CN205426247U - Bayonet flow detection device - Google Patents
Bayonet flow detection device Download PDFInfo
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- CN205426247U CN205426247U CN201521047864.5U CN201521047864U CN205426247U CN 205426247 U CN205426247 U CN 205426247U CN 201521047864 U CN201521047864 U CN 201521047864U CN 205426247 U CN205426247 U CN 205426247U
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- venturi tube
- pressure pipe
- fluid pressure
- detection device
- throat
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Abstract
The utility model discloses a bayonet flow detection device, through the pipeline is inside predetermines that the position sets up along the axial of being surveyed the pipeline and the diameter is less than the venturi who is surveyed the pipeline being surveyed, first the getting that sets up the intercommunication in venturi's entrance department presses the pipe to acquire the fluid pressure through venturi's entrance, the second that sets up the intercommunication in venturi's throat is got and is pressed the pipe to acquire the fluid pressure through venturi's throat, and thereby the fluid pressure of the fluid pressure of the venturi's who acquires the aforesaid entrance and throat sends to differential pressure transmitter and acquires fluidic differential pressure value, the size is small, the installation is nimble convenient, the production cost is low, realized in big pipe diameter and the requirement of the limited circumstances lowered flow measuring of mounted position, the problem of standard venturi among the prior art be difficult to measure the technique of using at big pipe diameter and the limited circumstances lowered flow of mounted position is solved.
Description
Technical field
This utility model relates to flow detection device technical field, in particular to a kind of plug-in type flow detection device.
Background technology
The at present uninterrupted of widely used standard Venturi measuring fluid in industry measurement, standard Venturi tube has that certainty of measurement is high, crushing is little, stable performance and advantage easy to maintenance.But in order to ensure the accuracy measured, the caliber of standard Venturi tube is identical with the caliber of tested pipeline, simultaneously, 5 times of a length of tested pipeline caliber of standard Venturi tube, meanwhile, tested pipeline installs the upstream and downstream at the position of standard Venturi tube, especially upstream needs to keep the straight length of equivalent length, 15 times of a length of tested pipeline caliber of general straight length, thus ensure that the rate of flow of fluid at the position of tested pipeline installation standard Venturi tube is stable, thus improve the accuracy of measurement.But when actually used, if tested pipeline caliber is bigger, then the corresponding caliber of standard Venturi tube, length and reserved flow development length all can be the biggest, on the one hand its manufacturing cost can be the highest, on the other hand, for the restriction of operating mode scene pipeline arrangement space, standard Venturi tube is applied in the case of being difficult to this.
It is difficult on Large Diameter Pipeline tested pipeline the technical problem of application for existing standard Venturi tube, the most not yet proposes effective solution.
Summary of the invention
This utility model embodiment provides a kind of plug-in type flow detection device, the technical problem applied at least to solve existing standard Venturi tube to be difficult on Large Diameter Pipeline tested pipeline.
According to this utility model embodiment, it is provided that a kind of plug-in type flow detection device, including: Venturi tube, along the predeterminated position being axially set within tested pipeline of tested pipeline, wherein, the diameter of Venturi tube is less than the diameter of tested pipeline；First pressure pipe, the first end of the first pressure pipe connects with the porch of Venturi tube, for obtaining the fluid pressure of the porch by Venturi tube；Second pressure pipe, the first end of the second pressure pipe connects with the throat of Venturi tube, for obtaining the fluid pressure of the throat by Venturi tube；Differential pressure transmitter, is connected with the second end of the first pressure pipe and the second end of the second pressure pipe respectively, is used for the difference of the fluid pressure obtaining the porch of Venturi tube and the fluid pressure of the throat of Venturi tube.
Further, predeterminated position is at the mean flow rate point of tested pipeline cross section.
Further, the side tube wall that the predeterminated position of tested pipeline is relative being provided with through hole, wherein, the first pressure pipe and the second pressure pipe are connected through through hole with Venturi tube.
Further, the open outer side of through hole is provided with end cap, and for being sealed by through hole, wherein, the body of the first pressure pipe and the body of the second pressure pipe are fixedly connected on end cap.
Further, the open outer side of through hole is provided with Flange joint seat, and end cap is removably disposed on Flange joint seat.
Further, plug-in type flow detection device also includes: processor, is connected with differential pressure transmitter, and the mathematic interpolation of the fluid pressure being used for the fluid pressure of the porch according to Venturi tube and the throat of Venturi tube obtains the flow of the fluid in tested pipeline.
The plug-in type flow detection device of application technical solutions of the utility model, by arranging the Venturi tube being less than tested pipeline along the axial of tested pipeline and diameter at the predeterminated position within tested pipeline, the first pressure pipe arranging connection in the porch of Venturi tube obtains the fluid pressure of the porch by Venturi tube；Throat in Venturi tube arranges the second pressure pipe acquisition of the connection fluid pressure by the throat of Venturi tube, and the fluid pressure of the porch of the Venturi tube of above-mentioned acquisition and the fluid pressure transmission of throat to differential pressure transmitter thus are obtained the difference of the fluid pressure of the porch of Venturi tube and the fluid pressure of the throat of Venturi tube, and then obtain the flow of fluid in tested pipeline, volume is little, convenient and flexible installation, low cost of manufacture, achieve the application on Large Diameter Pipeline tested pipeline, solve standard Venturi tube of the prior art and be difficult on Large Diameter Pipeline tested pipeline the technical problem of application.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to this utility model embodiment optional plug-in type flow detection device；
Fig. 2 is the cross section attachment structure schematic diagram according to this utility model embodiment optional a kind of plug-in type flow detection device；
Fig. 3 is the structural representation of the connecting rod according to this utility model embodiment optional plug-in type flow detection device.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that this utility model scheme, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of this utility model part rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should belong to the scope of this utility model protection.
According to this utility model embodiment, provide a kind of plug-in type flow detection device, as shown in Figure 1, including: Venturi tube the 1, first pressure pipe the 2, second pressure pipe 3 and differential pressure transmitter 4, Venturi tube 1 is axially set in the predeterminated position within tested pipeline 5 along tested pipeline 5, wherein, the diameter of Venturi tube 1 is less than the diameter of tested pipeline 5；First end of the first pressure pipe 2 connects with the porch of Venturi tube 1, for obtaining the fluid pressure of the porch by Venturi tube 1；First end of the second pressure pipe 3 connects with the throat of Venturi tube 1, for obtaining the fluid pressure of the throat by Venturi tube 1；Differential pressure transmitter 4 is connected with the second end of the first pressure pipe 2 and the second end of the second pressure pipe 3 respectively, is used for the difference of the fluid pressure obtaining the porch of Venturi tube 1 and the fluid pressure of the throat of Venturi tube 1.
The plug-in type flow detection device of application technical solutions of the utility model, by arranging the Venturi tube 1 being less than tested pipeline 5 along the axial of tested pipeline 5 and diameter at the predeterminated position within tested pipeline 5, the first pressure pipe 2 arranging connection in the porch of Venturi tube 1 obtains the fluid pressure of the porch by Venturi tube 1；Throat in Venturi tube 1 arranges the second pressure pipe 3 of connection and obtains the fluid pressure of the throat by Venturi tube 1, and the fluid pressure of the porch of the Venturi tube 1 of above-mentioned acquisition and the fluid pressure transmission of throat to differential pressure transmitter 4 thus are obtained the difference of the fluid pressure of the porch of Venturi tube 1 and the fluid pressure of the throat of Venturi tube 1, again by Theoretical Calculation and real fixed method of failing to be sold at auction, obtain the functional relationship of its differential pressure value and whole flow field, thus calculate the flow of detection, and then obtain the flow of fluid in tested pipeline 5, it is little that it has volume, convenient and flexible installation, the advantage of low cost of manufacture, achieve the application on Large Diameter Pipeline tested pipeline 5, solve standard Venturi tube of the prior art and be difficult on Large Diameter Pipeline tested pipeline the technical problem of application.
When being embodied as, the Venturi tube 1 of this utility model embodiment is relative to the Venturi tube of standard, its caliber and length are respectively less than standard Venturi tube, thus reduce certainty of measurement to a certain extent, it is mainly used in fluid flow certainty of measurement is less demanding, flow detector installing space is little place.In concrete installation process, in order to improve certainty of measurement substantially, it is preferable that as in figure 2 it is shown, Venturi tube 1 is arranged at the mean flow rate point of tested pipeline 5 cross section, thus reduce flow velocity instability in tested pipeline and cause certainty of measurement to reduce.
For the ease of installing on tested pipeline 5, as it is shown in figure 1, be provided with through hole 51 on the side tube wall of tested pipeline 5 corresponding to the installation site of Venturi tube 1, wherein, the first pressure pipe 2 and the second pressure pipe 3 are connected through through hole 51 with Venturi tube 1.In order to the first pressure pipe 2 and the second pressure pipe 3 are reinforced, as it is shown on figure 3, be additionally provided with wing connecting rod 9 in the periphery of the first pressure pipe 2 and the second pressure pipe 3.
The open outer side of through hole 51 is provided with end cap 6, and end cap 6 is for sealing through hole 51, and wherein, the body of the first pressure pipe 2 and the body of the second pressure pipe 3 are fixedly connected on end cap 6.In order to make end cap 6 readily accessible, the open outer side at through hole 51 is provided with Flange joint seat 7, and end cap 6 is removably disposed on Flange joint seat 7, consequently facilitating dismounting Venturi tube the 1, first pressure pipe 2 and the second pressure pipe 3.
After the difference of the fluid pressure that differential pressure transmitter 4 obtains the fluid pressure of the porch of Venturi tube 1 and the throat of Venturi tube 1, use Bernoulli equation manually can calculate the flow of tested pipeline 5 according to the relation of differential pressure and flow.In order to the measurement making flow is more convenient, it is additionally provided with the processor 8 being connected with differential pressure transmitter 4, after the difference of the fluid pressure that differential pressure transmitter 4 obtains the fluid pressure of the porch of Venturi tube 1 and the throat of Venturi tube 1, differential pressure data is sent to processor 8, processor 8 can be Flow Meter Based or computer, processor 8 be directly calculated the flow of tested pipeline 5 according to default mathematical algorithm.
Below it is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. a plug-in type flow detection device, it is characterised in that including:
Venturi tube, along the predeterminated position within described tested pipeline that is axially set in of tested pipeline, wherein, the diameter of described Venturi tube is less than the diameter of described tested pipeline；
First pressure pipe, the first end of described first pressure pipe connects with the entrance of described Venturi tube, for obtaining the fluid pressure of the entrance by described Venturi tube；
Second pressure pipe, the first end of described second pressure pipe connects with the throat of described Venturi tube, for obtaining the fluid pressure of the throat by described Venturi tube；
Differential pressure transmitter, the second end with the second end of described first pressure pipe and described second pressure pipe is connected respectively, is used for the difference of the fluid pressure obtaining the entrance of described Venturi tube and the fluid pressure of the throat of described Venturi tube.
Plug-in type flow the most according to claim 1 detection device, it is characterised in that described predeterminated position is at the mean flow rate point of described tested pipeline cross section.
Plug-in type flow the most according to claim 1 detection device, it is characterized in that, being provided with through hole on the side tube wall that the described predeterminated position of described tested pipeline is relative, wherein, described first pressure pipe and described second pressure pipe are connected through described through hole with described Venturi tube.
Plug-in type flow the most according to claim 3 detection device, it is characterized in that, the open outer side of described through hole is provided with end cap, for being sealed by described through hole, wherein, the body of described first pressure pipe and the body of described second pressure pipe are fixedly connected on described end cap.
Plug-in type flow the most according to claim 4 detection device, it is characterised in that the open outer side of described through hole is provided with Flange joint seat, and described end cap is removably disposed on described Flange joint seat.
Plug-in type flow the most according to claim 1 detection device, it is characterised in that described plug-in type flow detection device also includes:
Flow Meter Based or computer, be connected with described differential pressure transmitter, and the mathematic interpolation of the fluid pressure being used for the fluid pressure of the porch according to described Venturi tube and the throat of described Venturi tube obtains the flow of the fluid in described tested pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047864.5U CN205426247U (en) | 2015-12-14 | 2015-12-14 | Bayonet flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521047864.5U CN205426247U (en) | 2015-12-14 | 2015-12-14 | Bayonet flow detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205426247U true CN205426247U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521047864.5U Expired - Fee Related CN205426247U (en) | 2015-12-14 | 2015-12-14 | Bayonet flow detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205426247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869748A (en) * | 2017-12-01 | 2019-06-11 | 博西华电器（江苏）有限公司 | Gas-cooker and its control method |
-
2015
- 2015-12-14 CN CN201521047864.5U patent/CN205426247U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869748A (en) * | 2017-12-01 | 2019-06-11 | 博西华电器（江苏）有限公司 | Gas-cooker and its control method |
| CN109869748B (en) * | 2017-12-01 | 2022-02-11 | 博西华电器（江苏）有限公司 | Gas stove and control method thereof |
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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: 20160803 Termination date: 20181214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |