CN210570950U

CN210570950U - Liquid flowmeter calibrating installation

Info

Publication number: CN210570950U
Application number: CN201921912507.9U
Authority: CN
Inventors: 庄苏宁; 张乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-05-19
Anticipated expiration: 2029-11-07

Abstract

The utility model relates to a calibrating device, in particular to a calibrating device for a liquid flowmeter; the device comprises an operating platform (1), a flow regulating valve (2), a water tank (3), a clamp meter mechanism (4), a water pipe I (5), a calibration frame I (6), a calibration frame II (7), a calibration disc I (8), a calibration disc II (9) and a water pipe II (10), wherein the clamp meter mechanism (4) comprises a clamp meter seat (41), a cylinder I (42), a cylinder II (43), a corrugated hose (44), an end plate I (45) and an end plate II (46), the end plate I (45) and the end plate II (46) are in sliding fit with the clamp meter seat (41), one end of the corrugated hose (44) is connected with the end plate I (45), and the other end of the corrugated hose (44) is connected with the end plate II (46).

Description

Liquid flowmeter calibrating installation

Technical Field

The utility model relates to a verification equipment specifically is a liquid flowmeter calibrating installation.

Background

The liquid flowmeter is a precise instrument manufactured according to the Karman vortex principle and used for measuring the flow of liquid, gas and steam in a sealed pipeline. The detection element is sealed inside, and no movable part is arranged, so that the field maintenance is not needed, and the liquid flowmeter is widely used for metering management and process control in textile printing and dyeing, petroleum, chemical engineering, metallurgical pharmacy, hot spots and pharmaceutical fire protection industries, so that the calibration of the liquid flowmeter before the liquid flowmeter is put into use is very important. The traditional calibration device generally adopts a sensor and a corresponding auxiliary means to directly measure the flow, and the measurement result is easy to have errors; the flow meter needs to be checked regularly, but the normal use of the equipment is influenced by the mode of dismounting and checking, and the normal use of the equipment is influenced by a long period.

In order to solve the problem, in the current chinese patent CN201821067866.4, an online detection self-calibration device for a liquid flow meter is provided with a stainless steel straight tube, a liquid flow meter is installed inside the stainless steel straight tube, and a throttling device is fixedly butted at the left and right sides of the liquid flow meter;

the throttling device on the right side is fixedly connected with a video signal pipeline in a butt joint mode, a differential pressure gauge is installed above the video signal pipeline, and a data acquisition unit is fixed on the right side of the video signal pipeline through a bolt.

And chinese patent CN201410266379.0, a self-calibration method of a liquid flowmeter online detection device, the liquid flowmeter online detection device calibrated by the liquid flowmeter online detection device self-calibration method includes a standard stainless steel straight pipe section, a portable ultrasonic flowmeter to be measured, and a flow measurement and monitoring component, the liquid flowmeter online detection device self-calibration method includes: step 1, before the on-line detection device of the liquid flowmeter detects the field flow, the flow measurement and monitoring component is verified or calibrated; step 2, starting the liquid flowmeter on-line detection device, and simultaneously reading flow signals of the flow measurement and monitoring component and the portable ultrasonic flowmeter to be detected; and step 3, correcting the portable ultrasonic flowmeter to be measured according to the flow value of the flow measurement and monitoring part.

In fact, the application of the design in actual production is difficult to realize because the use of the liquid flow meter is similar to instrument equipment such as a press machine, and generally when the instrument is calibrated, the calibration operation mainly leaves a factory to determine that the measuring range is error-free, and the instrument is generally not damaged when being used online.

However, in the existing detection of the liquid flowmeter, a video acquisition module is adopted to capture a video of the liquid flowmeter and then compare the captured video with a previously calibrated range pattern, so as to determine an error, but such design involves a software algorithm and a complex operation flow, and often such a device involves a relatively complex operation interface (because of gas circuit control, image capture control and the like), while the existing detection personnel needs to invest a large amount of time for learning and applying for the familiarity and the mastering of such a device, and may cause the outflow of defective products due to errors in the verification operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, providing a liquid flowmeter calibrating installation, come to measure the examination to liquid flowmeter through the principle that similar gun aimed at.

For realizing the above technical purpose, the utility model discloses a technical scheme is: a liquid flowmeter calibrating device comprises an operating platform, a flow regulating valve, a water tank, a clamp meter mechanism, a first water pipe, a first calibration frame, a second calibration frame, a first calibration plate, a second calibration plate and a second water pipe, wherein the clamp meter mechanism comprises a clamp meter seat, a first air cylinder, a second air cylinder, a corrugated hose, a first end plate and a second end plate, the first end plate and the second end plate are in sliding fit with the clamp meter seat, one end of the corrugated hose is connected with the first end plate, the other end of the corrugated hose is connected with the second end plate, cylinder bodies of the first air cylinder and the second air cylinder are arranged on the clamp meter seat and have opposite telescopic directions, the telescopic end of the first air cylinder is connected with the first end plate, the telescopic ends of the second air cylinder are connected with the second end plate, the clamp meter mechanisms are multiple, the corrugated hose of the clamp meter mechanism at the leftmost end is connected with one end of the first water pipe, the other end of the first water pipe is connected, wherein the bellows of the meter clamping mechanism at the rightmost end is connected with one end of a water pipe II, the other end of the water pipe II is communicated with a water tank, the first calibration frame comprises a first calibration frame base, a first connecting rod and a first calibration frame clamping seat, the first calibration frame clamping seat is connected with the first calibration frame base through the first connecting rod, a base of the first calibration frame is in sliding fit with the operating table, the first calibration frame is a plurality of calibration frames which are arranged in a row in front of the meter clamping mechanism, the second calibration frame comprises a second calibration frame base, a second connecting rod and a second calibration frame clamping seat, the second calibration frame clamping seat is connected with the second calibration frame base through the second connecting rod, the bases of the second calibration frames are in sliding fit with the operating table, the second calibration frames are a plurality of and are positioned in front of the first calibration frames in a row, the calibration disc I is connected with the calibration frame I clamping seat, the calibration disc II is connected with the calibration frame II clamping seat, and the calibration disc I and the calibration disc II are provided with positioning scales.

Preferably, the second calibration disc is connected with the second calibration frame clamping seat in a clamping manner, specifically, the second index disc is clamped with the second calibration frame clamping seat.

Preferably, the first calibration disc is connected with the first calibration frame clamping seat, specifically, the first index disc is clamped with the first calibration frame clamping seat.

Preferably, the first calibration disc and the second calibration disc are provided with positioning scales, specifically, the first index disc and the second calibration disc are in a circular shape, and the inner wall of the circular shape is provided with an upright column-shaped positioning scale.

Preferably, the first calibration frame base is in sliding fit with the operating platform, specifically, a first sliding groove is formed in the operating platform, a positioning pin is arranged at the bottom of the first calibration frame base, and the positioning pin is in sliding fit with the first sliding groove.

Preferably, the bottom of the operating platform is further provided with a wave-shaped elastic sheet which abuts against the positioning pin.

Preferably, the first calibration disc and the second calibration disc are provided with positioning scales, specifically, the first index disc and the positioning scales are integrally formed, and the second calibration disc and the positioning scales are also integrally formed.

As can be seen from the above description, the technical effects of the present invention are: the utility model discloses a liquid flowmeter calibrating installation passes through the straight line propagation principle of light, so aim at the back between two calibration plates, aim at with liquid flowmeter's pointer through calibration plate again to realize the examination to liquid flowmeter of mechanical type, such design to current with artifical examination mode, the accuracy is higher also can realize that many liquid flowmeter carry out synchronous detection, and fool type operation is convenient for the upper part of the arm study and operation.

Drawings

Fig. 1 is a schematic structural diagram of the calibrating apparatus for liquid flowmeter of the present invention.

Fig. 2 is a schematic structural diagram of a meter clamping mechanism of the calibrating apparatus for a liquid flowmeter of the present invention.

Fig. 3 is a schematic structural diagram of a first calibration frame of the calibrating apparatus for a liquid flow meter of the present invention.

Fig. 4 is a schematic structural diagram of a calibration frame ii of the calibrating apparatus for liquid flowmeter of the present invention.

Detailed Description

The invention is further described with reference to the following specific drawings and examples.

According to the attached drawings, the calibrating device for the liquid flowmeter comprises an operating platform 1, a flow regulating valve 2, a water tank 3, a meter clamping mechanism 4, a first water pipe 5, a first calibrating frame 6, a second calibrating frame 7, a first calibrating disc 8, a second calibrating disc 9 and a second water pipe 10, wherein the meter clamping mechanism 4 comprises a meter clamping base 41, a first air cylinder 42, a second air cylinder 43, a corrugated hose 44, a first end plate 45 and a second end plate 46, the first end plate 45 and the second end plate 46 are in sliding fit with the meter clamping base 41, one end of the corrugated hose 44 is connected with the first end plate 45, the other end of the corrugated hose 44 is connected with the second end plate 46, the cylinder bodies of the first air cylinder 42 and the second air cylinder 43 are installed on the meter clamping base 41 and are opposite in telescopic directions, the telescopic end of the first air cylinder 42 is connected with the first end plate 45, the telescopic end of the second air cylinder 43 is connected with the second end plate 46, the meter clamping mechanisms 4 are multiple, the hose 44 of the meter clamping mechanism 4 at the leftmost end is connected, the other end of the first water pipe 5 is connected with the water tank 3, the water tank 3 is arranged below the operating platform 1, the corrugated pipe 44 of the clamping meter mechanism 4 at the rightmost end is connected with one end of the second water pipe 10, the other end of the second water pipe 10 is communicated with the water tank 3, the first calibration frame 6 comprises a first calibration frame base 61, a first connecting rod 62 and a first calibration frame clamping base 63, the first calibration frame clamping base 63 is connected with the first calibration frame base 61 through the first connecting rod 62, the first calibration frame base 61 is in sliding fit with the operating platform 1, a plurality of first calibration frames 6 are arranged in a row in front of the clamping meter mechanism 4, the second calibration frame 7 comprises a second calibration frame base 71, a second connecting rod 72 and a second calibration frame clamping base 73, the second calibration frame clamping base 73 is connected with the second calibration frame base 71 through the second connecting rod 72, the second calibration frame base 71 is in sliding fit with the operating platform 1, a plurality of second calibration frames 7 are arranged in a row in front of the first calibration frame 6, the first calibration disc 8 is connected with the first calibration frame clamping seat 63, the second calibration disc 9 is connected with the second calibration frame clamping seat 73, and the first calibration disc 8 and the second calibration disc 9 are provided with positioning scales 11; the second calibration disc 9 is connected with the second calibration frame clamping seat 73, in particular to the second index disc 9 is clamped with the second calibration frame clamping seat 73; the first calibration disc 8 is connected with the first calibration frame clamping seat 63 in a clamping manner, namely the first calibration disc 8 is clamped with the first calibration frame clamping seat 63; the first calibration disc 8 and the second calibration disc 9 are provided with positioning scales 11, specifically, the first index calibration disc 8 and the second index calibration disc 9 are in a circular ring shape, and the inner wall of the circular ring shape is provided with an upright column-shaped positioning scale; the sliding fit between the first calibration frame base 61 and the operating platform 1 specifically means that a first sliding groove 11 is formed in the operating platform 1, a positioning pin 64 is arranged at the bottom of the first calibration frame base 61, and the positioning pin 64 is in sliding fit with the first sliding groove 11; the bottom of the operating platform 1 is also provided with a wave-shaped elastic sheet 12, and the wave-shaped elastic sheet 12 abuts against the positioning pin 64; the first calibration disc 8 and the second calibration disc 9 are provided with positioning scales 13, specifically, the first index disc 8 and the positioning scales 13 are integrally formed, and the second calibration disc 9 and the positioning scales 13 are also integrally formed.

In specific implementation, the liquid flowmeter is placed between the two meter clamping mechanisms 4, the first cylinder 42 and the second cylinder 43 of each meter clamping mechanism 4 extend forwards to drive the first end plate 45 and the second end plate 46 to move towards two sides, the distance between the two adjacent meter clamping mechanisms 4 is reduced, so that the second end plate of the left meter clamping mechanism 4 and the first end plate of the right meter clamping mechanism 4 in the two adjacent meter clamping mechanisms 4 are clamped with a pipeline of the liquid flowmeter, the flow regulating valve is communicated with a corrugated pipe in the adjacent meter clamping mechanism 4, the meter clamping mechanisms 4 and the liquid flowmeter are installed in a sequential analogy manner, the positions of the positioning scales 13 on each calibration disc are the same according to the model of each liquid flowmeter to be detected, and the

calibration discs

8 and 9 can be directly understood as that the structures of the first calibration disc 8 and the second calibration disc 9 are completely the same, at the moment, the water in the water tank 3 is controlled to supply water through the water pump (wherein the water pump is matched with the water tank by default and is not marked in the figure), the flow of the water pipe I5 is regulated through the flow regulating valve 2, after the stable operation is carried out, the first calibration disc 8 is directly inserted on the first calibration frame clamping seat 63, the first calibration frame base 61 is slid on the operation table 1, so that the instrument pointer display on the flow regulating valve 2 can be completely covered by the positioning scale 13 on the first calibration disc 8, the operation is carried out in the same way, the second calibration disc 9 is inserted on the second calibration frame clamping seat 73, and then the second calibration frame 7 is slid on the operation table 1, so that the positioning scale 13 on the first calibration disc 8 is completely covered by the positioning scale 13 on the second calibration disc 9, and whether the pointer on the instrument regulating valve 2 can also be completely covered by the positioning scale 13 on the second calibration disc 9 is judged again, if the instrument pointer on the flow regulating valve 2, the positioning scale 13 on the first calibration disc 8 and the positioning scale 13 on the second calibration disc 9 do not have extensions on other edges, the measuring range of the flow regulating valve 2 is free from errors, and the flow regulating valves 2 of different models can be matched with calibration discs with different sizes and different positions of the positioning scales 13.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Without departing from the spirit of the present invention, it is within the scope of the present invention to design the structure and embodiments similar to the above technical solutions without creativity.

Claims

1. The utility model provides a liquid flowmeter calibrating installation which characterized in that: the device comprises an operating platform (1), a flow regulating valve (2), a water tank (3), a meter clamping mechanism (4), a water pipe I (5), a calibration frame I (6), a calibration frame II (7), a calibration disc I (8), a calibration disc II (9) and a water pipe II (10), wherein the meter clamping mechanism (4) comprises a meter clamping base (41), a cylinder I (42), a cylinder II (43), a corrugated hose (44), an end plate I (45) and an end plate II (46), the end plate I (45) and the end plate II (46) are in sliding fit with the meter clamping base (41), one end of the corrugated hose (44) is connected with the end plate I (45), the other end of the corrugated hose (44) is connected with the end plate II (46), cylinder bodies of the cylinder I (42) and the cylinder II (43) are installed on the meter clamping base (41) and have opposite telescopic directions, and the telescopic end of the cylinder I (42) is connected with the end plate I (45), the telescopic end of the cylinder II (43) is connected with the end plate II (46), the meter clamping mechanisms (4) are multiple, the corrugated hose (44) of the meter clamping mechanism (4) at the leftmost end is connected with one end of the water pipe I (5), the other end of the water pipe I (5) is connected with the water tank (3), the water tank (3) is arranged below the operating platform (1), the corrugated pipe of the meter clamping mechanism at the rightmost end is connected with one end of the water pipe II, the other end of the water pipe II (10) is communicated with the water tank (3), the calibration frame I (6) comprises a calibration frame I base (61), a connecting rod I (62) and a calibration frame I clamping base (63), the calibration frame I clamping base (63) is connected with the calibration frame I base (61) through the connecting rod I (62), the calibration frame I base (61) is in sliding fit with the operating platform (1), and the calibration frame I (6) is multiple and is positioned in front of the meter clamping mechanisms (4), the calibration frame II (7) comprises a calibration frame II base (71), a connecting rod II (72) and a calibration frame II clamping seat (73), the calibration frame II clamping seat (73) is connected with the calibration frame II base (71) through the connecting rod II (72), the calibration frame II base (71) is in sliding fit with the operating platform (1), the calibration frame II (7) is multiple and located in a row in front of the calibration frame I (6), the calibration disc I (8) is connected with the calibration frame I clamping seat (63), the calibration disc II (9) is connected with the calibration frame II clamping seat (73), and the calibration disc I (8) and the calibration disc II (9) are provided with positioning scales (13).

2. The liquid flow meter verification device of claim 1, wherein: the second calibration disc (9) is connected with the second calibration frame clamping seat (73), and particularly, the second index disc (9) is clamped with the second calibration frame clamping seat (73).

3. The liquid flow meter verification device of claim 1, wherein: the first calibration disc (8) is connected with the first calibration frame clamping seat (63) in a clamping manner, specifically, the first calibration disc (8) is clamped with the first calibration frame clamping seat (63).

4. The liquid flow meter verification device of claim 1, wherein: the first calibration disc (8) and the second calibration disc (9) are provided with positioning scales (13), specifically, the first index disc (8) and the second calibration disc (9) are in a circular ring shape, and the inner wall of the circular ring shape is provided with a column-shaped positioning scale.

5. The liquid flow meter verification device of claim 1, wherein: the sliding fit of the first calibration frame base (61) and the operating platform (1) specifically means that the operating platform (1) is provided with a first sliding groove (11), the bottom of the first calibration frame base (61) is provided with a positioning pin (64), and the positioning pin (64) is in sliding fit with the first sliding groove (11).

6. The liquid flow meter verification device of claim 5, wherein: the bottom of the operating platform (1) is further provided with a wave-shaped elastic sheet (12), and the wave-shaped elastic sheet (12) is abutted to the positioning pin (64).

7. The liquid flow meter verification device of claim 5, wherein: the calibration disc I (8) and the calibration disc II (9) are provided with positioning scales (13), specifically, the index calibration disc I (8) and the positioning scales (13) are integrally formed, and the calibration disc II (9) and the positioning scales (13) are also integrally formed.