Detection part of water meter verification equipment

Abstract

The utility model discloses a detection part of water meter verification equipment, which comprises a detection table, a plurality of clamping pipes in a row are in sliding fit with the detection table along the length direction through a sliding rail and a sliding seat, a clamping driving cylinder is arranged at one end of the detection table, every two adjacent clamping pipes clamp one water meter, and the clamping pipes on two sides are in butt joint with the water meter in the middle through flange plates; an inner support is arranged on the inner side of the detection table, two parallel swing arms are hinged to two stand columns of the inner support respectively, the two swing arms are hinged to the two ends of a rectangular frame through two vertical hinge shafts, the rectangular frame is in sliding fit with a plurality of mobile phone trays in the length direction, and an observation window is hollowed out in each mobile phone tray. The detection part can make an upper space for clamping and assembling the water meter quickly and conveniently, and the length direction and the width direction of each sensor can be adjusted.

Description

Technical Field

[0001] The utility model relates to the field of water meter detection and verification, in particular to a detection part of water meter verification equipment. Background Art

[0002] Before a water meter leaves the factory, it needs to be verified using calibration equipment to verify that its measurement is accurate. The water meter calibration equipment in the prior art is roughly divided into a water pressure input part, a detection part and a return water part; the water pressure input part includes a main water tank, a pump, a pressure-stabilizing tank, etc., and its function is to pump water from the main water tank to the detection part to provide water pressure and water volume; the detection part includes a detection platform that fixes a row of multiple water meters in series and a suspension beam located above the detection platform, and the suspension beam is fixed with a photoelectric sensor corresponding to each water meter. Water flows through the water meters in series, and the reading generated at each water meter is the water volume measurement value. The photoelectric sensor reads the water volume measurement value of the corresponding water meter and reports it to the main controller such as a PLC chip; the return water part includes a front return water pipe, a scale, a weighing box and a rear return water pipe. After the water is discharged from the water meter of the detection part, it is discharged to the weighing box through the front return water pipe. The weight is weighed by the scale and reported to the main controller, and the weight is converted into the actual water volume value, and then the indication error is calculated based on the actual water volume value and the water volume measurement value to complete the calibration; thereafter, the water in the weighing box returns to the main water tank through the rear return water pipe.

[0003] The present application relates to a detection unit. The detection platform of the prior art detection unit is equipped with a row of multiple clamping tubes along the length direction, that is, the detection platform is provided with a length-direction slide rail, each clamping tube is fixed with a slide seat, and the slide seat is slidably matched on the slide rail; a flange is provided at the end of each clamping tube, and every two adjacent clamping tubes clamp a water meter and the clamping tubes on both sides are connected to the water meter through the flange, so that a row of multiple water meters are connected in series on the detection platform. A horizontal clamping drive cylinder is provided at one end of the detection platform, and the drive cylinder pushes the clamping tube horizontally so that each clamping tube clamps the corresponding water meter. The suspension beam on which the photoelectric sensor is installed is suspended and fixed above the detection platform by the lifting drive cylinder. Its function is that when the water meter is clamped and assembled, the suspension beam rises to free up the upper space to avoid interference and touch during assembly; after the water meter is firmly clamped, the suspension beam is lowered to make each sensor close to the water meter so as to collect the water meter reading.

[0004] The prior art detection unit has the following defects.

[0005] First, the photoelectric sensor is fixed on the suspension beam and its position cannot be adjusted. However, water meters of different models and sizes will definitely have different final length positions on the test bench after being clamped firmly. In terms of width, although the dials of most water meters are centered, some models have eccentric dials. Therefore, the photoelectric sensor, which cannot be adjusted in both length and width, cannot always be located directly above the water meter to be tested, which will affect the detection accuracy.

[0006] Moreover, although the existing suspension beam can be raised and lowered above the water meter to make room for operation, it requires an additional set of lifting drive cylinders, which leads to a complex structure, increased costs, and a slow lifting speed. Workers have to wait for a while each time until the suspension beam rises into place before they can clamp and assemble the water meter, which is inconvenient to operate.

[0007] Moreover, the photoelectric sensor itself has its shortcomings. The sensor measures by collecting the number of pulses of the plum blossom needle on the meter head. Each time the rotating plum blossom needle passes through a complete scale, a pulse is generated, but if it does not pass through a complete scale, it cannot be recognized. In other words, the number of pulses measured can only be an integer and cannot be accurate to a decimal, so the measurement accuracy is low. Moreover, if bubbles, impurities, etc. in the water pass through the scale, pulses may also be generated, so the measurement results are easily disturbed. Furthermore, the sensor reading cannot be reproduced. Even if the measurement is inaccurate due to interference from bubbles, impurities, etc., workers cannot trace it back. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a detection part of water meter calibration equipment which can free up upper space for quick and convenient clamping and assembly of water meters and can adjust the length and width of each sensor.

[0009] The technical solution of the utility model is to provide a detection part of a water meter calibration equipment, which includes a detection platform, which is slidably matched with a row of multiple clamping tubes along the length direction through a slide rail and a slide seat, a clamping drive cylinder is provided at one end of the detection platform, every two adjacent clamping tubes clamp a water meter, and the clamping tubes on both sides are connected to the central water meter through a flange; an inner bracket is provided on the inner side of the detection platform, and two columns of the inner bracket are respectively hinged with two parallel swing arms, and the two swing arms are hinged with two ends of a rectangular frame through two vertical hinge shafts, and the rectangular frame is slidably matched with multiple mobile phone trays along the length direction, and each mobile phone tray is hollowed out with an observation window.

[0010] Compared with the prior art, the detection unit using the above structure has the following advantages.

[0011] When it is necessary to clamp the series water meters or remove the tested water meters from the test bench, push the rectangular frame inward to retract the rectangular frame and the swing arm, and the area above the water meters can be quickly vacated within five seconds. After clamping and assembling, pull the rectangular frame back to expand the rectangular frame and the swing arm, and the mobile phone tray and the sensor can be re-positioned above the water meters to be tested within five seconds. The push-pull operation of the telescopic connecting rod swing arm structure is significantly faster and more convenient than the existing structure. The operation is smooth and continuous without waiting, and the lifting drive cylinder is omitted, further reducing the construction cost and operating cost.

[0012] Moreover, the structure can quickly, conveniently and accurately adjust the width position of each sensor by pushing the rectangular frame horizontally, while the sliding mobile phone tray can quickly, conveniently and accurately adjust the length position of each sensor, ensuring that each sensor can be located directly above the corresponding water meter to meet the detection needs of water meters of various sizes and models.

[0013] Due to the presence of the mobile phone tray, workers can easily put their smart phones in the tray and place the mobile phone camera in the observation window, using the smart phone as a new sensor to replace the photoelectric sensor to measure the reading of the corresponding water meter; in this way, the mobile phone can not only measure the number of pulses of the plum blossom needle like the photoelectric sensor, but also take photos of the start and end time points, and compare the swing angle change amplitude of the plum blossom needle at the start and end times, and then further subdivide and identify the pulse at the decimal level, such as being able to measure 6.3 pulses, thereby further improving the measurement accuracy; moreover, the mobile phone can identify and eliminate the interference of bubbles and impurities on the pulse; furthermore, the mobile phone will take photos of the start and end nodes, which is reproducible. In case the measurement reading is inaccurate, people can go back based on the start and end photos, and manually compare and judge the accuracy of the measurement results. Therefore, as a new sensor, the mobile phone has higher measurement accuracy, less interference, and reproducibility than the existing photoelectric sensors, and the effect is obviously better.

[0014] Preferably, the two long beams of the rectangular frame are respectively provided with two length-wise slide grooves, and each mobile phone tray has four column pins running through the four corners. The four column pins are divided into two rows and slide in the two slide grooves; two convex ribs are provided on both sides of each mobile phone tray to prevent the mobile phone from falling; the structure is simple to assemble and the cost is not high, but the effect is ideal, which can ensure that the tray slides smoothly and steadily along the length direction, thereby ensuring that the length adjustment of each sensor is precise and smooth.

[0015] The connection structure between the clamping tube and the sliding seat is preferably that a lower semicircular support seat is provided on the top of each sliding seat, and the lower semicircular support seat is buckled with an upper semicircular buckle plate to form a full-circular bayonet, one side of the upper semicircular buckle plate is hinged to one side of the lower semicircular support seat, and the first pin sleeve on the other side of the upper semicircular buckle plate and the second pin sleeve on the other side of the lower semicircular support seat are locked via a pin shaft; each clamping tube is provided with a radially outwardly protruding leveling convex ring, and the outer diameter of the leveling convex ring is equal to the inner diameter of the full-circular bayonet; the upper semicircular buckle plate is penetrated by a threaded hole, and a fastening bolt for tightening the leveling convex ring is screwed into the threaded hole. In this way, the structure is quick and easy to assemble. It only needs to insert the leveling convex ring of the clamping tube into the lower semicircular bracket of the corresponding sliding seat and buckle the upper semicircular buckle plate, then lock the pin shaft, and finally tighten the fastening bolts. Moreover, the structure is accurately aligned after assembly, and the axes of all the clamping tubes are located on the same straight line, thereby ensuring that the clamping drive cylinder accurately pushes each clamping tube to clamp each water meter firmly. Furthermore, although the calibers of various water meters are different, the diameters of the corresponding clamping tubes are also different, but the outer diameters of the leveling convex rings of different clamping tubes are the same, which expands the versatility of the connection structure and ensures that water meters of various calibers can be accurately and firmly clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of the detection part of the water meter calibration equipment.

[0017] Figure 2 The utility model is a schematic diagram of the structure of the inner bracket of the detection part of the water meter calibration equipment.

[0018] Figure 3 The utility model is a schematic diagram of the structure of a slide seat of a detection part of a water meter calibration device.

[0019] As shown in the figure, 1. test table, 2. slide rail, 3. slide seat, 4. clamping tube, 4.1. flange, 5. lower semicircular bracket, 6. upper semicircular buckle plate, 7. first pin sleeve, 8. second pin sleeve, 9. pin shaft, 10. leveling cam, 11. fastening bolt, 12. clamping drive cylinder, 13. water meter, 14. swing arm, 15. inner bracket, 15.1. column, 16. hinge shaft, 17. rectangular frame, 18. mobile phone tray, 19. observation window, 20. slide groove, 21. column pin, 22. convex rib. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 3As shown, the detection part of the water meter calibration equipment of the utility model includes a detection platform 1, and the detection platform 1 is slidably matched with a row of multiple clamping tubes 4 along the length direction through a slide rail 2 and a slide seat 3. Specifically, the detection platform 1 is provided with a slide rail 2 in the length direction, and the multiple clamping tubes 4 correspond to the multiple slide seats 3 one by one, each clamping tube 4 is fixed to the corresponding slide seat 3, and the slide seat 3 is slidably matched on the slide rail 2.

[0022] The connection structure between the root clamping tube 4 and the corresponding slide seat 3 is preferably that each slide seat 3 is provided with a lower semicircular support seat 5 on the top, and the lower semicircular support seat 5 is buckled with an upper semicircular buckle plate 6 to form a full-circular bayonet, and one side of the upper semicircular buckle plate 6 is hinged to one side of the lower semicircular support seat 5; a first pin sleeve 7 is provided on the other side of the upper semicircular buckle plate 6, and a second pin sleeve 8 is provided on the other side of the lower semicircular support seat 5, and the first pin sleeve 7 of the upper semicircular buckle plate 6 and the second pin sleeve 8 of the lower semicircular support seat 5 are locked through a pin shaft 9; each clamping tube 4 is provided with a radially outwardly convex leveling convex ring 10, and the outer diameter of the leveling convex ring 10 is equal to the inner diameter of the full-circular bayonet; the leveling convex ring 10 of the clamping tube 4 is sleeved in the full-circular bayonet of the corresponding slide seat 3, and the upper semicircular buckle plate 6 of the full-circular bayonet is penetrated by a threaded hole, and a fastening bolt 11 for tightening the leveling convex ring 10 that is clamped is screwed into the threaded hole.

[0023] A clamping drive cylinder 12 is provided at one end of the test bench 1. Under the driving action of the clamping drive cylinder 12, every two adjacent clamping tubes 4 clamp a water meter 13. A flange 4.1 is provided at the end of each clamping tube 4. The two clamping tubes 4 on both sides are connected to the water meter 13 in the middle through the flange 4.1; thus, a row of multiple water meters 13 connected in series is formed on the test bench 1.

[0024] An inner bracket 15 is provided inside the test bench 1, and two columns 15.1 of the inner bracket 15 are respectively hinged with two parallel horizontal swing arms 14. The two swing arms 14 are hinged to the two ends of a rectangular frame 17 through two vertical hinge shafts 16, and the rectangular frame 17 is also horizontal. The rectangular frame 17 is slidably matched with a plurality of mobile phone trays 18 along the length direction, and each mobile phone tray 18 is hollowed out with an observation window 19. Specifically, the two long beams of the rectangular frame 17 are respectively provided with two length-direction slide grooves 20, and each mobile phone tray 18 has four column pins 21 running through the four corners, and the four pins are divided into two rows and slidably matched in the two length-direction slide grooves 20; two convex ribs 22 are provided on both sides of each mobile phone tray 18 to prevent the mobile phone from falling. Workers can easily put the smart phone in the tray and place the mobile phone camera in the observation window 19, and use the smart phone as a new sensor to measure the water volume measurement value of the corresponding water meter 13.

Claims

1. A detection part of a water meter calibration equipment, which includes a detection platform, the detection platform is slidably matched with a row of multiple clamping tubes along the length through a slide rail and a slide seat, a clamping drive cylinder is provided at one end of the detection platform, every two adjacent clamping tubes clamp a water meter, and the clamping tubes on both sides are connected to the central water meter through a flange; the characteristics are: An inner bracket is provided on the inner side of the testing table. Two columns of the inner bracket are respectively hinged with two parallel swing arms. The two swing arms are hinged to the two ends of a rectangular frame through two vertical hinge shafts. A plurality of mobile phone trays are slidably matched along the length of the rectangular frame, and an observation window is hollowed out on each mobile phone tray.

2. The detection unit of the water meter calibration equipment according to claim 1, characterized in that: The two long beams of the rectangular frame are respectively provided with two lengthwise slide grooves. Four column pins are passed through the four corners of each mobile phone tray. The four pins are divided into two rows and slide in the two slide grooves. Two convex ribs are provided on both sides of each mobile phone tray to prevent the mobile phone from falling.

3. The detection unit of the water meter calibration equipment according to claim 1, characterized in that: A lower semicircular support is provided on the top of each sliding seat, and the lower semicircular support is buckled with an upper semicircular buckle plate to form a full-circular bayonet. One side of the upper semicircular buckle plate is hinged to one side of the lower semicircular support, and the first pin sleeve on the other side of the upper semicircular buckle plate and the second pin sleeve on the other side of the lower semicircular support are locked through a pin shaft; each clamping tube is provided with a radially outwardly protruding leveling convex ring, and the outer diameter of the leveling convex ring is equal to the inner diameter of the full-circular bayonet; the upper semicircular buckle plate is penetrated by a threaded hole, and a fastening bolt for tightening the leveling convex ring is screwed into the threaded hole.

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