CN214200473U

CN214200473U - Pressure transmitter

Info

Publication number: CN214200473U
Application number: CN202120608587.XU
Authority: CN
Inventors: 张承旭
Original assignee: Hefei Kerun Intelligent Technology Co ltd
Current assignee: Hefei Kerun Intelligent Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-09-14
Anticipated expiration: 2031-03-25

Abstract

The utility model relates to the technical field of industrial automation instruments, in particular to a pressure transmitter, which comprises an upper connecting piece, a main cavity and a lower connecting piece, wherein a processor is arranged in the upper connecting piece; an internal thread matched with the second threaded port is arranged in the first connecting bulge of the main cavity, a connecting thread is arranged on the inner wall of the lower end of the cylinder, a protective layer is arranged on the outer wall of the main cavity, a pressure measuring assembly consisting of a measuring diaphragm and electrode plates respectively arranged on two sides of the measuring diaphragm is arranged in the main cavity, and electrode ends connected with the processor through wires are arranged at the top ends of the electrode plates; the top thread opening of the lower connecting piece is matched with the connecting thread, the bottom thread opening is matched with an external connecting pipeline, and the center of the bottom thread opening is a connector. The utility model has the advantages of simple integral structure, the installation is convenient with the dismantlement, is favorable to maintenance and change equipment, and can improve the degree of accuracy of conveying.

Description

Pressure transmitter

Technical Field

The utility model relates to an industrial automation instrument technical field, concretely relates to pressure transmitter.

Background

A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. It can convert the physical pressure parameters sensed by the load cell sensor into standard electric signals for the secondary instruments such as indicating alarm, recorder and regulator to measure, indicate and regulate the process. The pressure transmitter has the characteristics of reliable work, high accuracy, stable performance, small volume, light weight and the like, is the most common sensor in industrial practice, and is widely applied to various industries.

However, the structure of the current pressure transmitter is complex, and the pressure transmitter is easy to damage in the using process and difficult to disassemble, which brings certain difficulty to maintenance.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned current field exists, the utility model aims at providing a simple structure, dismantle convenient, the pressure transmitter of easily maintenance. In order to realize the purpose of the utility model, the following technical scheme is adopted:

pressure transmitter, comprising

The upper connecting piece is of a hollow structure with an opening at the lower end, a processor is arranged in the upper connecting piece, a limiting hole is formed in one side of the upper connecting piece, a transmission line interface is connected with the limiting hole in a threaded manner, a first threaded port is formed in one side, close to the upper connecting piece, of the transmission line interface, and a second threaded port is formed in the lower side of the upper connecting piece;

the main body cavity is composed of a first connecting bulge and a cylinder body fixed at the lower end of the first connecting bulge, internal threads are arranged in the first connecting bulge and matched with the second threaded opening, and connecting threads are arranged on the inner wall of the lower end of the cylinder body; the outer wall of the main body cavity is provided with a protective layer, a pressure measuring assembly is arranged in the main body cavity and comprises a measuring diaphragm and electrode plates arranged on two sides of the measuring diaphragm respectively, the top ends of the electrode plates are provided with electrode ends, the electrode ends are connected with a processor in the upper connecting piece through leads, and the outer sides of the electrode plates are provided with isolating diaphragms; and

lower connecting piece, lower connecting piece comprises second connection arch, top screw thread mouth and bottom screw thread mouth, just the top screw thread mouth is fixed in the bellied top of second connection, top screw thread mouth and connecting thread phase-match, the bottom screw thread mouth is fixed in the bellied below of second connection, the central authorities of bottom screw thread mouth are the interface, just bottom screw thread mouth and external connection pipeline phase-match.

Preferably, a first sealing ring is arranged at the joint of the second threaded port and the first connecting protrusion.

Preferably, a second sealing ring is arranged at the joint of the connecting thread and the top end thread opening.

Preferably, the sealing ring is a rubber ring.

Preferably, a connecting pad is arranged on the bottom end thread port.

Preferably, the protective layer is made of plastic material.

Preferably, silicone oil is filled between the two electrode plates.

Preferably, insulating oil is filled between the electrode plate and the isolation diaphragm.

Compared with the prior art, the beneficial effects of the utility model are that: the pressure transmitter of the utility model has simple integral structure, convenient installation and disassembly and is beneficial to maintaining and replacing equipment; and the accuracy of conveying can be improved due to the arrangement of the pressure measuring assembly.

Drawings

Fig. 1 is a schematic view of an assembled overall structure of a pressure transmitter of the present invention;

fig. 2 is a schematic view of a front view structure of the pressure measuring assembly of the present invention;

fig. 3 is a schematic view of the overall structure of the disassembled pressure transmitter of the present invention;

in the figure, 1-upper connecting piece, 2-main body cavity, 201-first connecting bulge, 202-barrel, 203-connecting thread, 3-lower connecting piece, 301-second connecting bulge, 302-top thread port, 303-bottom thread port, 4-transmission line interface, 5-limiting hole, 6-first thread port, 7-processor, 8-second thread port, 9-first sealing ring, 10-second sealing ring, 11-interface, 12-connecting pad, 13-pressure measuring component, 14-protective layer, 15-electrode plate, 16-measuring diaphragm, 17-electrode end, 18-silicon oil, 19-insulating oil and 20-isolating diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 is the utility model relates to an overall structure schematic diagram of pressure transmitter after assembly to combine fig. 2 and fig. 3, can see out from it, the utility model discloses a pressure transmitter, including lower extreme opening and hollow structure's last connecting piece 1, be equipped with treater 7 in it, be equipped with spacing hole 5 in one side of last connecting piece 1, can threaded connection transmission line interface 4, one side that transmission line interface 4 is close to last connecting piece 1 is equipped with first screw thread mouth 6, and the downside of going up connecting piece 1 is equipped with second screw thread mouth 8.

The sealing device comprises a main body cavity 2 consisting of a first connecting bulge 201 and a cylinder 202 fixed at the lower end of the first connecting bulge 201, wherein an internal thread matched with a second threaded port 8 is arranged in the first connecting bulge 201, a first sealing ring 9 is arranged at the joint of the second threaded port 8 and the first connecting bulge 201, the sealing ring is a rubber ring to improve the sealing property of the main body cavity, a connecting thread 203 is arranged on the inner wall of the lower end of the cylinder 202, a protective layer 14 is arranged on the outer wall of the main body cavity 2, the protective layer 14 is made of plastic materials, the main body cavity is prevented from being damaged due to collision, and the service life of the main body cavity is prolonged; be equipped with pressure measurement subassembly 13 in main part cavity 2, this pressure measurement subassembly 13 is including measuring diaphragm 16 and setting up the plate electrode 15 in measuring diaphragm 16 both sides respectively, it has silicon oil 18 to fill between two plate electrode 15, and the top of plate electrode 15 is equipped with electrode tip 17, and it is connected with treater 7 in the last connecting piece 1 through the wire, is equipped with diaphragm 20 in the outside of plate electrode, and it has insulating oil 19 to fill between plate electrode 15 and the diaphragm 20, plays certain isolated and guard action.

The lower connecting piece 3 is composed of a second connecting bulge 301, a top end screw thread hole 302 and a bottom end screw thread hole 303, wherein the top end screw thread hole 302 is fixed above the second connecting bulge 301, and the bottom end screw thread hole 303 is fixed below the second connecting bulge 301; wherein, top thread mouth 302 and connecting thread 203 phase-match, and connecting thread 203 is equipped with second sealing washer 10 with top thread mouth 302 junction, and this sealing washer is the rubber circle, improves the gas tightness of device, and the central authorities of bottom thread mouth 303 are interface 11, and bottom thread mouth 303 and external connection pipeline phase-match are equipped with connection pad 12 on the bottom thread mouth 303 to improve the leakproofness of junction.

During use, the processor is installed in the upper connecting piece and connected with corresponding lines, and the pipeline is connected with an external power supply and a processing device through a transmission line interface in threaded connection on the limiting hole to ensure normal work of the processor; then the second threaded port and the first connecting bulge on the main body cavity, the connecting thread and the top threaded port on the lower connecting piece are connected, and a first sealing ring and a second sealing ring are respectively arranged at the connecting positions so as to improve the air tightness of the connection and ensure that an electrode end on a pressure measuring component in the main body cavity is connected with a processor through a lead so as to ensure that the pressure measuring component can normally work; and then, connecting the whole device to an external pipeline through an interface to measure pressure, transmitting a corresponding measurement result and finally finishing pressure transmission detection.

As can be seen from the above embodiments of the present invention, the pressure transmitter of the present invention has a simple overall structure, is convenient to install and disassemble, and is beneficial to maintenance and replacement of equipment; and the accuracy of conveying can be improved due to the arrangement of the pressure measuring assembly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can understand the changes or substitutions within the technical scope of the present invention, and the protection scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. Pressure transmitter, its characterized in that: comprises that

The connecting piece comprises an upper connecting piece (1), wherein the upper connecting piece (1) is of a hollow structure with an opening at the lower end, a processor (7) is arranged in the upper connecting piece (1), a limiting hole (5) is formed in one side of the upper connecting piece (1), a transmission line interface (4) is connected with the limiting hole (5) in a threaded manner, a first threaded hole (6) is formed in one side, close to the upper connecting piece (1), of the transmission line interface (4), and a second threaded hole (8) is formed in the lower side of the upper connecting piece (1);

the main body cavity (2) is composed of a first connecting bulge (201) and a cylinder body (202) fixed at the lower end of the first connecting bulge (201), an internal thread is arranged in the first connecting bulge (201) and matched with the second threaded opening (8), and a connecting thread (203) is arranged on the inner wall of the lower end of the cylinder body (202); the outer wall of the main body cavity (2) is provided with a protective layer (14), a pressure measuring assembly (13) is arranged in the main body cavity (2), the pressure measuring assembly (13) comprises a measuring diaphragm (16) and electrode plates (15) respectively arranged on two sides of the measuring diaphragm (16), the top ends of the electrode plates (15) are provided with electrode ends (17), the electrode ends (17) are connected with a processor (7) in the upper connecting piece (1) through leads, and the outer sides of the electrode plates are provided with isolating diaphragms (20); and

lower connecting piece (3), lower connecting piece (3) comprises second connection protrusion (301), top thread mouth (302) and bottom thread mouth (303), just top thread mouth (302) are fixed in the top of second connection protrusion (301), top thread mouth (302) and connecting thread (203) phase-match, the below at second connection protrusion (301) is fixed in bottom thread mouth (303), the central authorities of bottom thread mouth (303) are interface (11), just bottom thread mouth (303) and external connection pipeline phase-match.

2. The pressure transmitter of claim 1, wherein: and a first sealing ring (9) is arranged at the joint of the second threaded opening (8) and the first connecting bulge (201).

3. The pressure transmitter of claim 1, wherein: and a second sealing ring (10) is arranged at the joint of the connecting thread (203) and the top end thread opening (302).

4. The pressure transmitter of claim 2 or 3, wherein: the sealing ring is a rubber ring.

5. The pressure transmitter of claim 1, wherein: and a connecting pad (12) is arranged on the bottom end thread opening (303).

6. The pressure transmitter of claim 1, wherein: the protective layer (14) is made of plastic materials.

7. The pressure transmitter of claim 1, wherein: silicone oil (18) is filled between the two electrode plates (15).

8. The pressure transmitter of claim 1, wherein: insulating oil (19) is filled between the electrode plate (15) and the isolation diaphragm (20).