CN207335789U - A kind of lift mean velocity tube flowmeter - Google Patents
A kind of lift mean velocity tube flowmeter Download PDFInfo
- Publication number
- CN207335789U CN207335789U CN201721164477.9U CN201721164477U CN207335789U CN 207335789 U CN207335789 U CN 207335789U CN 201721164477 U CN201721164477 U CN 201721164477U CN 207335789 U CN207335789 U CN 207335789U
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- Prior art keywords
- pipe
- pressure
- epimere
- hypomere
- flange
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Abstract
The utility model provides a kind of lift mean velocity tube flowmeter, including connecting flange and detection bar, detection bar has inner cavity, interior intracavitary is provided with stagnation pressure average pipe and static pressure fairlead, detection bar side offers flow hole, opposite side offers static pressure hole, the lower end of stagnation pressure average pipe offers the opening towards flow hole side, the lower end of static pressure fairlead is connected with static pressure hole, the top of connecting flange is provided with positive pressure guiding pipe and negative pressure guiding pipe, positive pressure guiding pipe is connected with the upper end of stagnation pressure average pipe, and negative pressure guiding pipe is connected with static pressure fairlead；Stagnation pressure average pipe includes epimere pipe and hypomere pipe, and the hypomere outer sheath of epimere pipe loads section pipe, is provided with electronic control cylinder on the outside of the epimere of epimere pipe, the connecting rod of electronic control cylinder is connected with hypomere pipe, and the outside of epimere pipe and hypomere pipe is set with telescopic sleeve jointly.Lift mean velocity tube flowmeter provided by the utility model, can adjust the relative position between the opening of stagnation pressure average pipe and flow hole, compatibility is strong, high certainty of measurement.
Description
Technical field
It the utility model is related to a kind of flowmeter, more particularly to a kind of lift mean velocity tube flowmeter of high certainty of measurement.
Background technology
At present, suitable for large diameter pipe flow measurement, i.e., applied to right in the industries such as water power, light textile, oil, metallurgy, chemical industry
The flowmeter of flow measurement and the control of the media such as liquid, gas, steam, usually using orifice flowmeter, but uses process
In abrasion, the factor such as greasy dirt dust of corrosion and adhesion makes the discharge coefficient of orifice plate increase so that orifice flowmeter measurement
It is not accurate enough, and orifice plate has the weld seam of 2 common long 1200mm.For man-hour, one orifice plate of installation usually required for 12 man-hours, pacified
Fill cumbersome, the permanent loss of general orifice plate will but account for the 40%~80% of differential pressure, when using orifice plate, the energy loss of 1 year
It is up to more than 20,000 yuan, not energy saving enough.
For the above situation, the flow used at present is calculated as mean velocity tube flowmeter, easy for assemble or unload, and the pressure loss is small,
Energy loss is few, but has a disadvantage in that：The aperture position of stagnation pressure average pipe is relatively fixed with flow hole position, for not cocurrent flow
Body media compatibility is poor, influences measurement accuracy.
Utility model content
The technical problems to be solved in the utility model is to overcome the defects of existing, there is provided a kind of lift even speed tube flow
Meter, compatibility is strong, high certainty of measurement.
In order to solve the above-mentioned technical problem, the utility model provides following technical solution：
A kind of lift mean velocity tube flowmeter, including connecting flange, be mutually fixedly connected with the lower part of the connecting flange
Detection bar, the detection bar have inner cavity, and the interior intracavitary is provided with stagnation pressure average pipe and static pressure fairlead, the detection bar
Side offers some flow holes in communication with the inner cavity, and the opposite side of the detection bar offers static pressure hole, the stagnation pressure
The lower end of average pipe offers the opening towards flow hole side, and the lower end of the static pressure fairlead is connected with the static pressure hole,
The top of the connecting flange is provided with positive pressure guiding pipe and negative pressure guiding pipe, the upper end of the positive pressure guiding pipe and the stagnation pressure average pipe
Connection, the negative pressure guiding pipe are connected with the static pressure fairlead；The stagnation pressure average pipe includes epimere pipe and hypomere pipe, it is described on
The upper end of section pipe is connected with the positive pressure guiding pipe, the lower end setting opening of the hypomere pipe, outside the hypomere of the epimere pipe
Side is set with the hypomere pipe, and electronic control cylinder, the connecting rod of the electronic control cylinder and institute are provided with the outside of the epimere of the epimere pipe
The connection of hypomere pipe is stated, the outside of the epimere pipe and hypomere pipe is set with telescopic sleeve jointly.
Further, the opening is arc-shaped.
Further, the connecting flange includes pressure flange and flange connections, the pressure flange and the flange
Connecting tube is fixedly connected by clamping screw, and the positive pressure guiding pipe, negative pressure guiding pipe and detection bar are fixed with the pressure flange
Connection, the flange connections are preset on pipe side wall.
A kind of lift mean velocity tube flowmeter of the utility model, between opening and flow hole that stagnation pressure average pipe can be adjusted
Relative position, compatibility is strong, high certainty of measurement.
Brief description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form the limitation to the utility model.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the schematic cross-sectional view of epimere pipe and hypomere pipe junction in the utility model.
Embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it will be appreciated that described herein excellent
Select embodiment to be only used for describing and explaining the present invention, be not used to limit the utility model.
As shown in Figure 1, 2, a kind of lift mean velocity tube flowmeter, including it is connecting flange, mutually solid with the lower part of connecting flange
Surely the detection bar 1 connected, detection bar 1 have inner cavity, and interior intracavitary is provided with stagnation pressure average pipe 2 and static pressure fairlead 3, detection bar 1
Side offer four flow holes connected with inner cavity 4, the opposite side of detection bar 1 offers static pressure hole 5, stagnation pressure average pipe 2
Lower end offer opening 6 towards 4 side of flow hole, the lower end of static pressure fairlead 3 is connected with static pressure hole 5, connecting flange
Top is provided with positive pressure guiding pipe 7 and negative pressure guiding pipe 8, and positive pressure guiding pipe 7 is connected with the upper end of stagnation pressure average pipe 2, bear pressure guiding pipe 8 with it is quiet
Pressure fairlead 3 connects；Stagnation pressure average pipe 2 includes epimere pipe 9 and hypomere pipe 10, and the upper end of epimere pipe 9 is connected with positive pressure guiding pipe 7,
The lower end of hypomere pipe 10 sets opening 6, and the hypomere outer sheath of epimere pipe 9 loads section pipe 10, is provided with the outside of the epimere of epimere pipe 9
Electronic control cylinder 11, the connecting rod 12 of electronic control cylinder 11 are connected with hypomere pipe 10, and the outside of epimere pipe 9 and hypomere pipe 10 is set with jointly
There is telescopic sleeve 13.By controlling electronic control cylinder operation to realize the adjustment of hypomere pipe position, so that the position of opening is adjusted, with suitable
The pipeline of different fluid media (medium)s or different bores is answered, telescopic sleeve plays the role of sealing waterproof.
It is open 6 arc-shaped, increases into flow, improve measurement efficiency.
Connecting flange includes pressure flange 14 and flange connections 15, and pressure flange 14 passes through locking with flange connections 15
Bolt is fixedly connected, and positive pressure guiding pipe 7, negative pressure guiding pipe 8 and detection bar 1 are fixedly connected with pressure flange 14, flange connections 15
It is preset on pipe side wall.Main body is sampled with pressure flanged joint, installs and dismantles easy to globality.
A kind of lift mean velocity tube flowmeter of the utility model, between opening and flow hole that stagnation pressure average pipe can be adjusted
Relative position, compatibility is strong, high certainty of measurement.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify the technical solution described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (3)
- A kind of 1. lift mean velocity tube flowmeter, it is characterised in that：Including connecting flange, it is mutually solid with the lower part of the connecting flange Surely the detection bar connected, the detection bar have inner cavity, and the interior intracavitary is provided with stagnation pressure average pipe and static pressure fairlead, described The side of detection bar offers some flow holes in communication with the inner cavity, and the opposite side of the detection bar offers static pressure hole, The lower end of the stagnation pressure average pipe offers the opening towards flow hole side, lower end and the static pressure of the static pressure fairlead Hole connects, and the top of the connecting flange is provided with positive pressure guiding pipe and negative pressure guiding pipe, the positive pressure guiding pipe and the stagnation pressure average The upper end connection of pipe, the negative pressure guiding pipe are connected with the static pressure fairlead；The stagnation pressure average pipe includes epimere pipe and hypomere pipe, and the upper end of the epimere pipe is connected with the positive pressure guiding pipe, described The lower end of hypomere pipe sets the opening, and the hypomere pipe, the epimere of the epimere pipe are set with the outside of the hypomere of the epimere pipe Outside is provided with electronic control cylinder, and the connecting rod of the electronic control cylinder is connected with the hypomere pipe, the epimere pipe and hypomere pipe Outside is set with telescopic sleeve jointly.
- A kind of 2. lift mean velocity tube flowmeter according to claim 1, it is characterised in that：The opening is arc-shaped.
- A kind of 3. lift mean velocity tube flowmeter according to claim 1, it is characterised in that：The connecting flange includes taking Pressure flange and flange connections, the pressure flange is fixedly connected with the flange connections by clamping screw, described just to draw Pressure pipe, negative pressure guiding pipe and detection bar are fixedly connected with the pressure flange, and the flange connections are preset on pipe side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164477.9U CN207335789U (en) | 2017-09-12 | 2017-09-12 | A kind of lift mean velocity tube flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164477.9U CN207335789U (en) | 2017-09-12 | 2017-09-12 | A kind of lift mean velocity tube flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207335789U true CN207335789U (en) | 2018-05-08 |
Family
ID=62368815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721164477.9U Active CN207335789U (en) | 2017-09-12 | 2017-09-12 | A kind of lift mean velocity tube flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207335789U (en) |
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2017
- 2017-09-12 CN CN201721164477.9U patent/CN207335789U/en active Active
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