KR100966099B1 - Measuring instrument for gas meter - Google Patents

Abstract

According to the present invention, the measuring pipe is connected to the fixed pipe and the moving pipe, and according to the size of the gas meter, the moving pipe of the measuring pipe may be stretched or shortened to measure gas meters of various standards. It is a gas meter measuring device whose structure is improved to quickly connect the gas meter to the measuring pipe using

Gas meter measuring device. Measurement piping. Measuring piping. Portable piping. Fixed piping.

Description

Measuring instrument for gas meter

The present invention relates to a gas meter measuring apparatus for solving the shortcomings of the gas meter performance testing apparatus and for processing the storage and analysis of the test result data more accurately and quickly.

In general, a manual inspection device was used for the gas meter performance test. This is a form in which the inspector recognizes each value displayed on the indicator visually at the time of the inspection, and then computes the values according to an expression to obtain a result value. Since the pipe connected to the gas meter is a rubber hose, the rubber hose expands according to the gas pressure, gas pressure, and gas temperature during gas injection, and thus the accuracy of the statistical results is complicated. It brought a lot of errors. There have been many studies to solve this problem.

For example, in Korean Patent Laid-Open Publication No. 10-1999-0009935, a flow meter (2) and a reference meter (3) are positioned on a test bench (1), and a manometer (4), a counter (5), and The thermometer 12 is positioned and the inspection meter 10 to be inspected is placed on the bench 1 and inside the bench 1 a computer 6, a blower 7, a printer 8 and a battery 9 are located. The battery 9 supplies the necessary power to various devices stably through the inverter 11 and can be charged when the vehicle moves, and the blower 7 suctions the air in the piping of the mechanism part. The flow meter (2) constantly controls the test flow rate and accurately supplies the standard flow rate for each class according to KS industry standard, and the reference meter (3) corrects the error value to the inspection meter and transmits the flow rate by generating pulses. The manometer (4) is the reference meter (3) and the inspection meter (10) The pressure is represented by the liquid column, and the counter (5) receives the flow rate of the reference meter (3) as a pulse, measures the inspection meter, and the thermometer (12) measures the flow temperature of the reference meter (3) and the temperature of the inspection meter (10). The performance tester of the mobile gas meter is described in which the computer 6 runs the built-in test data program in a windowing environment and the printer 8 automatically outputs the test results.

Publication No. 10-2000-0001136 discloses a compressor 10 for supplying air at a constant pressure; A cooling and dryer control unit 20 connected to the compressor and configured to control the air supplied from the compressor to be applied to the reference meter unit 40 while maintaining the conditions of constant temperature and constant humidity; A main body pipe part 50 connected to the reference meter part 40 and including a pipe 52 for supplying air supplied from the reference meter part 40 to each gas meter 60; A camera 70 installed by a jig to be rotatable in the vicinity of the gas meter 60 mounted in series with the pipe 52 of the main body pipe 50; A flow control valve 90 for controlling the amount of air flowing through the pipe 52; PLC which is connected to the reference meter unit 40 and the main body piping unit 50 and displays the temperature value and the pressure value of air flowing through the reference meter unit 40 and the main body piping unit 50 on the display unit 84. It can be seen that an automatic gas meter performance inspection apparatus is described, which is connected to the unit 80 and the PLC unit 80, and which consists of a PC 82 in which an image recognition algorithm, a PSI control program and a data management program are embedded. .

The present invention is to solve the above problems, and to develop a performance test device that can perform accurate and reliable performance test and train maintenance test, the elasticity of the standardized test device for gas meter of various specifications (size) Inspected by connecting the inlet and outlet with a rubber hose,

Since the pipe connected to the gas meter is a rubber hose, the rubber hose expands according to the gas pressure, gas pressure, and gas temperature during gas injection, which brings a lot of errors to the accuracy of the test results. The present invention is to improve the gas meter measuring device to reduce the error of the gas flow rate due to the gas pressure and gas temperature difference due to the gas injection during the inspection by connecting the gas meter of various sizes to the pipe of a certain metal material It is a task to do.

The present invention provides a gas meter measuring apparatus that is improved in the structure so that it can be compressed and expanded to adjust the length of the pipe in accordance with the size of the meter when installed in the pipe of the inspection device to inspect the performance of the gas meter in order to inspect the gas meter It is to solve the problem to be achieved by the present invention.

According to the present invention, the gas meter of various sizes (sizes) is used in a standardized inspection device without using a rubber hose having elasticity. Minimize the action such as expansion of the rubber hose according to the temperature of the gas to reduce many errors in the accuracy of the inspection results, or use the gas meter fixing device to quickly and accurately connect the gas meter to the measuring pipe to measure the gas gauge of various specifications. It has the advantage of checking correctly.

According to the present invention, the measuring pipe is connected to the fixed pipe and the moving pipe, and according to the size of the gas meter, the moving pipe of the measuring pipe may be stretched or shortened to measure gas meters of various standards. It is a gas meter measuring device whose structure is improved to quickly connect the gas meter to the measuring pipe using

The inspection method is the same as the existing method, but the control method and the connection method of the connecting pipe are different when the gas meter is installed.

In general, when the gas meter inspection starts, the flow control valve is controlled by the PLC control program, and the blower is operated, and the air of constant temperature and humidity adjusted to the set flow rate flows through the reference meter into the pipe of the mechanism part. This air passes through the instrument pipe connected in series and the gas meter to be inspected. At this time, when a certain value is reached in comparison with the flow rate of the fluid set before the inspection, the air flow rate, temperature, pressure, After measuring the passing amount, temperature and pressure in the gas meter to be inspected, these values are computed by computer to obtain the test result value. The number displayed on the instrument panel is automatically recognized by the CCD camera The flow rate of the reference meter, the temperature and the pressure value are measured using a sensor.

In the full test, the above process is repeated from the minimum flow rate to the maximum flow rate.In the maximum flow rate test, the fluid with the maximum flow rate determined for each grade of the gas meter is supplied into the pipe. Measure the pressure loss in the meter to check the performance of the gas meter.When checking the internal pressure, keep the set pressure in the pipe constant.

Pressure loss in each gas meter was measured to check the gas tightness of the gas meter. However, since the connecting pipe of the gas meter in the inspection uses the rubber hose, the rubber hose is momentarily expanded during the injection of the measuring gas, which affects the pressure, gas volume, and gas temperature of the gas, resulting in an error in the gas metering.

Therefore, in the present invention, the connection part is made of metal when measuring the gas meter, and the hose connecting device is improved to be adjusted according to the size of the gas meter.

Gas meter train test (individual, full test), maximum flow rate test and internal pressure test can be tested according to KS standard (KSB 5327 diaphragm type gas meter).

At the maximum flow rate test, a fluid having a maximum flow rate determined for each class of gas meter is supplied into the pipe, and the pressure loss of each gas meter is measured to measure the performance of the gas meter.

In the internal pressure test, the set pressure in the pipe is kept constant, and the pressure loss in each gas meter is measured to check the gas tightness of the gas meter.

Conventionally, gas meters of various sizes (sizes) have been inspected by connecting the inlet and outlet with elastic rubber hoses to standardized inspection devices, but since the pipes connected to the gas meter are rubber hoses, the gas is momentarily expanded and The rubber hose expands according to the gas pressure and gas temperature, which brings a lot of errors to the accuracy of the test results, and is a measuring pipe equipped with a moving tube and a fixed tube to measure gas meters of various sizes. It is a gas meter measuring device that reduces the error of the gas flow rate due to the gas pressure and gas temperature difference due to the gas injection during the inspection by connecting the gas meter by moving the copper pipe along the moving control unit installed at the bottom.

Another example of the present invention is that when the gas meter A-1 is large, the movement of the moving tube is difficult by hand, so that the measuring pipe is expanded and shortened by mounting a moving control driver for driving the moving tube, regardless of the size of the gas meter. It is an improved device to measure gas meters of various sizes quickly.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Gas meter measuring apparatus of the present invention is to measure the small gas meter (A) as shown in Figure 1 to Figure 6,

Cover 1, wheels and fixtures 2 provided below the cover 1, the intermediate plate 3 provided inside the cover 1, and the gas provided in the upper and lower parts of the intermediate plate 3 Meter fixing device (C), an upper plate (4) spaced at regular intervals above the intermediate plate (3), a measuring pipe (B) provided at the upper and lower portions of the upper plate (4), and the upper plate (4) And gas injection pipes 5 and 5` installed vertically at both ends of the intermediate plate 3,

3 and 5, the measurement pipe (B) is provided with a lower middle one side penetrating through the upper plate (4), the upper portion of the upper plate (4) fixed tube 100 and the fixed tube ( It is installed to extend to the upper side of the upper portion 100 and a fixed connecting pipe 103 is provided with a plurality of rings 108 at the end, and a mobile connecting pipe connecting the fixed connecting pipe 103 in an interpolated form ( The moving tube 110 is installed to extend outside the upper one side, and the moving tube 110 wrapped around the moving tube 110 in the middle lower portion of the moving tube 110, four frame is formed in a rectangular shape, and

Pressure valves and gauges 105 and 115 installed at the upper part of the fixed tube 100 and the moving tube 110, and a lower portion of the fixed tube 100 and the moving tube 110 are installed through the upper plate 4 and are gas meter A. Is composed of gas meter connection parts (109, 119) is connected,

The mobile connection pipe 112 is shown in Figures 3 to 5, the pressure valve and gauges 105 and 115 installed on the upper side, and the fixed connection tube 103 to the upper one side in an interpolated form, and to the outside Is installed extended,

The lower middle one side is provided with a moving tube groove 117 in the center where the movement adjusting rail stand 210 of the movement adjusting unit 200 is guided. Installed through and consists of gas meter connection parts (109, 119) connected to the gas meter (A),

The movement control unit 200 as shown in Figures 5 and 6, the two movement control rails 210, and two movement control vertical poles 220 installed between the two movement control rails (210) Is composed,

A plurality of stop balls are provided on the inside of the movement adjusting rack 210, and the stop balls are provided with a ball 201, a spring 202 installed at the rear of the ball 201, and the front of the ball 201. It can be seen that it is installed in the stopper 203 to prevent the ball 201 from moving forward.

Looking at another example of the gas meter measuring apparatus of the present invention, as a measuring device for measuring a large gas meter, as shown in Figures 7 to 12,

The cover 1-1, the wheel and the fixed base 2-1 provided below the cover 1-1, the intermediate plate 3-1 provided inside the cover 1-1, Gas meter fixing device (C-1) provided in the upper and lower portions of the intermediate plate (3-1), the upper plate (4-1) provided at regular intervals apart on the upper portion of the intermediate plate (3-1), and the upper plate (4) Measurement pipe (B-1) provided in the upper and lower parts of the -1), and the gas injection pipe (5-1) installed perpendicular to one end of the upper plate (4-1) and the intermediate plate (3-1) It is

9 and 11, the measurement pipe B-1 is provided with one lower middle side penetrating through the upper plate 4-1, and a fixing tube 100 at the upper portion of the upper plate 4-1. -1) and a fixed connecting tube 103-1 which is installed to extend outside the upper side of the fixed tube 100-1 and is provided with a plurality of rings 108-1 at the end thereof, and the fixed connecting tube Moving tube (110-1) for connecting the 103-1 in an interpolated form extending to the outside of the upper one of the moving tube (110-1) is installed, and the moving tube 110-1 in the middle lower portion of the moving tube (110-1) -1) is wrapped around, the four frame is a movement control unit 200-1 consisting of a rectangular shape, and the pressure valve and gauge (105-1, 115) installed on the fixed pipe (100-1) and the moving pipe (110-1) -1, and the gas meter connecting portion (109-1, 119) installed through the upper plate (4-1) and connected to the gas meter (A-1) at the lower portion of the fixed tube (100-1) and the moving tube (110-1) -1),

As shown in FIGS. 9 to 11, the movable connecting pipe 112-1 includes pressure valves and gauges 105-1 and 115-1 installed at an upper portion thereof, and a fixed connecting tube 103-1 at an upper side thereof. Connected in the form of, and is extended to the outside,

The lower middle one side is provided with a moving pipe groove 117-1 in the center of the movement adjusting rail stand 210-1 of the moving control unit 200-1 and installed two front pipe guide grooves 114-1 before and after The lower part is installed through the upper plate (4-1) and is composed of gas meter connection parts (109-1, 119-1) to which the gas meter (A-1) is connected,

As shown in Figure 10 to 12, the movement control unit 200-1, two movement control between the two movement control rail (210-1) and the two movement control rail (210-1) installed Consists of a vertical pole 220-1, and a movement control drive,

A plurality of stop balls are provided on the inner side of the movement adjusting rack 210-1, and the stop balls are provided with a spring 202- 1 installed at the rear of the ball 201-1 and the ball 201-1, A stopper 203-1 installed on the front surface of the ball 201-1 to prevent the ball 201-1 from moving forward,

The movement control drive unit is installed on one side of the moving tube (110-1) to move the moving tube (110-1), the front portion is configured to surround one side of the moving tube (110-1) and the rear portion of the hollow tube in the shape of a roll A push rod 700 installed on the outside, a pinion gear connecting rod 530 installed to penetrate the inside of the push rod 700, and are installed at both ends of the push rod 700, and a central portion thereof is connected by a pinion gear connecting rod 530. A handle 550 installed at an extended end of two pinion gears 500 and a pinion gear connector 530 extending outwardly of the front pinion gear 500 of the two pinion gears 500; It can be seen that the rack is installed on the bottom of the two pinion gear 500, the rack gear 600 is installed on the outside of the two movement control rack (210-1), respectively.

Referring to the operating state of the present invention,

When the gas meter A is small, the gas meter A is installed through the upper plate 4 quickly and accurately by using the gas meter fixing device C provided on the upper and lower portions of the intermediate plate 3 in the cover 1. Fixed to the gas meter connecting portion (109, 119) installed in the lower portion of the measuring pipe (B),

According to the size of the gas pipe (A), the measuring pipe (B), the moving pipe 110 is wrapped around the moving pipe 110 in the lower middle of the moving pipe 110, the four frame is a moving control unit consisting of a rectangular shape ( To expand and contract along 200),

Accordingly, the upper portion of the measuring pipe (B) is installed to extend to the outside on the upper side of the fixed tube 100, the mobile connecting tube interpolating the fixed connecting tube 103 is provided with a plurality of rings 108 at the end ( At the same time by expanding and contracting the moving tube 110 is provided with 112,

After attaching the gas meter (A), the gas is injected through the gas injection pipes 5, 5` installed perpendicularly to both ends of the upper plate 4 and the intermediate plate 3,

It is measured through the pressure valve and the gauges 105 and 115 installed on the fixing pipe 100 and the moving pipe 110, and checks the failure of the gas meter (A) by the reverse operation.

The above operation may be performed at the same time or inspected one by one.

Looking at the movement of the movement pipe 110 in the above, the movement pipe groove 117 of the two movement pipe guide groove 114 of the movement pipe 110 interpolating the two movement control rail 210 is the inner side of the movement control rail 210 Is fixed by a plurality of balls 201, when moving in accordance with the size of the gas meter (A) by holding the moving tube 110 by hand and forcibly moved to the appropriate position, the moving tube groove 117 of the moving tube 110 The ball control unit 201 of the movement control rack 210 of the movement control unit 200 is detached and moved to a desired position and is positioned in the movement pipe groove 117 to complete the movement.

In another example of the present invention, when the gas meter A-1 is large, since the movement of the moving tube 110-1 is difficult by hand, a device for driving the moving tube 110-1 is mounted and used and operated. The method is the same as the small gas meter (A), but only the method of extending and shortening the measuring pipe will be described in detail since the moving method of the moving pipe is different.

Looking at the movement of the moving tube 110-1, the moving tube groove 117-1 of the two moving tube guide grooves 114-1 of the moving tube 110-1 interpolating the two moving control rails 210-1 The inside of the movement control rack (210-1) is fixed by a plurality of balls (201-1),

When moving according to the size of a large gas meter (A-1), two pinion gear (500) and pinion gear connecting rods installed on the top of the rack gear 600, respectively installed on the outside of the two moving control rack (210-1) Turning the handle 550 connected by 530,

When the pinion gear 500 advances along the teeth 601 installed on the upper portion of the rack gear 600, the front part doublely installed on the outer side of the pinion gear connecting portion 530 surrounds one side of the moving tube 110-1. The rear portion is moved along the front of the push rod 700 formed in a roll shape and at the same time to move the moving tube (110-1) to the front, and moving a certain interval, the measuring pipe moving tube 110 of the small gas meter (A) In the same way as)).

  1 is a general view of the gas meter measuring apparatus of the present invention

  Figure 2 is a side view of the gas meter measuring apparatus of the present invention

  Figure 3 detailed view of the measurement pipe (B) of the present invention

  4 is a state diagram of the measurement pipe (B) and gas meter (A) of the present invention

  5 is a detailed view of the movement control unit of the present invention

  6 is a detailed view of the movement control rack according to the present invention

  7 to 12 is another example of the gas meter measuring apparatus of the present invention

       <Description of the symbols in the drawing>

       Cover (1,1-1), wheels and fixtures (2,2-1), intermediate plates (3,3-1), top plates (4,4-1), gas injection pipes (5,5`, 5- 1), fixed pipe (100,100-1), moving pipe (110,110-1), pressure valve and gauge (105,115,105-1,115-1), mobile connection pipe (112,112-1), fixed connection pipe (103,103-1), ring (108,108) -1), moving pipe guide grooves 114, 114-1, moving pipe grooves 117, 117-1, gas meter connection parts (109, 119, 109-1, 119-1), movement control unit (200, 200-1), ball (201, 201-1), spring ( 202, 202-1), stopper (203, 203-1), mobile control racks (210, 210-1), mobile control racks (220, 220-1), pinion gear (500), pinion gear connector (530), handle (550), rack gear (600), tooth (601), rod (700), gas meter (A, A-1), measuring pipe (B, B-1), gas meter fixing device (C, C-1).

Claims (4)

In the gas meter measuring device, Cover 1, wheels and fixtures 2 provided below the cover 1, the intermediate plate 3 provided inside the cover 1, and the gas provided in the upper and lower parts of the intermediate plate 3 Meter fixing device (C), an upper plate (4) spaced at regular intervals above the intermediate plate (3), a measuring pipe (B) provided at the upper and lower portions of the upper plate (4), and the upper plate (4) And gas injection pipes 5 and 5` installed vertically at both ends of the intermediate plate 3, The measurement pipe (B) is installed in the lower middle one side through the upper plate 4, the upper portion of the fixing plate 100 and the upper side of the fixing tube 100 is installed to extend outside And a fixed connection tube 103 having a plurality of rings 108 at an end portion thereof, and a movable connection tube 112 connecting the fixed connection tube 103 in an interpolated form to extend outward from one upper portion thereof. (110) and the moving tube 110 wraps around the moving tube 110 in the middle of the moving tube 110, the four frame is formed in a rectangular shape,   Pressure valves and gauges 105 and 115 installed at the upper part of the fixed tube 100 and the moving tube 110, and a lower portion of the fixed tube 100 and the moving tube 110 are installed through the upper plate 4 and are gas meter A. Gas meter measurement apparatus characterized in that it comprises a gas meter connection portion (109,119) is connected. delete In the gas meter measuring device, The cover 1-1, the wheel and the fixed base 2-1 provided below the cover 1-1, the intermediate plate 3-1 provided inside the cover 1-1, Gas meter fixing device (C-1) provided in the upper and lower portions of the intermediate plate (3-1), the upper plate (4-1) provided at regular intervals apart on the upper portion of the intermediate plate (3-1), and the upper plate (4) Measurement pipe (B-1) provided in the upper and lower parts of the -1), and the gas injection pipe (5-1) installed perpendicular to one end of the upper plate (4-1) and the intermediate plate (3-1) It is The measuring pipe (B-1) is provided with one lower middle penetrating through the upper plate (4-1), the upper portion of the upper plate (4-1) fixed tube 100-1 and the fixed tube (100-1) It is installed to extend to the outside of the upper one side of the fixed connecting pipe (103-1) having a plurality of rings (108-1) at the end and the fixed connecting pipe (103-1) connected in the form of interpolation The mobile connection pipe 112-1 which extends to the outside of the upper one side and the moving tube 110-1 is installed, and the middle of the moving tube 110-1 wraps the moving tube 110-1, four frames are rectangular A movement control unit 200-1 composed of a phase, pressure valves and gauges 105-1 and 115-1 installed on the fixed pipe 100-1 and the moving pipe 110-1, and the fixed pipe 100-1. ) And the lower portion of the moving tube 110-1, installed through the upper plate 4-1, and configured by gas meter connection parts 109-1 and 119-1 to which the gas meter A-1 is connected. The movement control unit 200-1 includes two movement control vertical poles 220-1 and a movement control driving unit installed between two movement control rails 210-1 and the two movement control rails 210-1. Is composed, A plurality of stop balls are provided on the inner side of the movement adjusting rack 210-1, and the stop balls are provided with a spring 202- 1 installed at the rear of the ball 201-1 and the ball 201-1, Gas meter measuring device is characterized in that it comprises a stopper (203-1) is installed on the front of the ball (201-1) to prevent the ball (201-1) is advanced to the outside. The method according to claim 3, The movement control drive unit is installed on one side of the moving tube (110-1) to move the moving tube (110-1), the front portion is configured to surround one side of the moving tube (110-1) and the rear portion is provided in a roll shape on the outside Two push pins 700, a pinion gear connector 530 installed through the inside of the push rod 700, and are installed at both ends of the push rod 700, the center portion is connected by the pinion gear connecting rod 530 Two pinion gears 500, a handle 550 installed at an extended end of the pinion gear connector 530 extending outwardly of the front pinion gear 500 of the two pinion gears 500, and the two Gas meter measuring apparatus is installed on the bottom of the pinion gear 500, comprising a rack gear 600, respectively installed on the outside of the two moving control rack (210-1).

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