WO2015043351A1 - 安全切断型远控智能燃气表 - Google Patents

安全切断型远控智能燃气表 Download PDF

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Publication number
WO2015043351A1
WO2015043351A1 PCT/CN2014/085250 CN2014085250W WO2015043351A1 WO 2015043351 A1 WO2015043351 A1 WO 2015043351A1 CN 2014085250 W CN2014085250 W CN 2014085250W WO 2015043351 A1 WO2015043351 A1 WO 2015043351A1
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WO
WIPO (PCT)
Prior art keywords
gear
gas meter
remote control
gas
control smart
Prior art date
Application number
PCT/CN2014/085250
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English (en)
French (fr)
Inventor
邵泽华
权亚强
向海堂
吴岳飞
Original Assignee
成都秦川科技发展有限公司
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Application filed by 成都秦川科技发展有限公司 filed Critical 成都秦川科技发展有限公司
Publication of WO2015043351A1 publication Critical patent/WO2015043351A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/52Mechanical actuating means with crank, eccentric, or cam
    • F16K31/528Mechanical actuating means with crank, eccentric, or cam with pin and slot
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor

Definitions

  • the present invention relates to a gas meter, and more particularly to a safety cut-off type remote control smart gas meter. Background technique
  • the remote control smart gas meter and the gas sales management system exchange data, and the gas sales management system transmits relevant control commands and recharge data to the remote control smart gas meter through wired or wireless transmission mode, and simultaneously controls the relevant in the smart gas meter.
  • the information is returned to the gas sales management system through the same transmission method.
  • the remote control smart gas meter and its gas sales management system the gas company can manage the related remote control smart gas meter in real time.
  • the remote control smart gas meter used does not have an effective and reliable technical means for the safety of gas in the process of gas use. If the gas is abnormal during use, it may cause leakage and fire. The explosion and other conditions are not conducive to the safety management of gas companies, but also bring great hidden dangers to people's lives and property safety.
  • the existing remote control smart gas meter has no relevant detection means to judge this air leakage phenomenon, there is no effective preset mechanism for valve closing and image and sound alarm, gas leakage Can't get processed in time.
  • the existing remote control intelligent gas meter has no abnormal large-flow pipeline cut-off management and related alarm mechanism.
  • the gas pipeline to the cooker breaks or falls off, the abnormal large-flow leakage of the gas cannot be shut off in time, and the gas is distributed to the user.
  • a mixture of gas and air which quickly reaches the concentration of the gas explosion, poses a major risk of explosion and fire.
  • people's daily life people often have other things to delay when cooking food, which causes the cooking utensils to heat up for a long time. When the length of time reaches a certain period of time, the cooking utensils on the cooker may burn and burn.
  • Some remote control smart gas meters cannot limit the length of the period of normal use of gas. In this case, It may cause a fire and cause a major safety accident.
  • the air supply pressure of the external gas pipeline may change for some reason.
  • the existing remote control smart gas meter cannot monitor this pressure change.
  • the remote control smart gas meter cannot know, continue to Gas supply from gas equipment may cause malfunction of gas equipment, such as fire, gas leaks, etc.
  • One of the objects of the present invention is to provide a safety cut-off type remote control smart gas meter in view of the above-mentioned deficiencies, in order to solve the problem that the gas meter cannot accurately collect the abnormal state information when the gas use abnormal state occurs in the prior art, and the gas cannot be used. Supply technical problems such as safe shutdown.
  • the present invention uses the following technical solutions:
  • the invention provides a safety cut-off type remote control intelligent gas meter, comprising a base watch body and a data transmission module, wherein the base watch body is provided with a gas inlet and a gas outlet, and the gas inlet is provided with a shut-off valve,
  • the gas meter further comprises a signal collection processing circuit and a safety cut-off type remote control intelligent gas meter terminal microcomputer controller, wherein the signal collection processing circuit and the data transmission module are respectively connected to the safety cut-off type remote control intelligent gas meter terminal microcomputer control
  • the data transmission module and the remote control end mutually transmit a control signal, and the collection end of the signal collection processing circuit is connected to the mechanical counting device of the base body through the electromechanical signal conversion device, and the shut-off valve is controlled by the shut-off valve
  • the circuit is connected to the safety cut-off type remote control intelligent gas meter terminal microcomputer controller;
  • the utility model is configured to collect flow information of the internal gas passing through the base body by the signal collection processing circuit, and convert the same into the corresponding electronic measurement
  • the safety cut-off type remote control smart gas meter terminal microcomputer controller is provided with at least a small flow leakage corresponding to the base body, an abnormal large flow rate, and an abnormal state wide value range which is used for a long time, and is used for
  • the flow rate information contained in the electronic metering pulse signal of the signal collection processing circuit is compared, and it is judged based on the comparison result whether the shut-off valve is closed by the shut-off valve control circuit.
  • the abnormal state of the small flow leakage is that the gas flow rate flowing through the base body is greater than the starting flow of the mechanical counting device, and is less than half of the ignition flow of the gas appliance, and the duration exceeds the pre-flow Set the value.
  • the abnormal state of the abnormal large flow is that the gas flow rate flowing through the base body exceeds a preset multiple of the maximum flow preset value within a preset unit time.
  • the abnormal state that is used for a long time is that the gas flow rate flowing through the base body is within the range of the normal use flow rate of the gas, but the duration exceeds a preset value;
  • the normal use flow rate of the gas is The gas flow rate flowing through the base body is greater than the minimum flow rate of the base body, greater than or equal to the ignition flow of the gas appliance, less than the abnormal large flow rate, and the duration does not exceed the preset value;
  • the minimum flow rate of the base body is flow through The minimum flow value of the base body and capable of accurately counting the mechanical counting device.
  • the gas meter further includes a sensor detecting module, wherein the sensor detecting module is connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller through the communication interface, and is used for detecting the outside of the gas meter through an external sensor
  • the current state of the environment, and the corresponding environmental information is transmitted to the sensor detection module
  • the micro-computer controller of the safety-cut remote control smart gas meter terminal collects environmental information from the sensor detection module, and determines whether to pass the shut-off valve according to the current environmental information.
  • the control circuit closes the shut-off valve
  • the external sensor includes any one or more of a seismic sensor, a gas pressure sensor, a gas concentration detection alarm, and a composite alarm.
  • the gas meter further includes an undervoltage protection circuit and a power failure protection circuit
  • the circuit, the anti-magnetic interference circuit and the state recovery circuit, the under-voltage protection circuit, the power-off protection circuit, the anti-magnetic interference circuit and the state recovery circuit are respectively connected to the safety cut-off type remote control intelligent gas meter terminal microcomputer controller for use in the gas
  • the corresponding circuit is controlled by the microcomputer-controlled remote control smart gas meter terminal microcomputer controller to complete the operation of closing the valve, alarm and state recovery;
  • the data transmission module is a wireless transmission module of any one of an infrared signal, an ultrasonic signal, an optical signal, a microwave signal, a GPRS and a GPS, or a cable of any one of a power carrier, an optical fiber transmission and a data line transmission. Transmission module.
  • the gas meter further includes a liquid crystal screen and a buzzer, and the liquid crystal screen and the buzzer are also connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller, and at least for assisting The safety cut-off type remote control intelligent gas meter terminal microcomputer controller completes the operation of the alarm;
  • the data transmission module is connected to the base meter through the USB interface and the safety cut-off type remote control intelligent gas meter terminal microcomputer controller; the safety cut-off type remote control smart gas meter terminal microcomputer controller is also connected to the base table through the electronic counting sampling module, and the electronic An anti-magnetic protection module is also installed in the counting sampling module;
  • the gas meter further includes an IC card information exchange module, and the IC card information exchange module is also connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller, which is used for microcomputer control of the safety cut-off remote control smart gas meter terminal
  • the device reads the refill data in the IC card through the IC card information exchange module.
  • the safety cut-off type remote control smart gas meter terminal microcomputer controller is further connected to the counting reed switch in the base body through the counting reed switch sampling control circuit in the electronic counting sampling module,
  • the counting reed switch is at least two, and is installed in a straight positioning position in the matching positioning groove, and is used for controlling the buckle number signal by the safety cut-off type remote control smart gas meter terminal microcomputer controller, and counting the reed switch Deducting the gas recharge amount from the data transmission module;
  • the counting reed switch is counted by a combination of mechanical counting and electronic counting, wherein the electronic counting is controlling the liquid crystal through the safety cut-off type remote control smart gas meter terminal microcomputer controller
  • the display circuit transmits a data signal to the connected liquid crystal display;
  • the safety cut-off type remote control smart gas meter terminal microcomputer controller has a maximum value and a minimum value of two deduction time intervals.
  • the shut-off valve includes an outer casing, and an inner casing is further mounted inside the outer casing, wherein the inner casing is equipped with an electric motor, a gear reduction box, a gear reduction box top cover and a valve stem a sealing cap is disposed on one end of the valve stem, and a connecting hole is disposed on the other end, and an input gear, an output gear and a driving gear are mounted in the gear reduction box, and an output shaft of the motor is dynamically connected with the input gear
  • the input gear is dynamically connected to the output gear through the multi-stage transmission gear, and is configured to be dynamically connected to the driving gear through a plurality of shafts
  • the gear reduction box top cover is mounted with a ratchet double gear and an incomplete gear, the ratchet
  • the double gears are respectively meshed with the driving gear and the incomplete gear, and the incomplete gear is provided with an eccentric column, and the eccentric column is inserted into the connecting hole of the end of the valve stem;
  • the top of the gear reduction box is also equipped with a
  • a further technical solution is: the motor is sealed and installed inside the inner casing, and the gear reduction box and the gear reduction cover top cover are statically sealed by the sealing ring; the transmission shaft is sealingly connected with the driving gear; The inside of the inner casing is statically sealed by a sealing ring; the output shaft of the motor extends into the gear reduction box, and a sealing ring is arranged between the output shaft of the motor and the gear reduction box, and is dynamically sealed and installed; The shaft is installed on the top cover of the gear reduction box by a sealing force and is connected to the driving gear.
  • the ratchet double gear is formed by fixedly mounting a ratchet gear above the gear, and the locking block is engaged with the ratchet gear.
  • the gears are respectively meshed with the incomplete gear and the driving gear; the ratchet teeth on the ratchet gear are inclined in a counterclockwise direction, and are used to rotate only in a clockwise direction after being engaged with the lock block;
  • the reset device mounted on the block and the incomplete gear is a torsion spring, which is used to keep the lock block engaged with the ratchet double gear, so that the incomplete gear Automatically reset in the non-engaged state.
  • one of the beneficial effects of the present invention is: collecting the amount of gas flowing through the base body in real time through the signal collection processing circuit, and transmitting it to the safety cut-off remote control smart gas meter in time.
  • the micro-computer controller can close the shut-off valve on the base body in time when it detects an abnormal state such as small flow leakage, abnormal large flow rate and long use time of the output of the base body, and can pass the liquid crystal screen and buzzer. Alarms are issued to avoid excessive gas leakage, causing combustion or explosion, and to protect people's lives and property.
  • the safety cut-off type remote control smart gas meter terminal microcomputer controller cooperates with various types of sensors connected externally to make the gas meter use
  • the real-time situation of the environment can also be one of the triggering conditions for the shut-off operation of the micro-computer controller of the safety-cut remote control smart gas meter terminal; and the safety-cut remote control smart gas meter provided by the invention has a simple structure and is suitable for Industrial production, easy to promote.
  • FIG. 1 is a block diagram for explaining a gas state collection process according to an embodiment of the present invention
  • Figure 2 is a schematic block diagram showing the structure of another embodiment of the present invention.
  • Figure 3 is a schematic view showing the overall structure of a shut-off valve in accordance with still another embodiment of the present invention
  • Figure 4 is a schematic view showing the structure of a first split face of a gear reduction gearbox according to still another embodiment of the present invention
  • FIG. 6 is a schematic structural view of a second gear splitting surface of a gear reduction gearbox according to still another embodiment of the present invention
  • FIG. 6 is a structural schematic view for explaining a force-increasing dynamic seal of a driving gear and a transmission shaft reduction gearbox according to still another embodiment of the present invention
  • Fig. 7 is a block diagram showing the composition of a safety cut-off remote control smart gas meter management system in another embodiment of the present invention. detailed description
  • an embodiment of the present invention is a safety cut-off type remote control smart gas meter, which comprises a base body and a data transmission module, wherein the base body is provided with a gas inlet and a gas outlet, and the gas is provided.
  • a shut-off valve is installed on the inlet, the gas meter further comprises a signal collecting and processing circuit and a safety cut-off type remote control intelligent gas meter terminal microcomputer controller, wherein the signal collecting processing circuit and the data transmission module are equally divided Do not access the safety cut-off type remote control smart gas meter terminal microcomputer controller, the data transmission module and the remote control end transmit control signals to each other, and the collecting end of the signal collecting and processing circuit is connected to the base table through the electromechanical signal conversion device
  • the mechanical counting device of the body, the shut-off valve is connected to the microcomputer controller of the safety cut-off type remote control smart gas meter terminal through the shut-off valve control circuit;
  • the function of the above gas meter structure is: the flow information of the gas inside the base body is collected by the signal collection processing circuit, and converted into a corresponding electronic metering pulse signal input safety cut-off remote control smart gas meter terminal microcomputer controller ;
  • At least a range of abnormal flow thresholds corresponding to a small flow leakage, an abnormal large flow rate and an excessively long use time corresponding to the base body is pre-set, and can also be called It is the gas abnormal state monitoring mechanism shown in Fig. 1; its function is to compare with the flow information contained in the electronic metering pulse signal from the signal collection processing circuit to determine whether the gas abnormal use state occurs, and further judge the time Which abnormal state, and based on the comparison result, determines whether the shutoff valve is closed by the shutoff valve control circuit.
  • the signal collection processing circuit is used to collect the amount of gas flowing through the base body in real time, and timely transmit it to the microcomputer controller of the safety cut-off remote control smart gas meter terminal, and detect the output of the base body.
  • the shut-off valve on the base body can be closed in time, and the LCD screen and buzzer can be selected to alarm to avoid excessive gas leakage and cause burning or Explosion, protecting the safety of people's lives and property.
  • the gas meter in the present invention is based on volumetric mechanical metering technology (ie, the above-mentioned basic surface body), through signal collection processing technology, safety shut-off valve technology and remote data transmission technology, and microcomputer.
  • the controller realizes the gas meter of the safety cut-off function such as valve control and abnormal state alarm through the organic combination of the reed switch deduction billing technology, and the safety cut-off type remote control smart gas meter terminal microcomputer controller is provided with a storage device for The gas prepaid data from the data transmission module is stored.
  • the signal collection processing circuit collects the amount of gas flowing through the base body in real time, and the purpose thereof is to determine whether the gas output of the base body is abnormal, for the abnormal situation.
  • the author summarized the three abnormal situations most commonly occurring in the base surface, namely the above-mentioned small gas flow leakage, The gas abnormal large flow rate and the gas use time are too long, and in the present invention, the above three cases are defined as follows:
  • the abnormal state of small flow leakage means that the flow rate of gas flowing through the base body is greater than the starting flow of the base body and less than half of the ignition flow of the gas appliance, and the duration exceeds a preset value.
  • the initial flow rate refers to the lower limit of the flow rate of the gas flow through the base body to enable the base body to count;
  • the ignition flow of the gas appliance refers to the ability to maintain the combustion of the gas cooker (generally referred to as a gas cooker for household use).
  • the abnormal state of abnormal large flow refers to the preset multiple of the gas flow rate flowing through the base body exceeding the preset value of the maximum flow within a predetermined unit time.
  • the preset multiple is generally set by the gas meter manufacturer.
  • the maximum flow rate of the meter end is set; the maximum flow rate refers to the upper limit of the specified flow rate that the gas meter can accurately count.
  • the value is set by the gas meter manufacturer according to relevant technical standards.
  • An abnormal state that is used for a long period of time means that the gas flow rate flowing through the base body is within a wide range of the normal flow rate of the gas, but the duration exceeds a preset value; the normal flow rate of the gas is flowing through the base body.
  • the gas flow rate is greater than the minimum flow rate of the base body, greater than or equal to the ignition flow rate of the gas appliance, less than the abnormal large flow rate, and the duration does not exceed the preset value; the minimum flow rate of the base body flows through the base body and enables The minimum flow value for accurate counting of the base body.
  • the inventors have found that, for safety reasons, even if the gas flowing through the base body does not exhibit the above abnormality, If the external environment installed by the gas meter is not suitable for using gas, it is still prone to safety accidents. Therefore, in order to ensure that the gas meter is used in a non-abnormal state, some parameters in the external environment can also be triggered.
  • the safety cut-off type remote control intelligent gas meter terminal microcomputer controller performs the condition of shutting off the shut-off valve; specifically, adding a sensor detecting module in the gas meter, and connecting the sensor detecting module to the safety cut-off type remote control smart gas meter terminal through the communication interface Microcomputer controller for communication
  • the external sensor detects the current state of the external environment of the gas meter, and transmits the corresponding environmental information to the sensor detection module, and the micro-computer controller of the safety-cut remote control smart gas meter terminal collects environmental information from the sensor detection module according to the current
  • the environmental information determines whether the shut-off valve is closed by the shut-off valve control circuit; and the aforementioned external sensor can be selected according to the place of use and the area of the gas meter, and one or more types are determined; for example, a seismic shock sensor, a gas pressure sensor, and a gas concentration detection Alarm, or compound alarm, etc.
  • the above sensor detecting module refers to a detecting device connected to an external sensor, which is used for converting a signal transmitted from an external sensor into a switching quantity output signal, and can transmit the switching quantity output signal to a safety cut-off type remote control smart gas meter terminal microcomputer control Device.
  • the inventor also refers to the prior art, and other problems that may occur when the gas meter with the terminal microcomputer controller is used are solved by the following technical means: adding an undervoltage protection circuit and powering off the gas meter
  • the protection circuit, the anti-magnetic interference circuit and the state recovery circuit, the under-voltage protection circuit, the power-off protection circuit, the anti-magnetic interference circuit and the state recovery circuit are respectively connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller,
  • the corresponding circuit is controlled by the microcomputer-controlled remote control intelligent gas meter terminal microcomputer controller to complete the operation of closing the valve, alarm and state recovery.
  • the above data transmission module preferably uses a wireless transmission module of any one of an infrared signal, an ultrasonic signal, an optical signal, a microwave signal, a GPRS and a GPS, or any one of a power carrier, an optical fiber transmission and a data line transmission.
  • the data transmission module can set the FLASH memory, and connect the FLASH memory to at least two independent transmission devices, and the wireless transmission used by the transmission device is an infrared signal, a power carrier, a photoelectric signal, an ultrasonic signal, Microwave signal, GPRS and GPS can be packaged in combination of two or more to meet different data transmission requirements, and expand the management scope of gas companies for terminal gas meters.
  • the wireless transmission used by the transmission device is an infrared signal, a power carrier, a photoelectric signal, an ultrasonic signal, Microwave signal, GPRS and GPS can be packaged in combination of two or more to meet different data transmission requirements, and expand the management scope of gas companies for terminal gas meters.
  • the above data transmission module is preferably connected via USB.
  • the port is connected with the safety cut-off type remote control intelligent gas meter terminal microcomputer controller; and if necessary, the above data transmission module may first be connected with the upper multi-level communication device, and then passed through the upper multi-level communication device and the gas sales.
  • the management system is connected to ensure the integrity of the data transmission.
  • the present invention can directly take the IC card smart gas meter in the prior art as the core (that is, the IC card smart gas meter includes the above-mentioned base body), that is, the gas meter in the above embodiment further includes an IC card.
  • the information exchange module, and the IC card information exchange module is also connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller for reading by the IC card information exchange module by the safety cut-off type remote control smart gas meter terminal microcomputer controller
  • the refill data in the IC card serves as the second way for the data transmission of the present invention.
  • the information exchange with the IC card information exchange module may be any one of a memory card, a logical encryption card and a CPU card.
  • the safety cut-off type remote control smart gas meter terminal microcomputer controller is triggered to perform the operation of closing the shut-off valve, so as to promptly remind the user to know, the alarm function can also be designed on the gas meter;
  • a liquid crystal screen and a buzzer are further added to the gas meter, and the liquid crystal screen and the buzzer are also connected to the safety cut-off type remote control smart gas meter terminal microcomputer controller, and at least used for assisting the safety cut-off type remote control
  • the intelligent gas meter terminal microcomputer controller completes the operation of the alarm, that is, when any abnormal state of the gas meter occurs, when the valve is closed, the sound and light alarm is also performed through the buzzer and the liquid crystal screen;
  • the above-mentioned safely cut-off remote control smart gas meter terminal microcomputer controller is also connected with the base meter through the electronic counting sampling module, and the electronic counting sampling module is also installed with an anti-magnetic protection module to avoid the magnetic pair. The interference caused by its use.
  • the inventor also refers to the implementation method of the pre-paid deduction billing of the existing remote control smart gas meter, and the above-mentioned safety cut-off remote control smart gas meter terminal microcomputer controller passes the counting reed switch sampling control circuit in the electronic counting sampling module. And connected with the counting reed switch in the base body, and the counting reed switch is set to at least two, and is installed in a straight positioning position in the matching positioning groove, and preferably the circuit board is installed in the positioning groove.
  • the gas recharge amount from the data transmission module is deducted by counting the reed switch; the counting reed switch is counted by a combination of mechanical counting and electronic counting, wherein the electronic counting is through the safety cut-off type remote control smart gas meter terminal
  • the microcomputer controller controls the liquid crystal display circuit to transmit a data signal to the connected liquid crystal display screen; and then sets the maximum value and the minimum value of the two deduction time intervals in the microcomputer controller of the safety cut-off remote control smart gas meter terminal.
  • the long standby metering distortion that may exist in the actual use of the gas meter is reduced.
  • the maximum standby time value is also set, and the smart gas is controlled by remote control.
  • the table terminal microcomputer controller is initialized to overcome the aforementioned distortion problem; at the same time, the remote control smart gas meter terminal microcomputer controller is also provided with a clock controller, and the remote control smart gas meter terminal microcomputer controller can also be clocked by means of the clock controller
  • the control electric valve control circuit sends a control signal to the electromechanical valve.
  • the inventors have also found through experiments that, in addition to the above-mentioned abnormal conditions, the safety hazard of the shut-off valve itself will seriously affect the safety of the use of the gas meter, for example, the power supply current for powering the shut-off valve is too large, If the gas leaks, if the safety cut-off type remote control smart gas meter terminal microcomputer controller detects the abnormal state and closes the valve, the control shut-off valve is closed, and when the shut-off valve is closed, once the current is too large The generation of electric sparks easily ignites the gas and even explodes; on the other hand, the sealing performance of the shut-off valve after closing will also determine whether the gas meter can be in a completely safe state after closing the valve;
  • the inventors have further improved the structure of the shut-off valve in the above embodiment based on the above-mentioned actual situation, and the shut-off valve is used to receive the remote control smart gas meter terminal microcomputer.
  • the safety switch valve is operated when the controller commands.
  • the specific structure of the shut-off valve is another embodiment of the present invention which is more preferable to solve the technical problem, and includes an outer casing, and an inner casing 4 is mounted inside the outer casing, and the inner casing 4 is mounted as a cut.
  • the input gear 21, the output gear 11 and the driving gear 23 are required to be connected, and the output shaft of the motor 1 is dynamically connected to the input gear 21, and the input gear 21 is dynamically connected to the output gear 22 through the multi-stage transmission gear 24.
  • the output gear 11 is also dynamically connected to the driving gear 23 via the transmission shaft 25; on the basis of the aforementioned gear reduction box top A ratchet double gear 26 and an incomplete gear 27 are disposed on the cover 7, and the ratchet double gear 26 meshes with the driving gear 23 and the incomplete gear 27, respectively, and the incomplete gear 27 is provided with an eccentric column 271.
  • the eccentric post 271 is inserted into the connecting hole 32 at the end of the valve stem 3, and the gear reduction box top cover 7 is further mounted with a lock block 28, and the lock block 28 is engaged with the ratchet double gear 26 for use.
  • the restricting ratchet double gear 26 is reversely rotated; and the reset block 29 is further mounted on the lock block 28 and the incomplete gear 27.
  • the motor 1 drives the input gear 21 to rotate, and the input gear 21 amplifies the torque of the output shaft of the motor 1 through the multi-stage transmission gear 24 meshed therewith, and transmits it to the output gear 22, which transmits the torque through the transmission shaft 25. It is transmitted to the driving gear 23, and the driving gear 23 drives the ratchet double gear 26 to rotate, and then the ratchet double gear 26 drives the incomplete gear 27 to rotate.
  • the eccentric column 271 can drive the valve stem.
  • the connecting hole 32 at the end of the valve stem 3 can be set as a strip hole, so that the eccentric post 271 can be in the strip shape
  • the lock block 28 engaged with the ratchet double gear 26 can prevent the reverse gear from rotating under the action of the resetting device when the incomplete gear 27 is rotated to the toothless portion, thereby forming with the incomplete gear 27 Engage, keeping the valve stem 3 in its current state.
  • the torque of the output shaft of the motor 1 is amplified by the stepwise transmission of the gear, thereby reducing the power required to open and close the valve, thereby reducing the current required for the switching valve.
  • the output power of the motor 1 can be controlled within a small range, so that the power supply current and voltage of the driving motor 1 can be reduced, and a small current cutoff can be realized to prevent the electric current from being excessively generated to generate an electric spark. Bringing the above-mentioned safety hazards, further improving the safety and reliability of the gas meter.
  • the motor 1 in order to prevent natural gas from corroding the circuit inside the shut-off valve, is sealingly mounted inside the inner casing 4, and a top cover is added to the gear reduction box 2, and the top cover is sealedly mounted with the gear reduction box 2; the transmission shaft 25 is sealingly connected to the driving gear 23.
  • the motor 1 is statically sealed by the seal ring 5 inside the inner casing 4.
  • the output shaft of the motor 1 is inserted into the gear reduction box 2, and a sealing ring is arranged between the output shaft of the motor 1 and the gear reduction box 2; the transmission shaft 25 is force-tightly sealed by the sealing ring 5 and mounted on the gear reduction box 2 On the top cover, and is powered by the drive gear 23.
  • the ratchet double gear 26 utilizes the principle of the ratchet gear structure to match the lock block 28 and set the ratchet teeth on the ratchet gear to tilt counterclockwise to achieve
  • the purpose of "clockwise rotation through the counterclockwise rotation of the lock block" is achieved, however, the gear fixed integrally with the ratchet gear is restrained by the ratchet gear when it is engaged with the incomplete gear 27 and the drive gear 23, respectively. That is, the forward transmission is formed with the incomplete gear 27, and the reverse engagement is performed, thereby preventing the incomplete gear 27 from rotating in the reverse direction.
  • the torsion spring can be used as the lock.
  • the block 28 and the reset means 29 mounted on the incomplete gear 27 are used to maintain the lock block 28 in a state of being engaged with the ratchet double gear 26, so that the incomplete gear 27 is automatically reset in the non-engaged state.
  • the valve opening process of the two-way non-blocking gear transmission gas meter dedicated shut-off valve in the above embodiment of the present invention is: when the output shaft of the motor 1 rotates counterclockwise and passes through the input gear 21, the transmission gear The output gear 11 transmits the torque to the driving gear 23, and the driving gear 23 drives the incomplete gear 27 to rotate counterclockwise through the gear on the ratchet double gear 26, and the eccentric column on the incomplete gear 27 drives the valve stem 3 to retract.
  • the sealing cap 31 at the starting end of the valve stem 3 leaves the air inlet 6 on the shut-off valve, that is, the shut-off valve is opened; when the incomplete gear 27 is rotated counterclockwise to the position without teeth, the incomplete gear 27 is realized from the ratchet double
  • the gear 26 is unloaded at this time, although the driving gear 23 is still driving the ratchet double gear 26 toward Rotating clockwise, but the teeth on the gear of the ratchet double gear 26 are not meshed with the teeth on the incomplete gear 27, that is, when the output shaft of the motor 1 continues to rotate counterclockwise, the incomplete gear 27 remains at that time.
  • the state, that is, the sealing cap 31 at the beginning of the valve stem 3 is always away from the intake port 6, that is, the shut-off valve is open.
  • the torsion spring mounted on the incomplete gear 27 causes it to rotate clockwise to mesh with the gear of the ratchet double gear 26, and the counterclockwise ratchet gear fixed on the ratchet double gear 26 is
  • the lock block 28 is locked under the action of the lock block 28, so that the reset torsion spring mounted on the incomplete gear 27 cannot continue to rotate the incomplete gear 27, that is, the lock block 28 locks the ratchet gear and thereby locks the ratchet double gear 26, the ratchet double
  • the gear 26 locks the incomplete gear 27 so that the valve stem 3 cannot be extended, thereby keeping the valve open.
  • the valve closing process of the two-way non-blocking gear transmission gas meter dedicated shut-off valve is: when the motor 1 rotates clockwise and passes through the input gear 21, the transmission gear 24, and The output gear 22 transmits torque to the driving gear 23, and the driving gear 23 also rotates clockwise.
  • the ratchet double gear 26 is locked by the lock block 28, under the action of the clockwise rotating force of the driving gear 23, the ratchet double The gear 26 is unlocked by the downwardly mounted lining with the driving gear 23 shaft and disengaged from the meshing with the incomplete gear 27, and the incomplete gear 27 rotates clockwise under the action of the torsion spring force, and the eccentric post above it is incomplete.
  • the gear 27 rotates to push the valve stem 3 to close the valve; and in the foregoing process, the lock block 28 also rotates around the drive gear 23 through the lining with the ratchet gear double gear, when the lock block 28 hits the inner side of the gear reduction box 2
  • the ratchet gear of the ratchet double gear 26 is disengaged, so that the valve is not blocked, and after the output shaft of the motor 1 stops rotating, the lock block 28 is restored by the torsion spring force.
  • the electromechanical valve Before the rotation, at the next startup of the motor 1 counterclockwise, the electromechanical valve remains closed.
  • the shut-off valve of the above structure ensures the safety in the leakage amount including the effective control of the internal leakage amount and the external leakage amount, and the internal leakage amount control realizes a small leakage through the two static seals and one dynamic seal of the above-mentioned shut-off valve, and the shut-off valve is ensured.
  • the amount of leakage of gas from the body into the motor cavity meets safety requirements.
  • the invention aims to realize the alarm function of the abnormal state of the IC card intelligent gas meter, and safely cut off the output gas in time, so as to prevent the occurrence of dangerous accidents such as fire and explosion, and has the undervoltage prompt and break. Electrical data recovery, anti-magnetic interference and other functions, to help users use gas meters more safely, gas companies to better carry out safety management work, reduce the occurrence of dangerous accidents.
  • the gas sales management system includes at least the following modules: Service management module: used to realize the functions of account opening, card issuance, payment, refund, exchange, transfer, account cancellation and blacklist management;
  • IC card management module used to implement tool card creation, replenishment card, IC card repair function
  • remote control module used to send wired or wireless control signals to the terminal's gas meter
  • system setting module used to implement setting administrator , menu settings, password settings, invoice format settings, serial port settings.
  • Basic data module used to implement site settings, locale settings, table type settings, payment type settings, and manufacturer-set functions
  • the gas company realizes prepayment and related management through the data transmission module.
  • the data is exchanged by wireless or wired transmission to the safely cut-off remote control smart gas meter.
  • the gas company realizes the unified management of all safety-cut remote control smart gas meters.
  • the above technical solution includes all the processes of the safety cut-off remote control smart gas meter from the acquisition of the abnormal state signal to the processing of the abnormal state when all the input abnormal states in the embodiment are included, and the safety cut-off remote control smart gas meter is detected to occur.
  • the abnormal status signal is issued, the shut-off valve is closed in time, and the LCD screen is displayed, and the buzzer is alarmed.
  • the abnormal state recovery circuit can be restored to the normal state.
  • the safety cut-off type remote control intelligent gas meter avoids the gas safety problem caused by various factors through the above-mentioned treatment of abnormal conditions, and can minimize the occurrence of major safety accidents such as fires and explosions caused by gas, and safety.
  • the cut-off remote control smart gas meter is beneficial to the gas company safety management work, and the user can use the gas meter more safely to protect people's property and life safety.
  • the safety cut-off type remote control smart gas meter when it is detected that the gas is not fully combusted, and the toxic gas is generated to reach a certain concentration, the gas supply is cut off, and the liquid crystal display and the audible alarm are displayed. Take appropriate measures to avoid respiratory discomfort and poisoning.
  • the safety cut-off remote control smart gas meter By using the safety cut-off remote control smart gas meter, it is possible to use an external seismic sensor to cut off the gas supply in time when an earthquake occurs, to avoid gas leakage accidents caused by pipe rupture or falling off.
  • the safety cut-off remote control smart gas meter By using the safety cut-off remote control smart gas meter, when the battery undervoltage condition occurs, the user is prompted to replace the battery to ensure the normal use of the gas meter functions.
  • the gas output can be turned off through the shut-off valve in real time.
  • the anti-magnetic malicious magnetic interference causes the inaccuracy of the gas meter measurement.
  • the power is off, the related operation records and data can be saved in time to prevent data loss.
  • the safety cut-off type remote control intelligent gas meter can turn off the battery when the shutdown valve is closed, the LCD displays the alarm message, and the buzzer sends an alarm signal. After the power is turned back on, the gas meter is released after the relevant abnormal state is released. Perform a self-test and resume normal use.
  • the gas company can remotely monitor, remotely control, and remotely manage the gas meters within its jurisdiction, so as to monitor the gas meters that are dangerously dangerous, and remotely lock the tables, and further strengthen the management of safe gas. .
  • the safety cut-off remote control smart gas meter In addition to the accurate metering, reliable valve control, remote real-time monitoring, remote real-time control and remote real-time management of the conventional remote intelligent gas meter, the safety cut-off remote control smart gas meter also has the alarm function of gas abnormal state, and can be timely The output gas is cut off to prevent the occurrence of dangerous accidents such as fire and explosion, and the abnormal situation in the gas use can be sent to the remote communication device through the data transmission module in real time, and transmitted to the remote gas sales management system through the remote communication device. In the middle, the gas company monitors the gas meter that has hidden dangers through the gas sales management system, and remotely performs the table lock operation, etc., further strengthens the management of safe gas, which is conducive to users' safer use of gas.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种安全切断型远控智能燃气表,包括基表体,基表体上有燃气进口与燃气出口,燃气进口上安装切断阀,燃气表还包括信号采集处理电路与安全切断型远控智能燃气表终端微电脑控制器,切断阀通过切断阀控制电路接入该控制器;通过信号采集处理电路实时采集流经基表体的燃气量,及时将其传输至该控制器,在检测到基表体输出出现小流量泄漏、异常大流量等异常状态时,能够及时关闭基表体上的切断阀,并进行报警,避免燃气泄漏过量造成燃烧或者爆炸现象,保护人们生命和财产安全。

Description

安全切断型远控智能燃气表
技术领域
本发明涉及一种燃气表, 更具体的说, 本发明主要涉及一种安全切断型远 控智能燃气表。 背景技术
远控智能燃气表与售气管理系统进行数据交换,售气管理系统通过有线或 者无线传输方式将相关控制指令、 充值数据等传输到远控智能燃气表中, 同时 远控智能燃气表中的相关信息又通过同样的传输方式返回到售气管理系统, 通 过使用远控智能燃气表及其售气管理系统, 燃气公司能够实时管理相关的远控 智能燃气表。 然而所使用的远控智能燃气表对燃气使用过程中出现有关燃气使 用安全的异常状况却没有有效、 可靠的技术手段进行安全性管理, 燃气在使用 过程中出现异常状况时, 可能产生泄漏、 着火、 爆炸等情况, 不利于燃气公司 的安全管理, 同时也对人们的生命及财产安全带来极大的隐患。 在燃气发生小 流量泄漏时, 现有的远控智能燃气表没有相关的检测手段来判断这种漏气现象, 没有有效的预设机制进行阀门的关闭及釆取图像和声音报警, 燃气的泄漏无法 得到及时处理。
现有的远控智能燃气表没有异常大流量管道切断管理及相关的报警机制, 当出现向灶具的输气管道断裂或者脱落时, 燃气的异常大流量泄漏无法得到及 时关断, 燃气散布到用户的厨房空间中, 产生燃气与空气的混合物, 很快会到 达燃气爆炸的浓度时, 存在发生爆炸及火灾的重大危险。 在人们的日常生活中, 人们往往在烹调食物时, 有其他的事情耽搁, 因而造成过长时间的对烹调用具 进行加热, 在到达一定时间段长度时, 灶具上的烹调用具可能着火燃烧, 现有 的远控智能燃气表不能对正常使用燃气的时间段的长度进行限制, 这种情况下, 可能引发火灾, 产生重大的安全事故。
外部输气管道的送气压力因某种原因可能发生变化, 现有的远控智能燃气 表无法监测这种压力变化, 当供气压力过低时, 远控智能燃气表无法进行得知, 继续向用气设备供气, 可能造成用气设备的故障, 如断火、 漏气等。
另外在远控智能燃气表使用中出现其它异常状况, 例如发生燃气泄漏切断 报警或者长期未使用时, 现有的远控智能燃气表没有相关检测手段, 无法做出 及时有效的反应, 不能保证用气安全。 因此有必要针对上述问题, 对现有远控 智能燃气表做进一步的改进, 在实现正常计量、 远程售气、 远程控制、 远程抄 表及相关管理的同时, 具备异常状况的报警功能, 并能及时的对输出燃气进行 切断, 杜绝火灾及爆炸等危险事故的产生, 利于燃气公司的相关管理与安全控 制, 利于用户更加安全的使用燃气。 发明内容
本发明的目的之一在于针对上述不足, 提供一种安全切断型远控智能燃气 表, 以期望解决现有技术中燃气使用出现异常状态时, 燃气表不能准确釆集异 常状态信息, 不能对燃气供给实施安全切断等技术问题。
为解决上述的技术问题, 本发明釆用以下技术方案:
本发明所提供的一种安全切断型远控智能燃气表, 包括基表体与数据传输 模块, 所述基表体上设有燃气进口与燃气出口, 所述燃气进口上安装有切断阀, 所述燃气表还包括信号釆集处理电路与安全切断型远控智能燃气表终端微电脑 控制器, 所述信号釆集处理电路与数据传输模块均分别接入安全切断型远控智 能燃气表终端微电脑控制器, 所述数据传输模块与远程控制端相互传输控制信 号, 所述信号釆集处理电路的釆集端通过机电信号转换装置接入基表体的机械 计数装置, 所述切断阀通过切断阀控制电路接入安全切断型远控智能燃气表终 端微电脑控制器; 用于由所述信号釆集处理电路釆集基表体内部燃气经过的流量信息, 并将 其转换为相应的电子计量脉冲信号, 输入安全切断型远控智能燃气表终端微电 脑控制器;
所述安全切断型远控智能燃气表终端微电脑控制器的内部至少预设有与基 表体对应的小流量泄漏、 异常大流量与使用时间过长的异常状态阔值范围, 用 于与来自于信号釆集处理电路的电子计量脉冲信号中包含的流量信息进行对 比, 根据对比结果判断是否通过切断阀控制电路关闭切断阀。
作为优选, 进一步的技术方案是: 所述小流量泄漏的异常状态为流经基表 体的燃气流量大于机械计数装置的始动流量, 并小于燃气用具点火流量的一半, 且持续时间超过了预设值。
更进一步的技术方案是: 所述异常大流量的异常状态为在预设的单位时间 内, 流经基表体的燃气流量超过了最大流量预设值的预设倍数。
更进一步的技术方案是: 所述使用时间过长的异常状态为流经基表体的燃 气流量在燃气正常使用流量的范围内, 但持续时间超过了预设值; 所述燃气正 常使用流量为流经基表体的燃气流量大于基表体的最小流量、 大于或等于燃气 用具的点火流量、 小于异常大流量, 且持续时间未超过预设值; 所述基表体的 最小流量为流经基表体且能够使机械计数装置准确计数的最小流量值。
更进一步的技术方案是: 所述燃气表中还包括传感器检测模块, 所述传感 器检测模块通过通信接口接入安全切断型远控智能燃气表终端微电脑控制器, 用于通过外部传感器检测燃气表外部环境的当前状态, 并将对应的环境信息传 输至传感器检测模块, 由安全切断型远控智能燃气表终端微电脑控制器从传感 器检测模块中釆集环境信息, 根据当前的环境信息判断是否通过切断阀控制电 路关闭切断阀; 所述外部传感器包括地震震感器、 燃气压力传感器、 燃气浓度 检测报警器、 复合型报警器当中的任意一种或多种。
更进一步的技术方案是: 所述燃气表中还包括欠压保护电路、 断电保护电 路、 防磁干扰电路与状态恢复电路, 所述欠压保护电路、 断电保护电路、 防磁 干扰电路与状态恢复电路均分别接入安全切断型远控智能燃气表终端微电脑控 制器, 用于在燃气表使用过程中出现欠压、 断电及磁干扰时, 由安全切断型远 控智能燃气表终端微电脑控制器控制对应的电路完成关阀、 报警及状态恢复的 操作;
所述数据传输模块为红外信号、 超声波信号、 光电信号、 微波信号、 GPRS 与 GPS 当中任意一种封装形式的无线传输模块, 或者电力载波、 光纤传输与数 据线传输当中任意一种封装形式的有线传输模块。
更进一步的技术方案是: 所述燃气表中还包括液晶屏与蜂鸣器, 所述液晶 屏与蜂鸣器也接入安全切断型远控智能燃气表终端微电脑控制器, 且至少用于 辅助安全切断型远控智能燃气表终端微电脑控制器完成报警的操作;
所述数据传输模块通过 USB接口与安全切断型远控智能燃气表终端微电脑 控制器; 所述安全切断型远控智能燃气表终端微电脑控制器还通过电子计数取 样模块与基表相连接, 且电子计数取样模块中还安装有防磁保护模块;
所述燃气表中还包括 IC卡信息交换模块, 所述 IC卡信息交换模块也接入 安全切断型远控智能燃气表终端微电脑控制器, 用于由安全切断型远控智能燃 气表终端微电脑控制器通过 IC卡信息交换模块读取 IC卡中的充值数据。
更进一步的技术方案是: 所述安全切断型远控智能燃气表终端微电脑控制 器还通过电子计数取样模块中的计数干簧管取样控制电路、 与基表体中的计数 干簧管相连接, 所述的计数干簧管至少为两个, 且呈平直定位安装在配套的定 位槽中, 用于由安全切断型远控智能燃气表终端微电脑控制器控制扣数信号, 通过计数干簧管对来自于数据传输模块的燃气充值量进行扣除; 所述计数干簧 管通过机械计数与电子计数相结合的方式计数, 其中电子计数为通过安全切断 型远控智能燃气表终端微电脑控制器控制液晶显示电路向连接的液晶显示屏传 送数据信号; 所述的安全切断型远控智能燃气表终端微电脑控制器中设有两次扣数时间 间隔的最大值与最小值。
再进一步的技术方案是: 所述切断阀包括外壳体, 所述外壳体的内部还安 装有内壳体, 所述内壳体中安装有电动机, 齿轮减速箱、 齿轮减速箱顶盖及阀 杆, 所述阀杆的其中一端上设有密封帽, 另一端上设置有连接孔, 所述齿轮减 速箱中安装有输入齿轮、 输出齿轮与主动齿轮, 所述电动机的输出轴与输入齿 轮动力连接, 输入齿轮通过多级传动齿轮与输出齿轮动力连接, 用于通过多个 轴与主动齿轮动力连接, 所述齿轮减速箱顶盖上安装有棘齿双连齿轮与不完整 齿轮, 所述棘齿双连齿轮分别与主动齿轮、 不完整齿轮相啮合, 所述不完整齿 轮上设有偏心柱, 所述偏心柱插入阀杆端部的连接孔; 所述齿轮减速箱顶盖上 还安装有锁块, 所述锁块与棘齿双连齿轮相卡合, 用于限制棘齿双连齿轮逆向 转动; 所述锁块与不完整齿轮上还均安装有复位装置。
还进一步的技术方案是: 所述电动机密封安装在内壳体的内部, 且齿轮减 速箱与齿轮减速箱顶盖, 通过密封圈静密封安装; 所述传动轴与主动齿轮密封 连接; 所述电动机在内壳体的内部通过密封圈静密封安装; 所述电动机的输出 轴伸入齿轮减速箱, 且电动机的输出轴与齿轮减速箱之间设有密封圈, 并进行 动密封安装; 所述传动轴通过密封圈增力密封安装在齿轮减速箱顶盖上, 并与 主动齿轮动力连接; 所述棘齿双连齿轮由在齿轮上方固定安装棘齿轮构成, 所 述锁块与棘齿轮相卡合, 齿轮分别与不完整齿轮和主动齿轮相啮合; 所述棘齿 轮上的棘齿朝逆时针方向倾斜, 用于在与锁块相卡合后, 仅可朝顺时针的方向 转动; 所述锁块与不完整齿轮上安装的复位装置是扭力弹簧, 用于使锁块保持 与棘齿双连齿轮相卡合的状态, 使不完整齿轮在非啮合的状态下自动复位。
与现有技术相比, 本发明的有益效果之一是: 通过信号釆集处理电路实时 釆集流经基表体的燃气量, 并及时将其传输至安全切断型远控智能燃气表表终 端微电脑控制器, 在检测到基表体输出出现小流量泄漏、 异常大流量与使用时 间过长等异常状态时, 能够及时关闭基表体上的切断阀, 并可通过液晶屏、 蜂 鸣器进行报警, 避免燃气泄漏过量, 造成燃烧或者爆炸现象, 保护人们生命和 财产安全; 同时, 安全切断型远控智能燃气表表终端微电脑控制器配合由外部 接入的各类传感器, 使得燃气表使用环境的实时情况也可成为安全切断型远控 智能燃气表表终端微电脑控制器关阀操作的触发条件之一; 并且本发明所提供 的一种安全切断型远控智能燃气表结构简单, 适于工业化生产, 易于推广。 附图说明
图 1为用于说明本发明一个实施例的燃气状态釆集处理框图;
图 2为用于说明本发明另一个实施例的结构示意框图;
图 3为用于说明本发明再一个实施例中切断阀的整体结构示意图; 图 4为用于说明本发明再一个实施例中齿轮减速箱第一拆分面结构示意图; 图 5为用于说明本发明再一个实施例中齿轮减速箱第二拆分面结构示意图; 图 6 为用于说明本发明再一实施例中主动齿轮与传动轴减速箱增力动密封 的结构示意图;
图 7 为用于说明本发明另一个实施例中的安全切断型远控智能燃气表管理 系统组成框图。 具体实施方式
下面结合附图对本发明作进一步阐述。
参考图 1 所示, 本发明的一个实施例是一种安全切断型远控智能燃气表, 包括基表体与数据传输模块, 所述基表体上设有燃气进口与燃气出口, 所述燃 气进口上安装有切断阀, 所述燃气表还包括信号釆集处理电路与安全切断型远 控智能燃气表终端微电脑控制器, 所述信号釆集处理电路与数据传输模块均分 别接入安全切断型远控智能燃气表终端微电脑控制器, 所述数据传输模块与远 程控制端相互传输控制信号, 所述信号釆集处理电路的釆集端通过机电信号转 换装置接入基表体的机械计数装置, 所述切断阀通过切断阀控制电路接入安全 切断型远控智能燃气表终端微电脑控制器;
上述燃气表结构的作用是: 由信号釆集处理电路釆集基表体内部燃气经过 的流量信息, 并将其转换为相应的电子计量脉冲信号输入安全切断型远控智能 燃气表终端微电脑控制器;
而在上述安全切断型远控智能燃气表终端微电脑控制器的内部至少预设有 与基表体对应的小流量泄漏、 异常大流量与使用时间过长的异常状态阔值范围, 也可称之为图 1 中所示的燃气异常状态监测机制; 其作用是与来自于信号釆集 处理电路的电子计量脉冲信号中包含的流量信息进行对比, 判断是否出现燃气 异常使用状态, 进一步判断出时属于哪一种异常状态, 并根据对比结果决定是 否通过切断阀控制电路关闭切断阀。
在本实施例中, 利用信号釆集处理电路实时釆集流经基表体的燃气量, 并 及时将其传输至安全切断型远控智能燃气表终端微电脑控制器, 在检测到基表 体输出出现小流量泄漏、 异常大流量及使用时间过长等异常状态时, 能够及时 关闭基表体上的切断阀, 还可选择通过液晶屏、 蜂鸣器进行报警, 避免燃气泄 漏过量, 造成燃烧或者爆炸现象, 保护人们生命和财产的安全。
由上述实施例可知,本发明中的燃气表是以容积式机械计量技术为基础(即 上述所称的基表体), 通过信号釆集处理技术、 安全切断阀技术及远程数据传输 技术、 微电脑控制器通过干簧管扣数计费技术的有机结合, 实现阀控、 异常状 态报警等安全切断功能的燃气表, 安全切断型远控智能燃气表终端微电脑控制 器中设有存储装置, 用于存储来自于数据传输模块中的燃气预付费数据。
正如上述实施例中所提到的, 信号釆集处理电路实时釆集流经基表体中的 燃气量, 其目的为判断基表体的燃气输出是否存在异常的情况, 对于该异常情 况, 发明人针对现有远控智能燃气表使用的异常情况汇总, 结合用户的使用习 惯进行了分析, 大致总结了基表体最常出现的三种异常情况, 即上述的燃气小 流量泄漏、 燃气异常大流量与燃气使用时间过长, 而在本发明中, 对于前述三 种情况的定义如下:
小流量泄漏的异常状态是指流经基表体的燃气流量大于基表体的始动流 量, 并小于燃气用具点火流量的一半, 且持续时间超过了预设值。 其中始动流 量是指流经基表体的燃气流量能使基表体进行计数的流量下限值; 燃气用具的 点火流量是指能够维持燃气灶具(一般指用于家用的燃气灶具)燃烧的流量下 限值。
异常大流量的异常状态是指在即定的单位时间内, 流经基表体的燃气流量 超过了最大流量预设值的预设倍数, 这里的预设倍数, 一般指燃气表生产厂家 设定的表端最大流量的制定倍数; 其中最大流量是指燃气表能实现准确计数的 规定流量上限, 该值由燃气表厂商按照相关技术标准设定。
使用时间过长的异常状态是指流经基表体的燃气流量在燃气正常使用流量 的阔值范围内, 但持续时间超过了预设值; 所述燃气正常使用流量为流经基表 体的燃气流量大于基表体的最小流量、 大于或等于燃气用具的点火流量、 小于 异常大流量、 且持续时间未超过预设值; 所述基表体的最小流量为流经基表体 且能够使基表体准确计数的最小流量值。
参考图 2 所示, 在本发明用于解决技术问题更加优选的一个实施例中, 出 于安全性方面的考虑, 发明人还发现即便基表体中流经的燃气未出现上述的异 常情况, 但如燃气表安装的外部环境不适宜使用燃气的话, 仍然易出现安全事 故, 因此为使燃气表在保证基表体在非异常状态下使用的情况下, 可将外部环 境中的部分参数也作为触发安全切断型远控智能燃气表终端微电脑控制器进行 关断切断阀的条件; 具体为在燃气表中增设传感器检测模块, 并将传感器检测 模块通过通信接口接入安全切断型远控智能燃气表终端微电脑控制器, 用于通 过外部传感器检测燃气表外部环境的当前状态, 并将对应的环境信息传输至传 感器检测模块, 由安全切断型远控智能燃气表终端微电脑控制器从传感器检测 模块中釆集环境信息, 根据当前的环境信息判断是否通过切断阀控制电路关闭 切断阀; 而前述的外部传感器可根据燃气表的使用场所与地区进行选择, 确定 使用一种或多种; 例如地震震感器、 燃气压力传感器、 燃气浓度检测报警器, 又或是复合型报警器等等。
上述的传感器检测模块是指连接外部传感器的检测装置, 用于将外部传感 器传递过来的信号转换成开关量输出信号, 并可将开关量输出信号传递到安全 切断型远控智能燃气表终端微电脑控制器。
更进一步的, 发明人还参考现有技术, 对于具有终端微电脑控制器的燃气 表在使用时可能出现的其他问题釆用如下的技术手段予以解决: 在燃气表中增 设欠压保护电路、 断电保护电路、 防磁干扰电路与状态恢复电路, 所述欠压保 护电路、 断电保护电路、 防磁干扰电路与状态恢复电路均分别接入安全切断型 远控智能燃气表终端微电脑控制器, 用于在燃气表使用过程中出现欠压、 断电 及磁干扰时, 由安全切断型远控智能燃气表终端微电脑控制器控制对应的电路 完成关阀、 报警及状态恢复的操作。
同时, 上述的数据传输模块最好釆用红外信号、 超声波信号、 光电信号、 微波信号、 GPRS与 GPS当中任意一种封装形式的无线传输模块, 或者电力载波、 光纤传输与数据线传输当中任意一种封装形式的有线传输模块;
优选地, 上述数据传输模块可设置 FLASH存储器, 并将 FLASH存储器连接 至少两个相互独立的传输装置, 而该传输装置釆用的无线传输是釆用红外信号、 电力载波、 光电信号、 超声波信号、 微波信号、 GPRS与 GPS当中的任意两种或 多种的组合封装, 以满足不同的数据传输需求, 拓宽燃气公司对终端燃气表的 管理范围。
同时为方便不同类型传输模块的更换, 上述数据传输模块最好通过 USB接 口与安全切断型远控智能燃气表终端微电脑控制器相连接; 而在必要时, 还可 先将上述数据传输模块先与上层多级通信设备相连接, 再通过上层多级通信设 备与售气管理系统相连接, 以保障数据传输的完整性。
另一方面, 本发明可直接以现有技术中的 IC卡智能燃气表为核心 (即 IC 卡智能燃气表中包含了上述的基表体), 即上述实施例的燃气表中还包括 IC卡 信息交换模块, 并将 IC卡信息交换模块也接入安全切断型远控智能燃气表终端 微电脑控制器, 用于由安全切断型远控智能燃气表终端微电脑控制器通过 IC卡 信息交换模块读取 IC卡中的充值数据, 作为本发明进行数据传输的第二途径。
上述与 IC卡信息交换模块进行信息交互的是可以是存储器卡、 逻辑加密卡 与 CPU卡当中的任意一种。
另外, 在上述异常情况触发安全切断型远控智能燃气表终端微电脑控制器, 使其执行关闭切断阀的操作后, 为及时提醒用户知晓, 还可在燃气表上设计报 警的功能; 因此在本实施例中再在燃气表中增设液晶屏与蜂鸣器, 并将液晶屏 与蜂鸣器也接入安全切断型远控智能燃气表终端微电脑控制器, 且至少用于辅 助安全切断型远控智能燃气表终端微电脑控制器完成报警的操作, 即当燃气表 出现上述任意一种异常状态时, 在进行关阀的同时, 还通过蜂鸣器与液晶屏进 行声光报警;
为实现电子计数及扣数, 上述安全切断型远控智能燃气表终端微电脑控制 器还通过电子计数取样模块与基表相连接, 且电子计数取样模块中还安装有防 磁保护模块, 以避免磁性对其使用中造成的干扰。
同时发明人还参考现有远控智能燃气表预付费扣数计费的实现方式, 将上 述安全切断型远控智能燃气表终端微电脑控制器通过电子计数取样模块中的计 数干簧管取样控制电路、 与基表体中的计数干簧管相连接, 并将计数干簧管设 置为至少两个, 且呈平直定位安装在配套的定位槽中, 最好再在定位槽中安装 电路板, 用于由安全切断型远控智能燃气表终端微电脑控制器控制扣数信号, 通过计数干簧管对来自于数据传输模块的燃气充值量进行扣除; 所述计数干簧 管通过机械计数与电子计数相结合的方式计数, 其中电子计数为通过安全切断 型远控智能燃气表终端微电脑控制器控制液晶显示电路向连接的液晶显示屏传 送数据信号; 再在安全切断型远控智能燃气表终端微电脑控制器中设置两次扣 数时间间隔的最大值与最小值。
而为便于使用, 减少燃气表在实际使用中可能存在的长待机计量失真的情 形, 在上述安全切断型远控智能燃气表终端微电脑控制器中还设置有最大待机 时间值, 通过远控智能燃气表终端微电脑控制器初始化来克服前述失真的问题; 同时远控智能燃气表终端微电脑控制器中还设置有时钟可控制器, 远控智能燃 气表终端微电脑控制器还可借助于时钟可控制器计时控制电阀控制电路向机电 阀发送控制信号。
进一步的, 发明人经过试验还发现, 除上述列举的异常情形外, 切断阀本 身所存在的安全隐患也将严重影响燃气表使用的安全性, 例如为切断阀提供动 力的电源电流过大, 易产生电火花; 如燃气发生泄漏, 安全切断型远控智能燃 气表终端微电脑控制器检测到该异常状态进行关阀时, 控制切断阀关闭, 在切 断阀关闭的过程中, 一旦因电流过大而产生电火花则容易点燃燃气甚至发生爆 炸; 另一方面, 切断阀在关闭后的密封性高低也将决定燃气表关阀后是否能处 于完全安全的状态;
参考图 3、 图 4及图 5所示, 基于上述实际情况, 发明人还对上述实施例中 的切断阀结构做了进一步的改进, 该切断阀用于在接收到远控智能燃气表终端 微电脑控制器的指令时进行安全开关阀。
而切断阀的具体结构为本发明用于解决技术问题更加优选的另一个实施 例, 其中包括外壳体, 并且在外壳体的内部安装有内壳体 4, 在内壳体 4中安装 有作为切断阀的动力部件的电动机 1, 以及齿轮减速箱 2、 齿轮减速箱顶盖 7及 阀杆 3, 其中阀杆 3的其中一端上设有密封帽 31, 另一端上设置有连接孔 32。 前述的齿轮减速箱 2中需要安装输入齿轮 21、 输出齿轮 11与主动齿轮 23, 将 电动机 1的输出轴与输入齿轮 21动力连接, 输入齿轮 21通过多级传动齿轮 24 与输出齿轮 22动力连接, 用于通过多级传动齿轮 24将输入齿轮 21的动力增大 后传输至输出齿轮 22, 输出齿轮 11还通过传动轴 25与主动齿轮 23动力连接; 在此基础之上, 前述的齿轮减速箱顶盖 7上需安装棘齿双连齿轮 26与不完 整齿轮 27, 所述棘齿双连齿轮 26分别与主动齿轮 23、 不完整齿轮 27相啮合, 所述不完整齿轮 27上设有偏心柱 271, 所述偏心柱 271插入阀杆 3端部的连接 孔 32, 所述齿轮减速箱顶盖 7上还安装有锁块 28, 所述锁块 28与棘齿双连齿 轮 26相卡合, 用于限制棘齿双连齿轮 26逆向转动; 所述锁块 28与不完整齿轮 27上还均安装有复位装置 29。
在本实施例中, 电动机 1带动输入齿轮 21转动, 输入齿轮 21通过与其啮 合的多级传动齿轮 24将电动机 1输出轴的扭矩放大, 进而传递至输出齿轮 22, 输出齿轮将扭矩通过传动轴 25传递至主动齿轮 23, 由于主动齿轮 23带动棘齿 双连齿轮 26转动, 进而由棘齿双连齿轮 26带动不完整齿轮 27转动, 当不完整 齿轮 27转动时, 偏心柱 271则可带动阀杆 3前后移动, 为保证偏心柱 271环向 运动施加给阀杆 3的力使其发生直线位移, 可将阀杆 3端部的连接孔 32设置为 条形孔, 使偏心柱 271可在条形孔中移动, 与棘齿双连齿轮 26相卡合的锁块 28 可在不完整齿轮 27旋转到无齿的部分时,防止其在复位装置的作用下反向转动, 进而与不完整齿轮 27形成卡合, 使阀杆 3保持当前的状态。
通过齿轮逐级传动的方式, 将电动机 1 输出轴的扭矩放大, 从而降低开关 阀时所需的使动力, 进而降低开关阀所需电流。 在实际应用中, 可将电动机 1 的输出动力可控制在一个较小的范围内, 使驱动电动机 1 运行的电源电流及电 压也可得到降低, 实现小电流切断, 防止电流过大产生电火花, 带来上述的安 全隐患, 进一步提高了燃气表的安全性与可靠性。
在本发明的另一实施例中, 为防止天然气对切断阀内部的线路造成腐蚀, 最好将上述电动机 1密封安装在内壳体 4的内部, 且在齿轮减速箱 2上增设顶 盖, 且顶盖与齿轮减速箱 2密封安装; 所述传动轴 25与主动齿轮 23密封连接。 更进一步的, 参考图 6 所示, 发明人认为防止燃气对电动机内部造成腐蚀更加 优选的技术方案为在前述手段的基础上, 将电动机 1在内壳体 4的内部通过密 封圈 5静密封安装; 将电动机 1的输出轴伸入齿轮减速箱 2, 且电动机 1的输出 轴与齿轮减速箱 2之间设有密封圈; 所述传动轴 25通过密封圈 5增力密封安装 在齿轮减速箱 2的顶盖上, 并与主动齿轮 23动力连接。
正如上述所提到的, 棘齿双连齿轮 26正是利用了棘齿轮结构的原理, 使其 锁块 28相配合, 并将棘齿轮上的棘齿设置为朝逆时针方向倾斜, 实现其与锁块 之间 "顺时针旋转通过, 逆时针旋转卡合的" 目的, 然而与棘齿轮固定为一体 的齿轮则受到棘齿轮的约束, 当其分别与不完整齿轮 27和主动齿轮 23相啮合 时, 即与不完整齿轮 27形成正向传动, 反向卡合, 进而防止不完整齿轮 27反 向转动。
参考图 5 所示, 在发明用于解决技术问题更加优选的一个实施例中, 为使 上述的锁块 28与不完整齿轮 27在电动机 1停止运行后可顺利复位, 可釆用扭 力弹簧作为锁块 28与不完整齿轮 27上安装的复位装置 29,用于使锁块 28保持 与棘齿双连齿轮 26相卡合的状态, 使不完整齿轮 27在非啮合的状态下自动复 位。
参考图 4及图 5所示, 本发明上述实施例中的双向无堵转齿轮传动燃气表 专用切断阀的开阀过程为: 当电动机 1的输出轴逆时针转动并通过输入齿轮 21、 传动齿轮 24及输出齿轮 11将扭矩传递至主动齿轮 23,主动齿轮 23通过棘齿双 连齿轮 26上的齿轮带动不完整齿轮 27逆时针旋转, 不完整齿轮 27上的偏心柱 带动阀杆 3缩回, 此时阀杆 3起始端的密封帽 31离开切断阀上的进气口 6, 即 切断阀打开; 当不完整齿轮 27逆时针旋转到无齿的位置时即实现不完整齿轮 27 从棘齿双连齿轮 26上卸载, 此时虽然主动齿轮 23还在带动棘齿双连齿轮 26朝 顺时针方向转动, 但棘齿双连齿轮 26的齿轮上的齿未与不完整齿轮 27上的齿 相啮合, 即在电动机 1的输出轴持续逆时针转动时, 不完整齿轮 27始终保持在 该状态, 即阀杆 3起始端的密封帽 31始终远离进气口 6, 即切断阀阀呈开启状 态。 当电动机 1停止转动时, 不完整齿轮 27上安装的扭力弹簧带动其顺时针转 动与棘齿双连齿轮 26的齿轮相啮合, 而棘齿双连齿轮 26上固定的逆时针方向 的棘齿轮在锁块 28的作用下锁紧, 使得不完整齿轮 27上安装的复位扭力弹簧 不能继续使不完整齿轮 27转动, 即锁块 28锁住棘齿轮进而锁住棘齿双连齿轮 26, 棘齿双连齿轮 26锁住不完整齿轮 27, 使阀杆 3不能伸出, 进而使阀门保持 开启状态。
同样, 根据图 4及图 5所示, 本发明上述实施例的双向无堵转齿轮传动燃 气表专用切断阀的关阀过程为: 当电动机 1顺时针转动并通过输入齿轮 21、 传 动齿轮 24及输出齿轮 22将扭矩传递至主动齿轮 23,主动齿轮 23也顺时针旋转, 此时由于棘齿双连齿轮 26被锁块 28锁住, 在主动齿轮 23顺时针旋转力的作用 下, 棘齿双连齿轮 26通过下方安装的衬板随主动齿轮 23轴旋转并脱离与不完 整齿轮 27的啮合实现解锁, 不完整齿轮 27在扭簧力的作用下顺时针转动, 其 上方的偏心柱随不完整齿轮 27转动而推动阀杆 3关闭阀门; 而在前述过程中锁 块 28也通过衬板随棘齿轮双连齿轮绕主动齿轮 23轴旋转, 当锁块 28碰到齿轮 减速箱 2的内侧面时,脱开棘齿双连齿轮 26的棘齿轮实现卸载,使关阀无堵转, 电动机 1的输出轴停止转动后, 在扭簧力的作用下使锁块 28复位, 在电动机 1 的下次启动逆时针转动前, 机电阀始终保持关闭状态。
上述结构的切断阀在泄漏量上保证安全性包括内泄漏量和外泄漏量的有效 控制, 而内泄漏量控制通过上述切断阀的两个静密封和一个动密封实现极小泄 漏, 保证切断阀体内的气体泄漏到电动机腔体里的泄漏量符合安全性要求。
本发明旨在实现 IC卡智能燃气表异常状态的报警功能, 并及时的对输出燃 气进行安全切断, 杜绝火灾及爆炸等危险事故的产生, 同时具备欠压提示、 断 电数据恢复、 防磁干扰等功能, 利于用户更加安全的使用燃气表, 燃气公司更 好的开展安全管理工作, 减少危险事故的发生。
参考图 7 所示, 通过上述的数据传输模块, 主站售气管理系统完成与安全 切断型智能燃气表之间的数据交换。 该售气管理系统中至少包括以下模块: 业务管理模块: 用于实现开户, 发卡, 缴费, 退费, 换表, 过户, 销户拆 表以及黑名单管理的功能;
IC卡管理模块: 用于实现工具卡制作, 补卡, IC卡修复的功能; 远程控制模块: 用于向终端的燃气表发送有线或无线的控制信号; 系统设置模块: 用于实现设置管理员, 菜单设置, 密码设置, 发票格式设 置, 串口设置的功能。
基础数据模块: 用于实现站点设置, 区域设置, 表类型设置, 缴费类型设 置, 生产厂家设置的功能;
再结合图 2 所示, 在安全切断型远控智能燃气表组成的系统中, 燃气公司 通过数据传输模块实现预付费及相关管理。 通过无线或有线传输方式将数据传 送到安全切断型远控智能燃气表中, 从而实现数据交换。 燃气公司通过该方式 实现所有安全切断型远控智能燃气表的统一管理。
上述技术方案中包含了本实施例中所有的输入异常状态时, 安全切断型远 控智能燃气表从获取异常状态信号到处理异常状态的全部过程, 安全切断型远 控智能燃气表在检测到发生异常状态信号时, 及时的对切断阀实施关闭, 同时 通过液晶屏进行显示, 并通过蜂鸣器报警, 在所有异常状态消除时, 可通过异 常状态恢复电路恢复到正常状态。
安全切断型远控智能燃气表通过上述对异常状态的处理方式避免了多种因 素造成的燃气用气安全问题, 能在最大程度上减少燃气引起的火灾、 爆炸等重 大安全事故的发生, 通过安全切断型远控智能燃气表, 利于燃气公司燃气安全 管理工作, 用户能更加安全的使用燃气表, 保障人们财产及生命安全。 在本发明中, 通过使用安全切断型远控智能燃气表, 能够在检测到有燃气 未充分燃烧, 产生有毒气体达到一定的浓度时, 切断燃气供应, 并通过液晶屏 显示及声音报警, 用户可釆取相应的措施, 避免出现呼吸管道不适、 中毒现象。
通过使用安全切断型远控智能燃气表, 能够在外部供气压力过低时, 切断 全规范的使用燃气设备。
通过使用安全切断型远控智能燃气表, 能够使用外接的地震震感器在地震 发生时, 及时的切断供气, 避免因管道破裂或者脱落带来的燃气泄漏事故。
通过使用安全切断型远控智能燃气表, 在出现电池欠压状态时, 提示用户 更换电池, 保证燃气表各项功能的正常使用, 在出现磁干扰状态时, 能实时的 通过切断阀关闭燃气输出, 防磁恶意的磁干扰造成燃气表计量的不准确, 在断 电状态时, 能够及时的保存相关操作记录和数据, 防止数据的丟失。
安全切断型远控智能燃气表能够在发生切断阀关闭, 液晶屏显示报警信息、 蜂鸣器发出报警信号时, 能够通过中断电池供电, 重新上电后, 燃气表在相关 的异常状态解除后, 进行自检, 恢复在正常使用的状态。
燃气公司可以远程实时监测、 远程实时控制、 远程实时管理所辖范围内的 燃气表, 做到对发生危险隐患的燃气表进行重点监控, 远程进行表锁定操作等, 进一步加强对安全用气的管理。
安全切断型远控智能燃气表除了具备常规远程智能燃气表的精确计量、 可 靠阀控、 远程实时监测、 远程实时控制、 远程实时管理外, 还具备了燃气使用 异常状态的报警功能, 并能及时的对输出燃气进行切断, 杜绝火灾及爆炸等危 险事故的产生, 并可以实时的将燃气使用中的异常情况通过数据传输模块发送 到远程通信设备中, 通过远程通信设备传递到远程售气管理系统中, 燃气公司 通过售气管理系统对发生危险隐患的燃气表进行重点监控, 远程进行表锁定操 作等, 进一步加强对安全用气的管理, 利于用户更加安全的使用燃气。 除上述以外, 还需要说明的是在本说明书中所谈到的 "一个实施例"、 "另 一个实施例"、 "实施例" 等, 指的是结合该实施例描述的具体特征、 结构或者 特点包括在本申请概括性描述的至少一个实施例中。 在说明书中多个地方出现 同种表述不是一定指的是同一个实施例。 进一步来说, 结合任一实施例描述一 个具体特征、 结构或者特点时, 所要主张的是结合其他实施例来实现这种特征、 结构或者特点也落在本发明的范围内。
尽管这里参照本发明的多个解释性实施例对本发明进行了描述, 但是, 应 该理解, 本领域技术人员可以设计出很多其他的修改和实施方式, 这些修改和 实施方式将落在本申请公开的原则范围和精神之内。 更具体地说, 在本申请公 开、 附图和权利要求的范围内, 可以对主题组合布局的组成部件和 /或布局进行 多种变型和改进。 除了对组成部件和 /或布局进行的变型和改进外, 对于本领域 技术人员来说, 其他的用途也将是明显的。

Claims

权 利 要 求 书
1、 一种安全切断型远控智能燃气表, 包括基表体与数据传输模块, 所述 基表体上设有燃气进口与燃气出口, 所述燃气进口上安装有切断阀, 其特征在 于: 所述燃气表还包括信号釆集处理电路与安全切断型远控智能燃气表终端微 电脑控制器,所述信号釆集处理电路与数据传输模块均分别接入安全切断型远 控智能燃气表终端微电脑控制器,所述数据传输模块与远程控制端相互传输控 制信号,所述信号釆集处理电路的釆集端通过机电信号转换装置接入基表体的 机械计数装置,所述切断阀通过切断阀控制电路接入安全切断型远控智能燃气 表终端微电脑控制器;
用于由所述信号釆集处理电路釆集基表体内部燃气经过的流量信息,并将 其转换为相应的电子计量脉冲信号,输入安全切断型远控智能燃气表终端微电 脑控制器;
所述安全切断型远控智能燃气表终端微电脑控制器的内部至少预设有与 基表体对应的小流量泄漏、 异常大流量与使用时间过长的异常状态阔值范围, 用于与来自于信号釆集处理电路的电子计量脉冲信号中包含的流量信息进行 对比, 根据对比结果判断是否通过切断阀控制电路关闭切断阀。
2、 根据权利要求 1所述的安全切断型远控智能燃气表, 其特征在于: 所 述小流量泄漏的异常状态为流经基表体的燃气流量大于机械计数装置的始动 流量, 并小于燃气用具点火流量的一半, 且持续时间超过了预设值。
3、 根据权利要求 1所述的安全切断型远控智能燃气表, 其特征在于: 所 述异常大流量的异常状态为在预设的单位时间内,流经基表体的燃气流量超过 了最大流量预设值的预设倍数。
4、 根据权利要求 2或 3所述的安全切断型远控智能燃气表, 其特征在于: 所述使用时间过长的异常状态为流经基表体的燃气流量在燃气正常使用流量 的范围内, 但持续时间超过了预设值; 所述燃气正常使用流量为流经基表体的 燃气流量大于基表体的最小流量、 大于或等于燃气用具的点火流量、 小于异常 大流量, 且持续时间未超过预设值; 所述基表体的最小流量为流经基表体且能 够使机械计数装置准确计数的最小流量值。
5、 根据权利要求 1所述的安全切断型远控智能燃气表, 其特征在于: 所 述燃气表中还包括传感器检测模块,所述传感器检测模块通过通信接口接入安 全切断型远控智能燃气表终端微电脑控制器,用于通过外部传感器检测燃气表 外部环境的当前状态, 并将对应的环境信息传输至传感器检测模块, 由安全切 断型远控智能燃气表终端微电脑控制器从传感器检测模块中釆集环境信息,根 据当前的环境信息判断是否通过切断阀控制电路关闭切断阀; 所述外部传感器 包括地震震感器、 燃气压力传感器、 燃气浓度检测报警器、 复合型报警器当中 的任意一种或多种。
6、根据权利要求 1或 5所述的安全切断型远控智能燃气表, 其特征在于: 所述燃气表中还包括欠压保护电路、 断电保护电路、 防磁干扰电路与状态恢复 电路, 所述欠压保护电路、 断电保护电路、 防磁干扰电路与状态恢复电路均分 别接入安全切断型远控智能燃气表终端微电脑控制器,用于在燃气表使用过程 中出现欠压、 断电及磁干扰时, 由安全切断型远控智能燃气表终端微电脑控制 器控制对应的电路完成关阀、 报警及状态恢复的操作;
所述数据传输模块为红外信号、 超声波信号、 光电信号、 微波信号、 GPRS 与 GPS当中任意一种封装形式的无线传输模块, 或者电力载波、 光纤传输与数 据线传输当中任意一种封装形式的有线传输模块。
7、 根据权利要求 6所述的安全切断型远控智能燃气表, 其特征在于: 所 述燃气表中还包括液晶屏与蜂鸣器,所述液晶屏与蜂鸣器也接入安全切断型远 控智能燃气表终端微电脑控制器,且至少用于辅助安全切断型远控智能燃气表 终端微电脑控制器完成报警的操作; 所述数据传输模块通过 USB接口与安全切断型远控智能燃气表终端微电脑 控制器相连接; 所述安全切断型远控智能燃气表终端微电脑控制器还通过电子 计数取样模块与基表相连接, 且电子计数取样模块中还安装有防磁保护模块; 所述燃气表中还包括 IC卡信息交换模块,所述 I C卡信息交换模块也接入 安全切断型远控智能燃气表终端微电脑控制器,用于由安全切断型远控智能燃 气表终端微电脑控制器通过 IC卡信息交换模块读取 IC卡中的充值数据。
8、 根据权利要求 7述的安全切断型远控智能燃气表, 其特征在于: 所述 安全切断型远控智能燃气表终端微电脑控制器还通过电子计数取样模块中的 计数干簧管取样控制电路、 与基表体中的计数干簧管相连接, 所述的计数干簧 管至少为两个, 且呈平直定位安装在配套的定位槽中, 用于由安全切断型远控 智能燃气表终端微电脑控制器控制扣数信号,通过计数干簧管对来自于数据传 输模块的燃气充值量进行扣除; 所述计数干簧管通过机械计数与电子计数相结 合的方式计数,其中电子计数为通过安全切断型远控智能燃气表终端微电脑控 制器控制液晶显示电路向连接的液晶显示屏传送数据信号;
所述的安全切断型远控智能燃气表终端微电脑控制器中设有两次扣数时 间间隔的最大值与最小值。
9、 根据权利要求 1所述的安全切断型远控智能燃气表, 其特征在于: 所 述切断阀包括外壳体,所述外壳体的内部还安装有内壳体(4 ),所述内壳体(4 ) 中安装有电动机(1 ), 齿轮减速箱 (2 )、 齿轮减速箱顶盖 (7 )及阀杆(3 ), 所述阀杆( 3 )的其中一端上设有密封帽( 31 ), 另一端上设置有连接孔( 32 ), 所述齿轮减速箱( 2 )中安装有输入齿轮( 21 )、输出齿轮( 22 )与主动齿轮( 23 ), 所述电动机( 1 ) 的输出轴与输入齿轮( 21 )动力连接, 输入齿轮( 21 )通过 多级传动齿轮(24 )与输出齿轮(22 )动力连接, 用于通过多个传动齿轮(24 ) 将输入齿轮( 21 ) 的动力增大后传输至输出齿轮( 22 ), 所述输出齿轮( 11 ) 还通过传动轴 ( 25 ) 与主动齿轮(23)动力连接, 所述齿轮减速箱顶盖 (7 ) 上安装有棘齿双连齿轮( 26 ) 与不完整齿轮( 1Ί ), 所述棘齿双连齿轮( 26 ) 分别与主动齿轮( 23 ), 不完整齿轮( 27 )相啮合, 所述不完整齿轮( 27 )上 设有偏心柱( 271 ), 所述偏心柱( 271 )插入阀杆( 3 )端部的连接孔( 32 ); 所述齿轮减速箱顶盖( 7 )上还安装有锁块( 28 ), 所述锁块( 28 )与棘齿双连 齿轮( 26 )相卡合, 用于限制棘齿双连齿轮( 26 )逆向转动; 所述锁块( 28 ) 与不完整齿轮( 27 )上还均安装有复位装置 ( 29 )。
10、 根据权利要求 8所述的安全切断型远控智能燃气表, 其特征在于: 所 述电动机(1 ) 密封安装在内壳体(4 ) 的内部, 且齿轮减速箱 (2) 与齿轮减 速箱顶盖 (7), 通过密封圈静密封安装; 所述传动轴(25 )与主动齿轮(23) 密封连接;
所述电动机(1 )在内壳体(4) 的内部通过密封圈静密封安装;
所述电动机( 1 )的输出轴伸入齿轮减速箱 ( 2 ), 且电动机( 1 )的输出轴 与齿轮减速箱 (2)之间设有密封圈, 并进行动密封安装; 所述传动轴 (25) 通过密封圈 ( 5 )增力密封安装在齿轮减速箱顶盖( 7 )上, 并与主动齿轮 ( 23 ) 动力连接;
所述棘齿双连齿轮( 26 )由在齿轮上方固定安装棘齿轮构成,所述锁块( 28 ) 与棘齿轮相卡合, 齿轮分别与不完整齿轮(27 )和主动齿轮(23)相啮合; 所述棘齿轮上的棘齿朝逆时针方向倾斜, 用于在与锁块(28)相卡合后, 仅可朝顺时针的方向转动;
所述锁块( 28 )与不完整齿轮( 27 )上安装的复位装置( 19 )是扭力弹簧, 用于使锁块( 28 )保持与棘齿双连齿轮( 26 )相卡合的状态,使不完整齿轮( 27 ) 在非啮合的状态下自动复位。
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