Equipment for automatically calibrating glass rotameter by equal-ratio scale reading method

Abstract

The utility model relates to the technical field of glass rotameter detection, in particular to an equal-ratio scale reading method glass rotameter automatic verification device which comprises a base and a support arranged on the upper side of the base, a glass rotameter is arranged on the lower side of the support, the glass rotameter comprises a floater and a glass tube, and the floater is connected with the glass tube. The bottom of the glass tube is fixedly connected with the base, a positioning block is arranged on one side of the support, and a clamping groove matched with the positioning block is formed in the side wall of the support. A sliding rail is arranged on the upper side of the base, an adjusting seat is arranged on the upper side of the sliding rail, an industrial camera is arranged on the upper side of the adjusting seat, and the industrial camera corresponds to the glass rotameter. The adjustable positioning block is arranged to calibrate an upper positioning point and a lower positioning point, the upper positioning point and the lower positioning point serve as reference objects, scaling is conducted according to the proportion, an industrial camera can conveniently and rapidly determine the position of a floater, and the problem that a flowmeter is inaccurate due to the position change of the camera is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass rotor flowmeter detection, in particular to automatic calibration equipment for glass rotor flowmeters using a proportional scale reading method. Background Art

[0002] In order to ensure that all glass tube rotor flowmeters have the same value traceability, they must be calibrated before leaving the factory. The standard flow comparison method is usually used, where a line is manually drawn at the corresponding standard flow position, and this position is then printed on the glass tube as a scale coordinate.

[0003] In the prior art, there is a device that reads the float flow position through an industrial camera, but this device has a fixed requirement for the distance between the camera and the glass tube when reading the float position through an industrial camera. If the camera position changes, the read float position coordinates are inaccurate, resulting in inaccurate flow meter measurement. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an automatic calibration device for a glass rotor flowmeter using a proportional scale reading method.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The automatic calibration equipment of the glass rotor flowmeter using the proportional scale reading method comprises a base and a bracket arranged on the upper side of the base, a glass rotor flowmeter is arranged on the lower side of the bracket, the glass rotor flowmeter comprises a float and a glass tube, the bottom of the glass tube is fixedly connected to the base, a positioning block is arranged on one side of the bracket, and a slot adapted to the positioning block is arranged inside the side wall of the bracket; a slide rail is arranged on the upper side of the base, an adjustment seat is arranged on the upper side of the slide rail, an industrial camera is arranged on the upper side of the adjustment seat, and the industrial camera is arranged corresponding to the glass rotor flowmeter.

[0007] Preferably, the glass tube is arranged vertically, and the glass tube is in a cone shape that is smaller at the bottom and larger at the top.

[0008] Preferably, the float is movably arranged in the glass tube up and down.

[0009] Preferably, a magnetic strip is provided on the inner side of the card slot, and a magnetic block corresponding to the magnetic strip is provided on the positioning block.

[0010] Preferably, positioning blocks are provided at the upper and lower ends of the slot, and positioning points are provided on the positioning blocks.

[0011] Preferably, the adjustment seat is slidably connected to the base via a slide rail.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the prior art, the utility model sets an adjustable positioning block to calibrate the upper and lower positioning points, which are used as reference objects and scaled proportionally, so that the industrial camera can quickly determine the float position and avoid the problem of inaccurate flow meter caused by changes in camera position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the automatic calibration equipment of the glass rotor flowmeter using the proportional scale reading method proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the main sectional structure of the automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method proposed by the utility model.

[0016] In the figure: 1. bracket; 2. positioning block; 3. float; 4. base; 5. slide rail; 6. adjustment seat; 7. industrial camera; 8. glass tube. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] Reference Figure 1-2 , an automatic calibration device for a glass rotor flowmeter using a proportional scale reading method, comprising a base 4 and a bracket 1 arranged on the upper side of the base 4, a glass rotor flowmeter being arranged on the lower side of the bracket 1, the glass rotor flowmeter comprising a float 3 and a glass tube 8, the glass tube 8 being arranged vertically, the glass tube 8 being in a cone shape with a small bottom and a large top, the float 3 being movably arranged in the glass tube 8 up and down, the bottom of the glass tube 8 being fixedly connected to the base 4, a positioning block 2 being arranged on one side of the bracket 1, a slot matching the positioning block 2 being arranged inside the side wall of the bracket 1, a magnetic strip being arranged inside the slot, a magnetic block corresponding to the magnetic strip being arranged on the positioning block 2, positioning blocks 2 being arranged at both the upper and lower ends of the slot, the positioning block 2 being fixed in the slot by the magnetic force between the magnetic block and the magnetic strip, facilitating position adjustment and realizing quick disassembly and assembly, and a positioning point being arranged on the positioning block 2;

[0019] A slide rail 5 is provided on the upper side of the base 4, an adjustment seat 6 is provided on the upper side of the slide rail 5, an industrial camera 7 is provided on the upper side of the adjustment seat 6, the industrial camera 7 is arranged corresponding to the glass rotor flowmeter, the adjustment seat 6 is slidably connected to the base 4 through the slide rail 5, and the adjustment seat 6 slides on the slide rail 5 to realize the position adjustment of the industrial camera 7.

[0020] The main measuring element of the glass rotor flowmeter is a vertically installed tapered glass tube 8 with a small bottom and a large top and a float 3 that can move up and down inside. When the fluid passes through the tapered glass tube 8 from bottom to top, a pressure difference is generated between the top and bottom of the float 3, and the float 3 rises under the action of this differential pressure; when the rising force, the buoyancy and viscous lift of the float 3 are equal to the gravity of the float 3, the float 3 is in a balanced position;

[0021] Therefore, there is a certain proportional relationship between the fluid flow rate flowing through the glass rotor flowmeter and the rising height of the float 3, that is, the flow area of ​​the glass rotor flowmeter. The position height of the float 3 can be used as a flow measurement.

[0022] In this embodiment, two upper and lower positioning points are set on the bracket 1. The positions and distances of the two positioning points are fixed. The position below the glass rotor flowmeter is fixed. The industrial camera 7 reads the position and spacing of the positioning points, and simultaneously reads the position and spacing of the upper and lower edges of the float 3. According to the ratio of the upper and lower edges of the float 3 to the position of the positioning points, the position coordinates of the float 3 are calculated, and the coordinates are used as the coordinates of the printed scale to ensure the accurate position of the float 3.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. An automatic calibration device for a glass rotor flowmeter using a proportional scale reading method, comprising a base (4) and a bracket (1) arranged on the upper side of the base (4), characterized in that: A glass rotor flowmeter is provided on the lower side of the support (1), the glass rotor flowmeter comprising a float (3) and a glass tube (8), the bottom of the glass tube (8) being fixedly connected to the base (4), a positioning block (2) being provided on one side of the support (1), and a slot adapted to the positioning block (2) being provided inside the side wall of the support (1); A slide rail (5) is provided on the upper side of the base (4), an adjustment seat (6) is provided on the upper side of the slide rail (5), an industrial camera (7) is provided on the upper side of the adjustment seat (6), and the industrial camera (7) is arranged corresponding to the glass rotor flowmeter.

2. The automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method according to claim 1 is characterized in that: The glass tube (8) is arranged vertically, and is in the shape of a cone that is smaller at the bottom and larger at the top.

3. The automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method according to claim 1 is characterized in that: The float (3) is movably arranged in the glass tube (8) up and down.

4. The automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method according to claim 1 is characterized in that: A magnetic strip is provided on the inner side of the card slot, and a magnetic block corresponding to the magnetic strip is provided on the positioning block (2).

5. The automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method according to claim 1 is characterized in that: Positioning blocks (2) are provided at the upper and lower ends of the slot, and positioning points are provided on the positioning blocks (2).

6. The automatic calibration equipment for glass rotor flowmeter using the proportional scale reading method according to claim 1 is characterized in that: The adjustment seat (6) is slidably connected to the base (4) via a slide rail (5).

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