Multi-parameter flow transmitter

Abstract

The invention discloses a multi-parameter flow transmitter, and relates to the field of metering instruments, the multi-parameter flow transmitter comprises a sensor, an information processing module and an energy supply module, the energy supply module comprises a mounting side plate, an energy supply battery is fixedly mounted on one side of the mounting side plate, and the output end of the energy supply battery is electrically connected with a power line; the power line is electrically connected with the information processing module, a metal plate protection box is fixedly mounted on one side of the mounting side plate, and heat dissipation holes are evenly formed in one side of the metal plate protection box. According to the multi-parameter flow transmitter, the information processing module and the energy supply module are separated and isolated, the energy supply module is installed in a stable and safe environment, the situation that a power supply is affected with damp and is short-circuited or corroded by the external environment is avoided, and therefore the stability and anti-interference performance of the multi-parameter flow transmitter are improved.

Description

Technical Field

[0001] The invention relates to the technical field of metering instruments, in particular to a multi-parameter flow transmitter. Background Art

[0002] A flow transmitter is an instrument used to measure fluid flow. It can convert flow information into electrical signal output for monitoring and control. A multi-parameter flow transmitter is an advanced flow measurement device that integrates multiple sensors and computing functions. It can provide more comprehensive and accurate flow data. It usually integrates differential pressure sensors, static pressure sensors and temperature sensors. These sensors work together to monitor multiple parameters such as fluid pressure and temperature in real time.

[0003] For example, a multi-parameter integrated flow meter with a Chinese patent publication number of CN212513182U includes a three-valve group, a connector, a pressure interface, a protective tube, a total pressure hole, a static pressure hole, a differential pressure transmitter, a pressure transmitter, a thermal resistance thermometer, and a flow integrator. A connecting section is symmetrically arranged at the lower end of the three-valve group, the upper end of the connecting section is fixedly connected to the connector by bolts, the lower end of the connecting section is fixed to the connector, a circular pressure interface is fixedly opened on the end surface of the connector, the pressure interface is fixedly connected to the pressure transmitter by welding, the upper end of the three-valve group is screwed and fixedly connected to the differential pressure transmitter, the differential pressure transmitter is communicated with the three-valve group, the lower end of the connector is fixedly connected to the pressure probe tube by welding, the pressure probe tube is a cylindrical tube, and two round hole pipe sleeves are fixedly provided in the pressure probe tube.

[0004] However, in the prior art, when the existing flow transmitter detects the fluid flow inside the pipeline, the external environment will have a certain impact on the power supply, such as the power supply being short-circuited due to moisture or the power supply being corroded and damaged, causing the existing flow transmitter to be unable to work normally due to unstable power supply. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-parameter flow transmitter to solve the problem that the external environment may have a certain impact on the power supply, causing the existing flow transmitter to be unable to work normally due to unstable power supply.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-parameter flow transmitter, comprising: a sensor, an information processing module and an energy supply module, the energy supply module comprising an installation side panel, a power supply battery is fixedly installed on one side of the installation side panel, the output end of the energy supply battery is electrically connected to a power line, the power line is electrically connected to the information processing module, a sheet metal protection box is fixedly installed on one side of the installation side panel, and heat dissipation holes are evenly opened on one side of the sheet metal protection box, the information processing module comprises an installation bin, a display instrument, an oscillation regulator, an A / D signal converter, an optocoupler isolator, a microprocessor, a D / A signal converter, a power isolation transformer and a communication module, the output end of the power line is electrically connected to the power isolation transformer, the information processing module and the energy supply module are separated and isolated to prevent the external environment from causing moisture, short circuit or corrosion to the power supply, thereby improving the stability and anti-interference of the multi-parameter flow transmitter.

[0007] Preferably, the sensor includes a detection chamber, a central measuring diaphragm is arranged at the center of the detection chamber, one end of the central measuring diaphragm is electrically connected to the central measuring diaphragm wire, capacitor plates are arranged on both sides of the central measuring diaphragm, one end of the two capacitor plates is electrically connected to the capacitor wire, both ends of the detection chamber are fixedly connected with an isolation diaphragm, the interior of the detection chamber is filled with filling liquid, and the upper end of the inner side of the detection chamber is filled with potting glue, wherein the function of the potting glue is to isolate the filling liquid to prevent it from flowing out through the upper end of the detection chamber.

[0008] Preferably, the outer sides of one ends of the central measuring diaphragm wire and the capacitor wire are arranged inside the potting glue, wherein the potting glue can also fix and limit the central measuring diaphragm wire and the capacitor wire to avoid shaking.

[0009] Preferably, the output end of the central measuring diaphragm wire is electrically connected to the input end of the oscillation moderator, and the output end of the capacitor wire is electrically connected to the input end of the oscillation moderator. The central measuring diaphragm transmits the collected data to the interior of the oscillation moderator through the central measuring diaphragm wire, and the capacitor plate inputs the collected data to the interior of the oscillation moderator through the capacitor wire.

[0010] Preferably, a mounting ring is fixedly connected to one side of the detection chamber, a thermistor is fixedly installed through the upper end of the mounting ring, the output end of the thermistor is electrically connected to the input end of the A / D signal converter, and the main function of the thermistor is to collect temperature data of the fluid.

[0011] Preferably, one side of the mounting ring is annularly threaded with a plurality of mounting bolts, and one end of the plurality of mounting bolts is threadedly connected with a guide bin, and the main function of the guide bin is to guide the fluid to be detected into one side of the isolation diaphragm and allow the thermistor to measure the temperature of the fluid.

[0012] Preferably, a mounting bracket is symmetrically fixedly connected to one side of the mounting side panel, and a turntable is rotatably clamped on the inner side of the two mounting brackets, and the power cord is wrapped around the outer side of the turntable, wherein the main function of the turntable is to store redundant power cords to avoid the redundant power cords being arbitrarily placed between the sensor and the information processing module, thereby improving the efficiency of the installer in installing the multi-parameter flow transmitter.

[0013] Preferably, a wire outlet hole is provided on one side of the mounting frame, and the power cord is movably connected inside the wire outlet hole, wherein the main function of the wire outlet hole is to provide certain guidance and constraints to the power cord so that the outer side of one end thereof can fit on one side of the mounting frame.

[0014] Preferably, the power cord is movably inserted into one side of the installation bin, and the display instrument is fixedly installed at the upper end of the installation bin. The display instrument covers the upper end of the installation bin, thereby achieving a certain sealing effect. A sealing gasket is installed near the penetration opening of the power cord and the installation bin, which can further improve the sealing of the installation bin.

[0015] Preferably, the oscillation modulator, A / D signal converter, optocoupler isolator, microprocessor, D / A signal converter, power isolation transformer and communication module are all fixedly installed inside the installation bin. By installing the oscillation modulator, A / D signal converter, optocoupler isolator, microprocessor, D / A signal converter, power isolation transformer and communication module inside the installation bin, it is convenient for maintenance personnel to repair the above-mentioned electrical components. At the same time, the installation bin can provide certain protection for the oscillation modulator, A / D signal converter, optocoupler isolator, microprocessor, D / A signal converter, power isolation transformer and communication module to avoid certain damage caused by the external environment.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the information processing module and the energy supply module are separated and isolated, and the energy supply module is installed in a stable and safe environment to avoid the external environment causing moisture, short circuit or corrosion to the power supply, thereby improving the stability and anti-interference of the multi-parameter flow transmitter.

[0017] 2. In the present invention, the pressure and temperature data of the fluid in the pipeline are measured through the cooperation between the central measuring diaphragm, the capacitor plate and the thermistor, so that the multi-parameter flow transmitter can collect the temperature and pressure data of the fluid, thereby comprehensively measuring the physical data of the fluid in the pipeline.

[0018] 3. In the present invention, the power cord is constrained by the cooperation between the turntable and the wire outlet hole, so that during the installation of the power cord, the redundant length of the power cord is stored and wound on the turntable, and passes through the wire outlet hole from the inside of the mounting frame to the outside of the mounting frame, thereby avoiding the redundant power cord from being arbitrarily placed between the sensor and the information processing module, thereby improving the efficiency of the installer in installing the multi-parameter flow transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-parameter flow transmitter of the present invention; Figure 2 It is a structural schematic diagram of the energy supply module in the multi-parameter flow transmitter of the present invention; Figure 3 It is a structural schematic diagram of the information processing module in the multi-parameter flow transmitter of the present invention; Figure 4 It is a first structural schematic diagram of a sensor in a multi-parameter flow transmitter of the present invention; Figure 5 It is a structural schematic diagram of a thermistor in the multi-parameter flow transmitter of the present invention; Figure 6 It is a second structural schematic diagram of the sensor in the multi-parameter flow transmitter of the present invention; Figure 7 It is a schematic diagram of the internal structure of the sensor in the multi-parameter flow transmitter of the present invention; Figure 8 The figure is a schematic diagram of the connection relationship between the central measuring diaphragm wire, the capacitor wire and the potting glue in the multi-parameter flow transmitter of the present invention.

[0020] In the figure: 1. sensor; 11. detection chamber; 111. isolation diaphragm; 112. mounting ring; 113. thermistor; 114. potting glue; 115. mounting bolts; 116. flow guide chamber; 12. center measuring diaphragm; 121. center measuring diaphragm wire; 13. capacitor plate; 131. capacitor wire; 14. filling liquid; 2. information processing module; 21. mounting chamber; 22. display instrument; 23. oscillation regulator; 24. A / D signal converter; 25. optocoupler isolator; 26. microprocessor; 27. D / A signal converter; 28. power isolation transformer; 281. communication module; 3. power supply module; 31. mounting side panel; 311. mounting frame; 312. turntable; 313. outlet hole; 32. power supply battery; 33. power cord; 34. sheet metal protection box; 341. heat dissipation hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1 Reference Figure 1-4 As shown: a multi-parameter flow transmitter, comprising: a sensor 1, an information processing module 2 and an energy supply module 3, the energy supply module 3 comprising an installation side panel 31, a power supply battery 32 being fixedly mounted on one side of the installation side panel 31, an output end of the power supply battery 32 being electrically connected to a power line 33, the power line 33 being electrically connected to the information processing module 2, a sheet metal protection box 34 being fixedly mounted on one side of the installation side panel 31, heat dissipation holes 341 being evenly opened on one side of the sheet metal protection box 34, the information processing module 2 comprising an installation bin 21, a display instrument 22, an oscillation regulator 23, an A / D signal converter 24, an optocoupler isolator 25, a microprocessor 26, a D / A signal converter 27, a power isolation transformer 28 and a communication module 281, the output end of the power line 33 being electrically connected to the power isolation transformer 28.

[0023] In this embodiment, when installing the multi-parameter flow transmitter, first fix one end of the sensor 1 on the outside of the pipe to be measured, then install the energy supply module 3 in a safe and stable environment, and fix one end of the power cord 33 on the output end of the energy supply battery 32. Then, pass the other end of the power cord 33 through the wire outlet of the sheet metal protection box 34 and connect it to the input end of the power isolation transformer 28. The information processing module 2 and the energy supply module 3 are separated and isolated to prevent the external environment from causing moisture, short circuit or corrosion to the power supply, thereby improving the stability and anti-interference of the multi-parameter flow transmitter.

[0024] Embodiment 2 Figure 1-8As shown, the information processing module 2 includes an installation chamber 21, a display instrument 22, an oscillation regulator 23, an A / D signal converter 24, an optical coupler isolator 25, a microprocessor 26, a D / A signal converter 27, a power isolation transformer 28 and a communication module 281. The output end of the power line 33 is electrically connected to the power isolation transformer 28. The sensor 1 includes a detection chamber 11. A central measuring diaphragm 12 is arranged at the center of the detection chamber 11. One end of the central measuring diaphragm 12 is electrically connected to a central measuring diaphragm wire 121. Capacitor plates 13 are arranged on both sides of the central measuring diaphragm 12. One end of the two capacitor plates 13 is electrically connected to a capacitor wire 131. Both ends of the detection chamber 11 are fixedly connected to an isolation diaphragm 111. The interior of the detection chamber 11 is filled with a filling liquid 14. The upper end of the inner side of the detection chamber 11 is filled with a potting glue 114. The outer sides of one end of the central measuring diaphragm wire 121 and the capacitor wire 131 are arranged inside the potting glue 114. The output end of the measuring diaphragm wire 121 is electrically connected to the input end of the oscillation moderator 23, the output end of the capacitor wire 131 is electrically connected to the input end of the oscillation moderator 23, the upper end of the mounting ring 112 is penetrated and fixedly installed with a thermistor 113, the output end of the thermistor 113 is electrically connected to the input end of the A / D signal converter 24, the oscillation moderator 23, the A / D signal converter 24, the optocoupler isolator 25, the microprocessor 26, the D / A signal converter 27, the power isolation transformer 28 and the communication module 281 are all fixedly installed inside the mounting bin 21, one side of the detection bin 11 is fixedly connected with the mounting ring 112, the upper end of the mounting ring 112 is penetrated and fixedly installed with a thermistor 113, the output end of the thermistor 113 is electrically connected to the input end of the A / D signal converter 24, one side of the mounting ring 112 is annularly threaded with a plurality of mounting bolts 115, and one end of the plurality of mounting bolts 115 is threadedly connected with a guide bin 116.

[0025] In this embodiment, when the sensor 1 measures the physical data of the fluid inside the pipeline, the fluid first enters the inside of the guide chamber 116, and then enters the inside of the mounting ring 112. The thermistor 113 measures the temperature data of the fluid. The voltage signal of the thermistor 113 directly enters the A / D signal converter 24. The fluid squeezes the isolation diaphragm 111, and the pressure is transmitted to the central measuring diaphragm 12 through the conduction of the filling liquid 14. The central measuring diaphragm 12 is a tensioned elastic element, which forms a differential capacitor with the capacitor plates 13 on both sides. The central measuring diaphragm 12 produces displacement deformation and forms a capacitance difference signal on the capacitor plates 13. The capacitance difference signal is transmitted to the inside of the oscillation regulator 23. The voltage signal of the thermistor 113 and the signal processed by the oscillation modulator 23 are superimposed and converted into a conforming digital signal by the A / D signal converter 24, and then isolated and processed by the optical coupler isolator 25 and enter the microprocessor 26 for digital processing. The composite digital signal processed by the microprocessor 26 enters the D / A signal converter 27, and is converted into a loop DC signal after being processed by the D / A signal converter 27. Finally, it is output to the control system through the power isolation transformer 28 for processing and displayed by the display instrument 22, so that the multi-parameter flow transmitter can collect the temperature and pressure data of the fluid, thereby comprehensively measuring the physical data of the fluid in the pipeline.

[0026] Embodiment 3 according to Figure 1-3 As shown, the energy supply module 3 includes an installation side panel 31, and an energy supply battery 32 is fixedly installed on one side of the installation side panel 31. The output end of the energy supply battery 32 is electrically connected to a power line 33, and the power line 33 is electrically connected to the information processing module 2. A sheet metal protection box 34 is fixedly installed on one side of the installation side panel 31, and heat dissipation holes 341 are evenly opened on one side of the sheet metal protection box 34. A mounting frame 311 is symmetrically fixedly connected to one side of the installation side panel 31, and a turntable 312 is rotatably connected to the inner sides of the two mounting frames 311. The power line 33 is wrapped around the outer side of the turntable 312, and a wire outlet hole 313 is opened on one side of the installation frame 311. The power line 33 is movably connected to the inside of the wire outlet hole 313. The power line 33 movably passes through one side of the installation bin 21, and the display instrument 22 is fixedly installed on the upper end of the installation bin 21.

[0027] In this embodiment, during the installation of the power cord 33, the redundant length of the power cord 33 is stored and wound around the turntable 312, and passes through the outlet hole 313 from the inside of the mounting frame 311 to the outside of the mounting frame 311, thereby preventing the redundant power cord 33 from being placed arbitrarily between the sensor 1 and the information processing module 2, thereby improving the efficiency of the installer in installing the multi-parameter flow transmitter.

[0028] The use method and working principle of the device: When installing the multi-parameter flow transmitter, first fix one end of the sensor 1 on the outside of the pipe to be measured, then install the energy supply module 3 in a safe and stable environment, and after fixing one end of the power cord 33 on the output end of the energy supply battery 32, pass the other end of the power cord 33 through the wire outlet of the sheet metal protection box 34 and connect it to the input end of the power isolation transformer 28. During the installation of the power cord 33, the redundant length of the power cord 33 is stored and wound on the turntable 312, and passes through the outlet hole 313 from the inside of the mounting frame 311 to the outside of the mounting frame 311, so as to avoid the redundant power cord 33 being randomly placed between the sensor 1 and the information processing module 2; When the sensor 1 measures the physical data of the fluid inside the pipeline, the fluid first enters the inside of the guide chamber 116, and then enters the inside of the mounting ring 112. The thermistor 113 measures the temperature data of the fluid. The voltage signal of the thermistor 113 directly enters the A / D signal converter 24. The fluid squeezes the isolation diaphragm 111, and the pressure is transmitted to the central measuring diaphragm 12 through the conduction of the filling liquid 14. The central measuring diaphragm 12 is a tensioned elastic element, which forms a differential capacitor with the capacitor plates 13 on both sides. The central measuring diaphragm 12 produces displacement deformation and forms a capacitance difference signal on the capacitor plates 13. The capacitance difference signal is transmitted to the inside of the oscillation regulator 23, and the thermistor The voltage signal of the resistor 113 and the signal processed by the oscillation modulator 23 are superimposed and converted into a conforming digital signal by the A / D signal converter 24, and then isolated and processed by the optical coupler isolator 25 and enter the microprocessor 26 for digital processing. The composite digital signal processed by the microprocessor 26 enters the D / A signal converter 27, and is converted into a loop DC signal after being processed by the D / A signal converter 27. Finally, it is output to the control system through the power isolation transformer 28 for processing and displayed by the display instrument 22, so that the multi-parameter flow transmitter can collect the temperature and pressure data of the fluid, thereby comprehensively measuring the physical data of the fluid in the pipeline.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Multi-parameter flow transmitter, characterized by: include: A sensor (1), an information processing module (2) and an energy supply module (3), wherein the energy supply module (3) comprises a mounting side plate (31), a power supply battery (32) is fixedly mounted on one side of the mounting side plate (31), an output end of the power supply battery (32) is electrically connected to a power line (33), and the power line (33) is electrically connected to the information processing module (2); a sheet metal protection box (34) is fixedly mounted on one side of the mounting side plate (31), and heat dissipation holes (341) are evenly opened on one side of the sheet metal protection box (34); the information processing module (2) comprises a mounting compartment (21), a display instrument (22), an oscillation regulator (23), an A / D signal converter (24), an optical coupler isolator (25), a microprocessor (26), a D / A signal converter (27), a power isolation transformer (28) and a communication module (281), and the output end of the power line (33) is electrically connected to the power isolation transformer (28).

2. The multi-parameter flow transmitter according to claim 1, characterized in that: The sensor (1) comprises a detection chamber (11), a central measuring diaphragm (12) is arranged at the center of the detection chamber (11), one end of the central measuring diaphragm (12) is electrically connected to a central measuring diaphragm wire (121), capacitor plates (13) are arranged on both sides of the central measuring diaphragm (12), one end of the two capacitor plates (13) is electrically connected to a capacitor wire (131), both ends of the detection chamber (11) are fixedly connected to an isolation diaphragm (111), the interior of the detection chamber (11) is filled with a filling liquid (14), and the upper end of the inner side of the detection chamber (11) is filled with a potting glue (114).

3. The multi-parameter flow transmitter according to claim 2, characterized in that: The outer sides of one ends of the central measuring diaphragm wire (121) and the capacitor wire (131) are arranged inside the potting glue (114).

4. The multi-parameter flow transmitter according to claim 3, characterized in that: The output end of the central measuring diaphragm wire (121) is electrically connected to the input end of the oscillation regulator (23), and the output end of the capacitor wire (131) is electrically connected to the input end of the oscillation regulator (23).

5. The multi-parameter flow transmitter according to claim 4, characterized in that: A mounting ring (112) is fixedly connected to one side of the detection chamber (11), a thermistor (113) is fixedly mounted through the upper end of the mounting ring (112), and an output end of the thermistor (113) is electrically connected to an input end of an A / D signal converter (24).

6. The multi-parameter flow transmitter according to claim 5, characterized in that: A plurality of mounting bolts (115) are connected to a ring-shaped thread on one side of the mounting ring (112), and a plurality of mounting bolts (115) are connected to a guide chamber (116) at one end thereof.

7. The multi-parameter flow transmitter according to claim 1, characterized in that: A mounting frame (311) is symmetrically fixedly connected to one side of the mounting side plate (31), and a rotating disk (312) is rotatably engaged on the inner sides of the two mounting frames (311), and the power cord (33) is wound around the outer side of the rotating disk (312).

8. The multi-parameter flow transmitter according to claim 7, characterized in that: A wire outlet hole (313) is provided on one side of the mounting frame (311), and the power line (33) is movably snap-connected inside the wire outlet hole (313).

9. The multi-parameter flow transmitter according to claim 1, characterized in that: The power cord (33) movably runs through one side of the installation compartment (21), and the display instrument (22) is fixedly mounted on the upper end of the installation compartment (21).

10. The multi-parameter flow transmitter according to claim 1, characterized in that: The oscillation regulator (23), the A / D signal converter (24), the optical coupler isolator (25), the microprocessor (26), the D / A signal converter (27), the power isolation transformer (28) and the communication module (281) are all fixedly mounted inside the installation compartment (21).

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