CN104483060B - Liquid-pressure pick-up - Google Patents
Liquid-pressure pick-up Download PDFInfo
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- CN104483060B CN104483060B CN201410664294.8A CN201410664294A CN104483060B CN 104483060 B CN104483060 B CN 104483060B CN 201410664294 A CN201410664294 A CN 201410664294A CN 104483060 B CN104483060 B CN 104483060B
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- sensor
- flexible sheet
- liquid
- outer sleeve
- inner sleeve
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Abstract
The present invention relates to a kind of liquid-pressure pick-up, it is used for the sensor support block assembly of install sensor test suite with one, the sensor support block assembly is fixedly connected in sensor base, sensor outer sleeve and sensor inner sleeve are housed in sensor base, respectively be provided with sensor outer sleeve and sensor inner sleeve the side wall offer one group be staggered into, go out the slotted hole of liquid, and the slotted hole length direction on sensor inner sleeve and sensor outer sleeve axis direction are in 45 degree, slotted hole length direction on sensor outer sleeve is consistent with sensor outer sleeve axis direction, make the liquid fluctuation decay between flow sensor inner sleeve bucket, so that the test value smooth fluctuations of liquid level, improve measuring accuracy；Sensor flexible sheet is fixed on sensor flexible sheet support base, is disposed with resistance strain gage on sensor flexible sheet in sensor test component, using straining built-in testing its fluid pressure for bearing.
Description
Technical field
The present invention relates to a kind of sensor, especially a kind of liquid-pressure pick-up.
Background technology
Liquid level sensor（Static pressure liquid level meter/fluid level transmitter/liquid level sensor/level sensor）It is a kind of measurement liquid level
Pressure sensor be, based on the surveyed fluid pressure principle proportional to the height of the liquid, static pressure to be converted into electric signal,
Again by temperature-compensating and linear amendment, the liquid level sensor of standard electric signal is changed into.Suitable for petrochemical industry, metallurgy, electricity
The level gauging of the various media of the systems such as power, pharmacy, water supply and sewage, environmental protection and industry.Exquisite structure, simple adjustment and spirit
Mounting means living is easily convenient using providing for user.But it is at present, also flexible without a kind of simple in construction, installation adjustment
Liquid-pressure pick-up.
The content of the invention
The present invention is to provide for a kind of liquid-pressure pick-up, can ensure that well using the special construction of sensor
The test performance and watertightness of sensor, the structure of its inside and outside sleeve and the liquid inlet and outlet of special arrangement can effectively subtract
Slow influence of the liquid fluctuation to measuring stability and its precision, its testing elastic module can easily be changed different to adapt to
Testing range and load character, it is ensured that the high accuracy and high stability of measurement.
To achieve the above object, the technical scheme is that：A kind of liquid-pressure pick-up, is used to install with one
The sensor support block assembly of sensor test component, the sensor support block assembly is fixedly connected in sensor base,
Sensor outer sleeve and sensor inner sleeve, sensor outer sleeve and sensor inner sleeve the side wall are housed in sensor base
On be respectively provided with and offer one group and be staggered into and out of the slotted hole length direction on the slotted hole of liquid, and sensor inner sleeve
It is in slotted hole length direction and sensor outer sleeve axis on 45 degree, sensor outer sleeve with sensor outer sleeve axis direction
Direction is consistent, makes the liquid fluctuation decay between flow sensor inner sleeve bucket, so that the test value smooth fluctuations of liquid level, improve and survey
Try precision；In sensor test component sensor flexible sheet be fixed on sensor flexible sheet support base, sensor elasticity
Resistance strain gage is disposed with diaphragm, using straining built-in testing its fluid pressure for bearing.
Sensor support block in the sensor support block assembly is provided with bleeder port, micro-vacuum room, elastic film, profit
Deformed with the absorption of bleeder port, elastic film and micro-vacuum room by sensor flexible sheet and temperature change causes sensor elasticity
Air decrement between diaphragm and sensor flexible sheet support base.
It is fixedly connected, is formed with pressure ring and bolt between the sensor elastic membrane and sensor flexible sheet support base
Peripheral annular edge constraint, it is possible to different-thickness and different types of sensing are easily changed according to the demand of testing range
Device flexible sheet, to reach effect that testing range is variable.
The sensor flexible sheet support base is cone structure, can be effectively reduced lateral pressure to sensor elastic membrane
Stress influence.
The beneficial effects of the invention are as follows：
1. the liquid of the inside and outside set bucket of sensor is in respectively and set bucket diameter parallel arrangement and 45 degree of angle cloth into and out of slotted hole
Put, the liquid fluctuation between flow sensor inner sleeve bucket is effectively decayed so that the test value of liquid level reduces fluctuation and become
Steadily.So as to improve measuring accuracy.
2. absorbed using the bleeder port in sensor support block, elastic film and micro-vacuum room because sensor elastic membrane is produced
Elastic deformation can cause the air of sealing space between sensor elastic membrane and sensor elastic membrane support base to compress and due to temperature
The such environmental effects such as degree cause the volume of air of sealing space between sensor elastic membrane and sensor elastic membrane support base to become
Change and produce certain air compression force, effectively overcome the influence that these factors are brought to measuring accuracy.
3. being fixedly connected between sensor elastic membrane and sensor elastic membrane support base using pressure ring and bolt, circle is formed
All annular edge constraints, it is possible to different-thickness and different types of sensor are easily changed according to the demand of testing range
Elastic membrane, to reach effect that testing range is variable.
4. sensor elastic membrane support base uses cone structure, lateral pressure can be effectively reduced to sensor elastic membrane
Stress influences.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is sensor base structural representation；
Fig. 3 is sensor support block structure schematic diagram；
Fig. 4 is sensor outer sleeve structure schematic diagram；
Fig. 5 is sensor inner sleeve structure schematic diagram；
Fig. 6 is sensor flexible sheet structural representation；
Fig. 7 is sensor test modular construction schematic diagram.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of liquid-pressure pick-up, including sensor base 1, sensor outer sleeve 2, sensor inner sleeve
Cylinder 3, sensor test component 4, sensor support block assembly 5, wire guide 6 etc..
Sensor support block assembly 5 is fixedly connected in sensor base 1, and sensor overcoat is housed in sensor base 1
Respectively it is provided with cylinder 2 and sensor inner sleeve 3, sensor outer sleeve 2 and the side wall of sensor inner sleeve 3 and offers one group and be staggered
It is in 45 into and out of the slotted hole length direction on the slotted hole of liquid, and sensor inner sleeve 3 and sensor outer sleeve axis direction
Slotted hole length direction on degree, sensor outer sleeve 2 is consistent with sensor outer sleeve axis direction, makes flow sensor inner sleeve
Liquid fluctuation decay between bucket, so that the test value smooth fluctuations of liquid level, improve measuring accuracy.
As shown in fig. 7, the sensor flexible sheet 12 in sensor test component 4 is fixed on the support of sensor flexible sheet
On seat 11, on sensor flexible sheet 12 resistance strain gage 13 is disposed with, using straining built-in testing its fluid pressure for bearing.Pass
It is fixedly connected between sensor flexible sheet 12 and sensor flexible sheet support base 11 with pressure ring and bolt, forms peripheral annular
Edge constraint., different-thickness and different types of sensor elastic membrane can be easily changed according to the demand of testing range,
To reach effect that testing range is variable.Sensor flexible sheet support base 11 is cone structure, can be effectively reduced side pressure
Power influences on the stress of sensor elastic membrane.
As shown in figure 3, being provided with bleeder port 21, micro-vacuum room in sensor support block 27 in sensor support block assembly 5
24th, elastic film 23, absorbed using bleeder port 21, elastic film 23 and micro-vacuum room 24 deformed by sensor flexible sheet and
Temperature change causes the changes in air volume amount between sensor flexible sheet and sensor flexible sheet support base.
The concrete structure of the present invention：
（1）Sensor base 1（Fig. 2）：In support, install sensor test suite 4, sensor outer sleeve 2, sensor
Sleeve 3, sensor support block 5 etc., and bear all load.Respectively assembling is threadedly coupled with sensor inner and outer sleeves.See Fig. 1.
（2）Sensor test component 4（Fig. 7）：By sensor flexible sheet support base 11, sensor flexible sheet 12, answer
Become piece 13, bolt 14, pressure ring 15, bolt hole 16 to constitute.It is transferred to sensor the uniform load that sensor test component 4 is born
Base.It is connected between sensor test component 4 and support block 5, install sensor flexible sheet 12 on test suite 4,
The lower surface of sensor flexible sheet 12 pastes foil gauge 13.On sensor flexible sheet 12 biography is fixed on bolt 14 and pressure ring 15
On sensor flexible sheet support base 11, peripheral annular edge constraint is formed, and play a part of auxiliary seal..
（3）Sensor outer sleeve 2（Fig. 4）：Sensor outer sleeve 2 coordinates with the screw thread of sensor base 1, with sensor inner sleeve
Cylinder 3 forms the holding of test liquid level.One group is offered thereon to be staggered into and out of the slotted hole of liquid, length direction and sensing
Device outer sleeve axis direction is consistent.See Fig. 1.
（4）Sensor inner sleeve 3（Fig. 5）：Sensor inner sleeve 3 coordinates with the screw thread of sensor base 1, with sensor overcoat
Cylinder 2 forms the holding of test liquid level.One group is offered thereon to be staggered into and out of the slotted hole of liquid, length direction and sensing
Device outer sleeve axis direction is in 45 degree.See Fig. 1.
（5）Sensor flexible sheet 12（Fig. 6）：Stress test element.Resistance strain gage 13 is disposed with thereon, with sensor
Flexible sheet support base 11 constitutes stress test component, and resistance strain gage 13 is arranged on the inside of component.Sensor flexible sheet 12
It is connected by screw bolts with sensor flexible sheet support base 11.
（6）Sensor flexible sheet support base 11：Stress test support component.Stress is constituted with sensor flexible sheet 12
Test suite.Sensor flexible sheet support base 11 is connected by screw bolts with sensor base 1 and sealed with elastic seal ring.See
Fig. 7.
The present invention function be：
（1）Sensor base 1：Support, install sensor test suite 4, sensor outer sleeve 2, sensor inner sleeve 3,
Sensor flexible sheet 12, sensor flexible sheet support base 3, sensor support block assembly 5 etc., and bear all load.Point
Assembling is not threadedly coupled with sensor inner and outer sleeves 3,2.See Fig. 2.
（2）Sensor support block assembly 5（Fig. 3）：By sensor support block 27, bleeder port 21, inner seal ring 22, elasticity
Film 23, micro-vacuum room 4, fixed block 5, exterior seal ring 6 are constituted.Bleeder port 21, sensor branch are provided with sensor support block 27
Elastic film is installed by fixed block 25 and inner seal ring 22 provided with micro-vacuum room 24, the upper end of micro-vacuum room 24 in bracer 27
23, elastic film 23 is connected with bleeder port 21, and the lower surface of sensor support block 27 is equipped with exterior seal ring 6.For by sensor
It is transferred to sensor base 1 uniform load that the primary structure members such as flexible sheet 12, sensor flexible sheet support base 11 are born,
Using the bleeder port 21 in the middle of it, elastic film 22 and micro-vacuum room 24, absorb deformed by sensor flexible sheet well
And the changes in air volume amount caused by temperature etc. between sensor flexible sheet and sensor flexible sheet support base.,
Play a part of auxiliary seal using sealing ring simultaneously.See Fig. 3.
（3）Sensor outer sleeve 2：Drum-shaped.Holding and decay liquid wave with the formation test liquid level of sensor inner sleeve 3
It is dynamic.Top center offers one into and out of liquid circular hole, and sidepiece offers one group and is staggered into and out of the slotted hole of liquid, oval
The length direction in hole is consistent with sensor outer sleeve axis direction.
（4）Sensor inner sleeve 3：Drum-shaped.Holding and decay liquid wave with sensor inner sleeve formation test liquid level
It is dynamic.Its upper top along the circumferential direction uniformly offers one group of circular hole into and out of liquid, and sidepiece along the circumferential direction uniformly offers one
Group is into and out of the slotted hole of liquid, and length direction and the sensor outer sleeve axis direction of slotted hole are in dislocation after 45 degree, and installation
Arrangement.
（5）Sensor flexible sheet 12：Stress test element.Resistance strain gage 13 is disposed with thereon, with sensor elasticity
Diaphragm support seat 11 constitutes stress test component, and resistance strain gage 13 is arranged on the inside of component.Sensor flexible sheet 12 is with passing
Sensor flexible sheet support base 11 is fixed using pressure ring 15 with bolt.The thickness of sensor flexible sheet 12 can be according to different surveys
Examination is required and configured.
(6）Sensor flexible sheet support base 11：Stress test support component, conical structure.With sensor flexible sheet
12 constitute stress test component.Sensor flexible sheet support base 11 is connected by screw bolts with sensor base 1, is provided with therebetween
Sensor support block 27, elastic film 22 and elastic seal ring.
The operation principle of the present invention：
When sensor is placed in liquid, liquid is by the liquid of sensor overcoat bucket into and out of slotted hole flow sensor
Space between inside and outside set bucket, and by sensor inner sleeve bucket liquid into and out of slotted hole flow sensor inner sleeve bucket space, shape
Into certain liquid volume.The pressure to sensor elastic membrane is produced under the weight effect of the liquid volume, in sensor bullet
Property film support base and sensor base support under make sensor elastic membrane produce elastic deformation.Using being arranged in sensor bullet
Its fluid pressure for bearing of strain built-in testing on property film.It can cause sensor bullet because sensor elastic membrane produces elastic deformation
Property film and sensor elastic membrane support base between sealing space air compression, the air decrement can produce certain air pressure
Contracting power, simultaneously because the such environmental effects such as temperature also result in it is close between sensor elastic membrane and sensor elastic membrane support base
The changes in air volume for sealing space produces certain air compression force, and these factors will influence the measuring accuracy of sensor.This
When the sensor support block that is set between sensor base and sensor elastic membrane support base in bleeder port, elastic film with
Micro-vacuum room will effectively absorb this air pressure to ensure measuring accuracy.
Claims (4)
1. a kind of liquid-pressure pick-up, is used for the sensor support block assembly of install sensor test suite (4) with one
(5), the sensor support block assembly (5) is fixedly connected in sensor base (1), equipped with sensing in sensor base (1)
Device outer sleeve (2) and sensor inner sleeve (3), it is characterised in that：The sensor outer sleeve (2) and sensor inner sleeve (3)
One group is respectively offered on the wall of side to be staggered into and out of the oval hole length side on the slotted hole of liquid, and sensor inner sleeve (3)
To being in 45 degree with sensor outer sleeve axis direction, slotted hole length direction and sensor overcoat on sensor outer sleeve (2)
Cylinder axis direction is consistent, the liquid fluctuation between flow sensor inner sleeve is decayed, so that the test value smooth fluctuations of liquid level,
Improve measuring accuracy；Sensor flexible sheet (12) in sensor test component (4) is fixed on the support of sensor flexible sheet
On seat (11), on sensor flexible sheet (12) resistance strain gage (13) is disposed with, using straining built-in testing its liquid for bearing
Pressure.
2. liquid-pressure pick-up according to claim 1, it is characterised in that：In the sensor support block assembly (5)
Sensor support block (27) be provided with bleeder port (21), micro-vacuum room (24), elastic film (23), using bleeder port (21),
Elastic film (23) and micro-vacuum room (24) absorption are deformed by sensor flexible sheet and temperature change causes sensor elasticity
Changes in air volume amount between diaphragm and sensor flexible sheet support base.
3. liquid-pressure pick-up according to claim 1, it is characterised in that：The sensor flexible sheet (12) is with passing
It is fixedly connected between sensor flexible sheet support base (11) with pressure ring and bolt, forms peripheral annular edge constraint, it is possible to
Different-thickness and different types of sensor flexible sheet are easily changed according to the demand of testing range, to reach test volume
The variable effect of journey.
4. liquid-pressure pick-up according to claim 1, it is characterised in that：The sensor flexible sheet support base
(11) it is cone structure, can be effectively reduced lateral pressure influences on the stress of sensor flexible sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664294.8A CN104483060B (en) | 2014-11-19 | 2014-11-19 | Liquid-pressure pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664294.8A CN104483060B (en) | 2014-11-19 | 2014-11-19 | Liquid-pressure pick-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104483060A CN104483060A (en) | 2015-04-01 |
| CN104483060B true CN104483060B (en) | 2017-08-25 |
Family
ID=52757630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664294.8A Expired - Fee Related CN104483060B (en) | 2014-11-19 | 2014-11-19 | Liquid-pressure pick-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104483060B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19521832A1 (en) * | 1995-06-16 | 1996-12-19 | Bosch Gmbh Robert | Pressure measuring device |
| JPH10325771A (en) * | 1997-05-26 | 1998-12-08 | Matsushita Electric Works Ltd | Semiconductor pressure sensor |
| CN201653494U (en) * | 2010-01-25 | 2010-11-24 | 浙江无限新能源股份有限公司 | Elastic liquid level sensor |
| CN102322918B (en) * | 2011-05-25 | 2012-11-21 | 太原理工大学 | Digital liquid level sensor |
| CN202614327U (en) * | 2012-05-14 | 2012-12-19 | 常州迪泰科特测控设备有限公司 | Mining water level sensor |
| CN203929310U (en) * | 2014-05-14 | 2014-11-05 | 蚌埠高灵传感系统工程有限公司 | A kind of oil-field flooding pressure transducer |
-
2014
- 2014-11-19 CN CN201410664294.8A patent/CN104483060B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104483060A (en) | 2015-04-01 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20191119 |