CN218973708U - Corrosion-resistant digital differential pressure meter - Google Patents
Corrosion-resistant digital differential pressure meter Download PDFInfo
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- CN218973708U CN218973708U CN202222257960.9U CN202222257960U CN218973708U CN 218973708 U CN218973708 U CN 218973708U CN 202222257960 U CN202222257960 U CN 202222257960U CN 218973708 U CN218973708 U CN 218973708U
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Abstract
The utility model relates to the technical field of differential pressure meters and discloses a corrosion-resistant digital differential pressure meter, which comprises a diaphragm tube seat, wherein two ends of the diaphragm tube seat are connected with pressure isolation connectors in a threaded manner, the top of the diaphragm tube seat is connected with a mounting shell in a threaded manner, the top of the diaphragm tube seat is provided with a pressure meter rear shell, two ends of the diaphragm tube seat are fixedly provided with tube ring connectors, and the top of the diaphragm tube seat is provided with a threaded hole I; adopt threaded connection between cover circle and the manometer backshell, conveniently open the cover circle, and PCB board support joint is on the installation panel, can be direct take off to change, the while installation shell passes through threaded connection spare and manometer backshell threaded connection, the installation shell passes through threaded connection spare and diaphragm tube socket threaded connection down, can be direct dismantle the installation shell spiral, the inside pressure sensor of installation shell is also with its self threaded connection simultaneously, also very convenient dismantlement is changed, thereby realized the purpose of conveniently changing the part.
Description
Technical Field
The utility model relates to the technical field of differential pressure meters, in particular to a corrosion-resistant digital differential pressure meter.
Background
The digital differential pressure meter that circulates in the market at present adopts differential pressure sensor as measuring element generally, and differential pressure sensor only has gas exclusive use or compatible stainless steel's liquid exclusive use generally for the digital differential pressure meter of measuring strong corrosive medium, generally adds the diaphragm device of strong corrosion resistance on the exclusive basis of compatible stainless steel's liquid, and it has following shortcoming:
the digital differential pressure meter shell adopts stainless steel full-sealing structure, but when long-time use, its inside component can suffer the damage, if adopt traditional stainless steel full-sealing, then hardly open, inconvenient change the inside damaged component, lead to discarding digital differential pressure meter direct overall change, cause certain waste.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a corrosion-resistant digital differential pressure meter, which has the advantage of convenient part replacement, and solves the problems that if the traditional stainless steel is adopted to be fully sealed, the traditional stainless steel is difficult to open, and the internal damaged elements are inconvenient to replace, so that the digital differential pressure meter is directly replaced and discarded as a whole, and a certain waste is caused.
(II) technical scheme
In order to achieve the aim of conveniently replacing parts, the utility model provides the following technical scheme: the corrosion-resistant digital differential pressure meter comprises a diaphragm tube seat, wherein pressure isolation joints are connected at two ends of the diaphragm tube seat in a threaded manner, two sensors are fixedly arranged in the pressure isolation joints, the surfaces of the sensors are covered with isolation diaphragms with strong corrosion resistance, the top of the diaphragm tube seat is connected with an installation shell in a threaded manner, and a pressure meter rear shell is arranged at the top of the diaphragm tube seat;
the two ends of the diaphragm tube seat are fixedly provided with tube ring connectors, and the top of the diaphragm tube seat is provided with a first threaded hole; the main body material can be made of PP, PVDF, PTFE material according to the measuring medium, so that a plurality of strong acid and strong alkali fluid media can be measured.
An internal thread connecting piece is fixedly arranged on one side of the pressure isolation joint, and an external thread connecting piece is fixedly arranged on the other side of the pressure isolation joint;
the bottom of the installation shell is fixedly provided with a lower threaded connecting piece, the top of the installation shell is fixedly provided with an upper threaded connecting piece, the inner threads of the installation shell are connected with a pressure sensor, the surface of the pressure sensor is covered with a corrosion-resistant plastic isolation diaphragm, and the top of the pressure sensor is provided with a sealing ring;
the bottom fixed mounting of manometer backshell has the sleeve, telescopic inner wall fixed mounting has the installation panel, the inside joint of installation panel has the PCB board, one side fixed mounting of PCB board has the display screen, one side cover of display screen has sealed pad, one side threaded connection of manometer backshell has the cover circle, screw hole second that link up with the sleeve has been seted up to the bottom of manometer backshell.
Preferably, the internal thread connecting piece is in threaded connection with the pipe ring connector.
Preferably, the lower threaded connecting piece is in threaded connection with the diaphragm pipe seat through a first threaded hole.
Preferably, the upper threaded connecting piece is in threaded connection with the pressure gauge rear shell through a threaded hole II.
Preferably, the sleeve is sleeved outside the mounting shell.
Preferably, the pressure sensor is in signal connection with a PCB, and the PCB is in signal connection with a display screen.
Preferably, the pressure gauge rear shell, the PCB board, the display screen, the sealing gasket and the cover ring are assembled into the digital pressure gauge.
Preferably, the display screen is a digital screen assembled by differential pressure, high pressure and low pressure screens.
(III) beneficial effects
Compared with the prior art, the utility model provides a corrosion-resistant digital differential pressure meter, which comprises the following components
The beneficial effects are that:
this corrosion-resistant digital differential pressure meter adopts threaded connection between cover circle and the manometer backshell, conveniently opens the cover circle, and PCB board support joint is on the installation panel, can be direct take off to change, the while installation shell passes through threaded connection spare and manometer backshell threaded connection, the installation shell passes through threaded connection spare and diaphragm tube socket threaded connection down, can be direct dismantle the installation shell spiral, the inside pressure sensor of installation shell is also rather than self threaded connection simultaneously, also very convenient dismantlement is changed, thereby realized the purpose of conveniently changing the part.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic diagram of the front structure of the present utility model;
FIG. 3 is a schematic view of a three-dimensional exploded structure of the present utility model;
FIG. 4 is a schematic view of a three-dimensional exploded structure of the present utility model;
FIG. 5 is a schematic view of the mounting housing of the present utility model in cross-section.
In the figure:
1-a diaphragm tube seat, 11-a tube ring connector and 12-a first threaded hole;
2-pressure isolating joint, 21-internal threaded connection, 22-external threaded connection;
3-mounting a shell, 31-a lower threaded connector, 32-an upper threaded connector, 33-a pressure sensor and 34-a sealing ring;
the pressure gauge comprises a 4-pressure gauge rear shell, a 40-sleeve, a 41-mounting panel, a 42-PCB (printed circuit board), a 43-display screen, a 44-sealing gasket, a 45-cover ring and a 46-threaded hole II.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, a corrosion-resistant digital differential pressure meter comprises a diaphragm tube seat 1, wherein pressure isolation joints 2 are connected to two ends of the diaphragm tube seat 1 in a threaded manner, two sensors are fixedly installed in the pressure isolation joints 2, the surfaces of the sensors are covered with corrosion-resistant isolation diaphragms, an installation shell 3 is connected to the top of the diaphragm tube seat 1 in a threaded manner, and a pressure meter rear shell 4 is arranged at the top of the diaphragm tube seat 1. The instrument adopts a double-sensor structure, and can display the pressure at the low pressure end and the pressure difference at the high pressure end and the pressure difference at the two ends on the instrument at the same time, thereby solving the defect that the traditional digital differential pressure gauge can only display differential pressure.
Referring to fig. 1-2, two ends of a diaphragm tube seat 1 are fixedly provided with a tube ring connector 11, and the top of the diaphragm tube seat 1 is provided with a threaded hole I12; the main body material can be made of PP, PVDF, PTFE material according to the measuring medium, so that a plurality of strong acid and strong alkali fluid media can be measured.
Referring to fig. 3 to 4, an internal screw thread connector 21 is fixedly installed at one side of the pressure isolation joint 2, and the internal screw thread connector 21 is screw-coupled with the pipe ring connector 11. The other side of the pipeline is fixedly provided with an external threaded connecting piece 22, and the external threaded connecting piece 22 is in threaded connection with an external pipeline.
Referring to fig. 3 to 5, a lower screw 31 is fixedly installed at the bottom of the mounting housing 3, and the lower screw 31 is screw-coupled to the diaphragm seat 1 through a screw hole one 12. The top of the pressure gauge is fixedly provided with an upper threaded connecting piece 32, and the upper threaded connecting piece 32 is in threaded connection with the pressure gauge rear shell 4 through a threaded hole II 46. The pressure sensor 33 is screwed inside the installation housing 3, the surface of the pressure sensor 33 is covered with a corrosion-resistant plastic isolation diaphragm, and measured pressure data are obtained through the pressure sensor 33, and the conventional digital differential pressure gauge is basically arranged in the way. The top of the pressure sensor 33 is provided with a sealing ring 34.
Referring to fig. 3-4, a sleeve 40 is fixedly installed at the bottom of the pressure gauge rear case 4, and the sleeve 40 is sleeved on the outer side of the installation case 3. The bottom of the pressure gauge rear shell 4 is provided with a threaded hole II 46 communicated with the sleeve 40. The inner wall of sleeve 40 fixed mounting has installation panel 41, and the inside joint of installation panel 41 has PCB board 42, and two sensors and PCB board 42 signal connection, and PCB board 42 is handled the sensor signal, and the treater on the PCB board 42 can be with differential pressure value conversion 4-20mA analog signal or RS485 communication signal of standard to built-in relay can freely set up the control point, realizes differential pressure automatic control's purpose.
One side of the PCB 42 is fixedly provided with a display screen 43, the display screen 43 is formed by assembling differential pressure, high pressure and low pressure screens, the three screens are used for displaying, the low pressure end pressure and the difference between the high pressure end pressure and the two ends pressure can be displayed on the instrument at the same time, the defect that the traditional digital differential pressure meter can only display differential pressure is overcome, the pressure sensor 33 is in signal connection with the PCB 42, and the PCB 42 is in signal connection with the display screen 43. The pressure sensor 33 obtains measured pressure data and transmits the measured pressure data to a processor on the PCB board 42 for data processing, and then the processed pressure difference value is displayed through the display screen 43.
Referring to fig. 3-4, a sealing pad 44 is sleeved on one side of a display screen 43, a cover ring 45 is connected to one side of a pressure gauge rear shell 4 in a threaded manner, the pressure gauge rear shell 4, a PCB board 42, the display screen 43, the sealing pad 44 and the cover ring 45 are assembled into a digital pressure gauge, and the casing is made of full plastic, and is of a full plastic anti-corrosion structure, is mainly used for pressure difference measurement of chemical pipelines, is anti-corrosion and can be used for measuring strong acid and strong alkali fluid media.
Working principle: when the pressure gauge is used, the PCB 42 is clamped on the mounting panel 41 on the inner wall of the pressure gauge rear shell 4, the sealing gasket 44 is sleeved on the outer ring of the display screen 43, then the cover ring 45 is screwed tightly with the pressure gauge rear shell 4, the mounting shell 3 is screwed inside the threaded hole II 46 at the bottom of the pressure gauge rear shell 4 through the upper screwed connection piece 32, meanwhile, the sleeve 40 is just covered on the outer side of the mounting shell 3, and the pressure sensor 33 is screwed inside the mounting shell 3; the mounting housing 3 is screwed into the interior of the first threaded hole 12 at the top of the diaphragm seat 1 by the lower threaded connector 31, and the pressure isolating joint 2 is screwed into the pipe ring connectors 11 at both ends of the diaphragm seat 1 by the inner threaded connector 21, wherein the above is in a threaded connection mode, so that all components can be disassembled during the reverse operation.
The corrosion-resistant digital differential pressure meter has the advantages that the liquid receiving part can be made of PP, PVDF or PTFE materials according to measurement media, a plurality of strong acid and strong alkali fluid media can be measured, the service life is long, and compared with the digital differential pressure meter with a metal structure, the corrosion-resistant digital differential pressure meter can effectively save cost and has higher cost performance.
This corrosion-resistant digital differential pressure meter adopts three screen display, and unique differential pressure, high pressure, low pressure simultaneous display mode is convenient for the user can more directly perceivedly observe pressure parameter, need not to increase measuring instrument again around the measuring point, and the pressure of high pressure end, low pressure end reduces the use digital display of instrument, reduces measuring cost. Meanwhile, a processor on the PCB can convert the differential pressure value into a standard 4-20mA analog signal or an RS485 communication signal, a relay is arranged in the differential pressure value, a control point can be set freely, and the purpose of differential pressure automatic control is achieved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a corrosion-resistant digital differential pressure table, includes diaphragm tube socket (1), the equal threaded connection in both ends of diaphragm tube socket (1) has pressure isolation joint (2), the inside fixed mounting of pressure isolation joint (2) has two sensors, sensor surface covers has the isolation diaphragm of corrosion-resistant, the top threaded connection of diaphragm tube socket (1) has installation shell (3), the top of diaphragm tube socket (1) is provided with manometer backshell (4), its characterized in that: the two ends of the diaphragm tube seat (1) are fixedly provided with tube ring connectors (11), and the top of the diaphragm tube seat (1) is provided with a first threaded hole (12);
an internal thread connecting piece (21) is fixedly arranged on one side of the pressure isolation joint (2), and an external thread connecting piece (22) is fixedly arranged on the other side of the pressure isolation joint;
the bottom of the installation shell (3) is fixedly provided with a lower threaded connecting piece (31), the top of the installation shell is fixedly provided with an upper threaded connecting piece (32), the inner thread of the installation shell (3) is connected with a pressure sensor (33), the surface of the pressure sensor (33) is covered with a corrosion-resistant plastic isolation diaphragm, and the top of the pressure sensor (33) is provided with a sealing ring (34);
the bottom fixed mounting of manometer backshell (4) has sleeve (40), the inner wall fixed mounting of sleeve (40) has installation panel (41), the inside joint of installation panel (41) has PCB board (42), one side fixed mounting of PCB board (42) has display screen (43), one side cover of display screen (43) is equipped with sealed pad (44), one side threaded connection of manometer backshell (4) has shroud (45), threaded hole two (46) that link up with sleeve (40) are seted up to the bottom of manometer backshell (4).
2. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the internal thread connecting piece (21) is in threaded connection with the pipe ring connector (11).
3. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the lower threaded connecting piece (31) is in threaded connection with the diaphragm tube seat (1) through a first threaded hole (12).
4. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the upper threaded connecting piece (32) is in threaded connection with the pressure gauge rear shell (4) through a threaded hole II (46).
5. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the sleeve (40) is sleeved on the outer side of the installation shell (3).
6. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the pressure sensor (33) is in signal connection with the PCB (42), and the PCB (42) is in signal connection with the display screen (43).
7. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the pressure gauge rear shell (4), the PCB (42), the display screen (43), the sealing gasket (44) and the cover ring (45) are assembled into the digital pressure gauge.
8. The corrosion resistant digital differential pressure gauge of claim 1, wherein: the display screen (43) is assembled into a digital screen by three screens of differential pressure, high pressure and low pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257960.9U CN218973708U (en) | 2022-08-26 | 2022-08-26 | Corrosion-resistant digital differential pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257960.9U CN218973708U (en) | 2022-08-26 | 2022-08-26 | Corrosion-resistant digital differential pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218973708U true CN218973708U (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222257960.9U Active CN218973708U (en) | 2022-08-26 | 2022-08-26 | Corrosion-resistant digital differential pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218973708U (en) |
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2022
- 2022-08-26 CN CN202222257960.9U patent/CN218973708U/en active Active
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