CN202869560U - Integrated venturi nozzle - Google Patents
Integrated venturi nozzle Download PDFInfo
- Publication number
- CN202869560U CN202869560U CN 201220555651 CN201220555651U CN202869560U CN 202869560 U CN202869560 U CN 202869560U CN 201220555651 CN201220555651 CN 201220555651 CN 201220555651 U CN201220555651 U CN 201220555651U CN 202869560 U CN202869560 U CN 202869560U
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- China
- Prior art keywords
- venturi nozzle
- pressure pipe
- pipe
- section
- monoblock type
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- Expired - Fee Related
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Abstract
The utility model discloses an integrated venturi nozzle which comprises a pipe body. A fluid inlet section, a contraction section, a cylindrical throat portion, a diffusion section and a fluid outlet section are arranged in the pipe body in sequence. A positive pressure pipe is arranged on the wall of the fluid inlet section of the pipe body, a negative pressure pipe is arranged on the wall of the cylindrical throat portion of the pipe body, the positive pressure pipe and the negative pressure pipe are communicated with the inside of the pipe body through two through holes in the pipe wall, and the portions, located at the through hole positions, of the positive pressure pipe and the negative pressure pipe are welded on the outer wall of the pipe body. The integrated venturi nozzle has the advantages of being simple in structure, convenient to mount and wide in application. Pressure loss in the integrated venturi nozzle is small, and the required length of a straight pipe section is short. The whole length is much shorter than that of a venturi pipe. The integrated venturi nozzle is especially suitable for being used in conditions that a mounting position is compact.
Description
Technical field
The utility model relates to a kind of Venturi nozzle, is specifically related to a kind of monoblock type Venturi nozzle.
Background technology
The advantages such as Venturi nozzle has very important effect as traditional measurement mechanism in flow measurement, it has the high temperature resistance high pressure, and the pressure loss is little, measures accurately, and the life-span is long.The structure of tradition Venturi nozzle is divided into front pressure section, middle carrying section, middle pressure section, rear linkage section, connects with securing members such as bolts each other.In manufacturing process, the junction is more, and it is higher to make requirement, and error is also just larger, and the junction is many, and the instability factor of generation is also just many, and for example connecting staggered is revealed etc.The most fluid metering all is to adopt the throttling devices such as orifice plate, nozzle, Venturi nozzle, is widely used in the measurement of pipeline fluid flow with its stable performance, accurate measurement, the GB/T2624-2006 national standard.The IS05167-1 international standard all has it to manufacture and design standard, and known nozzle, Venturi nozzle structure all adopt separate type, still has weak point when reality is used, and main manifestations is:
1, adopt the corner connection pressure, holding ring or flange are isolating construction;
2, adopt the separate type of flange ring casing pressure;
3, separate type easily causes clamping ring casing, pressure flange and nozzle can not keep being offset with one heart;
4, pad is charged into easily the sealing surface internal diameter and is affected measurement;
5, pad is blocked easily and is measured pressure tappings or annular space;
6, the installation positioning difficulty is large, produces easily Steps.
The utility model content
The purpose of this utility model is to overcome the defective that exists in the prior art, and a kind of Venturi nozzle of simple in structure, good stability is provided.
For achieving the above object, the technical solution of the utility model is a kind of monoblock type Venturi nozzle of design, it is characterized in that, described nozzle comprises body, in described body, establish successively fluid intake section, contraction section, cylindrical shape throat, diffuser and fluid egress point section, described body is provided with positive pressure pipe at the tube wall of fluid intake section, and described body is provided with negative pressure pipe at the tube wall of cylindrical shape throat.
Wherein preferred technical scheme is, described positive pressure pipe and negative pressure pipe be by being arranged on through hole and the body internal communication on the tube wall, and described positive pressure pipe and negative pressure pipe are welded on the outer wall of body at the position of described through hole.
Preferred technical scheme also has, and the inwall of described contraction section is globoidal structure, seamlessly transits between described contraction section and the cylindrical shape throat.
Preferred technical scheme also has, the described diffuser interior bell-mouth structure of air to external diffusion of serving as reasons, and the cone angle of described diffuser is 20
0~ 30
0
Preferred technical scheme also has, and is provided with outer chamfering and/or interior chamfering in the end of described body.
Advantage of the present utility model and beneficial effect are: this monoblock type Venturi nozzle has following features:
1, monolithic construction has changed the separate type form, has guaranteed ring casing, nozzle, literary composition
The concentricity of nozzle and pipeline in the mound;
2, strong assurance and prevent that pad from blocking pressure tappings and annular space guarantees that pad can not dash forward
Enter in the ring casing;
3, effectively solved roughness in the 0.5 ~ 2D scope of process pipe upstream, improved
Accuracy and the precision measured;
4, adopt the Double End concave structure, guaranteed that effectively pad can not charge in the pipeline,
Prevent poorly sealed and leakage that produce;
5, accurate positioning, simple and convenient is installed, having guaranteed has the accuracy that is connected with pipeline
Effect prevents from misplacing, the generation of step.
Description of drawings
Fig. 1 is the structural representation of the utility model monoblock type Venturi nozzle.
Among the figure: 1, fluid intake section; 2, contraction section; 3, cylindrical shape throat; 4, diffuser; 5, fluid egress point section; 6, positive pressure pipe; 7, negative pressure pipe; 8, through hole.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in the figure, the utility model is a kind of monoblock type Venturi nozzle, this nozzle comprises body, in described body, establish successively fluid intake section 1, contraction section 2, cylindrical shape throat 3, diffuser 4 and fluid egress point section 5, described body is provided with positive pressure pipe 6 at the tube wall of fluid intake section 1, and described body 1 is provided with negative pressure pipe 7 at the tube wall of cylindrical shape throat 3.
Preferred embodiment is in the utility model, and described positive pressure pipe 6 and negative pressure pipe 7 are by being arranged on the through hole 8 and body 1 internal communication on the tube wall, and described positive pressure pipe 6 is welded on the outer wall of body 1 at the position of described through hole 8 with negative pressure pipe 7.
Preferred embodiment also has in the utility model, and the inwall of described contraction section 2 is globoidal structure, seamlessly transits between described contraction section 2 and the cylindrical shape throat 3.
Preferred embodiment also has in the utility model, the described diffuser 4 interior bell-mouth structure of air to external diffusion of serving as reasons, and the cone angle of described diffuser 4 is 20
0~ 30
0
Preferred embodiment also has in the utility model, is provided with outer chamfering and/or interior chamfering in the end of described body 1.
This monoblock type Venturi nozzle has:
1, simple in structure, easy for installation, be widely used.
2, the pressure loss of monoblock type Venturi nozzle is little, requires flow development length also short.
3, all-in-one-piece Length Ratio Venturi tube much shorter.Compact occasion is especially applicable in the installation site.
4, need not the verification of real stream, stable performance, reliability is high.
But 5 high temperature high voltage resistants are because it adopts whole processing, so especially can shock-resistant and reverse flow recoil.
6, decay resistance is better than orifice plate, and the life-span is long.
7, the arcuate structure design can be measured various liquid, gas, steam and various dirty medium.
8, precision height, good reproducibility, efflux coefficient are stablized.
9, can be used for the Large Diameter Pipeline measurement of fluid flow.
This monoblock type Venturi nozzle requires that the upstream and downstream straight length is short, the pressure loss is little, stable performance, easy to maintenance, is widely used in the industries such as oil, chemical industry, electric power, metallurgy, sewage measurement.
The monoblock type Venturi nozzle is mainly formed a whole by contraction section, cylindrical shape throat and diffuser, adopts whole wear-resisting forging one processing, makes the Venturi nozzle structure compacter, has increased compressive resistance.
The monoblock type Venturi nozzle is applicable to require to avoid the occasion of pressure and energy loss.Its Pressure Loss Ratio throttle orifice stops up suddenly the crushing that causes will lack 80%.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. monoblock type Venturi nozzle, it is characterized in that, described nozzle comprises body, in described body, establish successively fluid intake section, contraction section, cylindrical shape throat, diffuser and fluid egress point section, described body is provided with positive pressure pipe at the tube wall of fluid intake section, and described body is provided with negative pressure pipe at the tube wall of cylindrical shape throat.
2. such as the described monoblock type Venturi nozzle of claim l, it is characterized in that, described positive pressure pipe and negative pressure pipe be by being arranged on through hole and the body internal communication on the tube wall, and described positive pressure pipe and negative pressure pipe are welded on the outer wall of body at the position of described through hole.
3. such as the described monoblock type Venturi nozzle of claim l, it is characterized in that the inwall of described contraction section is globoidal structure, seamlessly transit between described contraction section and the cylindrical shape throat.
4. monoblock type Venturi nozzle as claimed in claim 1 is characterized in that, the described diffuser interior bell-mouth structure of air to external diffusion of serving as reasons, and the cone angle of described diffuser is 20
0~ 30
0
5. monoblock type Venturi nozzle as claimed in claim 1 is characterized in that, is provided with outer chamfering and/or interior chamfering in the end of described body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555651 CN202869560U (en) | 2012-10-27 | 2012-10-27 | Integrated venturi nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555651 CN202869560U (en) | 2012-10-27 | 2012-10-27 | Integrated venturi nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869560U true CN202869560U (en) | 2013-04-10 |
Family
ID=48036274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220555651 Expired - Fee Related CN202869560U (en) | 2012-10-27 | 2012-10-27 | Integrated venturi nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869560U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674130A (en) * | 2013-11-06 | 2014-03-26 | 江阴市节流装置厂有限公司 | Venturi tube |
| CN104475277A (en) * | 2014-11-12 | 2015-04-01 | 宁夏嘉翔自控技术有限公司 | Water mist outlet of Venturi water bath dust removal spray head of dust removal system of carbon electrode paste conveying system |
| CN107063364A (en) * | 2017-03-31 | 2017-08-18 | 上海科洋科技股份有限公司 | A kind of shrunk type Venturi meter |
| CN107764344A (en) * | 2016-08-16 | 2018-03-06 | 王子平 | For measuring the rectangle flowmeter of gas flow |
| CN108534848A (en) * | 2018-04-08 | 2018-09-14 | 江阴市节流装置厂有限公司 | A kind of the nuclear power flow measurement device and its installation method of single measurement pipe |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
| CN112378466A (en) * | 2020-11-20 | 2021-02-19 | 无锡锡州机械有限公司 | Venturi tube |
-
2012
- 2012-10-27 CN CN 201220555651 patent/CN202869560U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674130A (en) * | 2013-11-06 | 2014-03-26 | 江阴市节流装置厂有限公司 | Venturi tube |
| CN104475277A (en) * | 2014-11-12 | 2015-04-01 | 宁夏嘉翔自控技术有限公司 | Water mist outlet of Venturi water bath dust removal spray head of dust removal system of carbon electrode paste conveying system |
| CN107764344A (en) * | 2016-08-16 | 2018-03-06 | 王子平 | For measuring the rectangle flowmeter of gas flow |
| CN107063364A (en) * | 2017-03-31 | 2017-08-18 | 上海科洋科技股份有限公司 | A kind of shrunk type Venturi meter |
| CN108534848A (en) * | 2018-04-08 | 2018-09-14 | 江阴市节流装置厂有限公司 | A kind of the nuclear power flow measurement device and its installation method of single measurement pipe |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
| CN112378466A (en) * | 2020-11-20 | 2021-02-19 | 无锡锡州机械有限公司 | Venturi tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20181027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |