CN206862423U - A kind of cross flowmeter - Google Patents
A kind of cross flowmeter Download PDFInfo
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- CN206862423U CN206862423U CN201720333927.6U CN201720333927U CN206862423U CN 206862423 U CN206862423 U CN 206862423U CN 201720333927 U CN201720333927 U CN 201720333927U CN 206862423 U CN206862423 U CN 206862423U
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- cross
- flowmeter
- pressure port
- measurement body
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Abstract
The utility model discloses a kind of cross flowmeter, a kind of cross flowmeter, including, measure body, the both sides of the measurement body are provided with flange terminal pad, the flange terminal pad is fixed by nut and whorl brace rod, and the measurement body is provided with pressure port, and the middle inside of the measurement body is fixedly connected with throttling element；The cross flowmeter, measurement accuracy is high, and straight length requires low, and the pressure loss is low, reproducible, and stain resistance；The utility model is designed reasonably, suitable for production and popularization and application.
Description
Technical field
The utility model belongs to flow measurement technology field, and in particular to a kind of cross flowmeter.
Background technology
Differential pressure flowmeter is with a long history, is most widely used in all kinds of flow instruments.It is with Bernoulli's theorem and stream
Dynamic continuity equation is general principle, the difference of pressure caused by restricting element is crossed by measuring fluid stream in pipeline, with reference to
Working condition is known so as to try to achieve flow.Wherein orifice flowmeter starts a kind of standard differential pressure type throttling dress of application in the world
Put, its structure is shown in Fig. 3.
The measurement shortcoming of orifice flowmeter：
1. orifice plate ensures precision with endoporus acute angle line, therefore, long-term use of essence sensitive to corrosion, wear, fouling, booty
Exactness is difficult to ensure that.
2. there is longer flow development length requirement, it is difficult to meet, it is especially more prominent to larger caliber, problem.
3. the pressure loss is big.
4. the repeatability measured belongs to medium level in flow sensor.
Utility model content
The purpose of this utility model is to provide a kind of cross flowmeter, asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the utility model provides following technical scheme：A kind of cross flowmeter, including, measurement
Body, the both sides of the measurement body are provided with flange terminal pad, and the flange terminal pad is fixed by nut and whorl brace rod,
The measurement body is provided with pressure port, and the middle inside of the measurement body is fixedly connected with throttling element.
Preferably, the pressure port is provided with two, respectively positive pressure port and negative pressure port, and throttling element is located at positive pressure
Between hole and negative pressure port.
Preferably, the pressure port is welded with pressure short tube, a valve, three valve groups etc..
Preferably, the inside of the throttling element is provided with venturi orifices.
Preferably, pad is provided between the nut and flange terminal pad.
Technique effect of the present utility model and advantage：The cross flowmeter, measurement accuracy is high, loose structure energy stream field
It is balanced, reduces vortex, vibration and signal noise, the stability in flow field and greatly improve, so as to which measurement accuracy is higher；Straight tube
Duan Yaoqiu is low, can balance flow field, and adjustment is stable, and pressure recovery ratio conventional throttle device is fast, substantially reduces to straight length
Requirement；The pressure loss is low, symmetrical balance design, reduces the formation and turbulent skin friction of vortex, reduces dynamic loss of energy,
Under same operating mode, compared with throttle orifice plate apparatus, the pressure loss is low；Reproducible, multiple openings disperse stress, no acute angle
Abrasion, can greatly improve repeatability flow field balance and stability；Stain resistance, multiple openings disperse and sensor edge,
Dirty medium can be made to be easy to stream to pass through, so than orifice flowmeter more resistant to dirty；The utility model is designed reasonably, suitable for production
And popularization and application.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is side view of the present utility model；
Fig. 3 is standard differential pressure type throttling arrangement structural representation.
In figure：1 measurement body, 2 flange terminal pads, 3 nuts, 4 whorl brace rods, 5 pressure ports, 6 throttling elements.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model provides a kind of cross flowmeter as Figure 1-3, including measurement body 1, the measurement
The both sides of body 1 are provided with flange terminal pad 2, and the flange terminal pad 2 is fixed by nut 3 and whorl brace rod 4, the measurement
Body 1 is provided with pressure port 5, and the middle inside of the measurement body 1 is fixedly connected with throttling element 6.
Further, the pressure port 5 is provided with two, respectively positive pressure port and negative pressure port, and throttling element 6 is positioned at just
Between pressure port and negative pressure port, malleation signal and negative pressure signal of the collection fluid in measurement body 1.
Further, the pressure port 5 is welded with pressure short tube, a valve, three valve groups etc., for positive and negative what is collected
Pressure signal guides to differential pressure transmitter respectively.
Further, the inside of the throttling element 6 is provided with venturi orifices, slows down flow velocity, increases measurement precision.
Further, pad is provided between the nut 3 and flange terminal pad 2, increases frictional force.
Operation principle：Measurement body 1 rear and front end is provided with flange terminal pad 2, for being measured pipeline connection；Measurement pipe
Body 1 is provided with positive a pressure tappings and a negative pressure tappings, and pressure port 5 is positioned at the upstream and downstream of measurement body 1, for gathering
Malleation signal and negative pressure signal of the fluid in measurement body 1, using ring type pressure；Throttling element 6 is clamped among measurement body 1
Position, fluid media (medium) produce pressure differential by the upstream and downstream of throttling element 6；Pressure port 5 is welded with pressure short tube, valve, three
Valve group etc., for the positive/negative-pressure signal collected to be guided to differential pressure transmitter respectively.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, 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 to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Progress equivalent substitution, all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc.,
It should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of cross flowmeter, including measurement body (1), it is characterised in that：The both sides of the measurement body (1) are provided with method
Blue terminal pad (2), the flange terminal pad (2) is fixed by nut (3) and whorl brace rod (4), on the measurement body (1)
Provided with pressure port (5), the middle inside of the measurement body (1) is fixedly connected with throttling element (6).
A kind of 2. cross flowmeter according to claim 1, it is characterised in that：The pressure port (5) is provided with two, point
Not Wei positive pressure port and negative pressure port, and throttling element (6) is between positive pressure port and negative pressure port.
A kind of 3. cross flowmeter according to claim 1, it is characterised in that：The pressure port (5) is welded with pressure
Short tube, a valve, three valve groups.
A kind of 4. cross flowmeter according to claim 1, it is characterised in that：The inside of the throttling element (6) is provided with
Venturi orifices.
A kind of 5. cross flowmeter according to claim 1, it is characterised in that：The nut (3) and flange terminal pad
(2) pad is provided between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333927.6U CN206862423U (en) | 2017-03-31 | 2017-03-31 | A kind of cross flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333927.6U CN206862423U (en) | 2017-03-31 | 2017-03-31 | A kind of cross flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206862423U true CN206862423U (en) | 2018-01-09 |
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ID=60816959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720333927.6U Active CN206862423U (en) | 2017-03-31 | 2017-03-31 | A kind of cross flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206862423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802168A (en) * | 2017-03-31 | 2017-06-06 | 上海科洋科技股份有限公司 | A kind of cross flowmeter |
-
2017
- 2017-03-31 CN CN201720333927.6U patent/CN206862423U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802168A (en) * | 2017-03-31 | 2017-06-06 | 上海科洋科技股份有限公司 | A kind of cross flowmeter |
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