CN211651920U

CN211651920U - Small and exquisite high-precision differential pressure transmitter

Info

Publication number: CN211651920U
Application number: CN201922461208.4U
Authority: CN
Inventors: 关宇洋; 李莹娟; 关明洋
Original assignee: Shanghai Meixu Measurement And Control Technology Co ltd
Current assignee: Shanghai Meixu Measurement And Control Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-09
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a small and exquisite type high accuracy differential pressure transmitter in the technical field of multifunctional transmitter, which comprises a transmitter body, a display screen, a connecting pipe fitting and a control box, wherein the display screen is fixedly arranged in the middle of the front surface of the transmitter body, a buzzer is fixedly arranged at the top of the left side wall of the transmitter body, the connecting pipe fitting is fixedly arranged at the top of the transmitter body, sealing flanges are fixedly arranged on the left side wall and the right side wall of the connecting pipe fitting, sealing diaphragms are fixedly arranged on the inner side walls of the sealing flanges, a pressure sensor is fixedly arranged at the top of the sealing flanges, the structure is reasonable, the differential pressure measurement and the monitoring of gas and liquid are realized through the matching of the transmitter body, the display, a processor, the pressure sensor and an analog signal converter, and the function of automatic alarm is realized through the matching of the processor and the, through the cooperation of the sealing diaphragm and the voltage stabilizer, the accuracy of differential pressure measurement is improved.

Description

Small and exquisite high-precision differential pressure transmitter

Technical Field

The utility model relates to a multi-functional changer technical field specifically is a small and exquisite type high accuracy differential pressure transmitter.

Background

The pressure transmitter is the most common sensor in industrial practice, is widely applied to various industrial self-control environments, relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production self-control, aerospace, military industry, petrifaction, oil wells, electric power, ships, machine tools, pipelines and the like, mainly comprises a pressure measuring element sensor, a measuring circuit and a process connecting piece, can convert physical pressure parameters such as gas, liquid and the like sensed by a pressure sensing element into standard electric signals, to supply secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like for measurement, indication and process regulation, one of the core components of the pressure sensitive element foot transmitter is a common sensitive element which is a resistance strain gauge and is a sensitive device for converting the pressure on a measured piece into an electric signal in an alternating mode. The resistance strain gauge is mainly applied to a metal resistance strain gauge and a semiconductor strain gauge, the metal resistance strain gauge and the semiconductor strain gauge have the defects of low common sensitivity, directional effect, mechanical lag, zero drift and creeping, low H fatigue life and the like compared with the metal resistance strain gauge and the semiconductor strain gauge, the semiconductor strain gauge has the remarkable advantages of large sensitivity coefficient and sensitivity 25-100 times that of the golden anode strain gauge; the defects are enough to ensure that the coefficient of mixture of resistance is human, the sensitivity coefficient changes along with the temperature, and the linear relation between the strain and the resistance is small.

The existing transmitter has some defects, such as inaccurate measurement and incapability of remote monitoring, so that a novel high-precision differential pressure transmitter needs to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small and exquisite type high accuracy differential pressure transmitter to solve the accurate and unable remote real time monitoring's of the measuring part problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a small and exquisite type high accuracy differential pressure transmitter, includes changer body, display screen, connects pipe fitting and control box, fixed mounting has the connecting wire in the middle of the changer body bottom, connecting wire bottom fixed mounting has waterproof plug, fixed mounting has the display screen in the middle of the changer body front surface, changer body left side wall top fixed mounting has bee calling organ, changer body top fixed mounting has the connecting pipe fitting, the equal fixed mounting of connecting pipe fitting left side wall and right side wall has sealing flange, the inboard lateral wall fixed mounting of sealing flange has sealing diaphragm, sealing flange top fixed mounting has pressure sensor, and pressure sensor's test probe extends to sealing flange's inner chamber, fixed mounting has the control box in the middle of the connecting pipe fitting top, the inner chamber of control box is fixed mounting respectively has treater, Stabiliser, analog signal converter and signal transmission module, treater electrical property input connection stabiliser, stabiliser electrical property input connection analog signal converter, analog signal converter electrical property input connection pressure sensor, treater electrical output connects signal transmission module, signal transmission module electrical output connects handheld terminal, treater electrical connection display screen, treater electrical connection bee calling organ.

Preferably, the transmitter body is made of aluminum alloy.

Preferably, the sealing diaphragm is made of an anti-corrosion material.

Preferably, the handheld terminal is a mobile phone or a tablet computer.

Preferably, the pressure sensor is a MEMS high-sensitivity monocrystalline silicon pressure sensing chip.

Compared with the prior art, the beneficial effects of the utility model are that: through this setting of small and exquisite type high accuracy differential pressure transmitter, structural design is reasonable, through the cooperation of changer body, a display, a processor, pressure sensor and analog signal converter, realized differential pressure measurement and control to gaseous liquid, through the cooperation of treater and bee calling organ, automatic alarm's function has been realized, through the treater, the cooperation of signaling module and handheld terminal, real-time remote monitoring has been realized, through the cooperation of sealed diaphragm and stabiliser, differential pressure measurement's precision has been increased.

Drawings

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

fig. 2 is a system block diagram of the present invention.

In the figure: 100 transmitter body, 110 connecting wires, 120 waterproof plug, 200 display screen, 210 buzzer, 300 connecting pipe, 310 sealing flange, 320 pressure sensor, 330 sealing diaphragm, 400 control box, 410 processor, 420 voltage stabilizer, 430 analog signal converter, 440 signal sending module and 450 hand-held terminal.

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.

The utility model provides a following technical scheme: a small and exquisite high-precision differential pressure transmitter, in the use process, the differential pressure measurement is more accurate, and the differential pressure transmitter has the functions of alarming and remote real-time monitoring, please refer to fig. 1 and fig. 2, and comprises a transmitter body 100, a display screen 200, a connecting pipe fitting 300 and a control box 400;

referring to fig. 1 again, a connecting wire 110 is fixedly installed in the middle of the bottom of the transmitter body 100, and a waterproof plug 120 is fixedly installed at the bottom of the connecting wire 110, specifically, the connecting wire 110 is inserted in the middle of the bottom of the transmitter body 100, the waterproof plug 120 is screwed on the bottom of the connecting wire 110, the connecting wire 110 is used for electrifying the transmitter, and the waterproof plug 120 is used for increasing the safety and prolonging the service life;

referring to fig. 1 again, a display screen 200 is fixedly installed in the middle of the front surface of the transmitter body 100, a buzzer 210 is fixedly installed at the top of the left sidewall of the transmitter body 100, specifically, the display screen 200 is screwed in the middle of the front surface of the transmitter body 100, the buzzer 210 is screwed in the top of the left sidewall of the transmitter body 100, the display is used for displaying differential pressure data, and the buzzer 210 is used for giving an alarm when the differential pressure exceeds a preset value;

referring to fig. 1 again, a connection pipe 300 is fixedly installed on the top of the transmitter body 100, sealing flanges 310 are fixedly installed on both left and right sidewalls of the connection pipe 300, sealing diaphragms 330 are fixedly installed on inner sidewalls of the sealing flanges 310, a pressure sensor 320 is fixedly installed on the top of the sealing flanges 310, and a sensing probe of the pressure sensor 320 extends to an inner cavity of the sealing flange 310, specifically, the connection pipe 300 is welded on the top of the transmitter body 100, the sealing flanges 310 are screwed on both left and right sides of the connection pipe 300, the sealing diaphragms 330 are adhered to inner sidewalls of the sealing flanges 310, the pressure sensor 320 is screwed on the top of the sealing flanges 310, and a sensing probe of the pressure sensor 320 extends to the inner cavity of the sealing flanges 310, the connection pipe 300 is used for bearing the sealing flanges 310 and the control box 400, the sealing flanges 310 are used for connecting pipes for measuring, the sealing diaphragm 330 is used for improving the sealing performance and preventing air leakage from interfering with the accuracy of measurement data, and the pressure sensor 320 is an MEMS high-sensitivity monocrystalline silicon pressure sensing chip and is used for measuring pressure; referring to fig. 1 and fig. 2 again, the middle of the top of the connecting tube 300 is fixedly installed with a control box 400, the inner cavity of the control box 400 is fixedly installed with a processor 410, a voltage stabilizer 420, an analog signal converter 430 and a signal transmitting module 440 respectively, the processor 410 is electrically connected with the voltage stabilizer 420, the voltage stabilizer 420 is electrically connected with the analog signal converter 430, the analog signal converter 430 is electrically connected with a pressure sensor 320, the processor 410 is electrically connected with the signal transmitting module 440, the signal transmitting module 440 is electrically connected with a handheld terminal 450, the processor 410 is electrically connected with the display screen 200, the processor 410 is electrically connected with the buzzer 210, specifically, the control box 400 is adhered to the middle of the top of the connecting tube 300, the processor 410, the voltage stabilizer 420, the analog signal converter 430 and the signal transmitting module 440 are adhered to the inner cavity of the control box 400 respectively, the processor 410 is electrically connected with the, the regulator 420 is electrically connected with the analog signal converter 430 in an input mode, the analog signal converter 430 is electrically connected with the pressure sensor 320 in an input mode, the processor 410 is electrically connected with the signal sending module 440 in an output mode, the signal sending module 440 is electrically connected with the handheld terminal 450 in an output mode, the processor 410 is electrically connected with the display screen 200, the processor 410 is electrically connected with the buzzer 210, the control box 400 is used for carrying electronic elements such as the processor 410 and preventing the electronic elements from being damaged by moisture and corrosion, the processor 410 is an ATmega164P circuit chip in a model and used for receiving and decoding circuit signals of the pressure sensor 320, the regulator 420 is a 1N4727 voltage stabilizing diode in a model and used for stabilizing the circuit signals and increasing the accuracy of measurement, the analog signal converter 430 is an RGA309 in a model and used for converting the circuit signals sent by the pressure sensor 320 into analog signals recognizable by the processor 410, the signal sending module 440 is an RC-R04, for transmitting wireless signals, and the handheld terminal 450 is used for receiving wireless signals and monitoring in real time.

The working principle is as follows: in the process of transmitter use, through the cooperation of transmitter body 100, display screen 200, treater 410, pressure sensor 320 and analog signal converter 430, realized differential pressure measurement and control to gaseous liquid, through the cooperation of treater 410 and bee calling organ 210, realized automatic alarm's function, through the cooperation of treater 410, signaling module 440 and handheld terminal 450, realized real-time remote monitoring, through the cooperation of sealed diaphragm 330 and stabiliser 410, increased differential pressure measurement's precision.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a small and exquisite type high accuracy differential pressure transmitter which characterized in that: including changer body (100), display screen (200), connection pipe fitting (300) and control box (400), fixed mounting has connecting wire (110) in the middle of changer body (100) bottom, connecting wire (110) bottom fixed mounting has waterproof plug (120), fixed mounting has display screen (200) in the middle of changer body (100) front surface, changer body (100) left side wall top fixed mounting has bee calling organ (210), changer body (100) top fixed mounting has connection pipe fitting (300), connect the equal fixed mounting of pipe fitting (300) left side wall and right side wall has sealing flange (310), sealing flange (310) inboard lateral wall fixed mounting has sealing diaphragm (330), sealing flange (310) top fixed mounting has pressure sensor (320), just the test probe of pressure sensor (320) extends to the inner chamber of sealing flange (310), fixed mounting has control box (400) in the middle of connecting pipe fitting (300) top, the inner chamber of control box (400) fixed mounting has treater (410), stabiliser (420), analog signal converter (430) and signal transmission module (440) respectively, treater (410) electrical property input connection stabiliser (420), stabiliser (420) electrical property input connection analog signal converter (430), analog signal converter (430) electrical property input connection pressure sensor (320), treater (410) electrical property output connection signal transmission module (440), signal transmission module (440) electrical property output connection handheld terminal (450), treater (410) electrical connection display screen (200), treater (410) electrical connection bee calling organ (210).

2. A compact, high-precision differential pressure transmitter according to claim 1, characterized in that: the transmitter body (100) is made of aluminum alloy.

3. A compact, high-precision differential pressure transmitter according to claim 1, characterized in that: the sealing diaphragm (330) is made of an anti-corrosion material.

4. A compact, high-precision differential pressure transmitter according to claim 1, characterized in that: the handheld terminal (450) is a mobile phone or a tablet computer.

5. A compact, high-precision differential pressure transmitter according to claim 1, characterized in that: the pressure sensor (320) is an MEMS high-sensitivity monocrystalline silicon pressure sensing chip.