CN204365499U - Jet rose - Google Patents

Jet rose Download PDF

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Publication number
CN204365499U
CN204365499U CN201420289500.7U CN201420289500U CN204365499U CN 204365499 U CN204365499 U CN 204365499U CN 201420289500 U CN201420289500 U CN 201420289500U CN 204365499 U CN204365499 U CN 204365499U
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China
Prior art keywords
nozzle
area
annular region
jet
central area
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CN201420289500.7U
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Chinese (zh)
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许玉方
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许玉方
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Abstract

The utility model discloses a kind of jet rose, be suitable for being arranged in pipeline that fluid passes through, and transversal described pipeline, comprise the central area of the concyclic heart, annular region and neighboring area, at least one first jet is provided with in central area, annular region is around central area and in annular region, be provided with at least one second nozzle, and neighboring area is around annular region.The utility model can reduce the obstruction of conventional spout fluid flow, reduce fluid in the formation of being detained dead band, dirty medium can pass through very smoothly, the crushing before and after nozzle is greatly reduced when not affecting certainty of measurement, to the flow regime of upstream fluid almost without requiring, the nozzle made also than traditional is simple, is especially particularly suitable for the manufacture of heavy caliber throttling arrangement nozzle, has substantial degradation again to material cost.

Description

Jet rose
Technical field
The utility model belongs to the parts used on throttling arrangement, particularly a kind of jet rose.
Background technology
The flow detection part development of differential pressure flowmeter has had over one hundred year history, and more traditional is orifice plate and nozzle, and principle is substantially the same, and the pressure difference produced after flowing through detection piece by measurement fluid obtains flow.Nozzle is placed in pipeline, and the circular shaft heart of nozzle wants concentric with pipeline, and the circular arc entrance of nozzle is facing to direction of flow, fluid flows through from nozzle throat, produce pressure reduction in the front and back of nozzle, under effective medium state, this differential pressure can calculate instantaneous delivery value.
The use at traditional orifice plate and nozzle scene has a lot of requirement, first: stable differential pressure signal be obtained, long straight length is needed before orifice plate and nozzle, to obtain full-blown Turbulence Flow state, the internal diameter difference of tube wall and roughness all can have a strong impact on the degree of accuracy of the data of measurement.Second: traditional orifice plate and the Pressure Loss Ratio of nozzle are comparatively large, are unfavorable for energy-conservation.3rd: bore is larger, the dimensional thickness of conventional spout can be very large, and to the requirement of material, the waste of material processing can be very serious.
Summary of the invention
The purpose of this utility model is to provide a kind of jet rose, and it can manservant of an official's pressure transmitter composition flowmeter.
The technical solution realizing the utility model object is: a kind of jet rose, described nozzle is suitable for being arranged in the pipeline that fluid passes through, and transversal described pipeline, comprise the central area of the concyclic heart, annular region and neighboring area, at least one first jet is provided with in central area, annular region is around central area and in annular region, be provided with at least one second nozzle, and neighboring area is around annular region.
The utility model compared with prior art, its remarkable advantage: the utility model jet rose can reduce the obstruction of conventional spout fluid flow, reduce fluid in the formation of being detained dead band, dirty medium can pass through very smoothly, the crushing before and after nozzle is greatly reduced when not affecting certainty of measurement, to the flow regime of upstream fluid almost without requiring, the nozzle made also than traditional is simple, especially be particularly suitable for the manufacture of heavy caliber throttling arrangement nozzle, material cost is had substantial degradation again.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model jet rose.
Fig. 2 is the front view of a kind of concrete enforcement structure of the utility model jet rose.
Fig. 3 is the sectional view of a kind of concrete enforcement structure of the utility model jet rose.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of jet rose of the utility model, be suitable for being arranged in pipeline that fluid passes through, and transversal described pipeline, comprise the central area 1 of the concyclic heart, annular region 2 and neighboring area 3, at least one first jet 11 is provided with in central area 1, annular region 2 is around central area 1 and in annular region 2, be provided with at least one second nozzle 21, and neighboring area 3 is around annular region 2.
First ratio of the area of described first jet 11 throat opening area and central area, the second ratio of second nozzle 21 throat opening area and annular region area, the 3rd nozzle 31 throat opening area is identical with the 3rd ratio of the area of neighboring area.
At least one the 3rd nozzle 31 is provided with in described neighboring area 3.
Described first jet 11, second nozzle 21 and the 3rd nozzle 31 are circular.
Described central area 1 is circular, and annular region 2 is the annular around central area 1, and neighboring area 3 is the annular around annular region 2.
The center of circle of described first jet 11 is equally spaced distributed on a circle concentric with central area 1.
The center of circle of described second nozzle 21 is equally spaced distributed on a circle concentric with central area 1.
The center of circle of described 3rd nozzle 31 is equally spaced distributed on a circle concentric with central area 1.
Described jet rose, when oppositely using, also can obtain differential pressure, uses as throttling element.
The utility model merchandiser hole nozzle compares, and under obtaining same differential pressure conditions, negotiability improves a lot, and reduces irrecoverable crushing; Do not need the straight length of the conventional need grown very much, insensitive to eddy current in flow field above; Inconsistent insensitive to internal diameter of the pipeline; Special needs propose: nozzle thickness reduces doubly a lot, and the such as nozzle of 100 bores, adopts this jet rose can become several mm thickness from tens mm of original single-hole nozzle are thick, very save material.
Fig. 2,3 is specific embodiments of the present utility model, is provided with a nozzle in this jet rose central area 1, is provided with 6 nozzles in annular region 2, is provided with 12 nozzles in neighboring area 3.
Adopt the utility model scheme to make the differential flow measurement mechanism of a DN100 bore, a gas flow calibrating installation is tested, in flow standard device test, effect is very good, and it is as follows to lift one group of data:
Through calculating, the linearity error of flow coefficient k is 0.44%,
And for a traditional calibrating nozzle, even if in the ideal situation, media operation pressure, temperature, under the state that density is all constant,
Calculated the nozzle of a DN100 by criterion calculation software, air dielectric, 98KPa pressure, temperature 30 degree, relative humidity 47% obtains following data:
Discharge coefficient linear by C and be multiplied decision,
As calculated C with the linearity error be multiplied reaches 4.9%
If field working conditions is change, discharge coefficient linearity error will more strengthen.
So have obviously progress in the performance of flow measurement.

Claims (8)

1. a jet rose, be suitable for being arranged in pipeline that fluid passes through, and transversal described pipeline, it is characterized in that: comprise the central area (1) of the concyclic heart, annular region (2) and neighboring area (3), at least one first jet (11) is provided with in central area (1), annular region (2) is around central area (1) and be provided with at least one second nozzle (21) in annular region (2), and neighboring area (3) are around annular region (2).
2. jet rose according to claim 1, is characterized in that: be provided with at least one the 3rd nozzle (31) in described neighboring area (3).
3. jet rose according to claim 1 and 2, it is characterized in that: the ratio of described first jet (11) throat opening area and central area (1) area, the ratio of second nozzle (21) throat opening area and annular region (2) area, the 3rd nozzle (31) throat opening area is identical with the ratio of neighboring area (3) area.
4. jet rose according to claim 1 and 2, is characterized in that: described first jet (11), second nozzle (21) and the 3rd nozzle (31) are for circular.
5. jet rose according to claim 1, is characterized in that: described central area (1), for circular, annular region (2) is the annular around central area (1), and neighboring area (3) are the annular around annular region (2).
6. jet rose according to claim 1, is characterized in that: the center of circle of described first jet (11) is equally spaced distributed on a circle concentric with central area (1).
7. jet rose according to claim 1, is characterized in that: the center of circle of described second nozzle (21) is equally spaced distributed on a circle concentric with central area (1).
8. jet rose according to claim 2, is characterized in that: the center of circle of described 3rd nozzle (31) is equally spaced distributed on a circle concentric with central area (1).
CN201420289500.7U 2014-05-30 2014-05-30 Jet rose Active CN204365499U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420289500.7U CN204365499U (en) 2014-05-30 2014-05-30 Jet rose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420289500.7U CN204365499U (en) 2014-05-30 2014-05-30 Jet rose

Publications (1)

Publication Number Publication Date
CN204365499U true CN204365499U (en) 2015-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420289500.7U Active CN204365499U (en) 2014-05-30 2014-05-30 Jet rose

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CN (1) CN204365499U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977919A (en) * 2014-05-30 2014-08-13 许玉方 Multi-hole nozzle
CN105817352A (en) * 2016-04-25 2016-08-03 上海纳米技术及应用国家工程研究中心有限公司 Structuralized nozzle for atomic layer deposition (ALD)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977919A (en) * 2014-05-30 2014-08-13 许玉方 Multi-hole nozzle
CN105817352A (en) * 2016-04-25 2016-08-03 上海纳米技术及应用国家工程研究中心有限公司 Structuralized nozzle for atomic layer deposition (ALD)

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