CN105547566A - High-precision temperature compensation pressure sensor - Google Patents
High-precision temperature compensation pressure sensor Download PDFInfo
- Publication number
- CN105547566A CN105547566A CN201510875596.4A CN201510875596A CN105547566A CN 105547566 A CN105547566 A CN 105547566A CN 201510875596 A CN201510875596 A CN 201510875596A CN 105547566 A CN105547566 A CN 105547566A
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- China
- Prior art keywords
- diaphragm
- connecting rod
- temperature compensation
- precision temperature
- cavity
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
- G01L7/185—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges with mechanical transmitting or indicating 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
- G01L19/04—Means for compensating for effects of changes of temperature, i.e. other than electric compensation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention discloses a high-precision temperature compensation pressure sensor. The high-precision temperature compensation pressure sensor comprises a header and a gauge stand, the header includes a transmission indication mechanism and a housing, and the transmission indication mechanism is located in the housing; the transmission indication mechanism includes a Bourdon pressure element tube, a connecting rod, a gear drive assembly, a pointer and a dial, one end of the Bourdon pressure element tube is connected with the gear drive assembly, and the connecting rod is provided with a bending part; the pointer is connected with the gear drive assembly; the gauge stand is connected with the header, the gauge stand is internally provided with a cavity, and the cavity is internally provided with a first diaphragm; the first diaphragm and the cavity match to form a liquid storage cavity conducting with the Bourdon pressure element tube; and one side, far away from the liquid storage cavity, of the first diaphragm is provided with a second diaphragm, and there is provided a gap between the first diaphragm and the second diaphragm to form a compensation space configured for predeformation of the second diaphragm. According to the invention, any pressure variation only caused by temperature variation may be compensated, so that the accuracy of the measured value of a pressure gage is ensured and the measurement precision of a pressure sensor is improved.
Description
Technical field
The present invention relates to technology of instrument and meter field, particularly relate to a kind of high precision temperature compensation type pressure transducer.
Background technology
Diaphragm pressure gage is applicable to measure tool corrosivity, high viscosity, easily crystallization, easily solidify, the pressure of the liquid that temperature is higher, gas or granular solids medium and measuring media must be avoided directly to enter manometer and prevent precipitate buildup and the occasion of easy cleaning.Diaphragm pressure gage is mainly used in the industrial sectors such as oil, chemical industry, chemical fibre, dye, pharmacy, alkaline food.
But because pressure sensor systems is by being filled with the medium of manometric liquid as transmission of pressure, and manometric liquid limits by expansion coefficient characteristic, displayed value also raises with the rising of compression zone temperature to make tensimeter, especially for the tensimeter of lower range, then affects more obvious.Therefore its measuring accuracy of pressure transducer temperature influence is always on the low side.
Summary of the invention
Based on the technical matters that above-mentioned background technology exists, the present invention proposes a kind of high precision temperature compensation type pressure transducer, this pressure transducer can compensate any pressure change only caused due to temperature variation, to guarantee the accuracy of gauge measurement value.
The present invention proposes a kind of high precision temperature compensation type pressure transducer, comprising: gauge outfit and gauge stand,
Described gauge outfit comprises transmission indicating mechanism and shell, transmission indicating mechanism is positioned at shell, transmission indicating mechanism comprises boolean and steps on pressure elements pipe, connecting rod, gear-driven assembly, pointer and scale, one end that boolean steps on pressure elements pipe is connected with connecting rod, the other end of connecting rod is connected with gear-driven assembly, and the medium position on connecting rod between two ends is provided with the bending part to curving;
Pointer is connected with gear-driven assembly, and pointer coordinates with scale and is used to indicate force value;
Described gauge stand is connected with gauge outfit, is provided with cavity in gauge stand, is provided with primary diaphragm in cavity; Primary diaphragm coordinates with cavity to be formed steps on the liquid storage cylinder of pressure elements pipe conducting for encapsulating manometric liquid with boolean; Primary diaphragm is provided with secondary diaphragm away from the side of liquid storage cylinder, is reserved with gap and forms the compensation space supplying secondary diaphragm predeformation between secondary diaphragm and primary diaphragm.
Preferably, primary diaphragm adopts convoluted diaphragm.
Preferably, secondary diaphragm adopts convoluted diaphragm.
Preferably, primary diaphragm adopts convoluted diaphragm, and secondary diaphragm adopts convoluted diaphragm, and the wave groove/ripple peak of primary diaphragm and the wave groove/ripple peak of secondary diaphragm are corresponding in turn in order.
Preferably, the shape of connecting rod is Ω shape.
Preferably, shell comprises watchcase and cover circle.
In the present invention, in gauge stand, be provided with cavity, in cavity, be provided with primary diaphragm; Primary diaphragm coordinates with cavity to be formed steps on the liquid storage cylinder of pressure elements pipe conducting for encapsulating manometric liquid with boolean; Primary diaphragm is provided with secondary diaphragm away from the side of liquid storage cylinder, is reserved with gap and forms the compensation space supplying secondary diaphragm predeformation between secondary diaphragm and primary diaphragm; When tensimeter answers splenium temperature to raise, the secondary diaphragm being positioned at liquid storage cylinder bears pressure in advance and produces deformation, the compensation space supplying secondary diaphragm predeformation is formed owing to being reserved with gap between primary diaphragm and secondary diaphragm, therefore primary diaphragm can't be expressed to, also boolean can not be caused to step on the volume change of manometric liquid in pressure elements pipe, so the deflection of pointer can not be caused; Simultaneously, boolean in the present invention steps on liquid feeding end and the liquid storage cylinder conducting of pressure elements pipe, one end that boolean steps on away from liquid feeding end on pressure elements pipe is connected with gear-driven assembly by connecting rod, and the medium position on connecting rod between two ends is provided with the bending part to curving; When manometric liquid constancy of volume, the any pressure change only caused due to temperature variation, the connecting rod all just can stepped between pressure elements pipe and gear-driven assembly by being connected to boolean is compensated, this is because the medium position on connecting rod between two ends is provided with bending part to curving, bending part is that connecting rod forms certain elastic space allowing force deformation, therefore can not cause the deflection of pointer, and then ensure that the correctness of pressure indicator of pointer.
In sum, the present invention can compensate any pressure change only caused due to temperature variation, ensure that the accuracy of gauge measurement value, and then improves the measuring accuracy of pressure transducer.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high precision temperature compensation type pressure transducer that the present invention proposes.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
As shown in Figure 1, Fig. 1 is the structural representation of a kind of high precision temperature compensation type pressure transducer that the present invention proposes.
With reference to Fig. 1, a kind of high precision temperature compensation type pressure transducer that the embodiment of the present invention proposes, comprising: gauge outfit and gauge stand 1,
Described gauge outfit comprises transmission indicating mechanism 5 and shell 6, transmission indicating mechanism 5 is positioned at shell 6, transmission indicating mechanism 5 comprises boolean and steps on pressure elements pipe 51, connecting rod 52, gear-driven assembly 53, pointer 54 and scale 55, one end that boolean steps on pressure elements pipe 51 is connected with connecting rod 52, the other end of connecting rod 52 is connected with gear-driven assembly 53, medium position on connecting rod 52 between two ends is provided with the bending part 521 to curving, makes the shape of connecting rod 52 be Ω shape; Pointer 54 is connected with gear-driven assembly 53, and pointer 54 coordinates with scale 55 and is used to indicate force value; Because the medium position on connecting rod 52 between two ends is provided with the bending part 521 to curving, the elastic space of what bending part 521 was certain for connecting rod 52 is formed allow force deformation, therefore when manometric liquid constancy of volume, the any pressure change only caused due to temperature variation, the connecting rod 52 all just can stepped between pressure elements pipe 51 and gear-driven assembly 53 by being connected to boolean is compensated, the deflection of pointer 54 can not be caused, and then ensure that the correctness of pressure indicator of pointer 54.
Described gauge stand 1 is connected with gauge outfit, is provided with cavity in gauge stand 1, is provided with primary diaphragm 3 in cavity; Primary diaphragm 3 adopts convoluted diaphragm, and primary diaphragm 3 coordinates with cavity to be formed steps on the liquid storage cylinder 2 of pressure elements pipe 51 conducting for encapsulating manometric liquid with boolean; Primary diaphragm 3 is provided with secondary diaphragm 4 away from the side of liquid storage cylinder 2; Secondary diaphragm 4 adopts convoluted diaphragm, and the wave groove/ripple peak of primary diaphragm 3 and the wave groove/ripple peak of secondary diaphragm 4 are corresponding in turn in order, is reserved with gap and forms the compensation space supplying secondary diaphragm 4 predeformation between secondary diaphragm 4 and primary diaphragm 3; When tensimeter answers splenium temperature to raise, the secondary diaphragm 4 being positioned at liquid storage cylinder 2 bears pressure in advance and produces deformation, the compensation space supplying secondary diaphragm 4 predeformation is formed owing to being reserved with gap between primary diaphragm 3 and secondary diaphragm 4, therefore primary diaphragm 3 can't be expressed to, also boolean can not be caused to step on the volume change of manometric liquid in pressure elements pipe 51, so the deflection of pointer 54 can not be caused.
As from the foregoing, the present invention can compensate any pressure change only caused due to temperature variation, ensure that the accuracy of gauge measurement value, and then improves the measuring accuracy of pressure transducer.
In the present invention, in gauge stand, be provided with cavity, in cavity, be provided with primary diaphragm; Primary diaphragm coordinates with cavity to be formed steps on the liquid storage cylinder of pressure elements pipe conducting for encapsulating manometric liquid with boolean; Primary diaphragm is provided with secondary diaphragm away from the side of liquid storage cylinder, is reserved with gap and forms the compensation space supplying secondary diaphragm predeformation between secondary diaphragm and primary diaphragm; When tensimeter answers splenium temperature to raise, the secondary diaphragm being positioned at liquid storage cylinder bears pressure in advance and produces deformation, the compensation space supplying secondary diaphragm predeformation is formed owing to being reserved with gap between primary diaphragm and secondary diaphragm, therefore primary diaphragm can't be expressed to, also boolean can not be caused to step on the volume change of manometric liquid in pressure elements pipe, so the deflection of pointer can not be caused; Simultaneously, boolean in the present invention steps on liquid feeding end and the liquid storage cylinder conducting of pressure elements pipe, one end that boolean steps on away from liquid feeding end on pressure elements pipe is connected with gear-driven assembly by connecting rod, and the medium position on connecting rod between two ends is provided with the bending part to curving; When manometric liquid constancy of volume, the any pressure change only caused due to temperature variation, the connecting rod all just can stepped between pressure elements pipe and gear-driven assembly by being connected to boolean is compensated, this is because the medium position on connecting rod between two ends is provided with bending part to curving, bending part is that connecting rod forms certain elastic space allowing force deformation, therefore can not cause the deflection of pointer, and then ensure that the correctness of pressure indicator of pointer.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (6)
1. a high precision temperature compensation type pressure transducer, is characterized in that, comprising: gauge outfit and gauge stand (1);
Described gauge outfit comprises transmission indicating mechanism (5) and shell (6); Transmission indicating mechanism (5) is positioned at shell (6), transmission indicating mechanism (5) comprises boolean and steps on pressure elements pipe (51), connecting rod (52), gear-driven assembly (53), pointer (54) and scale (55), one end that boolean steps on pressure elements pipe (51) is connected with one end of connecting rod (52), the other end of connecting rod (52) is connected with gear-driven assembly (53), and the medium position on connecting rod (52) between two ends is provided with the bending part (521) to curving;
Pointer (54) is connected with gear-driven assembly (53), and pointer (54) coordinates with scale (55) and is used to indicate force value;
Described gauge stand (1) is connected with gauge outfit, and gauge stand is provided with cavity in (1), is provided with primary diaphragm (3) in cavity; Primary diaphragm (3) coordinates with cavity to be formed steps on the liquid storage cylinder (2) of pressure elements pipe (51) conducting for encapsulating manometric liquid with boolean; Primary diaphragm (3) is provided with secondary diaphragm (4) away from the side of liquid storage cylinder (2), is reserved with gap and forms the compensation space supplying secondary diaphragm (4) predeformation between secondary diaphragm (4) and primary diaphragm (3).
2. high precision temperature compensation type pressure transducer according to claim 1, is characterized in that, primary diaphragm (3) adopts convoluted diaphragm.
3. high precision temperature compensation type pressure transducer according to claim 1, is characterized in that, secondary diaphragm (4) adopts convoluted diaphragm.
4. high precision temperature compensation type pressure transducer according to claim 1, it is characterized in that, primary diaphragm (3) adopts convoluted diaphragm, secondary diaphragm (4) adopts convoluted diaphragm, and the wave groove/ripple peak of primary diaphragm (3) and the wave groove/ripple peak of secondary diaphragm (4) are corresponding in turn in order.
5. the high precision temperature compensation type pressure transducer according to any one of claim 1-4, is characterized in that, the shape of connecting rod (52) is Ω shape.
6. the high precision temperature compensation type pressure transducer according to any one of claim 1-5, is characterized in that, shell (6) comprises watchcase and cover circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875596.4A CN105547566A (en) | 2015-11-30 | 2015-11-30 | High-precision temperature compensation pressure sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875596.4A CN105547566A (en) | 2015-11-30 | 2015-11-30 | High-precision temperature compensation pressure sensor |
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| Publication Number | Publication Date |
|---|---|
| CN105547566A true CN105547566A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510875596.4A Pending CN105547566A (en) | 2015-11-30 | 2015-11-30 | High-precision temperature compensation pressure sensor |
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| CN (1) | CN105547566A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768612A (en) * | 2017-03-16 | 2017-05-31 | 慈溪欧卡特仪表科技有限公司 | A kind of linear graduation shows the pressure vacuum meter of different ranges |
| CN110553785A (en) * | 2019-09-19 | 2019-12-10 | 嘉兴学院 | High-precision temperature compensation type pressure sensor |
| CN110926681A (en) * | 2019-11-07 | 2020-03-27 | 贵州电网有限责任公司 | Gas pressure detector |
| CN112880433A (en) * | 2021-01-21 | 2021-06-01 | 重庆帅豪机械有限公司 | Air cooler and process fluid pressure loss remote monitoring method thereof |
| CN117571194A (en) * | 2024-01-16 | 2024-02-20 | 山东中煤电器有限公司 | Sensing equipment for testing fluid pressure in pipeline |
Citations (5)
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| CN101149303A (en) * | 2006-09-20 | 2008-03-26 | 台湾双叶工业股份有限公司 | Pressure meter non-contact type inductor |
| CN202382898U (en) * | 2011-11-25 | 2012-08-15 | 郑鸿业 | Pressure gage |
| CN103712733A (en) * | 2012-09-28 | 2014-04-09 | 罗斯蒙德公司 | Remote seal process pressure measuring system |
| CN204630687U (en) * | 2015-06-11 | 2015-09-09 | 慈溪市华东压力表有限公司 | A kind of tensimeter |
| CN105092135A (en) * | 2015-05-11 | 2015-11-25 | 上海为民仪表厂 | Pressure gauge for mine |
-
2015
- 2015-11-30 CN CN201510875596.4A patent/CN105547566A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149303A (en) * | 2006-09-20 | 2008-03-26 | 台湾双叶工业股份有限公司 | Pressure meter non-contact type inductor |
| CN202382898U (en) * | 2011-11-25 | 2012-08-15 | 郑鸿业 | Pressure gage |
| CN103712733A (en) * | 2012-09-28 | 2014-04-09 | 罗斯蒙德公司 | Remote seal process pressure measuring system |
| CN105092135A (en) * | 2015-05-11 | 2015-11-25 | 上海为民仪表厂 | Pressure gauge for mine |
| CN204630687U (en) * | 2015-06-11 | 2015-09-09 | 慈溪市华东压力表有限公司 | A kind of tensimeter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768612A (en) * | 2017-03-16 | 2017-05-31 | 慈溪欧卡特仪表科技有限公司 | A kind of linear graduation shows the pressure vacuum meter of different ranges |
| CN110553785A (en) * | 2019-09-19 | 2019-12-10 | 嘉兴学院 | High-precision temperature compensation type pressure sensor |
| CN110553785B (en) * | 2019-09-19 | 2020-12-01 | 嘉兴学院 | High-precision temperature compensation type pressure sensor |
| CN110926681A (en) * | 2019-11-07 | 2020-03-27 | 贵州电网有限责任公司 | Gas pressure detector |
| CN110926681B (en) * | 2019-11-07 | 2021-08-24 | 贵州电网有限责任公司 | Gas pressure detector |
| CN112880433A (en) * | 2021-01-21 | 2021-06-01 | 重庆帅豪机械有限公司 | Air cooler and process fluid pressure loss remote monitoring method thereof |
| CN117571194A (en) * | 2024-01-16 | 2024-02-20 | 山东中煤电器有限公司 | Sensing equipment for testing fluid pressure in pipeline |
| CN117571194B (en) * | 2024-01-16 | 2024-03-22 | 山东中煤电器有限公司 | Sensing equipment for testing fluid pressure in pipeline |
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Application publication date: 20160504 |