CN205785398U - Diaphragm gas meter - Google Patents
Diaphragm gas meter Download PDFInfo
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- CN205785398U CN205785398U CN201620447635.0U CN201620447635U CN205785398U CN 205785398 U CN205785398 U CN 205785398U CN 201620447635 U CN201620447635 U CN 201620447635U CN 205785398 U CN205785398 U CN 205785398U
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Abstract
This utility model provides a kind of high-accuracy wide-range diaphragm gas meter, and including movement, movement includes that bellows, two epitheliums, two membrane covers, valve gap and four axles connection transfer from one department to another system, and bellows includes that valve seat and two measuring rooms, two epitheliums lay respectively in two measuring rooms；Each described epithelium transfers from one department to another system with corresponding described four axle connection and is connected, vertical shaft is fixing with one end of rocking bar to be connected, the other end of rocking bar is articulated with one end of connecting rod, the other end of connecting rod is articulated with crank, the central shaft of crank is the 3rd rotating shaft, centre-crank wheel is set on axis, valve gap is coaxially disposed with centre-crank wheel, centre-crank wheel makes valve gap around axis synchronous axial system around central axis, the deviation installing extreme position and optimal limit position of epithelium is in 0.5mm to+0.5mm, the angular error of rocking bar is in 0.8 ° to+0.8 °, micromatic setting is installed on centre-crank wheel.The measurement accuracy of gas meter, flow meter is good, certainty of measurement is high, expands the scope of application of gas meter, flow meter.
Description
Technical field
This utility model relates to gas meter, flow meter equipment technical field, in particular to a kind of diaphragm gas meter.
Background technology
Existing diaphragm gas meter is the rubber parts with flexibility due to epithelium, drive mechanism is made up of plastic part, in manufacturing engineering, precision is difficult to ensure that, by changing the tooth set of actuation counter, regulates the number of teeth of tooth and reaches requirement with the inspection equipment school inspection of gas meter, flow meter standard school.Due to error distribution width, gear limited amount, adjusting gas meter, flow meter precision has certain limit and gear, so precision is inadequate.
Utility model content
The purpose of this utility model is to provide a kind of diaphragm gas meter, causes the problem that measurement accuracy is poor, precision is low of gas meter, flow meter improving the diaphragm gas meter operation stability difference of prior art.
This utility model is achieved in that
Based on above-mentioned purpose, this utility model provides a kind of diaphragm gas meter,
Including movement, described movement includes bellows, two epitheliums, two membrane covers, valve seat, valve gap, micromatic setting and under the alternating movement of said two epithelium, drives described valve gap to transfer from one department to another system, wherein relative to two group of four axle connection of described valve seat one-directional rotation:
Described valve seat is connected with described bellows, described valve gap is slidably connected with described valve seat, described bellows includes two measuring rooms, and said two epithelium lays respectively in said two measuring room, and corresponding described measuring room is separated to form Liang Ge measurement chamber by each described epithelium；Each described epithelium transfers from one department to another system with corresponding described four axle connection and is connected, often organize described four axles connection to transfer from one department to another system and include connecting rod, rocking bar, vertical shaft, axis, crank and have driving cog centre-crank wheel, wherein, described vertical shaft is the first rotating shaft, fix with one end of described rocking bar and be connected, the other end of described rocking bar is articulated with one end of described connecting rod, the rotary shaft that described rocking bar is connected with described connecting rod is the second rotating shaft, the other end of described connecting rod is articulated with described crank, the central shaft of described crank is the 3rd rotating shaft, described centre-crank wheel is set on described axis, described axis is the 4th rotating shaft, described valve gap is coaxially disposed with described centre-crank wheel, described centre-crank wheel makes described valve gap around described axis synchronous axial system around described central axis；
The deviation installing extreme position and optimal limit position of described epithelium is in-0.5mm to+0.5mm, the angular error of described rocking bar is in-0.8 ° to+0.8 °, described micromatic setting is installed on described centre-crank wheel, for adjusting when epithelium is in extreme position the air inlet of described valve gap relative to the position of described valve seat, and the epithelium in described measurement chamber is in unstrained state, wherein, described extreme position refers to the plane that described 3rd rotating shaft is positioned at described 4th rotating shaft and described second rotating shaft is formed.
Preferably, described four axle connection transfer from one department to another to unite and also include front flag and rear flag, one described epithelium is by described front flag drive connection in a described vertical shaft, and another described epithelium makes corresponding described vertical shaft rotating by described rear flag drive connection in vertical shaft another described, described epithelium linear reciprocating motion.
Preferably, described movement also includes epithelium support, and described epithelium is installed on described bellows by described epithelium support.
Preferably, described first rotating shaft, described second rotating shaft, described 3rd rotating shaft and described 4th rotating shaft that described four axle connection transfer from one department to another in system are parallel to each other, and are perpendicular to the plane at described centre-crank wheel place.
Preferably, described micromatic setting includes thumb wheel and pointer body, described centre-crank wheel is set to needle dial, installation axle and the camshaft of hollow are installed on described thumb wheel, described installation axle and described camshaft are positioned at the both sides of described thumb wheel place plane, described driving cog is installed on described camshaft, and described camshaft, described installation axle and described drive are coaxially disposed；Described crank is installed on described needle dial, circle center hole, eccentric orfice and the continuous print scale groove being coaxial therewith it is additionally provided with on described needle dial, described installation axle is plugged in described circle center hole, the two ends up and down of described eccentric orfice are respectively arranged with two grooves connected with described eccentric orfice, the described groove being positioned at described eccentric orfice lower end connects described circle center hole, two described grooves are oppositely arranged with a diameter of boundary of described eccentric orfice and connect, and the bottom land of the described groove in lower end is between described circle center hole and described eccentric orfice；
The needle end of described pointer body is provided with the projection in being clamped on described scale groove, the backshank end of described pointer body is provided with rotary shaft, the outer peripheral face of described rotary shaft is provided with Access Division, described Access Division projects radially outward along described rotary shaft, the side face of described installation axle is provided with buckling groove, described buckling groove is axially located by connecting by described Access Division and described buckling groove along the radially-inwardly depression of described installation axle, described installation axle with described needle dial；The lower end of described rotary shaft is provided with cam pin；
Being provided with bar hole on the wheel face of described thumb wheel, the length direction of described bar hole extends along the radial direction of described drive, and described cam pin is plugged in described bar hole.
Preferably, each described groove is half slot, and the radius of described half slot is more than the radius of described eccentric orfice, and accordingly, described Access Division is set to semicircle.
Preferably, described rotary shaft intersects with the line of the line of described circle center hole and described crank and described circle center hole and angle is acute angle, and the one side of the close described circle center hole of described pointer body is set to cambered surface, and described cambered surface caves in towards another side.
Preferably, each described vertical shaft uses metal material to make.
Preferably, described diaphragm gas meter also includes enumerator, and the outfan of described movement connects the input of described enumerator.
Preferably, described movement includes transition tooth, axial tooth, tooth set and regulation tooth, described transition tooth connects described drive by gear, the outfan of described transition tooth is meshed with the input of described axial tooth, the outfan of described axial tooth is meshed with the input of described regulation tooth, and the outfan of described regulation tooth is meshed with the input of described enumerator.
The beneficial effects of the utility model are:
In sum, this utility model provides a kind of diaphragm gas meter, this diaphragm gas meter simple and reasonable, and convenient processing and manufacture, low cost of manufacture, meanwhile, the drive mechanism of this diaphragm gas meter is reasonable, and operating steadily of driving member is safe and reliable to operation；The measurement accuracy of gas meter, flow meter is good, certainty of measurement is high, expands the scope of application of diaphragm gas meter.Specific as follows:
This diaphragm gas meter includes movement, movement is for the circulation of combustion gas, i.e. gas is passed through the measuring room of constant volume, it is then exhausted from after Chong Maning, in the process, by rational drive mechanism, inflation, the number of times of aerofluxus are converted to volume, drive mechanism is being connected on enumerator, and then the circulation of gas is reacted on enumerator and show, it is achieved that the measurement of gas.In inflation, in exhaust process, the flowing of gas drives epithelium to move back and forth in measuring room, epithelium move back and forth the rotation being converted into valve gap, valve gap rotates and passes to enumerator, it is achieved the metering of the flow of gas.In epithelium motor process, each four pipe subsystem can be through two extreme positions, and when extreme position, epithelium needs to change the direction of motion and four pipe subsystem are exceeded the maximum position.nullIn the present embodiment，By positioner, the extreme position of epithelium is accurately positioned，After installation，The deviation installing extreme position and optimal limit position of described epithelium is in-0.5mm to+0.5mm，The angular error of described rocking bar is in-0.8 ° to+0.8 °，When being in extreme position by adjustment micromatic setting regulation epithelium again, the air inlet of valve gap is relative to the position of valve seat，Thus regulate the opportunity of measurement chamber's air inlet or aerofluxus，Before epithelium reaches capacity position，Complete the conversion of airflow direction，The pressure making epithelium both sides equalizes，And the epithelium in measurement chamber is in unstrained state，Gas flow pattern is stable，The fluctuation of gas crushing is little，Gas will not expend unnecessary energy on epithelium，Epithelium will not be done work by gas，Prevent gas that epithelium acting is caused the situation of energy loss，The volume that gas flows out in measurement chamber is more accurate，I.e. revolution volume is more accurate，Improve the precision of metering.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, the accompanying drawing used required in embodiment will be briefly described below, it is to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope it is not construed as, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
The structure chart of the diaphragm gas meter that Fig. 1 provides for this utility model；
The top view of the diaphragm gas meter that Fig. 2 provides for this utility model；
The top view of the micromatic setting of the diaphragm gas meter that Fig. 3 provides for this utility model；
The top view of the needle dial of the diaphragm gas meter that Fig. 4 provides for this utility model；
The sectional view of the micromatic setting of the diaphragm gas meter that Fig. 5 provides for this utility model.
Reference collects:
Movement 100, bellows 200, epithelium 300, valve gap 400, measurement chamber 500, crank 600,
Centre-crank wheel 101, connecting rod 102, rocking bar 103, front flag 104, rear flag 105, vertical shaft 106, epithelium support 107, driving cog 108,
Eccentric orfice 202, groove 203, pointer body 204, rotary shaft 205, thumb wheel 206, bar hole 207, cam pin 208, connecting plate 209, buckling groove 210, Access Division 211, camshaft 212, installation axle 213, cambered surface 214, scale groove 215, circle center hole 216,
Transition tooth 301, axial tooth 302, tooth set 303, regulate tooth 304, enumerator 305.
Detailed description of the invention
Existing diaphragm gas meter is the rubber parts with flexibility due to epithelium, drive mechanism is made up of plastic part, in manufacturing engineering, precision is difficult to ensure that, by changing the tooth set of actuation counter, regulates the number of teeth of tooth and reaches requirement with the inspection equipment school inspection of gas meter, flow meter standard school.Due to error distribution width, gear limited amount, adjusting gas meter, flow meter precision has certain limit and gear, so precision is inadequate.
Given this, designer of the present utility model devises a kind of diaphragm gas meter, this diaphragm gas meter is simple and reasonable, convenient processing and manufacture, simultaneously, this diaphragm gas meter is by adjusting the position of crank, make the upset prior to epithelium that changes of airflow direction in movement running, thus before epithelium reaches the limit of position upset, the pressure of both sides is the most equalised, the motion making movement is more steady, and certainty of measurement improves.
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Generally can with various different configurations arrange and design with the assembly of this utility model embodiment that illustrate described in accompanying drawing herein.Therefore, the detailed description to the embodiment of the present utility model provided in the accompanying drawings is not intended to limit claimed scope of the present utility model below, but is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms in following accompanying drawing, therefore, the most a certain Xiang Yi accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " is arranged ", " installation ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, can also be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
Refer to Fig. 1-5, in Fig. 1, A and D is respectively swinging end axle and the swinging end axle of connecting rod 102 of corresponding rocking bar 103, it is the second rotating shaft, the rotary shaft of crankwheel 101 centered by B, is the 4th rotating shaft, and C is the rotary shaft of crank 600, being the 3rd rotating shaft, a is the angle (limiting angle) on valve gap 400 breach limit and the boundary muscle of measurement chamber 500.Present embodiments provide a kind of diaphragm gas meter, including movement 100, described movement 100 includes bellows 300, two membrane covers of 200, two epitheliums, valve gap 400, valve seat, micromatic setting and under the alternating movement of said two epithelium 300, described valve gap 400 is driven to transfer from one department to another system, wherein relative to four axle connection of described valve seat one-directional rotation:
Valve seat is connected with bellows 200, valve gap is slidably connected with valve seat, and described bellows 200 includes two measuring rooms, and said two epithelium 300 lays respectively in said two measuring room, corresponding described measuring room is separated to form Liang Ge measurement chamber 500 by each epithelium 300, is two film four cavity configurations；Four measurement chamber 500 are divided into two groups, Liang Ge measurement chamber 500 is one group, Liang Ge measurement chamber 500 alternately air inlet and the aerofluxus often organized, air inlet and gas outlet it is provided with on valve gap 400, when valve gap 400 centre-crank wheel drive under around central axis time, the air inlet of valve gap 400 connects with corresponding measurement chamber 500, this measurement chamber 500 is in air-suction state, the measurement chamber 500 relative with this measurement chamber 500 is for going out gaseity, Liang Ge measurement chamber 500 is in different states, and then create draught head, this draught head promotes epithelium 300 to move back and forth in measuring room, the transmission component that is moved through of epithelium 300 exports to enumerator 305, numerical value at reaction on enumerator 305, and then obtained the flow of combustion gas.In the ordinary course of things, all having the inlet chamber being in air-suction state and the discharge chamber being in exhaust condition in two Sets of Measurement chambers 500, gas back and forth alternately enters four measurement chamber 500.
The deviation installing extreme position and optimal limit position of epithelium is in-0.5mm to+0.5mm, i.e. the alignment error of epithelium is in-0.5mm to+0.5mm, the angular error of described rocking bar is in-0.8 ° to+0.8 °, the installation site of epithelium is more accurate, the position of rocking bar is more accurate, it is little that gas meter, flow meter runs time error, and precision is high.Extreme position refers to the plane that the 3rd rotating shaft is positioned at the 4th rotating shaft and the second rotating shaft is formed.
Described four axle connection transfer from one department to another system and include connecting rod 102, rocking bar 103, vertical shaft 106, axis, crank 600 and have driving cog 109 centre-crank wheel 101, described centre-crank wheel is set on described axis, described valve gap is coaxially disposed with described centre-crank wheel, described centre-crank wheel makes described valve gap around described axis synchronous axial system around described central axis, the outfan of each described epithelium connects corresponding described vertical shaft, described vertical shaft is the first rotating shaft, one end of described rocking bar is sheathed on described vertical shaft, and with described vertical shaft synchronous axial system, the other end of described rocking bar is articulated with one end of described connecting rod, it is provided with crank on described centre-crank wheel, the other end of described connecting rod is articulated with described crank.Epithelium 300 moves back and forth under the active force of draught head in corresponding measurement chamber and drives rocking bar 103 to move, rocking bar 103 swings drivening rod 102 and rotates, connecting rod 102 is connected by crank 600 with centre-crank wheel 101, the rotational band of two connecting rods 102 moves centre-crank wheel 101 rotation, and then driven valve gap 400 to rotate relative to valve seat, the air inlet of valve gap 400 connects from different measurement chamber 500 with gas outlet, completes air inlet or aerofluxus, so circulates.
In movement 100 running, two epitheliums 300 are respectively provided with two extreme positions, this extreme position refer to described 3rd rotating shaft in the plane that described 4th rotating shaft and described second rotating shaft are formed, for the position that exceeds the maximum, epithelium 300 changes the direction of motion by upset.In prior art, when moving to extreme position due to epithelium 300, the draught head of the Liang Ge measurement chamber 500 matched is zero to the moment of centre-crank wheel 101, the epithelium 300 being in extreme position is individually driven centre-crank wheel 101 rotation by the motion of another epithelium 300 completely, over extreme position, such kind of drive makes epithelium 300 be deteriorated in the kinetic stability of extreme position, and the accuracy of gas meter, flow meter reduces, and certainty of measurement reduces.Moment is zero, namely the run-on point (C point in Fig. 1) of connecting rod 102 and crank 600 is positioned at the run-on point (A point or D point in Fig. 1) of rocking bar 103 and connecting rod 102 and centre-crank and takes turns on the line of run-on point (B point in Fig. 1) or the extended line of 101, the active force of connecting rod 102 is along its length, crank 600 can not be driven relative to central axis, the motion of another epithelium can only be relied on to drive its position that exceeds the maximum, add the error of measurement, and error is maximum.
nullTherefore，The diaphragm gas meter that the present embodiment provides，Including micromatic setting，Micromatic setting is for adjusting when epithelium is in extreme position the air inlet of valve gap relative to the position of valve seat，During Installation Modes gas meter, flow meter，By positioner, the extreme position of epithelium is accurately positioned，Make the deviation installing extreme position and optimal limit position of epithelium in-0.5mm to+0.5mm，The angular error of rocking bar is in-0.8 ° to+0.8 °，When being in extreme position by adjustment micromatic setting regulation epithelium again, the air inlet of valve gap is relative to the position of valve seat，The angle of limiting angle a i.e. can be changed by micromatic setting，Thus regulate the opportunity of measurement chamber's air inlet or aerofluxus，Before epithelium reaches capacity position，Complete the conversion of airflow direction，The pressure making epithelium both sides equalizes，And the epithelium in measurement chamber is in unstrained state，Gas flow pattern is stable，The fluctuation of gas crushing is little，Valve gap 400 is switched on the import of the measurement chamber 500 not yet emptied before epithelium not up to extreme position，Make airflow direction changes turning to prior to epithelium 300，Thus before epithelium 300 reaches the limit of position upset，The pressure of both sides is the most equalised，The motion of movement 100 is more steady，Improve certainty of measurement.
Epithelium when being positioned at extreme position can drive its position that exceeds the maximum under the mobilization of the gas of the Liang Ge measurement chamber of its correspondence, it is more than relying on the motion of another epithelium to drive its position that exceeds the maximum, decrease drive epithelium exceed the maximum position time loss energy, improve the accuracy of measurement, also improve the certainty of measurement of gas meter, flow meter.And epithelium is when being in extreme position, epithelium is in unstrained state, the most whole epithelium is in motor process, it will not be done work by gas, epithelium will not consume unnecessary energy, and then improve the accuracy turning round volume, the volume differences of the gas volume and metering that enter measurement chamber reduces, and further increases accuracy and its certainty of measurement of gas meter, flow meter.
In the preferred version of this embodiment, described four axle connection transfer from one department to another to unite and also include front flag 104 and rear flag 105, one described epithelium 300 by described front flag 104 drive connection in a described vertical shaft 106, another described epithelium 300 by described rear flag 105 drive connection in vertical shaft 106 another described, described epithelium 300 linear reciprocating motion makes corresponding described vertical shaft 106 rotate, epithelium 300 connects corresponding vertical shaft 106 by front flag 104 or rear flag 105, it is connected with rocking bar 103 by vertical shaft 106 again, epithelium 300 moves, four axle connection are driven to turn system motion, finally achieve the valve gap 400 rotation relative to valve seat.Accurate positioning when front flag 104, rear flag 105, rocking bar 103 and connecting rod 102 are installed, the matching relationship of all parts is good, and the accuracy of revolution volume is high, and then improves the accuracy of gas meter, flow meter.
In the preferred version of this embodiment, described movement 100 also includes epithelium support 107, described epithelium 300 is installed on described bellows 200 by described epithelium support 107, epithelium 300 easy for installation, after epithelium 300 is installed, its positional precision is high, and then improves the installation accuracy of whole mechanism, when movement 100 runs more steadily, the measuring accuracy of diaphragm gas meter is high.
In the preferred version of this embodiment, the first rotating shaft, the second rotating shaft, the 3rd rotating shaft and the 4th rotating shaft that four axle connection transfer from one department to another in system are parallel to each other, and are perpendicular to the plane at centre-crank wheel place, and operating steadily of gas meter, flow meter, transmission is more flexible.The gas meter, flow meter that the present embodiment provides, by improving front flag 104, rear flag 105, rocking bar 103 and the positional accuracy of connecting rod 102 during gas meter, flow meter when mounted, and then ensure the accuracy of the extreme position of epithelium 300, in motor process, epithelium is in unstrained state all the time, improve the accuracy of revolution volume, and then ensure that the measurement accuracy of gas meter, flow meter.The accuracy of the gas meter, flow meter that the present embodiment provides is high, is adjusted in less scope by micromatic setting, and the precision of adjustment is high, it is provided that the gas meter, flow meter that a kind of accuracy is high, precision is high.
Refer to Fig. 3-5, in the preferred version of this embodiment, described micromatic setting includes thumb wheel 206 and pointer body 204, described centre-crank wheel 101 is set to needle dial, installation axle 213 and the camshaft 212 of hollow are installed on described thumb wheel 206, described installation axle 213 and described camshaft 212 are positioned at the both sides of described thumb wheel 206, and described driving cog 108 is installed on described camshaft 212, and described camshaft 212, described installation axle 213 and described drive are coaxially disposed；Described crank 600 is installed on described needle dial, the circle center hole 216 being coaxial therewith it is additionally provided with on described needle dial, eccentric orfice 202 and continuous print scale groove 215, described installation axle 213 is plugged in described circle center hole 216, the two ends up and down of described eccentric orfice 202 are respectively arranged with two grooves 203 connected with described eccentric orfice 202, the described groove 203 being positioned at described eccentric orfice 202 lower end connects described circle center hole 216, two described grooves 203 are oppositely arranged with a diameter of boundary of described eccentric orfice 202 and connect, the bottom land of the described groove 203 in lower end is between described circle center hole and described eccentric orfice 202；
The needle end of described pointer body 204 is provided with the projection in being clamped on described scale groove 215, the backshank end of described pointer body 204 is provided with rotary shaft 205, the outer peripheral face of described rotary shaft 205 is provided with Access Division 211, described Access Division 211 projecting radially outward along described rotary shaft 205, the side face of described installation axle 213 is provided with buckling groove 201, described buckling groove 201 is axially located by connecting by described Access Division 211 and described buckling groove 201 along the radially-inwardly depression of described installation axle 213, described installation axle 213 with described needle dial；The lower end of described rotary shaft 205 is provided with cam pin 208；
Being provided with bar hole 207 on the wheel face of described thumb wheel 206, the length direction of described bar hole 207 extends along the radial direction of described drive, and described cam pin 208 is plugged in described bar hole 207.
nullRotating pointer body 204，Pointer body 204 rotates relative to described needle dial around the axis of rotary shaft 205，Simultaneously，The cam pin 208 of rotary shaft 205 lower end moves，The bar hole 207 being positioned on thumb wheel 206 due to cam pin 208，Thumb wheel 206 is plugged on needle dial by installing axle，The connecting plate being connected with valve gap 400 plug-in mounting it is provided with on camshaft，Connecting plate is positioned at the lower section of drive，By the barrier effect of sidewall of bar hole 207 when cam pin 208 rotates，Owing to thumb wheel 206 will not be with cam pin 208 synchronous axial system，Therefore the active force of cam pin 208 is by himself passing to rotary shaft 205，The inwall laminating of the outer peripheral face of rotary shaft 205 and eccentric orfice 202，There is the function of mutually extruding，Achieve rotary shaft 205 and extrude the effect of needle dial，And then make cam pin 208 slide in bar hole 207 driven needle dial around install axle rotate，Crank 600 is fixing with needle dial to be connected，And then change the position of crank 600，And then change the position of valve gap 400，Change limiting angle a，Make the position change that the air inlet of valve gap 400 is connected with measurement chamber 500 with steam vent，And then the measuring accuracy of gas meter, flow meter can be improved.
Refer to Fig. 3, in the preferred version of this embodiment, each described groove 203 is half slot, and the radius of described half slot is more than the radius of described eccentric orfice 202, accordingly, Access Division 211 is set to semicircle, when pointer body rotates, after Access Division 211 turns in the groove 203 of eccentric orfice 202 lower end, pointer body 204 will not move along the axis direction of eccentric orfice 202, the position of pointer body 204 is difficult to variation, will not change after ensure that the precision adjustment of gas meter, flow meter, groove 203 is set to half slot, Access Division 211 is set to semicircular plate, it is easy to the rotation of pointer body 204, coordinate tightr, the precision adjusted is higher.
In the preferred version of this embodiment, described rotary shaft 205 intersects with the line of the line of described circle center hole 216 and described crank 600 and described circle center hole 216 and angle is acute angle, the one side of the close described circle center hole 216 of described pointer body 204 is set to cambered surface 214, described cambered surface 214 caves in towards another side, pointer body 204 is in rotation process, the one side of pointer body 204 is set to cambered surface 214, pointer body 204 towards crank 600 rotate time, crank 600 can be positioned at the cambered surface 214 of depression, the scope that pointer body 204 rotates is big, the scope that can adjust is big, the higher gas meter, flow meter of precision can be obtained during adjustment.
Refer to Fig. 1, in the preferred version of this embodiment, described diaphragm gas meter also includes enumerator 305, the outfan of described movement 100 connects the input of described enumerator 305, movement 100 works and by drive mechanism, the number of times of gas inflated, aerofluxus is converted to volume, and then reaction is on enumerator 305, it is achieved that the metering of gas.
Refer to Fig. 1, in the preferred version of this embodiment, described movement 100 includes transition tooth 301, axial tooth 302, tooth set 303 and regulation tooth 304, described transition tooth 301 connects described centre-crank wheel 101 by gear, the outfan of described transition tooth 301 is meshed with the input of described axial tooth 302, the outfan of described axial tooth 302 is meshed with the input of described regulation tooth 304, and the outfan of described regulation tooth 304 is meshed with the input of described enumerator 305.Drive mechanism is steadily reliable, and movement 100 is simple with the attachment structure of enumerator 305, and in transmission process, error is little, and the reading on enumerator 305 is more accurate.
The epithelium 300 that this enforcement provides uses polyester yarn glue to make, described valve gap 400 uses phenol-formaldehyde resin modified injection to make, and epithelium support 107, front flag 104, rear flag 105, rocking bar 103, connecting rod 102, instruction dish, pointer body, centre-crank wheel 101, bellows 200 all use POM plastic injection to make.In order to improve installation accuracy, vertical shaft 106 preferably employs metal material and makes.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. a diaphragm gas meter, it is characterized in that, including movement, described movement includes bellows, two epitheliums, two membrane covers, valve seat, valve gap, micromatic setting and under the alternating movement of said two epithelium, described valve gap is driven to transfer from one department to another system, wherein relative to two group of four axle connection of described valve seat one-directional rotation:
Described valve seat is connected with described bellows, described valve gap is slidably connected with described valve seat, described bellows includes two measuring rooms, and said two epithelium lays respectively in said two measuring room, and corresponding described measuring room is separated to form Liang Ge measurement chamber by each described epithelium；Each described epithelium transfers from one department to another system with corresponding described four axle connection and is connected, often organize described four axles connection to transfer from one department to another system and include connecting rod, rocking bar, vertical shaft, axis, crank and have driving cog centre-crank wheel, wherein, described vertical shaft is the first rotating shaft, fix with one end of described rocking bar and be connected, the other end of described rocking bar is articulated with one end of described connecting rod, the rotary shaft that described rocking bar is connected with described connecting rod is the second rotating shaft, the other end of described connecting rod is articulated with described crank, the central shaft of described crank is the 3rd rotating shaft, described centre-crank wheel is set on described axis, described axis is the 4th rotating shaft, described valve gap is coaxially disposed with described centre-crank wheel, described centre-crank wheel makes described valve gap around described axis synchronous axial system around described central axis；
The deviation installing extreme position and optimal limit position of described epithelium is in-0.5mm to+0.5mm, the angular error of described rocking bar is in-0.8 ° to+0.8 °, described micromatic setting is installed on described centre-crank wheel, for adjusting when epithelium is in extreme position the air inlet of described valve gap relative to the position of described valve seat, make described epithelium reach capacity before position completing the conversion of airflow direction, the pressure making described epithelium both sides equalizes, epithelium in described measurement chamber is in unstrained state, wherein, described extreme position refers to the plane that described 3rd rotating shaft is positioned at described 4th rotating shaft and described second rotating shaft is formed.
Diaphragm gas meter the most according to claim 1, it is characterized in that, described four axle connection transfer from one department to another to unite and also include front flag and rear flag, one described epithelium by described front flag drive connection in a described vertical shaft, another described epithelium makes corresponding described vertical shaft rotating by described rear flag drive connection in vertical shaft another described, described epithelium linear reciprocating motion.
Diaphragm gas meter the most according to claim 1, it is characterised in that described movement also includes epithelium support, described epithelium is installed on described bellows by described epithelium support.
Diaphragm gas meter the most according to claim 1, it is characterized in that, described first rotating shaft, described second rotating shaft, described 3rd rotating shaft and described 4th rotating shaft that described four axle connection transfer from one department to another in system are parallel to each other, and are perpendicular to the plane at described centre-crank wheel place.
Diaphragm gas meter the most according to claim 4, it is characterized in that, described micromatic setting includes thumb wheel and pointer body, described centre-crank wheel is set to needle dial, installation axle and the camshaft of hollow are installed on described thumb wheel, described installation axle and described camshaft are positioned at the both sides of described thumb wheel place plane, and described driving cog is installed on described camshaft, and described camshaft, described installation axle and described drive are coaxially disposed；Described crank is installed on described needle dial, circle center hole, eccentric orfice and the continuous print scale groove being coaxial therewith it is additionally provided with on described needle dial, described installation axle is plugged in described circle center hole, the two ends up and down of described eccentric orfice are respectively arranged with two grooves connected with described eccentric orfice, the described groove being positioned at described eccentric orfice lower end connects described circle center hole, two described grooves are oppositely arranged with a diameter of boundary of described eccentric orfice and connect, and the bottom land of the described groove in lower end is between described circle center hole and described eccentric orfice；
The needle end of described pointer body is provided with the projection in being clamped on described scale groove, the backshank end of described pointer body is provided with rotary shaft, the outer peripheral face of described rotary shaft is provided with Access Division, described Access Division projects radially outward along described rotary shaft, the side face of described installation axle is provided with buckling groove, described buckling groove is axially located by connecting by described Access Division and described buckling groove along the radially-inwardly depression of described installation axle, described installation axle with described needle dial；The lower end of described rotary shaft is provided with cam pin；
Being provided with bar hole on the wheel face of described thumb wheel, the length direction of described bar hole extends along the radial direction of described drive, and described cam pin is plugged in described bar hole.
Diaphragm gas meter the most according to claim 5, it is characterised in that each described groove is half slot, and the radius of described half slot is more than the radius of described eccentric orfice, accordingly, described Access Division is set to semicircle.
Diaphragm gas meter the most according to claim 6, it is characterized in that, described rotary shaft intersects with the line of the line of described circle center hole and described crank and described circle center hole and angle is acute angle, the one side of the close described circle center hole of described pointer body is set to cambered surface, and described cambered surface caves in towards another side.
Diaphragm gas meter the most according to claim 1, it is characterised in that each described vertical shaft uses metal material to make.
Diaphragm gas meter the most according to claim 5, it is characterised in that described diaphragm gas meter also includes enumerator, the outfan of described movement connects the input of described enumerator.
Diaphragm gas meter the most according to claim 9, it is characterized in that, described movement includes transition tooth, axial tooth, tooth set and regulation tooth, described transition tooth connects described drive by gear, the outfan of described transition tooth is meshed with the input of described axial tooth, the outfan of described axial tooth is meshed with the input of described regulation tooth, and the outfan of described regulation tooth is meshed with the input of described enumerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447635.0U CN205785398U (en) | 2016-05-17 | 2016-05-17 | Diaphragm gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447635.0U CN205785398U (en) | 2016-05-17 | 2016-05-17 | Diaphragm gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785398U true CN205785398U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620447635.0U Withdrawn - After Issue CN205785398U (en) | 2016-05-17 | 2016-05-17 | Diaphragm gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205785398U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784048A (en) * | 2016-05-17 | 2016-07-20 | 成都秦川科技发展有限公司 | Diaphragm type gas meter |
| CN106840299A (en) * | 2017-03-28 | 2017-06-13 | 贵州天益仪表科技有限公司 | A kind of method of combustion gas meter anti-theft and gas meter, flow meter used |
| CN108844692A (en) * | 2018-06-27 | 2018-11-20 | 董建礼 | A kind of pressure difference method detection diaphragm gas meter internal leakage device and operation method |
| CN109556670A (en) * | 2018-11-21 | 2019-04-02 | 中国航发西安动力控制科技有限公司 | A kind of high-precision flow metrological service |
-
2016
- 2016-05-17 CN CN201620447635.0U patent/CN205785398U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784048A (en) * | 2016-05-17 | 2016-07-20 | 成都秦川科技发展有限公司 | Diaphragm type gas meter |
| WO2017197839A1 (en) * | 2016-05-17 | 2017-11-23 | 成都秦川科技发展有限公司 | Wide-range diaphragm gas meter |
| CN106840299A (en) * | 2017-03-28 | 2017-06-13 | 贵州天益仪表科技有限公司 | A kind of method of combustion gas meter anti-theft and gas meter, flow meter used |
| CN108844692A (en) * | 2018-06-27 | 2018-11-20 | 董建礼 | A kind of pressure difference method detection diaphragm gas meter internal leakage device and operation method |
| CN109556670A (en) * | 2018-11-21 | 2019-04-02 | 中国航发西安动力控制科技有限公司 | A kind of high-precision flow metrological service |
| CN109556670B (en) * | 2018-11-21 | 2020-12-29 | 中国航发西安动力控制科技有限公司 | High-precision flow metering mechanism |
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Address after: 610199 Longquanyi, Sichuan Province Industrial Park licensing Patentee after: Chengdu Qinchuan networking Polytron Technologies Inc Address before: 610199 Longquanyi, Sichuan Province Industrial Park licensing Patentee before: Chengdu Taichuan Technology Development Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20180216 |
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| AV01 | Patent right actively abandoned |