KR20020072421A - Large Water Meter Performance Test Device - Google Patents

Abstract

PURPOSE: A large water meter performance test device is provided to shorten test time and achieve improved accuracy by permitting a large water meter to be arranged to the test device in a simple and accurate manner. CONSTITUTION: A slidable plate(8) which reciprocates by a hydraulic cylinder(7), and a slide guide member connected to the slidable plate are arranged at an end of a water inlet pipe(2) which is connected to a static pressure tank(1). The slide guide member has an O-ring arranged along the outer periphery of the slide guide member, and the slidable plate has an insertion hole equipped with a rubber packing. A water drain pipe(16) has an end where sensors(17,17') are mounted so as to measure the center of the diameter of the large water meter. Automatic butterfly valves(20,20') are arranged at the intermediate portion of the water drain pipe. A lift(15) having an elevating plate(14), is installed at a large water meter installation unit(12) between the water inlet pipe and the water drain pipe. A mounting board(13) having a groove is fixed on the elevating plate, such that a plurality of large water meters are lifted in a stable manner.

Description

Large Water Meter Performance Test Device {omitted}

The present invention relates to a water meter test apparatus configured to allow the tap water to pass through at a uniform pressure, in order to test whether the amount of tap water is accurately displayed on the water meter. A large water meter performance test device.

Conventionally, a large and heavy large water meter is lifted up according to the center heights of the inlet and drain pipes, and then fixed to the bottom of the water meter with a square block to pressurize it to be connected to the test apparatus. There was a problem such as a large amount of work time.

In addition, in order to fix the large water meter to the test apparatus, a device having a connection groove formed at the end side of the water inlet and drain pipes is formed, and a through hole through which the fluid can move is formed, and the diameter is many times longer than the dimension. The fixture was inserted from both sides to install a large water meter, but this was complicated in configuration and the large water meter had to be tested by attaching it to the test device one by one. There was a problem such as this takes a large amount.

The present invention has been devised to solve the problems described above, the slide guide portion that can be moved back and forth by the hydraulic, pneumatic cylinder on the end side of the inlet pipe (12) for attaching and detaching the large water meter in a large water meter tester ( 9) and the plate (8) is formed, and the upper and lower detection sensors (17, 17 ') are mounted on the end of the drain pipe (16) so that the height of the flange diameter of the large water meter can be measured. In the site where the large water meter is attached or detached between the water pipe and the drain pipe, a reporter is installed, and a mounting table 13 is formed on the upper part of the upper and lower sloping grooves 25 so that a large number of large water meter can be placed there. The objective is to prevent the left and right swings even when placed, and to keep the center of the large water meter and the large water meter accurately during the test to facilitate the test work.

1 is an installation state diagram which is an embodiment of the present invention

2 is a plan view of the detachable part of the present invention

3 is a perspective view of a large water meter installation portion of the present invention

Explanation of symbols on the main parts of the drawings

1: static pressure tank 2: water supply pipe 3: buffer flexible

4: hydraulic protection device 5: butterfly 6: removable part

7,7 ': cylinder 8: seal plate 9: slide guide

10 (rubber) packing 11: O-ring 12: mounting part

13: mounting table 14: lifting plate 15: the report

16: drain pipe 17,17 ': sensor 18: flow control valve

19,19 ': Butterfly Valve 20,20': Automatic Butterfly Valve

21: Large standard tank (more than 10000ℓ) 22: Control box

23,23 ': Fixture 24: Cylinder 25: Slope groove

26: insertion hole 27: lamp 28: electronic flow meter

Inlet pipe (2) connected to the constant pressure tank (1) is equipped with a buffer backlash (2), a hydraulic stopper (4) and a butterfly valve (5), the hydraulic end of the hydraulic cylinder (7) (7) ') To form a sliding plate (8) and the slide guide portion 9 connected thereto by the forward and backward operation, the O-ring (11) is installed on the outer side of the slide guide portion (9), the inside of the water supply pipe (2) On the side, the rubber plate (10) is formed in the stepped portion of the contact plate (26) insertion hole 26,

The water supply pipe (2) is equipped with a detection sensor (17) (17 ') on the upper side and the lower side on the end side of the drain pipe (16) that floats a predetermined space and coincides with the center, and the flow control valve (13) and the butterfly valve (19) (19 ') and automatic butterfly valve (20) (20') and electronic flowmeter (28) etc. are installed, and the other end of the drain pipe (16) is connected to the reference tank (more than 10000l) (21) The control box 22 in which the lamp 27 lights up

In addition, in the space between the water inlet pipe 2 and the drain pipe 16, that is, the large water meter installation unit 12 is provided with a return (15) formed with a lifting plate 14, the upper light down narrow on the lifting plate (14) It is a large water meter performance test device, characterized in that the mounting table 13 formed with the inclined groove 25 is fixed, so that a large number of large water meter can be put on and lifted in the upper and lower narrow slope groove 25.

Reference numerals 23 and 23 'are fixed bases for fixing the inlet pipe 2 and the drain pipe 16, and 24 are hydraulic and pneumatic cylinders for operating the reporter 15.

The operation of the present invention configured as described above is as follows.

If a large number of large water meters of the same diameter through which tap water is passed are placed on the upper and lower sloping grooves 25 of the mounting table 13 fixed to the lifting plate 14, the upper and lower sloping grooves 25 ) Acts as a guide to prevent left and right fluctuations, to make the center of the large water meter and the large water meter exactly match, and to place rubber packing between the large water meter flanges.

In this way, when the large water meter and the large water meter mounted on the ordinary light bottom groove 25 are lifted up to the report 15, the sensing sensors 17 and 17 'installed at the end of the drain pipe 16 are large water meter meters. Detects the height of the upper and lower sides of the through-hole of the flange and transmits it to the control box 22, and at half the upper and lower heights, that is, the center of the water inlet pipe 2 and the drain pipe 16 coincides with the center of the large water meter. When it reaches, the lamp 27 is turned on and the reporter 15 is stopped.

In this state, the flange 7 side of the large water meter instrument in which the plate 8 is tightly mounted by operating the cylinders 7 and 7 'is inserted into the plate 8 insertion hole 26, and the flange cross-section side (rubber) packing (10) ), And the other side of the other large water meter also adheres to the rubber packing, and the large water meter is to be equipped with a large water meter for testing.

At this time, the centers of the plurality of large-scale water meter mounted on the inclined groove 25 of the upper and lower straits of the inlet pipe, the drain pipe, and the upper mounting table 13 of the upper part 13 are in a state of being aligned in a straight line, and the cylinders 7 and 7 ') Pushes the plate 8, the upper and lower sloping groove 25 acts as a guide to both sides of the large water meter, so that it can not swing left and right, and the state is pushed horizontally in the state where the center is aligned Thus, the tap water that is placed between the large water meter (not shown in the drawing) is in close contact with each other, so that the tap water can pass through without being leaked.

After mounting a large number of large-scale water meter, open the butterfly valve (5) installed in the inlet pipe (2), the flow control valve 18 and the butterfly valve (19) (19 ') on the drain pipe (16) side And when the automatic butterfly valves 20 and 20 'are opened, the tap water of the constant pressure tank 1 flows to the reference tank 16 through the drain pipe 16 through a plurality of large-scale water meters for testing through the inlet pipe 2. When it reaches the predetermined height of the reference tank 16, the control box 22 closes the automatic butterfly valve 20 of the convection pipe and then closes the automatic butterfly valve 20 'of the small flow pipe. The flow of water is stopped and the amount of tap water indicated in the reference tank 16 is tested to be accurate even within the tolerance range for the large water meter.

As described above, a large number of large-scale water meter can be attached and detached to the large-scale water meter tester at a time, and the centers of the plurality of large-size water meters placed on the slope of the upper and lower slopes of the report are not shaken and exactly matched. It is a very useful invention that the test work time is shortened, the lifting work is easy, and the effect of precise measurement is possible.

Claims (1)

In a large water meter performance tester, On the end of the water inlet pipe (2) connected to the positive pressure tank (1) is formed a sliding plate (8) and a slide guide (9) connected to it by the hydraulic (pneumatic) cylinder (7) (7 '), O-ring (11) is installed on the outer side of the slide guide (9), and the (rubber) packing (10) is formed on the end of the sealing plate (8) insertion hole (26), An automatic butterfly valve for measuring the diameter center of a large water meter mounted on the upper and lower sides by detecting sensors 17 and 17 'at upper and lower ends thereof, and opening and closing sequentially. 20) (20 '), Between the water inlet pipe 2 and the drain pipe 16, that is, a large water meter installation unit 12 is provided with a report 15 formed with a lifting plate 14, the slope of the upper and lower slopes on the lifting plate 14 A large-scale water meter performance test apparatus configured to fix the mounting table (13) having the (25) formed so as to raise and lower the plurality of large-size water meters without fluctuations left and right.