wherein the centrifugal spray head structure comprises: The annular cavity is arranged at the outer side between the base and the cover body, two ends of the annular cavity are respectively communicated with the second end of the diffusion cavity and the outer space of the base, and the cover body comprises: The diffusion walls are uniformly arranged around the center of the first flow channel at intervals, the positions of the diffusion walls correspond to the outer sides of the annular cavities, the front ends of the inner sides of the diffusion walls are connected to the outer sides of the base, the rear ends of the inner sides of the diffusion walls are connected to the outer sides of the base, and the diffusion cavities are located on the corresponding diffusion walls along the projection of the diffusion cavities in the axial direction of the diffusion walls.
3. 3. The centrifugal nozzle structure of claim 2, wherein said diffusion wall is integrally formed with said cover, and said front end of said inside of said diffusion wall is welded to said base.
4. 4. The centrifugal nozzle structure of claim 1, wherein said base is a disk, said first flow passage is provided in the center of said base, and said second flow passage is perpendicular to said first flow passage.
5. 5. The centrifugal nozzle structure of any one of claims 1-4, wherein the front end of the base extends out of the connecting portion.
6. 6. A desuperheater, characterized in that the desuperheater comprises: A first pipe having a third flow passage therein; the first end of the second pipeline passes through the first pipeline and stretches into the third flow passage, and a fourth flow passage is formed in the second pipeline; The centrifugal nozzle structure of claim 5, wherein the centrifugal nozzle structure is connected to a rear side of the first end of the second pipe, the front end of the first flow passage is communicated with the second end of the fourth flow passage, and the diffusion chamber is communicated with the third flow passage.
7. 7. A desuperheater according to claim 6, wherein the second pipe has a threaded hole formed in the rear side of the second end, and the connecting portion is screwed into the threaded hole.
8. 8. A desuperheater of claim 6, wherein the base, the cover, and the first conduit are coaxially disposed.

Description

Centrifugal spray head structure and desuperheater Technical Field The utility model relates to the technical field of attemperators, in particular to a centrifugal spray head structure and an attemperator. Background The desuperheater needs to perform temperature reduction control according to different steam temperatures and pressure requirements. The desuperheater generally includes a first conduit having a first flow passage therein through which hot vapor flows and a second conduit extending into the first conduit and having an end connected to the atomizer. The atomizer adopts atomizing piece or efflux atomizer usually, however the fog blowout angle that this type atomizer produced is less and the distance is nearer, and the superheated steam that keeps away from atomizer is difficult to mix with atomizing desuperheating water, leads to export steam temperature and pressure fluctuation great, influences downstream equipment operating efficiency, and system stability and security decline. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of utility model Aiming at the defects of the prior art, the embodiment of the utility model discloses a centrifugal spray head structure and a desuperheater. The technical scheme adopted by the utility model is as follows: The centrifugal spray head structure comprises a base, a groove body, a cover body and a cover body, wherein the base comprises a first flow channel and is arranged at the front end of the base, the groove body is provided with a plurality of grooves which are arranged at the rear end of the base and uniformly distributed around the center of the first flow channel, the center line of the groove body is a curve, one end, close to the center of the base, of the curve is used as the first end, the first end of the groove body is communicated with the first flow channel, the width of the second end of the groove body is smaller than that of the first end of the groove body, a connecting line between the first end of the center line and the center of the base is used as a reference line, the included angle between the tangent line of the center line and the reference line is gradually reduced from the first end of the center line, a diffusion cavity is arranged at the outer side of the base, the cover body is fixedly arranged at the rear end of the base and is surrounded by the groove body to form a second flow channel, the first end of the second flow channel is communicated with the first end of the second flow channel, and the second end of the second flow channel is communicated with the first end of the second flow channel, and the inner diameter of the diffusion cavity is larger than the second end of the second flow channel. The centrifugal spray head structure comprises an annular cavity, two ends of the annular cavity are respectively communicated with a second end of the diffusion cavity and an outer space of the base, the diffusion walls are uniformly arranged around the center of the first flow channel at intervals, the positions of the diffusion walls correspond to the outer side of the annular cavity, the front end of the inner side of the diffusion wall is connected to the outer side of the base, and the rear end of the inner side of the diffusion wall is connected to the outer side of the base, wherein the diffusion walls are located on the corresponding diffusion walls along the projection of the diffusion cavities on the axial direction of the diffusion walls. The diffusion wall and the cover body are integrally formed, and the front end of the inner side of the diffusion wall is welded with the base. The base is a disc, the first flow channel is arranged in the center of the base, and the second flow channel is perpendicular to the first flow channel. The further technical scheme is that the front end of the base extends out of the connecting part. The utility model also discloses a desuperheater which comprises a first pipeline, a second pipeline and a centrifugal spray head structure, wherein a third flow passage is formed in the interior of the first pipeline, a first end of the second pipeline penetrates through the first pipeline and stretches into the third flow passage, a fourth flow passage is formed in the interior of the second pipeline, the centrifugal spray head structure is connected to the rear side of the first end of the second pipeline, the front end of the first flow passage is communicated with the second end of the fourth flow passage, and the diffusion cavity is communicated with the third flow passage. The further technical scheme is that the rear side of the second end of the second pipeline is provided with a threaded hole, and the connecting part is in threaded connection with t