CN103471675A - Cutting type diaphragm gas meter - Google Patents
Cutting type diaphragm gas meter Download PDFInfo
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- CN103471675A CN103471675A CN2013104568508A CN201310456850A CN103471675A CN 103471675 A CN103471675 A CN 103471675A CN 2013104568508 A CN2013104568508 A CN 2013104568508A CN 201310456850 A CN201310456850 A CN 201310456850A CN 103471675 A CN103471675 A CN 103471675A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a cutting type diaphragm gas meter and belongs to a gas meter. The cutting type diaphragm gas meter comprises a base meter body, wherein a gas inlet and a gas outlet are arranged on the base meter body; a cutting valve is mounted at the gas inlet; the gas meter further comprises a signal acquisition treating circuit and a cutting type diaphragm gas meter terminal microcomputer controller; the signal acquisition treating circuit is connected with the cutting type diaphragm gas meter terminal microcomputer controller; the cutting valve is connected with the cutting type diaphragm gas meter terminal microcomputer controller through a cutting valve control circuit; the signal acquisition treating circuit is used for acquiring the flow of fuel gas flowing by the base meter body in real time and timely transmitting to the cutting type diaphragm gas meter terminal microcomputer controller; and when the abnormal states, such as small flow leakage, abnormal mass flow and over long service time, of the output of the base meter body are detected, the cutting valve on the base meter body is timely turned off and a liquid crystal display screen and a buzzer are utilized to alarm, so that the burning or explosion phenomenon caused by excessive leakage of the fuel gas is avoided and the life and property of people are protected.
Description
Technical field
The present invention relates to a kind of gas meter, flow meter, in particular, the present invention relates generally to a kind of cut-off type diaphragm gas meter.
Background technology
Along with the construction of China's gas works constantly is tending towards perfect, the range of application of combustion gas is significantly widened, realized popularizing in a big way, the resident increases gradually for the use of combustion gas, and the diaphragm gas meter used is ineffective to the abnormality occurred in the combustion gas use procedure, embodiment is not processed reliably, when combustion gas in use abnormality occurs, may produce leakage, catch fire, the situation such as blast, the safe management of natural gas that is unfavorable for gas company, also bring great hidden danger to people's life and property safety simultaneously.
General diaphragm gas meter is owing to not possessing effective acquisition abnormity status information, and the pipe safety cutting function, in use, when the gas leakage that gas-fired equipment occurs, overtime, during by problems such as gas, will produce major safety risks.
When combustion gas generation low discharge leaks, diaphragm gas meter tends to occur the phenomenon of Traffic Anomaly thereupon, the gas flow rate of diaphragm gas meter of flowing through is very slow, in this case, if diaphragm gas meter does not have relevant detection means to judge this gas leak phenomenon, there is no effectively to preset mechanism and carry out the safety shutdown of valve and take image and audible alarm, the leakage of combustion gas can't be effectively addressed.
When occurring to the gas pipe line fracture of kitchen range or coming off, the output tolerance in the unit interval on diaphragm gas meter will increase sharply, the maximum flow arranged considerably beyond diaphragm gas meter itself, at this moment, if diaphragm gas meter does not have the safety cut-off management of abnormal large flow pipe road and relevant alarm mechanism, the abnormal large flow of combustion gas leaks and can't be turn-offed in time, combustion gas spreads in user's kitchen space, produce the potpourri of combustion gas and air, when arriving the density of gas explosion, if once spark ignition is arranged, bring danger will to people's life and property safety.
When the user uses combustion gas to forget to close, diaphragm gas meter can detect normal tolerance output in a long-time section, if the length less than the time period to normal use combustion gas is limited, when occurring using combustion gas for a long time, can not carry out gas safety cut-off and report to the police, there is the kitchen range burned for long time, make the mess kit ignition on kitchen range, produce the risk of great security incident.
Powerup issue in use also often appears in diaphragm gas meter, as when occurring that cell voltage is too low, if there is no warning function, can not change in time battery, causes the gas meter function defect; When without power-off protection function, the data in gas meter, flow meter may can not be recovered after powering on, and the management of gas company is brought inconvenience.
Diaphragm gas meter in use may be subject to magnetic interference, when there is no antimagnetic function, while being subject to magnetic interference, causes the electronic measurement of gas meter, flow meter mistake to occur, and the reliability of data wrecks.
Therefore be necessary for the problems referred to above, the diaphragm gas meter of existing structure is done to further improvement.
Summary of the invention
One of purpose of the present invention is for above-mentioned deficiency, a kind of cut-off type diaphragm gas meter is provided, while with combustion gas in expectation solution prior art, in using, abnormality occurring, gas meter, flow meter is the acquisition abnormity status information accurately, can not implement to fuel gas supply the technical matterss such as safety cut-off.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
A kind of cut-off type diaphragm gas meter provided by the present invention, comprise the base table body, described base table body is provided with fuel gas inlet and gas outlet, on described fuel gas inlet, stop valve is installed, described gas meter, flow meter also comprises signal acquisition processing circuit and cut-off type diaphragm gas meter terminal microcomputer controller, described signal acquisition processing circuit access cut-off type diaphragm gas meter terminal microcomputer controller, the mechanical counting device of the collection terminal access base table body of described signal acquisition processing circuit, described stop valve is by stop valve control circuit access cut-off type diaphragm gas meter terminal microcomputer controller,
For gathered the flow information of the inner combustion gas process of base table body by described signal acquisition processing circuit, and be converted into corresponding electronic measurement pulse signal, input cut-off type diaphragm gas meter terminal microcomputer controller;
The inside of described cut-off type diaphragm gas meter terminal microcomputer controller at least is preset with long abnormality threshold range of the low discharge leakage corresponding with the base table body, abnormal large flow and service time, the flow information that is used for comprising with the electronic measurement pulse signal that comes from signal acquisition processing circuit is contrasted, and according to comparing result, judges whether to close stop valve by the stop valve control circuit.
As preferably, further technical scheme is: the abnormality that described low discharge leaks is that the flow through gas flow of base table body is greater than the flow that makes of base table body, and is less than light a fire half of flow of gas appliance, and the duration has surpassed preset value.
Further technical scheme is: the abnormality of described abnormal large flow is within the unit interval, and the gas flow of the base table body of flowing through has surpassed 1.2 times of maximum flow preset value.
Further technical scheme is: described service time, long abnormality was to flow through the gas flow of base table body in the threshold range of the normal use traffic of combustion gas, but the duration has surpassed preset value; The normal use traffic of described combustion gas be flow through the gas flow of base table body be greater than the base table body minimum flow, be more than or equal to gas appliance the igniting flow, be less than abnormal large flow and the duration surpasses preset value; The minimum flow of described base table body is the base table body and can make the minimum stream value of base table body accurate counting of flowing through.
Further technical scheme is: also comprise the sensor detection module in described gas meter, flow meter, described sensor detection module access cut-off type diaphragm gas meter terminal microcomputer controller, for detect the current state of gas meter, flow meter external environment condition by external sensor, and corresponding environmental information is transferred to the sensor detection module, gather environmental information by cut-off type diaphragm gas meter terminal microcomputer controller from the sensor detection module, judge whether to close stop valve by the stop valve control circuit according to current environmental information; Described external sensor comprise in the middle of Earthquake sensor, gaseous-pressure sensor, gas concentration detection alarm device, compound alarm any one or multiple.
Further technical scheme is: also comprise under-voltage protecting circuit, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit in described gas meter, flow meter; described under-voltage protecting circuit, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit access cut-off type diaphragm gas meter terminal microcomputer controller respectively; when, outage under-voltage for occurring in the gas meter, flow meter use procedure and magnetic interference, control corresponding circuit by cut-off type diaphragm gas meter terminal microcomputer controller and complete the operation of closing valve, warning and recovering state.
Further technical scheme is: also comprise liquid crystal display and hummer in described gas meter, flow meter, described liquid crystal display and hummer also access cut-off type diaphragm gas meter terminal microcomputer controller, and at least for auxiliary cut-off type diaphragm gas meter terminal microcomputer controller, complete the operation of warning.
Further technical scheme is: described stop valve comprises shell body, the inside of described shell body also is equipped with inner housing, in described inner housing, motor is installed, gear reduction box, gear reduction box top cover and valve rod, a wherein end of described valve rod is provided with sealing cap, be provided with connecting hole on the other end, in described gear reduction box, input gear is installed, output gear and driving gear, the output shaft of described motor is connected with input gear power, input gear is connected with output gear power by the Multi-stage transmission gear, transfer to output gear after by a plurality of transmission gears, the power of input gear being increased, described output gear also is connected with driving gear power by transmission shaft, ratchet doubly-linked gear and imperfect gear are installed on described gear reduction box top cover, described ratchet doubly-linked gear respectively with driving gear, imperfect gear is meshed, described imperfect gear is provided with biasing post, described biasing post inserts the connecting hole of valve rod end, on described gear reduction box top cover, lock dog also is installed, described lock dog and ratchet doubly-linked gear fasten, for limiting ratchet doubly-linked gear backwards rotation, resetting means also all is installed on described lock dog and imperfect gear.
Further technical scheme is: the sealing of described motor is arranged on the inside of inner housing, and gear reduction box is provided with top cover, and top cover and gear reduction box are installed by sealing; Described transmission shaft and driving gear are tightly connected;
Above-mentioned motor is installed by the O-ring seal static seal in the inside of inner housing;
The output shaft of above-mentioned motor stretches into gear reduction box, and is provided with O-ring seal between the output shaft of motor and gear reduction box; Described transmission shaft is arranged on the top cover of gear reduction box by the sealing of O-ring seal reinforcement, and is connected with driving gear power;
Further technical scheme is: described ratchet doubly-linked gear consists of fixed installation ratchet-gear wheel above gear, and described lock dog and ratchet-gear wheel fasten, and gear is meshed with imperfect gear and driving gear respectively;
Ratchet on above-mentioned ratchet-gear wheel counterclockwise tilts, and for after fastening with lock dog, only can rotate towards clockwise direction;
The resetting means of installing on above-mentioned lock dog and imperfect gear is torque spring, for making lock dog, keeps the state fastened with ratchet doubly-linked gear, and imperfect gear is automatically reset under the state of non-engagement.
Compared with prior art, one of beneficial effect of the present invention is: by the flow through gas quantity of base table body of signal acquisition processing circuit Real-time Collection, and transmit it in time cut-off type diaphragm gas meter terminal microcomputer controller, detecting that the base table body occurs that low discharge is revealed, when abnormal large flow and the abnormality such as service time is long, can close in time the stop valve on the base table body, and can be reported to the police by liquid crystal display, hummer, avoid gas leakage excessive, cause burning or explosion phenomenon, protection people safety of life and property; Simultaneously, cut-off type diaphragm gas meter terminal microcomputer controller coordinates the various kinds of sensors by the outside access, makes the real-time condition of gas meter, flow meter environment for use also can become one of trigger condition of cut-off type diaphragm gas meter terminal microcomputer controller pass valve operation; And provided by the present invention a kind of simple in structure, be suitable for suitability for industrialized production, be easy to promote.
The accompanying drawing explanation
Fig. 1 is for the structural representation of one embodiment of the invention is described;
Fig. 2 is for the structural representation of another embodiment of the present invention is described;
Fig. 3 is for the one-piece construction schematic diagram of another embodiment stop valve of the present invention is described;
Fig. 4 is for illustrating that another embodiment middle gear reducer casing first of the present invention splits face structural representation;
Fig. 5 is for illustrating that another embodiment middle gear reducer casing second of the present invention splits face structural representation;
Fig. 6 is for the structural representation of yet another embodiment of the invention driving gear and the motive seal of transmission shaft reducer casing reinforcement is described;
In figure, 1 be motor, 2 for gear reduction box, 21 for input gear, 22 for output gear, 23 for driving gear, 24 for transmission gear, 25 for transmission shaft, 26 for ratchet doubly-linked gear, 27 for imperfect gear, 271 for biasing post, 28 for lock dog, 29 for resetting means, 3 for valve rod, 31 sealing caps, 32 connecting holes, 4 for inner housing, 5 for O-ring seal, 6 for air intake opening, 7 for the gear reduction box top cover.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Shown in figure 1, one embodiment of the present of invention are a kind of cut-off type diaphragm gas meters, comprise the base table body, described base table body is provided with fuel gas inlet and gas outlet, on described fuel gas inlet, stop valve is installed, described gas meter, flow meter also comprises signal acquisition processing circuit and cut-off type diaphragm gas meter terminal microcomputer controller, described signal acquisition processing circuit access cut-off type diaphragm gas meter terminal microcomputer controller, the collection terminal of described signal acquisition processing circuit is placed in the optional position of the inner blast tube of base table body, described stop valve is by stop valve control circuit access cut-off type diaphragm gas meter terminal microcomputer controller,
The effect of above-mentioned gas meter, flow meter structure is: gathered the flow information of the inner combustion gas process of base table body by signal acquisition processing circuit, and be converted into corresponding electronic measurement pulse signal input cut-off type diaphragm gas meter terminal microcomputer controller;
And at least be preset with long abnormality threshold range of the low discharge leakage corresponding with the base table body, abnormal large flow and service time in the inside of above-mentioned cut-off type diaphragm gas meter terminal microcomputer controller, also can be referred to as the combustion gas monitoring abnormal state mechanism shown in Fig. 1; Its effect be with the electronic measurement pulse signal that comes from signal acquisition processing circuit in the flow information that comprises contrasted, judge whether to occur that combustion gas used state extremely, belong to any abnormality while further judging, and determine whether by the stop valve control circuit, close stop valve according to comparing result.
In the present embodiment; utilize the flow through gas quantity of base table body of signal acquisition processing circuit Real-time Collection; and transmit it in time cut-off type diaphragm gas meter terminal microcomputer controller; detecting that the base table body occurs that low discharge is revealed, when abnormal large flow and the abnormality such as service time is long; can close in time the stop valve on the base table body; also can select to be reported to the police by liquid crystal display, hummer; avoid gas leakage excessive; cause burning or explosion phenomenon, the safety of protection people's life and property.
From above-described embodiment, gas meter, flow meter in the present invention is to take the displacement machine measurement technology as basis (being above-mentioned alleged base table body), realizes the gas meter, flow meter of valve control, exceptional state alarm cutting function by the combination of signal acquisition process technology, safety cut-off valve technology.
As what mention in above-described embodiment, the signal acquisition processing circuit Real-time Collection gas quantity in the base table body of flowing through, whether its purpose exists abnormal situation for the combustion gas output that judges the base table body, for these abnormal conditions, the abnormal conditions that the inventor uses for existing diaphragm gas meter gather, use habit in conjunction with the user is analyzed, three kinds of abnormal conditions that the base table body the most often occurs have roughly been summed up, be that above-mentioned combustion gas low discharge is revealed, the abnormal large flow of combustion gas and combustion gas are long service time, and in the present invention, for aforementioned three kinds of situations, be defined as follows:
The abnormality that low discharge leaks refers to that the gas flow of the base table body of flowing through is greater than the flow that makes of base table body, and is less than gas appliance igniting flow half, and the duration has surpassed preset value.The flux lower limit value that wherein makes flow refer to flow through the gas flow of base table body can make the base table body be counted; The igniting flow of gas appliance refers to the flux lower limit value that can maintain the gas kitchen ranges burning.
The abnormality of abnormal large flow refers to that in the fixed unit interval in sight, the gas flow of the base table body of flowing through has surpassed 1.2 times of maximum flow preset value; Wherein maximum flow refers to that gas meter, flow meter can realize the regulation flow upper limit of accurate counting, and this value is set according to Its Relevant Technology Standards by gas meter, flow meter manufacturer.
The gas flow that service time, long abnormality referred to the base table body of flowing through in the threshold range of the normal use traffic of combustion gas, but the duration surpassed preset value; The normal use traffic of described combustion gas be flow through the gas flow of base table body be greater than the base table body minimum flow, be more than or equal to gas appliance the igniting flow, be less than abnormal large flow and the duration surpasses preset value; The minimum flow of described base table body is the base table body and can make the minimum stream value of base table body accurate counting of flowing through.
Shown in figure 2, an embodiment who is more preferably for the technical solution problem in the present invention, consideration for the security aspect, even if the inventor also finds the combustion gas of flowing through in the base table body and above-mentioned abnormal conditions do not occur, but the external environment condition of installing as gas meter, flow meter is not suitable for using the words of combustion gas, still be prone to security incident, therefore be to make gas meter, flow meter in the situation that guarantee that the base table body is used under non-abnormality, the condition that the partial parameters in external environment condition also can be turn-offed to stop valve as triggering cut-off type diaphragm gas meter terminal microcomputer controller; Be specially and set up the sensor detection module in gas meter, flow meter, and by sensor detection module access cut-off type diaphragm gas meter terminal microcomputer controller, for detect the current state of gas meter, flow meter external environment condition by external sensor, and corresponding environmental information is transferred to the sensor detection module, gather environmental information by cut-off type diaphragm gas meter terminal microcomputer controller from the sensor detection module, judge whether to close stop valve by the stop valve control circuit according to current environmental information; And aforesaid external sensor can be selected according to field of employment and the area of gas meter, flow meter, determine and use one or more; For example Earthquake sensor, gaseous-pressure sensor, gas concentration detection alarm device, again or compound alarm etc.
Further, the inventor is also with reference to prior art, the other problems that may occur in use for the gas meter, flow meter with terminal microcomputer controller adopts following technological means to be solved: set up under-voltage protecting circuit in gas meter, flow meter, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit, described under-voltage protecting circuit, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit access cut-off type diaphragm gas meter terminal microcomputer controller respectively, for occurring under-voltage in the gas meter, flow meter use procedure, when outage and magnetic interference, control corresponding circuit by cut-off type diaphragm gas meter terminal microcomputer controller and complete the pass valve, the operation of warning and recovering state.
In addition, in above-mentioned abnormal conditions, trigger cut-off type diaphragm gas meter terminal microcomputer controller, after making its execution close the operation of stop valve, know for timely reminding user, also can on gas meter, flow meter, design the function of reporting to the police; Therefore set up again in the present embodiment liquid crystal display and hummer in gas meter, flow meter, and liquid crystal display and hummer are also accessed to cut-off type diaphragm gas meter terminal microcomputer controller, and at least for auxiliary cut-off type diaphragm gas meter terminal microcomputer controller, complete the operation of warning, when above-mentioned any one abnormality appears in gas meter, flow meter, when being closed valve, also by hummer and liquid crystal display, carry out sound and light alarm.
Further, the inventor also finds through overtesting, and except the above-mentioned abnormal case of enumerating, the existing potential safety hazard of stop valve itself also will have a strong impact on the security that gas meter, flow meter is used, and for example, for stop valve provides the source current of power excessive, easily produce electric spark; As combustion gas is revealed, when cut-off type diaphragm gas meter terminal microcomputer controller detects this abnormality and is closed valve, the control stop valve cuts out, in the process of closing at stop valve, once produce electric spark because electric current is excessive easily light combustion gas and even blast; On the other hand, whether the sealing of stop valve after closing height also will determine after the valve of gas meter, flow meter pass state that can be in overall safety;
Shown in figure 3, Fig. 4 and Fig. 5, based on above-mentioned actual conditions, the inventor has also done further improvement to the stop valve structure in above-described embodiment, another embodiment be more preferably for the technical solution problem in the present invention, stop valve comprises shell body, and inner housing 4 is installed within the outer shell, motor 1 as the power part of stop valve is installed in inner housing 4, and gear reduction box 2, gear reduction box top cover 7 and valve rod 3, wherein a wherein end of valve rod 3 is provided with sealing cap 31, is provided with connecting hole 32 on the other end.Need to install input gear 21, output gear 22 and driving gear 23 in aforesaid gear reduction box 2, the output shaft of motor 1 is connected with input gear 21 power, input gear 21 is connected with output gear 22 power by Multi-stage transmission gear 24, transfer to output gear 22 after by Multi-stage transmission gear 24, the power of input gear 21 being increased, output gear 22 also is connected with driving gear 23 power by transmission shaft 25;
On this basis, need to install ratchet doubly-linked gear 26 and imperfect gear 27 on aforesaid gear reduction box top cover 7, described ratchet doubly-linked gear 26 is meshed with driving gear 23, imperfect gear 27 respectively, described imperfect gear 27 is provided with biasing post 271, described biasing post 271 inserts the connecting hole 32 of valve rod 3 ends, on described gear reduction box top cover 7, lock dog 28 also is installed, described lock dog 28 fastens with ratchet doubly-linked gear 26, for limiting ratchet doubly-linked gear 26 backwards rotation; On described lock dog 28 and imperfect gear 27, resetting means 29 also all is installed.
In the present embodiment, motor 1 drives input gear 21 and rotates, input gear 21 amplifies the moment of torsion of motor 1 output shaft by the Multi-stage transmission gear 24 with its engagement, and then be passed to output gear 22, output gear is passed to driving gear 23 by moment of torsion by transmission shaft 25, because driving ratchet doubly-linked gear 26, driving gear 23 rotates, and then drive imperfect gear 27 rotations by ratchet doubly-linked gear 26, when imperfect gear 27 rotates, 271 of biasing posts can be with ovable valve stem 3 to move forward and backward, the power that imposes on valve rod 3 for the 271 hoops motions of assurance biasing post makes it that straight-line displacement occur, the connecting hole 32 of valve rod 3 ends can be set to bar hole, biasing post 271 can be moved in bar hole, the lock dog 28 fastened with ratchet doubly-linked gear 26 can be when imperfect gear 27 rotates to anodontia part, prevent that it from rotating backward under the effect of resetting means, and then form and engage with imperfect gear 27, make valve rod 3 keep current state.
By gear-driven mode, the moment of torsion of motor 1 output shaft is amplified, thereby in actual applications, the outputting power of motor 1 can be controlled in a less scope, and then source current and the voltage of driving motor 1 operation also can be reduced, prevent the excessive generation electric spark of electric current, bring above-mentioned potential safety hazard, further improved the security of gas meter, flow meter.
In another embodiment of the present invention, for preventing rock gas, the circuit of stop valve inside is caused to corrosion, preferably above-mentioned motor 1 sealing is arranged on to the inside of inner housing 4, and sets up top cover on gear reduction box 2, and top cover and gear reduction box 2 sealing installations; Described transmission shaft 25 is tightly connected with driving gear 23.Further, shown in figure 6, the inventor thinks and prevents that combustion gas from causing the technical scheme that is more preferably of corrosion on the basis of aforementioned means to motor interior, installs in the inside of inner housing 4 motor 1 by O-ring seal 5 static seals; The output shaft of motor 1 is stretched into to gear reduction box 2, and be provided with O-ring seal between the output shaft of motor 1 and gear reduction box 2; Described transmission shaft 25 is arranged on the top cover of gear reduction box 2 by O-ring seal 5 reinforcement sealings, and is connected with driving gear 23 power.
As above-mentioned mentioned, ratchet doubly-linked gear 26 has utilized the principle of ratchet-gear wheel structure just, its lock dog 28 is matched, and the ratchet on ratchet-gear wheel is set to counterclockwise tilt, realize between itself and lock dog " turn clockwise by; be rotated counterclockwise engaging " purpose, yet be subject to the constraint of ratchet-gear wheel with the gear that ratchet-gear wheel is fixed as one, when it is meshed with imperfect gear 27 and driving gear 23 respectively, form the forward transmission with imperfect gear 27, oppositely engaging, and then prevent that imperfect gear 27 from rotating backward.
Shown in figure 5, an embodiment who is more preferably for the technical solution problem in invention, for above-mentioned lock dog 28 and imperfect gear 27 can be resetted smoothly after motor 1 is out of service, can adopt torque spring as the resetting means 29 of installing on lock dog 28 and imperfect gear 27, for making lock dog 28 keep the state fastened with ratchet doubly-linked gear 26, imperfect gear 27 is automatically reset under the state of non-engagement.
Shown in figure 4 and Fig. 5, the two-way valve process of opening without stall gear drive gas meter, flow meter Special cut-off valve in the above embodiment of the present invention is: when the output shaft of motor 1 rotates counterclockwise and transfers a torque to driving gear 23 by input gear 21, transmission gear 24 and output gear 22, driving gear 23 is rotated counterclockwise by the imperfect gear 27 of the gear driven on ratchet doubly-linked gear 26, biasing post band ovable valve stem 3 on imperfect gear 27 is retracted, now the sealing cap 31 of valve rod 3 initiating terminals leaves the air intake opening 6 on stop valve, and stop valve is opened; When being rotated counterclockwise anodontia position, realizes by imperfect gear 27 that imperfect gear 27 is from 26 unloadings of ratchet doubly-linked gear, although now driving gear 23 is also driving ratchet doubly-linked gear 26 rotation toward the clockwise direction, but the tooth on the gear of ratchet doubly-linked gear 26 is not meshed with the tooth on imperfect gear 27, when the output shaft of motor 1 continues to rotate counterclockwise, imperfect gear 27 remains at this state, be the sealing cap 31 of valve rod 3 initiating terminals all the time away from air intake opening 6, the stop valve valve is opening.When motor 1 stops operating, the torque spring of installing on imperfect gear 27 drives it and clockwise rotates with the gear of ratchet doubly-linked gear 26 and be meshed, and on ratchet doubly-linked gear 26, fixing anticlockwise ratchet-gear wheel is locked under the effect of lock dog 28, make the torque spring that resets of installing on imperfect gear 27 can not continue to make imperfect gear 27 to rotate, be that lock dog 28 pins ratchet-gear wheel and then pins ratchet doubly-linked gear 26, ratchet doubly-linked gear 26 pins imperfect gear 27, valve rod 3 can not be stretched out, and then make valve be held open state.
Equally, shown in Fig. 4 and Fig. 5, the two-way pass valve process without stall gear drive gas meter, flow meter Special cut-off valve of the above embodiment of the present invention is: when motor 1 clockwise rotates and passes through input gear 21, transmission gear 24 and output gear 22 transfer a torque to driving gear 23, driving gear 23 also turns clockwise, now because ratchet doubly-linked gear 26 is pinned by lock dog 28, under driving gear 23 turns clockwise the effect of power, the liner plate that ratchet doubly-linked gear 26 is installed by below is realized release with the engagement of driving gear 23 axle rotations disengaging and imperfect gear 27, imperfect gear 27 clockwise rotates under the effect of torsion spring power, the biasing post of its top rotates and promotes valve rod 3 valve-offs with imperfect gear 27, and lock dog 28 also rotates around driving gear 23 axles with ratchet-gear wheel doubly-linked gear by liner plate in aforementioned process, when lock dog 28 is encountered the medial surface of gear reduction box 2, throw off the ratchet-gear wheel of ratchet doubly-linked gear 26 and realize unloading, make to close valve without stall, after the output shaft of motor 1 stops operating, under the effect of torsion spring power, make lock dog 28 reset, before the startup next time of motor 1 rotates counterclockwise, electromechanical valve remains closed condition.
The present invention is intended to realize the warning function of diaphragm gas meter abnormality, and timely the output combustion gas is carried out to safety cut-off, stop the generation of the perils such as fire and blast, possess the functions such as under-voltage prompting, the recovery of outage data, anti-magnetic interference simultaneously, be beneficial to the use gas meter, flow meter that the user is safer, gas company is better carried out management of safe operation, reduces the generation of peril.
Except above-mentioned, also it should be noted that " embodiment ", " another embodiment " that spoken of in this manual, " embodiment " etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.In instructions, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while in conjunction with arbitrary embodiment, describing a specific features, structure or characteristics, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (10)
1. a cut-off type diaphragm gas meter, comprise the base table body, described base table body is provided with fuel gas inlet and gas outlet, on described fuel gas inlet, stop valve is installed, it is characterized in that: described gas meter, flow meter also comprises signal acquisition processing circuit and cut-off type diaphragm gas meter terminal microcomputer controller, described signal acquisition processing circuit access cut-off type diaphragm gas meter terminal microcomputer controller, the mechanical counting device of the collection terminal access base table body of described signal acquisition processing circuit, described stop valve is by stop valve control circuit access cut-off type diaphragm gas meter terminal microcomputer controller,
For gathered the flow information of the inner combustion gas process of base table body by described signal acquisition processing circuit, and be converted into corresponding electronic measurement pulse signal, input cut-off type diaphragm gas meter terminal microcomputer controller;
The inside of described cut-off type diaphragm gas meter terminal microcomputer controller at least is preset with long abnormality threshold range of the low discharge leakage corresponding with the base table body, abnormal large flow and service time, the flow information that is used for comprising with the electronic measurement pulse signal that comes from signal acquisition processing circuit is contrasted, and according to comparing result, judges whether to close stop valve by the stop valve control circuit.
2. cut-off type diaphragm gas meter according to claim 1, it is characterized in that: the abnormality that described low discharge leaks is that the flow through gas flow of base table body is greater than the initial-flow of base table body, and be less than half of gas appliance igniting flow, and the duration has surpassed preset value.
3. cut-off type diaphragm gas meter according to claim 1 is characterized in that: the abnormality of described abnormal large flow is within the unit interval, and the gas flow of the base table body of flowing through has surpassed more than 1.2 times of maximum flow preset value.
4. according to the described cut-off type diaphragm gas meter of claim 2 or 3, it is characterized in that: described service time, long abnormality was to flow through the gas flow of base table body in the scope of the normal use traffic of combustion gas, but the duration has surpassed preset value; The normal use traffic of described combustion gas be flow through the gas flow of base table body be greater than the base table body minimum flow, be more than or equal to gas appliance the igniting flow, be less than abnormal large flow; The minimum flow of described base table body is the base table body and can make the minimum stream value of base table body accurate counting of flowing through.
5. cut-off type diaphragm gas meter according to claim 1, it is characterized in that: also comprise the sensor detection module in described gas meter, flow meter, described sensor detection module access cut-off type diaphragm gas meter terminal microcomputer controller, for detect the current state of gas meter, flow meter external environment condition by external sensor, and corresponding environmental information is transferred to the sensor detection module, gather environmental information by cut-off type diaphragm gas meter terminal microcomputer controller from the sensor detection module, according to current environmental information, judge whether to close stop valve by the stop valve control circuit, described external sensor comprise in the middle of Earthquake sensor, gaseous-pressure sensor, gas concentration detection alarm device, compound alarm any one or multiple.
6. cut-off type diaphragm gas meter according to claim 1 or 5, it is characterized in that: also comprise under-voltage protecting circuit in described gas meter, flow meter, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit, described under-voltage protecting circuit, power-off protecting circuit, antimagnetic interfered circuit and recovering state circuit access cut-off type diaphragm gas meter terminal microcomputer controller respectively, for occurring under-voltage in the gas meter, flow meter use procedure, when outage and magnetic interference, control corresponding circuit by cut-off type diaphragm gas meter terminal microcomputer controller and complete the pass valve, the operation of warning and recovering state.
7. cut-off type diaphragm gas meter according to claim 6, it is characterized in that: also comprise liquid crystal display and hummer in described gas meter, flow meter, described liquid crystal display and hummer also access cut-off type diaphragm gas meter terminal microcomputer controller, and at least for auxiliary cut-off type diaphragm gas meter terminal microcomputer controller, complete the operation of warning.
8. cut-off type diaphragm gas meter according to claim 1, it is characterized in that: described stop valve comprises shell body, the inside of described shell body also is equipped with inner housing (4), motor (1) is installed in described inner housing (4), gear reduction box (2), gear reduction box top cover (7) and valve rod (3), a wherein end of described valve rod (3) is provided with sealing cap (31), be provided with connecting hole (32) on the other end, input gear (21) is installed in described gear reduction box (2), output gear (22) and driving gear (23), the output shaft of described motor (1) is connected with input gear (21) power, input gear (21) is connected with output gear (22) power by Multi-stage transmission gear (24), transfer to output gear (22) after by a plurality of transmission gears (24), the power of input gear (21) being increased, described output gear (22) also is connected with driving gear (23) power by transmission shaft (25), ratchet doubly-linked gear (26) and imperfect gear (27) are installed on described gear reduction box top cover (7), described ratchet doubly-linked gear (26) respectively with driving gear (23), imperfect gear (27) is meshed, described imperfect gear (27) is provided with biasing post (271), described biasing post (271) inserts the connecting hole (32) of valve rod (3) end, lock dog (28) also is installed on described gear reduction box top cover (7), and described lock dog (28) fastens with ratchet doubly-linked gear (26), for limiting ratchet doubly-linked gear (26) backwards rotation, on described lock dog (28) and imperfect gear (27), resetting means (29) also all is installed.
9. cut-off type diaphragm gas meter according to claim 8 is characterized in that: described motor (1) sealing is arranged on the inside of inner housing (4), and gear reduction box (2) and gear reduction box top cover (7), by sealing, installs; Described transmission shaft (25) is tightly connected with driving gear (23);
Described motor (1) is installed by the O-ring seal static seal in the inside of inner housing (4);
The output shaft of described motor (1) stretches into gear reduction box (2), and is provided with O-ring seal between the output shaft of motor (1) and gear reduction box (2); It is upper that described transmission shaft (25) is arranged on gear reduction box top cover (7) by the sealing of O-ring seal (5) reinforcement, and be connected with driving gear (23) power.
10. cut-off type diaphragm gas meter according to claim 8 or claim 9, it is characterized in that: described ratchet doubly-linked gear (26) consists of fixed installation ratchet-gear wheel above gear, described lock dog (28) fastens with ratchet-gear wheel, and gear is meshed with imperfect gear (27) and driving gear (23) respectively;
Ratchet on described ratchet-gear wheel counterclockwise tilts, and for after fastening with lock dog (28), only can rotate towards clockwise direction;
Described lock dog (28) is torque spring with the upper resetting means (29) of installing of imperfect gear (27), for making lock dog (28) keep the state fastened with ratchet doubly-linked gear (26), imperfect gear (27) is automatically reset under the state of non-engagement.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104568508A CN103471675A (en) | 2013-09-29 | 2013-09-29 | Cutting type diaphragm gas meter |
| CN201410032923.5A CN103743448A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff remote control intelligent gas meter |
| CN201410032763.4A CN103743447B (en) | 2013-09-29 | 2014-01-23 | Cut-out type diaphragm gas meter |
| CN201420044882.7U CN203733222U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type IC card gas meter |
| CN201420045275.2U CN203732117U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type remote control gas meter |
| CN201410032116.3A CN103791964A (en) | 2013-09-29 | 2014-01-23 | Safe cut-off type internet-of-things intelligent gas meter |
| CN201420043663.7U CN203848892U (en) | 2013-09-29 | 2014-01-23 | Safety-cutout-type Internet of Things intelligent gas meter |
| CN201410033790.3A CN103745535A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff IC card intelligent gas meter |
| PCT/CN2014/085250 WO2015043351A1 (en) | 2013-09-29 | 2014-08-27 | Safety shutoff remote smart gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104568508A CN103471675A (en) | 2013-09-29 | 2013-09-29 | Cutting type diaphragm gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103471675A true CN103471675A (en) | 2013-12-25 |
Family
ID=49796621
Family Applications (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104568508A Pending CN103471675A (en) | 2013-09-29 | 2013-09-29 | Cutting type diaphragm gas meter |
| CN201420043663.7U Expired - Lifetime CN203848892U (en) | 2013-09-29 | 2014-01-23 | Safety-cutout-type Internet of Things intelligent gas meter |
| CN201410033790.3A Pending CN103745535A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff IC card intelligent gas meter |
| CN201410032116.3A Pending CN103791964A (en) | 2013-09-29 | 2014-01-23 | Safe cut-off type internet-of-things intelligent gas meter |
| CN201420044882.7U Expired - Lifetime CN203733222U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type IC card gas meter |
| CN201420045275.2U Expired - Lifetime CN203732117U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type remote control gas meter |
| CN201410032763.4A Active CN103743447B (en) | 2013-09-29 | 2014-01-23 | Cut-out type diaphragm gas meter |
| CN201410032923.5A Pending CN103743448A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff remote control intelligent gas meter |
Family Applications After (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420043663.7U Expired - Lifetime CN203848892U (en) | 2013-09-29 | 2014-01-23 | Safety-cutout-type Internet of Things intelligent gas meter |
| CN201410033790.3A Pending CN103745535A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff IC card intelligent gas meter |
| CN201410032116.3A Pending CN103791964A (en) | 2013-09-29 | 2014-01-23 | Safe cut-off type internet-of-things intelligent gas meter |
| CN201420044882.7U Expired - Lifetime CN203733222U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type IC card gas meter |
| CN201420045275.2U Expired - Lifetime CN203732117U (en) | 2013-09-29 | 2014-01-23 | Intelligent safety cut-off type remote control gas meter |
| CN201410032763.4A Active CN103743447B (en) | 2013-09-29 | 2014-01-23 | Cut-out type diaphragm gas meter |
| CN201410032923.5A Pending CN103743448A (en) | 2013-09-29 | 2014-01-23 | Safe-cutoff remote control intelligent gas meter |
Country Status (2)
| Country | Link |
|---|---|
| CN (8) | CN103471675A (en) |
| WO (1) | WO2015043351A1 (en) |
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- 2013-09-29 CN CN2013104568508A patent/CN103471675A/en active Pending
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- 2014-01-23 CN CN201420043663.7U patent/CN203848892U/en not_active Expired - Lifetime
- 2014-01-23 CN CN201410033790.3A patent/CN103745535A/en active Pending
- 2014-01-23 CN CN201410032116.3A patent/CN103791964A/en active Pending
- 2014-01-23 CN CN201420044882.7U patent/CN203733222U/en not_active Expired - Lifetime
- 2014-01-23 CN CN201420045275.2U patent/CN203732117U/en not_active Expired - Lifetime
- 2014-01-23 CN CN201410032763.4A patent/CN103743447B/en active Active
- 2014-01-23 CN CN201410032923.5A patent/CN103743448A/en active Pending
- 2014-08-27 WO PCT/CN2014/085250 patent/WO2015043351A1/en active Application Filing
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| CN111043387B (en) * | 2019-12-13 | 2022-03-22 | 武汉景亚自控设备股份有限公司 | Automatic control method based on environment-friendly electromagnetic valve |
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| CN113324181B (en) * | 2021-04-13 | 2022-08-30 | 华翔翔能科技股份有限公司 | Intelligent air supply management method and system |
| CN115199801A (en) * | 2022-06-24 | 2022-10-18 | 常州维格电子有限公司 | Intrinsic safety type intelligent motor valve with safety cut-off and flow regulation functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103791964A (en) | 2014-05-14 |
| CN103743447A (en) | 2014-04-23 |
| CN103743447B (en) | 2016-09-21 |
| CN103743448A (en) | 2014-04-23 |
| CN103745535A (en) | 2014-04-23 |
| CN203732117U (en) | 2014-07-23 |
| CN203733222U (en) | 2014-07-23 |
| CN203848892U (en) | 2014-09-24 |
| WO2015043351A1 (en) | 2015-04-02 |
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Application publication date: 20131225 |