CN110470425A - A kind of pressure sensor reducing pressure pulse - Google Patents
A kind of pressure sensor reducing pressure pulse Download PDFInfo
- Publication number
- CN110470425A CN110470425A CN201810446781.5A CN201810446781A CN110470425A CN 110470425 A CN110470425 A CN 110470425A CN 201810446781 A CN201810446781 A CN 201810446781A CN 110470425 A CN110470425 A CN 110470425A
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- China
- Prior art keywords
- pressure
- shell
- bottom plate
- pressure sensor
- pressure chamber
- 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.)
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- 239000007788 liquid Substances 0.000 claims abstract description 28
- 210000003205 muscle Anatomy 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 18
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000035485 pulse pressure Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
Abstract
The invention discloses a kind of pressure sensors for reducing pressure pulse, belong to sensor field.The pressure sensor includes pressure sensing element, bottom plate, shell and buffer structure；Shell is fixed on the top of bottom plate, forms pressure chamber between institute shell and bottom plate；Buffer structure is arranged inside pressure chamber, and buffer structure includes at least floating structure and damping muscle array；2 pipelines are provided on shell, pressure sensing element is fixed on the shell and is located therein the top of 1 pipeline；Solve the problems, such as that existing pressure sensor is easily damaged failure when pressure pulse occurs in liquid；The Measurement reliability for improving pressure sensor, the service life for increasing pressure sensor are achieved the effect that.
Description
Technical field
The present embodiments relate to sensor field, in particular to a kind of pressure sensor for reducing pressure pulse.
Background technique
Pressure sensor is a kind of device that gas, the pressure of liquid, negative pressure and absolute pressure are converted to electric signal.
When pressure sensor to be arranged in runner to the pressure to measure liquid, if the valve of runner is closed suddenly or
Turn down, rapid drawdown therewith is zero or the speed of very little by the flow velocity of liquid in runner, this in a flash, most of kinetic energy of liquid is all
The pressure energy for being converted to liquid makes liquid generate instantaneous excess pressure, forms pressure surge.At this point, pressure sensor can be felt
The surge pressure instantaneously generated is measured, this surge pressure instantaneously generated can seriously affect the use longevity of pressure sensor
Life.In the prior art, the pressure sensor of wide range can be generally selected, to guarantee the liquid in runner when generating surge pressure
Pressure sensor can work normally, but the pressure sensor of wide range is at high cost, precision is low, it may appear that be difficult to meet reality
The problem of measurement demand.
Summary of the invention
In order to solve problems in the prior art, the embodiment of the invention provides a kind of pressure sensings for reducing pressure pulse
Device.The technical solution is as follows:
In a first aspect, providing a kind of pressure sensor for reducing pressure pulse, pressure sensor includes pressure-sensing member
Part, bottom plate, shell and buffer structure；
Shell is fixed on the top of bottom plate, forms pressure chamber between institute shell and bottom plate；
Buffer structure is arranged inside pressure chamber, and buffer structure is for reducing pressure pulse；Buffer structure includes at least floating
Dynamic structure and damping muscle array；
2 pipelines are provided on shell, pressure sensing element is fixed on the shell and is located therein the top of 1 pipeline.
Optionally, buffer structure further includes the damping muscle of setting on the shell；
Pressure chamber is damped muscle and is divided into two pressure chambers；
Two pressure chamber connections.
Optionally, the first pipeline is located at the top of First pressure chamber；First pipeline is for enabling fluid inflow pressure chamber；
It is intracavitary that floating structure is located at first pressure；
Floating structure is made of buffer board and spring, and one end of spring is fixed on bottom plate, and buffer board is fixed on spring
The other end.
Optionally, the second pipeline is located at the top of second pressure chamber；
It is intracavitary in second pressure, damping muscle array is provided on bottom plate.
Optionally, the top of the second pipeline is arranged in pressure sensing element.
Technical solution provided in an embodiment of the present invention has the benefit that
The pressure sensor of the reduction pressure pulse includes pressure sensing element, bottom plate, shell and buffer structure, buffering knot
Structure includes floating structure and damping muscle array, and buffer structure is arranged in inside the pressure chamber formed after bottom plate and shell fixation, outside
2 pipelines, the top fixation pressure sensing element of a pipeline, another pipeline influent, liquid entrance are provided on shell
Pressure chamber, since pressure chamber is internally provided with buffer structure, buffer structure effectively reduces the surge pressure of transient liquid generation；
Solve the problems, such as that existing pressure sensor is easily damaged failure when pressure pulse occurs in liquid；Reach and has improved pressure
The Measurement reliability of sensor, increase pressure sensor service life effect.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of sensor for reducing pressure pulse shown according to an exemplary embodiment.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to FIG. 1, it illustrates a kind of knots for the sensor for reducing pressure pulse provided by one embodiment of the present invention
Structure schematic diagram.As shown in Figure 1, the sensor of the reduction pressure pulse includes pressure sensing element 1, bottom plate 2, shell 3 and buffering
Structure.
Shell 3 is fixed on the top of bottom plate 2, forms pressure chamber before shell 3 and bottom plate 2.
Optionally, it is an entirety that shell 3 and bottom plate 2, which pass through laser seal welding,.
Optionally, shell 3 and bottom plate 2 use metal injection molded contour machining procedure.Utilize metal injection molded contour machining procedure
Manufacture material can be saved, complex-shaped structure is easily processed.
The inside of pressure chamber is arranged in buffer structure.Buffer structure is for reducing pressure pulse.Buffer structure includes at least
Floating structure and damping muscle array 8.
When detecting the pressure of liquid, in the pressure chamber of liquid inlet pressure sensor.
2 pipelines, i.e. the first pipeline 61 and the second pipeline 62 are provided on shell 3.
Pressure sensing element 1 is fixed on shell 3 and is located therein the top of 1 pipeline.
First pipeline 61 is for enabling fluid inflow pressure chamber.
The top of the second pipeline 62 on shell 3 is arranged in pressure sensing element 1.
Pressure sensing element is used to measure the pressure of liquid.Pressure sensing element can be connect with circuit board, and transmission corresponds to
The electric signal of pressure.
Buffer structure further includes the damping muscle 7 being arranged on shell 3.
As shown in Figure 1, the pressure chamber formed between shell 3 and bottom plate 2, which is damped muscle 7, is divided into two pressure chambers, i.e.,
One pressure chamber 51 and second pressure chamber 52.
It damps there are gap between muscle 7 and bottom plate 2, two pressure chambers are connected to.Control damping muscle 7 and bottom plate 2 can be passed through
Between gap come increase liquid resistance, when the gap between liquid flow overdamp muscle 7 and bottom plate 2, consume pressure energy.
The top of First pressure chamber 51 is arranged in first pipeline 61.
Floating structure is located in First pressure chamber 51, and floating structure is made of buffer board 41 and spring 42, and the one of spring 42
End is fixed on a base plate 2, and buffer board 41 is fixed on the other end of spring 42.
Liquid is directly entered First pressure chamber 51 after the inflow of the first pipeline 61, when fluid pressure suddenly increases to predetermined value
When, fluid pressure is transmitted on spring 42 by buffer board 41, and spring 42 compresses, and the pressure energy of liquid is converted to the elasticity of spring
Potential energy reduces pressure pulse.
It can be according to the size of issuable pressure energy in actual use, to select the bullet of different stiffness factors
Spring.
Liquid into First pressure chamber 51 passes through the gap between damping muscle 7 and bottom plate 2, into second pressure chamber 52.
Second pipeline 62 is located at the top of second pressure chamber 52, and liquid is connect by second pipe 62 with pressure sensing element 1
Touching.
In second pressure chamber 52, damping muscle array 8 is provided on bottom plate 2.
Damping muscle array 8 on bottom plate 2 in second pressure chamber 52 is concaveconvex structure, can increase the friction of backplate surface
Coefficient can reduce the flow velocity of liquid when liquid flow is out-of-date, play the effect of consumption pressure energy.
Optionally, intracavitary in first pressure, damping muscle array is not provided on bottom plate 2；Alternatively, bottom intracavitary in first pressure
Damping muscle array is provided on plate 2.
As shown in Figure 1, the flow direction in pressure sensor of liquid are as follows: liquid S enters pressure from the first pipeline 61
The First pressure chamber 51 of sensor internal, then enter second pressure chamber 52 from First pressure chamber 51, by the second pipeline 62 and pressure
Power sensing element 1 contacts.
In conclusion the pressure sensor provided in an embodiment of the present invention for reducing pressure pulse, including pressure sensing element,
Bottom plate, shell and buffer structure, buffer structure include floating structure and damping muscle array, and buffer structure is arranged in bottom plate and shell
It is provided with 2 pipelines inside the pressure chamber formed after fixation, on shell, the top fixation pressure sensing element of a pipeline, separately
One pipeline influent, liquid inlet pressure chamber, since pressure chamber is internally provided with buffer structure, buffer structure effectively subtracts
The surge pressure that small transient liquid generates；It solves existing pressure sensor and is easily damaged mistake when pressure pulse occurs in liquid
The problem of effect；The Measurement reliability for improving pressure sensor, the service life for increasing pressure sensor are achieved the effect that.
It should be understood that the serial number of the above embodiments of the invention is only for description, do not represent the advantages or disadvantages of the embodiments.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. it is a kind of reduce pressure pulse pressure sensor, which is characterized in that the pressure sensor include pressure sensing element,
Bottom plate, shell and buffer structure；
The shell is fixed on the top of the bottom plate, forms pressure chamber between the shell and the bottom plate；
The buffer structure is arranged inside the pressure chamber, and the buffer structure is for reducing pressure pulse；The buffering knot
Structure includes at least floating structure and damping muscle array；
2 pipelines are provided on the shell, the pressure sensing element is fixed on the housing and is located therein 1 pipeline
Top.
2. pressure sensor according to claim 1, which is characterized in that the buffer structure further includes setting described outer
Damping muscle on shell；
The pressure chamber is divided into two pressure chambers by the damping muscle；
Described two pressure chamber connections.
3. pressure sensor according to claim 2, which is characterized in that first pipeline is located at the upper of First pressure chamber
Side；First pipeline is for enabling liquid flow into the pressure chamber；
It is intracavitary that the floating structure is located at the first pressure；
The floating structure is made of buffer board and spring, and one end of the spring is fixed on the bottom plate, the buffer board
It is fixed on the other end of the spring.
4. pressure sensor according to claim 2, which is characterized in that second pipeline is located at the upper of second pressure chamber
Side；
It is intracavitary in the second pressure, the damping muscle array is provided on the bottom plate.
5. pressure sensor according to claim 1, which is characterized in that the pressure sensing element is arranged in the second pipeline
Top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446781.5A CN110470425A (en) | 2018-05-11 | 2018-05-11 | A kind of pressure sensor reducing pressure pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446781.5A CN110470425A (en) | 2018-05-11 | 2018-05-11 | A kind of pressure sensor reducing pressure pulse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110470425A true CN110470425A (en) | 2019-11-19 |
Family
ID=68504068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810446781.5A Pending CN110470425A (en) | 2018-05-11 | 2018-05-11 | A kind of pressure sensor reducing pressure pulse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110470425A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422680A (en) * | 1967-01-18 | 1969-01-21 | Kingmann White | Differential pressure-responsive device |
| US6119525A (en) * | 1997-07-11 | 2000-09-19 | Dresser Industries, Inc. | Pressure gauge having dampener mechanism |
| US20030131666A1 (en) * | 2002-01-16 | 2003-07-17 | Randy Ewers | Pressure sensing apparatus having pressure pulse dampener |
| CN2935108Y (en) * | 2006-07-04 | 2007-08-15 | 武汉钢铁(集团)公司 | Pressure tapping catheter pulsating anti-interference damper |
| CN201788055U (en) * | 2010-03-23 | 2011-04-06 | 昆山市创新科技检测仪器有限公司 | Force sensor calibration device and weight deflection preventing device thereof |
| CN204679207U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | The two damping pressure transmitter of a kind of binodal |
| CN205504326U (en) * | 2015-12-03 | 2016-08-24 | 武汉航空仪表有限责任公司 | Hydraulic cushion system - structure for instrument |
| CN205593683U (en) * | 2016-03-18 | 2016-09-21 | 盐城师范学院 | Optic fibre pressure sensor |
| CN206450346U (en) * | 2016-12-29 | 2017-08-29 | 无锡盛邦电子有限公司 | A kind of encapsulating structure of pressure sensor |
| CN208187623U (en) * | 2018-05-11 | 2018-12-04 | 无锡盛邦电子有限公司 | A kind of pressure sensor reducing pressure pulse |
-
2018
- 2018-05-11 CN CN201810446781.5A patent/CN110470425A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422680A (en) * | 1967-01-18 | 1969-01-21 | Kingmann White | Differential pressure-responsive device |
| US6119525A (en) * | 1997-07-11 | 2000-09-19 | Dresser Industries, Inc. | Pressure gauge having dampener mechanism |
| US20030131666A1 (en) * | 2002-01-16 | 2003-07-17 | Randy Ewers | Pressure sensing apparatus having pressure pulse dampener |
| CN2935108Y (en) * | 2006-07-04 | 2007-08-15 | 武汉钢铁(集团)公司 | Pressure tapping catheter pulsating anti-interference damper |
| CN201788055U (en) * | 2010-03-23 | 2011-04-06 | 昆山市创新科技检测仪器有限公司 | Force sensor calibration device and weight deflection preventing device thereof |
| CN204679207U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | The two damping pressure transmitter of a kind of binodal |
| CN205504326U (en) * | 2015-12-03 | 2016-08-24 | 武汉航空仪表有限责任公司 | Hydraulic cushion system - structure for instrument |
| CN205593683U (en) * | 2016-03-18 | 2016-09-21 | 盐城师范学院 | Optic fibre pressure sensor |
| CN206450346U (en) * | 2016-12-29 | 2017-08-29 | 无锡盛邦电子有限公司 | A kind of encapsulating structure of pressure sensor |
| CN208187623U (en) * | 2018-05-11 | 2018-12-04 | 无锡盛邦电子有限公司 | A kind of pressure sensor reducing pressure pulse |
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