CN209927244U

CN209927244U - Quick calibration equipment of flowmeter

Info

Publication number: CN209927244U
Application number: CN201920764519.5U
Authority: CN
Inventors: 吕剑; 李中
Original assignee: Nanjing Metron Measurement And Control Instrument Co Ltd
Current assignee: Nanjing Metron Measurement And Control Instrument Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-01-10
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a rapid calibration device of a flowmeter, which is applied in the field of flowmeter detection equipment and solves the technical problem that the flowmeter cannot be rapidly tested, the key point of the technical proposal is that the device comprises a water tank, an annular circulating pipe connected with the water tank, and a water pump connected with the circulating pipe, the circulating pipe comprises a water outlet pipe, a detection pipe, a connecting pipe, a standard pipe and a water outlet pipe in sequence, the standard pipe is provided with a standard flowmeter, the detection tubes and the standard tubes are provided with a plurality of different tube diameters, the detection tubes correspond to the standard tubes in diameter one to one, a rotating shaft is horizontally arranged at the upper end of the water tank along the length direction of the water tank, two parallel rotating disc racks are fixedly arranged on the rotating shaft along the vertical direction, the detection tubes are inserted on the rotary table along the axial direction of the rotary shaft, and valves are arranged on the detection tubes; the method has the technical effect of intuitively and quickly testing the qualification of the flowmeter.

Description

Quick calibration equipment of flowmeter

Technical Field

The utility model relates to a flowmeter check out test set field, more specifically says that it relates to a quick calibration equipment of flowmeter.

Background

Electromagnetic flowmeters are new types of flowmeters that have rapidly developed with the development of electronics. The electromagnetic flowmeter measures the flow of conducting fluid based on the electromotive force induced when the conducting fluid passes through external magnetic field by means of electromagnetic induction principle.

At present, a Chinese patent with publication number CN208536992U discloses an electromagnetic flowmeter verification system, which comprises a water storage tank, a water replenishing pool, a weighing instrument, a water outlet pipe, a to-be-detected instrument, a switch valve and a measuring pipeline group; the water storage tank is connected with the water outlet pipe, the water storage tank is connected with the water replenishing pool through a plurality of measuring pipeline sets, and a weighing instrument is arranged at the bottom of the water storage tank.

The system for calibrating the electromagnetic flowmeter measures the volume flowing through the electromagnetic flowmeter in unit time, obtains the actual flow through manual calculation, and compares the readings of the measured meter so as to calibrate whether the readings of the measured meter are accurate. However, the comparison method needs manual conversion, data cannot be obtained intuitively, and the detection mode is to obtain an average value in a period of time, so that the indication change of the measured flowmeter cannot be seen in real time, and therefore a new flowmeter detection device needs to be designed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a quick calibration equipment of flowmeter, its advantage is, the qualification of inspection flowmeter that can audio-visual quick.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a quick verifying attachment of flowmeter, includes the water tank, connects annular circulating pipe on the water tank, connects the water pump on the circulating pipe, the circulating pipe includes outlet pipe, test tube, connecting pipe, standard pipe in proper order, the outlet pipe, be equipped with the flowmeter of standard on the standard pipe, the test tube with the standard pipe has a plurality ofly and the pipe diameter varies, the test tube with the diameter one-to-one of standard pipe, the upper end of water tank is followed the length direction level of water tank is equipped with the pivot, the fixed carousel frame that is equipped with two parallels along vertical direction in the pivot, the test tube is pegged graft along the axial direction of pivot on the carousel, be equipped with all to be equipped with the valve on the test tube.

Through the technical scheme, when the flowmeter needs to be detected, the flowmeter is firstly assembled on the detection pipe with the corresponding diameter, and then the water pump is started, so that water circulates. And meanwhile, opening a valve on a standard pipe with the diameter equal to that of the detection pipe, wherein the diameters of the detection pipe and the standard pipe are the same, so that the flow rate is the same, arranging a standard flowmeter on the standard pipe, comparing the standard flowmeter with the flowmeter to be measured, and if the readings are the same, indicating that the detected flowmeter is qualified, otherwise, indicating that the flowmeter is unqualified. The operation can visually see the detection result without calculation, thereby accelerating the detection speed.

The utility model discloses further set up to: the rotary plate frame is provided with a connecting hole, the water outlet pipe is connected in the connecting hole in a sliding mode, Contraband-shaped frames are arranged on the periphery of the detection pipe on the rotary plate frame, the middle section of the Contraband-shaped frames rotates connected rollers, and the outer rings of the rollers abut against the outer wall of the detection pipe.

Through the technical scheme, the rotary disc is rotated, so that the detection pipes with different diameters are connected to the water outlet pipe, and the flowmeters with various models can be detected. The middle of the test tube is broken for mounting the flow meter, and therefore the test tube needs to be displaced on the turret frame in the axial direction of the test tube. The gyro wheel is contradicted on the outer wall of test tube, reduces the friction between test tube and the carousel frame, protects the outer wall of test tube.

The utility model discloses further set up to: the middle part of pivot is equipped with decelerator, decelerator includes the brake block, connects the connecting rod at the brake block both ends, the connecting rod is kept away from the one end of brake block is all fixed on the lateral wall of water tank.

Through above-mentioned technical scheme, when rotating the carousel frame, the carousel frame has inertia to density on the carousel frame is inhomogeneous, consequently makes the carousel frame difficult in time to stop, thereby increases the butt joint degree of difficulty of detecting pipe and outlet pipe. The speed reducer enables the rotating tray frame to apply certain force, and then when the force on the rotating tray frame withdraws, the rotating tray frame can stop in time, and meanwhile, the rotating tray frame after rotation is guaranteed not to rotate, and the butt joint of the detection pipe and the water outlet pipe is convenient.

The utility model discloses further set up to: the connecting rod is including fixing respectively on the lateral wall of water tank with two screw rods on the brake block, threaded connection is simultaneously on the screw rod swivel nut, two the screw rod is opposite thread.

Through above-mentioned technical scheme, rotate the swivel nut for the screw rod is flexible in the swivel nut, and then adjusts the coefficient of friction between brake block and the pivot, thereby adjusts out suitable frictional force, prevents that frictional force is too big and undersize.

The utility model discloses further set up to: all the two ends of the detection pipe, the water outlet pipe and one end of the connecting pipe close to the detection pipe are provided with flanges, and a connecting rubber pad is arranged between the flanges.

Through above-mentioned technical scheme, the setting of flange is convenient for with the test tube connection on the outlet pipe and on the connecting pipe, the setting of rubber pad improves the leakproofness between flange and the flange.

The utility model discloses further set up to: the flange is provided with a convex ring, the rubber gasket is sleeved on the convex ring, a plurality of rubber columns are uniformly distributed on the rubber gasket along the circumferential direction of the rubber gasket in the axial direction, and the rubber columns are inserted on the flange.

Through above-mentioned technical scheme, the effect of the location that the rubber pad played is played in the setting of bulge loop to prevent mounting flange's in-process, the rubber pad dislocation leads to the leakproofness not good.

The utility model discloses further set up to: the water tank is characterized in that the water outlet pipe is provided with an electromagnetic valve, the upper surface of the water tank is provided with a plurality of sections of channel steel, and the circulating pipe is positioned in the channel steel.

Through above-mentioned technical scheme, the solenoid valve is used for adjusting the flow in the circulating pipe, and then can carry out a lot of measurements to same flowmeter that is detected, and the channel-section steel is used for fixed circulating pipe.

The utility model discloses further set up to: bearing blocks are arranged at two ends of the rotating shaft, and bearings are arranged in the bearing blocks.

Through above-mentioned technical scheme, the setting of bearing is convenient for improve the better rotation of pivot, prevents that the pivot wearing and tearing are serious.

To sum up, the utility model discloses following beneficial effect has:

1. whether the flowmeter of the tested piece is qualified or not can be directly compared, and the detection time is shortened;

2. the setting of solenoid valve can change the flow in the check tube to be convenient for measure many times.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment.

FIG. 2 is a schematic view showing the structure of the circulation tube of the present embodiment.

Fig. 3 is a schematic structural view of the turret frame of the present embodiment.

Fig. 4 is an enlarged view at a in fig. 1.

Fig. 5 is a schematic structural view of the reduction gear of the present embodiment.

FIG. 6 is a schematic view of the structure between the detecting tube and the water outlet tube in this embodiment

Reference numerals: 1. a water tank; 11. a water pump; 12. a cross beam; 13. a connecting plate; 14. channel steel; 2. a circulation pipe; 21. a water outlet pipe; 22. a detection tube; 23. a connecting pipe; 24. a standard pipe; 25. a flange; 26. a rubber pad; 27. a convex ring; 28. a valve; 29. an electromagnetic valve; 3. a rotary plate rack; 31. a bearing seat; 32. a rotating shaft; 33. connecting holes; 34. contraband form rack; 35. a roller; 4. a reduction gear; 41. a brake pad; 42. a connecting rod; 43. a threaded sleeve; 44. a screw; 5. a flow meter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1 and 2, the flowmeter fast checking device comprises a water tank 1, an annular circulating pipe 2 connected to the water tank 1, and a water pump 11 connected to the circulating pipe 2, wherein a plurality of sections of channel steel 14 are welded on the upper surface of the water tank 1, and the circulating pipe 2 is installed in the channel steel 14. The circulating pipe 2 comprises a water outlet pipe 21, a detection pipe 22, a connecting pipe 23, a standard pipe 24, the water outlet pipe 21 and a water pump 11 which are arranged on the water outlet pipe 21 in sequence. The middle of the detection pipe 22 is disconnected for installing the flowmeter 5 to be detected, the detection pipe 22 is provided with the standard flowmeter 5, and the detection pipe 22 and the standard pipe 24 have the same diameter. Firstly, the flowmeter 5 is assembled on the detection pipe 22 with the corresponding diameter, then the water pump 11 is started to circulate water, the number of the flowmeter 5 to be measured is compared with the number of the standard flowmeter 5, if the numbers are the same, the detected flowmeter 5 is qualified, otherwise, the detected flowmeter 5 is unqualified.

Referring to fig. 2 and 3, a cross beam 12 is provided on a water tank 1 in a width direction of the water tank 1, a bearing housing 31 is provided on the cross beam 12, a rotation shaft 32 is provided in the bearing housing 31 in a length direction of the water tank 1, and a bearing is provided in the bearing housing 31, which facilitates rotation of the rotation shaft 32 and reduces friction of the rotation shaft 32. The rotary disc frame 3 is arranged on the rotating shaft 32, the detection pipes 22 are provided with a plurality of different pipe diameters and are all inserted into the rotary disc frame 3, the number and the diameter of the standard pipes 24 are the same as those of the detection pipes 22, the standard flow meters 5 are arranged on each standard pipe 24, and the valves 28 are arranged on the standard pipes 24. When different types of flowmeters 5 need to be checked, the rotary table frame 3 is rotated, the detected flowmeter 5 is installed on the corresponding detection pipe 22, then the detection pipe 22 is connected with the water outlet pipe 21, meanwhile, the valve 28 on the standard pipe 24 with the same diameter as that of the detection pipe 22 is opened, and the water pump 11 is started for checking. An electromagnetic valve 29 is arranged on the water outlet pipe 21, and the electromagnetic valve 29 is used for adjusting the flow in the circulating pipe 2, so that the same detected flowmeter 5 can be measured for multiple times.

Referring to fig. 3 and 4, a plurality of connecting holes 33 are circumferentially formed in the rotary plate frame 3 along the horizontal direction, the detection tube 22 is connected in the connecting holes 33 in a sliding manner, four Contraband-shaped frames 34 are arranged around the connecting holes 33, and a connecting roller 35 is rotatably connected to the middle section of each of the Contraband-shaped frames 34, so that the roller 35 is abutted against the outer wall of the detection tube 22, thereby reducing the abrasion between the detection tube 22 and the hole wall of the connecting hole 33 and protecting the outer wall of the detection tube 22.

Referring to fig. 3 and 5, the speed reducer 4 is disposed at the middle position of the rotating shaft 32, when the rotating disc frame 3 is rotated, the rotating disc frame 3 has inertia, and the density on the rotating disc frame 3 is not uniform, so that the rotating disc frame 3 is difficult to stop in time, and the butt joint difficulty of the detection pipe 22 and the water outlet pipe 21 is increased. The reduction gear 4 is used to improve the stability of the turret frame 3. The speed reducer 4 comprises a brake block 41 and a connecting rod 42 connected to two ends of the brake block 41, a T-shaped connecting plate 13 is arranged on the side wall of the water tank 1 (refer to fig. 1), and one end of the connecting rod 42 is fixed to the vertical end of the T-shaped plate. The connecting rod 42 includes two screws 44 respectively fixed on the connecting plate 13 and the brake pad 41, and a threaded sleeve 43 simultaneously screwed on the screws 44, wherein the two screws 44 are of opposite threads. The screw 43 is rotated to extend and retract the screw 44 in the screw 43, so as to adjust the friction coefficient between the brake pad 41 and the rotating shaft 32, thereby adjusting a proper friction force and preventing the friction force from being too large or too small.

Referring to fig. 2 and 6, the same flanges 25 are provided at both ends of the sensing tube 22 and the connection tube 23 and the outlet tube 21 abutting against the sensing tube 22, and a rubber gasket 26 is provided between the adjacent flanges 25, and the rubber gasket 26 is used to improve the sealing between the flanges 25 and the flanges 25. Be equipped with bulge loop 27 on flange 25 on connecting pipe 23 and outlet pipe 21, rubber pad 26 is located bulge loop 27, and the thickness of rubber pad 26 is greater than bulge loop 27's thickness, and the effect of the location that rubber pad 26 played is prevented to bulge loop 27's setting to prevent mounting flange 25's in-process, rubber pad 26 dislocation from leading to the leakproofness not good.

The action process is as follows: firstly, the water circulation device is arranged on a detection pipe 22 to be detected, then the detection pipe 22 is arranged on a water outlet pipe 21 and a connecting pipe 23, a valve 28 on a standard pipe 24 corresponding to the detection pipe 22 is opened, a water pump 11 is started, water circulation is achieved, and the qualification is checked by comparing the readings of the detected flowmeter 5 and the standard flowmeter 5.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a quick verifying attachment of flowmeter, includes water tank (1), connects annular circulating pipe (2) on water tank (1), connects water pump (11) on circulating pipe (2), its characterized in that, circulating pipe (2) include outlet pipe (21), detection tube (22), connecting pipe (23), standard pipe (24) in proper order, outlet pipe (21), be equipped with standard flowmeter (5) on standard pipe (24), detection tube (22) with standard pipe (24) have a plurality ofly and the pipe diameter is not equal, detection tube (22) with the diameter one-to-one of standard pipe (24), the upper end of water tank (1) is followed the length direction level of water tank (1) is equipped with pivot (32), fixed two parallel revolving tray frame (3) that are equipped with along vertical direction on pivot (32), detection tube (22) are pegged graft along the axial direction of pivot (32) on the carousel, and valves (28) are arranged on the detection pipes (22).

2. The flowmeter rapid verification device according to claim 1, wherein the rotary plate frame (3) is provided with a connecting hole (33), the water outlet pipe (21) is connected in the connecting hole (33) in a sliding manner, Contraband-shaped frames (34) are arranged on the rotary plate frame (3) and positioned around the detection pipe (22), the middle section of the Contraband-shaped frame (34) is rotatably connected with the roller (35), and the outer ring of the roller (35) abuts against the outer wall of the detection pipe (22).

3. The flowmeter rapid verification device according to claim 2, wherein a speed reducer (4) is arranged in the middle of the rotating shaft (32), the speed reducer (4) comprises a brake block (41) and a connecting rod (42) connected to two ends of the brake block (41), and one end of the connecting rod (42) far away from the brake block (41) is fixed on the side wall of the water tank (1).

4. The flowmeter rapid verification device according to claim 3, wherein the connecting rod (42) comprises two threaded rods (44) respectively fixed on the side wall of the water tank (1) and the brake block (41), and a threaded sleeve (43) simultaneously screwed on the threaded rods (44), and the two threaded rods (44) are of opposite threads.

5. The flowmeter rapid verification device according to claim 1, wherein both ends of all the detection pipes (22) and one ends of the water outlet pipe (21) and the connecting pipe (23) close to the detection pipes (22) are provided with flanges (25), and a connecting rubber gasket (26) is arranged between the adjacent flanges (25).

6. The flowmeter rapid calibration device according to claim 5, wherein the flange (25) is provided with a convex ring (27), the rubber pad (26) is sleeved on the convex ring (27), a plurality of rubber columns are uniformly distributed on the rubber pad (26) along the axial direction of the rubber pad (26) in the circumferential direction, and the rubber columns are inserted into the flange (25).

7. The flowmeter rapid calibration device according to claim 1, wherein the water outlet pipe (21) is provided with an electromagnetic valve (29), the upper surface of the water tank (1) is provided with a plurality of sections of channel steel (14), and the circulation pipe (2) is positioned in the channel steel (14).

8. The flowmeter rapid verification device according to claim 7, wherein bearing seats (31) are arranged at two ends of the rotating shaft (32), and bearings are arranged in the bearing seats (31).