CN108760193B - Rocker positioning structure, gas meter movement tightness detection device and method - Google Patents
Rocker positioning structure, gas meter movement tightness detection device and method Download PDFInfo
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- CN108760193B CN108760193B CN201811033085.8A CN201811033085A CN108760193B CN 108760193 B CN108760193 B CN 108760193B CN 201811033085 A CN201811033085 A CN 201811033085A CN 108760193 B CN108760193 B CN 108760193B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention relates to the field of gas meter movement detection, and aims to solve the problems of long detection time and low efficiency of gas meter movement tightness in the prior art and provide a rocker positioning structure, a gas meter movement tightness detection device and a gas meter movement tightness detection method. The rocker positioning structure comprises a fixedly connecting part and two limiting parts. The fixing portion has a connection structure configured to fix the suction pipe. Both limit parts are fixedly connected to the fixedly connected part, and the limit parts are provided with limit grooves. The rocker positioning structure is configured to move to the limit grooves of the two limit parts to be correspondingly clamped into the two rockers of the gas meter movement to be detected and limit the two rockers at the limit positions of the two rockers under the drive of the motion of the exhaust pipe to the gas outlet cylinder of the detected gas meter movement. The gas meter movement tightness detection device has the beneficial effects that the gas meter movement tightness detection efficiency is high.
Description
Technical Field
The invention relates to the field of gas meter movement detection, in particular to a rocker positioning structure, a gas meter movement tightness detection device and a gas meter movement tightness detection method.
Background
The current working principle of detecting the tightness of the movement of the national gas meter is to fix a valve cover at one position, adopt a negative pressure method to exhaust air from the direction of a gas outlet cylinder of the gas meter, measure the space of a cavity to be smaller and smaller, measure the negative pressure value at the moment after the leather film runs to the limit position, compare with the vacuum degree of equipment and obtain the pressure drop of the cavity to be measured, thereby judging the tightness of the gas meter. The sealability of the multiple chambers needs to be performed multiple times in the same way. Because the rotation volume of the gas meter is larger, the gas with 0.5-1 rotation volume needs to be pumped out to finish the detection of the tightness of the movement of one gas meter, which needs to consume a long time, so that the whole detection time is overlong.
Disclosure of Invention
The invention aims to provide a rocker positioning structure to solve the problems of long detection time and low efficiency of the tightness of a gas meter core in the prior art.
The invention further aims to provide a gas meter movement tightness detection device with the rocker positioning structure.
The invention further aims to provide a gas meter movement tightness detection method based on the rocker positioning structure.
Embodiments of the present invention are implemented as follows:
the embodiment of the invention provides a rocker positioning structure which is used for detecting the tightness of a gas meter movement in cooperation with a gas meter movement tightness detection device. The fixedly connecting part comprises a first plate and a connecting structure, wherein the connecting structure is used for fixedly connecting the exhaust pipe; the limiting part is fixedly connected to the first plate and is parallel to the axis of the exhaust pipe, and is provided with a limiting groove; when the exhaust pipe moves to the air outlet cylinder of the gas meter movement detected by pressing, the rocker positioning structure is configured to move to the limit grooves of the two limit parts to be correspondingly clamped into the two rockers of the gas meter movement to be detected and limit the two rockers at the limit positions of the two rockers under the drive of the movement of the exhaust pipe to the air outlet cylinder of the gas meter movement detected by pressing.
In one implementation of the present embodiment:
the side, far away from the limiting part, of the first plate is provided with a notch, and the connecting structure comprises a fastening strip which is detachably connected with the first plate and closes the notch; the first plate and the fastening strip are used for jointly compressing the exhaust pipe, so that the rocker positioning structure and the exhaust pipe can form a whole moving together.
In one implementation of the present embodiment:
the fastening strip is detachably connected to the side face of the first plate through a screw, and the notch is closed to enclose a circumferential closed axial through matching hole for accommodating and compressing the fixedly connected exhaust tube.
In one implementation of the present embodiment:
the first plate is of a long plate structure; the limiting part comprises two long plate-shaped second plates;
the two second plates are connected to the two long-direction ends of the other side of the first plate, which is opposite to the side where the notch is arranged; and the two second plates and the first plate jointly form a U-shaped structure;
the opening of the limit groove is arranged in the direction of the second plate, which is far away from the first plate.
In one implementation of the present embodiment:
the limiting groove comprises a guide section close to the groove opening and a limiting section close to the groove bottom;
the guide section is in a conical shape with large outside and small inside, and the limit section is a straight section with the width matched with the width of the rocker.
In one implementation of the present embodiment:
the width of the inner end of the guide section is equal to that of the limit section.
The embodiment of the invention also provides a rocker positioning structure which is used for detecting the tightness of the gas meter movement in cooperation with the gas meter movement tightness detection device, wherein the gas meter movement tightness detection device comprises an exhaust pipe for exhausting air, the rocker positioning structure comprises a first plate and two second plates, and the first plate and the two second plates are of an integrated structure; the two second plates are mutually and vertically connected with the first plate at intervals to form a U-shaped structure; a gap is formed in one wide side surface of the first plate; the first plate is detachably connected with a fastening strip, and the fastening strip covers the notch to form a circumferentially closed and axially through matching hole; the matching hole is used for matching with an exhaust pipe for detecting the tightness of the gas meter movement, and the rocker positioning structure and the exhaust pipe are connected into a whole which moves together; one end of the two second plates, which is far away from the first plate, is provided with a limit groove extending along the penetrating direction of the matching hole; and taking the axis of the matching hole as the center, wherein the central included angle of the projection of the two limiting grooves on the first plate surface is equal to the central included angle of the two rockers of the gas meter core relative to the central axis of the gas outlet barrel of the gas meter core at the limit position.
The embodiment of the invention also provides an improved gas meter movement tightness detection device, wherein the rocker positioning structure is fixedly connected to the exhaust pipe of the improved gas meter movement tightness detection device, and the extending direction of the limiting groove of the rocker positioning structure is parallel to the axis of the exhaust pipe.
In one implementation of the present embodiment:
the outer end of the exhaust tube is provided with a boss which expands outwards in the radial direction, and the boss and the rocker positioning structure are limited in the axial direction.
The embodiment of the invention also provides a gas meter movement tightness detection method, which is based on the rocker positioning structure; the gas meter movement tightness detection method comprises a preparation stage and a formal air extraction detection stage; the preparation phase comprises:
moving an exhaust pipe of the tightness detection device of the gas meter core towards the direction of the gas outlet cylinder of the gas meter core until the gas outlet cylinder is pressed and connected; under the drive of this motion of exhaust tube, the rocker positioning structure who is fixedly connected on the exhaust tube limits two rockers of gas table core in the extreme position of both sides.
The rocker positioning structure in the embodiment of the invention is fixedly connected to the exhaust pipe for detecting the tightness of the gas meter movement, and when the exhaust pipe is pressed and connected with the gas outlet cylinder of the detected gas meter movement, the limiting grooves of the two limiting parts move to the two rockers correspondingly forking the gas meter movement along with the exhaust pipe, so that the two rockers are kept at the limit positions on the two sides of the rockers, and the follow-up formal detection steps such as gas extraction and the like can be performed.
Therefore, by adopting the rocker positioning structure, the gas meter movement tightness detection device and the gas meter movement tightness detection method in the embodiment, the preparation stage required by the gas meter movement tightness detection can be greatly reduced, the movement tightness detection time is shortened by 40%, and the overall detection efficiency is improved. The effect is particularly remarkable for the gas meter movement with more chambers to be detected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of a state of fit of an improved gas meter movement leak tightness detection device in an embodiment of the invention when used to detect gas meter movement leak tightness;
FIG. 2 is an expanded view of FIG. 1;
fig. 3 is a schematic diagram of a rocker positioning structure according to an embodiment of the present invention.
Icon: 100-improved gas meter movement tightness detection device; 10-a rocker positioning structure; 10 a-a fastening part; 10b' -a second plate; 10 b-a limiting part; 11-a first plate; 12-fastening strips; 20-a gas meter movement tightness detection device; 20 a-an exhaust tube; 20 b-boss; 30-a gas meter movement; 30 a-rocker; 30 b-an air outlet tube; 30 c-a valve cover; c0-a limit groove; c1-a guide section; c2-a limiting section; k1-notch; k2-mating holes; d1-a screw.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like in the description of the present invention, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," and the like in the description of the present invention, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Examples
Fig. 1 is a diagram showing a state of cooperation of the improved gas meter movement tightness detection device 100 according to the embodiment of the present invention when the gas meter movement 30 is tightly sealed.
Fig. 2 is an expanded view of fig. 1. Referring to fig. 2, the top of the gas meter core 30 of the embodiment is provided with an upward gas outlet tube 30b, two rockers 30a positioned on two sides of the gas outlet tube 30b, and a valve cover 30 c. The gas meter cartridge 30 has a plurality of metering chambers (not shown) inside. The different metering chambers may be communicated to the outlet barrel 30b by rotating the valve cap 30 c. The negative pressure method for measuring the tightness of the gas meter movement 30 comprises the steps of adopting the exhaust tube 20a of the existing gas meter movement tightness detection device 20 to extract the gas in the metering cavity communicated with the exhaust tube 30b under the state that the two rocking bars 30a are kept at the limit positions on the two sides respectively, and then comparing and judging the tightness through negative pressure. A number of the above operations are typically required for a multi-metering chamber gas meter cartridge 30. Wherein the limiting of the rocker 30a position is independent of the actual measurement, being a preparation phase. The prior art needs to consume more time to carry out the stage, so that the problem of low detection efficiency exists.
The improved gas meter movement tightness detection device 100 in the embodiment adopts a mode that a rocker positioning structure 10 is fixedly connected on an exhaust pipe 20a of an existing gas meter movement 30 tightness detection platform based on a negative pressure method, so that the preparation stage time required by detection is reduced, the detection efficiency is improved, and the movement tightness detection time is shortened by 40%.
Fig. 3 is a schematic diagram of a rocker positioning structure 10 according to an embodiment of the present invention. Referring to fig. 3, the rocker positioning structure 10 includes a fixing portion 10a and two limiting portions 10b. The fixing portion 10a has a connection structure configured to fix the suction pipe 20a. Both limit parts 10b are fixedly connected to the fixedly connected part 10a, and the limit parts 10b are provided with limit grooves C0. When the air extraction pipe 20a moves to press the air outlet cylinder 30b of the detected gas meter movement 30, the rocker positioning structure 10 is configured to move to enable the limit grooves C0 of the two limit parts 10b to be correspondingly clamped into the two rockers 30a of the gas meter movement 30 to be detected and limit the two rockers 30a at the limit positions thereof under the drive of the movement of the air extraction pipe 20a to the air outlet cylinder 30b of the detected gas meter movement 30. The extending direction of the limit groove C0 of the rocker positioning structure 10 is parallel to the axis of the exhaust tube 20a. To achieve axial positioning of the extraction tube 20a and the rocker positioning structure 10, the outer end of the extraction tube 20a is provided with a radially outwardly expanding boss 20b. In general, the movement of the suction tube 20a to engage the air outlet tube 30b of the detected gas meter movement 30 is a movement approaching the air outlet tube 30b along the axis of the air outlet tube 30b until engagement.
In one implementation of the present embodiment, referring to fig. 2 and 3, the fastening portion 10a includes a first plate 11 having a notch K1 at one side and a fastening strip 12 detachably connected to the first plate 11 and closing the notch K1. The first plate 11 and the fastening strip 12 are used for jointly pressing the suction tube 20a, so that the rocker positioning structure 10 and the suction tube 20a can form a jointly moving whole. Wherein, two holes are formed on the fastening strip 12 and detachably connected to the side surface of the first plate 11 by two screws D1, and the notch K1 is closed to form a circumferential closed axial through matching hole K2 for accommodating and compressing the suction tube 20a, so as to fix the rocker positioning structure 10 to the suction tube 20a.
With continued reference to fig. 2 and 3, in one implementation of the present embodiment, the first plate 11 is a long plate structure. The stopper portion 10b is a second plate member 10b' having a long plate shape. Two second plates 10b' are connected to the first plate 11 at both ends in the longitudinal direction of the other side opposite to the side thereof where the notch K1 is provided. And the two second plates 10b' and the first plate 11 together form a U-shaped structure. The limiting groove C0 is disposed at an end of the second plate 10b' away from the first plate 11. To facilitate guiding the rocker 30a into the limit groove C0, the limit groove C0 includes a guide section C1 near the groove opening and a limit section C2 near the groove bottom. The guiding section C1 is in a conical shape with large outside and small inside, and the limiting section C2 is a straight section with the width matched with the width of the rocker 30 a. When the exhaust tube 20a axially approaches the air outlet tube 30b, the two limiting grooves C0 axially approach the two rockers 30a, and finally the exhaust tube 20a is pressed and communicated with the air outlet tube 30b, the two limiting grooves C0 are clamped on the two rockers 30a, and the rockers 30a are limited in the lateral limiting position. The guide section C1 with the large outside and the small inside can conveniently guide the rocker 30a to enter, so that the rocker 30a can still be guided into the limit groove C0 even if the position of the rocker 30a deviates from the limit position, and finally the rocker 30a is accurately limited in the limit section C2 of the limit groove C0. To further ensure accurate spacing, the inner end width of the guide section C1 is equal to the width of the spacing section C2.
The rocker positioning structure 10 provided by the embodiment of the present invention is generally described below. With continued reference to fig. 1, 2 and 3, the rocker positioning structure 10 in this embodiment is used in combination with a gas meter movement tightness detection device 20 to detect tightness of a gas meter movement 30, where the gas meter movement tightness detection device 20 includes an exhaust tube 20a for exhausting air, and includes a first plate 11 and two second plates 10b ', and the first plate 11 and the two second plates 10b' are an integral structure. Two second plates 10b' are vertically connected to the first plate 11 at a distance from each other to form a U-shaped structure. A notch K1 is provided on one widthwise side of the first plate 11. The first plate 11 is detachably connected with a fastening strip 12, and the fastening strip 12 covers the notch K1 to form a matching hole K2 which is circumferentially closed and axially penetrated. The matching hole K2 is used for matching with the exhaust pipe 20a for detecting the tightness of the gas meter movement 30, and connects the rocker positioning structure 10 and the exhaust pipe 20a into a whole moving together. One end of the two second plate members 10b' away from the first plate member 11 is provided with a limit groove C0 extending along the penetrating direction of the mating hole K2. With the axis of the matching hole K2 as the center, the central included angle of the projection of the two limiting grooves C0 on the surface of the first plate 11 is equal to the central included angle of the two rockers 30a of the gas meter core 30 relative to the central axis of the gas outlet barrel 30b of the gas meter core 30 at the limit position, so that after matching, the rockers 30a can be limited to the limit positions at two sides of the rockers.
Referring to fig. 1, fig. 2, and fig. 3 in cooperation, the embodiment of the invention further provides a method for detecting tightness of a movement of a gas meter, which is based on the rocker positioning structure 10. The gas meter movement tightness detection method comprises a preparation stage and a formal air extraction detection stage. The preparation stage comprises the following steps: the exhaust pipe 20a of the gas meter movement tightness detection device 20 moves to the direction of the air outlet cylinder 30b of the gas meter movement 30 to press fit and connect the air outlet cylinder 30b. The rocker positioning structure 10 fixedly connected to the air extraction pipe 20a limits the two rockers 30a of the gas meter movement 30 to the limit positions at two sides under the driving of the movement of the air extraction pipe 20a. And after the preparation stage is finished, performing a formal air extraction detection stage.
The rocker positioning structure 10 in the embodiment of the invention is fixedly connected to the exhaust pipe 20a for detecting the tightness of the gas meter core 30, and when the exhaust pipe 20a is pressed and connected with the air outlet cylinder 30b of the detected gas meter core 30, the limit grooves C0 of the two limit parts 10b move to the two rockers 30a correspondingly forking the gas meter core 30 along with the exhaust pipe 20a, so that the two rockers 30a are kept at the limit positions on two sides of the rockers, and the subsequent formal detection steps such as air extraction can be performed.
Therefore, by adopting the rocker positioning structure 10, the gas meter movement tightness detection device 20 and the gas meter movement tightness detection method in the embodiment, the preparation stage time required by gas meter movement tightness detection can be greatly reduced, and the overall detection efficiency is further improved. This effect is particularly pronounced for gas meter cartridges 30 having a large number of chambers to be tested.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a rocker location structure for cooperation gas table core leakproofness detection device uses in order to detect the leakproofness of gas table core, gas table core leakproofness detection device is including the exhaust tube that is used for bleeding, its characterized in that:
further comprises:
a fixing portion including a first plate and a connection structure configured to fix the exhaust pipe;
the limiting part is fixedly connected to the first plate and is parallel to the axis of the exhaust pipe, and the limiting part is provided with a limiting groove;
when the exhaust pipe moves to press the air outlet cylinder of the detected gas meter movement, the rocker positioning structure is configured to move to enable the limit grooves of the two limit parts to be correspondingly clamped into the two rockers of the gas meter movement to be detected and limit the two rockers at the limit positions of the two rockers under the drive of the movement of the exhaust pipe to the air outlet cylinder of the detected gas meter movement;
the side, far away from the limiting part, of the first plate is provided with a notch, and the connecting structure comprises a fastening strip which is detachably connected with the first plate and closes the notch; the first plate and the fastening strip are used for jointly pressing the exhaust pipe, so that the rocker positioning structure and the exhaust pipe can form a whole which moves together;
the fastening strip is detachably connected to the side face of the first plate through a screw, the notch is closed, and a circumferential closed axial through matching hole is formed in a surrounding mode and used for accommodating and compressing the fixedly connected exhaust pipe;
the first plate is of a long plate structure; the limiting part comprises two long plate-shaped second plates;
the two second plates are connected to the two long-direction ends of the other side of the first plate, which is opposite to the side where the notch is arranged; and the two second plates and the first plate jointly form a U-shaped structure;
the opening of the limit groove is arranged in the direction of the second plate, which is far away from the first plate.
2. The rocker positioning structure of claim 1, wherein:
the limiting groove comprises a guide section close to the groove opening and a limiting section close to the groove bottom;
the guide section is in a conical shape with large outside and small inside, and the limit section is a straight section with the width matched with the width of the rocker.
3. The rocker positioning structure of claim 2, wherein:
the width of the inner end of the guide section is equal to that of the limit section.
4. An improved generation gas table core leakproofness detection device, its characterized in that:
the rocker positioning structure of any one of claims 1-3 is fixedly connected to an exhaust pipe of the improved gas meter movement tightness detection device, and the extending direction of the limiting groove of the rocker positioning structure is parallel to the axis of the exhaust pipe.
5. The improved gas meter core leak tightness detection device of claim 4, wherein:
the outer end of the exhaust tube is provided with a boss which expands outwards in the radial direction, and the boss and the rocker positioning structure are limited in the axial direction.
6. A gas meter movement tightness detection method is characterized in that:
the gas meter movement tightness detection method is based on the rocker positioning structure according to any one of claims 1-3; the gas meter movement tightness detection method comprises a preparation stage and a formal air extraction detection stage;
the preparation phase comprises:
moving an exhaust pipe of the tightness detection device of the gas meter core towards the direction of the gas outlet cylinder of the gas meter core until the gas outlet cylinder is pressed and connected; under the drive of this motion of exhaust tube, the rocker positioning structure who is fixedly connected on the exhaust tube limits two rockers of gas table core in the extreme position of both sides.
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| CN201811033085.8A CN108760193B (en) | 2018-09-05 | 2018-09-05 | Rocker positioning structure, gas meter movement tightness detection device and method |
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| CN113029445B (en) * | 2019-12-24 | 2022-05-17 | 沈阳新松机器人自动化股份有限公司 | Gas table core reveals accredited testing organization |
| CN114260698B (en) * | 2020-09-16 | 2022-12-06 | 成都秦川物联网科技股份有限公司 | Device and method for assembling rocker and flag of Internet of things intelligent gas meter |
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| CN108760193A (en) | 2018-11-06 |
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