CN209181843U - A kind of Venturi nozzle experimental provision - Google Patents
A kind of Venturi nozzle experimental provision Download PDFInfo
- Publication number
- CN209181843U CN209181843U CN201821898409.XU CN201821898409U CN209181843U CN 209181843 U CN209181843 U CN 209181843U CN 201821898409 U CN201821898409 U CN 201821898409U CN 209181843 U CN209181843 U CN 209181843U
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- CN
- China
- Prior art keywords
- venturi nozzle
- pipe
- measurement pipe
- pressure
- throttling element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of Venturi nozzle experimental provision, connecting flange by locating slot is positioned at the left and right ends of measurement pipe and including inlet flange and outlet(discharge) flange；Venturi nozzle throttling element sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe, and neck offers rear pressure tappings, and pressure chamber after offering the annular being connected to rear pressure tappings with measurement pipe junction, rear pressure chamber is connected with rear pressure obtaning device；It is put after pipe butts up against Venturi nozzle throttling element afterwards and puts a mouthful end, sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe；Measurement pipe inner seal sleeve between inlet flange and Venturi nozzle throttling element is equipped with preceding pressure pipe, preceding pressure pipe side wall offers preceding pressure tappings, pressure chamber before preceding pressure pipe offers the annular being connected to preceding pressure tappings with measurement pipe junction, preceding pressure chamber is connected with preceding pressure obtaning device, can improve that Venturi nozzle experimental prototype production quantity is more, at high cost and model machine process-cycle is long, consistency difference problem.
Description
Technical field
The utility model relates to instrument industry technical field, in particular to a kind of Venturi nozzle experimental provision.
Background technique
In instrument industry, Venturi nozzle is only limited to introduction and application in a standard, the design feature of Venturi nozzle
The exploitation of research and Related product for two-phase flow flow measurement has great importance.
When fluid media (medium) reaches Venturi nozzle throttling element by measurement pipe, velocity of medium is higher than pipeline internal medium stream
Speed, before throttling element pressure obtaning device obtain pressure be greater than after throttling element pressure obtaning device obtain pressure, front and back pressure difference I
Conventional differential pressure and the rate-of flow of being called at evolution relationship, medium passes through reach after throttling element after discharge hole, rear discharge hole part has
Certain taper gradually amplifies until identical as internal diameter of the pipeline.
The ratio in Venturi nozzle throttling element aperture and internal diameter of the pipeline, we are called aperture ratio, and the size of aperture ratio is with after
The size of discharge hole taper, extremely important to the research of two-phase flow flow measurement, the differential pressure of the small generation of aperture ratio is big, rear discharge hole angle
The small pressure loss is small.It is a large amount of it is necessary to do to meet the requirement of two-phase flow flow measurement to find an ideal ratio and taper
Test go to verify.
The different aperture ratio of the Venturi nozzle model machine of same internal diameter of the pipeline is made in reality, and angle variation is put after different,
Can only using make various apertures it is when different after put the Venturi nozzle at angle and realize, at high cost, the processing of prototype fabrication
Period is long, consistency is poor.
In conclusion how to improve to the structure of existing Venturi nozzle experimental provision, improve experimental prototype system
Make that quantity is more, at high cost and model machine process-cycle is long, consistency difference problem, it is urgently to be resolved to become those skilled in the art
Technical problem.
Utility model content
The purpose of the utility model is to provide a kind of Venturi nozzle experimental provisions, can improve Venturi nozzle experiment sample
Machine production quantity is more, the at high cost and model machine process-cycle is long, consistency difference problem.
In order to solve the above technical problems, the utility model provides following technical solution:
A kind of Venturi nozzle experimental provision, including connecting flange, measurement pipe, Venturi nozzle throttling element, after put pipe, preceding
Pressure obtaning device and rear pressure obtaning device, the connecting flange by locating slot are positioned at the left and right ends of measurement pipe and including entrance methods
Blue and outlet(discharge) flange, inlet flange and outlet(discharge) flange are fixed on the both ends of measurement pipe by tie-rod sealing；The Venturi nozzle
Throttling element sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe, and the neck of Venturi nozzle throttling element takes after offering
Press mouth, pressure chamber after the Venturi nozzle throttling element offers the annular being connected to rear pressure tappings with measurement pipe junction, institute
Rear pressure chamber is stated to be connected with rear pressure obtaning device；It is put after described after pipe butts up against Venturi nozzle throttling element and puts a mouthful end, sealing shroud
It is to be slidably matched in measurement pipe and with measurement pipe；In measurement pipe between the inlet flange and Venturi nozzle throttling element
Sealing shroud is equipped with preceding pressure pipe, and the preceding pressure pipe side wall offers preceding pressure tappings, and preceding pressure pipe is opened up with measurement pipe junction
There is pressure chamber before the annular being connected to preceding pressure tappings, the preceding pressure chamber is connected with preceding pressure obtaning device.
Preferably, the rear pressure tappings are provided with the multiple and circumferential neck for being distributed in Venturi nozzle throttling element；It is described
Preceding pressure tappings are provided on the multiple and circumferential side wall for being distributed in preceding pressure pipe.
Preferably, the preceding pressure pipe, Venturi nozzle throttling element and after put pipe, between measurement pipe by sealing ring it is close
Envelope.
Preferably, sealing ring is set between the inlet flange and outlet(discharge) flange, with measurement pipe.
Venturi nozzle experimental provision provided by the utility model, by Venturi nozzle throttling element, after put pipe and be set to
Relative measurement pipe dismountable structure is only right when putting angle with after according to the aperture that requirement of experiment changes Venturi nozzle throttling element
The setting length for putting pipe afterwards has an impact, therefore does after primary test only needs to process a Venturi nozzle throttling element and one and put
Pipe, only accounts for the 1/5 of whole Venturi nozzle experimental provision cost, while can eliminate measurement pipe, pressure obtaning device to conclusion (of pressure testing)
Influence, so as to solve, Venturi nozzle experimental prototype production quantity is more, at high cost and model machine process-cycle is long, consistent
Property difference problem.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure sectional view of Venturi nozzle experimental provision provided by the utility model.
In figure: 1, measurement pipe；2, Venturi nozzle throttling element；21, rear pressure tappings；22, rear pressure chamber；3, pipe is put after；4,
Preceding pressure obtaning device；5, rear pressure obtaning device；61, inlet flange；62, outlet(discharge) flange；7, preceding pressure pipe；8, preceding pressure tappings；9, preceding to take
Press chamber.
Specific embodiment
The core of the utility model is to provide a kind of Venturi nozzle experimental provision, can improve Venturi nozzle experiment sample
Machine production quantity is more, the at high cost and model machine process-cycle is long, consistency difference problem.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Incorporated by reference to Fig. 1, Fig. 1 is the structure sectional view of Venturi nozzle experimental provision provided by the utility model.
Venturi nozzle experimental provision provided by the utility model, including connecting flange, measurement pipe 1, Venturi nozzle
Throttling element 2, after put pipe 3, preceding pressure obtaning device 4 and rear pressure obtaning device 5, connecting flange is positioned at the left and right of measurement pipe by locating slot
Both ends and including inlet flange 61 and outlet(discharge) flange 62, inlet flange and outlet(discharge) flange are fixed on measurement pipe by tie-rod sealing
Both ends；Venturi nozzle throttling element sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe, Venturi nozzle throttling element
Neck offer rear pressure tappings 21, Venturi nozzle throttling element offers the ring being connected to rear pressure tappings with measurement pipe junction
Pressure chamber 22 after shape, rear pressure chamber are connected with rear pressure obtaning device；It is put after pipe butts up against Venturi nozzle throttling element afterwards and puts a mouthful end,
Sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe；Measurement pipe between inlet flange and Venturi nozzle throttling element
Inner seal sleeve is equipped with preceding pressure pipe 7, and preceding pressure pipe side wall offers preceding pressure tappings 8, and preceding pressure pipe is opened up with measurement pipe junction
There is pressure chamber 9 before the annular being connected to preceding pressure tappings, preceding pressure chamber is connected with preceding pressure obtaning device.
Specifically, inlet flange 61 and outlet(discharge) flange 62 are correspondingly arranged on eight groups of flange holes, wherein four groups are drawn for installing
Bar, realize flange 61 and outlet(discharge) flange 62 be fixedly connected and integrally-built stabilization, be in addition used for and measurement pipe two for four groups
The pipeline joint at end is installed and used.
Venturi nozzle experimental provision provided by the utility model, by Venturi nozzle throttling element, after put pipe and be set to
Relative measurement pipe dismountable structure is only right when putting angle with after according to the aperture that requirement of experiment changes Venturi nozzle throttling element
The setting length for putting pipe afterwards has an impact, therefore does after primary test only needs to process a Venturi nozzle throttling element and one and put
Pipe, only accounts for the 1/5 of whole Venturi nozzle experimental provision cost, while can eliminate measurement pipe, pressure obtaning device to conclusion (of pressure testing)
Influence, so as to solve, Venturi nozzle experimental prototype production quantity is more, at high cost and model machine process-cycle is long, consistent
Property difference problem.
In order to advanced optimize technical solution, Venturi nozzle experimental provision provided by the utility model, rear pressure tappings
It is provided with the multiple and circumferential neck for being distributed in Venturi nozzle throttling element；Preceding pressure tappings be provided with it is multiple and it is circumferential be distributed in front of
On the side wall of pressure pipe.
Specifically, in Venturi nozzle experimental provision, preceding pressure pipe, Venturi nozzle throttling element and after put pipe, with measurement
It is sealed between pipe by sealing ring；Sealing ring is set between inlet flange and outlet(discharge) flange, with measurement pipe, above-mentioned sealing structure
The leakproofness for guaranteeing integral experiment device is set, and then guarantees the accuracy of experimental data.
A kind of Venturi nozzle experimental provision provided by the utility model is described in detail above.It answers herein
The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides
Assistant solves the method and its core concept of the utility model.It should be pointed out that for those skilled in the art,
Without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these improvement
It is also fallen into the protection scope of the utility model claims with modification.
Claims (4)
1. a kind of Venturi nozzle experimental provision, including connecting flange, measurement pipe, Venturi nozzle throttling element, after put pipe, preceding take
Pressure device and rear pressure obtaning device, which is characterized in that the connecting flange by locating slot be positioned at measurement pipe left and right ends and
Including inlet flange and outlet(discharge) flange, inlet flange and outlet(discharge) flange are fixed on the both ends of measurement pipe by tie-rod sealing；It is described
Venturi nozzle throttling element sealing shroud is set in measurement pipe and is to be slidably matched with measurement pipe, the neck of Venturi nozzle throttling element
Rear pressure tappings are offered, after the Venturi nozzle throttling element offers the annular being connected to rear pressure tappings with measurement pipe junction
Pressure chamber, the rear pressure chamber are connected with rear pressure obtaning device；It is put after described after pipe butts up against Venturi nozzle throttling element and puts mouth
End, sealing shroud are set in measurement pipe and are to be slidably matched with measurement pipe；Between the inlet flange and Venturi nozzle throttling element
Measurement pipe inner seal sleeve be equipped with preceding pressure pipe, the preceding pressure pipe side wall offers preceding pressure tappings, preceding pressure pipe and measurement pipe
Junction offers pressure chamber before the annular being connected to preceding pressure tappings, and the preceding pressure chamber is connected with preceding pressure obtaning device.
2. Venturi nozzle experimental provision as described in claim 1, which is characterized in that it is described after pressure tappings be provided with it is multiple and
Circumferentially it is distributed in the neck of Venturi nozzle throttling element；The preceding pressure tappings are provided with multiple and are circumferentially distributed in preceding pressure pipe
On side wall.
3. Venturi nozzle experimental provision as described in claim 1, which is characterized in that the preceding pressure pipe, Venturi nozzle
Throttling element and after put pipe, between measurement pipe pass through sealing ring seal.
4. Venturi nozzle experimental provision as described in claim 1, which is characterized in that the inlet flange and outlet(discharge) flange,
Sealing ring is set between measurement pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821898409.XU CN209181843U (en) | 2018-11-19 | 2018-11-19 | A kind of Venturi nozzle experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821898409.XU CN209181843U (en) | 2018-11-19 | 2018-11-19 | A kind of Venturi nozzle experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209181843U true CN209181843U (en) | 2019-07-30 |
Family
ID=67373183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821898409.XU Expired - Fee Related CN209181843U (en) | 2018-11-19 | 2018-11-19 | A kind of Venturi nozzle experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209181843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849428A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Cabin current-limiting and flow testing combined device for airplane |
| CN112067087A (en) * | 2020-08-13 | 2020-12-11 | 镇江市计量检定测试中心 | Gas flow standard device capable of adjusting centering of sonic nozzle |
-
2018
- 2018-11-19 CN CN201821898409.XU patent/CN209181843U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849428A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Cabin current-limiting and flow testing combined device for airplane |
| CN112067087A (en) * | 2020-08-13 | 2020-12-11 | 镇江市计量检定测试中心 | Gas flow standard device capable of adjusting centering of sonic nozzle |
| CN112067087B (en) * | 2020-08-13 | 2021-04-13 | 镇江市计量检定测试中心 | Gas flow standard device capable of adjusting centering of sonic nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 Termination date: 20211119 |