CN207730268U - A kind of differential flow measuring device - Google Patents
A kind of differential flow measuring device Download PDFInfo
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- CN207730268U CN207730268U CN201820032077.0U CN201820032077U CN207730268U CN 207730268 U CN207730268 U CN 207730268U CN 201820032077 U CN201820032077 U CN 201820032077U CN 207730268 U CN207730268 U CN 207730268U
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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, three valve groups, adapter and differential pressure transmitter, positive pressure port and negative pressure port are provided on orifice plate, three valve groups are connect with orifice plate, and fluid passage is provided in three valve groups, and fluid passage includes positive pressure access and negative pressure passage, positive pressure access is connected to positive pressure port, and negative pressure passage is connected to negative pressure port；Adapter is connect with three valve groups, the negative pressure guide hole that the positive pressure guide hole being connected to positive pressure access is provided on adapter and is connected to negative pressure passage, and the outlet of positive pressure guide hole is external tapping, and the outlet for bearing pressure guide hole is sewage draining exit；Differential pressure transmitter is connect with adapter, and the positive pressure entrance of differential pressure transmitter is connected to positive pressure guide hole, and the negative pressure entrance of differential pressure transmitter is connected to negative pressure guide hole.Three valve groups and differential pressure transmitter are connected by adapter, structure is simplified, reduces leakage point, reduce failure rate, reduce occupied space, improve safety.
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.
Traditional differential flow measuring instrument is as shown in Figure 1, including differential pressure transmitter 11, three valve groups 12,13 and of triple valve
Pressuring throttling gear 14, wherein connect three valve groups 12 and pressuring throttling gear 14 by two triple valves 13, realization singly goes out double
The function of redundancy.The hole of the flange and sandwiched fixation that pressuring throttling gear 14 can be connect by two with engineering pipeline between the flanges
Board group is at there are two radial through-hole, respectively positive and negative pressure ports for setting on orifice plate.Complicated integral structure, weld seam is more, easily occurs
Leakage increases failure rate and security risk, and design, processing, exfactory inspection etc. are of high cost, and occupied space is big, are unfavorable for scene and apply
Work, can only be simple be used as flow measurement, the measurement of procedure parameter can not be carried out, i.e., can not be to ginsengs such as temperature, pressure, flows
Number carries out integrated measuring, can not be attached, have a single function with other measuring instrumentss.
Utility model content
The purpose of this utility model is to provide a kind of differential flow measuring devices, to solve knot existing in the prior art
Structure complexity, high failure rate, of high cost, occupied space are big, the technical issues of having a single function.
As above conceive, technical solution is used by the utility model：
A kind of differential flow measuring device, including：
Orifice plate is provided with positive pressure port and negative pressure port on the orifice plate；
Three valve groups are connect with the orifice plate, and fluid passage is provided in three valve group, and the fluid passage includes positive pressure
Access and negative pressure passage, the positive pressure access are connected to the positive pressure port, and the negative pressure passage is connected to the negative pressure port；
Adapter is connect with three valve group, and the positive pilot being connected to the positive pressure access is provided on the adapter
The outlet of hole and the negative pressure guide hole being connected to the negative pressure passage, the positive pressure guide hole is external tapping, and the negative pressure guide hole goes out
Mouth is sewage draining exit；
Differential pressure transmitter is connect with the adapter, and the positive pressure entrance of the differential pressure transmitter connects with the positive pressure guide hole
Logical, the negative pressure entrance of the differential pressure transmitter is connected to the negative pressure guide hole.
Wherein, the positive pressure access includes positive pressure input hole and positive pressure delivery outlet, and the negative pressure passage includes negative pressure input
Hole and negative pressure delivery outlet, the positive pressure input hole are connected to the positive pressure port, the negative pressure input hole and the negative pressure port
Connection.
Wherein, the entrance of the positive pressure guide hole is connected to the positive pressure delivery outlet, and the exit of the positive pressure guide hole is removable
Unload connection pressure sensor.
Wherein, the entrance of the negative pressure guide hole is connected to the negative pressure delivery outlet, the exit setting of the negative pressure guide hole
There is blowdown valve.
Wherein, it is provided with the positive pressure passageway being connected to the positive pressure guide hole in the adapter and connects with the negative pressure guide hole
Logical negative pressure channel, there are two output ends for the positive pressure passageway, are separately connected the positive pressure entrance of two differential pressure transmitters, institute
Stating negative pressure channel, there are two output ends, are separately connected the negative pressure entrance of two differential pressure transmitters.
Wherein, the positive pressure passageway and negative pressure channel parallel interval arrangement.
Wherein, the adapter is bolted with three valve group.
Wherein, three valve group is connect with the orifice plate by pressure pipe, one end of the pressure pipe and the orifice plate one
Body formed, the other end of the pressure pipe is bolted with three valve group.
Wherein, positive pressure pipeline and negative pressure line, entrance and the positive pressure of the positive pressure pipeline are provided in the pressure pipe
Hole is connected to, and the entrance of the negative pressure line is connected to negative pressure port, and the inlet of the positive pressure pipeline is provided with the first notch, institute
The inlet for stating negative pressure line is provided with the second notch, and the cross-sectional area of first notch is more than the transversal of the positive pressure pipeline
Area, the cross-sectional area of second notch are more than the cross-sectional area of the negative pressure line.
Wherein, three valve group is welded as a whole with the orifice plate.
The beneficial effects of the utility model：
The utility model proposes differential flow measuring device, pass through adapter and connect three valve groups and differential pressure transmitter, nothing
It needs to weld, has very strong practicability to special operation conditions such as the inactive welderings in scene, simplify structure, reduce leakage point, reduce
Failure rate reduces occupied space, improves safety；In addition, the first pressure guide hole on adapter can connect pressure sensor, the
Two pressure guide holes can connect blowdown valve, vdiverse in function, and positive pressure passageway and negative pressure channel can connect multiple differences for connecting differential pressure transmitter
Pressure transmitter, adapter can be mass, and save cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing differential flow measuring instrument；
Fig. 2 is the structural schematic diagram one for the differential flow measuring device that the utility model embodiment one provides；
Fig. 3 is the structural schematic diagram two for the differential flow measuring device that the utility model embodiment one provides；
Fig. 4 is the structural schematic diagram of three valve groups of the differential flow measuring device that the utility model embodiment one provides；
Fig. 5 is the lateral partial structurtes sectional view for the differential flow measuring device that the utility model embodiment one provides；
Fig. 6 is the structural schematic diagram one of the adapter for the differential flow measuring device that the utility model embodiment one provides；
Fig. 7 is the sectional view of Fig. 6；
Fig. 8 is the structural schematic diagram two of the adapter for the differential flow measuring device that the utility model embodiment one provides；
Fig. 9 is the structural schematic diagram for the differential flow measuring device that the utility model embodiment two provides；
Figure 10 is the lateral partial structurtes sectional view for the differential flow measuring device that the utility model embodiment two provides.
In figure：
11, differential pressure transmitter；12, three valve group；13, triple valve；14, pressuring throttling gear；
21, orifice plate；211, positive pressure port；212, pressure port is born；
22, three valve group；221, valve group ontology；222, flap；2211, positive pressure input hole；2212, positive pressure delivery outlet；2213、
Negative pressure input hole；2214, negative pressure delivery outlet；2215, third notch；2216, the 4th notch；
23, adapter；231, positive pressure guide hole；232, pressure guide hole is born；233, positive pressure passageway；234, negative pressure channel；235, outer
Interface；236, sewage draining exit；
24, differential pressure transmitter；
25, pressure pipe；251, positive pressure pipeline；252, negative pressure line；253, the first notch；254, the second notch.
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.
Referring to Fig. 2 to Fig. 8, the utility model embodiment provides a kind of differential flow measuring device, including orifice plate 21, three valves
Group 22, adapter 23 and differential pressure transmitter 24, are provided with positive pressure port 211 and negative pressure port 212 on orifice plate 21, three valve groups 22 with
Orifice plate 21 connects, and is provided with fluid passage in three valve groups 22, and fluid passage includes positive pressure access and negative pressure passage, positive pressure access with
Positive pressure port 211 is connected to, and negative pressure passage is connected to negative pressure port 212；Adapter 23 is connect with three valve groups 22, is set on adapter 23
The negative pressure guide hole 232 for being equipped with the positive pressure guide hole 231 being connected to positive pressure access and being connected to negative pressure passage, positive pressure guide hole 231 go out
Mouth is external tapping 235, and the outlet for bearing pressure guide hole 232 is sewage draining exit 236；Differential pressure transmitter 24 is connect with adapter 23, and differential pressure becomes
The positive pressure entrance of device 24 is sent to be connected to positive pressure guide hole 231, the negative pressure entrance of differential pressure transmitter 24 is connected to negative pressure guide hole 232.
Three valve groups 22 and differential pressure transmitter 24 are connected by adapter 23, it is special to the inactive weldering in scene etc. without welding
Operating mode has very strong practicability, simplifies structure, reduces leakage point, reduces failure rate, reduces occupied space, to scene
Requirements of installation space is low, improves safety.
Three valve groups 22 include valve group ontology 221 and flap 222, and fluid passage is set in valve group ontology 221, positive pressure access
Including positive pressure input hole 2211 and positive pressure delivery outlet 2212, negative pressure passage includes negative pressure input hole 2213 and negative pressure delivery outlet
2214, positive pressure input hole 2211 is connected to positive pressure port 211, and positive pressure delivery outlet 2212 is connected to positive pressure guide hole 231, negative pressure input
Hole 2213 is connected to negative pressure port 212, and negative pressure delivery outlet 2214 is connected to negative pressure guide hole 232.Flap 222 include positive pressure measuring valve,
Negative pressure measuring valve and regulating valve, are connected on three sides of valve group ontology 221 and are connected to fluid passage.Positive pressure measuring valve connects
Logical positive pressure input hole 2211 and positive pressure delivery outlet 2212 bear pressure measuring valve connection negative pressure input hole 2213 and negative pressure delivery outlet 2214,
Regulating valve is communicated with positive pressure measuring valve and negative pressure measuring valve.
The entrance of positive pressure guide hole 231 is connected to positive pressure delivery outlet 2212, and the exit of positive pressure guide hole 231 is detachably connected pressure
Force snesor can realize live temperature and pressure compensation.The entrance of negative pressure guide hole 232 is connected to negative pressure delivery outlet 2214, bears pressure guide hole
232 exit can connect blowdown valve or blow valve, can realize on-site maintenance, reduce maintenance cost.Sewage draining exit 236 is specifically used
When, when need to only rinse or blowdown adapter 23 and when differential pressure transmitter 24, positive pressure measuring valve can be closed, then open sewage draining exit
236, you can realize live blowdown.
It is provided with the positive pressure passageway 233 being connected to positive pressure guide hole 231 in adapter 23 and is connected to negative pressure guide hole 232 negative
Pressure passageway 234, the input terminal of positive pressure passageway 233 are connected to positive pressure guide hole 231, and there are two output ends for positive pressure passageway 233, connect respectively
Connect the positive pressure entrance of two differential pressure transmitters 24.The input terminal of negative pressure channel 234 is connected to negative pressure guide hole 232, negative pressure channel 234
There are two output ends, are separately connected the negative pressure entrance of two differential pressure transmitters 24.
In the present embodiment, positive pressure passageway 233 and the arrangement of 234 parallel interval of negative pressure channel.Two differential pressure transmitters 24 exist
The both sides of adapter 23 are symmetrical arranged.
In the present embodiment, adapter 23 is bolted with three valve groups 22.Without welding, to inactive weldering in scene etc.
Special operation condition has very strong practicability.
In the present embodiment, valve group ontology 221 is connect with orifice plate 21 by pressure pipe 25, one end of pressure pipe 25 and orifice plate
21 are integrally formed, and the other end and the valve group ontology 221 of pressure pipe 25 are bolted.
Positive pressure pipeline 251 and negative pressure line 252, the entrance of positive pressure pipeline 251 and positive pressure port are provided in pressure pipe 25
211 connections, the entrance of negative pressure line 252 are connected to negative pressure port 212, and the inlet of positive pressure pipeline 251 is provided with the first notch
253, the inlet of negative pressure line 252 is provided with the second notch 254, and the cross-sectional area of the first notch 253 is more than positive pressure pipeline 251
Cross-sectional area, the cross-sectional area of the second notch 254 is more than the cross-sectional area of negative pressure line 252.So that by pressure pipe 25 with
During orifice plate 21 welds, the magnitude of misalignment for having certain, i.e. positive pressure pipeline 251 is allowed to pass through the first notch 253 and positive pressure port
211 conductings, adapt to different measurement spacing, reduce positioning difficulty, time saving and energy saving, improve production efficiency.
Embodiment two
Fig. 9 and Figure 10 shows embodiment two, wherein identical as embodiment one or corresponding parts use and embodiment
One corresponding reference numeral.For simplicity, the distinctive points of embodiment two and embodiment one are only described.It is in place of difference, valve
Group ontology 221 be welded as a whole with orifice plate 21, reduce weld seam quantity, reduce the probability revealed, reduce produce and
Maintenance cost, more compact structure, occupied space are smaller.
The arrival end of positive pressure access is provided with third notch 2215, and the cross-sectional area of third notch 2215 is more than positive pressure access
Cross-sectional area, the arrival end of negative pressure passage is provided with the 4th notch 2216, and the cross-sectional area of the 4th notch 2216 is more than negative pressure
The cross-sectional area of access.So that during welding valve group ontology 221 and orifice plate 21, allow the magnitude of misalignment for having certain, i.e.,
Positive pressure access is connected by third notch 2215 and positive pressure port 211, adapts to different measurement spacing, and it is difficult to reduce positioning
Degree, it is time saving and energy saving, improve production efficiency.
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 positive pressure port (211) and negative pressure port (212) on the orifice plate (21)；
Three valve groups (22) are connect with the orifice plate (21), and fluid passage, the fluid passage are provided in three valve group (22)
Including positive pressure access and negative pressure passage, the positive pressure access is connected to the positive pressure port (211), the negative pressure passage with it is described
Negative pressure port (212) connection；
Adapter (23) is connect with three valve group (22), is provided on the adapter (23) and is connected to the positive pressure access
Positive pressure guide hole (231) and the negative pressure guide hole (232) that is connected to the negative pressure passage, the outlet of the positive pressure guide hole (231) is
The outlet of external tapping (235), the negative pressure guide hole (232) is sewage draining exit (236)；
Differential pressure transmitter (24) is connect with the adapter (23), the positive pressure entrance of the differential pressure transmitter (24) with it is described just
Pressure guide hole (231) is connected to, and the negative pressure entrance of the differential pressure transmitter (24) is connected to the negative pressure guide hole (232).
2. differential flow measuring device according to claim 1, which is characterized in that the positive pressure access includes positive pressure input
Hole (2211) and positive pressure delivery outlet (2212), the negative pressure passage include negative pressure input hole (2213) and negative pressure delivery outlet
(2214), the positive pressure input hole (2211) is connected to the positive pressure port (211), the negative pressure input hole (2213) with it is described
Negative pressure port (212) connection.
3. differential flow measuring device according to claim 2, which is characterized in that the entrance of the positive pressure guide hole (231)
It is connected to the positive pressure delivery outlet (2212), the exit of the positive pressure guide hole (231) is detachably connected pressure sensor.
4. differential flow measuring device according to claim 2, which is characterized in that the entrance of the negative pressure guide hole (232)
It is connected to the negative pressure delivery outlet (2214), the exit of the negative pressure guide hole (232) is provided with blowdown valve.
5. differential flow measuring device according to claim 1, which is characterized in that be provided in the adapter (23) with
The positive pressure passageway (233) of positive pressure guide hole (231) connection and the negative pressure channel (234) being connected to the negative pressure guide hole (232),
There are two output ends for the positive pressure passageway (233), are separately connected the positive pressure entrance of two differential pressure transmitters (24), described negative
There are two output ends for pressure passageway (234), are separately connected the negative pressure entrance of two differential pressure transmitters (24).
6. differential flow measuring device according to claim 5, which is characterized in that the positive pressure passageway (233) and described
Negative pressure channel (234) parallel interval is arranged.
7. differential flow measuring device according to claim 1, which is characterized in that the adapter (23) and three valve
Group (22) is bolted.
8. according to claim 1-7 any one of them differential flow measuring devices, which is characterized in that three valve group (22) with
The orifice plate (21) is connected by pressure pipe (25), and one end and the orifice plate (21) of the pressure pipe (25) are integrally formed, institute
The other end and three valve group (22) for stating pressure pipe (25) are bolted.
9. differential flow measuring device according to claim 8, which is characterized in that be provided with just in the pressure pipe (25)
The entrance of pressure pipe road (251) and negative pressure line (252), the positive pressure pipeline (251) is connected to positive pressure port (211), described negative
The entrance on pressure pipe road (252) is connected to negative pressure port (212), and the inlet of the positive pressure pipeline (251) is provided with the first notch
(253), the inlet of the negative pressure line (252) is provided with the second notch (254), the cross section of first notch (253)
Product is more than the cross-sectional area of the positive pressure pipeline (251), and the cross-sectional area of second notch (254) is more than the negative pressure line
(252) cross-sectional area.
10. according to claim 1-7 any one of them differential flow measuring devices, which is characterized in that three valve group (22)
It is welded as a whole with the orifice plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820032077.0U CN207730268U (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 |
|---|---|---|---|
| CN201820032077.0U CN207730268U (en) | 2018-01-09 | 2018-01-09 | A kind of differential flow measuring device |
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| CN207730268U true CN207730268U (en) | 2018-08-14 |
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| CN201820032077.0U Active CN207730268U (en) | 2018-01-09 | 2018-01-09 | A kind of differential flow measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007508A (en) * | 2018-01-09 | 2018-05-08 | 上海科洋科技股份有限公司 | A kind of differential flow measuring device |
| CN112414612A (en) * | 2020-11-04 | 2021-02-26 | 海默新宸水下技术(上海)有限公司 | Underwater differential pressure transmitter |
| CN113669625A (en) * | 2021-07-16 | 2021-11-19 | 湖南铱镝艾姆流体科技有限公司 | Pressure taking valve and pressure measuring system for throttling device |
-
2018
- 2018-01-09 CN CN201820032077.0U patent/CN207730268U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007508A (en) * | 2018-01-09 | 2018-05-08 | 上海科洋科技股份有限公司 | A kind of differential flow measuring device |
| CN112414612A (en) * | 2020-11-04 | 2021-02-26 | 海默新宸水下技术(上海)有限公司 | Underwater differential pressure transmitter |
| CN113669625A (en) * | 2021-07-16 | 2021-11-19 | 湖南铱镝艾姆流体科技有限公司 | Pressure taking valve and pressure measuring system for throttling device |
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