CN115855359B - Diaphragm sealing type differential pressure transmitter - Google Patents
Diaphragm sealing type differential pressure transmitter Download PDFInfo
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- CN115855359B CN115855359B CN202211663078.2A CN202211663078A CN115855359B CN 115855359 B CN115855359 B CN 115855359B CN 202211663078 A CN202211663078 A CN 202211663078A CN 115855359 B CN115855359 B CN 115855359B
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- Prior art keywords
- butt joint
- diaphragm
- transmitter
- differential pressure
- joint pipe
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- 238000007789 sealing Methods 0.000 title description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 90
- 238000004062 sedimentation Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 239000013049 sediment Substances 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 description 27
- 238000003825 pressing Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a diaphragm sealed differential pressure transmitter, which comprises a differential pressure transmitter body, wherein the differential pressure transmitter body comprises a transmitter core body, a high-pressure butt joint pipe, a low-pressure butt joint pipe and a butt joint assembly, a display instrument is arranged at the top of the transmitter core body, a controller is arranged on the display instrument, one ends of the high-pressure butt joint pipe and the low-pressure butt joint pipe are inserted into the inner side of the butt joint assembly, the other ends of the high-pressure butt joint pipe and the low-pressure butt joint pipe are respectively communicated with different liquid medium input devices, a cleaning mechanism is arranged at the bottom of a communicating hose of the diaphragm sealed differential pressure transmitter, sediment in a liquid medium in the space is deposited in the interior of a discharge pipeline along an inclined sedimentation plate, the sediment can be discharged through a control valve, long-time contact abrasion of the diaphragm is avoided, and the risk that external dust and impurities enter the interior of the transmitter core body is reduced during subsequent maintenance through the adoption of a double-layer diaphragm.
Description
Technical Field
The invention relates to the technical field of differential pressure transmitters, in particular to a diaphragm-sealed differential pressure transmitter.
Background
Diaphragm sealed differential pressure transmitters are used to measure the pressure, level or density of a liquid, gas or vapor. By connecting high-pressure and low-pressure medium, the membrane is subjected to micro deformation after being pressed, deformation displacement or frequency is transmitted to the transducer sensor through liquid of the capillary tube, and the deformation displacement or frequency is converted into an output signal after being processed by the transducer sensor.
In the prior art, through directly carrying the outside liquid to the changer core along the pipeline in to can carry out long-time stay in this region, consequently the inside impurity of liquid also can be direct in contact with the diaphragm part for a long time, this state can produce wearing and tearing to the surface of diaphragm, the removal accuracy after the influence follow-up diaphragm pressure-bearing, and need dismantle when this part space inside impurity is clean, the clean process is wasted time and energy, on the other hand, when carrying out periodic maintenance or change to the diaphragm, can expose the inside sensor part of changer core outside, lead to outside dust to waft into, and then the follow-up accuracy of use to the sensor produces the influence.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a diaphragm sealed differential pressure transmitter so as to solve the problems in the background art, and the diaphragm sealed differential pressure transmitter can clean or update liquid in a butt joint pipeline conveniently and efficiently, prolongs the service life and has more comprehensive tightness to the inside of a core body.
In order to achieve the above object, the present invention is realized by the following technical scheme: the utility model provides a diaphragm sealed differential pressure transmitter, includes the differential pressure transmitter body, the differential pressure transmitter body includes transmitter core, high pressure is to taking over, low pressure is to taking over and docking assembly, display instrument is installed at the top of transmitter core, be provided with the controller on the display instrument, the both sides of transmitter core all are provided with docking assembly, the high pressure is to taking over and low pressure is to the inboard of inserting docking assembly to the one end of taking over, and high pressure is to taking over and low pressure is to the other end of taking over and communicate with different liquid medium input device respectively, the inside of transmitter core is provided with inlayer diaphragm and outer diaphragm, and inlayer diaphragm and outer diaphragm laminate mutually, independent clean mechanism is all installed to the bottom of taking over and low pressure to taking over.
Further, the high-pressure butt joint pipe and the low-pressure butt joint pipe are composed of a communication hose and a butt joint metal pipeline, one end of the communication hose is embedded into the inner side of the butt joint assembly, a strip-shaped through hole is formed in the bottom of the communication hose, and the cleaning mechanism is fixedly installed at the bottom of the communication hose.
Further, the butt joint metal pipeline is fixedly sleeved at the other end of the communication hose, and a flange plate is arranged at the tail end of the butt joint metal pipeline.
Further, the cleaning mechanism comprises an abutting plate and a discharge pipeline, a sedimentation plate is arranged on the inner side of the abutting plate, a sedimentation port is formed in the top of one end of the discharge pipeline, a valve is arranged on the surface of the discharge pipeline, and a discharge port is formed in the tail end of the discharge pipeline.
Further, the communication hose is communicated with the inner space of the butt plate through the strip-shaped through hole at the bottom, and the tail end of the sedimentation plate is aligned with the sedimentation opening.
Further, the butt joint subassembly includes butt joint sleeve and handle, handle fixed mounting is at the surface of butt joint sleeve, the end of butt joint sleeve is provided with the second magnetism stone ring, the surface paste of second magnetism stone ring has the elasticity extrusion layer, the side of changer core is provided with the butt joint hole.
Further, the inner wall of the butt joint hole and the surface of the butt joint sleeve are both provided with screw thread structures, and the butt joint sleeve is screwed on the inner side of the butt joint hole through the screw thread structures.
Further, the inside of butt joint hole is provided with back backing ring, fixed clamping ring is installed to the outside of back backing ring, fixed clamping ring's surface welding installs the reference column, fixed clamping ring's surface is pressed there is movable clamping ring.
Further, an inner-layer diaphragm is laid on the inner side of the fixed compression ring, an outer-layer diaphragm is laid on the inner side of the movable compression ring, and the inner-layer diaphragm and the outer-layer diaphragm are mutually attached.
Further, the locating hole has been seted up on the surface of activity clamping ring, and the activity clamping ring passes through the locating hole cover to be established on the reference column after with fixed clamping ring laminating alignment mutually, first magnetite ring has been laid on the surface of activity clamping ring, separate through the elasticity extrusion layer between first magnetite ring and the second magnetite ring.
The invention has the beneficial effects that: the invention discloses a diaphragm sealed differential pressure transmitter which comprises a differential pressure transmitter body, wherein the differential pressure transmitter body comprises a transmitter core body, a display instrument, a controller, a butt joint assembly, a high-pressure butt joint pipe, a low-pressure butt joint pipe, a butt joint metal pipeline, a flange plate, a cleaning mechanism, a communication hose, a strip-shaped through hole, a butt joint plate, a sedimentation plate, a discharge pipeline, a sedimentation port, a valve, a discharge port, a butt joint sleeve, a handle, a butt joint hole, a rear baffle ring, a fixed compression ring, an inner diaphragm, a positioning column, a movable compression ring, an outer diaphragm, a positioning hole, a first magnet ring, a second magnet ring and an elastic extrusion layer.
1. This diaphragm seal formula differential pressure transmitter sets up clean mechanism in the bottom of intercommunication hose, in long-time pressure measurement in-process, deposits the deposit in the liquid medium in this space along the sedimentation plate deposit in the inside of exhaust pipe, can discharge through control valve subsequently, avoids producing long-time contact wearing and tearing to the diaphragm.
2. The diaphragm sealed differential pressure transmitter is connected with the hose part and the transmitter core part through the docking assembly, and can directly disassemble the docking assembly to expose the internal diaphragm assembly part, so that the diaphragm part is inspected when the diaphragm is regularly maintained, and convenience is provided for maintenance or part replacement.
3. This sealed differential pressure transmitter of diaphragm has used double-deck diaphragm structure, presses outer diaphragm at inlayer diaphragm surface through the cooperation form of reference column and locating hole, because double-deck diaphragm laminating all the time together, consequently still can play the pressure transfer function that the individual layer diaphragm realized, when subsequent maintenance simultaneously, reduced outside dust impurity and entered into the inside risk of transmitter core.
Drawings
FIG. 1 is a schematic diagram of the configuration of a diaphragm sealed differential pressure transmitter of the present invention;
FIG. 2 is a schematic diagram of a cleaning mechanism portion of a diaphragm sealed differential pressure transmitter according to the present invention;
FIG. 3 is a schematic diagram of a portion of a docking assembly of a diaphragm sealed differential pressure transmitter of the present invention;
FIG. 4 is a cross-sectional view of a mating hole portion of a diaphragm sealed differential pressure transmitter of the present invention;
FIG. 5 is a schematic diagram of a diaphragm portion of a diaphragm sealed differential pressure transmitter of the present invention;
in the figure: 1. a transmitter core; 2. displaying the instrument; 3. a controller; 4. a docking assembly; 5. a high pressure butt joint pipe; 6. a low pressure butt joint pipe; 7. butt-jointing metal pipelines; 8. a flange plate; 9. a cleaning mechanism; 10. a communication hose; 11. a bar-shaped through hole; 12. an abutting plate; 13. a sedimentation plate; 14. a discharge pipe; 15. a precipitation port; 16. a valve; 17. a discharge port; 18. a butt joint sleeve; 19. a handle; 20. a butt joint hole; 21. a rear baffle ring; 22. fixing the compression ring; 23. an inner layer separator; 24. positioning columns; 25. a movable compression ring; 26. an outer layer separator; 27. positioning holes; 28. a first magnet ring; 29. a second magnet ring; 30. and (5) elastically extruding the layer.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a sealed differential pressure transmitter of diaphragm, includes the differential pressure transmitter body, the differential pressure transmitter body includes transmitter core 1, high pressure butt joint pipe 5, low pressure butt joint pipe 6 and docking module 4, display instrument 2 is installed at the top of transmitter core 1, be provided with controller 3 on the display instrument 2, the both sides of transmitter core 1 all are provided with docking module 4, the inboard of docking module 4 is all inserted to the one end of high pressure butt joint pipe 5 and low pressure butt joint pipe 6, and the other end of high pressure butt joint pipe 5 and low pressure butt joint pipe 6 communicates with different liquid medium input device respectively, the inside of transmitter core 1 is provided with inlayer diaphragm 23 and outer diaphragm 26, and inlayer diaphragm 23 and outer diaphragm 26 laminate mutually, independent clean mechanism 9 is all installed to the bottom of high pressure butt joint pipe 5 and low pressure butt joint pipe 6, and this sealed differential pressure transmitter of diaphragm carries out the butt joint with outside liquid medium conveying equipment through high pressure butt joint pipe 5 and low pressure butt joint pipe 6 respectively, carries out the inside of dual pressure core under the pressure environment and carries out the high pressure pipe 1 and the inside with the liquid medium conveying equipment of docking module through the high pressure butt joint pipe 6 and the inside of pipe 1, and the inside of pipe 1 is carried out the maintenance through the high pressure pipe 1 and the inside of pipe 1, and the inside of implementing the device is carried out the maintenance of diaphragm 1 to the high pressure pipe 1.
In this embodiment, the high-pressure butt joint pipe 5 and the low-pressure butt joint pipe 6 are composed of a communication hose 10 and a butt joint metal pipe 7, one end of the communication hose 10 is embedded into the inside of the butt joint assembly 4, a strip-shaped through hole 11 is formed in the bottom of the communication hose 10, a cleaning mechanism 9 is fixedly installed at the bottom of the communication hose 10, the butt joint metal pipe 7 is fixedly sleeved at the other end of the communication hose 10, a flange 8 is installed at the tail end of the butt joint metal pipe 7, specifically, the inside of the butt joint sleeve 18 is filled with the communication hose 10 in the two butt joint pipes, sealing and fixing are performed, the butt joint pipe can be installed along with the inside of the butt joint sleeve 18 in a screwing mode, and the other end of the butt joint pipe is connected and installed through the flange 8.
In this embodiment, the cleaning mechanism 9 includes an abutting plate 12 and a discharge pipe 14, a settling plate 13 is disposed on the inner side of the abutting plate 12, a settling port 15 is disposed at the top of one end of the discharge pipe 14, a valve 16 is mounted on the surface of the discharge pipe 14, a discharge port 17 is disposed at the end of the discharge pipe 14, the communication hose 10 is communicated with the inner space of the abutting plate 12 through a strip-shaped through hole 11 at the bottom, the end of the settling plate 13 is aligned with the settling port 15, the hose and the metal pipe are spliced in the high-pressure abutting pipe 5 and the low-pressure abutting pipe 6, and the cleaning mechanism 9 is disposed at the bottom of the hose, during the long-time pressure measurement, the sedimentation in the liquid medium in the space is deposited in the discharge pipeline 14 along the inclined sedimentation plate 13, the sedimentation can be discharged through the control valve 16, the sedimentation is concentrated in the process, the efficient cleaning effect is realized, the long-time contact abrasion to the diaphragm is avoided, the waste generated in the cleaning process is reduced, in particular, in the measuring process, the high-pressure butt joint pipe 5 and the low-pressure butt joint pipe 6 are in the liquid retaining process, impurities are deposited, and then flow into the bottom discharge pipeline 14 along the sedimentation plate 13, when the liquid in the area is updated, the valve 16 is directly opened, and the deposited sediment is discharged outwards from the discharge port 17.
In this embodiment, the docking assembly 4 includes the docking sleeve 18 and the handle 19, the handle 19 fixed mounting is at the surface of docking sleeve 18, the end of docking sleeve 18 is provided with second magnet ring 29, the surface subsides of second magnet ring 29 has elasticity extrusion layer 30, the side of transmitter core 1 is provided with docking hole 20, all be provided with the helicitic texture on the inner wall of docking hole 20 and the surface of docking sleeve 18, and docking sleeve 18 passes through this helicitic texture and adorns soon in docking hole 20, is connected hose portion and transmitter core 1 part through docking assembly 4, and the cooperation hose has certain elasticity, can directly expose the diaphragm subassembly part of inside after dismantling docking assembly 4, from the follow-up periodic maintenance time to examine the diaphragm part, for maintenance or change part has provided convenience, and specifically, when installing, first will communicate hose 10 and insert docking sleeve 18 into docking hole 20, can be with docking sleeve 18 in docking hole 20 through rotating handle 19, can realize the connection process of screwing.
In this embodiment, a rear baffle ring 21 is disposed inside the docking hole 20, a fixed pressing ring 22 is mounted on the outer side of the rear baffle ring 21, a positioning column 24 is mounted on the surface of the fixed pressing ring 22 in a welded manner, a movable pressing ring 25 is pressed on the surface of the fixed pressing ring 22, an inner membrane 23 is laid on the inner side of the fixed pressing ring 22, an outer membrane 26 is laid on the inner side of the movable pressing ring 25, the inner membrane 23 and the outer membrane 26 are mutually attached, a positioning hole 27 is formed on the surface of the movable pressing ring 25, the movable pressing ring 25 is sheathed on the positioning column 24 through the positioning hole 27 and is mutually attached and aligned with the fixed pressing ring 22, a first magnet ring 28 is laid on the surface of the movable pressing ring 25, the first magnet ring 28 and the second magnet ring 29 are separated through an elastic extrusion layer 30, a double-layer membrane structure is used, the outer diaphragm 26 is pressed on the surface of the inner diaphragm 23 through the matching mode of the positioning column 24 and the positioning hole 27, then the two diaphragms are bonded and fixed after the pressure is applied by the butt joint assembly 4, as the two diaphragms are always bonded together, the pressure transmission function realized by the single diaphragm can still be realized, and simultaneously, when the worn outer diaphragm 26 is maintained and replaced, the inner diaphragm 23 always shields and seals the transmitter core 1, thereby reducing the risk that external dust impurities enter the transmitter core 1, specifically, the movable compression ring 25 can be pressed on the fixed compression ring 22 through the elastic extrusion layer 30 by inserting the butt joint sleeve 18 into the butt joint hole 20, the outer diaphragm 26 and the inner diaphragm 23 are bonded at the same time, and when the butt joint assembly 4 is directly disassembled for subsequent maintenance, the outer diaphragm 26 can be cleaned or replaced by taking out the outer diaphragm 26 through the first magnet ring 28 and the second magnet ring 29, the inner diaphragm 23 is always fixedly connected with the inner baffle ring part, the inner diaphragms 23 on the two sides are always fixed, the high-precision sensor part inside the transmitter core body 1 can be shielded and protected, and the sealing and protecting effects on the internal structure are improved.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a diaphragm seal formula differential pressure transmitter, includes differential pressure transmitter body, its characterized in that: the differential pressure transmitter body comprises a transmitter core body (1), a high-pressure butt joint pipe (5), a low-pressure butt joint pipe (6) and a butt joint assembly (4), a display instrument (2) is arranged at the top of the transmitter core body (1), a controller (3) is arranged on the display instrument (2), the butt joint assembly (4) is arranged at two sides of the transmitter core body (1), one ends of the high-pressure butt joint pipe (5) and the low-pressure butt joint pipe (6) are inserted into the inner side of the butt joint assembly (4), the other ends of the high-pressure butt joint pipe (5) and the low-pressure butt joint pipe (6) are respectively communicated with different liquid medium input devices, an inner layer diaphragm (23) and an outer layer diaphragm (26) are arranged in the transmitter core body (1), the inner layer diaphragm (23) and the outer layer diaphragm (26) are attached, independent cleaning mechanisms (9) are respectively arranged at the bottoms of the high-pressure butt joint pipe (5) and the low-pressure butt joint pipe (6), the inner sides of the high-pressure butt joint pipe (5) and the low-pressure butt joint pipe (6) are respectively communicated with the hose (10) by the hose (10) and are fixedly connected with one ends of the hose (10) by the hose (10) respectively, the hose (10) are communicated with the hose (10) and are fixedly connected with the hose (10), the cleaning mechanism (9) comprises an abutting plate (12) and a discharge pipeline (14), a sedimentation plate (13) is arranged on the inner side of the abutting plate (12), a sedimentation port (15) is formed in the top of one end of the discharge pipeline (14), a valve (16) is arranged on the surface of the discharge pipeline (14), a discharge port (17) is formed in the tail end of the discharge pipeline (14), a communication hose (10) is communicated with the inner space of the abutting plate (12) through a strip-shaped through hole (11) in the bottom, and the tail end of the sedimentation plate (13) is aligned with the sedimentation port (15).
2. The diaphragm sealed differential pressure transmitter of claim 1, wherein: the butt joint metal pipeline (7) is fixedly sleeved at the other end of the communication hose (10), and a flange plate (8) is arranged at the tail end of the butt joint metal pipeline (7).
3. The diaphragm sealed differential pressure transmitter of claim 1, wherein: the butt joint assembly (4) comprises a butt joint sleeve (18) and a handle (19), the handle (19) is fixedly arranged on the surface of the butt joint sleeve (18), a second magnet ring (29) is arranged at the tail end of the butt joint sleeve (18), an elastic extrusion layer (30) is attached to the surface of the second magnet ring (29), and a butt joint hole (20) is formed in the side edge of the transmitter core body (1).
4. A diaphragm sealed differential pressure transmitter as defined in claim 3, wherein: screw thread structures are arranged on the inner wall of the butt joint hole (20) and the surface of the butt joint sleeve (18), and the butt joint sleeve (18) is screwed on the inner side of the butt joint hole (20) through the screw thread structures.
5. A diaphragm sealed differential pressure transmitter as defined in claim 3, wherein: the inside of butt joint hole (20) is provided with back baffle ring (21), fixed clamping ring (22) are installed to the outside of back baffle ring (21), fixed clamping ring (22) surface welding installs reference column (24), the surface of fixed clamping ring (22) is pressed there is movable clamping ring (25).
6. The diaphragm sealed differential pressure transmitter of claim 5, wherein: an inner-layer diaphragm (23) is paved on the inner side of the fixed compression ring (22), an outer-layer diaphragm (26) is paved on the inner side of the movable compression ring (25), and the inner-layer diaphragm (23) and the outer-layer diaphragm (26) are mutually attached.
7. The diaphragm sealed differential pressure transmitter of claim 6, wherein: the surface of activity clamping ring (25) has seted up locating hole (27), and activity clamping ring (25) laminate mutually with fixed clamping ring (22) and align after passing through locating hole (27) cover is established on reference column (24), the surface of activity clamping ring (25) has laid first magnet ring (28), separate through elasticity extrusion layer (30) between first magnet ring (28) and the second magnet ring (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663078.2A CN115855359B (en) | 2022-12-23 | 2022-12-23 | Diaphragm sealing type differential pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663078.2A CN115855359B (en) | 2022-12-23 | 2022-12-23 | Diaphragm sealing type differential pressure transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115855359A CN115855359A (en) | 2023-03-28 |
| CN115855359B true CN115855359B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211663078.2A Active CN115855359B (en) | 2022-12-23 | 2022-12-23 | Diaphragm sealing type differential pressure transmitter |
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| Country | Link |
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| CN (1) | CN115855359B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4668889A (en) * | 1986-06-06 | 1987-05-26 | Adams Donald L | Static overpressure protection system for differential pressure transducer |
| US4693121A (en) * | 1985-06-05 | 1987-09-15 | The Foxboro Company | Differential-pressure measuring apparatus with improved overpressure protection |
| JP2011002233A (en) * | 2009-06-16 | 2011-01-06 | Yokogawa Electric Corp | Diaphragm seal type pressure difference measuring device |
| CN108240885A (en) * | 2016-12-24 | 2018-07-03 | Wika亚历山大·威甘德欧洲股份两合公司 | With the double diaphragms vacuumized and the diaphragm seal component of vacuum monitoring device |
| CN109668676A (en) * | 2019-01-28 | 2019-04-23 | 安徽天康(集团)股份有限公司 | A kind of double diaphragm differential pressure gauges of high static pressure |
-
2022
- 2022-12-23 CN CN202211663078.2A patent/CN115855359B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4693121A (en) * | 1985-06-05 | 1987-09-15 | The Foxboro Company | Differential-pressure measuring apparatus with improved overpressure protection |
| US4668889A (en) * | 1986-06-06 | 1987-05-26 | Adams Donald L | Static overpressure protection system for differential pressure transducer |
| JP2011002233A (en) * | 2009-06-16 | 2011-01-06 | Yokogawa Electric Corp | Diaphragm seal type pressure difference measuring device |
| CN108240885A (en) * | 2016-12-24 | 2018-07-03 | Wika亚历山大·威甘德欧洲股份两合公司 | With the double diaphragms vacuumized and the diaphragm seal component of vacuum monitoring device |
| CN109668676A (en) * | 2019-01-28 | 2019-04-23 | 安徽天康(集团)股份有限公司 | A kind of double diaphragm differential pressure gauges of high static pressure |
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| Publication number | Publication date |
|---|---|
| CN115855359A (en) | 2023-03-28 |
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Effective date of registration: 20240220 Address after: 710000, Room 01, 25th Floor, Block C, Saigao Plaza, No. 55 Fengcheng Seventh Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Applicant after: Xi'an Hengli Petroleum Equipment Co.,Ltd. Country or region after: China Address before: 430000 103, Building 4, Xingyuanchang Village, Daqiao New Area Office, Jiangxia District, Wuhan City, Hubei Province Applicant before: Wuhan Imax Intelligent Technology Co.,Ltd. Country or region before: China |
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Denomination of invention: A diaphragm sealed differential pressure transmitter Granted publication date: 20240312 Pledgee: Xi'an Caijin Financing Guarantee Co.,Ltd. Pledgor: Xi'an Hengli Petroleum Equipment Co.,Ltd. Registration number: Y2024980041992 |