CN2802486Y - High-temp anti-corrosion flat-die micro-pressure transmitter - Google Patents
High-temp anti-corrosion flat-die micro-pressure transmitter Download PDFInfo
- Publication number
- CN2802486Y CN2802486Y CN 200520078941 CN200520078941U CN2802486Y CN 2802486 Y CN2802486 Y CN 2802486Y CN 200520078941 CN200520078941 CN 200520078941 CN 200520078941 U CN200520078941 U CN 200520078941U CN 2802486 Y CN2802486 Y CN 2802486Y
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- Prior art keywords
- pressure transmitter
- flat
- transmitter
- capacitive sensor
- ceramic
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- 238000005260 corrosion Methods 0.000 title abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000005056 compaction Methods 0.000 claims description 14
- 230000003628 erosive effect Effects 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229920001973 fluoroelastomer Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a high-temperature anti-corrosion flat-die micro-pressure transmitter, which comprises a ceramic capacitance sensor which is arranged on the front end of the high-temperature anti-corrosion flat-die micro-pressure transmitter, a socket which is arranged on the back end of the high-temperature anti-corrosion flat-die micro-pressure transmitter and connected with an extension instrument, a casing, and a circuit board which is arranged in the casing, wherein the front end of the casing is provided with an interface of internal threads; the interface of internal threads is connected with a metal clamping ring; the outer wall of the metal clamping ring is connected with a casing pipe; the front end of the casing pipe is sealed and pressed with an O-shaped sealing ring; the ceramic capacitance sensor is sealed and arranged between the O-shaped sealing ring and the metal clamping ring; a ceramic diaphragm of the ceramic capacitance sensor is directly connected with the end surface of the O-shaped sealing ring; the inner wall of the metal clamping ring is covered with the outer wall of the ceramic capacitance sensor; the middle part of the casing is provided with radiating fins. The utility model has the advantages of small size and convenient installation and operation, and can accurately and reliably measure micro-pressure corrosive media and high-temperature mucosity media. The cost performance of the high-temperature anti-corrosion flat-die micro-pressure transmitter can be largely enhanced. The utility model can be used for the occasion of the automatic pressure detection and control of the field of food, pharmacy, petroleum and chemical industry.
Description
Technical field the utility model relates to a kind of pressure unit, a kind of specifically just being applied in industrial process detection and the control system, high temperature, corrosivity, thickness, minute-pressure medium are detected, and the pressure signal that records is amplified, compensates, converts to the high-temperature anticorrosion erosion flat-die type minute-pressure transmitter of the electric signal of standard.
Background technology is along with industrial expansion, energy-conservation of consumption reduction, enhance productivity, reduce production costs, improving the quality of products is each enterprise's emphasis, the extensive application of pressure transducer makes technological transformation be achieved, but to be higher than 85 ℃ high-temperature medium, Korrosionsmedium, toughness medium, less than the rugged surroundings that the minute-pressure medium below the 5Kpa is integrated in one, existing most pressure transducers are powerless.Existing pressure is learned the existing low precision of measurement existence that transmitter is used for above-mentioned medium, and temperature is floated greatly, the defective of stability and poor reliability.
Utility model content the purpose of this utility model is to address the above problem, and a kind of high-temperature anticorrosion erosion flat-die type minute-pressure transmitter that detects minute-pressure, high temperature, corrosivity, toughness medium is provided.
In order to realize described purpose, the technical solution adopted in the utility model is: a kind of high-temperature anticorrosion erosion flat-die type minute-pressure transmitter, the socket that joins with extension instrument that comprises that ceramic capacitive sensor, rear end that the transmitter front end is installed install, the wiring board that is provided with in the housing, housing; It is characterized in that: the housing front end is established internal thread interface, internal thread interface connects the metal compaction ring, metal compaction ring outer wall connects sleeve pipe, sleeve pipe front end envelope is pressed " O " RunddichtringO, be sealed and installed with ceramic capacitive sensor between " O " RunddichtringO and the metal compaction ring, the ceramic diaphragm of ceramic capacitive sensor directly is connected with " O " RunddichtringO end face, and metal compaction ring inwall is with the obvolvent of ceramic capacitive sensor outer wall, and heat radiator is established at the housing middle part.
The utility model is with the pressure unit of ceramic capacitive sensor as force sensing element.In shell, the ceramic capacitive sensor sealing is installed in this variator front end by metal compaction ring and " O " RunddichtringO, ceramic capacitive sensor reduces the amplification module and the voltage/current modular converter that are input to wiring board on through heat radiator to medium temperature as the output electric signal that the force sensing element of detected pressures medium will be directly proportional with pressure, and the temperature that high temperature produces is floated the two-wire system current signal that error effectively compensates back output industrial standard.The ceramic diaphragm of ceramic capacitive sensor directly is connected with " O " shape O-ring seal end face, that is to say that ceramic capacitive sensor does not have any filling liquid, ceramic capacitive sensor will act on the pressure of its membrane surface, the electric capacitance change ratio of electrode and membrance electrode by substrate, make diaphragm produce 0.03 millimeter change in displacement, the changes in capacitance value is through the laser correction.During overload, diaphragm is attached to and is protected on the ceramic substrate and can not damages.Ceramic capacitive sensor combines corrosion resistivity, high resiliency, anti shock and vibration and the heat-staple characteristic of pottery and the high sensitivity of capacitance structure sensor dexterously, so that transmitter has good non-linear, sluggish, repeatability and high reliability.It can measure the slight pressure less than 5Kpa, and anti-overload ability reaches 200 times, and big circular membrane surface is smooth can directly to be contacted with tested viscous medium.Its important technological parameters is as follows:
Range: ± 1KPa～7MPa gauge pressure, absolute pressure
Precision: 0.1%, 0.2%, 0.3%
Voltage: 12V～36V DC
Output: 4～20mA two-wire system
Working temperature :-40～+ 125 ℃
Temperature drift: (temperature compensation scope :-20～+ 80 ℃) ± 0.01%FS/ ℃
Thereby the utility model volume is small and exquisite, and is easy to install, can accurate and reliable micrometer press Korrosionsmedium, high temperature toughness medium; The utility model can bigger raising minute-pressure transmitter the ratio of performance to price, can be used for food, pharmacy, oil, chemical field to the automatic Detection ﹠ Controling occasion of pressure.
Description of drawings Fig. 1 is a sectional structure chart of the present utility model,
Fig. 2 is circuit theory diagrams of the present utility model.
Among the figure: 1-lead-in wire aviation socket, 2-stainless steel (1Cr18Ni9Ti) housing, 3-wiring board, 4-metal fin, 5-installation, six sides, 6-metal compaction ring, 7-ceramic capacitive sensor, 701-ceramic diaphragm, 702-sensor lead, 8-fluororubber " O " RunddichtringO, 9-sleeve pipe, IC
1-signal amplifying function module, IC
2-two-wire system becomes send functional module.
Embodiment
As shown in Figure 1: a kind of high-temperature anticorrosion erosion flat-die type minute-pressure transmitter, the lead-in wire aviation socket 1 that joins with extension instrument that comprises that ceramic capacitive sensor 7, rear end that the transmitter front end is installed install, Stainless Steel Shell 2, the wiring boards 3 that are provided with in the Stainless Steel Shell 2; Stainless Steel Shell 2 front ends are established and six sides 5 are installed as internal thread interface, internal thread interface connects metal compaction ring 6, metal compaction ring 6 outer walls connect sleeve pipe 9, sleeve pipe 9 front ends envelope is pressed fluororubber " O " RunddichtringO 8, be sealed and installed with ceramic capacitive sensor 7 between fluororubber " O " RunddichtringO 8 and the metal compaction ring 6, the ceramic diaphragm 701 of ceramic capacitive sensor 7 directly is connected with fluororubber " O " RunddichtringO 8 end faces, metal compaction ring 6 inwalls are with ceramic capacitive sensor 7 outer wall obvolvents, and metal fin 4 is established at Stainless Steel Shell 2 middle parts.Sensor lead 702 joins with wiring board 3.Selecting diameter for use is the ceramic capacitive sensor 7 of 32 millimeters of Ф 18～Ф, and ceramic capacitive sensor 7 converts pressure medium the electric signal of linear change to, and is suitable for viscous medium, reaches anti-blocking, easy cleaning, purpose that measuring accuracy is high.
Referring to Fig. 2: establish extensive special signal modulate circuit on the Transmitter Line plate 3, this modulate circuit adopts signal amplifying function module I C
1Functional module IC is sent in change with two-wire system
2, signal amplifying function module I C
1Select model OP2277 for use, two-wire system becomes send functional module IC
2Select model XTR106 for use, signal amplifying function module I C
1 Signal input part 3 pin, 5 pin and sensor lead 702 output terminals join; Two-wire system becomes send functional module IC
2Input end and IC
17 pin connect, and output terminal 10 pin are as the positive power source terminal of transmitter, and output terminal 7 pin are as the signal output part of transmitter.
Claims (7)
1, a kind of high-temperature anticorrosion erosion flat-die type minute-pressure transmitter, the socket that joins with extension instrument that comprises that ceramic capacitive sensor, rear end that the transmitter front end is installed install, the wiring board that is provided with in the housing, housing; It is characterized in that: described housing (2) front end is established internal thread interface, described internal thread interface connects metal compaction ring (6), described metal compaction ring (6) outer wall connects sleeve pipe (9), described sleeve pipe (9) front end envelope is pressed " O " RunddichtringO (8), be sealed and installed with ceramic capacitive sensor (7) between described " O " shape O-ring seal (8) and the described metal compaction ring (6), the ceramic diaphragm (701) of described ceramic capacitive sensor (7) directly is connected with described " O " shape O-ring seal (8) end face, described metal compaction ring (6) inwall is with described ceramic capacitive sensor (7) outer wall obvolvent, and heat radiator (4) is established at described housing (2) middle part.
2, high-temperature anticorrosion erosion flat-die type minute-pressure transmitter as claimed in claim 1, it is characterized in that: establish extensive special signal modulate circuit on the described wiring board (3), this modulate circuit adopts signal amplifying function module (IC
1) and two-wire system become and to send functional module (IC
2), described signal amplifying function module (IC
1) signal input part 3 pin, 5 pin and sensor lead (702) output terminal join; Described two-wire system becomes send functional module (IC
2) input end and (IC
1) connection of 7 pin, output terminal 10 pin are as the positive power source terminal of transmitter, and output terminal 7 pin are as the signal output part of transmitter.
3, high-temperature anticorrosion erosion flat-die type minute-pressure transmitter as claimed in claim 1, it is characterized in that: described housing (2) is a Stainless Steel Shell.
4, high-temperature anticorrosion erosion flat-die type minute-pressure transmitter as claimed in claim 1, it is characterized in that: described " O " RunddichtringO (8) is fluororubber " O " O-ring seal.
5, high-temperature anticorrosion erosion flat-die type minute-pressure transmitter as claimed in claim 1, it is characterized in that: described heat radiator (4) is a metal fin.
6, as any described high-temperature anticorrosion erosion flat-die type minute-pressure transmitter of claim 1 to 5, it is characterized in that: described socket 1 military aviation socket.
7, high-temperature anticorrosion erosion flat-die type minute-pressure transmitter as claimed in claim 6, it is characterized in that: described ceramic capacitive sensor (7) diameter is 32 millimeters of Ф 18～Ф.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078941 CN2802486Y (en) | 2005-06-17 | 2005-06-17 | High-temp anti-corrosion flat-die micro-pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078941 CN2802486Y (en) | 2005-06-17 | 2005-06-17 | High-temp anti-corrosion flat-die micro-pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802486Y true CN2802486Y (en) | 2006-08-02 |
Family
ID=36847194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078941 Expired - Fee Related CN2802486Y (en) | 2005-06-17 | 2005-06-17 | High-temp anti-corrosion flat-die micro-pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802486Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384808A (en) * | 2011-11-03 | 2012-03-21 | 浙江庆源车业部件有限公司 | Pressure transmitting sensor |
| CN102914401A (en) * | 2011-08-01 | 2013-02-06 | 霍尼韦尔国际公司 | Pressure sensor assembly |
| CN103674407A (en) * | 2012-09-17 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel pressure transmitter |
| WO2016015907A1 (en) * | 2014-07-28 | 2016-02-04 | Endress+Hauser Gmbh+Co. Kg | Diaphragm seal and pressure sensor having a diaphragm seal |
| CN109253831A (en) * | 2018-10-10 | 2019-01-22 | 南京佳业检测工程有限公司 | A kind of industrial combustion furnace pressure-detecting device |
-
2005
- 2005-06-17 CN CN 200520078941 patent/CN2802486Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914401A (en) * | 2011-08-01 | 2013-02-06 | 霍尼韦尔国际公司 | Pressure sensor assembly |
| CN102914401B (en) * | 2011-08-01 | 2016-06-15 | 霍尼韦尔国际公司 | Pressure sensor assembly |
| CN102384808A (en) * | 2011-11-03 | 2012-03-21 | 浙江庆源车业部件有限公司 | Pressure transmitting sensor |
| CN102384808B (en) * | 2011-11-03 | 2015-10-07 | 浙江庆源车业部件有限公司 | A kind of pressure transmitting sensor |
| CN103674407A (en) * | 2012-09-17 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel pressure transmitter |
| WO2016015907A1 (en) * | 2014-07-28 | 2016-02-04 | Endress+Hauser Gmbh+Co. Kg | Diaphragm seal and pressure sensor having a diaphragm seal |
| US10281352B2 (en) | 2014-07-28 | 2019-05-07 | Endress+Hauser Se+Co.Kg | Diaphragm seal and pressure sensor having a diaphragm seal |
| CN109253831A (en) * | 2018-10-10 | 2019-01-22 | 南京佳业检测工程有限公司 | A kind of industrial combustion furnace pressure-detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANSHUI HUATIAN SENSOR CO., LTD. Free format text: FORMER OWNER: HUATIAN MICRO-ELECTRONIC CO., LTD., TIANSHUI Effective date: 20110712 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110712 Address after: 741000 Gansu province Tianshui District Shuangqiao Road No. 14 Patentee after: Tianshui Huatian Sensor Co., Ltd. Address before: 741000 Gansu province Tianshui District Shuangqiao Road No. 14 Patentee before: Huatian Micro-electronic Co., Ltd., Tianshui |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 Termination date: 20130617 |