CN105841768B - Unpowered sliding block anti-inversion device for gas meter and anti-inversion method - Google Patents
Unpowered sliding block anti-inversion device for gas meter and anti-inversion method Download PDFInfo
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- CN105841768B CN105841768B CN201610456910.XA CN201610456910A CN105841768B CN 105841768 B CN105841768 B CN 105841768B CN 201610456910 A CN201610456910 A CN 201610456910A CN 105841768 B CN105841768 B CN 105841768B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/007—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus comprising means to prevent fraud
Abstract
The invention discloses an unpowered slider reverse installation prevention device for a gas meter, wherein a shell corresponding to a gas inlet of a gas meter body is internally connected with a reverse installation prevention device, 1 gas inlet cavity is arranged in the reverse installation prevention device, the top of the gas inlet cavity is an anti-theft gas inlet, the bottom of the gas inlet cavity is provided with a supporting block, a reverse installation prevention slider is arranged on the supporting block, horizontal gas outlet holes penetrating through the inside and the outside of the gas inlet cavity are also formed in the periphery of the reverse installation prevention device, the horizontal gas outlet holes are symmetrically arranged along the central axis of the reverse installation prevention device, and vertical gas outlet holes penetrating through the inside and the outside of the gas inlet cavity are formed in the supporting block; the anti-inverted slide block is of a cone-like sphere structure and comprises an upper semi-ellipsoid structure and a lower arc-shaped sphere structure, wherein the horizontal center line of the upper semi-ellipsoid structure is positioned above the horizontal center line of the horizontal air outlet hole. The gas meter can be prevented from being discharged from the gas meter after being reversely arranged, the sensitivity is high in the using process, the structure is simple, and the use is convenient.
Description
Technical Field
The invention relates to an anti-reverse installation device and an anti-reverse installation method, in particular to an unpowered sliding block anti-reverse installation device and an anti-reverse installation method for a gas meter.
Background
The gas meter is widely applied to our life as a metering tool. The working principle is that after fuel gas enters from the gas inlet, the gear mechanism is driven to rotate, the counting mechanism is driven to rotate while the gear mechanism rotates to realize metering, and the metered fuel gas is discharged from the gas outlet and used. However, a problem exists in the use process of the gas meter, that is, when people connect the gas outlet of the gas meter with the gas inlet pipe, gas enters the machine core from the gas outlet and is finally discharged from the gas inlet to be used, the gear mechanism cannot rotate in the whole process, and the metering work cannot be realized. Therefore, some people flip the gas meter to save the gas cost, and steal the gas. This action has brought a large amount of losses for the gas company, need improve current gas table structure for this reason, and when the flip-chip with the gas table, the gas can not be discharged from the gas table. At present, various anti-reverse gas meters are available in the market, but the problems of the gas meters are as follows: 1. the sensitivity is not high, and when the air inflow is less, the anti-reverse device does not work; 2. the anti-inversion device has a complex structure and higher cost, is mostly electrically controlled and is easy to damage.
Disclosure of Invention
The invention aims to provide an unpowered sliding block anti-reverse installation device and an anti-reverse installation method for a gas meter. The gas meter can be prevented from being discharged from the gas meter after being inversely installed, the sensitivity is higher in the using process, the structure is simple, the use is convenient, the cost is lower, and the damage is not easy.
The technical scheme of the invention is as follows: an unpowered slider reverse installation prevention device for a gas meter is characterized in that a reverse installation prevention device is connected inside a shell corresponding to a gas inlet of a gas meter body, 1 gas inlet cavity is arranged inside the reverse installation prevention device, the top of the gas inlet cavity is an anti-theft gas inlet, the bottom of the gas inlet cavity is provided with a supporting block, a reverse installation prevention slider is arranged on the supporting block, horizontal gas outlet holes penetrating through the inside and the outside of the gas inlet cavity are further formed in the periphery of the reverse installation prevention device, the horizontal gas outlet holes are symmetrically arranged along the central axis of the reverse installation prevention device, and vertical gas outlet holes penetrating through the inside and the outside of the gas inlet cavity are formed in the supporting block; the anti-inverted slide block is of a cone-like sphere structure and comprises an upper semi-ellipsoid structure and a lower arc-shaped sphere structure, wherein the horizontal center line of the upper semi-ellipsoid structure is positioned above the horizontal center line of the horizontal air outlet hole.
According to the unpowered sliding block anti-inversion device for the gas meter, the minor axis diameter of the upper semi-ellipsoid structure is 17/21-18/21 of the width of the gas inlet cavity, and the minor axis diameter of the upper semi-ellipsoid structure subtracted from the width of the gas inlet cavity is larger than or equal to 3mm and smaller than or equal to 6 mm.
According to the unpowered sliding block anti-inversion device for the gas meter, the minor axis diameter of the upper semi-ellipsoid structure is 17-18 mm.
According to the unpowered sliding block anti-inversion device for the gas meter, the diameter of the long axis of the upper semi-ellipsoid structure is 34-38 mm.
According to the unpowered sliding block anti-inversion device for the gas meter, the radius of the lower arc sphere structure is 21.25-27.75 mm, and the angle of the lower arc sphere structure is 37.85-50.1 degrees.
According to the unpowered sliding block anti-inversion device for the gas meter, the supporting block is 2-3 mm in height.
According to the unpowered sliding block anti-inversion device for the gas meter, the top of the gas inlet cavity is of a cone structure.
According to the unpowered sliding block anti-inversion device for the gas meter, the horizontal central line of the upper semi-ellipsoid structure is located 1mm above the horizontal central line of the horizontal gas outlet, and the width of the horizontal gas outlet is 3 mm.
A gas meter reverse installation prevention method is characterized in that a reverse installation prevention device is connected to an air inlet of an inner shell of a gas meter, when the gas meter is reversely installed, gas enters from an air outlet of the gas meter and enters an air inlet cavity through a vertical air outlet and a horizontal air outlet of the reverse installation prevention device, negative pressure is generated when airflow entering through the horizontal air outlet flows through the surface of a reverse installation prevention sliding block, the reverse installation prevention sliding block is lifted upwards under the combined action of bottom airflow, a theft-proof air inlet is blocked by the head end of the reverse installation prevention sliding block, and the gas cannot be discharged out of the gas meter through the theft-proof air inlet.
The invention has the beneficial effects that: compared with the prior art, the anti-reverse-installation device is arranged in the gas inlet cavity of the gas meter, and the structure and the installation position of the anti-reverse-installation sliding block are limited, so that when gas enters the gas inlet cavity from the horizontal gas outlet when the gas reversely enters, a negative pressure effect is generated on a gas flow boundary when the gas flow flows through the anti-reverse-installation sliding block, the anti-reverse-installation sliding block gradually moves upwards under the combined action of bottom gas flow until the anti-theft gas inlet is finally blocked, and the gas is prevented from being discharged from the gas meter when the gas meter is reversely installed. The anti-reverse device is simple in structure, anti-theft work can be realized by depending on the airflow action of gas, electric power auxiliary control is not needed, the cost of the whole anti-reverse device is only 15% of the cost of the gas meter, the cost of the gas meter is not greatly improved, and the burden of a user is reduced. Through comparing our product with A, B, C type anti-falling gas meter that the market is sold now, can know from the experimental data in table 1 that our gas meter can not break down for more than 5000 hours of continuous use, and when the admission pressure was 5kpa, the anti-falling device just started to act, and sensitivity is higher, and the market price all will be lower than other products a lot.
TABLE 1 gas meter comparison test of various types
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
reference numerals: the gas meter comprises a gas meter body 1, a gas inlet 2, an anti-reverse device 3, a gas inlet cavity 4, an anti-theft gas inlet 5, a support block 6, an anti-reverse slider 7, an upper semi-elliptical sphere structure 72, a lower arc sphere structure 8, a horizontal gas outlet hole 9 and a vertical gas outlet hole 9.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps: an unpowered slider anti-inversion device for a gas meter is shown in an attached figure 1-2 and comprises a gas meter body 1, wherein an anti-inversion device 3 is connected inside a shell corresponding to a gas inlet 2 of the gas meter body 1, 1 gas inlet cavity 4 is arranged inside the anti-inversion device 3, an anti-theft gas inlet 5 is arranged at the top of the gas inlet cavity 4, a supporting block 6 is arranged at the bottom of the gas inlet cavity 4, an anti-inversion slider 7 is arranged on the supporting block 6, a horizontal gas outlet hole 8 penetrating through the inside and the outside of the gas inlet cavity 4 is further formed in the periphery of the anti-inversion device 3, the horizontal gas outlet holes 8 are symmetrically arranged along the central axis of the anti-inversion device 3, and a vertical gas outlet hole 9 penetrating through the inside and the outside of the gas inlet cavity 4 is formed in the supporting block 6; the anti-inverted slide block 7 is of a cone-like sphere structure and comprises an upper semi-ellipsoid structure 71 and a lower arc-shaped sphere structure 72, wherein the horizontal center line of the upper semi-ellipsoid structure 71 is positioned above the horizontal center line of the horizontal air outlet 8.
The anti-reverse installation method of the gas meter comprises the steps that when the gas inlet 2 of the gas meter body 1 is connected with a gas inlet pipeline, the gas meter is of a forward installation structure, gas enters the gas inlet cavity 4 from the gas inlet 2 through the anti-theft gas inlet 5, then is discharged from the horizontal gas outlet 8 and the vertical gas outlet 9, and enters the gas meter and finally is discharged from the gas outlet of the gas meter. When the gas outlet of the gas meter body 1 is connected with the gas inlet pipeline, the gas meter is of an inverted structure, at the moment, gas enters the gas meter from the gas inlet pipeline through the gas outlet, then enters the gas inlet cavity 4 from the vertical gas outlet 9 and the horizontal gas outlet 8, when airflow entering from the horizontal gas outlet 8 flows through the surface of the upper semi-elliptical sphere structure 71, a negative pressure effect is formed on the surface area of the surface, under the action of a plurality of symmetrical negative pressures and the action of airflow entering from the vertical gas outlet 9, the anti-inversion sliding block 7 can be gradually lifted upwards, and finally the head end of the upper semi-elliptical sphere structure 71 is clamped into the anti-theft gas inlet 5, so that the gas is prevented from being discharged from the anti-theft gas inlet 5, and the aim of inverted prevention is finally achieved. In order to form a negative pressure effect, the anti-reverse installation sliding block 7 is arranged to be of a cone-like sphere structure. The structure comprises an upper semi-elliptic sphere structure 71 and a lower circular arc sphere structure 72, wherein the horizontal center line of the upper semi-elliptic sphere structure 71 is positioned above the horizontal center line of the horizontal air outlet hole 8, and the anti-reverse slide block 7 structure obtained through the arrangement can form negative pressure on the surface of the air flow after the air flow enters from the horizontal air outlet hole 8. In order to ensure that the air flow entering the air inlet cavity 4 from the horizontal air outlet hole 8 will not blow the anti-reverse slide block 7 from one side to the other side, the horizontal air outlet holes 8 are symmetrically arranged on the anti-reverse device 3.
The minor axis diameter of upper portion hemiellipsoid structure 71 is 17/21 ~ 18/21 of air inlet cavity 4 width, and the minor axis diameter of air inlet cavity 4 width minus upper portion hemiellipsoid structure 71 is more than or equal to 3mm, is less than or equal to 6 mm. The configuration of the upper hemi-ellipsoidal structure 71 is thus defined by this dimensional definition, which makes the effect of the negative pressure effect generated by the air flow more pronounced, thereby contributing more to the resistance of the flip-chip slider 7 to rising. The anti-inverted slide block 7 is made of light cork or hollow plastic, so that the anti-inverted slide block can rise after being stressed, and meanwhile, the cork or the plastic is pressed to be in closer contact with the anti-theft air inlet 5, so that the gas cannot leak out from a gap between the cork and the anti-theft air inlet.
The diameter of the minor axis of the upper semi-ellipsoid structure 71 is 17-18 mm, the diameter of the major axis of the upper semi-ellipsoid structure 71 is 34-38 mm, the radius of the lower arc-shaped sphere structure 72 is 21.25 mmm-27.75 mm, and the angle is 37.85-50.1 degrees. The structure of the upper semi-ellipsoidal structure 71 is further defined by the dimensional definition, which makes the effect of the negative pressure generated by the air flow more pronounced, thus contributing more to the resistance of the flip-chip slider 7 to rising.
The major axis diameter of upper portion hemiellipsoid structure 71 is 36mm, the radius of lower part circular arc spheroid structure 72 is 21.25mm, and its angle is 50.1 degrees, the minor axis diameter of upper portion hemiellipsoid structure 71 is 18mm, and the width of air inlet cavity 4 is 21mm, and the horizontal central line of upper portion hemiellipsoid structure 71 is located the upper 1mm position department of the horizontal central line of horizontal venthole 8, and the width of horizontal venthole 8 is 3mm, when the size of each part of preventing reverse installation device 3 is limited through above numerical value, the negative pressure effect that prevents reverse installation device 3 and produce that obtains is most showing.
The height of the supporting block 6 is 2 mm-3 mm, the diameter of the supporting block 6 is only about 3mm, the bottom surface of the anti-reverse slide block 7 can be prevented from directly contacting with the surface of the vertical air outlet hole 9 by arranging the supporting block 6, the area of the vertical air outlet hole 9 is reduced, and the air inlet and outlet amount is prevented from being reduced.
The top of the air inlet cavity 4 is of a cone structure, and the cone structure is matched with the head end structure of the upper semi-elliptical sphere structure 71, so that under the action of negative pressure, the anti-reverse slide block 7 is in seamless contact with the air inlet cavity 4 finally, and gas leakage is avoided.
Claims (9)
1. The utility model provides a gas table is with unpowered slider anti-reverse installation device which characterized in that: an anti-inverted device (3) is connected inside a shell corresponding to an air inlet (2) of a gas meter body (1), 1 air inlet cavity (4) is arranged inside the anti-inverted device (3), an anti-theft air inlet (5) is arranged at the top of the air inlet cavity (4), a supporting block (6) is arranged at the bottom of the air inlet cavity (4), an anti-inverted slider (7) is arranged on the supporting block (6), horizontal air outlet holes (8) penetrating through the air inlet cavity (4) are further formed in the periphery of the anti-inverted device (3), the horizontal air outlet holes (8) are symmetrically arranged along the central axis of the anti-inverted device (3), and vertical air outlet holes (9) penetrating through the air inlet cavity (4) are formed in the supporting block (6); the anti-inverted slide block (7) is of a cone-like sphere structure and comprises an upper semi-elliptic sphere structure (71) and a lower arc sphere structure (72), wherein the horizontal center line of the upper semi-elliptic sphere structure (71) is positioned above the horizontal center line of the horizontal air outlet hole (8);
be connected with at the interior casing air inlet department of gas table and prevent reverse installation device, when the gas table flip-chip, the gas gets into from the gas vent of gas table, vertical venthole and the horizontal venthole through preventing reverse installation device enter into the air inlet cavity, the air current that the horizontal venthole got into produces the negative pressure effect when preventing reverse installation slider surface, under bottom air current combined action, will prevent reverse installation slider upwards lifting, prevent that the head end of reverse installation slider plugs up the theftproof air inlet, the gas can't be outside the gas table of discharging through the theftproof air inlet.
2. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the minor axis diameter of upper portion hemiellipsoid structure (71) is 17/21 ~ 18/21 of air inlet cavity (4) width, and air inlet cavity (4) width subtracts the minor axis diameter more than or equal to 3mm of upper portion hemiellipsoid structure (71), and less than or equal to 6 mm.
3. The unpowered slider anti-flip device for the gas meter according to claim 2, characterized in that: the minor axis diameter of the upper semi-ellipsoid structure (71) is 17-18 mm.
4. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the diameter of the long axis of the upper semi-ellipsoid structure (71) is 34-38 mm.
5. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the radius of the lower arc spherical structure (72) is 21.25-27.75 mm, and the angle is 37.85-50.1 degrees.
6. The unpowered slider anti-flip device for the gas meter according to claim 5, characterized in that: the radius of the lower arc spherical structure (72) is 21.25mm, and the angle is 50.1 degrees.
7. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the height of the supporting block (6) is 2 mm-3 mm.
8. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the top of the air inlet cavity (4) is of a cone structure.
9. The unpowered slider anti-flip device for a gas meter according to claim 1, characterized in that: the horizontal center line of the upper semi-ellipsoid structure (71) is positioned 1mm above the horizontal center line of the horizontal air outlet hole (8), and the width of the horizontal air outlet hole (8) is 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610456910.XA CN105841768B (en) | 2016-06-22 | 2016-06-22 | Unpowered sliding block anti-inversion device for gas meter and anti-inversion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610456910.XA CN105841768B (en) | 2016-06-22 | 2016-06-22 | Unpowered sliding block anti-inversion device for gas meter and anti-inversion method |
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| CN105841768A CN105841768A (en) | 2016-08-10 |
| CN105841768B true CN105841768B (en) | 2022-04-15 |
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| CN201610456910.XA Active CN105841768B (en) | 2016-06-22 | 2016-06-22 | Unpowered sliding block anti-inversion device for gas meter and anti-inversion method |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007670Y (en) * | 2007-03-01 | 2008-01-16 | 李伦章 | Gas meter anti-gas stolen and anti-inverse water protective equipment |
| CN101038195B (en) * | 2007-04-09 | 2010-10-06 | 段海 | Electromechanical integrated gas meter anti-disassembling device |
| CN101556175A (en) * | 2008-04-08 | 2009-10-14 | 隋明祥 | Anti-disassembly, anti-reversion, anti-pulsation, antirust and antidrip energy-saving water meter |
| CN201837424U (en) * | 2010-07-12 | 2011-05-18 | 苗华利 | Anti-theft gas and anti-counterflow gas meter device |
| CN102063764B (en) * | 2011-01-25 | 2012-09-26 | 邵泽华 | Intelligent gas meter of Internet of things and control system thereof |
| CN104751570B (en) * | 2015-03-31 | 2017-10-31 | 成都秦川物联网科技股份有限公司 | IC-card intelligent quality flow gas table and its management system |
| CN204831388U (en) * | 2015-06-04 | 2015-12-02 | 江西百川水表有限公司 | High -sensitive watermeter |
| CN205080657U (en) * | 2015-10-30 | 2016-03-09 | 四川泰鹏测控仪表科技有限公司 | Can prevent expense of collecting in advance gas table against current |
| CN105424120A (en) * | 2015-11-11 | 2016-03-23 | 四川鹏翔电子科技有限责任公司 | Gas meter capable of automatically cutting off water inflow |
| CN205785388U (en) * | 2016-06-22 | 2016-12-07 | 贵州天益仪表科技有限公司 | Gas meter, flow meter is with unpowered slide block Anti-inversion device |
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Effective date of registration: 20170516 Address after: Choi Wan Road Industrial Zone, Xia Xia Yun Yun Zhen Pingba District 561104 Guizhou city of Anshun Province Applicant after: GUIZHOU TIANYI INSTRUMENT TECHNOLOGY CO., LTD. Applicant after: GUIYANG VOCATIONAL AND TECHNICAL COLLEGE Address before: Choi Wan Road Industrial Zone, Xia Xia Yun Yun Zhen Pingba District 561104 Guizhou city of Anshun Province Applicant before: GUIZHOU TIANYI INSTRUMENT TECHNOLOGY CO., LTD. Applicant before: Zhang Fang Applicant before: Ma Yangyang |
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