CN201876298U - Fine tuning mechanism for crank of membrane type gas meter - Google Patents
Fine tuning mechanism for crank of membrane type gas meter Download PDFInfo
- Publication number
- CN201876298U CN201876298U CN2010202407912U CN201020240791U CN201876298U CN 201876298 U CN201876298 U CN 201876298U CN 2010202407912 U CN2010202407912 U CN 2010202407912U CN 201020240791 U CN201020240791 U CN 201020240791U CN 201876298 U CN201876298 U CN 201876298U
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- crank
- fine setting
- disc
- gas meter
- setting pointer
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Abstract
The utility model relates to a fine tuning mechanism for a crank of a membrane type gas meter. The utility model is characterized in that the fine tuning mechanism consists of a crank, a crank disc, a crank seat, a crank radial-movement fine tuning pointer and a crank rotation fine tuning pointer, wherein the crank rotation angle and the crank radius of a crank set can be respectively and separately adjusted; and the intrinsic error and the error curve of a movement can be finely adjusted by the synergistic effect of the crank rotation angle and the crank radius, so that the metering characteristics of the membrane type gas meter can be obviously improved. Due to the structure, the fine tuning mechanism for the crank of the membrane type gas meter has the characteristics of being few in parts, compact in structure, low in cost, simple and convenient in adjustment and operation, excellent in performance and the like.
Description
Technical field
The utility model patent relates to a kind of fine adjustment mechanism of diaphragm gas meter meter characteristic, is a type of crank group.
Background technology
Diaphragm gas meter is the measuring apparatus that a kind of revolution volume that utilizes the flexible diaphragm in the measuring room is measured the combustion gas volume.
The metering units of diaphragm gas meter is four measuring rooms that are separated into by flexible diaphragm in rigidity measuring room body.The measuring room air inlet is exactly the combustion gas that absorbs the gas meter, flow meter upstream; It is exactly to gas meter, flow meter downstream delivery of fuel gas that measuring room is given vent to anger.This process is exactly the basis of realizing gas metering.Four measuring rooms are finished an air inlet successively and are given vent to anger and just constitute a revolution volume.By the four-bar mechanism and coupling, the coupling of four measuring rooms that diaphragm drives, the process of gas meter, flow meter continuous measurement is set up in the realization continual air inlet of measuring room and giving vent to anger.The valve port that the air inlet of measuring room or give vent to anger is made up of valve grid, valve gap switches.And the valve port switching is to be controlled by the control gear that diaphragm drives.If valve port switches the upset of " in advance " diaphragm at extreme position, the slope of the graph of errors of diaphragm gas meter will reduce; Otherwise the slope of graph of errors will strengthen.Obviously, if the slope of graph of errors is more little, the revolution volume is accurate more, and the precision of diaphragm gas meter is just high more so.No matter volume is measured and turned round to " in advance " is handled how accurately in every kind of diaphragm gas meter design, the error that all unavoidably make, assembling etc. causes.In order to realize the design object of diaphragm gas meter, just should eliminate these errors, this just needs to adopt the error micro-adjusting mechanism.The crank of diaphragm gas meter adjusting mechanism that can see on the market can reduce three types: first kind of simple pointer formula, use amount maximum; Second kind of two pointer-type, use amount is very rare, only sees in the big flow diaphragm gas meter of indivedual models that Germany produces; The third simple pointer and discrete crank-type, use amount is little." in advance " amount was both finely tuned in the first kind of angle of revolution that can only finely tune crank; Second kind because crank and crank disc are as a whole, do not have essential distinction with simple pointer; The third crank is discrete.Crank angle, radius are regulated respectively.But the crank length stepping is regulated, and step pitch is very thick, and it is more loaded down with trivial details to adjust operation, adjusts effect and also is restricted.
Summary of the invention
The purpose of this utility model provides a kind of fine adjustment that can realize core of membrane type gas meter error and graph of errors.
The technical scheme that realizes above-mentioned purpose and adopt is such, and promptly a kind of membrane type fine adjustment mechanism for crank of diaphragm gas meter is characterized in that by crank, crank disc, crank base, and crank moves radially the fine setting pointer and crank rotates fine setting pointer composition; Wherein:
Crank top is positioned at the radially cylindrical void of crank disc;
The lower end that crank moves radially the fine setting pointer has biasing post or driving lever on round boss and the boss, the boss that crank moves radially fine setting pointer lower end passes the uniform thickness groove that through hole corresponding on the crank disc falls into crank bottom correspondence, and biasing post is arranged in the bar hole of described bottom portion of groove;
The lower end of crank rotation fine setting pointer has biasing post or the driving lever on round boss and the boss, and the through hole that the boss of crank rotation fine setting pointer lower end passes crank disc and crank bottom correspondence makes biasing post be arranged in the bar hole of crank base correspondence;
Crank disc is an one by the inside draw-in groove in edge, lower end and the edge buckle of crank base, crank top is positioned in the radially cylindrical void of crank disc; Horizontally rotate crank move radially the fine setting pointer can allow crank to move along the crank base radius; Horizontally rotating crank rotation fine setting pointer can allow crank to rotate around the crank base axis with crank disc.
The utility model rotates around the axis of crank base owing to said structure allows crank to follow crank disc; Allow crank moving radially: realize the meticulous adjustment of core of membrane type gas meter error and graph of errors with this along crank base; Two fine settings can be convenient to bring into play their synergy respectively, can significantly promote the meter characteristic of diaphragm gas meter.
The utlity model has: part is few, and compact conformation is with low cost, adjust easy and simple to handle, characteristics such as excellent performance.
Above-mentioned fine adjustment mechanism for crank of the present utility model is contained on the camshaft by crank base, is connected with the dead man gear set by cam wheel, again by the magnetic coupling transmission, rotates through gear set drive counter character wheel.
Crank length is a link of the four-bar mechanism of diaphragm driving.Under the fixed situation of four-bar mechanism, rocking arm, crank, these three movable rod members of pull bar all may change the diaphragm stroke within the specific limits, have both finely tuned the revolution volume of diaphragm gas meter.The sensitivity of its effect is according to the series arrangement of rocking arm, crank, pull bar.Because core of membrane type gas meter has two cover four-bar mechanisms related with two diaphragms respectively.Therefore the shared crank of two cover four-bar mechanisms finely tunes the stroke of crank with regard to fine-tuning two diaphragms, has both finely tuned the revolution volume of diaphragm gas meter, does not also need to finely tune the coupling of two cover four-bar mechanisms.Simplify, flexibly.
The fine setting of crank angle is related with " in advance " that valve port switches, can adjust the slope of graph of errors.When the fine setting crank angle changes diaphragm gas meter graph of errors slope, also can change the position of graph of errors in coordinate system a little, both have the effect of the revolution volume that changes diaphragm gas meter.
Obviously, give full play to the synergy of two fine settings of crank of diaphragm gas meter micro-adjusting mechanism, error and graph of errors that just can meticulous adjustment core of membrane type gas meter, thus significantly improve the meter characteristic of diaphragm gas meter.And the rotation of crank, mobile meticulous step pitch and fine setting scope thereof, by affiliated diaphragm gas meter characteristic decision.
Description of drawings
Accompanying drawing 2 is a structure cut-open view of the present utility model;
Accompanying drawing 3,4,5 is the synoptic diagram of three kinds of form crank discs of the utility model;
Accompanying drawing 6 is the preceding graph of errors of collaborative fine setting.
Among the figure: the 1-crank; The 2-crank disc; The 3-crank base; The 4-handle moves radially the fine setting pointer; The 5-crank rotates the fine setting pointer.
Embodiment
Referring to accompanying drawing 1,2, the fine adjustment mechanism for crank of diaphragm gas meter among the figure is characterized in that by crank 1, crank disc 2, crank base 3, and crank moves radially fine setting pointer 4 and crank rotates fine setting pointer 5 compositions; Wherein: crank 1 top is positioned at the radially cylindrical void of crank disc 2; The lower end that crank moves radially fine setting pointer 4 has biasing post or driving lever on round boss and the boss, the boss that crank moves radially fine setting pointer 4 lower ends passes the uniform thickness groove that through hole corresponding on the crank disc 2 falls into crank bottom correspondence, and biasing post or driving lever are arranged in the bar hole of described bottom portion of groove; The lower end of crank rotation fine setting pointer 5 has biasing post or the driving lever on round boss and the boss, and the through hole that the boss of crank rotation fine setting pointer 5 lower ends passes crank disc 2 and crank bottom correspondence makes biasing post or driving lever be arranged in the bar hole of crank base 3 correspondences; Buckle is connected between crank disc 2 and the crank base 3, crank top is positioned in the radially cylindrical void of crank disc; Horizontally rotate crank move radially the fine setting pointer 4 can allow crank to move along the crank base radius; Horizontally rotating crank rotation fine setting pointer 5 can allow crank to rotate around the crank base axis with crank disc.
Accompanying drawing provides among the embodiment, above-mentioned crank disc 2 is an one by the inside draw-in groove in edge, lower end and the edge buckle of crank base 3, draw-in groove described in Fig. 1 has three breach, the edge of crank base 3 has the chimb of three described breach correspondences in territory, and described chimb rotates into described draw-in groove by described breach and realizes that the buckle of two parts connects.
Above-mentioned crank moves radially round boss that fine setting pointer 4 and crank rotate fine setting pointer 5 lower ends and is stuck in the bayonet socket corresponding on the crank disc (locking and do not extracted easily), is marked with equi-distance scale on the rotational trajectory of pointer on the crank disc.
Referring to accompanying drawing 3-5, present situation such as crank disc described in the utility model can circle, sub-circular, the radially cylindrical void on the crank disc is arranged on the radial line of passing the crank disc geometric center.
Later present good consistance referring to 6, two G25 diaphragm gas meters of accompanying drawing by collaborative fine setting, but rate of curve is less.
Claims (3)
1. fine adjustment mechanism for crank of diaphragm gas meter is characterized in that by crank (1), crank disc (2), crank base (3), and crank moves radially fine setting pointer (4) and crank rotates fine setting pointer (5) composition; Wherein:
Crank (1) top is positioned at the radially cylindrical void of crank disc (2);
The lower end that crank moves radially fine setting pointer (4) has biasing post or driving lever on round boss and the boss, the boss that crank moves radially fine setting pointer (4) lower end passes the uniform thickness groove that the upward corresponding through hole of crank disc (2) falls into crank bottom correspondence, and biasing post or driving lever are arranged in the bar hole of described bottom portion of groove;
The lower end of crank rotation fine setting pointer (5) has biasing post or the driving lever on round boss and the boss, and the through hole that the boss of crank rotation fine setting pointer (5) lower end passes crank disc (2) and crank bottom correspondence makes biasing post or driving lever be arranged in the corresponding bar hole of crank base (3);
Buckle is connected between crank disc (2) and the crank base (3), crank top is positioned in the radially cylindrical void of crank disc; Horizontally rotate crank move radially the fine setting pointer (4) can allow crank to move along the crank base radius; Horizontally rotating crank rotation fine setting pointer (5) can allow crank to rotate around the crank base axis with crank disc.
2. fine adjustment mechanism for crank of diaphragm gas meter according to claim 1 is characterized in that: described crank disc (2) is an one by the inside draw-in groove in edge, lower end and the edge buckle of crank base (3).
3. fine adjustment mechanism for crank of diaphragm gas meter according to claim 1, it is characterized in that: the round boss that described above-mentioned crank moves radially fine setting pointer (4) and crank rotation fine setting pointer (5) lower end is stuck in the upward corresponding bayonet socket of crank disc (2), is marked with equi-distance scale on the rotational trajectory of pointer on the crank disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202407912U CN201876298U (en) | 2010-06-29 | 2010-06-29 | Fine tuning mechanism for crank of membrane type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202407912U CN201876298U (en) | 2010-06-29 | 2010-06-29 | Fine tuning mechanism for crank of membrane type gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876298U true CN201876298U (en) | 2011-06-22 |
Family
ID=44164214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202407912U Expired - Lifetime CN201876298U (en) | 2010-06-29 | 2010-06-29 | Fine tuning mechanism for crank of membrane type gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907479A (en) * | 2010-06-29 | 2010-12-08 | 重庆市山城燃气设备有限公司 | Fine adjustment mechanism for crank of diaphragm gas meter |
-
2010
- 2010-06-29 CN CN2010202407912U patent/CN201876298U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907479A (en) * | 2010-06-29 | 2010-12-08 | 重庆市山城燃气设备有限公司 | Fine adjustment mechanism for crank of diaphragm gas meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110622 Effective date of abandoning: 20120725 |