KR100902344B1 - Clamping device for gas meter tester - Google Patents

Clamping device for gas meter tester Download PDF

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Publication number
KR100902344B1
KR100902344B1 KR1020080082291A KR20080082291A KR100902344B1 KR 100902344 B1 KR100902344 B1 KR 100902344B1 KR 1020080082291 A KR1020080082291 A KR 1020080082291A KR 20080082291 A KR20080082291 A KR 20080082291A KR 100902344 B1 KR100902344 B1 KR 100902344B1
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KR
South Korea
Prior art keywords
gas
gas meter
clamping
gas outlet
gas inlet
Prior art date
Application number
KR1020080082291A
Other languages
Korean (ko)
Inventor
이덕기
이천희
최승영
Original Assignee
이천희
주식회사 대덕기술
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Filing date
Publication date
Application filed by 이천희, 주식회사 대덕기술 filed Critical 이천희
Priority to KR1020080082291A priority Critical patent/KR100902344B1/en
Application granted granted Critical
Publication of KR100902344B1 publication Critical patent/KR100902344B1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume
    • G01F25/0007Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume for measuring volume flow
    • G01F25/0053Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume for measuring volume flow specially adapted for gas meters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/02Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
    • G01F3/20Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows
    • G01F3/22Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • G01M99/005Testing of complete machines, e.g. washing-machines or mobile phones

Abstract

A clamping device for a gas meter inspection apparatus is provided to prevent the deformation of a gas meter and to improve the measurement precision when inspecting a gas meter. A clamping device for a gas meter inspection apparatus is composed of a pair of insertion pipe units(10) connected to a gas inlet and a gas outlet of a gas meter, an O-ring(20) formed in the each end of the insertion pipe units, and a clamp(30) adhered closely to the inner and outer sides of the gas inlet and the gas outlet. The O-ring is adhered closely to the inside of the gas inlet and the gas outlet. The clamp connects the gas inlet, the gas outlet, and the insertion pipe unit, and is operated by a pneumatic cylinder(31).

Description

Clamping Device for Gas Meter Inspection System {CLAMPING DEVICE FOR GAS METER TESTER}

The present invention relates to a clamping device for mounting and fixing the gas meter to the inspection apparatus in the gas meter inspection apparatus for inspecting the measurement accuracy and leakage of the gas meter, and more specifically, to close the inspection gas meter to the inspection apparatus The present invention relates to a clamping device that prevents the gas meter from being deformed when fixed, thereby preventing the possibility of leakage, so that an accurate precision test and a leak test can be performed on the gas meter.

Gas meters, which measure the amount of gas used, should basically be able to accurately measure the amount of gas that has passed.

Accordingly, when the gas meter is manufactured, it basically checks the measurement accuracy and leakage to determine whether it is suitable.

In the conventional gas meter inspection apparatus, as shown in FIG. 1, the gas meter to be inspected is first seated on the pedestal 110 of the test bench 100, and then the pedestal 110 on which the gas meter is seated is lifted by a pneumatic cylinder. And the gas inlet 210 of the gas meter 200 is in close contact with the gas meter fastening part 120 formed of the gas supply pipe and the gas discharge pipe, respectively, and then the gas is supplied to the gas meter through the gas supply pipe. The measurement precision is being checked.

However, the conventional gas meter inspection apparatus as described above has a structure in which the gas meter is seated on the pedestal 110 and then the gas meter is in close contact with the gas supply pipe and the gas discharge pipe installed thereon by a pneumatic cylinder. In the upper and lower sides of the gas meter is subjected to an excessive force, thereby deforming the plate 220 attached to the front and rear surfaces of the main body of the gas meter, as a result there was a disadvantage that the leakage from the body.

That is, a normal gas meter without leakage at the time of production, rather than the leakage portion is generated during the inspection process, because of this there was a problem that receives a bad decision.

In addition, the conventional inspection device is a structure for maintaining the air tightness by pressing the inlet 210 with the annular sealing 122 attached to the end surface thereof to the flow path connecting portion 121 installed on the upper side as shown in the enlarged view of FIG. In order to maintain airtightness, a stronger compressive force is required, and thus, there is a problem in that the deformation of the gas meter 200 becomes greater.

The present invention is to solve the problems described above, by installing the gas meter firmly to the inspection apparatus without applying excessive force to the upper and lower sides of the gas meter to prevent leakage by mounting the gas meter in the same conditions as the actual use conditions It is an object of the present invention to provide a clamping device that enables inspection.

An object of the present invention as described above is a pair of insertion pipe portion in communication with the gas inlet and gas outlet of the gas meter, the O-ring is installed on the outer peripheral surface of the end of the insertion tube in close contact with the gas inlet, the inside or outside of the gas inlet Is achieved by a clamp which is operated in close contact with the gas inlet to secure the gas inlet.

The clamp is moved up and down the horizontal bar installed at its end by the lifting and lowering operation of the piston rod, the link fixed to it is pulled up or pressed down by the lifting and lowering of the horizontal bar, whereby the operation bar is inserted into It may be rotated around a fixed bar protruding from the outer circumference, and the pressing plate may be fixed while being in close contact with the screw portion of the gas inlet and the gas outlet of the gas meter by the rotation of the operation bar.

In addition, the clamp is a pneumatic cylinder having a piston rod which is raised and lowered, a bracket to which the pneumatic cylinder is attached, respectively, coupled to the piston rod is raised and lowered in accordance with the lifting operation of the piston rod, the hollow portion is formed inside The outer periphery may be implemented by a lifting shaft formed with a locking step, an operating shaft inserted into and fixed to the hollow portion of the lifting shaft and a fixing means provided at the lower end of the operating shaft to be introduced into the gas inlet and the gas outlet.

The present invention is to prevent the deformation of the gas meter when inspecting the gas meter by firmly tightly fixed to the gas inlet and the insertion tube without applying excessive force to the gas meter when fixing the gas meter to the inspection device to inspect the gas meter It is possible to check the leakage of gas meter and the accuracy of measurement under the same conditions of use.

Hereinafter, the specific configurations and embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

The present invention is a pair that is in communication with the gas inlet 210 and gas outlet 210A of the gas meter 200 to prevent the occurrence of deformation during gas meter inspection and to easily attach and detach the gas meter 200 to the inspection device The insertion pipe part 10 of the, and the outer circumferential surface of the end of the insertion pipe part 10 is provided by the O-ring 20 and in close contact with the gas inlet 210 and the gas outlet 210A, the pneumatic cylinder 31 is operated by the gas The inlet 210 and the gas outlet 210A are in close contact with the inside or the outside consists of a clamp 30 for fixing the insertion pipe portion 10 to the gas inlet 210 and the gas outlet 210A.

Insertion tube portion 10 is tightly fixed to the gas inlet 210 and the gas outlet 210A attached to the side of the gas meter 200, respectively, a pair of pipes for supplying and recovering the gas for inspection to the gas meter 200. As a (pipe), a flange is formed at the end of the insertion pipe section 10, and a diameter of a size at which the insertion pipe section 10 can be inserted into the gas inlet 210 and the gas outlet 210A below the flange. Insertion end is formed is formed, the O-ring 20 is installed outside the insertion end. By this structure, the present invention is inserted into the gas inlet 210 and the gas outlet 210A of the end of the insertion tube 10 is installed O-ring 20 is inserted into the surface contact using a flat ring-shaped seal This makes it possible to obtain reliable confidentiality even with a much smaller force than the conventional method of maintaining confidentiality.

Outside or inside the insertion tube portion 10 having the structure described above is operated by a pneumatic cylinder 31 and the clamp 30 for mounting and detaching the insertion tube portion 10 to the gas inlet 210 and the gas outlet 210A is In the present invention, since the clamp 30 has two structures, the present invention will be described in more detail with reference to the embodiments.

<First Embodiment>

The clamp 30 of the first embodiment of the present invention is shown in Figures 3 and 4, as shown in these figures the clamp 30 is located between a pair of parallel insertion tube portions 10 up and down A pneumatic cylinder 31 having a raised piston rod 31A, a pneumatic cylinder 31 to which the pneumatic cylinder 31 is attached, and a through hole through which the insertion pipe part 10 passes, respectively; It is rotatable to the horizontal bar 32 coupled to the piston rod 31A at right angles, a pair of fixed bars 11 protruding from the outer circumference of the insertion pipe part 10, and an operation bar 34 to be described later. And a link 33 which presses or pulls one end of the operation bar 34 to be described later as the horizontal bar 32 moves up and down, and is rotatably connected to the link 33 and the fixing bar 11. At the end of the gas inlet 210 and the gas outlet 210A is pressed plate 35 is fixed to the screw formed on the outer periphery It is composed of a T-shaped operation bar 34 provided.

As shown in FIGS. 6 and 7, the clamp 30 configured as described above is lifted and lowered by the horizontal bar 32 connected to the end thereof by the lifting and lowering operation of the piston rod 31A installed in the pneumatic cylinder 31. By lifting and lowering the horizontal bar 32, the link 33 connected thereto is pulled up or pressed down. In addition, the operation bar 34 attached to the link 33 by the lifting and lowering operation of the link 33 is rotated around the fixed bar 11 protruding on the outer periphery of the insertion tube portion 10, this operation The pressing plate 35 formed at the lower end of the operation bar 34 by the rotation of the bar 34 is firmly fixed while being in close contact with the screw portions of the gas inlet 210 and the gas outlet 210A of the gas meter 200. .

An elastic piece 35A made of rubber or a flexible resin is attached to an inner surface of the pressing plate 35 so that the pressing plate 35 can be more firmly fixed to the threaded portions of the gas inlet 210 and the gas outlet 210A. It is preferable.

Second Embodiment

The clamp 30 of the second embodiment of the present invention is shown in FIG. 8, as shown in this figure, the clamp 30 is positioned above each of the pair of insertion pipe portions 10 and is lifted up and down. A pneumatic cylinder 31 having a piston rod 31A, a bracket 1 to which the pneumatic cylinder 31 is attached, and an end of the piston rod 31A are coupled to each other so that the piston rod 31A can be lifted. Ascending and descending according to the lowering operation, the hollow shaft 39A is formed on the inner side and the lifting shaft 39 having a locking jaw formed on the outer circumference thereof, and an operating shaft inserted into and fixed to the hollow portion 39A of the lifting shaft 39 ( 37) and a fixing means 38 installed at the lower end of the working shaft 37 to be introduced into the gas inlet 210 and the gas outlet 210A.

The fixing means 38 is inserted into the hollow part 39A of the lifting shaft 39 as shown in FIG. 9 as a configuration for binding the insertion pipe part 10 to the gas inlet 210 and the gas outlet 210A. A fixing pin (37A) formed on the front and rear sides of the working shaft (37) to be fixed, and a central portion thereof pivotally coupled to the fixing pin (37A), and two rotating plates (38A) rotated to cross each other in an oblique direction; It consists of the tension spring 38B which attracts and fixes the both ends of the rotating plate 38A with each other.

As shown in FIG. 10, the clamp 30 configured as described above first moves the lifting shaft 39 downward by the piston rod 31A after the gas meter 200 is elevated by a predetermined distance, thereby operating shaft connected thereto. The upper end of the rotating plate 38A of the fixing means 38 mounted at the lower end of the 37 is pressed, whereby the rotating plate 38A is rotated about the fixing pin 37A so that the lower ends of the rotating plate 38A are opposed to each other. The lower end of the insertion tube 10 is attached to and fixed to the inner surfaces of the gas inlet 210 and the gas outlet 210A.

That is, when the upper end of the rotary plate 38A is opened to both sides, the lower end of the rotary plate 38A is also opened in the same manner as the shear blades assembled to cross.

In addition, it is preferable to install a friction plate 38A 'on the outer side of the lower end of the rotating plate 38A so that the clamp 30 is tightly attached to the inner walls of the gas inlet 210 and the gas outlet 210A.

When the insertion pipe part 10 is separated from the gas meter 200, when the lifting shaft 39 is lifted, the force for pressing the rotating plate 38A is removed, thereby making close contact with the inner wall of the gas inlet 210 and the gas outlet 210A. The lower end of the rotating plate 38A is retracted by the tension spring 38B and separated from the inner walls of the gas inlet 210 and the gas outlet 210A.

Meanwhile, the insertion pipe part 10 used in the second embodiment of the present invention is formed on the outer circumferential surface of the lifting shaft 39 while being installed on the outer circumferential surface of the lifting shaft 39 unlike the insertion pipe part 10 used in the first embodiment. The locking jaw is fixed by the locking jaw, and the gas supply nozzle 2 through which the gas is supplied is formed through the side surface thereof. In addition, the O-ring groove 21 is formed at the end of the insertion pipe portion 10 as described above, and the O-ring 20 is installed inside the O-ring groove 21, respectively.

As apparent from the first and second embodiments of the present invention, the present invention does not compress and insert the insertion tube portion 10 into the gas inlet 210 and the gas outlet 210A of the gas meter 200. Is fixed to the gas inlet 210 and the gas outlet 210A by a clamping device so as to prevent deformation of the gas meter 200 so that accurate measurement accuracy and leakage inspection can be performed.

1 is a front view showing a conventional gas meter inspection apparatus.

2 is a state diagram of use of a clamp for a conventional gas meter inspection apparatus.

3 is a perspective view showing an embodiment of a clamping device according to a first embodiment of the present invention.

4 is an exploded perspective view of the clamping device according to the first embodiment of the present invention.

5 is a cross-sectional view of the clamping device according to the first embodiment of the present invention.

6 and 7 are use state diagrams showing an operating state of the clamping device of the first embodiment of the present invention.

8 is an exploded perspective view of a clamping device according to a second embodiment of the present invention.

9 is a cross-sectional view of the clamping device according to the second embodiment of the present invention.

10 and 11 are use state diagrams showing an operating state of the clamping device of the second embodiment of the present invention.

[Explanation of symbols on the main parts of the drawings]

1: bracket 2: feeding nozzle

10: insertion pipe part 11: fixed bar

20: O-ring 30: Clamp 31: Pneumatic cylinder 31A: Piston rod 32: Horizontal bar 33: Link
34: operating bar 35: pressing plate
35 A: Elastic piece 37: working shaft
37A: fixing pin 38: fixing means
38A: Swivel Plate 38A ': Friction Plate
38B: Tension Spring 39: Lift Shaft
39A: hollow part 100: test bench
110: pedestal 120: gas meter fastening portion
121: flow path connection 122: sealing
200: gas meter 210: gas inlet
210A: gas outlet 220: plate

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T, T ': Stepped P: Push pin

Claims (6)

  1. In the gas meter inspection apparatus used to check the leakage of gas meter and measurement accuracy,
    A pair of insertion pipe portions 10 communicating with the gas inlet 210 and the gas outlet 210A of the gas meter 200;
    An o-ring 20 provided at each end of the insertion pipe part 10 to be in close contact with inner surfaces of the gas inlet 210 and the gas outlet 210A;
    The gas inlet 210 and the gas outlet 210A and the inlet pipe portion 10 to be fixed to each other in close contact with the inside or the outside of the gas inlet 210 and the gas outlet 210A by a pneumatic cylinder 31 Clamping device for a gas meter inspection device, characterized in that consisting of a clamp 30 is activated.
  2. The method according to claim 1,
    The clamp 30,
    A pneumatic cylinder 31 having a piston rod 31A; A horizontal bar 32 coupled to the piston rod 31A at a right angle; A pair of fixing bars 11 protruding from the outer circumference of the insertion tube part 10; A link 33 rotatably connected to the horizontal bar 32 and the operation bar 34 and pressing or pulling one end of the operation bar 34 according to the lifting and lowering of the horizontal bar 32; It is rotatably connected to the link 33 and the fixing bar 11, the lower end is provided with a crimp plate 35 which is crimped and fixed to the screw formed on the outer periphery of the gas inlet 210 and the gas outlet 210A Clamping device for a gas meter inspection device, characterized in that consisting of the operating bar (34).
  3. The method according to claim 2,
    The pressing plate 35 is a clamping device for a gas meter inspection device, characterized in that the elastic piece (35A) made of rubber or flexible resin is further attached.
  4. The method according to claim 1,
    The clamp 30,
    A pneumatic cylinder 31 having a piston rod 31A that is lifted up and down; A lifting shaft 39 coupled to the piston rod 31A to move up and down according to the lifting operation of the piston rod 31A, and a hollow portion 39A formed therein; An operating shaft 37 inserted into and fixed to the hollow portion 39A of the lifting shaft 39; Clamping apparatus for a gas meter inspection device, characterized in that provided in the lower end of the operating shaft (37), the gas inlet 210 and the fixing means (38) drawn into the gas outlet 210A.
  5. The method according to claim 4,
    The fixing means 38 is a fixed pin (37A) formed on the front and rear sides of the working shaft 37 is fixed to the hollow portion (39A) of the lifting shaft (39), and the center of the fixing pin (37A) pivot A clamping device for a gas meter inspection device, characterized in that consisting of two rotating plates (38A) are rotated to cross each other in an oblique direction.
  6. The method according to claim 5,
    Clamping device for a gas meter inspection apparatus, characterized in that the friction plate (38A ') is further attached to the outside of the lower end of the rotary plate (38A).
KR1020080082291A 2008-08-22 2008-08-22 Clamping device for gas meter tester KR100902344B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080082291A KR100902344B1 (en) 2008-08-22 2008-08-22 Clamping device for gas meter tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080082291A KR100902344B1 (en) 2008-08-22 2008-08-22 Clamping device for gas meter tester

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KR100902344B1 true KR100902344B1 (en) 2009-06-12

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101374342B1 (en) 2013-11-04 2014-03-17 김병은 Leak test apparatus of canister for vehicle
KR101525415B1 (en) * 2015-01-14 2015-06-17 한양철강(주) leak testing apparatus
CN105258860A (en) * 2015-11-21 2016-01-20 重庆市山城燃气设备有限公司 Gas meter sealing performance detection apparatus with duplex quick clamping device
CN105258852A (en) * 2015-11-21 2016-01-20 重庆市山城燃气设备有限公司 Pneumatic clamping structure for gas meter sealing performance detection
CN105424283A (en) * 2015-11-21 2016-03-23 重庆市山城燃气设备有限公司 Double-linked rapid clamping apparatus for detection of sealing performance of gas meter
CN105466642A (en) * 2015-11-21 2016-04-06 重庆市山城燃气设备有限公司 Gasometern sealing performance detection device having dual-linked air clamper
CN106092458A (en) * 2016-05-31 2016-11-09 浙江美星热交换科技股份有限公司 Charge air cooler air chamber mouth leakage detection apparatus
KR101808305B1 (en) * 2016-09-02 2018-01-18 지엠시글로벌 주식회사 Apparatus for calibrating a gas meter
KR101837604B1 (en) 2018-01-03 2018-03-12 이태근 Device for detecting leakage of gas meter
KR101863254B1 (en) * 2017-05-30 2018-06-01 (주)삼화미터텍 Apparatus for detecting leakage of gas meter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002310767A (en) 2001-04-17 2002-10-23 Asahi Seiki Kk Replacement method for gas meter and measuring device for pressure in pipe and gas concentration

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002310767A (en) 2001-04-17 2002-10-23 Asahi Seiki Kk Replacement method for gas meter and measuring device for pressure in pipe and gas concentration

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101374342B1 (en) 2013-11-04 2014-03-17 김병은 Leak test apparatus of canister for vehicle
KR101525415B1 (en) * 2015-01-14 2015-06-17 한양철강(주) leak testing apparatus
CN105258860A (en) * 2015-11-21 2016-01-20 重庆市山城燃气设备有限公司 Gas meter sealing performance detection apparatus with duplex quick clamping device
CN105258852A (en) * 2015-11-21 2016-01-20 重庆市山城燃气设备有限公司 Pneumatic clamping structure for gas meter sealing performance detection
CN105424283A (en) * 2015-11-21 2016-03-23 重庆市山城燃气设备有限公司 Double-linked rapid clamping apparatus for detection of sealing performance of gas meter
CN105466642A (en) * 2015-11-21 2016-04-06 重庆市山城燃气设备有限公司 Gasometern sealing performance detection device having dual-linked air clamper
CN106092458A (en) * 2016-05-31 2016-11-09 浙江美星热交换科技股份有限公司 Charge air cooler air chamber mouth leakage detection apparatus
CN106092458B (en) * 2016-05-31 2020-02-21 佛山市南海蕾特汽车配件有限公司 Intercooler air chamber mouth leak hunting device
KR101808305B1 (en) * 2016-09-02 2018-01-18 지엠시글로벌 주식회사 Apparatus for calibrating a gas meter
KR101863254B1 (en) * 2017-05-30 2018-06-01 (주)삼화미터텍 Apparatus for detecting leakage of gas meter
KR101837604B1 (en) 2018-01-03 2018-03-12 이태근 Device for detecting leakage of gas meter

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