CN108871483A - A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing method - Google Patents
A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing method Download PDFInfo
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- CN108871483A CN108871483A CN201810771454.7A CN201810771454A CN108871483A CN 108871483 A CN108871483 A CN 108871483A CN 201810771454 A CN201810771454 A CN 201810771454A CN 108871483 A CN108871483 A CN 108871483A
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- Prior art keywords
- pressure
- corrosion
- fuel gas
- sensor
- frame
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/04—Compensating or correcting for variations in pressure, density or temperature of gases to be measured
- G01F15/043—Compensating or correcting for variations in pressure, density or temperature of gases to be measured using electrical means
Abstract
The present invention relates to a kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing methods, sensor uses small-sized integrated SMD structure, including frame, cylindrical case, signal condition chip, pressure sensor and platinum resistance temperature sensor, the cylindrical case is arranged on frame, the signal condition chip, pressure sensor and platinum resistance temperature sensor are bonded on frame, and it is encapsulated in cylindrical case by casting glue, the signal condition chip, pressure sensor and platinum resistance temperature sensor are electrically connected by bonding line, the casting glue is fluoride gel.After the completion of the corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer compensation for calibrating errors, a digital pressure signal output is provided, the output of platinum resistance signal temperature is met《Detecting gas meter regulation》It about gas meter, flow meter using temperature and pressure compensated index request, solves the demand for using the product by the user miniaturization, is reserved for user and carry out innovation upgrading with more spaces.
Description
Technical field
The present invention relates to gas meter, flow meter temperature and pressure compensation technical field more particularly to a kind of corrosion-resistant fuel gas table temperature and pressure compensation one
Change sensor and its manufacturing method.
Background technique
Gas meter, flow meter is used for gas metering charging, and when calculating is calculated with marking condition condition, and in addition to laboratory, actual condition is very
The rare use condition for meeting mark condition, according to the equation of gas state, gas dosing is influenced very big by environment temperature and pressure, is
The accuracy for guaranteeing gas metering, needs to measure the temperature and pressure value of natural gas in natural-gas transfer pipeline, passes through temperature
Actual condition is converted into standard condition by pressure compensation, realizes the amendment to gas meter, flow meter metering numerical value.
Platinum resistance temperature is respectively adopted one is adopting a split structure in mode that there are two types of existing gas meter, flow meter temperature and pressure compensations
Sensor measures temperature and the oil-filled isolation membrane pressure sensor of use measure pressure, carry out temperature and pressure compensation, such structural disadvantages are
Volume is big, take up space and structure is complicated；Another is the sensor using temperature and pressure one, and temperature sensor is using partly leading
Body PN junction thermometric, and protected using Silica hydrogel encapsulating, semiconductor PN temperature measurement accuracy is not high, is unable to satisfy《Detecting gas meter rule
Journey》Temperature index requirement；There is organic solvent and sulfide in natural gas line, Silica hydrogel is also unable to satisfy anticorrosion
Requirement.
Summary of the invention
The purpose of the present invention is to provide a kind of miniaturization, using the corrosion-resistant fuel gas table temperature and pressure compensation of SMD encapsulating structure
Integrated transducer and its manufacturing method.
The invention is realized in this way：A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer, using small-sized one
Change SMD structure, including frame, cylindrical case, signal condition chip, pressure sensor and platinum resistance temperature sensor, the cylinder
Shape shell is arranged on frame, and the signal condition chip, pressure sensor and platinum resistance temperature sensor are bonded on frame,
And be encapsulated in cylindrical case by casting glue, the signal condition chip, pressure sensor and platinum resistance temperature sensor pass through
The electrical connection of bonding line, the casting glue are fluoride gel.
Wherein, the precision grade of the platinum resistance temperature sensor is A grades.
Wherein, the frame is glass frame, metal framework or ceramic frame.
Wherein, the cylindrical case is metal shell or plastic shell.
Wherein, a height of 6.8mmX6.4mmX3.2mm of sensor outer dimension length and width.
Another technical solution provided by the invention is：The system of the corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer
Make method, including step：
（1）Signal condition chip, pressure sensor and platinum resistance temperature sensor are pasted on frame by bonded adhesives, gone forward side by side
Row solidification；
（2）Bonding wire connects signal condition chip, pressure sensor and platinum resistance temperature sensor realization electrically using bonding line
It connects；
（3）Cylindrical case is pasted on frame by bonded adhesives, and is solidified；
（4）Fluoride gel is perfused into cylindrical case, and is solidified；
（5）Age stability；
（6）Calibration；
（7）Test.
Wherein, in step（4）In, it specifically includes：Fluoride gel is perfused, is vacuumized, then carries out hot setting, most
After carry out aging.
Beneficial effects of the present invention are：The corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer is using small-sized integrated
SMD structure is all integrated in signal condition chip, pressure sensor and platinum resistance temperature sensor on frame, and passes through bonding
Line realizes electrical connection, wherein for pressure sensor for detecting pressure signal, it is defeated that mechanical pressure signal is converted to electric signal
Out, platinum resistance temperature sensor realizes high precision measuring temperature, signal condition chip is for acquiring and handling for detecting temperature signal
Pressure sensor and chip interior temperature sensor signal realize calibration and temperature-compensating to signal, complete Digital output,
Cylindrical case is used to form a pressure cavity, transfers the pressure on pressure sensor（Specially pressure sensor is pressure-sensitive
On chip）, using fluoride gel as casting glue, for realizing the protection to internal components, especially can satisfy to natural
Organic solvent and the corrosion resistant requirement of sulfide and waterproof requirement in feed channel.The corrosion-resistant fuel gas table temperature and pressure compensation integration
After the completion of pick up calibration compensation, a digital pressure signal output is provided, the output of platinum resistance signal temperature is met《Combustion gas
Table vertification regulation》About gas meter, flow meter using temperature and pressure compensated index request, solves and use the product by the user miniaturization
Demand reserves for user and carries out innovation upgrading with more spaces.Using small-sized integrated SMD structure, user's high-volume is solved
The problem of producing and using Reflow Soldering.
The manufacturing method of the corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer is given birth to by SOP production process for encapsulating
It produces, using bonded adhesives fixed signal conditioning chip, pressure sensor and platinum resistance temperature sensor, cylindrical case, passes through bonding
Line realizes electrical connection, realizes the protection to internal components using casting glue, realizes that the performance of sensor is steady by age stability
It is fixed, the calibration and temperature-compensating of pressure detecting are realized by calibration, are stablized cell pressure output, are met requirement, and
And use a kind of special encapsulating process for protecting, i.e., the protection to internal components is realized as casting glue using fluoride gel,
Meet product anticorrosion in application process and waterproof requirement.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer embodiment of the present invention；
Fig. 2 is the cross-sectional side view of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer embodiment of the present invention；
Fig. 3 is the top view of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer embodiment of the present invention.
1, frame；2, cylindrical case；3, signal condition chip；4, pressure sensor；5, platinum resistance temperature sensor；6, it fills
Sealing；7, bonding line.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer embodiment of the present invention, as shown in Figure 1 to Figure 3,
Using small-sized integrated SMD structure, including frame 1, cylindrical case 2, signal condition chip 3, pressure sensor 4 and platinum resistance temperature
Sensor 5 is spent, the cylindrical case 2 is arranged on frame 1, the signal condition chip 3, pressure sensor 4 and platinum resistance temperature
Degree sensor 5 is bonded on frame 1, and is encapsulated in cylindrical case 2 by casting glue 6, and the signal condition chip 3, pressure pass
Sensor 4 and platinum resistance temperature sensor 5 are electrically connected by bonding line 7, and the casting glue 6 is fluoride gel（Fluorine silicon is solidifying
Glue）.
The corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer uses small-sized integrated SMD structure, signal condition
Chip, 3 pressure sensors 4 and platinum resistance temperature sensor 5 are all integrated on frame 1, and are realized by bonding line 7 and electrically connected
It connects, wherein pressure sensor 4 is converted to electric signal output, platinum resistance temperature for detecting pressure signal, by mechanical pressure signal
Sensor 5 realizes high precision measuring temperature, signal condition chip 3 is for acquiring and processing pressure sensor 4 for detecting temperature signal
With the signal of chip interior temperature sensor, calibration and temperature-compensating to signal are realized, complete Digital output, cylindrical case
2 are used to form a pressure cavity, transfer the pressure on pressure sensor 4（The specially chip varistor of pressure sensor
On）, using fluoride gel as casting glue 6, for realizing the protection to internal components, especially can satisfy to natural gas tube
Organic solvent and the corrosion resistant requirement of sulfide and waterproof requirement in road.The corrosion-resistant fuel gas table temperature and pressure compensation integrated sensing
After the completion of device compensation for calibrating errors, a digital pressure signal output is provided, the output of platinum resistance signal temperature is met《Gas meter, flow meter inspection
Set pattern journey》About gas meter, flow meter using temperature and pressure compensated index request, solve the demand for using the product by the user miniaturization,
It is reserved for user and carries out innovation upgrading with more spaces.Using small-sized integrated SMD structure, solving user's mass production makes
The problem of with Reflow Soldering.
In the present embodiment, the precision grade of the platinum resistance temperature sensor 5 is A grades, and precision fully meets temperature benefit
The required precision repaid.
In the present embodiment, the frame 1 is glass frame, metal framework or ceramic frame.
In the present embodiment, the cylindrical case 2 is metal shell or plastic shell.
In the present embodiment, a height of 6.8mmX6.4mmX3.2mm of sensor outer dimension length and width, it is very small and exquisite.
The manufacturing method of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer of the present invention, including step：
（1）Signal condition chip 3, pressure sensor 4 and platinum resistance temperature sensor 5 are pasted on frame 1 by bonded adhesives,
And solidified；
（2）Bonding wire realizes signal condition chip 3, pressure sensor 4 and platinum resistance temperature sensor 5 electrically using bonding line 7
Connection；
（3）Cylindrical case 2 is pasted on frame 1 by bonded adhesives, and is solidified；
（4）Fluoride gel is perfused into cylindrical case 2, and is solidified；
（5）Age stability；
（6）Calibration；
（7）Test.
In the present embodiment, in step（4）In, it specifically includes：Fluoride gel is perfused, is vacuumized, then carries out high
Temperature solidification, finally carries out aging.
The manufacturing method of the corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer is given birth to by SOP production process for encapsulating
It produces, using bonded adhesives fixed signal conditioning chip 3, pressure sensor 4 and platinum resistance temperature sensor 5, cylindrical case 2, passes through
Bonding line 7 realizes electrical connection, realizes the protection to internal components using casting glue 6, realizes sensor by age stability
Performance is stablized, and the calibration and temperature-compensating of pressure detecting are realized by calibration, stablizes cell pressure output, meets use and wants
It asks, and uses a kind of special encapsulating process for protecting, i.e., realized as casting glue to internal components using fluoride gel
Protection meets product anticorrosion in application process and waterproof requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer, which is characterized in that small-sized integrated SMD structure is used,
Including frame, cylindrical case, signal condition chip, pressure sensor and platinum resistance temperature sensor, the cylindrical case setting
On frame, the signal condition chip, pressure sensor and platinum resistance temperature sensor are bonded on frame, and by casting glue
It is encapsulated in cylindrical case, the signal condition chip, pressure sensor and platinum resistance temperature sensor are electrical by bonding line
Connection, the casting glue are fluoride gel.
2. corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer according to claim 1, which is characterized in that the platinum electricity
The precision grade for hindering temperature sensor is A grades.
3. corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer according to claim 1, which is characterized in that the frame
For glass frame, metal framework or ceramic frame.
4. corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer according to claim 1, which is characterized in that the tubular
Shell is metal shell or plastic shell.
5. corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer according to claim 1, which is characterized in that the sensing
The a height of 6.8mmX6.4mmX3.2mm of device outer dimension length and width.
6. the manufacturing method of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer as described in claim 1, which is characterized in that packet
Include step：
（1）Signal condition chip, pressure sensor and platinum resistance temperature sensor are pasted on frame by bonded adhesives, gone forward side by side
Row solidification；
（2）Bonding wire connects signal condition chip, pressure sensor and platinum resistance temperature sensor realization electrically using bonding line
It connects；
（3）Cylindrical case is pasted on frame by bonded adhesives, and is solidified；
（4）Fluoride gel is perfused into cylindrical case, and is solidified；
（5）Age stability；
（6）Calibration；
（7）Test.
7. the manufacturing method of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer according to claim 6, which is characterized in that
In step（4）In, it specifically includes：Fluoride gel is perfused, is vacuumized, then carries out hot setting, it is old finally to carry out timeliness
Change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771454.7A CN108871483A (en) | 2018-07-13 | 2018-07-13 | A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771454.7A CN108871483A (en) | 2018-07-13 | 2018-07-13 | A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing method |
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| CN108871483A true CN108871483A (en) | 2018-11-23 |
Family
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| CN201810771454.7A Pending CN108871483A (en) | 2018-07-13 | 2018-07-13 | A kind of corrosion-resistant fuel gas table temperature and pressure compensation integrated transducer and its manufacturing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567511A (en) * | 2019-08-13 | 2019-12-13 | 浙江威星智能仪表股份有限公司 | Temperature and pressure detection device |
| CN111256856A (en) * | 2020-01-20 | 2020-06-09 | 合肥智感科技有限公司 | Waterproof dustproof intelligent cell-phone temperature pressure sensor |
| WO2022085497A1 (en) * | 2020-10-20 | 2022-04-28 | イーグル工業株式会社 | Pressure and temperature sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567511A (en) * | 2019-08-13 | 2019-12-13 | 浙江威星智能仪表股份有限公司 | Temperature and pressure detection device |
| CN111256856A (en) * | 2020-01-20 | 2020-06-09 | 合肥智感科技有限公司 | Waterproof dustproof intelligent cell-phone temperature pressure sensor |
| WO2022085497A1 (en) * | 2020-10-20 | 2022-04-28 | イーグル工業株式会社 | Pressure and temperature sensor |
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