CN202329714U - Temperature compensation membrane type gas meter - Google Patents
Temperature compensation membrane type gas meter Download PDFInfo
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- CN202329714U CN202329714U CN2011204938041U CN201120493804U CN202329714U CN 202329714 U CN202329714 U CN 202329714U CN 2011204938041 U CN2011204938041 U CN 2011204938041U CN 201120493804 U CN201120493804 U CN 201120493804U CN 202329714 U CN202329714 U CN 202329714U
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- compensating plate
- gas meter
- compensation
- compensation sheet
- rolling disc
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Abstract
The utility model discloses a temperature compensation membrane type gas meter. A vertical shaft is arranged on a machine core body, a connection rod is connected with a rock arm arranged on the vertical shaft, a rotary plate is fixed on a camshaft through a lock catch, and a compensation sheet assembly is arranged on the rotary plate and consists of a compensation sheet, a compensation sheet seat, a compensation sheet seat plate and a movable connection rod column, wherein the compensation sheet seat plate is fixed on the rotary plate, a spiral central end of the compensation sheet is fixed below the compensation sheet seat plate through the compensation sheet seat, an exterior extending straight-line end of the compensation sheet is directly inserted in a gap of the lower part of the movable connection rod column, the middle part of the movable connection rod column is clamped in an arc slot of the compensation sheet seat plate and can slide, and the upper part of the movable connection rod column is connected with the rock arm through a connection rod. Through the compensation sheet arranged in the temperature compensation membrane type gas meter, a problem of equivalently measured gas value error at different temperatures can be solved; and in addition, the temperature compensation membrane type gas meter disclosed by the utility model has the characteristics of simple structure, safety, reliability, accurate measurement, long service life and the like.
Description
Technical field
The utility model belongs to diaphragm gas meter, especially relates to a kind of diaphragm gas meter with temperature compensation characteristic.
Background technology
Diaphragm gas meter is a kind ofly to measure the WT-MSR of combustion gas volume through can the soften inner membrance storehouse (being commonly called as the revolution volume) that becomes, inside; It has characteristics such as accurate measurement, safe and reliable, life cycle be long.
The temperature compensation gas meter, flow meter is set up the mechanical temperature conversion equipment exactly on the inner cartridge assemblies of common diaphragm gas meter, it has the characteristics of common diaphragm gas meter, and has realized combustion gas value equivalence metering under the condition of different temperatures.It is a kind of new combustible gas metering arrangement.
The metering performance of common diaphragm gas meter is in specified conditions (20 ℃) calibrating down, and cubing, yet under different temperatures, uses, because the combustion gas volume change is very big, its metering is just inaccurate.It is outdoor no matter general gas meter, flow meter is installed in, still indoor, temperature all can along with from different places, season difference alter a great deal; Especially northern, winter temperature reaches more than 5 months below 0 ℃, and summer temperature is more than 30 ℃, less than 3 months.Come the metering gas volume with common diaphragm gas meter like this, just science, unreasonable not.When the temperature compensation gas meter, flow meter is worked under different temperatures; Compensating plate in the mechanical temperature conversion equipment squints with temperature variation, is changing rocking arm swing angle; Also just changed the diaphragm reciprocating motion length; Change the size in metered volume-inner membrance storehouse exactly, realized gas quantity matter equivalence metering under the condition of different temperatures, ensured the both sides of supply and demand economic interests.Said diaphragm gas meter belongs to the volumetric metering device, is the inner membrance storehouse that softens and become with a kind of, measures the combustion gas volume.Diaphragm volume---inner membrance storehouse (being commonly called as the revolution volume) that move back and forth once to be contained just.Standard code, under specified conditions (20 ℃), the difference of gas meter, flow meter actual revolution volume and Theoretical Calculation revolution volume is no more than ± and 5%.In fact, common base table is when different temperatures (T), and its revolution volume also subtle change will take place, and, dwindle when temperature is high, increase when temperature is low.We know: gas volume and temperature, pressure are relevant, and when different temperatures, different pressures, gas volume alters a great deal.Therefore, when different temperatures, turn round constancy of volume exactly, measure, also can produce very big value error with volume.Existing is example with the rock gas: analyze from the fuel gases calorific value angle: at pressure is under the constant situation of 101.325kPa; When temperature was 20 ℃, its density was 0.723kg/m3, when temperature is 0 ℃; Its density is 0.7758kg/m3; Just temperature is when 20 ℃ drop to 0 ℃, and the volume of rock gas will dwindle 6.8%.So with the volume of common base table metering rock gas, under cryogenic conditions, in fact, rock gas (calorific value) just loss is very big.
Diaphragm gas meter in the market has multiple structure.By sliding valve movement mode branch: first kind of structure is square guiding valve, divides on both sides linear reciprocating motion; Second kind of structure is that square guiding valve is established at one end, and the center is provided with cam, fork and adjustable rolling disc, and when crank disc rotated, cam drove fork, stirs the guiding valve linear reciprocating motion; The third structure also is that fan-shaped guiding valve becomes fan-shaped reciprocally swinging; The 4th kind of structure be circular guiding valve in the heart, revolving valve.Former structure is simple, poor-performing; The three kinds of structures in back, volume is little, and rationally compact, metering performance is excellent, by wide selection.
Chinese patent once disclosed a kind of " temperature compensation gas meter " (CN2748876, day for announcing 2005.12.28 ZL200420105291.2), and it comprises big pull bar, lower link bar, vertical shaft, epithelium; Big pull bar is connected with vertical shaft, and vertical shaft is connected with epithelium through flap, connects the big rob support that thrermostatic bimetal-plate is processed by attachment screw on the big pull bar, and this big rob support is connected with the lower link bar pin through adjuster bar; Through temperature compensation means is the employing of big rob support and adjuster bar, realizes temperature compensation.This is first kind of structure gas meter of usefulness.
Chinese patent once disclosed a kind of " mechanical temperature compensation gas meter, flow meter " (CN200941058, day for announcing 2007.08.29 ZL200620106802.1), had independent movement in the housing; Be associated with valve seat and rotary valve on it; Be provided with its two ends of connecting rod and be connected with toggle respectively, on rotary valve, axially be associated with the mandrel dish, be associated with temperature-sensitive volute spring sheet on the mandrel dish; Shift fork with inner and outer fork is set in the eccentric orfice of mandrel dish; Fork is held on the outer end of said volute spring sheet in the said shift fork, is provided with its bottom of displacement axle and places in the outer fork of said shift fork, and displacement axle upper end links to each other with said connecting rod.This set possibly realized on second kind of structure gas table; Be difficult to realize on the third structure gas table and be placed on it, because both displacement axle centre distance differ greatly; The temperature compensation principle of setting forth simultaneously is also imprecise, and it is also imperfect to illustrate said structure.
That Chinese patent once disclosed was a kind of " band mechanical temperature conversion equipment diaphragm gas meter " (CN1091404; Day for announcing 2008.08.27 ZL200720191265.X); Have independent movement in the housing, valve seat and valve gap are arranged on the movement, central gear connects with the rotating disc rigidity; Shift fork and temperature-sensitive bimetal composite reed with inside and outside fork is set on the rotating disc; The outer fork of said shift fork is held on the rectilinear end of said spiral helicine temperature-sensitive bimetal composite reed, and in displacement connecting rod post center placed and pitches in the said shift fork, displacement connecting rod post upper end was linked to each other with rocking arm by said connecting rod.This to come positioning and fixing displacement connecting rod post with fork be insecure, and metering performance also is affected.
Chinese patent once disclosed a kind of " mechanical type temperature transition diaphragm gas meter " (CN1726551; Day for announcing 2011.03.16 ZL200920128851.9) and another kind of " cam fork drive and with the diaphragm gas meter of built-in mechanical type temperature transition device " (CN1648301; Day for announcing 2010.01.05 ZL20102 0240802.7); These two kinds of identical points; All be that the compensating plate rectilinear end directly is inserted in the breach at movable rod post middle part, this is more much better than come positioning and fixing displacement connecting rod post with fork.
Because also there is fault of construction in preceding two patents, and are impracticable.The 3rd patent still selected the fork structure for use, has fault of construction equally: the A. measuring accuracy reduces; B. reliability is also poor.Though the 4th, the 5th patent is the compensating plate rectilinear end directly to be inserted in the breach at movable rod post middle part come positioning and fixing movable rod post; But; Distance is bigger between movable rod post upper end and compensating plate seat board, and the skew swing is also just bigger, and positioning and fixing is just poor.
The utility model content
The utility model technical matters to be solved is to provide a kind of novelty simple in structure, has the temperature compensation diaphragm gas meter of accurate temperature compensation characteristic.
The technical scheme of the utility model is following: a kind of temperature compensation diaphragm gas meter; Comprise core body, vertical shaft, rocking arm, connecting rod, rolling disc, camshaft and snap close; Wherein said vertical shaft is installed on the said core body, and said connecting rod is connected with rocking arm on being installed in said vertical shaft, and said rolling disc is fixed on the said camshaft through snap close; Its main points are: the compensating plate assembly is installed on said rolling disc; This compensating plate assembly is made up of compensating plate, compensation bar, compensating plate seat board and movable rod post, and wherein said compensating plate seat board is fixed on the said rolling disc, and the spiral center-side of said compensating plate is fixed on compensating plate seat board below by said compensation bar; The outside rectilinear end that extends of this compensating plate directly is inserted in the moveable connecting rod post down gap; Said movable rod post middle part is stuck in the said compensating plate seat board deep-slotted chip breaker, can slide, and top is connected with rocking arm through said connecting rod.Adopt above structure, when said compensating plate stretches with temperature variation, this compensating plate rectilinear end just squints to the inside and outside; Directly stirring said movable rod post slides to the inside and outside; Thereby changing the angle of said rocking arm swing, thereby changing the diaphragm unit reciprocating motion length, just the size of the revolution volume of gas meter, flow meter; The revolution volume is changed along with temperature variation, realized the compensation purpose.
The core of the utility model is the setting of compensating plate: compensating plate is to turn to Archimedean screw shape reed with temperature-sensitive bimetal composite sheet; The spiral center-side of compensating plate is clamped and is fixed with the hot weld of compensating plate seat board by the compensation bar, becomes rigidity to connect, and the outside rectilinear end that extends of this compensating plate directly is inserted in the movable rod post down gap; Because the rigidity of compensating plate own is fine; Make movable rod post positioning and fixing reliable, movable rod post middle part is stuck in the compensating plate seat board deep-slotted chip breaker by two disc shafts, can slide along deep-slotted chip breaker; And movable rod post top is connected with rocking arm by pull bar, forms four-bar mechanism; When temperature variation, the compensating plate rectilinear end is stirred the movable rod post and is moved to inside and outside skew, and temperature-resistant, compensating plate is also constant, and the movable rod post is played location and fixation.Its projecting point: be exactly connecting rod be enclosed within the movable rod post the position from the compensating plate seat board apart from having reduced, the skew swing is littler, has improved measuring accuracy.Like this; Under specified temp (20 ℃) condition; The place-centric distance of movable rod post is exactly the centre distance of common base table rotating disk connecting rod post, and just the place-centric distance of movable rod post is the same with rolling disc connecting rod post centre distance; Its size has determined diaphragm group to-and-fro movement stroke distances, has just determined the gas meter, flow meter metered volume---the size of revolution volume.Like this; When temperature when 20 ℃ drop to 0 ℃, compensating plate outer linear end squints inwards, stirs the movable rod post and moves inwards; Movable rod post centre distance is reduced; Thereby diaphragm group reciprocating motion length is reduced, changed gas meter, flow meter metered volume---the size in inner membrance storehouse, just made the revolution volume-diminished (about 6.8%).So, see that from the fuel gases calorific value angle temperature compensation gas meter, flow meter reading in the time of 0 ℃ is consistent with reading 20 ℃ the time, its fuel gases calorific value is equivalence just.Therefore, where gas meter, flow meter all is installed in, and all will use under the different temperatures throughout the year.And summer temperature is high, needs negative compensation, but the time is short; And winter temperature is low, need just compensate, but the time is long.Machinery temperature compensation gas meter, flow meter just can be accomplished to compensate under the condition of different temperatures, realizes fuel gases calorific value equivalence metering.
As preferably: on said rolling disc, have the hole, said camshaft stretches in the hole on the said rolling disc, and through said snap close rolling disc is fixed on and becomes rigid attachment on the camshaft.Adopt above structure, camshaft, rolling disc are rigidly connected and are adjustable, realize adjustment gas meter, flow meter error in dipping purpose.
As preferably: more accurate for the temperature compensation that makes the utility model, said compensating plate is two kinds of temperature-sensitive bimetal composite sheet coiled spiral of Archimedes shapes that expansion coefficient is different, this compensating plate outer end shape that is in line.
As preferably: said compensation bar is fixed on the compensating plate seat board, and said compensating plate is installed on this compensation bar, thereby makes that said compensating plate, compensation bar and compensating plate seat board are rigid attachment.
Beneficial effect: the employing temperature-sensitive bimetal composite sheet of the utility model turns to Archimedean screw shape reed sheet by way of compensation, compensating plate is set can solves under different temperatures, the problem of equivalent metering gas value error; The utlity model has characteristics such as simple in structure, safe and reliable, accurate measurement, life cycle be long.
Description of drawings
Fig. 1 is the structure intention of the utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the mounting structure synoptic diagram of compensating plate group among Fig. 1;
Fig. 4 is the mounting structure synoptic diagram of rolling disc 14 among Fig. 1, camshaft 17 and snap close 15;
Fig. 5 is the enlarged diagram of A part among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
See also Fig. 1～Fig. 5: a kind of temperature compensation diaphragm gas meter; It is partly waited by housing part and cartridge assemblies and forms; Said cartridge assemblies partly comprise core body 1, vertical shaft 2, valve grid 3, valve gap 4, Rocker arm 5, down fork 6, guide pole 7, go up compositions such as fork 8, connecting rod 9, compensating plate 10, compensation bar 11, compensating plate seat board 12 movable rod posts 13, rolling disc 14, snap close 15, axis 15, camshaft 17, fork support 18, O shape circle 19, gas outlet 20, rotation axis 21, support 22, conical gear 23, diaphragm 24, collapser 25, parallel-plate 26, flap 27, left shell 28, right shell 29; Diaphragm 24, collapser 25, parallel-plate 26 in said core body 1 chamber makes the chamber of core body 1 become inside and outside two air chambers; Said flap 27, vertical shaft 2 and become rigidity to connect after Rocker arm 5 press-fits; Core body 1 top is provided with said valve grid 3, valve gap 4; Said camshaft 17 is contained on the axis 16, and conical gear connects in the spiral gear of this camshaft 17 and the transmission component, again through the magnetic coupled drive; Drive the counter character wheel and rotate through driving wheel, engaged wheel, realize mechanical count; Cam on the said camshaft 17 promotes to go up fork 8 respectively and stirs valve gap back and forth translation back and forth with following fork 6 simultaneously, distributes turnover gas; Above structure is existing structure, does not give unnecessary details at this, and said vertical shaft 2 is installed on the said core body 1; Said connecting rod 9 is connected with Rocker arm 5 on being installed in said vertical shaft 2, and said rolling disc 14 is fixed on the said camshaft 17 through snap close 15, on said rolling disc 14, the compensating plate assembly is installed; This compensating plate assembly is made up of compensating plate 10, compensation bar 11, compensating plate seat board 12 and movable rod post 13, and wherein said compensating plate seat board 12 is fixed on the said rolling disc 14, and said compensating plate 10 is two kinds of temperature-sensitive bimetal composite sheet coiled spiral of Archimedes shapes that expansion coefficient is different; These compensating plate 10 outer ends shape that is in line; The spiral center-side of this compensating plate 10 is fixed on compensating plate seat board 12 belows by said compensation bar 11, and these compensating plate 10 outside rectilinear ends that extend directly are inserted in moveable connecting rod post 13 down gaps, and said movable rod post 13 middle parts are stuck in said compensating plate seat board 12 deep-slotted chip breakers; Can slide; Top is connected with Rocker arm 5 through said connecting rod 9, and when said compensating plate 10 stretches with temperature variation, these compensating plate 10 rectilinear ends just squint to the inside and outside; Directly stirring said movable rod post 13 slides to the inside and outside; Thereby changing the angle of said Rocker arm 5 swing, thereby changing the diaphragm unit reciprocating motion length, just the size of the revolution volume of gas meter, flow meter; The revolution volume is changed along with temperature variation, realized the compensation purpose.
See also Fig. 4: on said rolling disc 14, have the hole, said camshaft 17 stretches in the hole on the said rolling disc 14, and through said snap close 15 rolling disc 14 is fixed on the camshaft 17 and becomes rigid attachment.
See also Fig. 3: said compensation bar 11 is fixed on the compensating plate seat board 12, and said compensating plate 10 is installed on this compensation bar 11, thereby makes said compensating plate 10, compensation bar 11 and compensating plate seat board 12 be rigid attachment.
The above is merely the preferred embodiment of the utility model; It is not restriction with the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. temperature compensation diaphragm gas meter; Comprise core body (1), vertical shaft (2), rocking arm (5), connecting rod (9), rolling disc (14), camshaft (17) and snap close (15); Wherein said vertical shaft (2) is installed on the said core body (1); Said connecting rod (9) is connected with rocking arm (5) on being installed in said vertical shaft (2); Said rolling disc (14) is fixed on the said camshaft (17) through snap close (15), it is characterized in that: on said rolling disc (14), the compensating plate assembly is installed, this compensating plate assembly is made up of compensating plate (10), compensation bar (11), compensating plate seat board (12) and movable rod post (13); Wherein said compensating plate seat board (12) is fixed on the said rolling disc (14); The spiral center-side of said compensating plate (10) is fixed on compensating plate seat board (12) below by said compensation bar (11), and the outside rectilinear end that extends of this compensating plate (10) directly is inserted in moveable connecting rod post (13) down gap, and said movable rod post (13) middle part is stuck in said compensating plate seat board (12) deep-slotted chip breaker; Can slide, top is connected with rocking arm (5) through said connecting rod (9).
2. temperature compensation diaphragm gas meter according to claim 1; It is characterized in that: on said rolling disc (14), have the hole; Said camshaft (17) stretches in the hole on the said rolling disc (14), and through said snap close (15) rolling disc (14) is fixed on the camshaft (17) and becomes rigid attachment.
3. temperature compensation diaphragm gas meter according to claim 1 is characterized in that: said compensating plate (10) is two kinds of temperature-sensitive bimetal composite sheet coiled spiral of Archimedes shapes that expansion coefficient is different, this compensating plate (10) outer end shape that is in line.
4. temperature compensation diaphragm gas meter according to claim 1; It is characterized in that: said compensation bar (11) is fixed on the compensating plate seat board (12); Said compensating plate (10) is installed on this compensation bar (11), thereby makes said compensating plate (10), compensation bar (11) and compensating plate seat board (12) be rigid attachment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204938041U CN202329714U (en) | 2011-12-02 | 2011-12-02 | Temperature compensation membrane type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204938041U CN202329714U (en) | 2011-12-02 | 2011-12-02 | Temperature compensation membrane type gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202329714U true CN202329714U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204938041U Expired - Lifetime CN202329714U (en) | 2011-12-02 | 2011-12-02 | Temperature compensation membrane type gas meter |
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| Country | Link |
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| CN (1) | CN202329714U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111097A (en) * | 2013-04-17 | 2014-10-22 | 成都技高科技有限公司 | Mechanical compensation membrane type gas meter with reciprocating function |
| 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 |
| CN109738037A (en) * | 2019-02-26 | 2019-05-10 | 威海拙诚燃气安全设备有限公司 | A method of diaphragm gas meter temperature-compensating is solved using tensile stress |
| CN112325964A (en) * | 2020-10-28 | 2021-02-05 | 上海真兰仪表科技股份有限公司 | Temperature compensation gas meter |
-
2011
- 2011-12-02 CN CN2011204938041U patent/CN202329714U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111097A (en) * | 2013-04-17 | 2014-10-22 | 成都技高科技有限公司 | Mechanical compensation membrane type gas meter with reciprocating function |
| 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 |
| CN109738037A (en) * | 2019-02-26 | 2019-05-10 | 威海拙诚燃气安全设备有限公司 | A method of diaphragm gas meter temperature-compensating is solved using tensile stress |
| CN109738037B (en) * | 2019-02-26 | 2024-01-26 | 威海拙诚燃气安全设备有限公司 | Method for solving temperature compensation of membrane type gas meter by using tensile stress |
| CN112325964A (en) * | 2020-10-28 | 2021-02-05 | 上海真兰仪表科技股份有限公司 | Temperature compensation gas meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |