CN207730267U - A kind of differential flow measuring device - Google Patents
A kind of differential flow measuring device Download PDFInfo
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- CN207730267U CN207730267U CN201820032076.6U CN201820032076U CN207730267U CN 207730267 U CN207730267 U CN 207730267U CN 201820032076 U CN201820032076 U CN 201820032076U CN 207730267 U CN207730267 U CN 207730267U
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- fluid inlet
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Abstract
The utility model discloses a kind of differential flow measuring device, it belongs to flow measurement technology field, including orifice plate and three valve groups, pressure port is provided on orifice plate, three valve groups include valve group ontology and flap, it is provided with fluid passage in valve group ontology, fluid passage includes fluid inlet holes and flow outlet aperture, the arrival end of fluid inlet holes is provided with notch, the cross-sectional area of notch is more than the cross-sectional area of fluid inlet holes, valve group ontology is welded as a whole with orifice plate, fluid inlet holes are connected with pressure port, reduce weld seam quantity, reduce the probability revealed, reduce production and maintenance cost, more compact structure, occupied space is smaller；The setting of notch so that during being aligned the fluid inlet holes of valve group ontology with the pressure port on orifice plate, allows the magnitude of misalignment for having certain, i.e. fluid inlet holes to be connected with pressure port by notch, reduce positioning difficulty, it is time saving and energy saving, improve production efficiency.
Description
Technical field
The utility model is related to flow measurement technology field more particularly to a kind of differential flow measuring devices.
Background technology
In recent years, resource-effective and energy conservation and environmental protection is highly valued, so industrial flow measurement reforms into industry
Necessary implementation link in production process.Flowmeter is answered in the engineering fields such as oil, chemical industry, metallurgy, electric power extensively
With.
As shown in Figure 1, flowmeter is mainly made of pressuring throttling gear, pressure pipe 11 and three valve groups 12.Wherein, pressure section
The orifice plate 13 of the flange and sandwiched fixation that stream device can be connect by two with engineering pipeline between the flanges forms, and is set on orifice plate 13
Radial through-hole there are two setting, respectively positive and negative pressure port；Three valve groups 12 are by positive and negative pressure measuring valve, a regulating valve and are set to
Being made of the fluid passage that exterior line is constituted between each valve.When using installation, pressuring throttling gear passes through its flange welding
Between pipeline butt end, connected respectively by pressure pipe 11 between positive and negative pressure port and the fluid inlet holes of positive and negative pressure measuring valve thereon
Logical, pressure pipe 11 is welded with orifice plate 13, and three valve groups 12 are welded with pressure pipe 11.Weld seam is more after assembling, and sealing is poor, is also easy to produce
Leakage increases production and maintenance cost；Be related to many places welding and three valve groups, 12 connector assembling, spatially require compared with
It is high.In addition, in the welding process, needing pressure pipe 11 being aligned welding with the pressure port on orifice plate 13, by the stream of three valve groups 12
Body entrance is aligned welding with pressure pipe 11, and position fixing process is complicated, and labor intensity is big, and easy tos produce dislocation, and positioning accuracy is low, leads
It causes welding quality to decline, is also easy to produce leakage.
Utility model content
The purpose of this utility model is to provide a kind of differential flow measuring devices, to solve stream existing in the prior art
The technical problem that gauge is complicated, easy leakage, occupied space are big.
As above conceive, technical solution is used by the utility model：
A kind of differential flow measuring device, including：
Orifice plate is provided with pressure port on the orifice plate；
Three valve groups, including valve group ontology and flap are provided with fluid passage, the fluid passage packet in the valve group ontology
Fluid inlet holes and flow outlet aperture are included, the arrival end of the fluid inlet holes is provided with notch, the cross-sectional area of the notch
More than the cross-sectional area of the fluid inlet holes, the valve group ontology is welded as a whole with the orifice plate, the fluid inlet holes
It is connected with the pressure port.
Wherein, the axis of the fluid inlet holes and the axis of the pressure port are arranged in angle.
Wherein, the axis of the fluid inlet holes and the axis of the pressure port are arranged in parallel.
Wherein, the arrival end of the fluid inlet holes is located at the center of the notch.
Wherein, the arrival end of the fluid inlet holes deviates the center of the notch.
Wherein, the pressure port includes positive pressure port and negative pressure port, the fluid inlet holes include positive pressure input hole and
Negative pressure input hole, the positive pressure input hole are connected to the positive pressure port, and the negative pressure input hole is connected to the negative pressure port.
Wherein, the positive pressure input hole and the negative pressure input hole are respectively positioned on the bottom surface of the valve group ontology.
Wherein, U-lag is offered on the bottom surface of the valve group ontology, the U-lag divides the lower end of the valve group ontology
Two footing are divided into, the positive pressure input hole and the negative pressure input hole are located on the bottom surface of two footing.
Wherein, the flow outlet aperture includes positive pressure delivery outlet and negative pressure delivery outlet, the positive pressure delivery outlet and described negative
Pressure delivery outlet is respectively positioned on the top surface of the valve group ontology.
Wherein, the flap includes positive pressure measuring valve, negative pressure measuring valve and regulating valve, is connected to the three of the valve group ontology
It is connected on a side and with the fluid passage.
The beneficial effects of the utility model：
The utility model proposes differential flow measuring device reduced by the way that valve group ontology is welded as a whole with orifice plate
Weld seam quantity, reduces the probability revealed, and reduces production and maintenance cost, more compact structure, and occupied space is smaller；
Notch is set by the arrival end in fluid inlet holes, and makes the cross-sectional area of notch more than the cross-sectional area of fluid inlet holes,
So that during being aligned the fluid inlet holes of valve group ontology with the pressure port on orifice plate, allow the magnitude of misalignment for having certain,
I.e. fluid inlet holes are connected by notch with pressure port, adapt to different measurement spacing, reduce positioning difficulty, time saving province
Power improves production efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing differential flow measuring device；
Fig. 2 is the structural schematic diagram for the differential flow measuring device that the utility model embodiment one provides；
Fig. 3 is the vertical view for the differential flow measuring device that the utility model embodiment one provides；
Fig. 4 be Fig. 3 A-A to sectional view；
Fig. 5 is the side view for the differential flow measuring device that the utility model embodiment one provides；
Fig. 6 is the sectional view of the B-B direction of Fig. 5；
Fig. 7 is the sectional view for the differential flow measuring device that the utility model embodiment two provides.
In figure：
11, pressure pipe；12, three valve group；13, orifice plate；
21, orifice plate；211, pressure port；
22, valve group ontology；221, fluid inlet holes；222, flow outlet aperture；223, notch；224, U-lag；
23, flap；231, positive pressure measuring valve；232, pressure measuring valve is born；233, regulating valve.
Specific implementation mode
The technical issues of to make the utility model solve, the technical solution of use and the technique effect that reaches are clearer,
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It is understood that
Specific embodiment described herein is used only for explaining the utility model, rather than the restriction to the utility model.In addition it also needs
It is noted that illustrate only for ease of description, in attached drawing with the relevant part of the utility model and it is not all.
Embodiment one
Referring to Fig. 2 to Fig. 6, the utility model embodiment provides a kind of differential flow measuring device, including orifice plate 21 and three
Valve group is provided with pressure port 211 on orifice plate 21, and three valve groups include valve group ontology 22 and flap 23, are provided in valve group ontology 22
Fluid passage, fluid passage include fluid inlet holes 221 and flow outlet aperture 222, and valve group ontology 22 is welded as one with orifice plate 21
Body, fluid inlet holes 221 are connected with pressure port 211, reduce weld seam quantity, reduce the probability revealed, reduce life
Production and maintenance cost, more compact structure, occupied space are smaller.The arrival end of fluid inlet holes 221 is provided with notch 223, notch
223 cross-sectional area be more than fluid inlet holes 221 cross-sectional area so that by the fluid inlet holes 221 of valve group ontology 22 with
During pressure port 211 on orifice plate 21 is aligned, the magnitude of misalignment for having certain, i.e. fluid inlet holes 221 is allowed to pass through notch 223
It is connected with pressure port 211, adapts to different measurement spacing, reduce positioning difficulty, it is time saving and energy saving, improve production efficiency.
Pressure port 211 includes positive pressure port and negative pressure port, the axially spaced-apart of positive pressure port and negative pressure port along orifice plate 21
Arrangement.Fluid inlet holes 221 include positive pressure input hole and negative pressure input hole, and flow outlet aperture 222 includes positive pressure delivery outlet and bears
Delivery outlet, positive pressure input hole is pressed to be connected to positive pressure port, negative pressure input hole is connected to negative pressure port.
Positive pressure input hole and negative pressure input hole are respectively positioned on the bottom surface of valve group ontology 22, positive pressure delivery outlet and negative pressure delivery outlet
It is respectively positioned on the top surface of valve group ontology 22.Offer U-lag 224 on the bottom surface of valve group ontology 22, U-lag 224 is by valve group ontology
22 lower end is divided into two footing, and positive pressure input hole and negative pressure input hole are located on the bottom surface of two footing.U-lag
224 setting reduces the weight of valve group ontology 22, reduces the working (finishing) area for the plane for opening up notch 223, and sky is provided for welding
Between.
Flap 23 includes positive pressure measuring valve 231, negative pressure measuring valve 232 and regulating valve 233, is connected to the three of valve group ontology 22
It is connected on a side and with fluid passage.Positive pressure measuring valve 231 is connected to positive pressure input hole and positive pressure delivery outlet, bears pressure measuring valve 232 and connects
Logical negative pressure input hole and negative pressure delivery outlet, regulating valve 233 are communicated with positive pressure measuring valve 231 and negative pressure measuring valve 232.
The axis of fluid inlet holes 221 can be parallel with the axis of pressure port 211, can also be in that angle is arranged, herein not
It is restricted, as long as not influencing the conducting of fluid inlet holes 221 and pressure port 211.
In the present embodiment, the axis of fluid inlet holes 221 and the axis of pressure port 211 are arranged in angle, can ensure
Spacing is measured, the axial distance of spacing, that is, between positive pressure port and negative pressure port is measured, when measuring one timing of spacing, fluid input
Hole 221 is obliquely installed, and enables to positive pressure measuring valve 231 and negative pressure measuring valve 232 more compact, saves the sky that valve group ontology 22 occupies
Between.
Notch 223 can be rectangular channel, or circular trough is not restricted shape at this.The setting of notch 223,
So that when welding valve group ontology 22 with orifice plate 21, even if having between fluid inlet holes 221 and corresponding pressure port 211 certain
Magnitude of misalignment, nor affects on the conducting of fluid inlet holes 221 and pressure port 211, and adapts to different measurement spacing, expands suitable
Answer range.
In the present embodiment, notch 223 is circular trough, and the arrival end of fluid inlet holes 221 is located at the center of notch 223
Place.A diameter of 5-10mm of fluid inlet holes 221, the diameter of notch 223 are more than the diameter 2-6mm of fluid inlet holes 221.
Embodiment two
Fig. 7 shows embodiment two, wherein identical as embodiment one or corresponding parts are used with embodiment one accordingly
Reference numeral.For simplicity, the distinctive points of embodiment two and embodiment one are only described.Difference place is that fluid inputs
The axis in hole 221 is parallel with the axis of pressure port 211, and notch 223 is rectangular channel, and the arrival end of fluid inlet holes 221 deviates slot
The center of mouth 223.The axis of fluid inlet holes 221 is parallel with the axis of pressure port 211, production easy to process, reduces pressure drop, profit
It is flowed in fluid.
A diameter of 5-10mm of fluid inlet holes 221, the length of notch 223 are more than the diameter 2- of fluid inlet holes 221
6mm, the width of notch 223 is not less than the diameter of fluid inlet holes 221, is not restricted to size at this, in the item that space allows
Under part, it can be arranged according to actual conditions.Notch 223 is bigger, and the range for the measurement spacing being suitable for is bigger.
Embodiment of above is to elaborate the basic principle and characteristic of the utility model, and the utility model is not by above-mentioned reality
The mode of applying limits, and on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes,
These changes and modifications are both fallen in claimed the scope of the utility model.The utility model requires protection scope is by appended
Claims and its equivalent thereof.
Claims (10)
1. a kind of differential flow measuring device, which is characterized in that including：
Orifice plate (21) is provided with pressure port (211) on the orifice plate (21)；
Three valve groups, including valve group ontology (22) and flap (23), the valve group ontology (22) is interior to be provided with fluid passage, the stream
Body access includes fluid inlet holes (221) and flow outlet aperture (222), and the arrival end of the fluid inlet holes (221) is provided with
Notch (223), the cross-sectional area of the notch (223) are more than the cross-sectional area of the fluid inlet holes (221), the valve group sheet
Body (22) is welded as a whole with the orifice plate (21), and the fluid inlet holes (221) are connected with the pressure port (211).
2. differential flow measuring device according to claim 1, which is characterized in that the axis of the fluid inlet holes (221)
The axis of line and the pressure port (211) is arranged in angle.
3. differential flow measuring device according to claim 1, which is characterized in that the axis of the fluid inlet holes (221)
Line and the axis of the pressure port (211) are arranged in parallel.
4. differential flow measuring device according to claim 1, which is characterized in that fluid inlet holes (221) enter
Mouth end is located at the center of the notch (223).
5. differential flow measuring device according to claim 1, which is characterized in that fluid inlet holes (221) enter
Deviate the center of the notch (223) in mouth end.
6. according to claim 1-5 any one of them differential flow measuring devices, which is characterized in that the pressure port (211)
Including positive pressure port and negative pressure port, the fluid inlet holes (221) include positive pressure input hole and negative pressure input hole, the positive pressure
Input hole is connected to the positive pressure port, and the negative pressure input hole is connected to the negative pressure port.
7. differential flow measuring device according to claim 6, which is characterized in that the positive pressure input hole and the negative pressure
Input hole is respectively positioned on the bottom surface of the valve group ontology (22).
8. differential flow measuring device according to claim 7, which is characterized in that on the bottom surface of the valve group ontology (22)
Offer U-lag (224), the lower end of the valve group ontology (22) is divided into two footing by the U-lag (224), it is described just
Pressure input hole and the negative pressure input hole are located on the bottom surface of two footing.
9. according to claim 1-5 any one of them differential flow measuring devices, which is characterized in that the flow outlet aperture
(222) include positive pressure delivery outlet and negative pressure delivery outlet, the positive pressure delivery outlet and the negative pressure delivery outlet are respectively positioned on the valve group
On the top surface of ontology (22).
10. according to claim 1-5 any one of them differential flow measuring devices, which is characterized in that flap (23) packet
Positive pressure measuring valve (231), negative pressure measuring valve (232) and regulating valve (233) are included, three sides of the valve group ontology (22) are connected to
It is connected on face and with the fluid passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820032076.6U CN207730267U (en) | 2018-01-09 | 2018-01-09 | A kind of differential flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820032076.6U CN207730267U (en) | 2018-01-09 | 2018-01-09 | A kind of differential flow measuring device |
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| Publication Number | Publication Date |
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| CN207730267U true CN207730267U (en) | 2018-08-14 |
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ID=63085311
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820032076.6U Active CN207730267U (en) | 2018-01-09 | 2018-01-09 | A kind of differential flow measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088508A (en) * | 2018-01-09 | 2018-05-29 | 上海科洋科技股份有限公司 | A kind of differential flow measuring device |
-
2018
- 2018-01-09 CN CN201820032076.6U patent/CN207730267U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088508A (en) * | 2018-01-09 | 2018-05-29 | 上海科洋科技股份有限公司 | A kind of differential flow measuring device |
| CN108088508B (en) * | 2018-01-09 | 2024-08-02 | 上海科洋科技股份有限公司 | Differential pressure flow measuring device |
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