CN109489893A - Miniflow pressure gauge - Google Patents
Miniflow pressure gauge Download PDFInfo
- Publication number
- CN109489893A CN109489893A CN201710818107.0A CN201710818107A CN109489893A CN 109489893 A CN109489893 A CN 109489893A CN 201710818107 A CN201710818107 A CN 201710818107A CN 109489893 A CN109489893 A CN 109489893A
- Authority
- CN
- China
- Prior art keywords
- pressure gauge
- miniflow
- shell
- silicon core
- end cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
- G01L19/0084—Electrical connection means to the outside of the housing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of miniflow pressure gauges, it includes a pressure inlet, diffusion a silicon core, a conversion equipment, the diffusion silicon core is set in the pressure inlet, the conversion equipment includes converter, RS485 interface, the input terminal of the converter is electrically connected to the diffusion silicon core, and the output end of the converter is electrically connected to the RS485 interface.Miniflow pressure gauge of the invention has high sensitivity, high-precision, high stability using diffusion silicon core, and can guarantee to measure for a long time.Meanwhile it can keep transmitting over long distances and undistorted using the output of RS485 digital signal, and there is very strong anti-interference ability.
Description
Technical field
The present invention relates to a kind of miniflow pressure gauges.
Background technique
Pressure gauge be it is a kind of measure Fluid pressure sensor, be widely used in building, highway, railway, water power greatly,
The field of civil engineering such as dam, tunnel.Currently, existing pressure gauge signal in long range transmission is easy by extraneous interference,
And stability and precision are poor；Meanwhile measurement data is easy to cause in long-time service or when measurement miniflow fluid
Distortion.
Summary of the invention
The technical problem to be solved by the present invention is in the prior art vulnerable to extraneous interference in order to overcome, stability and
The defects of precision is poor, and measurement data is easily distorted provides a kind of miniflow pressure gauge.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of miniflow pressure gauge, it is characterized in that comprising there are a pressure inlet, diffusion a silicon core, a conversion equipment, institute
It states diffusion silicon core to be set in the pressure inlet, the conversion equipment includes converter, RS485 interface, the converter
Input terminal be electrically connected to the diffusion silicon core, the output end of the converter is electrically connected to the RS485 interface.
Preferably, the miniflow pressure gauge includes a shell, a conducting wire, the conversion equipment is set to the shell
Interior, the both ends of the pressure inlet are respectively equipped with a measurement portion, an output section, and one end of the shell is connected to the output section,
The conducting wire passes through the other end of the shell and is electrically connected to the RS485 interface, and the conducting wire is liquid level air guide line.
In the present solution, use conducting wire for liquid level air guide line, influence of the change of atmospheric pressure to measurement data can be eliminated,
Guarantee that product measurement data is more acurrate.Meanwhile measurement is intuitive, quick, and it can be completely unattended, detection.
Preferably, being equipped with the first sealing ring between the shell and the pressure inlet.
In the present solution, form, sealed reliable have very strong waterproof ability using the above structure.
Preferably, the miniflow pressure gauge includes a crimping Glan, one first washer, a gasket, a second packing ring,
The conducting wire sequentially passes through the crimping Glan, first washer, the gasket, the second packing ring, the crimping lattice
Orchid is embedded at the inner wall of the shell, and first washer, the gasket, the second packing ring are respectively positioned on the shell
It is interior, and first washer, the gasket, the second packing ring are pressed and are set between the crimping Glan and the shell.
In the present solution, form using the above structure greatly prolongs miniflow pressure so that forming sealing between shell and the external world
Power meter service life.
Preferably, the miniflow pressure gauge includes a sheath, the conducting wire passes through the sheath, and the sheath is arranged
In the shell.
In the present solution, form using the above structure, further strengthens and is sealed to shell, while playing protection conducting wire
Effect.
Preferably, the miniflow pressure gauge includes an end cap, one end of the end cap is connected to the measurement portion, described
The other end of end cap is equipped with several through-holes.
In the present solution, form, liquid can enter measurement portion by through-hole and by diffusion silicon using the above structure
Core measures, and structure is simple, and processing reduces cost.
Preferably, being equipped with a filter in the end cap, the filter is resisted against the aperture of the through-hole.
In the present solution, form using the above structure is protected so that the fluid by through-hole is all filtered by filter
It is more acurrate to demonstrate,prove measurement data.
Preferably, being also fixed with a retaining ring in the end cap, the retaining ring is connected to the inner wall of the end cap, and institute
Filter is stated to be set between the retaining ring and the through-hole.
In the present solution, form using the above structure, is set to filter pressure in end cap without generating by retaining ring
Shake inconsistent phenomenon.
Preferably, the outer surface of the diffusion silicon core is equipped with one second sealing ring, the second sealing ring pressure is set to institute
It states between diffusion silicon core and the pressure inlet.
In the present solution, form, effective sealing for reinforcing measurement portion prevent fluid from entering shell using the above structure
It is interior.
Preferably, the conversion equipment is fixedly connected on the pressure inlet by screw.
In the present solution, form using the above structure, effectively avoids conversion equipment from generating shaking phenomenon, protection converting means is played
The effect set.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Example.
The positive effect of the present invention is that:
Miniflow pressure gauge of the invention has high sensitivity, high-precision, high stability using diffusion silicon core, and can
Guarantee long-term measurement.Meanwhile it can keep transmitting over long distances and undistorted using the output of RS485 digital signal, and have very strong anti-
Interference performance.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the miniflow pressure gauge of present pre-ferred embodiments.
Description of symbols:
Conversion equipment 1, screw 11
Spread silicon core 2, the second sealing ring 21
Pressure inlet 3, output section 31, measurement portion 32
Shell 4, the first sealing ring 41
Crimping Glan 42, the first washer 43, gasket 44, second packing ring 45
Conducting wire 5
Sheath 6
End cap 7, through-hole 71, filter 72, retaining ring 73
Specific embodiment
Illustrate below by the mode of embodiment and completely the present invention in conjunction with attached drawing to become apparent from, but therefore not incite somebody to action this
Invention is limited among the embodiment described range.
As shown in Figure 1, miniflow pressure gauge of the invention includes conversion equipment 1, diffusion silicon core 2, pressure inlet 3, diffusion
Silicon core 2 is set in pressure inlet 3, and diffusion silicon core 2 has the characteristics that high sensitivity, high-precision, high stability, can be very square
Just processing is amplified, and can guarantee to measure for a long time.
Conversion equipment 1 includes converter (not shown), RS485 interface, and the input terminal of converter is electrically connected to expansion
Silicon core 2 is dissipated, the output end of converter is electrically connected to RS485 interface.The pressure conversion that converter is used to measure is at number
Signal is converted into RS485 digital signal, issued RS485 digital signal by RS485 interface, can keep transmitting over long distances
And it is undistorted, and there is very strong anti-interference ability.Preferably, conversion equipment 1 can be fixedly connected on pressure inlet by screw 11
3。
Miniflow pressure gauge may include having shell 4, conducting wire 5, and conversion equipment 1 is set in shell 4.The both ends of pressure inlet 3
It is respectively equipped with an output section 31, a measurement portion 32, one end of shell 4 is connected to output section 31, and conducting wire 5 passes through the another of shell 4
RS485 interface is held and is electrically connected to, conducting wire 5 is liquid level air guide line.It uses conducting wire 5 for liquid level air guide line, atmosphere can be eliminated
Influence of the buckling to measurement data guarantees that product measurement data is more acurrate.Meanwhile measurement is intuitive, quick, can completely nobody
It is on duty, detection.Preferably, the first sealing ring 41 is equipped between shell 4 and pressure inlet 3, sealed reliable has very strong anti-water energy
Power.
In order to reinforce the sealing effect of miniflow pressure gauge, miniflow pressure gauge may include live conductor Glan 42, the first washer
43, gasket 44, second packing ring 45, conducting wire 5 sequentially pass through crimping Glan 42, the first washer 43, gasket 44, second packing ring
45, crimping Glan 42 is embedded at the inner wall of shell 4, and the first washer 43, gasket 44, second packing ring 45 are respectively positioned in shell 4,
And first washer 43, gasket 44, second packing ring 45 are pressed and are set between crimping Glan 42 and shell 4 so that gasket 44 by
To extrusion deformation, to form sealing between shell 4 and the external world, miniflow pressure gauge service life is greatly prolonged.
Miniflow pressure gauge can also include a sheath 6, and conducting wire 5 passes through sheath 6, and sheath 6 is sheathed on shell 4, into one
Step is reinforced being sealed shell 4, while playing the role of protecting conducting wire 5.
The outer surface for spreading silicon core 2 can be equipped with the second sealing ring 21, and the second sealing ring 21 pressure is set to diffusion silicon core 2
Between pressure inlet 3.The sealing for effectively reinforcing measurement portion 32, prevents fluid from entering in shell 4.Preferably, the first sealing ring
41 and second sealing ring 21 can be O-ring, insulation performance is good, sealed reliable.
Miniflow pressure gauge may include having an end cap 7, and one end of end cap 7 is connected to measurement portion 32, and the other end of end cap 7 is set
There are several through-holes 71.Liquid can enter measurement portion 32 by through-hole 71 and be measured by spreading silicon core 2, structure
Simply, processing reduces cost.
Filter 72 can be equipped in end cap 7, filter 72 is resisted against the aperture of through-hole 71, so that passing through the stream of through-hole 71
Body all passes through filter 72 and is filtered, and guarantees that measurement data is more acurrate.
Retaining ring 73 can also be fixed in end cap 7, retaining ring 73 is connected to the inner wall of end cap 7, and filter 72 is arranged
Between retaining ring 73 and through-hole 71.By retaining ring 73 pressure of filter 72 is set in end cap 7 existing without generating shaking dislocation
As.
Miniflow pressure gauge configuration of the invention is simple, and processing reduces cost.Crimping Glan 42, shell 4, pressure inlet 3, end cap
It can be connected through a screw thread between 7, while improve processing efficiency, be easy to produce in enormous quantities.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of miniflow pressure gauge, which is characterized in that its include a pressure inlet, one diffusion silicon core, a conversion equipment, it is described
Diffusion silicon core is set in the pressure inlet, and the conversion equipment includes converter, RS485 interface, the converter
Input terminal is electrically connected to the diffusion silicon core, and the output end of the converter is electrically connected to the RS485 interface.
2. miniflow pressure gauge as described in claim 1, which is characterized in that the miniflow pressure gauge includes a shell, one leads
Line, the conversion equipment are set in the shell, and the both ends of the pressure inlet are respectively equipped with a measurement portion, an output section, institute
The one end for stating shell is connected to the output section, and the conducting wire passes through the other end of the shell and is electrically connected to the RS485
Interface, the conducting wire are liquid level air guide line.
3. miniflow pressure gauge as claimed in claim 2, which is characterized in that be equipped with first between the shell and the pressure inlet
Sealing ring.
4. miniflow pressure gauge as claimed in claim 2, which is characterized in that the miniflow pressure gauge include a crimping Glan,
One first washer, a gasket, a second packing ring, the conducting wire sequentially pass through the crimping Glan, first washer, described
Gasket, the second packing ring, the crimping Glan are embedded at the inner wall of the shell, first washer, the sealing
Pad, the second packing ring are respectively positioned in the shell, and first washer, the gasket, the second packing ring are pressed and set
Between the crimping Glan and the shell.
5. miniflow pressure gauge as claimed in claim 2, which is characterized in that the miniflow pressure gauge includes a sheath, described
Conducting wire passes through the sheath, and the sheath is sheathed on the shell.
6. miniflow pressure gauge as claimed in claim 2, which is characterized in that the miniflow pressure gauge includes an end cap, described
One end of end cap is connected to the measurement portion, and the other end of the end cap is equipped with several through-holes.
7. miniflow pressure gauge as claimed in claim 6, which is characterized in that be equipped with a filter, the filtering in the end cap
Piece is resisted against the aperture of the through-hole.
8. miniflow pressure gauge as claimed in claim 7, which is characterized in that a retaining ring is also fixed in the end cap, it is described
Retaining ring is connected to the inner wall of the end cap, and the filter is set between the retaining ring and the through-hole.
9. miniflow pressure gauge as described in claim 1, which is characterized in that the outer surface of the diffusion silicon core is equipped with one second
Sealing ring, the second sealing ring pressure are set between the diffusion silicon core and the pressure inlet.
10. miniflow pressure gauge as claimed in any one of claims 1-9 wherein, which is characterized in that the conversion equipment passes through screw
It is fixedly connected on the pressure inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818107.0A CN109489893A (en) | 2017-09-12 | 2017-09-12 | Miniflow pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818107.0A CN109489893A (en) | 2017-09-12 | 2017-09-12 | Miniflow pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109489893A true CN109489893A (en) | 2019-03-19 |
Family
ID=65687810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818107.0A Withdrawn CN109489893A (en) | 2017-09-12 | 2017-09-12 | Miniflow pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109489893A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718605A (en) * | 2009-12-03 | 2010-06-02 | 李维平 | Sensor for measuring pressure of water in soil at bottom of dam, river and lake and measuring method |
| CN201993194U (en) * | 2011-01-05 | 2011-09-28 | 淄博飞雁先行测控技术有限公司 | Submerged type differential pressure transmitter |
| CN102901543A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Liquid level sensor |
| CN203364917U (en) * | 2013-07-22 | 2013-12-25 | 无锡交大银河科技有限公司 | High-precision water level gauge and osmometer |
| CN203672552U (en) * | 2013-12-06 | 2014-06-25 | 天水华天传感器有限公司 | Pressure transmitter |
| CN207248422U (en) * | 2017-09-12 | 2018-04-17 | 上海朝辉压力仪器有限公司 | Miniflow pressure gauge |
-
2017
- 2017-09-12 CN CN201710818107.0A patent/CN109489893A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718605A (en) * | 2009-12-03 | 2010-06-02 | 李维平 | Sensor for measuring pressure of water in soil at bottom of dam, river and lake and measuring method |
| CN201993194U (en) * | 2011-01-05 | 2011-09-28 | 淄博飞雁先行测控技术有限公司 | Submerged type differential pressure transmitter |
| CN102901543A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Liquid level sensor |
| CN203364917U (en) * | 2013-07-22 | 2013-12-25 | 无锡交大银河科技有限公司 | High-precision water level gauge and osmometer |
| CN203672552U (en) * | 2013-12-06 | 2014-06-25 | 天水华天传感器有限公司 | Pressure transmitter |
| CN207248422U (en) * | 2017-09-12 | 2018-04-17 | 上海朝辉压力仪器有限公司 | Miniflow pressure gauge |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190319 |