616 results about "Gas meter" patented technology

The invention discloses an Internet of Things intelligent gas meter leakage detection and early warning system and method, and relates to the technical field of gas leakage detection, and the method comprises the following steps: S1, collecting data through multiple sensors; s2, identifying an equipment operation state based on the data set and outputting a state confidence coefficient; s3, a stable monitoring window period is judged, a corresponding strategy is selected to compensate pressure data, and reliability is marked; s4, dynamically generating a detection threshold in combination with the historical mode, the real-time parameters and the data reliability; s5, dynamically adjusting a risk assessment weight according to the confidence coefficient and the reliability, calculating a risk score and determining an early warning level; s6, safety operation is executed according to grades; and S7, updating the model by using process data to realize self-optimization. According to the invention, by deploying a multi-sensor array and adopting a multi-modal signal fusion algorithm, the system can accurately identify the running state of the gas appliance, provides reliable preposition information for subsequent analysis, and overcomes the defect that data of a traditional single sensor is easily interfered.

The invention relates to the technical field of safety monitoring, and discloses a linkage monitoring method and system for a gas leakage alarm and a gas meter, and the method comprises the steps: periodically regulating and controlling the temperature of a gas sensor, obtaining monitoring values at different temperatures, calculating a specific value, and recognizing gas leakage and non-leakage gas sources; when leakage is judged, activating a camera to shoot an image of a gas meter counter, synchronously acquiring temperature and pressure data, and uploading the temperature and pressure data to a data processing center; a gas consumption value is extracted based on an image recognition algorithm, environmental interference is corrected in combination with an ideal gas state equation and a dynamic compensation model, and high-precision gas consumption is generated; and by analyzing the time sequence relevance between the corrected consumption and the leakage signal, if an abnormal condition is met, the valve is automatically closed, and an alarm is given. According to the invention, high precision, low false alarm and quick response of gas leakage detection can be realized.

The invention discloses a gas meter power supply abnormity monitoring system and method based on a signal acquisition technology, and relates to the technical field of gas meter power supplies, the system comprises a multi-dimensional sensing module, a dynamic adaptive module, a multi-dimensional fusion analysis module, an intelligent judgment module and a verification execution module; according to the invention, the multi-dimensional fusion analysis module accurately calculates key parameters such as a power supply ripple coefficient and load transient response time in a corresponding mode, the electromagnetic interference intensity is calculated through professional algorithms such as discrete Fourier transform in combination with an environment electric field and a magnetic field sequence, a threshold value is dynamically adjusted based on a working mode, and a comprehensive score is calculated through multi-parameter deviation weighted fusion. The power supply state is deeply and comprehensively evaluated; the intelligent judgment module scientifically divides anomaly levels according to comprehensive scores, quantifies and distinguishes real anomaly and environmental interference by means of an environmental interference contribution degree formula, solves the problem that traditional monitoring cannot accurately recognize power anomaly under complex working conditions, and improves anomaly judgment accuracy.

The invention relates to the technical field of data transmission, and discloses a gas meter information secure transmission method based on response function compensation, which comprises the following steps: collecting multi-source data and network signal quality information of a gas meter; according to a real-time network environment and physical conditions, data transmission parameters are dynamically adjusted through a response function compensation algorithm, when data transmission in a static time slot fails, a dynamic retransmission time slot is automatically allocated for retransmission, a retransmission frequency threshold value is set, and packet loss caused by channel errors or collision is compensated through a retransmission response function; a multi-layer encryption mechanism is adopted to encrypt transmission data, an optimal transmission channel is intelligently selected according to network conditions, adaptive hybrid communication is performed through star flash short-distance communication or Wi-Fi wide-area transmission, and a response compensation mechanism of multi-dimensional environmental parameters is established based on a signal transmission model; transmitting the encrypted data to a monitoring management platform through a secure channel; therefore, safety early warning decision is realized, and dynamic accurate transmission and active safety protection are realized.

The utility model discloses a metering module shared by a G4 ultrasonic gas meter and a G6 ultrasonic gas meter, relates to the technical field of gas metering, and solves the technical problem that an existing metering module cannot meet the use requirements of the G4 ultrasonic gas meter and the G6 ultrasonic gas meter. The device comprises a measuring pipe section, an energy converter and a fixing structure, the energy converter is fixed on the measuring pipe section, and the energy converter is a correlation type energy converter; the fixing structure is detachably connected to the gas outlet of the measuring pipe section, and the metering module is fixedly connected with an adapter of a G4 ultrasonic gas meter through the fixing structure, or the metering module is fixedly connected with an adapter of a G6 ultrasonic gas meter through the fixing structure. According to the utility model, the metering module can be fixed on the G4 ultrasonic gas meter or the G6 ultrasonic gas meter by replacing the fixing structure on the measuring pipe section, so that the use scene of the metering module is improved.

The invention discloses gas meter detection equipment for sealing performance detection. The gas meter detection equipment comprises a hollow sphere, a side connecting pipe, a top through opening, a transparent rubber sleeve, a top connecting pipe and a bottom cavity, the low-pressure air pump is provided with a U-shaped pipe; the inner wall of the hollow sphere is provided with a plurality of spherical-surface-shaped elastic pieces capable of rotating at the same time, the tops of the spherical-surface-shaped elastic pieces are all provided with top plates, the equipment successfully realizes the sealing performance detection of the gas meter, and meanwhile, mutual gathering of the plurality of spherical-surface-shaped elastic pieces is utilized, so that rotation is facilitated, and the sealing performance of the gas meter is improved. And the elasticity of the spherical surface-shaped elastic piece is utilized, so that after the top plate is loosened, the spherical surface-shaped elastic piece shields the other side connecting pipes, and therefore, the sealing performance of the gas meter connected with the single side connecting pipe can be detected, and the sealing performance of the gas meter connected with the single side connecting pipe can be detected. Therefore, the device can detect the sealing performance of a plurality of gas meters, and the efficiency of the device for detecting the sealing performance of a plurality of gas meters is greatly improved.

The application relates to the technical field of data processing, in particular to a kiln data monitoring and early warning method based on reinforcement learning, which comprises the following steps: acquiring intelligent gas meter readings at each collection time in each cycle during the operation of a rotary kiln and temperatures at each collection time at each monitoring point; calculating heat space diffusivity at each monitoring point at each collection time in each cycle, calculating heat time dissipation and heat propagation index at each monitoring point at each collection time in each cycle; constructing heat abnormality degree at each monitoring point; calculating energy consumption abnormality degree of the rotary kiln; calculating heat preservation degree at each collection time in each cycle; constructing comprehensive abnormality degree of the rotary kiln; constructing a prediction autoregressive term number according to the comprehensive abnormality degree of the rotary kiln, acquiring a predicted energy consumption of the rotary kiln, and monitoring abnormal conditions of rotary kiln operation energy consumption in combination with a preset energy consumption. The application aims to improve the reliability of rotary kiln operation energy consumption abnormality monitoring.

The invention relates to a high-reliability binding post assembly for a gas meter. The high-reliability binding post assembly is used for connecting two different wires. A welding connection part is formed at the end parts of the two wires through butt welding, and a primary coating layer is coated outside the welding connection part; a secondary injection molding body is arranged outside the primary coating layer, and the secondary injection molding body is coated outside the primary coating layer through injection molding. According to the binding post assembly, the coating / injection molding technology is adopted, tiny gaps around welding spots can be effectively filled, the binding post assembly and the wiring harness can be well combined, high reliability of the binding post assembly is guaranteed, the binding post assembly relates to few parts, the technology automation degree is high, the manual assembly link is reduced, and the production efficiency is improved. The production efficiency and consistency are improved, and the user experience is improved. The invention discloses a preparation method of a high-reliability binding post assembly for a gas meter. According to the method, the quality of the binding post assembly is ensured while the processing efficiency of the binding post assembly is effectively improved. The gas meter also has the advantage of high reliability.

The invention provides a gas micro-leakage detection method, device and equipment, a medium and a program product, and the method comprises the steps: determining the sampling information of each sampling point in a plurality of sampling points of a gas meter in a preset time period, and enabling the sampling information of the sampling points to comprise the measured pressure values of the sampling points and the predicted pressure values of the sampling points under a leakage-free working condition; according to the cavity volume of the gas meter, the micro-leakage standard deviation of the gas meter is determined from the micro-leakage standard deviations corresponding to the multiple preset volumes, and the sampling information of the sampling points comprises the measured pressure values of the sampling points and the predicted pressure values of the sampling points under the non-leakage working condition; and for any sampling point in the multiple sampling points, whether the sampling point meets the micro-leakage condition or not is judged according to the micro-leakage standard deviation of the gas meter and the sampling information of the sampling point, and if the multiple sampling points meet the micro-leakage condition, it is determined that gas micro-leakage exists in the gas meter, so that gas micro-leakage detection is achieved, and gas use safety is improved.

The invention relates to the field of gas pressure anomaly detection, and particularly discloses a catering user gas meter pressure anomaly fluctuation risk early warning method which comprises the following steps: S1, based on historical gas pressure data, determining a pressure upper and lower limit threshold value and a pressure change rate threshold value, and constructing a dynamic gas consumption behavior model; s2, gas pressure data are monitored in real time, when a pressure value exceeds a corresponding threshold value range or a pressure change rate exceeds a corresponding threshold value, pressure abnormity early warning is triggered, and an abnormity type is identified; s3, based on the pressure overrun characteristic and fluctuation characteristic of the gas pressure curve, the risk grade is evaluated, and grading early warning is started; and S4, judging whether fluctuation is synchronous or not and carrying out fault positioning by synchronously analyzing time-space correlation characteristics of the gas pressure curve and the gas flow curve. Through multi-dimensional feature analysis, dynamic modeling and comprehensive risk assessment, abnormity can be accurately identified, a fault source can be distinguished, and the gas use safety and the operation and maintenance efficiency are effectively improved.

The invention relates to a transducer matching optimization program algorithm for an NB remote transmission ultrasonic gas meter, and the method comprises the steps: carrying out the continuous sampling of measurement data in the gas meter in a sampling time period, and obtaining a sampling data set; obtaining a first sound velocity estimation value according to the downstream propagation time and the countercurrent propagation time; obtaining a primary sieve database based on all the first sound velocity estimated values; determining a matched fluid corresponding to the target fluid in a primary screen database according to the first sound velocity estimation value; determining an initial working parameter group in the transducer in a fluid acoustic parameter database according to the matched fluid; performing adaptive correction on the initial working parameter group according to the first sound velocity estimation value to obtain a recommended working parameter group; and generating a control instruction based on the recommended working parameter group, and sending the control instruction to the transducer. Compared with a fixed gain mode, the method can be matched with various gas media in a self-adaptive mode, and the application range of the ultrasonic gas meter is remarkably expanded.

The invention relates to the technical field of gas flow measurement, in particular to a self-calibration MEMS (micro-electromechanical system) ultrasonic flowmeter based on an AI (artificial intelligence) algorithm, which adopts a high-frequency MEMS ultrasonic probe, a low-power-consumption driving circuit and an acoustic / electrical impedance matching structure to realize efficient transmission and stable excitation of ultrasonic signals; a low-power-consumption microcontroller and an AI compensation module are arranged in the flowmeter, temperature, pressure, time of flight (TOF) and actual sound velocity measured in a static gas state are fused, dynamic correction and intelligent analysis of gas flow are achieved, and the measurement precision in a low-flow-velocity section and under complex working conditions is remarkably improved. The device supports an event-driven low-power-consumption working mode, and long-term battery power supply and modular deployment can be realized; compared with a traditional PZT flowmeter, the scheme has better integration, stability and adaptability while reducing system cost and power consumption, and is suitable for new-generation intelligent gas meters and industrial gas flow monitoring scenes.

The utility model discloses a metering module suitable for G4 and G6 ultrasonic gas meters, which comprises a measuring pipe section, a transducer, a fixing structure and a flow guide cover, the flow guide cover is fixed on a gas inlet of the measuring pipe section, the transducer is fixed on the side surface of the measuring pipe section, and the fixing structure is detachably connected on a gas outlet of the measuring pipe section; the structure of the measuring pipe section is an integrated structure; the metering module is fixedly connected with an adapter of the G4 ultrasonic gas meter through a fixing structure, or the metering module is fixedly connected with an adapter of the G6 ultrasonic gas meter through a fixing structure. The flow guide cover is clamped and fixed to the air inlet of the measuring pipe section of the integrated structure, the fixing structure is detachably connected to the air outlet of the measuring pipe section of the integrated structure, and the transducer is installed on the side face of the measuring pipe section, so that the metering module is convenient to assemble, and the measuring efficiency is improved by replacing the fixing structure on the measuring pipe section. And the metering module can be used for both the G4 ultrasonic gas meter and the G6 ultrasonic gas meter.

The utility model discloses a gas sampling device for environmental monitoring, which particularly relates to the field of environmental monitoring and comprises a sampling box, and an auxiliary sampling mechanism is mounted in the sampling box. By arranging the auxiliary sampling mechanism, the detection accuracy of environmental gas is improved, the whole device is placed in an environment needing to be monitored, gas in the environment needing to be monitored is sucked in through the sampling pipe by starting the pump body, the gas passes through the pump body and then is transmitted to the injection pipe through the corrugated pipe, and therefore the fixed disc is controlled to move downwards through the hydraulic rod; the injection pipe penetrates through the first butyl rubber plug and the second butyl rubber plug, gas is input into the gas storage tank to be stored, the gas is compressed through the hydraulic rod after being input, the injection pipe is arranged in the processing cavity, and meanwhile the gas meter automatically records and displays the volume or concentration of the gas in the gas storage tank. In the sampling and discharging process, multiple safety measures are taken, and the gas collection sealing effect is improved.

The invention discloses a gas meter leakage alarm device and method, and relates to the technical field of gas meter leakage alarm, the gas meter leakage alarm device comprises a base mechanism, the base mechanism is internally provided with a substrate mechanism used for preventing performance reduction caused by poisoning of a leakage alarm; the bottom of the substrate mechanism is provided with a rotary vane mechanism used for extracting surrounding air for gas detection. The base mechanism is installed at the top of a possible gas leakage area, surrounding air is actively extracted, stable airflow is formed and enters the equipment, the airflow is guided by the inner rotary vane assembly to enter the area of the net wadding assembly, large-particle impurities are effectively filtered through the assembly, internal elements are protected, and the safety of the equipment is improved. And through the linkage design of the inner rotary vane assembly and the rotary assembly, the dynamic change of the air inlet direction and the periodic scanning of the detection airflow path are realized, a multi-point and wide-area coverage sampling mode is formed, the detection range is expanded, and the risk of missing detection caused by local airflow dead angles is avoided.

The invention relates to the technical field of gas meters, in particular to an ultrasonic gas meter which comprises a shell, an ultrasonic pipe, an ultrasonic receiver, a reading module, a gas outlet pipe and a gas inlet pipe. The shell is installed on a wall, the ultrasonic pipe is transversely installed in the shell, the ultrasonic receivers are symmetrically installed on the two sides of the ultrasonic pipe, the reading module is installed at the front end of the shell, and the air outlet pipe and the air inlet pipe are symmetrically installed on the two sides of the top of the shell. The transmission mechanism and the adjusting mechanism are both installed on the inner wall of the upper cavity of the shell, and the transmission mechanism is connected with the adjusting mechanism through a clamping ring. The transmission mechanism drives the half gear to rotate through the motor, the half gear can drive the eccentric gear to rotate, due to the fact that the number of teeth of the half gear is half of that of the eccentric gear, the half gear rotates one circle to drive the eccentric gear to rotate a half circle, and the adjusting mechanism is opened to adjust the gas flow speed after the eccentric gear rotates a half circle.

To provide a technology that can reduce gas pressure loss in gas meters.SOLUTION: The gas meter comprises a tubular measurement flow path section through which the gas to be measured flows, a flow rate measurement section that measures the flow rate of the gas flowing through the measurement flow path section by irradiating ultrasonic waves into the measurement flow path section, a buffer chamber in which the inlet of the measurement flow path section is located and which guides the gas to the inlet of the measurement flow path section, an upstream flow path section that forms a flow path that guides the gas to the buffer chamber, and at least one guide wall section that protrudes from the inner wall surface of the buffer chamber around the inlet of the measurement flow path section in a region outside the inlet of the measurement flow path section when the buffer chamber is viewed in the direction of the central axis, and has a portion that extends toward the inlet side of the measurement flow path section in a region forward of the inlet of the measurement flow path section when viewed in a direction perpendicular to the direction of the central axis.SELECTED DRAWING: Figure 3

A calorific value derivation system is provided with a gas supply facility having a first transmission control unit for transmitting gas component information to a center server, a center server having: an information calculation unit for calculating the gas component information of the gas supply facility, and a gas meter for calculating the gas component information of the gas supply facility; a calculation unit that calculates fuel gas heat relationship information indicating a relationship between a characteristic of the fuel gas and a heat generation amount on the basis of the fuel gas component information, and recalculates the fuel gas heat relationship information in accordance with a change in the fuel gas component information; and a second transmission control unit that transmits the gas heat relationship information to a gas meter, the gas meter having: a flow rate measurement unit that measures the flow rate of the gas on the basis of the characteristics of the gas; a heat coefficient calculation unit that calculates a heat coefficient on the basis of the gas heat relationship information; a calorific value acquisition unit that acquires instantaneous calorific values on the basis of the flow rate of the fuel gas and the calorific value coefficient, and that acquires the calorific value of the fuel gas by integrating the instantaneous calorific values at predetermined time intervals; and a third transmission control unit that transmits the flow rate and the heat generation amount to the center server.

The utility model relates to the technical field of ultrasonic gas meters, in particular to a flow channel module connecting structure and an ultrasonic gas meter. The air outlet pipe comprises an air inlet end and an air outlet end, the flow channel module comprises a connecting end which is inserted in a sealed mode and communicates with the air inlet end of the air outlet pipe, and the connecting end is detachably connected with the air inlet end of the air outlet pipe; the connecting end of the flow channel module is directly inserted into the air inlet end of the air outlet pipe, and then the connecting end is connected with the air inlet end; compared with the prior art, the structure does not need other additional parts to complete installation of the flow channel module, the number of parts is reduced, the overall weight is reduced, and the ultrasonic gas meter is lighter and convenient to transport and install. Meanwhile, due to the simplified structure, the manufacturing cost is reduced, the production and assembly links of redundant parts are omitted, and the production efficiency is improved; and the plug-in connection does not depend on a specific watchcase structure, can be flexibly adapted to watchcases of different models or manufacturers, and is higher in universality.

The utility model relates to the technical field of gas meter installation auxiliary tools, in particular to a tool for rapidly determining a reserved gas meter position. Comprising an interface spacing detection part, a wall spacing detection part and a handle, the interface spacing detection part is used for checking whether the distance and the levelness between two interface pipes of the gas meter to be installed meet the installation standard or not, and the interface spacing detection part is connected with the wall spacing detection part; the wall body spacing detection part is used for checking whether the distances between two interface pipes of the gas meter to be installed and the wall body meet the installation standard or not, and the wall body spacing detection part is connected with the handle; the handle is used for taking and placing the whole tool. The tool not only can quickly verify whether the positions of the two interface pipes of the gas meter to be installed accord with the installation standard of the gas meter to be installed, but also is simple in structure and easy to use, and improves the acceptance inspection efficiency.

This invention discloses a composite testing device for the interface connection strength of a gas meter housing, relating to the field of gas meter manufacturing and testing technology. In existing technologies, after the gas meter housing is manufactured, it needs to be transferred to specific equipment for interface pull-out and torsion testing, both typically performed on separate equipment, resulting in low efficiency. The composite testing device provided by this invention is integrally mounted on the fixed pressure plate of a stamping and riveting equipment, comprising: a clamping structure including a clamping cylinder and a clamping linkage assembly, the clamping linkage assembly including a wedge-shaped push block and two clamping parts, the clamping parts having arc-shaped clamping portions for clamping and fixing the interface; a pull-out testing structure applying a straight load at the interface for pull-out strength testing; and a torsion testing structure applying a torsional load to the clamping structure for torsional strength testing. This invention enables direct strength testing after stamping and riveting, eliminating the step of disassembly and reinstallation, improving production testing efficiency, and reducing production costs.

The utility model relates to an ultrasonic gas meter flow regulator. The flow regulator is characterized in that the flow regulator is mounted at a flow channel air inlet of the flow channel and sequentially comprises a scattering layer, a developing layer and a rectifying layer which are integrally formed through injection molding or are assembled and connected in a split manner. The utility model aims to change the original gas flow field distribution, stabilize the flow field characteristics of the metering module and improve the metering precision of the ultrasonic gas meter, and has the characteristics of strong adaptability, convenience in installation and positioning, good flow field stability, high precision and the like.

The invention discloses a composite detection device for the connection strength of a shell interface of a gas meter, and relates to the technical field of manufacturing and detection of gas meters. In the prior art, after being manufactured, a gas meter shell needs to be transferred to specific equipment for interface drawing detection and torsion detection, the gas meter shell and the specific equipment are usually detected on independent equipment, and efficiency is low. The composite detection device provided by the invention is integrally mounted on a fixed pressing plate of stamping and riveting equipment, and comprises a clamping structure which comprises a clamping cylinder and a clamping linkage assembly, the clamping linkage assembly comprises a wedge-shaped push block and two clamping pieces, and each clamping piece is provided with an arc-shaped clamping part and is used for clamping and fixing an interface; the drawing detection structure is used for applying a straight load at the interface to carry out drawing strength detection; and the torsion detection structure is used for applying a torsion load to the clamping structure to detect the torsion strength. According to the invention, strength detection is directly carried out after stamping and riveting, the step of dismounting and remounting is omitted, the production detection efficiency is improved, and the production cost is reduced.

The utility model relates to the technical field of diaphragm gas meters, and discloses a diaphragm gas meter sampling and counting device which comprises a gas meter body, a diaphragm and a transmission device are arranged in the gas meter body, an output shaft of the transmission device extends out of the gas meter body from the side face, and an output wheel is arranged at the end, located outside the gas meter body, of the output shaft. A sampling wheel is arranged on one side of the output wheel, the sampling wheel is meshed with the output wheel, magnetic steel is arranged on the sampling wheel, a circuit board covers the sampling wheel, a sampling sensor is arranged at the position, opposite to the sampling wheel, of one side, facing the sampling wheel, of the circuit board, the sampling sensor is in wireless connection with the sampling wheel, and a display screen is arranged on the other side of the circuit board. According to the utility model, the output wheel and the sampling wheel are arranged outside the gas meter main body, and the sensor is arranged outside the sampling wheel, so that the influence of internal parts and environment on data transmission can be reduced, the collected data can be corrected, the display error is reduced, and the sampling accuracy is improved.

This utility model discloses a gas metering box, including a metering box body. Both sides of the metering box body have through-holes for pipes. Sealing sleeves are provided on both the inner and outer sides of the through-holes. The sealing sleeves are fixedly connected to the metering box body by adhesive. The end of the sealing sleeve furthest from the metering box body is inclined inwards, and the edge of this end of the sealing sleeve is turned outwards at a 45-degree angle. A restraining ring is fitted on the outer side of this end of the sealing sleeve. The advantage of this utility model is that by using the sealing sleeve to fit against the outer surface of the gas pipe installed through the through-hole, the gap between the gas pipe and the through-hole is sealed, thus preventing external dust and moisture from entering the metering box body. This seal also prevents the pipes and gas meter installed inside the metering box from being corroded by dust and external moisture.

The utility model discloses a gas control system based on an intelligent gas meter display, which is applied to the technical field of gas meter control. Comprising a displayer, an intelligent gas meter, a terminal APP and a cloud platform, the displayer comprises a Bluetooth module, a 4G module, a control module and a liquid crystal display module, the displayer is in communication connection with the intelligent gas meter through Bluetooth connection or wired connection, and the displayer is in communication connection with the terminal APP and the cloud platform through 4G signals. According to the utility model, data such as working condition cumulant, temperature, pressure, flow and the like of the gas meter can be inquired more efficiently, and the gas meter control device has a control function and can communicate with the gas meter in a Bluetooth signal connection or wired connection mode to control a valve of the gas meter.

The utility model discloses a convenient reading device for gas meter, including protective shell, the protective shell front side is installed with the protective door, has opened the inspection window on the protective door, the hinged mirror is hinged to the inspection window, the protective door is connected with the pull rope, the pull rope can drive the rotation of the mirror, the protective door is installed with the cleaning frame, the cleaning frame can clean the inside surface of the mirror.

1. The name of this design product: Alarm interface for ultrasonic gas meter. 2. Purpose of this design product: The overall appearance is used to detect gas volume, and the partial appearance is used for the gas meter alarm interface. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1. 5. Other circumstances that require explanation: This design product is a partial design.

The utility model relates to the technical field of gas equipment, and particularly discloses display equipment for flexibly displaying icon information of a gas meter, which is characterized in that a fixed arrow icon is configured on a segment code screen based on a general design scheme; custom icon information is configured according to the target design scheme, and the icon information is printed on the plastic shell through the screen printing technology; by updating firmware, the position and the direction of the arrow icon can be flexibly adjusted, and target design scheme requirements of different gas companies are met; and different icon information is flexibly displayed according to the requirements of different gas companies, so that the use convenience and the information display efficiency of the gas meter are improved, and meanwhile, the research and development cost and time of meter manufacturers are reduced.

The utility model discloses a convenient connecting device for a gas meter and a gas pipeline, which belongs to the technical field of gas engineering and comprises a connecting pipe, the gas meter, the gas pipeline and a connecting sleeve, a fixing ring is fixedly connected to the center of the connecting pipe, and a group of first threaded holes distributed in an annular array are formed in each of the left end and the right end of the connecting pipe. A set of second threaded holes distributed in an annular array are formed in the connecting sleeve, matched positioning pins are jointly installed in the first threaded holes and the second threaded holes, an annular groove is formed in the connecting sleeve, an outer sealing ring is fixedly connected in the annular groove, and double sealing is achieved through a first elastic sealing ring and a second elastic sealing ring. The first elastic sealing ring conducts internal sealing on the connecting position through the elastic force of the compression spring, the second elastic sealing ring conducts external sealing through gas expansion of the annular elastic gas bag, the double-sealing design greatly improves the connecting sealing performance, and the gas leakage risk is effectively avoided; and safe and stable operation of the gas supply system is ensured.