CN2901271Y - Flange diaphragm sealed liquid level and pressure transmitter - Google Patents
Flange diaphragm sealed liquid level and pressure transmitter Download PDFInfo
- Publication number
- CN2901271Y CN2901271Y CN 200620118683 CN200620118683U CN2901271Y CN 2901271 Y CN2901271 Y CN 2901271Y CN 200620118683 CN200620118683 CN 200620118683 CN 200620118683 U CN200620118683 U CN 200620118683U CN 2901271 Y CN2901271 Y CN 2901271Y
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- flange
- pressure
- ripple
- diaphragm
- liquid level
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Abstract
A flange aperture sealing fluid level pressure transformer is used in industry to automatically remotely measuring liquid presusre and pressure differential signlas, with remote measurment. The utility model is composed of a measuring bellow provided with a pressure difference transmitter, a capillary, a coupling bar, a connecting pipe, a waviness flange and a segregate diaphragm, characterized in that one or two ends of the measuring bellow are connected with a telemeter connecting cap, a measuring diaphragm is provided between the telemeter connecting cap and the pressure difference transmitter; one end of the capillary is connected with a telemeter connecting cap and the other end is connected with the side of the waviness flange via the connecting pipe and the connecting bar, an end-face of the waviness flange is equipped with a segregate diaphragm, the capillary contains stuffl liquid. The utility model not only achieves the test of the telemeter pressure and pressure difference, but also can amend the static pressure and temperature, thereby improving the accuracy of transmitted liquid signal tested and the stability.
Description
Technical field
The utility model relates to a kind of industrial automation instrument, particularly a kind of energy telemeasurement fluid pressure, pressure difference signal, the flange transmitter of realization telemeasurement.More particularly, relate to a kind of working joint that is used for pressure unit is connected to the detection position.
Background technology
The industrial automation control transmitter that uses transmits the tracer liquid operating variable, as pressure, temperature, flow etc.Be used to monitor, the operation of CONTROL PROCESS process.
At present, external liquid level and pressure unit factory adopt different detecting elements, as technology such as silicon capacitance, sensistor formula, silicon resonance types, realize measurement of liquid level and pressure signal and teletransmission.Domestic liquid level and pressure unit development status, introduced the manufacturing technology of FC series condenser type analog transmitter the end of the eighties, the beginning of the nineties, finished the exploitation of FC Φ 96 diaphragm flange teletransmission transmitters, in design and manufacture view certain technological accumulation has been arranged.2003, possessed pressure reduction, pressure, the design of three kinds of flow, manufacturing ability.
Chinese patent, notification number is 2559970 patent, and a kind of electronic level meter technical scheme is provided.Comprise with the band housing that joins of pressure vessel and install differential pressure pick-up or transmitter on it, it is characterized in that: the pressure compensator utilization in the assemble case is taken over and is joined with differential pressure pick-up or transmitter one pressure measurement end respectively and communicate with the bottom of band pressure vessel by kapillary, place the inductor of band pressure vessel bottom to utilize the adapter in the housing and join by kapillary and differential pressure pick-up or another pressure measurement end of transmitter, the end of inductor and pressure compensator is provided with pressure-sensitive diaphragm respectively, the cavity of inductor and the interior encapsulation of the kapillary pilot medium that is communicated with it.This electronic level meter is the liquid level gauge that utilizes the pressure reduction principle design, and the little installation of volume is simple; Container internal pressure compensates by bias pressure, can improve measuring accuracy.
Summary of the invention
The purpose of this utility model provides a kind of flange diaphragm seal liquid level and pressure unit, can not only realize the requirement of teletransmission pressure, differential pressure measurement, and can realize that detection, transmit fluid signal accuracy height, stability are reliable by static pressure and temperature being carried out revisal.
The technical solution adopted in the utility model is: flange diaphragm seal liquid level and pressure unit, form by measuring bellows, kapillary, connecting link, connecting pipe, ripple flange and isolation diaphragm, measure in the bellows pressure differential pressure sensor is arranged, be characterised in that: measure the bellows one or both ends and be connected with the teletransmission connection cover, between teletransmission connection cover and the pressure differential pressure sensor measuring diaphragm is arranged.An end capillaceous connects the teletransmission connection cover, and the other end is connected with the ripple flange side by connecting link, connecting pipe.End face of ripple flange has isolation diaphragm, and the filling liquid that charges in fluid to be measured and the kapillary is kept apart.Filling liquid is arranged in the kapillary.Like this, be full of filling liquid in measuring diaphragm, kapillary and the isolation diaphragm, the variation of fluid to be measured pressure is delivered to the pressure differential pressure sensor by filling liquid.If exert pressure this moment on the end face isolation diaphragm of ripple flange, then this pressure can pass to the pressure differential pressure sensor exactly by isolation diaphragm and filling liquid.
Described isolation diaphragm diameter is between the 40-100 millimeter, and thickness is between the 0.04-0.1 millimeter.Capillaceous and connecting pipe welds, connecting pipe and the connecting link welding with micro deep-hole, connecting link and the welding of ripple flange side.The ripple flange side is porose, can and ripple flange and isolation diaphragm between the space connect, form barrier film, capillary seal transmission system.
Described ripple flange can be a plane face flange, also can be the plug-in type flange.
Described ripple flange and isolation diaphragm are connected into by accurate plasma welding.The welding back is not more than 1 * 10-4Paml/s in the following leakage rate of vacuum tightness 10-5Torr, can bear the pressure of 40Mpa.Bevel for welding 0.3-0.5 * 45 °.
It is airtight circular that the ripple of described ripple flange is, and is made of ripple depth of section 0.2-0.3 millimeter 5-14 annular ripple.
After isolation diaphragm and ripple flange have welded, need carry out the moulding of ripple, the height consistance of diaphragm and ripple flange bellows-shaped.
The beneficial effects of the utility model: flange diaphragm seal liquid level and pressure unit, not only realized the requirement of teletransmission pressure, differential pressure measurement, and can be by static pressure and temperature are carried out revisal, detection, transmit fluid signal accuracy height, stability are reliable.
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
Fig. 1 is the utility model flange diaphragm seal liquid level and pressure unit structural profile synoptic diagram.It is the structural representation of embodiment 1.
Fig. 2 is the utility model ripple flange structural profile synoptic diagram.
Among the figure, 1. measuring diaphragm, 2. teletransmission connection cover, 3. pressure differential pressure sensor, 4. antioverloading diaphragm, 5. ripple flange, 6. isolation diaphragm, 7. kapillary, 8. connecting pipe, 9. connecting link.
Embodiment
Embodiment 1: consult accompanying drawing 1.The utility model method flange diaphragm seal liquid level and pressure unit, measuring in the bellows has pressure differential pressure transmitter (3).Measure the bellows two ends and be connected with a teletransmission connection cover (2) respectively, between teletransmission connection cover (2) and the pressure differential pressure sensor (3) measuring diaphragm (1) is arranged.One end of kapillary (7) connects teletransmission connection cover (2), kapillary (7) other end and connecting pipe (8) welding, connecting pipe (8) and connecting link (9) welding with micro deep-hole, connecting link (9) and the welding of ripple flange (5) side.The specification of kapillary (7) is 3 * 0.6 millimeters of φ.(5) end faces of ripple flange are welded with isolation diaphragm (6).Ripple flange (5) and isolation diaphragm (6) are connected into by accurate plasma welding.The welding back is not more than 1 * 10-4Paml/s in the following leakage rate of vacuum tightness 10-5Torr, can bear the pressure of 40Mpa.0.5 * 45 ° of bevel for welding.Isolation diaphragm (6) diameter is 48 millimeters, and thickness is 0.04 millimeter.Ripple flange (5) side is porose, can and ripple flange (5) and isolation diaphragm (6) between the space connect, ripple flange (5) is a plane face flange.It is airtight circular that the ripple of ripple flange (5) is, and is made of 0.25 millimeter of ripple depth of section 14 annular ripples.Isolation diaphragm (6) carries out the moulding of ripple after having welded with ripple flange (5), the height consistance of the bellows-shaped of isolation diaphragm (6) and ripple flange (5).Kapillary is filled with silicone oil in (7); Silicone oil also is full of the space between ripple flange (5) and the isolation diaphragm (6); Also be full of space between teletransmission connection cover (2) and the measuring diaphragm (1) and the space in ripple flange (5) hole.
Flange diaphragm seal liquid level and pressure unit are on intelligent pressure differential pressure transmitter (3) basis, and by barrier film flange impulse, the kapillary (7) that is full of silicone oil transmits pressure, solves under the special process condition, and pressure, differential pressure signal are measured at a distance.Acted on the isolation diaphragm (6) of ripple flange (5) assembly by measuring pressure or differential pressure signal, be delivered to the measurement bellows along silicone oil again.Acted on the silicon pressure sensor by measuring pressure, the measuring diaphragm (1) and the silicone oil of differential pressure signal in measuring bellows, 4 piezoelectricity arm resistance resistances in the measurement bellows on the measuring diaphragm (1) change, output voltage is directly proportional with pressure or differential pressure, thereby realizes that pressure, differential pressure signal measure at a distance.
Embodiment 2: consult accompanying drawing 1.Substantially the same manner as Example 1, difference is: isolation diaphragm (6) diameter is 73 millimeters, and thickness is 0.06 millimeter.The specification of kapillary (7) is 3 * 1 millimeters of φ.Pressure differential pressure sensor (3) adopts the silicon pressure sensor.What ripple flange (5) adopted is the plug-in type flange.Antioverloading diaphragm (4) is arranged on pressure differential pressure transmitter (3).
Embodiment 3: consult accompanying drawing 1.Isolation diaphragm (6) diameter is 96 millimeters, and thickness is 0.08 millimeter.The specification of kapillary (7) is 3 * 1 millimeters of φ.
Claims (10)
1, a kind of flange diaphragm seal liquid level and pressure unit, by measuring bellows, kapillary (7), connecting link (9), connecting pipe (8), ripple flange (5) and isolation diaphragm (6) are formed, measure in the bellows pressure differential pressure sensor (3) is arranged, be characterised in that: measure the bellows one or both ends and be connected with teletransmission connection cover (2), between teletransmission connection cover (2) and the pressure differential pressure sensor (3) measuring diaphragm (1) is arranged, one end of kapillary (7) connects teletransmission connection cover (2), kapillary (7) other end is by connecting pipe (8), connecting link (9) is connected with ripple flange (5) side, (5) end faces of ripple flange have isolation diaphragm (6), and kapillary has filling liquid in (7).
2, flange diaphragm seal liquid level according to claim 1 and pressure unit, it is characterized in that: described isolation diaphragm (6) diameter is between the 40-100 millimeter, thickness is between the 0.04-0.1 millimeter, kapillary (7) and connecting pipe (8) welding, connecting pipe (8) and connecting link (9) welding with micro deep-hole, connecting link (9) and the welding of ripple flange (5) side, ripple flange (5) side is porose, can and ripple flange (5) and isolation diaphragm (6) between the space connect, form barrier film capillary seal transmission system.
3, flange diaphragm seal liquid level according to claim 1 and pressure unit is characterized in that: described ripple flange (5) is a plane face flange.
4, flange diaphragm seal liquid level according to claim 1 and pressure unit is characterized in that: described ripple flange (5) is the plug-in type flange.
5, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: described ripple flange (5) and isolation diaphragm (6) are connected into by accurate plasma welding, the welding back is not more than 1 * 10-4Paml/s in the following leakage rate of vacuum tightness 10-5Torr, can bear the pressure of 40Mpa, bevel for welding 0.3-0.5 * 45 °.
6, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: the ripple of described ripple flange (5) is airtight circular, is made of ripple depth of section 0.2-0.3 millimeter 5-14 annular ripple.
7, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: after isolation diaphragm (6) has welded with ripple flange (5), carry out the moulding of ripple, the height consistance of the bellows-shaped of isolation diaphragm (6) and ripple flange (5).
8, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: antioverloading diaphragm (4) is arranged on pressure differential pressure transmitter (3).
9, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: the specification of kapillary (7) is 3 * 1 millimeters of φ.
10, according to claim 1 or 2 or 3 or 4 described flange diaphragm seal liquid level and pressure units, it is characterized in that: the specification of kapillary (7) is 3 * 0.6 millimeters of φ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118683 CN2901271Y (en) | 2006-06-14 | 2006-06-14 | Flange diaphragm sealed liquid level and pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118683 CN2901271Y (en) | 2006-06-14 | 2006-06-14 | Flange diaphragm sealed liquid level and pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901271Y true CN2901271Y (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620118683 Expired - Lifetime CN2901271Y (en) | 2006-06-14 | 2006-06-14 | Flange diaphragm sealed liquid level and pressure transmitter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713786A (en) * | 2008-09-29 | 2010-05-26 | 通用电气公司 | Accelerometer including diaphragm and power generator and motor including same |
| CN101813504A (en) * | 2010-04-26 | 2010-08-25 | 长沙华时捷环保科技发展有限公司 | Pneumatic control type accurate measuring device |
| CN103575450A (en) * | 2013-11-22 | 2014-02-12 | 邢台旭阳煤化工有限公司 | Diaphragm sealing device for measuring liquid pressure, mechanical finger pressure gauge and pressure transmitter |
| CN105699000A (en) * | 2014-11-28 | 2016-06-22 | 重庆四联测控技术有限公司 | Manufacturing method for asymmetric ripple pressure transmission assembly |
| CN106404281A (en) * | 2016-11-24 | 2017-02-15 | 南京科技职业学院 | Simple high-precision pressure transmitter verification device and implementation method thereof |
| CN108613714A (en) * | 2018-05-04 | 2018-10-02 | 吉林大学 | A kind of stainless steel tube coal level measurement device |
| CN109632180A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Isolating device for superhigh temperature pressure transmitter |
| CN109655192A (en) * | 2018-12-11 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of teletransmission diaphragm pressure transmitter |
-
2006
- 2006-06-14 CN CN 200620118683 patent/CN2901271Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713786A (en) * | 2008-09-29 | 2010-05-26 | 通用电气公司 | Accelerometer including diaphragm and power generator and motor including same |
| CN101813504A (en) * | 2010-04-26 | 2010-08-25 | 长沙华时捷环保科技发展有限公司 | Pneumatic control type accurate measuring device |
| CN103575450A (en) * | 2013-11-22 | 2014-02-12 | 邢台旭阳煤化工有限公司 | Diaphragm sealing device for measuring liquid pressure, mechanical finger pressure gauge and pressure transmitter |
| CN103575450B (en) * | 2013-11-22 | 2016-02-03 | 邢台旭阳煤化工有限公司 | Liquid pressure measurement diaphragm closure means, mechanical indicating pointer tensimeter and pressure unit |
| CN105699000A (en) * | 2014-11-28 | 2016-06-22 | 重庆四联测控技术有限公司 | Manufacturing method for asymmetric ripple pressure transmission assembly |
| CN106404281A (en) * | 2016-11-24 | 2017-02-15 | 南京科技职业学院 | Simple high-precision pressure transmitter verification device and implementation method thereof |
| CN108613714A (en) * | 2018-05-04 | 2018-10-02 | 吉林大学 | A kind of stainless steel tube coal level measurement device |
| CN109655192A (en) * | 2018-12-11 | 2019-04-19 | 安徽天康(集团)股份有限公司 | A kind of teletransmission diaphragm pressure transmitter |
| CN109632180A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Isolating device for superhigh temperature pressure transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070516 |
|
| EXPY | Termination of patent right or utility model |