CN115219099A

CN115219099A - Intelligent pressure transmitter

Info

Publication number: CN115219099A
Application number: CN202210819057.9A
Authority: CN
Inventors: 潘炳辉; 于志良; 周晓伟; 邹凯; 李晓涛; 吕波; 许逸鹤
Original assignee: Changzhou Tianli Intelligent Control Co ltd
Current assignee: Changzhou Tianli Intelligent Control Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-10-21

Abstract

The invention discloses an intelligent pressure transmitter, which comprises a main body bin shell, a pressure measuring structure, a silicone oil observation structure, a pressure transmitting structure and a pressure guiding structure, wherein the pressure measuring structure is arranged on the main body bin shell; the bottom of casing is provided with the pressure measurement structure, and the bottom of pressure measurement structure is connected with and passes the pressure structure, pass the top in the pressure structure outside and be provided with silicon oil and survey the structure, two sets of silicon oil is surveyed the bottom of structure and is installed and draw the pressure structure, the both ends of casing are provided with front end housing and back lid respectively. According to the invention, through the design of the double pressure transmission structures, the pressure measurement operation is realized through two groups of pressure transmission structures, and each group of pressure transmission structures can independently complete the pressure transmission operation, because the isolation diaphragm of the pressure transmission structure is contacted with the detection medium for a long time and is easy to be corroded by the detection medium, the design can ensure that the device can normally operate when one pressure transmission structure is corroded and the other group of pressure transmission structures can normally operate when silicone oil leakage occurs, so that the pressure transmitter is prevented from being paralyzed.

Description

Intelligent pressure transmitter

Technical Field

The invention relates to the technical field of transmitters, in particular to an intelligent pressure transmitter.

Background

The pressure transmitter converts actual pressure change of a process field into an electric signal and then outputs and converts the electric signal into observable digital information, thereby being convenient for people to observe the pressure change of liquid or gas in real time.

Because the pressure transmitter is a high-precision instrument, the use environment of the pressure transmitter is often complex, particularly, the pressure transmitter of some liquid is soaked by the monitored liquid for a long time, and parts of the pressure transmitter are easily corroded seriously, the pressure transmitter is often overhauled frequently, and local parts are also replaced frequently, the pressure transmitter is usually disassembled for overhauling the existing pressure transmitter, then the parts are checked one by one, the overhauling is inconvenient, meanwhile, a pressure leading structure of the pressure sensor is used as a part which is in direct contact with a detection medium and is often corroded easily, when the existing pressure transmitter is maintained, the whole pressure leading structure is often replaced directly, and the maintenance cost is higher;

besides, the current isolation diaphragm is used as an important structure in the transmitter, and can be corroded for a long time in the process of directly contacting with a detection medium, although the isolation diaphragm is usually made of corrosion-resistant materials, the isolation diaphragm is easy to damage after being used for a long time, and silicone oil is leaked.

Disclosure of Invention

The present invention is directed to an intelligent pressure transmitter, which solves the above-mentioned problems associated with the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent pressure transmitter comprises a main body bin shell 1, a pressure measuring structure 2, a silicone oil observation structure 3, a pressure transmitting structure 4 and a pressure guiding structure 5; the pressure measuring structure 2 is arranged at the bottom of the shell 1, the pressure transmitting structure 4 is connected to the bottom of the pressure measuring structure 2, the silicone oil observing structures 3 are arranged at the top of the outer sides of the pressure transmitting structure 4, and the pressure guiding structures 5 are arranged at the bottoms of the two groups of silicone oil observing structures 3;

a front end cover 11 and a rear cover 14 are respectively arranged at two ends of the shell 1, a dial plate mounting seat 12 is arranged at one end, close to the front end cover 11, in the shell 1, and a connecting terminal 13 is arranged at one end, close to the rear cover 14, in the shell 1;

a bracket 21 is arranged at the top of the pressure measuring structure 2, the bracket 21 and the bottom of the shell 1 are fixed together through bolts, an adapter module 24 is arranged at one end inside the pressure measuring structure 2, an amplifier module 25 is arranged at the other end inside the pressure measuring structure 2, and the adapter module 24 is in telecommunication connection with the amplifier module 25 through a wire;

pass and press structure 4 to be provided with two sets ofly respectively, pass and press structure 4 includes silicon oil pipe 42, and is two sets of upper fixed plate 45 is installed jointly at silicon oil pipe 42's top, and upper fixed plate 45 and pressure measurement storehouse 23 fixed connection, and is two sets of bottom plate 46 is installed jointly to silicon oil pipe 42's bottom, pressure sensor 41 has all been installed at silicon oil pipe 42's top, and pressure sensor 41 is fixed on upper fixed plate 45, silicon oil pipe 42's bottom is provided with isolating diaphragm 44, isolating diaphragm 44 is fixed on bottom plate 46, silicon oil pipe 42's intermediate position department all installs termination valve 43, pressure sensor 41 passes through wire and adapter module 24 telecommunications connection.

Preferably: a visible window is arranged in the middle of the front end cover 11.

Preferably: one side of silicon oil observation structure 3 sets up access door 26, and the four corners department of access door 26 is connected with pressure measurement storehouse 23 through the bolt.

Preferably: the silicone oil observation structure 3 comprises a silicone oil observation tube 31, a tube plug 32 and a tube cap 33, the silicone oil observation tube 31 is fixed at the top of the outer side of a silicone oil tube 42, the silicone oil observation tube 31 is communicated with the silicone oil tube 42, the tube cap 33 is installed on the top of the silicone oil observation tube 31 through threads, the tube plug 32 is fixed on the tube cap 33, and the tube plug 32 extends to the inside of the silicone oil observation tube 31.

Preferably, the following components: the outer diameter of the pipe plug 32 is the same as the inner diameter of the silicone oil observation pipe 31, and the surface of the pipe plug 32 is provided with a rubber anti-slip layer.

Preferably, the following components: the top of the bracket 21 is semi-arc-shaped, and a wire arrangement hole 22 is formed in the middle of the pressure measuring structure 2.

Preferably: the pressure guiding structure 5 comprises a pressure guiding top cover 51, a convex block 52, a thread outer sleeve 53, a pressure guiding joint 54 and an anti-skid protrusion 55, the top of the pressure guiding structure 5 is provided with the pressure guiding top cover 51, the pressure guiding top cover 51 is in direct threaded connection with the lower fixing plate 46, the pressure guiding joint 54 is fixed at the bottom of the pressure guiding top cover 51, the thread outer sleeve 53 is arranged on the outer side of the pressure guiding joint 54, the anti-skid protrusion 55 is arranged at the bottom of the thread outer sleeve 53, and two sets of convex blocks 52 are arranged at the top of the outer side of the thread outer sleeve 53.

Preferably, the following components: a sealing ring is arranged at the joint of the pressure guiding top cover 51 and the lower fixing plate 46, and a threaded structure between the pressure guiding top cover 51 and the lower fixing plate 46 is made of rubber materials.

Preferably, the following components: the outer surface of the pressure guiding joint 54 is provided with threads, the inner surface of the thread outer sleeve 53 is provided with internal threads matched with the external threads of the pressure guiding joint 54, and the outer part of the thread outer sleeve 53 is provided with mounting threads.

Compared with the prior art, the invention provides an intelligent pressure transmitter, which has the following beneficial effects:

1. according to the design of the double pressure transmission structure, pressure measurement operation is realized through two groups of pressure transmission structures together, each group of pressure transmission structure can independently complete pressure transmission operation, because the isolation diaphragm of the pressure transmission structure is in contact with a detection medium for a long time and is easy to be corroded by the detection medium, the design can enable the device to be corroded in one pressure transmission structure, when silicone oil leaks, the other group of pressure transmission structure can normally operate, the pressure transmitter is prevented from being paralyzed, the actual industrial production and practical operation are prevented from being influenced, meanwhile, the double pressure transmission structure can enable pressure transmission to be more stable in the pressure monitoring process, and the pressure to be measured can be more accurate through two groups of data monitoring.

2. Compared with the conventional transmitter, the pressure-leading joint is correspondingly improved, the outer side of the pressure-leading joint is provided with the thread outer sleeve, the thread outer sleeve is wrapped on the outer side of the pressure-leading joint during installation, the outer surface of the pressure-leading joint can be prevented from contacting a detected medium, the pressure-leading joint can be well protected, the thread part of the pressure-leading joint is prevented from being corroded by the detected medium, the service life of the pressure-leading joint is greatly prolonged, only the thread outer sleeve on the outer side of the pressure-leading joint is needed during maintenance, the maintenance cost of equipment can be reduced, meanwhile, the design of the thread outer sleeve can enable the pressure transmitter to adapt to pipelines with different calibers, the transmitter can work by adopting the thread outer sleeve with the same caliber as that of an installation part to be installed on the outer side of the pressure-leading joint, and the use of the transmitter can be more convenient and flexible.

3. The invention also improves the monitoring of the pressure measuring structure and the pressure transmitting structure, a silicon oil observation structure is arranged on the pressure leading structure part, the amount of silicon oil can be observed, whether the silicon oil leaks laterally or not is judged, compared with a conventional pressure transmitter, the integral pressure transmitter needs to be disassembled for monitoring more conveniently, an access hole is arranged on the outer side of the pressure measuring structure, the position can be maintained in a targeted mode, meanwhile, the pressure measuring structure and a shell provided with an instrument and a wiring are arranged through a detachable support, the shell can be separated independently, the two pressure transmitting structures are combined, each independent position can be monitored independently, the independent disassembly and inspection can be carried out simultaneously, the maintenance is more convenient and fast, in addition, the design of the double pressure transmitting structures is realized, a stop valve is additionally arranged in each pressure transmitting structure, the stop valve can be closed while one pressure transmitting structure is monitored, the other one pressure transmitting structure can operate normally, the normal work of the pressure transmitter cannot be influenced while the maintenance is carried out, and the inspection and the convenience of the maintenance can be greatly improved by controlling the stop valve to be opened and closed while the reading fault is judged on the pressure transmitting structure.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the interior of the housing of the present invention;

FIG. 4 is a schematic view of the housing of the present invention coupled to a pressure measurement structure;

FIG. 5 is a schematic view of the observation structure of silicone oil according to the present invention;

FIG. 6 is a schematic view of a pressure transmitting structure according to the present invention;

fig. 7 is a drawing structure of the present invention.

In the figure: 1. a housing; 11. a front end cap; 12. a dial plate mounting seat; 13. a connection terminal; 14. a rear cover; 2. a pressure measuring structure; 21. a bracket; 22. a wire hole; 23. a pressure measuring bin; 24. an adapter module; 25. an amplifier module; 26. an access door; 3. a silicone oil observation structure; 31. a silicone oil observation tube; 32. a pipe plug; 33. a pipe cap; 4. a pressure transmitting structure; 41. a pressure sensor; 42. a silicon oil pipe; 43. an end valve; 44. an isolation diaphragm; 45. an upper fixing plate; 46. a lower fixing plate; 5. a pressure guiding structure; 51; the top cover is pressed; 52. a bump; 53. a threaded outer sleeve; 54. a pressure-inducing joint; 55. and (4) anti-skid bulges.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: an intelligent pressure transmitter comprises a main body bin shell 1, a pressure measuring structure 2, a silicone oil observation structure 3, a pressure transmitting structure 4 and a pressure guiding structure 5; the pressure measuring structure 2 is arranged at the bottom of the shell 1, the pressure transmitting structure 4 is connected to the bottom of the pressure measuring structure 2, the silicone oil observing structures 3 are arranged at the top of the outer sides of the pressure transmitting structure 4, and the pressure guiding structures 5 are arranged at the bottoms of the two groups of silicone oil observing structures 3;

And further: and a visual window is arranged in the middle of the front end cover 11, so that the pointer on the dial plate can be read conveniently.

Preferably, the following components: silicon oil is surveyd one side of structure 3 and is set up access door 26, and the four corners department of access door 26 is connected with pressure measurement storehouse 23 through the bolt, when the trouble of pressure measurement structure 2 is confirmed, can dismantle the access door, then carries out solitary maintenance to pressure measurement structure 2.

And further: the silicone oil observation structure 3 comprises a silicone oil observation tube 31, a pipe plug 32 and a pipe cap 33, the silicone oil observation tube 31 is fixed on the top of the outer side of a silicone oil tube 42, the silicone oil observation tube 31 is communicated with the silicone oil tube 42, the pipe cap 33 is installed on the top of the silicone oil observation tube 31 in a threaded mode, the pipe plug 32 is fixed on the pipe cap 33, the pipe plug 32 extends into the silicone oil observation tube 31, the interior of the silicone oil observation tube 31 can be observed from the position, whether side leakage occurs or not is judged according to the amount of silicone oil in the interior, and meanwhile, silicone oil can be added from the position after repairing is completed.

Further: the outer diameter of the pipe plug 32 is the same as the inner diameter of the silicone oil observation pipe 31, and the surface of the pipe plug 32 is provided with a rubber anti-slip layer, so that the pipe plug plays a role in skid resistance and can be better sealed.

Further: the top of the bracket 21 is in a semi-arc shape, and a wire arranging hole 22 is formed in the middle of the pressure measuring structure 2, so that a circuit in the pressure measuring structure 2 can be conveniently connected to an electronic component inside the shell 1.

And further: the pressure guiding structure 5 comprises a pressure guiding top cover 51, a convex block 52, a thread outer sleeve 53, a pressure guiding joint 54 and an anti-skid protrusion 55, the top of the pressure guiding structure 5 is provided with the pressure guiding top cover 51, the pressure guiding top cover 51 is in direct threaded connection with the lower fixing plate 46, the bottom of the pressure guiding top cover 51 is fixed with the pressure guiding joint 54, the outer side of the pressure guiding joint 54 is provided with the thread outer sleeve 53, the bottom of the thread outer sleeve 53 is provided with the anti-skid protrusion 55, the top outside the thread outer sleeve 53 is provided with two groups of convex blocks 52, the pressure guiding joint 54 is protected from being corroded, and the thread outer sleeve 53 can be replaced independently when the thread outer sleeve 53 is corroded.

Further: the joint of the pressure guiding top cover 51 and the lower fixing plate 46 is provided with a sealing ring, and a threaded structure between the pressure guiding top cover 51 and the lower fixing plate 46 is made of rubber materials, so that a good sealing effect is achieved.

And further: the outer surface of the pressure guiding joint 54 is provided with threads, the inner surface of the thread outer sleeve 53 is provided with internal threads matched with the external threads of the pressure guiding joint 54, and the outer part of the thread outer sleeve 53 is provided with mounting threads, so that the pressure guiding joint is convenient to disassemble and mount.

Embodiment 1, as shown in fig. 2 and 5, this embodiment provides a side leakage inspection method, which can periodically monitor the amount of silicone oil in the silicone oil pipe 42, separate the pipe cap 33 from the silicone oil observation pipe 31 by rotating the pipe cap 33, remove the pipe cap 33, draw out the pipe plug 32 inside the silicone oil observation pipe 31, observe the inside of the silicone oil pipe 42 through the silicone oil observation pipe 31, repair the bottom leakage position after the bottom of the silicone oil pipe 42 leaks, and add silicone oil into the silicone oil pipe 42 through the silicone oil observation pipe 31 after the repair is completed.

Embodiment 2, fig. 1, fig. 2, and fig. 4, the present embodiment provides a way to troubleshoot faults, when it is not determined whether the problem is on the pressure measuring structure or the pressure transmitting structure, case 1: after closing the end valve 43 on one set of pressure transfer structures and opening the end valve 43 on the other set of pressure transfer structures, case 2: the reversal is carried out to close the previously opened stop valve 43, the stop valve 43 closed before opening, if neither is working properly, is in the pressure-measuring configuration, if only one is not working, is in the pressure-transmitting configuration, wherein the pressure-transmitting configuration of the opened stop valve 43, in which the stop valve 43 is still in the pressure-transmitting configuration, is malfunctioning.

Embodiment 3, as shown in fig. 2 and fig. 6, provides a replaceable threaded outer sleeve 53, the threaded outer sleeve 53 with a suitable outer diameter can be selected according to the calibers of various installation positions, so that the device can be used under different calibers, the threaded outer sleeve 53 is installed on the surface of the pressure guiding joint 54, then the threaded outer sleeve 53 is fixed at a specified position on a pipeline or a box to be monitored, the main body can be rotated when the whole device needs to be disassembled, the whole device can be removed, if the threaded outer sleeve 53 is not removed at this time, the two hands hold the lug 52 to rotate, so that the threaded outer sleeve 53 is separately removed from the installation position, if the threaded outer sleeve 53 is seriously corroded, the threaded outer sleeve 53 can be directly replaced, other structures of the pressure guiding structure 5 can be continuously used, so that the device can protect the pressure guiding joint 54, and the threaded outer sleeve 53 on the surface of the pressure guiding joint 54 can be separately replaced, thereby saving the cost of replacing fittings.

The working principle is as follows: before use, the device is powered on and installed at a specified position, the monitored liquid reaches the surface of the isolation diaphragm 44 through a through hole in the middle of the pressure guiding joint 54, the isolation diaphragm 44 senses hydraulic pressure, then the liquid is transmitted to the surface of the stop valve 43 through silicon oil in the silicon oil pipe 42, specific pressure is monitored by the pressure sensor 41, the liquid is transmitted to the adapter module 24 through a lead, the liquid is converted into an electric signal, the electric signal is continuously transmitted to the amplifier module 25 to be processed and amplified through the amplifier module 25, so that the electric signal can reach a stable interval, and then the electric signal is transmitted to an instrument connected in the shell, and therefore the pressure value of a detection medium can be measured.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components in the document are electrically connected with an external master controller and 220V mains supply, and the master controller can be a computer or other conventional known devices for playing a role in control.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An intelligent pressure transmitter, its characterized in that: the device comprises a main body bin shell (1), a pressure measuring structure (2), a silicone oil observation structure (3), a pressure transmission structure (4) and a pressure guiding structure (5); the pressure measuring structure (2) is arranged at the bottom of the shell (1), the pressure transmitting structure (4) is connected to the bottom of the pressure measuring structure (2), the silicone oil observing structures (3) are arranged at the top of the outer side of the pressure transmitting structure (4), and the pressure guiding structures (5) are arranged at the bottoms of the two groups of silicone oil observing structures (3);

a front end cover (11) and a rear cover (14) are respectively arranged at two ends of the shell (1), a dial plate mounting seat (12) is arranged at one end, close to the front end cover (11), in the shell (1), and a connecting terminal (13) is arranged at one end, close to the rear cover (14), in the shell (1);

a bracket (21) is arranged at the top of the pressure measuring structure (2), the bracket (21) is fixed with the bottom of the shell (1) through a bolt, an adapter module (24) is arranged at one end inside the pressure measuring structure (2), an amplifier module (25) is arranged at the other end inside the pressure measuring structure (2), and the adapter module (24) is in telecommunication connection with the amplifier module (25) through a wire;

pass and press structure (4) to be provided with two sets ofly respectively, it is two sets of to pass to press structure (4) including silicon oil pipe (42), upper fixed plate (45) are installed jointly to the top of silicon oil pipe (42), and the bottom fixed connection of upper fixed plate (45) and pressure cell (23), two sets of bottom plate (46) are installed jointly to the bottom of silicon oil pipe (42), pressure sensor (41) have all been installed at the top of silicon oil pipe (42), and pressure sensor (41) are fixed on upper fixed plate (45), the bottom of silicon oil pipe (42) is provided with isolation diaphragm (44), isolation diaphragm (44) are fixed on bottom plate (46), termination valve (43) are all installed to the intermediate position department of silicon oil pipe (42), pressure sensor (41) are through wire and adapter module (24) telecommunications connection.

2. The intelligent pressure transmitter of claim 1, wherein: a visible window is arranged in the middle of the front end cover (11).

3. The intelligent pressure transmitter of claim 1, wherein: one side of silicon oil observation structure (3) sets up access door (26), and the four corners department of access door (26) is connected with pressure measurement storehouse (23) through the bolt.

4. The intelligent pressure transmitter of claim 1, wherein: silicon oil is surveyed structure (3) and is surveyed pipe (31), stopcock (32) and pipe cap (33) including silicon oil, silicon oil is surveyed pipe (31) and is fixed at silicon oil pipe (42) outside top, and silicon oil is surveyed pipe (31) and is communicated with silicon oil pipe (42), pipe cap (33) are installed to the top screw thread of silicon oil observation pipe (31), be fixed with stopcock (32) on pipe cap (33), and inside that pipe (31) were surveyed to silicone oil is extended to stopcock (32).

5. The intelligent pressure transmitter of claim 1, wherein: the outer diameter of the pipe plug (32) is the same as the inner diameter of the silicone oil observation pipe (31), and a rubber anti-skid layer is arranged on the surface of the pipe plug (32).

6. The intelligent pressure transmitter of claim 4, wherein: the top of the bracket (21) is semi-arc-shaped, and a wire arrangement hole (22) is formed in the middle of the pressure measuring structure (2).

7. The intelligent pressure transmitter of claim 1, wherein: the pressure guiding structure (5) comprises a pressure guiding top cover (51), a convex block (52), a thread outer sleeve (53), a pressure guiding joint (54) and an anti-skid protrusion (55), the top of the pressure guiding structure (5) is provided with the pressure guiding top cover (51), the pressure guiding top cover (51) is directly in threaded connection with the lower fixing plate (46), the pressure guiding joint (54) is fixed at the bottom of the pressure guiding top cover (51), the thread outer sleeve (53) is arranged on the outer side of the pressure guiding joint (54), the anti-skid protrusion (55) is arranged at the bottom of the thread outer sleeve (53), and the two groups of convex blocks (52) are arranged on the top of the outer side of the thread outer sleeve (53).

8. The intelligent pressure transmitter of claim 7, wherein: a sealing ring is arranged at the joint of the pressure guiding top cover (51) and the lower fixing plate (46), and a threaded structure between the pressure guiding top cover (51) and the lower fixing plate (46) is made of rubber materials.

9. The intelligent pressure transmitter of claim 7, wherein: the outer surface of the pressure guiding joint (54) is provided with threads, the inner surface of the thread outer sleeve (53) is provided with internal threads matched with the external threads of the pressure guiding joint (54), and mounting threads are arranged outside the thread outer sleeve (53).